Composition of barrier thermoplastic polyurethane diaphragm with textile dye migration prevention function and method for preparing same

Abstract

The invention discloses a textile dye transitional obstruct thermoplastic polyurethane membrane composition and its manufacturing process, which consists of applying the thermoplastic polyurethane (TPU) compound with the function of obstructing the textile dye form transitting onto the general thermoplastic polyurethane membrane to obstruct the dye to transit onto the membrane surface to pollute the contact materials; and because the thermoplastic polyurethane compound with an obstructing function is added with some metal or metallic oxide powders, those powders evenly disperse in thermoplastic polyurethane, and metallic powders with finite concentration can effectively obstruct the textile dye from transitting, therefore, the invention can effectively solve the apparent transitional phenomenon caused by high-heat weld of the thermoplastic polyurethane membrane with the unfast -color textile.

Description

technical field [0001] 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 [0002] 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. [0003] 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 fastness, such as polyester fiber (Polyester) and Nylon fiber (Nylon), whic...

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Problems solved by technology

[0005] 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 to improve 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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