Recoverable carpet and production method thereof

Abstract

The invention provides a recoverable carpet and a production method thereof. The recoverable carpet is of a laminated structure and sequentially comprises a nonwoven fabric layer, a hot melting composite adhesive layer, carpet bottom cloth and a carpet fluff yarn layer from bottom to top. The hot melting composite adhesive layer comprises, by mass, 30% of polypropylene and polyethylene thermoplasticity high polymers, 23% of recovered chemical fiber carpet yarn waste, 18% of recovered thermoplasticity waste, 12% of calcium carbonate, 10% of pulverized fuel ash, 0.8% of dispersing agents, 3% of fire retardant, 3.0% of functional auxiliaries and 0.2% of coloring agents, and the mixture of the components is mixed and refined into hot melting composite adhesive master batches through a threaded rod extruding machine. The carpet is free of foreign smell and can be completely recovered or repeated recovered; by menas of the process method, the problems that due to the fact that a PVC bottom layer, vinyl acetate monomer, polyurethane, butadiene-styrene rubber or pitch are used as various materials of adhesives of an existing carpet, the carpet can not be completely recovered at a time and needs to be screened are solved, the problem of smell of plasticizer which is used is solved, the recovery cost is reduced, and the recovery of resources and environment protection are facilitated.

Description

technical field [0001] The invention belongs to the technical field of polymer materials and carpet production, and in particular relates to a recyclable carpet and a production method thereof. Background technique [0002] At present, the carpet mainly has several materials such as polypropylene, nylon, polyester, wool, etc. The back of the carpet mainly includes asphalt bottom, PVC bottom, polyurethane bottom, non-woven soft bottom, styrene-butadiene rubber, vinyl acetate glue, DOP, etc. PVC carpet The plasticizers commonly used in food products will release some pungent odors, which will make users feel uncomfortable after smelling them, which is not conducive to people's health. In addition, asphalt, PVC glue, polyurethane glue, non-woven fabrics, latex, etc. used in carpets are different. When recycling carpets and their waste, different materials need to be stripped and sorted, and various materials that cannot be mixed Separate recycling will bring many difficulties ...

AI Technical Summary

Problems solved by technology

[0002] At present, the carpet mainly has several materials such as polypropylene, nylon, polyester, wool, etc. The back of the carpet mainly includes asphalt bottom, PVC bottom, polyurethane bottom, non-woven soft bottom, styrene-butadiene rubber, vinyl acetate glue, DOP, etc. PVC carpet The plasticizers commonly used in food will release some pungent odors, which will make users feel uncomfortable after smelling them, which is not conducive to people's health

In addition, asphalt, PVC glue, polyurethane glue, non-woven fabrics, latex, etc. used in carpets are different. When recycling carpets and their waste, different materials need to be stripped and sorted, and various materials that cannot be mixed Separate recycling will bring many difficulties to the recycling of carpets, which is not conducive to the construction of a resource-saving society.

[0003] Therefore, how to solve the odor problem caused by the use of plasticizers, and improve the efficiency of carpet recycling, and develop a production process that uses thermoplastic materials for non-odor carpet tiles, which is conducive to carpet recycling, is an important issue to be solved urgently.

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