Burr-proof thermoplastic polyurethane elastic body conveying belt for food industry and manufacture method thereof

Abstract

The invention relates to a burr-proof thermoplastic polyurethane elastic body conveying belt for food industry, which has the total thickness being 1.2 to 1.5mm and sequentially comprises a covering surface layer, surface layer fabrics, a pasting layer and bottom layer fabrics from top to bottom, wherein the fabrics are respectively formed by two warp yarns and one weft yarn through plain interweaving, in addition, the bottom layer fabrics are soaked with polyurethane (PU) glue water, and both the covering surface layer and the pasting layer are made of thermoplastic polyurethane (TPU). A manufacture method comprises the following steps that: the surface layer fabrics and the bottom layer fabrics are formed, so the fabric surface temperature reaches 180 to 190 DEG C, the front side and the back side of the surface layer fabrics are subject to prime coating by aqueous polyurethane glue water, and then, the surface layer fabrics are placed into a baking oven to be dried; the bottom layer fabrics are soaked into a soaking tank of the aqueous polyurethane glue water, are rolled by an anilox roller and are placed into the baking oven to be dried; the surface layer fabrics and the bottom layer fabrics are calendered and pasted; and a TPU covering surface layer is calendered on the surface of a semi-finished product. The burr-proof thermoplastic polyurethane elastic body conveying belt and the manufacture method have the advantages that periphery burrs are prevented from being mixed into food in the food conveying process, the food pollution is reduced, the burrs are reduced, the damage to two sides of the conveying belt is reduced, the post hemming tidying is not needed, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of manufacturing light conveyor belts, in particular to an anti-burr thermoplastic polyurethane elastomer conveyor belt used in the food industry and a manufacturing method thereof. Background technique [0002] The light conveyor belt used in the food industry is a green environmental protection product. With the improvement of people's living standards. The increasing awareness of environmental protection and the concern for health not only require food (products) not to be polluted by pesticides during the production process, but also hope that the entire processing process meets safety and hygiene requirements. [0003] Conveyor belts for the food industry are widely used in the food industry or grain sector to transport bulk, unloaded, and boxed grain, biscuits, chocolate, puffed food, candy, fruit and vegetable processing, poultry and meat processing and other related industries. Hygiene is the most ...

AI Technical Summary

Problems solved by technology

[0004] However, the existing TPU conveyor belt fabrics used in the food industry generally use PET (polyethylene terephthalate) filaments, PET staple fibers or pure cotton fabrics. It cannot be firmly fixed, and it is prone to burrs during use, which will cause the surrounding wool to be mixed into the food during the process of conveying food, causing food pollution; on the other hand, the wool will easily cause damage to both sides of the conveyor belt. Increase the number of snaking adjustments during operation, which will affect the normal use of the conveyor belt in severe cases

In order to reduce fuzz, the conveyor belt generally adopts the "wrapping" method, but the subsequent finishing process is relatively cumbersome, especially for long-distance conveyor belts. The "wrapping" process takes a long time, which seriously affects its production efficiency

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