Method for manufacturing halogen-free, washing-resistant and flame retardant polyamide hook and loop fastener

Abstract

The invention relates to a method for manufacturing a halogen-free, washing-resistant and flame retardant polyamide hook and loop fastener. The method comprises the following steps: preparing a flame retardant finishing working solution; carrying out flame-retardant finishing on the polyamide hook and loop fastener and dehydrating the polyamide hook and loop fastener; preparing flame retardant viscose; spraying the flame retardant viscose on the front of the hook and loop fastener; coating the flame retardant viscose on the back of the hook and loop fastener; and drying and baking the hook and loop fastener. The dyes and chemicals, flame retardant finishing agents and resins which are used in the production process of the hook and loop fastener do not contain halogen or heavy metals. Compared with the prior art, the hook and loop fastener not only improves the flame retardant effect, reduces the toxic gases released in the combustion process, has high visibility, conforms to the standard of the Boeing company in America and improves the safety of personnel and transportation when being used for transportation, but also can be washed and reused and simultaneously solves the problem that the fastness to washing can not meet the requirement when the popular flame retardants on the market are directly used for manufacturing the halogen-free and flame retardant polyamide hook and loop fastener.

Description

technical field [0001] The invention relates to a method for manufacturing a nylon Velcro tape, in particular to a method for manufacturing a halogen-free washable and flame-retardant nylon Velcro tape. Background technique [0002] In the early stage, flame-retardant hook and loop fasteners were developed, and halogens (organic bromine and organic amine polymers) were added to flame-retardant products to increase the ignition point. The advantage is that the ignition point is higher than that of ordinary polymer materials, about 300 ° C. When burning, it emits halogenated gas, absorbs oxygen quickly, and extinguishes the fire. However, its disadvantage is that when the concentration of smoke released is high, the decrease in visibility will cause the escapers to fail to identify the escape route. In addition, when the halogen gas released by the combustion of halogen-containing polymers combines with water vapor, it will generate corrosive and harmful gases. Gas (hydrogen ...

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Problems solved by technology

However, its disadvantage is that when the concentration of smoke released is high, the decrease in visibility will cause the escapers to fail to identify the escape route. In addition, the halogen gas released by the combustion of halogen-containing polymers will form corrosive and harmful gases when combined with water vapor. Gas (hydrogen halide), causing corrosion to some equipment and buildings

[0003] Recently developed a halogen-free flame-retardant hook and loop fastener, by cleaning the nylon hook and loop - dyeing with halogen-free and heavy metal-free dyes - dehydration - gluing with water-based, non-toxic, super-hard PU resin - drying - use Halogen-free flame-retardant finishing agent for finishing-drying-using halogen-free and heavy metal-free hot-melt adhesives to carry out hot-melt adhesive finishing on nylon hook and loop fasteners, and made halogen-free flame-retardant hook and loop fasteners. This kind of halogen-free flame-retardant Nylon Velcro has completely overcome the potential safety hazards brought by the halogen in the Halogen Flame Retardant Velcro technology. However, the finishing process is water-based processing. Trains, automobiles and other transportation vehicles such as seat and bedding fasteners are used repeatedly after washing, which limits the use of flame-retardant hook and loop fasteners

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