Preparation method of healthy type low temperature hot melt adhesive

Abstract

The invention relates to a preparation method of a healthy type low temperature hot melt adhesive, which comprises the following components by weight: 45-60 parts of TPU hot melt adhesive resin, 10-20 parts of PETG, 25-30 parts of a negative ion/bamboo-based activated carbon composite material, and 3-5 parts of a compatilizer. The method includes: (1) putting the raw materials into a material storage mechanism respectively to remove metals by high strong magnetism; (2) conveying the raw materials into a material cylinder to conduct complete stirring for 30-45min to an even state; and (3) subjecting the well mixed raw materials to secondary metal removal by strong magnetism, then conveying the treated raw materials to the feed hopper of a tape casting extruder, conducting constant speed feeding to a screw machine by a metering feed mechanism according to a preset quantity, carrying out 130-150DEG C high temperature melt mixing evenly by the screw machine to perform tape casting into a sheet, and then conducting cold pressing shaping. The healthy type low temperature hot melt adhesive provided by the invention contains organic bentonite, can significantly improve the quality homogeneity and breathability homogeneity of low temperature hot melt adhesive, and has greatly improved breathability and high quality.

Description

technical field [0001] The invention relates to a preparation method of hot melt adhesive, in particular to a preparation method of healthy low-temperature hot melt adhesive. Background technique [0002] The low-temperature hot-melt film has extremely high elasticity, excellent rigidity, and strong flexibility. The three-dimensional effect is more excellent after the front and rear are solidified and shaped. Smooth lines, comfortable to wear, excellent elasticity, long-lasting shape, no need to apply glue, good adhesion, extremely convenient operation, and can be reused, the product is green and environmentally friendly. Leftovers can be recycled and reused. It is an environmentally friendly material that replaces traditional materials. At present, the low-temperature hot-melt film on the shoe material market can be used in various types of shoe shaping midsoles and automotive interiors, luggage, handbags, stationery, toys, leather goods, furniture and other fields. [0...

AI Technical Summary

Problems solved by technology

[0003] The low-temperature hot-melt adhesives in the prior art have the following disadvantages: the air permeability is average, so that the inside of the shoes cannot completely remove the sweat from the human feet, and the effect of sweat-absorbing, dehumidifying and drying cannot be achieved, so that the long-term humid environment promotes the reproduction of bacteria and causes foot ulcers. A series of foot diseases such as athlete's foot, odor, and even rot and peeling occur. Similarly, poor moisture absorption and drying performance will also breed mold on car interiors and leather goods, reducing their service life.