Process and device for foaming sponge with PCM sheet attached to surface

Abstract

The invention relates to a process and a device for foaming sponge with a PCM sheet attached to the surface. The process for foaming the sponge with the PCM sheet attached to the surface is characterized by comprising the following specific steps of: S1, mixing raw materials and putting the mixed raw materials into a box; S2, putting in the PCM sheet; and S3, foaming the raw materials. A mold closing driving cylinder is arranged between a mold frame and a lower mold frame, and a mold frame locking device is provided with a mold locking driving cylinder; the lower mold frame is provided with a cavity for accommodating foaming sponge raw materials, and the cavity is matched with an upper mold plate on the inner wall of the upper mold frame to form a foaming sponge forming cavity; a sponge foaming raw material is put into a forming box, a gel layer is coated on the upper surface of the sponge foaming raw material, the PCM sheet is coated on the upper surface of the sponge foaming raw material, and foaming forming is conducted after airing; in the foaming process, the foaming raw material of the sponge cannot intrude into the PCM sheet to influence the attractiveness of a finished product, and a huge extrusion effect cannot be generated between the foaming raw material of the sponge and the PCM sheet in the foaming process, so that the phenomena of generation of hard blocks at the contact position and incomplete foaming caused by extrusion are avoided, and the percent of pass of the product is improved.

Description

technical field [0001] The invention relates to the technical field of sponge foaming, in particular to a sponge foaming process with PCM sheets attached to the surface and a device thereof. Background technique [0002] Polyurethane sponge is a low-density PU with a foam density below 18kg / m3, and memory foam is a type of polyurethane sponge. At present, the main technologies for producing polyurethane sponge include negative pressure foaming technology, forced cooling technology and liquid carbon dioxide foaming technology. In addition to the characteristics of polyether sponge, polyurethane sponge also has unique characteristics such as acid and alkali resistance, moisture resistance, wear resistance, corrosion resistance, heat resistance, and good stretchability, and the product has uniform cells, good gloss, and textile It is widely used in high-end car interior decoration, high-end composite materials, flocking cloth, skin care products, printer consumables, filtratio...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a sponge foaming process and its device with PCM sheets attached to the surface, which can solve the problem that the PCM sheets attached to the general sponge surface are molded by placing PCM at the bottom of the molding box, resulting in extrusion of the foamed sponge. Embedding PCM sheets affects the aesthetics, and the connection between PCM sheets and foam sponges is incompletely foamed and there is a hard block structure, which leads to an increase in the rate of defective products

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