Slipper or sole material foaming technology and in-mold foaming device

Abstract

The invention relates to the field of slipper or sole foaming technologies, and discloses a slipper or sole material foaming technology. The slipper or sole material foaming technology comprises the following steps that step (1), a cold blank is placed into a mold capable of being subjected to microwave penetrating; step (2), a mold cavity of the mold is vacuumized or the mold is placed in a vacuum environment; step (3), the cold blank is subjected to microwave heating to 170-180 DEG C under the vacuum condition; and step (4), after the step (3), the cold blank is kept at the constant temperature of 170-180 DEG C through microwaves under the vacuum condition, and the cold blank is subjected to vulcanization foaming. The mold is a ceramic mold. The invention further discloses an in-mold foaming device for the foaming technology. By utilizing the characteristic that the ceramic mold can be subjected to microwave penetrating, the cold blank in the ceramic mold can reach the foaming temperature instantly in a unified mode, the cold blank is heated evenly through microwave heating, thus the foaming vulcanization time of whole foaming materials is greatly shortened, accordingly, the foaming vulcanization time is shortened, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of foaming slippers or shoe soles, in particular to a material foaming process for slippers or shoe soles and an in-mold foaming device. Background technique [0002] Compared with traditional solid sole materials, foamed sole materials have the advantages of lightness and comfort, excellent physical properties, and low cost, and have great development potential in the sole market. At present, foamed shoe sole materials are developed around "rubber-plastic blending, rubber-to-plastic": that is, one or more resins are used as the matrix, and different types of rubber are added for modification according to specific use requirements. Sole foam materials mainly include the following typical foam sole materials: 1. Polyvinyl chloride (PVC), which entered the shoemaking field at the earliest, has a large quantity, excellent mechanical properties, convenient processing, and low cost, but is poor in environmental protection....

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the disadvantages in the prior art that the mold is a metal mold, microwave heat conduction is not possible, the foaming material cannot be heated by microwave, the heat transfer time is long, the material is heated unevenly, the vulcanization and foaming time is too long, and the production efficiency is slow. The mold made of ceramic material uses microwave to heat the foaming material, so that the foaming material is heated evenly, the process time is short, the mold cooling time is short, and the production efficiency is high. A foaming process and in-mold foaming device for slippers or sole materials