Method for producing textile products, products obtainable therefrom and method to reclaim the products

Patent metadata

Field	Value
Publication number	US-10428250-B2
Application number	US-201715431662-A
Country	US
Kind code	B2
Filing date	Feb 13, 2017
Priority date	Jun 10, 2013
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

The present invention pertains to a method for manufacturing a laminated textile product comprising providing a first intermediate product comprising a primary backing having a front surface and a back surface, and yarns stitched into the primary backing, the yarns extending from the front surface of the backing material, feeding the intermediate product along a body having a heated surface, the back surface being pressed against the said heated surface, to at least partly melt the yarns present in the intermediate product to bond the yarns to the backing, wherein the part of the back surface that is pressed against the heated surface has a relative speed with respect to the heated surface, so as to provide a second intermediate product having a calendered back surface, providing a dimensionally stable carrier sheet or secondary backing, and connecting the second intermediate product to the carrier sheet by providing a hot melt adhesive between the calendered surface and the sheet, and pressing the sheet to the second intermediate product to form the textile product.

First claim

The invention claimed is:

1. A hot melt adhesive comprising a polymer P in an amount of at least 50% by weight of the hot melt adhesive composition, wherein
the polymer P is a polyester which is a condensation polymerization reaction product of a dicarboxylic acid and a polyol having two hydroxyl groups per molecule, and wherein
the polymer P is semi-crystalline and has a melting point from 75 to 150° C., a glass transition temperature below 40° C. and a melt viscosity at 150° C. of lower than 100 Pa·s and higher than 8 Pa·s, wherein
the hot melt adhesive is thermoplastic.

2. The hot melt adhesive according to claim 1 , wherein the dicarboxylic acid is terephthalic acid, fumaric acid and/or adipic acid.

3. The hot melt adhesive according to claim 1 , wherein the polyol is ethylene glycol and/or 1,6-hexanediol.

4. The hot melt adhesive according to claim 1 , wherein the melt viscosity of polymer P at 150° C. is higher than 12 Pa·s.

5. The hot melt adhesive according to claim 1 , wherein polymer P has a melting point of polymer P is from 75 to 130° C.

6. The hot melt adhesive according to claim 1 , wherein the polyester is a condensation polymerization reaction product of at least one dicarboxylic acid selected from the group consisting of terephthalic acid, adipic acid and fumaric acid, with at least one alcohol selected from the group consisting of ethylene glycol and 1,6-hexanediol.

Assignees

• Dsm Ip Assets Bv

Inventors

• Tichelaar Michel Poul
• Koning Cornelis Eme
• Udding Jan Henderikus
• Westerhof Wilhelmina
• Reutelingsperger Chris
• Hofland Adriaan

Classifications

• D10B2503/04

  Floor or wall coverings; Carpets · CPC title

• D06N2213/02

  All layers being of the same kind of material, e.g. all layers being of polyolefins, all layers being of polyesters · CPC title

• B32B2037/1215

  Hot-melt adhesive · CPC title

• C08G63/183

  Terephthalic acids · CPC title

• Y02P20/582

  Recycling of unreacted starting or intermediate materials · CPC title