際際滷shows by User: rbplastics / http://www.slideshare.net/images/logo.gif 際際滷shows by User: rbplastics / Thu, 04 Dec 2014 08:43:10 GMT 際際滷Share feed for 際際滷shows by User: rbplastics Solids conveying consistency /slideshow/solids-conveying-consistency-article-030613/42353554 solidsconveyingconsistencyarticle030613-141204084310-conversion-gate01
The material handling of the feedstock is a very critical part of the extrusion process. If the feedstock is not introduced to the feedsection of screw in a smooth and uniform matter, then the likelihood of a stable and consistent output is unlikely. This is the reason why it is very important that if regrind is added to the virgin feedstock, it must be done very consistently and uniformly. It should also be mentioned here that a very important part of the extrusion equipment is the hopper and feedthroat section. If the hopper and feedthroat sections are not designed properly, inconsistent material flow to the screw can take place. For example, if the conical section of the hopper (see figure) does not have the proper transition, the resin will not flow smoothly into the feedthroat of the extruder.]]>

The material handling of the feedstock is a very critical part of the extrusion process. If the feedstock is not introduced to the feedsection of screw in a smooth and uniform matter, then the likelihood of a stable and consistent output is unlikely. This is the reason why it is very important that if regrind is added to the virgin feedstock, it must be done very consistently and uniformly. It should also be mentioned here that a very important part of the extrusion equipment is the hopper and feedthroat section. If the hopper and feedthroat sections are not designed properly, inconsistent material flow to the screw can take place. For example, if the conical section of the hopper (see figure) does not have the proper transition, the resin will not flow smoothly into the feedthroat of the extruder.]]>
Thu, 04 Dec 2014 08:43:10 GMT /slideshow/solids-conveying-consistency-article-030613/42353554 rbplastics@slideshare.net(rbplastics) Solids conveying consistency rbplastics The material handling of the feedstock is a very critical part of the extrusion process. If the feedstock is not introduced to the feedsection of screw in a smooth and uniform matter, then the likelihood of a stable and consistent output is unlikely. This is the reason why it is very important that if regrind is added to the virgin feedstock, it must be done very consistently and uniformly. It should also be mentioned here that a very important part of the extrusion equipment is the hopper and feedthroat section. If the hopper and feedthroat sections are not designed properly, inconsistent material flow to the screw can take place. For example, if the conical section of the hopper (see figure) does not have the proper transition, the resin will not flow smoothly into the feedthroat of the extruder. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/solidsconveyingconsistencyarticle030613-141204084310-conversion-gate01-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> The material handling of the feedstock is a very critical part of the extrusion process. If the feedstock is not introduced to the feedsection of screw in a smooth and uniform matter, then the likelihood of a stable and consistent output is unlikely. This is the reason why it is very important that if regrind is added to the virgin feedstock, it must be done very consistently and uniformly. It should also be mentioned here that a very important part of the extrusion equipment is the hopper and feedthroat section. If the hopper and feedthroat sections are not designed properly, inconsistent material flow to the screw can take place. For example, if the conical section of the hopper (see figure) does not have the proper transition, the resin will not flow smoothly into the feedthroat of the extruder.
Solids conveying consistency from R&B Plastics Machinery
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Extruder Screw Cooling /slideshow/extruder-screw-cooling/40038403 screwcoolingarticle122712-141008155932-conversion-gate02
There are basically three Coefficients of Friction (Figure 1) that take place in the feed section of the screw, (1) between the barrel and the pellet, (2) between pellet to pellet, and (3) between the root of the screw and the plastic pellet.]]>

There are basically three Coefficients of Friction (Figure 1) that take place in the feed section of the screw, (1) between the barrel and the pellet, (2) between pellet to pellet, and (3) between the root of the screw and the plastic pellet.]]>
Wed, 08 Oct 2014 15:59:32 GMT /slideshow/extruder-screw-cooling/40038403 rbplastics@slideshare.net(rbplastics) Extruder Screw Cooling rbplastics There are basically three Coefficients of Friction (Figure 1) that take place in the feed section of the screw, (1) between the barrel and the pellet, (2) between pellet to pellet, and (3) between the root of the screw and the plastic pellet. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/screwcoolingarticle122712-141008155932-conversion-gate02-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> There are basically three Coefficients of Friction (Figure 1) that take place in the feed section of the screw, (1) between the barrel and the pellet, (2) between pellet to pellet, and (3) between the root of the screw and the plastic pellet.
Extruder Screw Cooling from R&B Plastics Machinery
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Screw and barrel wear /slideshow/screw-and-barrel-wear/38972617 screwandbarrelweararticle012012-140911085756-phpapp02
Screw and barrel wear is critical in all plasticating applications whether it is extrusion, injection molding, and blow molding, plus twin screw extrusion. Excessive screw and barrel wear can cause instable throughput or recovery on reciprocating screws, increased melt temperature and reduced plasticating rates.]]>

Screw and barrel wear is critical in all plasticating applications whether it is extrusion, injection molding, and blow molding, plus twin screw extrusion. Excessive screw and barrel wear can cause instable throughput or recovery on reciprocating screws, increased melt temperature and reduced plasticating rates.]]>
Thu, 11 Sep 2014 08:57:56 GMT /slideshow/screw-and-barrel-wear/38972617 rbplastics@slideshare.net(rbplastics) Screw and barrel wear rbplastics Screw and barrel wear is critical in all plasticating applications whether it is extrusion, injection molding, and blow molding, plus twin screw extrusion. Excessive screw and barrel wear can cause instable throughput or recovery on reciprocating screws, increased melt temperature and reduced plasticating rates. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/screwandbarrelweararticle012012-140911085756-phpapp02-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Screw and barrel wear is critical in all plasticating applications whether it is extrusion, injection molding, and blow molding, plus twin screw extrusion. Excessive screw and barrel wear can cause instable throughput or recovery on reciprocating screws, increased melt temperature and reduced plasticating rates.
Screw and barrel wear from R&B Plastics Machinery
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Regrind particle size /slideshow/regrind-particle-size-article-041812/37988502 regrindparticlesizearticle041812-140814072837-phpapp01
Almost all processes, extrusion, injection and blow molding require that regrind be used in the process. Depending on the process greatly determines the amount of regrind that is generated. Some processes produce very minimal amounts of regrind, such as an injection molding process using a hot runner system versus a flat sheet extrusion process producing thermoformed sheet and the entire skeleton has to be fed back into the process or a blow molding process which always generates large amounts of regrind.]]>

Almost all processes, extrusion, injection and blow molding require that regrind be used in the process. Depending on the process greatly determines the amount of regrind that is generated. Some processes produce very minimal amounts of regrind, such as an injection molding process using a hot runner system versus a flat sheet extrusion process producing thermoformed sheet and the entire skeleton has to be fed back into the process or a blow molding process which always generates large amounts of regrind.]]>
Thu, 14 Aug 2014 07:28:37 GMT /slideshow/regrind-particle-size-article-041812/37988502 rbplastics@slideshare.net(rbplastics) Regrind particle size rbplastics Almost all processes, extrusion, injection and blow molding require that regrind be used in the process. Depending on the process greatly determines the amount of regrind that is generated. Some processes produce very minimal amounts of regrind, such as an injection molding process using a hot runner system versus a flat sheet extrusion process producing thermoformed sheet and the entire skeleton has to be fed back into the process or a blow molding process which always generates large amounts of regrind. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/regrindparticlesizearticle041812-140814072837-phpapp01-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Almost all processes, extrusion, injection and blow molding require that regrind be used in the process. Depending on the process greatly determines the amount of regrind that is generated. Some processes produce very minimal amounts of regrind, such as an injection molding process using a hot runner system versus a flat sheet extrusion process producing thermoformed sheet and the entire skeleton has to be fed back into the process or a blow molding process which always generates large amounts of regrind.
Regrind particle size from R&B Plastics Machinery
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Oversize Screw and Barrel /slideshow/oversize-screw-and-barrel/37068014 oversizescrewandbarrelarticle122712-140716205047-phpapp02
I have written in the past about screw/barrel wear and also screw rebuilding, but there are some screw and barrel shops that offer an alternative for excessive barrel wear and that is honing the barrel oversize and then rebuilding the screw oversize also to fit.]]>

I have written in the past about screw/barrel wear and also screw rebuilding, but there are some screw and barrel shops that offer an alternative for excessive barrel wear and that is honing the barrel oversize and then rebuilding the screw oversize also to fit.]]>
Wed, 16 Jul 2014 20:50:47 GMT /slideshow/oversize-screw-and-barrel/37068014 rbplastics@slideshare.net(rbplastics) Oversize Screw and Barrel rbplastics I have written in the past about screw/barrel wear and also screw rebuilding, but there are some screw and barrel shops that offer an alternative for excessive barrel wear and that is honing the barrel oversize and then rebuilding the screw oversize also to fit. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/oversizescrewandbarrelarticle122712-140716205047-phpapp02-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> I have written in the past about screw/barrel wear and also screw rebuilding, but there are some screw and barrel shops that offer an alternative for excessive barrel wear and that is honing the barrel oversize and then rebuilding the screw oversize also to fit.
Oversize Screw and Barrel from R&B Plastics Machinery
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Over-hung Loads /slideshow/overhung-loads/36065252 overhungloadsarticle020712-140619083953-phpapp02
Recently a processor installed a new screw into their 6 x 32:1 L/D extruder. Within a few weeks the hard facing that had been welded on the flight OD started to pop off. (As shown in the attached photo) The flight failure was in an isolated area, so it was then assumed that the failure was due to a poor weld bond. The screw was ultra-sonically inspected and the remaining flights showed good bore, but the entire screw was rebuilt and returned to the customer.]]>

Recently a processor installed a new screw into their 6 x 32:1 L/D extruder. Within a few weeks the hard facing that had been welded on the flight OD started to pop off. (As shown in the attached photo) The flight failure was in an isolated area, so it was then assumed that the failure was due to a poor weld bond. The screw was ultra-sonically inspected and the remaining flights showed good bore, but the entire screw was rebuilt and returned to the customer.]]>
Thu, 19 Jun 2014 08:39:53 GMT /slideshow/overhung-loads/36065252 rbplastics@slideshare.net(rbplastics) Over-hung Loads rbplastics Recently a processor installed a new screw into their 6 x 32:1 L/D extruder. Within a few weeks the hard facing that had been welded on the flight OD started to pop off. (As shown in the attached photo) The flight failure was in an isolated area, so it was then assumed that the failure was due to a poor weld bond. The screw was ultra-sonically inspected and the remaining flights showed good bore, but the entire screw was rebuilt and returned to the customer. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/overhungloadsarticle020712-140619083953-phpapp02-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Recently a processor installed a new screw into their 6 x 32:1 L/D extruder. Within a few weeks the hard facing that had been welded on the flight OD started to pop off. (As shown in the attached photo) The flight failure was in an isolated area, so it was then assumed that the failure was due to a poor weld bond. The screw was ultra-sonically inspected and the remaining flights showed good bore, but the entire screw was rebuilt and returned to the customer.
Over-hung Loads from R&B Plastics Machinery
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Extruder or Injection Molding Machine Startup and Shutdown Article /slideshow/machine-startup-and-shutdown-article/34998834 machinestartupandshutdownarticle030613-140522074602-phpapp01
Many companies have their own procedure for starting up and shutting down an extruder or injection molding machine and, depending on the process, there may be reasons for the specific method. But from the point of view on the effect of the screw itself, the following procedure will produce the best overall results.]]>

Many companies have their own procedure for starting up and shutting down an extruder or injection molding machine and, depending on the process, there may be reasons for the specific method. But from the point of view on the effect of the screw itself, the following procedure will produce the best overall results.]]>
Thu, 22 May 2014 07:46:02 GMT /slideshow/machine-startup-and-shutdown-article/34998834 rbplastics@slideshare.net(rbplastics) Extruder or Injection Molding Machine Startup and Shutdown Article rbplastics Many companies have their own procedure for starting up and shutting down an extruder or injection molding machine and, depending on the process, there may be reasons for the specific method. But from the point of view on the effect of the screw itself, the following procedure will produce the best overall results. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/machinestartupandshutdownarticle030613-140522074602-phpapp01-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Many companies have their own procedure for starting up and shutting down an extruder or injection molding machine and, depending on the process, there may be reasons for the specific method. But from the point of view on the effect of the screw itself, the following procedure will produce the best overall results.
Extruder or Injection Molding Machine Startup and Shutdown Article from R&B Plastics Machinery
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Instrument Calibration /slideshow/instrument-calibration-article-062713/33900587 instrumentcalibrationarticle062713-140424093828-phpapp01
I was recently asked to visit a facility that was a flat sheet producer to determine the cause of a major screw design problem. So, as always, I have to start at the beginning to gather all of the technical information to determine the root cause. This facility had 5 large extrusion sheet lines and they were issues with all 5 extruders...]]>

I was recently asked to visit a facility that was a flat sheet producer to determine the cause of a major screw design problem. So, as always, I have to start at the beginning to gather all of the technical information to determine the root cause. This facility had 5 large extrusion sheet lines and they were issues with all 5 extruders...]]>
Thu, 24 Apr 2014 09:38:28 GMT /slideshow/instrument-calibration-article-062713/33900587 rbplastics@slideshare.net(rbplastics) Instrument Calibration rbplastics I was recently asked to visit a facility that was a flat sheet producer to determine the cause of a major screw design problem. So, as always, I have to start at the beginning to gather all of the technical information to determine the root cause. This facility had 5 large extrusion sheet lines and they were issues with all 5 extruders... <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/instrumentcalibrationarticle062713-140424093828-phpapp01-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> I was recently asked to visit a facility that was a flat sheet producer to determine the cause of a major screw design problem. So, as always, I have to start at the beginning to gather all of the technical information to determine the root cause. This facility had 5 large extrusion sheet lines and they were issues with all 5 extruders...
Instrument Calibration from R&B Plastics Machinery
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Gross Versus Net /slideshow/gross-versus-net/32921638 grossversusnet122911-140330213238-phpapp02
Several years ago, a customer had ordered a new screw for their thin sheet process. They requested a throughput rate of 1600 lb/hr...]]>

Several years ago, a customer had ordered a new screw for their thin sheet process. They requested a throughput rate of 1600 lb/hr...]]>
Sun, 30 Mar 2014 21:32:38 GMT /slideshow/gross-versus-net/32921638 rbplastics@slideshare.net(rbplastics) Gross Versus Net rbplastics Several years ago, a customer had ordered a new screw for their thin sheet process. They requested a throughput rate of 1600 lb/hr... <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/grossversusnet122911-140330213238-phpapp02-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Several years ago, a customer had ordered a new screw for their thin sheet process. They requested a throughput rate of 1600 lb/hr...
Gross Versus Net from R&B Plastics Machinery
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Buying a used extruder /slideshow/buying-a-used-extruder-article-101212/30621994 buyingausedextruderarticle101212-140130075857-phpapp01
Be careful when buying a used extruder because you might be buying a pig in a poke.]]>

Be careful when buying a used extruder because you might be buying a pig in a poke.]]>
Thu, 30 Jan 2014 07:58:57 GMT /slideshow/buying-a-used-extruder-article-101212/30621994 rbplastics@slideshare.net(rbplastics) Buying a used extruder rbplastics Be careful when buying a used extruder because you might be buying a pig in a poke. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/buyingausedextruderarticle101212-140130075857-phpapp01-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Be careful when buying a used extruder because you might be buying a pig in a poke.
Buying a used extruder from R&B Plastics Machinery
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New and Improved Screw Technology for Processing INGEO PLA /slideshow/womer-new-and-improved-screw-technology-for-pla/29630118 womer-newandimprovedscrewtechnologyforpla-140102070717-phpapp01
Since the early 1990s INGEO resins have made enormous improvements in the process ability of their bio-polymer resins. In the early days, when the resin was first being manufactured at pilot plant levels, extrusion processing of INGEO was very difficult. Today, natural additives are being used to improve the process ability of these resins. Several new lubricant additive packages were tested to determine which package produced the best overall performance and process improvements. The process data was used to quantify the process ability of the various additive packages. The data was then compared to the internal pressure data that was collected to analyze and determine the best overall additive package.]]>

Since the early 1990s INGEO resins have made enormous improvements in the process ability of their bio-polymer resins. In the early days, when the resin was first being manufactured at pilot plant levels, extrusion processing of INGEO was very difficult. Today, natural additives are being used to improve the process ability of these resins. Several new lubricant additive packages were tested to determine which package produced the best overall performance and process improvements. The process data was used to quantify the process ability of the various additive packages. The data was then compared to the internal pressure data that was collected to analyze and determine the best overall additive package.]]>
Thu, 02 Jan 2014 07:07:17 GMT /slideshow/womer-new-and-improved-screw-technology-for-pla/29630118 rbplastics@slideshare.net(rbplastics) New and Improved Screw Technology for Processing INGEO PLA rbplastics Since the early 1990s INGEO resins have made enormous improvements in the process ability of their bio-polymer resins. In the early days, when the resin was first being manufactured at pilot plant levels, extrusion processing of INGEO was very difficult. Today, natural additives are being used to improve the process ability of these resins. Several new lubricant additive packages were tested to determine which package produced the best overall performance and process improvements. The process data was used to quantify the process ability of the various additive packages. The data was then compared to the internal pressure data that was collected to analyze and determine the best overall additive package. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/womer-newandimprovedscrewtechnologyforpla-140102070717-phpapp01-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Since the early 1990s INGEO resins have made enormous improvements in the process ability of their bio-polymer resins. In the early days, when the resin was first being manufactured at pilot plant levels, extrusion processing of INGEO was very difficult. Today, natural additives are being used to improve the process ability of these resins. Several new lubricant additive packages were tested to determine which package produced the best overall performance and process improvements. The process data was used to quantify the process ability of the various additive packages. The data was then compared to the internal pressure data that was collected to analyze and determine the best overall additive package.
New and Improved Screw Technology for Processing INGEO PLA from R&B Plastics Machinery
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Base Lining Your Extruder /slideshow/base-lining-your-extruder/28922627 baseliningyourextruder-131205063146-phpapp02
When a new extruder is installed, or a new screw mounted in an existing machine, do you know what the expected throughput rate is going to be? You should. If you dont baseline your extruder, then how are you going to set realistic expectations for its performance? If extrusion screws are designed properly, they typically will be able to withstand the maximum torque available from the extruder and the resin being processed. The extruder should operate at approximately 90% of its full available torque, based on 100% pellet feedstock, which typically will be the worst-case scenario. By using todays barrier screw technology, higher throughput rates, lower melt temperatures, and better power efficiencies can be obtained. This article will provide some basic insight to help processors to determine if they are obtaining the maximum production rates from their extruders, providing that they have adequate downstream cooling and handling equipment in the extrusion system.]]>

When a new extruder is installed, or a new screw mounted in an existing machine, do you know what the expected throughput rate is going to be? You should. If you dont baseline your extruder, then how are you going to set realistic expectations for its performance? If extrusion screws are designed properly, they typically will be able to withstand the maximum torque available from the extruder and the resin being processed. The extruder should operate at approximately 90% of its full available torque, based on 100% pellet feedstock, which typically will be the worst-case scenario. By using todays barrier screw technology, higher throughput rates, lower melt temperatures, and better power efficiencies can be obtained. This article will provide some basic insight to help processors to determine if they are obtaining the maximum production rates from their extruders, providing that they have adequate downstream cooling and handling equipment in the extrusion system.]]>
Thu, 05 Dec 2013 06:31:46 GMT /slideshow/base-lining-your-extruder/28922627 rbplastics@slideshare.net(rbplastics) Base Lining Your Extruder rbplastics When a new extruder is installed, or a new screw mounted in an existing machine, do you know what the expected throughput rate is going to be? You should. If you dont baseline your extruder, then how are you going to set realistic expectations for its performance? If extrusion screws are designed properly, they typically will be able to withstand the maximum torque available from the extruder and the resin being processed. The extruder should operate at approximately 90% of its full available torque, based on 100% pellet feedstock, which typically will be the worst-case scenario. By using todays barrier screw technology, higher throughput rates, lower melt temperatures, and better power efficiencies can be obtained. This article will provide some basic insight to help processors to determine if they are obtaining the maximum production rates from their extruders, providing that they have adequate downstream cooling and handling equipment in the extrusion system. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/baseliningyourextruder-131205063146-phpapp02-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> When a new extruder is installed, or a new screw mounted in an existing machine, do you know what the expected throughput rate is going to be? You should. If you dont baseline your extruder, then how are you going to set realistic expectations for its performance? If extrusion screws are designed properly, they typically will be able to withstand the maximum torque available from the extruder and the resin being processed. The extruder should operate at approximately 90% of its full available torque, based on 100% pellet feedstock, which typically will be the worst-case scenario. By using todays barrier screw technology, higher throughput rates, lower melt temperatures, and better power efficiencies can be obtained. This article will provide some basic insight to help processors to determine if they are obtaining the maximum production rates from their extruders, providing that they have adequate downstream cooling and handling equipment in the extrusion system.
Base Lining Your Extruder from R&B Plastics Machinery
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Comparison of two different cooling methods for extrusion /slideshow/comparison-of-two-differnent-cooling-methods-for-extrusion/27980464 10-131106163313-phpapp01
This paper will compare the total power consumption of two different means of heating/cooling systems: air and water. For a single 90mm extruder, the total power consumption, output rate, and thermal control will be used to compare the two cooling means. Four different resins will be used.]]>

This paper will compare the total power consumption of two different means of heating/cooling systems: air and water. For a single 90mm extruder, the total power consumption, output rate, and thermal control will be used to compare the two cooling means. Four different resins will be used.]]>
Wed, 06 Nov 2013 16:33:13 GMT /slideshow/comparison-of-two-differnent-cooling-methods-for-extrusion/27980464 rbplastics@slideshare.net(rbplastics) Comparison of two different cooling methods for extrusion rbplastics This paper will compare the total power consumption of two different means of heating/cooling systems: air and water. For a single 90mm extruder, the total power consumption, output rate, and thermal control will be used to compare the two cooling means. Four different resins will be used. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/10-131106163313-phpapp01-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> This paper will compare the total power consumption of two different means of heating/cooling systems: air and water. For a single 90mm extruder, the total power consumption, output rate, and thermal control will be used to compare the two cooling means. Four different resins will be used.
Comparison of two different cooling methods for extrusion from R&B Plastics Machinery
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Screw and Barrel Inspection /slideshow/screw-and-barrel-inspection/26132821 8-130912075935-phpapp01
Screw and barrel inspection plays a very important part in achieving exceptional production performance. The screw and barrel are major components of extrusion, injection molding and blow molding processes, and should be measured for wear at least once a year (preferably twice a year). Many U.S. companies schedule preventive maintenance (PM) during the week of Independence Day and again during the week of Christmas.]]>

Screw and barrel inspection plays a very important part in achieving exceptional production performance. The screw and barrel are major components of extrusion, injection molding and blow molding processes, and should be measured for wear at least once a year (preferably twice a year). Many U.S. companies schedule preventive maintenance (PM) during the week of Independence Day and again during the week of Christmas.]]>
Thu, 12 Sep 2013 07:59:35 GMT /slideshow/screw-and-barrel-inspection/26132821 rbplastics@slideshare.net(rbplastics) Screw and Barrel Inspection rbplastics Screw and barrel inspection plays a very important part in achieving exceptional production performance. The screw and barrel are major components of extrusion, injection molding and blow molding processes, and should be measured for wear at least once a year (preferably twice a year). Many U.S. companies schedule preventive maintenance (PM) during the week of Independence Day and again during the week of Christmas. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/8-130912075935-phpapp01-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Screw and barrel inspection plays a very important part in achieving exceptional production performance. The screw and barrel are major components of extrusion, injection molding and blow molding processes, and should be measured for wear at least once a year (preferably twice a year). Many U.S. companies schedule preventive maintenance (PM) during the week of Independence Day and again during the week of Christmas.
Screw and Barrel Inspection from R&B Plastics Machinery
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Empirical evaluation of different groove feed screw geometries /slideshow/empirical-evaluation-of-different-groove-feed-screw-geometries/25253317 8-130814160153-phpapp01
Plasticization rates can be greatly increased with the use of grooved feed extrusion. Grooved feed extruders can be used in a wide range of extrusion processes for higher output rates. This technology has doubled plasticization rates for some resins and processes as compared to smooth bore extruders. This paper will compare the performance of three different screw geometries while processing fractional melt HDPE. One of the main methods of evaluation will be the comparison of internal pressure profiles over the entire length of the screw at eleven different locations down the length of the barrel at two L/D apart.]]>

Plasticization rates can be greatly increased with the use of grooved feed extrusion. Grooved feed extruders can be used in a wide range of extrusion processes for higher output rates. This technology has doubled plasticization rates for some resins and processes as compared to smooth bore extruders. This paper will compare the performance of three different screw geometries while processing fractional melt HDPE. One of the main methods of evaluation will be the comparison of internal pressure profiles over the entire length of the screw at eleven different locations down the length of the barrel at two L/D apart.]]>
Wed, 14 Aug 2013 16:01:53 GMT /slideshow/empirical-evaluation-of-different-groove-feed-screw-geometries/25253317 rbplastics@slideshare.net(rbplastics) Empirical evaluation of different groove feed screw geometries rbplastics Plasticization rates can be greatly increased with the use of grooved feed extrusion. Grooved feed extruders can be used in a wide range of extrusion processes for higher output rates. This technology has doubled plasticization rates for some resins and processes as compared to smooth bore extruders. This paper will compare the performance of three different screw geometries while processing fractional melt HDPE. One of the main methods of evaluation will be the comparison of internal pressure profiles over the entire length of the screw at eleven different locations down the length of the barrel at two L/D apart. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/8-130814160153-phpapp01-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Plasticization rates can be greatly increased with the use of grooved feed extrusion. Grooved feed extruders can be used in a wide range of extrusion processes for higher output rates. This technology has doubled plasticization rates for some resins and processes as compared to smooth bore extruders. This paper will compare the performance of three different screw geometries while processing fractional melt HDPE. One of the main methods of evaluation will be the comparison of internal pressure profiles over the entire length of the screw at eleven different locations down the length of the barrel at two L/D apart.
Empirical evaluation of different groove feed screw geometries from R&B Plastics Machinery
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The effects of running different barrel temperature profiles for various resins /rbplastics/the-effects-of-running-different-barrel-temperature-profiles-for-various-resins 7-130718074258-phpapp02
Differences in solids conveying, screw pressure profile generation, output, motor energy required, will vary between resins, barrel temperature profiles, and resin preheat temperatures, on a single stage low compression barrier screw design.]]>

Differences in solids conveying, screw pressure profile generation, output, motor energy required, will vary between resins, barrel temperature profiles, and resin preheat temperatures, on a single stage low compression barrier screw design.]]>
Thu, 18 Jul 2013 07:42:58 GMT /rbplastics/the-effects-of-running-different-barrel-temperature-profiles-for-various-resins rbplastics@slideshare.net(rbplastics) The effects of running different barrel temperature profiles for various resins rbplastics Differences in solids conveying, screw pressure profile generation, output, motor energy required, will vary between resins, barrel temperature profiles, and resin preheat temperatures, on a single stage low compression barrier screw design. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/7-130718074258-phpapp02-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Differences in solids conveying, screw pressure profile generation, output, motor energy required, will vary between resins, barrel temperature profiles, and resin preheat temperatures, on a single stage low compression barrier screw design.
The effects of running different barrel temperature profiles for various resins from R&B Plastics Machinery
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An experimental investigation into melt pump performance /slideshow/an-experimental-investigation-into-melt-pump-performance/23243405 7-anexperimentalinvestigationintomeltpumpperformance-130620082827-phpapp02
Melt pump performance and efficiencies will vary according to the viscosity of the resin being pumped, and the discharge pressure that the melt pump will need to overcome. Resin melt temperature differences and power requirements of the pump, will vary according to the resin, and conditions that the pump will operate under. This paper will explore the processing differences in resins on gear pump performance at different pump speeds, at three different discharge pressures. Discharge pressures on the pump will be varied keeping the suction pressure constant, thus increasing the change in pressure across the pump. Melt temperature, and pump efficiency. melt pump motor amperage, and total output, (kg/hr) will then be measured and recorded.]]>

Melt pump performance and efficiencies will vary according to the viscosity of the resin being pumped, and the discharge pressure that the melt pump will need to overcome. Resin melt temperature differences and power requirements of the pump, will vary according to the resin, and conditions that the pump will operate under. This paper will explore the processing differences in resins on gear pump performance at different pump speeds, at three different discharge pressures. Discharge pressures on the pump will be varied keeping the suction pressure constant, thus increasing the change in pressure across the pump. Melt temperature, and pump efficiency. melt pump motor amperage, and total output, (kg/hr) will then be measured and recorded.]]>
Thu, 20 Jun 2013 08:28:27 GMT /slideshow/an-experimental-investigation-into-melt-pump-performance/23243405 rbplastics@slideshare.net(rbplastics) An experimental investigation into melt pump performance rbplastics Melt pump performance and efficiencies will vary according to the viscosity of the resin being pumped, and the discharge pressure that the melt pump will need to overcome. Resin melt temperature differences and power requirements of the pump, will vary according to the resin, and conditions that the pump will operate under. This paper will explore the processing differences in resins on gear pump performance at different pump speeds, at three different discharge pressures. Discharge pressures on the pump will be varied keeping the suction pressure constant, thus increasing the change in pressure across the pump. Melt temperature, and pump efficiency. melt pump motor amperage, and total output, (kg/hr) will then be measured and recorded. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/7-anexperimentalinvestigationintomeltpumpperformance-130620082827-phpapp02-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> Melt pump performance and efficiencies will vary according to the viscosity of the resin being pumped, and the discharge pressure that the melt pump will need to overcome. Resin melt temperature differences and power requirements of the pump, will vary according to the resin, and conditions that the pump will operate under. This paper will explore the processing differences in resins on gear pump performance at different pump speeds, at three different discharge pressures. Discharge pressures on the pump will be varied keeping the suction pressure constant, thus increasing the change in pressure across the pump. Melt temperature, and pump efficiency. melt pump motor amperage, and total output, (kg/hr) will then be measured and recorded.
An experimental investigation into melt pump performance from R&B Plastics Machinery
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General Extruder Audit Information /rbplastics/general-extruder-audit-information 7-extruderaudit-130515133514-phpapp02
From time to time it is necessary to do a complete an audit on the condition of an extruder to make sure that it is operating in top condition for maximum effectiveness and efficiency. The following some general information that should be considered to accomplish a good Extruder Audit.]]>

From time to time it is necessary to do a complete an audit on the condition of an extruder to make sure that it is operating in top condition for maximum effectiveness and efficiency. The following some general information that should be considered to accomplish a good Extruder Audit.]]>
Wed, 15 May 2013 13:35:13 GMT /rbplastics/general-extruder-audit-information rbplastics@slideshare.net(rbplastics) General Extruder Audit Information rbplastics From time to time it is necessary to do a complete an audit on the condition of an extruder to make sure that it is operating in top condition for maximum effectiveness and efficiency. The following some general information that should be considered to accomplish a good Extruder Audit. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/7-extruderaudit-130515133514-phpapp02-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br> From time to time it is necessary to do a complete an audit on the condition of an extruder to make sure that it is operating in top condition for maximum effectiveness and efficiency. The following some general information that should be considered to accomplish a good Extruder Audit.
General Extruder Audit Information from R&B Plastics Machinery
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6. nanocomposites a single screw mixing study of nanoclay filled polypropylene /slideshow/6-nanocomposites-a-single-screw-mixing-study-of-nanoclay-filled-polypropylene/16275586 6-nanocompositesasinglescrewmixingstudyofnanoclay-filledpolypropylene-130131080703-phpapp02
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Thu, 31 Jan 2013 08:07:03 GMT /slideshow/6-nanocomposites-a-single-screw-mixing-study-of-nanoclay-filled-polypropylene/16275586 rbplastics@slideshare.net(rbplastics) 6. nanocomposites a single screw mixing study of nanoclay filled polypropylene rbplastics <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/6-nanocompositesasinglescrewmixingstudyofnanoclay-filledpolypropylene-130131080703-phpapp02-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br>
6. nanocomposites a single screw mixing study of nanoclay filled polypropylene from R&B Plastics Machinery
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An experimental investigation into solids conveying /slideshow/an-experimental-investigation-into-solids-conveying/15832754 6-anexperimentalinvestigationintosolidsconveying-130102165321-phpapp02
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Wed, 02 Jan 2013 16:53:21 GMT /slideshow/an-experimental-investigation-into-solids-conveying/15832754 rbplastics@slideshare.net(rbplastics) An experimental investigation into solids conveying rbplastics <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/6-anexperimentalinvestigationintosolidsconveying-130102165321-phpapp02-thumbnail.jpg?width=120&amp;height=120&amp;fit=bounds" /><br>
An experimental investigation into solids conveying from R&B Plastics Machinery
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https://cdn.slidesharecdn.com/profile-photo-rbplastics-48x48.jpg?cb=1523184340 R&B Plastics Machinery is a manufacturer of blow molding machine, single screw plastic extruders and extruder process screws that can be custom configured to meet the most demanding of process applications. Our experienced technical staff will engineer machinery to provide maximum-output and superior performance. With one of the most comprehensive field-service/support groups in the industry, R&B Plastics Machinery can ensure your machinery remains current. This includes making sure plant personnel are properly trained to be safe, efficient plastics processors. For more than 32-years, R&B Plastics Machinery has excelled at working with companies like yours to develop creative solutions www.rbplasticsmachinery.com/ https://cdn.slidesharecdn.com/ss_thumbnails/solidsconveyingconsistencyarticle030613-141204084310-conversion-gate01-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/solids-conveying-consistency-article-030613/42353554 Solids conveying consi... https://cdn.slidesharecdn.com/ss_thumbnails/screwcoolingarticle122712-141008155932-conversion-gate02-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/extruder-screw-cooling/40038403 Extruder Screw Cooling https://cdn.slidesharecdn.com/ss_thumbnails/screwandbarrelweararticle012012-140911085756-phpapp02-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/screw-and-barrel-wear/38972617 Screw and barrel wear