CPC B29D 35/142 (2013.01) [A43B 13/04 (2013.01); A43B 13/12 (2013.01); B29B 11/08 (2013.01); B29D 35/122 (2013.01); B29K 2075/00 (2013.01); B29K 2105/048 (2013.01)] | 20 Claims |
1. A method for producing a pre-manufactured TPU article, wherein the method comprises melting TPU within a plasticizing unit of an injection molding machine to form a material, and then injecting the material into a mold to form the pre-manufactured article, wherein the method further comprises:
a) adding an additive to increase the viscosity of the material of the pre-manufactured TPU article in an amount from 1 to 15% by weight based on 100% by weight of the TPU material of the pre-manufactured article, wherein the material consists of TPU and wherein the additive consists of a single additive, or
b) subjecting the material of the pre-manufactured TPU article to at least one annealing step at a temperature in the range of from 100 to 150° C. and for a time period from 2 to 20 hours, wherein the material consists of TPU or TPU and a single additive.
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