Environment-friendly slowly-cured TPU hot melt glue film for insole and production method of environment-friendly slowly-cured TPU hot melt glue film

Abstract

The invention relates to an environment-friendly slowly-cured TPU hot melt glue film for an insole and a production method of the environment-friendly slowly-cured TPU hot melt glue film, and belongsto the field of TPU new materials. The TPU hot melt glue film is prepared from the following components in percentage by weight: 50%-90% of TPU particles, 10%-40% of tackifying resin, and 4%-10% of afunctional additive, wherein the hardness of the TPU particles is 60-90 A, the melting point of the TPU particles is 50-100 DEG C, and the melt flow index of the TPU particles is 10-60 g / 10min@150 DEGC; the tackifying resin is C5 resin or C9 resin, the softening point of the tackifying resin is 80-100 DEG C, and the viscosity of the tackifying resin at 160 DEG C is 1000-6000 CPS; the functional additive is an antioxidant and an ultraviolet absorber; and all the components of the TPU hot melt glue film are placed in an extruder proportionally, and extruded by the extruder and then release paper is coated with all the components , rolling-up is conducted, and thus the TPU hot melt glue film can be prepared. The environment-friendly slowly-cured TPU hot melt glue film for the insole adopts environment-friendly TPU materials and is environmentally friendly, harm of white glue and yellow glue to the body of workers is avoided, the curing speed is low while the cost is saved, and thus the attaching quality between all layers of the insole is improved.

Description

technical field [0001] The invention relates to the field of new TPU materials, in particular to an environment-friendly slow-curing TPU hot-melt adhesive film for insoles and a production method thereof. Background technique [0002] The name of TPU is thermoplastic polyurethane elastomer. It is mainly divided into polyester type and polyether type. It has a wide range of hardness, wear resistance, oil resistance, transparency and good elasticity. It is widely used in daily necessities, sporting goods, toys, decorative materials and other fields. TPU film has the characteristics of good toughness, high strength, odorless, non-toxic, and heat-sealing processing. [0003] In the prior art, insoles are generally composed of an elastic bottom layer and a cloth surface layer. During production, the elastic bottom layer is first made, and then glue is applied on the surface of the elastic bottom layer to fit the cloth layer, and finally cut and trimmed. Finished products, this p...

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Problems solved by technology

[0003] In the prior art, insoles are generally composed of an elastic bottom layer and a cloth surface layer. During production, the elastic bottom layer is first made, and then glue is applied on the surface of the elastic bottom layer to fit the cloth layer, and finally cut and trimmed. Finished products, this process needs to be pasted with glue, and the glue is harmful to the environment and the human body, and because the glue cures quickly, the quality of the bonding between the layers of the insole is not high. Therefore, it is necessary to develop an environmentally friendly insole. Type Slow Curing TPU Hot Melt Adhesive Film

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