Processing method for flame-retardant anti-ultraviolet outer polyester bonded thread

Abstract

The invention discloses a processing method for a flame-retardant anti-ultraviolet outer polyester bonded thread. The processing method comprises the following steps of twisting polyester filaments into strands, processing the strands in one bath through a flame-retardant anti-ultraviolet finishing solution and a resin adhesive; and bonding the surfaces of the strands to form a layer of transparent soft adhesive film at a high temperature, so that the flame-retardant anti-ultraviolet outer polyester bonded thread is prepared. According to the processing method for the flame-retardant anti-ultraviolet outer polyester bonded thread, the outer polyester bonded thread prepared by adopting the polyester filaments has the characteristics of high strength, fluffing free, breakage free, looseningfree, high temperature resistance, decoloration free, water prevention, mildew prevention and the like. The outer bonded thread is endowed with soft hand feeling by processing the outer polyester bonded thread by using a softening agent; a glue solution is reasonable in formula and convenient to prepare; the flame retardance and the ultraviolet resistance of the bonded thread are improved; the purpose of integrating flame retarding, ultraviolet resisting, aging resisting and high strength is achieved; a preparation process is simple; a processing process flow is simplified; the polyester strands are subjected to finishing and gluing in one bath; and therefore, the processing method has the advantages of water conservation, energy conservation, environment friendliness and high efficiency.

Description

technical field [0001] The invention specifically relates to a processing method of a polyester outer bonded yarn combining flame-retardant, anti-ultraviolet finishing and glue bonding. Background technique [0002] As the general sewing thread passes through the eye of the needle and is squeezed by the fabric, it is easy to twist and untwist, causing loose strands to break. The Bondi line is not easy to loose strands, has high strength, and is not easy to break. The outer Bondi thread is drawn and glued with a single thread, and the strands are bonded from the outside. The outer Bondi thread has low production cost and simple process. [0003] In addition to the advantages of ordinary Bondi threads, polyester outer Bondi threads also have the properties of high temperature resistance, no stretching, no discoloration, no lint, etc., and are waterproof and mildew-proof. They are suitable for making shoes, leather goods, handbags, bags, Toys, ribbons, wire weaving, clothing ...

AI Technical Summary

Problems solved by technology

However, there are still defects in some polyester outer Bondi threads on the market: 1. The limiting oxygen index of polyester fiber is about 22%, which is a combustible fiber, and it will melt and drip when burned, igniting other polymer materials or scalding the skin; 2. The production of polyester bondy thread is to comply with the market's requirements for strength, but under long-term sunlight, polyester bondy thread will inevitably age, fade, and decrease in strength; third, among all polyester flame retardants, the halogen flame retardant The agent is effective, but produces smoke and corrosive hydrogen halide gas when burned

At the same time, it solves the problem that the fabric is flame-retardant but the sewing thread is not flame-retardant, which leads to the decrease of the flame retardancy of the sewn product.

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