Vacuum insulated panel and production method thereof

• Main Authors: ZHANG CHANGLONG, ZENG QINGJIANG, GU CHUNSHENG
• Format: Patent
• Language: Chinese; English
• Published: 12.04.2022
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PIPES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a vacuum insulated panel and a production method thereof, and belongs to the technical field of thermal insulation materials. The vacuum heat insulation plate is composed of a glue-coated aluminum foil bag and an internal heat insulation core plate, aluminum foil used for packaging is subjected to phosphating treatment and then is coated with butyl rubber in a roller coating mode, buffering is provided through the toughness of the butyl rubber, collision damage and air leakage are avoided, the butyl rubber has good air tightness, the internal vacuum environment can still be kept even if the aluminum foil is damaged, and good heat insulation performance is maintained; an expansion area is formed in the heat insulation core plate by utilizing the water absorption expansibility of bentonite, polyurethane continues to foam between the surface layers of the expanded bentonite to form a porous structure, the bentonite evaporates, loses water and shrinks, adjacent foaming holes are communica