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Author
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Topic: Sintering??
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jobemay
Member Posts: 4
From:
Registered: May 2003
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posted May 14, 2003 03:41 PM
  
I need help on the topic of Extrusion by Sintering on textiles. My understanding of this process is that the textile is passed under an extruder that coates the textile with unheated poly pellets. The textile and pellets then go through a heater of some type to melt the poly into the fibers. The amount of poly put on the textile is controlled by load cells weighing the textile after it comes out of the extruder. Can someone help me or point me to some help.IP: Logged |
zabielski
Senior Member Posts: 142
From:McHenry, IL USA
Registered: Nov 2002
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posted May 15, 2003 07:41 AM
Sintering is simply "pressure forming" minute particles by compression.The only polymer that I can think of that requires sintering is "Ultra High Molecular Weight High Density Polyethylene" (UHMWHDPE). It does not truly melt but can be forced by pressure to "stay together". Pellets though are hard to come by as it is normally in a powder form. This material has a very high abrasion resistance, and a very low coefficient of friction (a bit more than TEFLON (Polytetrafluoroetylyne). T o coat a fabric in general, either extrusion coating or lamination is generally used. In extrusion coating, a molton polymer is coated onto the surface as it passes under the die extrusing it. In lamination, a polymer is compression pressed into the fabric, but the polymer is normally softened near it'smelting point. Get's to be pretty tricky. Can you disclose the specific fabric, and application? This would help us to understand what you are trying to accomplish. IP: Logged |
jobemay
Member Posts: 4
From:
Registered: May 2003
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posted May 15, 2003 08:53 AM
zabielsk,
I am looking at back coating a tufted carpet with a 10 oz 1400 dyn, Solution Dyed, Nylon 120 gram SBPET primary backing; 610 gram PE back coat construction. The process I am looking for is to dry coat the carpet with the PE then send it through an oven to melt the PE for better adhesion. I am looking for any information I can find on the process and equipment. THANKS
IP: Logged |
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