Extensible flatback adhesive sheet
AssigneeMinnesota Mining and Manufacturing Company
InventorFrancis A. Schurb
Life of this patent
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Abstract
The present invention provides an adhesive sheet that is extensible and conformable. The sheet comprises a non-creped flatback paper backing comprising cellulosic fibers and an elastomeric saturant and having an elongation at break of at least 8%; and an adhesive coating on at least a portion of at least one major surface of said backing. No mechanical means is used to generate extensibility or conformability in the backing of the adhesive sheet of the invention. The adhesive sheet combines all the advantages of a smooth flatback tape and the extensibility and conformability of a creped or microcreped tape.
Claims16
An adhesive sheet, comprising:
- (a) a non-creped flatback paper backing comprising cellulosic fibers and an elastomeric saturant and having an elongation at break of at least 10% and
- (b) an adhesive coating on at least a portion of at least one major surface of said backing,
- wherein no mechanical means is used to generate extensibility or conformability in said backing.
A die-cut masking assembly comprising:
- (a) at least one sheet of a non-creped flatback paper backing of a predetermined design or configuration wherein said paper backing comprises cellulosic fibers and an elastomeric saturant and has an elongation at break greater than 10%;
- (b) an adhesive coating on at least a portion of at least one major surface of said paper backing, and
- (c) a release liner to which the adhesive composition is releasably adhered,
- wherein no mechanical means is used to generate extensibility in the backing.
A method of making an adhesive tape comprising coating an adhesive onto at least a portion of at least one side of a non-creped flatback paper backing containing an elastomeric saturant and having an elongation at break greater than 10%, wherein no mechanical means is used to generate extensibility in the backing.
Dependencies are inferred from the claim text.