Title:
HEAT-ACTIVATED ADHESIVE TAPE HAVING AN ACRYLIC FOAM-LIKE BACKING
Document Type and Number:
WIPO Patent Application WO2003011588
Kind Code:
A8
Abstract:
Heat-activated adhesive tape (10a) has a backing (14) comprising 88-92 % acrylic polymer containing: 35-45 % of a first alkyl acrylate monomer with alkyl groups containing 4 to 12 carbon atoms, 30-40% of a second alkyl acrylate monomer with alkyl groups containing 4 to 12 carbon atoms, 6-10% a first monoethylenically unsaturated polar copolymerizable monomer, 1-2% a second monoethylenically unsaturated polar copolymerizable monomer, 0.3-0.5% photoinitiator, 1-2% filler, 0.05-0.07% crosslinker/chain extender, and 8-12% hollow glass microspheres (12); and heat-activated adhesive layer on at least one side. A pressure-sensitive adhesive may be on the other side. A method for preparing the adhesive tape involves partially polymerizing an oligomer, forming a coating composition, onto a heat activated adhesive, contiguously covering the first liner, and polymerizing the composition on the liners between two banks of ultraviolet light while cooling to form a tape (10a).
Inventors:
LHILA RAMESH
PARK KWANG-YOL
DELPOZZO KAILA
DING JIAN LING
PARK KWANG-YOL
DELPOZZO KAILA
DING JIAN LING
Application Number:
PCT/US2001/024431
Publication Date:
December 11, 2003
Filing Date:
August 02, 2001
Export Citation:
Assignee:
SCAPA TAPES NORTH AMERICA INC (US)
International Classes:
C09J7/26; (IPC1-7): B32B7/12; B32B15/04; C23C18/00; B05D5/10
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