Multi-layer composite
AssigneeAvery Dennison Corporation
InventorsRobert J. Williams, William E. Kidon, Thanh Nguyen, Michael D. Hilston
Life of this patent
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Abstract
A composite laminate suitable for preparing release sheets or pressure-sensitive adhesive sheets is described. The composite laminate, in one embodiment, comprises (A) a substrate sheet of paper; (B) a first coating bonded to one surface of the substrate, said first coating comprising a radiation-cured composition acrylic comprising, prior to curing, a mixture of (i) at least one acrylated or methacrylated organic polyamino compound, and (ii) at least one acrylated or methacrylated organic polyhydroxy compound; and (C) a second coating bonded to the other surface of the substrate, said second coating comprising a polyolefin film.
Claims20
A composite laminate suitable for preparing release sheets or pressure-sensitive adhesive sheets comprising
- (A) a substrate sheet of paper;
- (B) a first coating bonded to one surface of the substrate sheet, said first coating comprising a radiation-cured acrylic composition comprising, prior to curing, a mixture of (i) at least one acrylated or methacrylated organic polyamino compound, and (ii) at least one acrylated or methacrylated organic polyhydroxy compound;
- and
- (C) a second coating bonded to the other surface of the substrate sheet, said second coating comprising a polyolefin film.
A composite laminate suitable for use as a release sheet comprising
- (A) a substrate sheet of paper;
- (B) a first coating bonded to one surface of the substrate, said first coating comprising a radiation-cured acrylic composition which comprises, prior to curing, (i) from 30% to about 80% by weight of at least one acrylated or methacrylated organic polyamino compound, and (ii) from about 20% to about 70% by weight of at least one acrylated or methacrylated organic polyhydroxy compound;
- (C) a second coating bonded to the other surface of the substrate, said second coating comprising an extruded polyethylene film;
- and
- (D) a third coating of a radiation-cured silicone release composition bonded to the exposed surface of the second coating of polyethylene film.
A composite laminate suitable for preparing release sheets or pressure-sensitive adhesive sheets comprising
- (A) a substrate sheet of paper;
- (B) a first coating bonded to one surface of the substrate sheet, said first coating comprising a radiation-cured acrylic composition comprising, prior to curing, a mixture of (i) at least one acrylated or methacrylated organic polyamino compound, characterized by the formula
- R--(--C(O)--C(X).dbd.CH.sub.2).sub.n (I)
- wherein R is derived from a polyamine, X is hydrogen or a methyl group, and n is an integer of at least 2, and (ii) at least one acrylated or methacrylated organic polyhydroxy compound;
- R--(--C(O)--C(X).dbd.CH.sub.2).sub.n (II)
- wherein R is derived from a polyhydroxy compound, X is hydrogen or a methyl group, and n is an integer of at least 2;
- and
- (C) a second coating bonded to the other surface of the substrate sheet, said second coating comprising a polyolefin film.
A composite laminate suitable for use as a release sheet comprising
- (A) a substrate sheet of paper;
- (B) a first coating bonded to one surface of the substrate, said first coating comprising a radiation-cured acrylic composition which comprises, prior to curing, (i) from 30% to about 80% by weight of at least one acrylated or methacrylated organic polyamino compound, characterized by the formula
- R--(--C(O)--C(X).dbd.CH.sub.2).sub.n (I)
- wherein R is derived from a polyamine, X is hydrogen or a methyl group, and n is an integer of at least 2, and (ii) from about 20% to about 70% by weight of at least one acrylated or methacrylated organic polyhydroxy compound
- R--(--C(O)--C(X).dbd.CH.sub.2).sub.n (II)
- wherein R is derived from a polyhydroxy compound, X is hydrogen or a methyl group, and n is an integer of at least 2;
- (C) a second coating bonded to the other surface of the substrate, said second coating comprising an extruded polyethylene film;
- and
- (D) a third coating of a radiation-cured silicone release composition bonded to the exposed surface of the second coating of polyethylene film.
Dependencies are inferred from the claim text.