| 摘要 |
PCT No. PCT/CH82/00103 Sec. 371 Date Apr. 27, 1984 Sec. 102(e) Date Apr. 27, 1984 PCT Filed Aug. 30, 1982 PCT Pub. No. WO84/00943 PCT Pub. Date Mar. 15, 1984.Sheet material for making a sealed isothermal package comprises a flexible outer sheet of polyvinyl having a shiny reflective outer surface. The entire inner surface of the outer sheet is coated with pressure sensitive adhesive. An inner heat insulating layer of plastic foam is bonded to the inner side of the outer sheet by the adhesive. The inner insulating layer is of lesser area than the outer sheet so as to leave marginal areas of the adhesive surface of the outer sheet exposed for adhesion to underlying portions of the sheet material when the sheet material is wrapped around an object to be packaged. The insulating layer is of sufficient thickness that when the sheet material is wound in a roll, the exposed adhesive marginal areas are spaced apart so that no release backing material is required. |
