Belt leather piece and production method thereof

Abstract

The invention discloses a belt leather piece and a production method thereof. The production method includes that PU (poly urethane) synthetic leather 12% in thickness is taken as a surface layer to be paved on a round roll in the most front of a multi-roll traction forming machine, and micro fiber 7% in thickness is taken as a bottom layer to be paved on the other round roll in the most front of the multi-roll traction forming machine; raw material polyurethane particles in the middle are plasticized through a plastic extruding machine at a high temperature and flow between a surface material and a bottom material, and the front round rolls of the multi-roll traction forming machine are used to roll on the surface layer, the micro-fiber bottom layer and a middle high-temperature polyurethane layer 81% in thickness to obtain a novel leather piece by inward turning roll-off bonding technology. Therefore, a belt is reduced in weight, prolonged in service life, improved in elasticity, and cannot be too soft or too hard due to change of temperature. The micro-fiber bottom layer is compact in composition and less prone to being separated from the middle raw materials, adverse reaction does not occur between the plasticized polyurethane layer and leather edge oil, and the belt with the edge coated by oil is not sticky. In addition, the production method is simple and low in production cost, the belt is improved in quality and prolonged in service life, and adaptive capacity of the belt to an environment is improved.

Description

technical field [0001] The invention belongs to the technical field of belt manufacture, in particular to a belt leather sheet and a preparation method thereof. Background technique [0002] The existing belt, the surface layer is secondary PVC synthetic leather, the intermediate raw material is secondary recycled PVC granular layer, and the bottom is suede. After the secondary raw material secondary PVC granular layer is high-temperature, plasticized, extruded and bonded, it is cut into one body. Finished belts, the bottom layer is easy to separate from the middle material when the finished product is used, and the belt is also easy to break, and the belt responds greatly to changes in climate temperature: it should be made into a soft belt in early winter, but in early summer due to the high temperature, The belt is soft like a rubber band and will break when pulled, so it is too soft to use; and in early summer, it must be made into a rigid belt, but in early winter, as t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a belt leather sheet and its preparation method, aiming at solving the problem that the traditional belt has a large reaction to temperature changes and is relatively heavy; the belt edge and leather edge oil are easy to stick; the use cycle is short, resulting in waste of raw materials and The problem of environmental pollution

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