Separable Layer Of Bonding Material, Laminate And Method For Making Same

January 24, 2006

Patented is a laminate with a backing layer and a top layer, which are laminated together with a separable layer of permanently thermoplastic bonding material extruded by extrusion lamination. The laminate is made up of a mixture of silicone-modified low density polyethylene (LDPE), which is a LDPE graft copolymer with LDPE main chains and silicone side chains chemically bonded thereto, and which is a prereacted, linear crosslinked thermoplastic material. The laminate also includes a polyolefin, which is adherent in state of plastic flow. The backing layer is made of a member selected from the group consisting of paper, plastic film and a combination thereof. The paper is calendered craft paper with a density of more than 1 g/cm3 and a smoothness between 40 and 120 Sheffield Units.

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