Manufacturing method of sandwich board

Abstract

The invention belongs to the technical field of heat insulation materials and relates to a process method for manufacturing a sandwich board online through a composite extruded board and achieving automatic and continuous manufacturing of various sandwich boards. The method includes placing polystyrene granules, talcum powder, hexa-bromo-dodecane, foaming agent and colorant into a feeding machine, introducing compressed air into the feeding machine simultaneously, delivering raw materials coming out from the feeding machine into an extruding machine, machining the raw materials in the extruding machine to form the extruded board, cooling the extruded board, conducting roughening, edge milling and notching on the extruded board, delivering the machined extruded board into a color plate compounding machine to manufacture the sandwich board and cutting the sandwich board to obtain a sandwich board finished product. By means of the method, cold bridge and cold loss are effectively avoided, and stable effects of a product can be ensured. The method is simple in manufacturing process, reliable in principle, low in cost, good in product quality, obvious in economical and social benefit and environmentally friendly. The raw materials are easy to obtain.

Description

Technical field: [0001] The invention belongs to the technical field of preparation of thermal insulation materials, and relates to a process for preparing sandwich panels from on-line composite extruded panels, in particular to a method for preparing sandwich panels from on-line composite extruded panels, which realizes automatic and continuous preparation of various Kind of sandwich panel. Background technique: [0002] At present, the demand for sandwich panels in the domestic market has increased greatly every year. With the rapid development of the cold chain logistics industry, cold storage investment and construction have risen unprecedentedly. Market demand has given birth to the development of insulation, refrigeration materials and other related industries. It is a necessary material for the insulation of the new prefabricated cold storage maintenance system. The sandwich panel is composed of two layers of formed metal panels (or other material panels) and a polym...

AI Technical Summary

Problems solved by technology

The sandwich panel is composed of two layers of formed metal panels (or other material panels) and a polymer heat insulation core that is directly foamed and matured in the middle of the panels. The sandwich panel has the characteristics of light weight, high efficiency, thermal insulation and easy installation. and other characteristics, it is widely used in cold storage insulation layer and other fields; the production process of traditional sandwich panels is mostly made of extruded panel core materials by extruded panel production lines, and then the core materials are cooled and then sent to the sandwich panel production line for further processing. In the production of sandwich panels, the two processes are independent in time and space, and due to the production process of traditional extruded panels, the air in the cells of extruded panels cannot be cooled immediately after production, and will stabilize after continuing to expand for a period of time , it is difficult to closely combine the two when processing with the panel, especially after the compounding of the folds on both sides of the sandwich panel, due to the continuous expansion and contraction of the extruded board, the panel cannot be just joined with the extruded board, resulting in a board shape There is a certain degree of distortion, which causes the male and female grooves of the sandwich panel to be unable to be effectively inserted during installation, and gaps and other phenomena appear, resulting in cold bridges and running cold phenomena in these parts, which is not conducive to the insulation of the cold storage

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