Method for manufacturing thermoplastic polyurethane membrane capable of isolating migration of fabric coloring agent

Abstract

The invention discloses a fabric dye migrating barrier thermoplastic polyurethane membrane composition and a manufacturing method thereof. In the method, a layer of thermoplastic polyurethane (TPU) mixture with barrier fabric dye migrating function is attached on a common thermoplastic polyurethane membrane to prevent dye from migrating to the surface of the membrane to be polluted by a contactant. The thermoplastic polyurethane mixture with barrier function used by the invention is added with a part of metal or metal oxide powder which is evenly scattered in the thermoplastic polyurethane, and the migrating of the fabric dye is effectively prevented by the metal powder with certain concentration. Therefore, the composition can effectively solve the obvious migrating symptom due to the high temperature fusion of the thermoplastic polyurethane membrane and the fabric with poor dye fastness.

Description

[0001] This application is a divisional application of 200510063455.9 technical field [0002] The present invention relates to a thermoplastic polyurethane sheet (TPU Sheet), in particular to a composition and a manufacturing method of a TPU sheet with fabric dye migration barrier properties. Background technique [0003] Press, thermoplastic polyurethane (TPU) is a kind of synthetic rubber (Synthetic Rubbers), which has the advantages of durability and toughness, not easy to scratch, not easy to lose shape after forming, strong insulation and high heat resistance. And because TPU has excellent physical and chemical properties, it can be widely used in different fields. [0004] Generally, the tertiary processing methods of thermoplastic polyurethane diaphragms are mostly processed and pasted on the fabric by high-frequency high-temperature hot-cutting, and the instantaneous temperature of the processing can be as high as 300°C or more; however, fabrics with poor color fast...

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a composition of fabric dye migration barrier thermoplastic polyurethane diaphragm and its manufacturing method, which aims at improving the problem of fabric dye migration caused by thermoplastic polyurethane diaphragm in high-frequency, high-temperature welding and hot-cutting processing, so as to effectively Avoid fabric dye migration phenomenon, and completely solve the obvious migration phenomenon caused by the high-temperature welding of known thermoplastic polyurethane diaphragms and fabrics with poor color fastness

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