| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyethylene-based resin laminated foam which has excellent resistance to cracking and tearing while sufficiently retaining mechanical physical properties such as rigidity, a cushioning property, etc. SOLUTION: The polyethylene resin laminated foam with 2 to 8 mm thickness and 150 to 350 MPa bending modulus, which has polyethylene-based resin layers formed on both surfaces of a polyethylene-based resin foamed layer with 150 to 350 g/L apparent density and lower than the 40% proportion of interconnected cells. In this polyethylene resin laminated foam, the ratio "a/b" of the tensile elongation "a" (mm) of the polyethylene-based resin layer to the 25% compression strength "b" (MPa) of the polyethylene-based resin laminated foam, is not less than 2.4 mm/MPa, and the 25% compression strength "b" (MPa) of the polyethylene-based resin laminated foam is 0.5 to 1.5 MPa. Thus the resultant polyethylene-based resin laminated foam shows excellent resistance to cracking and tearing while sufficiently retaining the mechanical properties such as rigidity, the cushioning property, etc. COPYRIGHT: (C)2007,JPO&INPIT
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