Glossiness satisfactory heat seal Characteristic polyolefine type foaming film

摘要

PROBLEM TO BE SOLVED: To provide a polyolefinic foamed film enhanced in the glossiness of its surface layer, excellent in appearance and having heat sealability.;SOLUTION: The heat sealable polyolefinic foamed film is a laminated polyolefinic foamed film constituted of a surface layer (B), a foamed layer (A), an intermediate layer (C) and a sealing layer (D) and the surface layer (B) and the intermediate layer (C) are not foamed substantially. In a case that the thickness of the film is 30 μm or below, the total light transmissivity of the film according to JIS K 7105 becomes 15% or below. The surface layer (B) contains 50-80 pts.wt. of a polyolefinic resin with a melt flow rate of 7.0 or above and the glossiness at 45° of the surface layer (B) is 110% or above.;COPYRIGHT: (C)2007,JPO&INPIT