Patent ID: 7695810

Claim:
A strip tape for bonding together overlap portions of packaging material facing the interior surface of a packaging container, said strip tape comprising: (a) a center layer containing a polar resin; and (b) at least one polyolefin layer laminated, via a bonding layer on each face of the center layer, wherein (c) the bonding layer contains an ethylene-methacrylic acid-alkyl acrylate random copolymer; whereby the strip tape comprises the structure (b)-(c)-(a)-(c)-(b) wherein layers (c) are in direct contact with layer (a), and layers (b) are in direct contact with respective layers (c); wherein the ethylene-methacrylic acid-alkyl acrylate random copolymer contains methacrylic acid in an amount of 3-5 wt.% and an alkyl acrylate in an amount of 0.05- 0.2 wt. %;and wherein the ethylene-methacrylic acid-alkyl acrylate random copolymer has a melt flow rate of 11-15 g/10 minutes, a density of 0.927-0.932 g/cm 3 , and a Vicat softening point of 68-72° C.