A method of easily deforming a plate-shape vacuum insulation material and producing a smaller but highly effective insulation container, comprising steps of inserting a thermoplastic open-celled rigid foam as a core material into a packet composed of gas barrier film, evacuating and sealing the packet...http://www.google.sh/patents/US20020168496?utm_source=gb-gplus-sharePatent US20020168496 - Method of deforming vacuum heat insulation material, method of fixing vacuum heat insulation material, refrigeration, cold storage vessel, and heat insulation box body
