Production method and production device of vacuum insulated panel

Abstract

The invention provides a production method of a vacuum insulated panel, which comprises the following steps of: 1) manufacturing a lower film of the vacuum insulated panel: pressing a barrier film through a mold so as to form an accommodating cavity which is concave downwards along the thickness direction on the surface of the barrier film; (2) the filling core material is placed in the containing cavity, a rolled film serves as an upper film and is conveyed to an external two-edge sealing device, and two edges of the lower film and the upper film are subjected to hot-pressing sealing; openings for vacuum pumping are formed in the other two edges of the upper film and the other two edges of the lower film. And (3) air is pumped out through the opening under the vacuum condition, the inner vacuum state of the filling core material is kept, and the opening is subjected to hot-pressing sealing. The invention further provides a production device of the vacuum insulated panel, and the production device is used for achieving the production method.

Description

technical field [0001] The present invention relates to vacuum insulation panels and more particularly to the production of vacuum insulation panels. Background technique [0002] Vacuum insulation panel (VIP panel) is the abbreviation of Vacuum Insu lation Panel in English, and it is one of the vacuum insulation materials. It is composed of filling core material, gas adsorbent and barrier bag, and the vacuum insulation panel can be widely used in various industries. [0003] The existing structure of the vacuum insulation panel is that the filling core material is manually placed into a barrier film bag with one side open and three sides sealed. This barrier film is mainly made of one of PE, CPP, PP or EVOH. Under vacuum conditions, the air inside the core material is drawn out through the opening on one side of the barrier film, and the vacuum insulation panel is heat-sealed in a vacuum chamber. The barrier film of this structure is relatively thin, with a thickness of 0...

AI Technical Summary

Problems solved by technology

[0005] ② It takes a long time to achieve the required vacuum degree, which consumes a lot of manpower and material resources, and the production cost is high

[0006] ③Because only one end of the barrier bag is vacuumed at the outlet, and there is no outlet on the other side, the suction force will be uneven throughout the vacuum insulation panel, and wrinkles will appear

[0007] ④Because the vacuum insulation panels are made of thin barrier bags, the sealing and edge sealing structure is not strong enough, and the transition folds at right angles are more obvious. It is easy to be damaged after long-term use, and the air leaks from the inside, which affects the vacuum insulation effect

[0008] ⑤The bag-shaped film with one end open, filled with core material inside, under the vacuum chamber, the upper and lower films will naturally arch, and the fold phenomenon is more obvious after sealing, and the arc cannot be naturally transitioned, which affects the appearance

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