The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 1999
Filed:
Mar. 28, 1997
Jeffrey S Lindquist, Cottage Grove, MN (US);
Janelle C Cameron, Mendota Heights, MN (US);
Eugene R Simmons, Vadnais Heights, MN (US);
H. B. Fuller Licensing & Financing, Inc., St. Paul, MN (US);
Abstract
This invention relates to an envelope coated with a hot melt pressure sensitive adhesive composition preferably comprising a) from about 10% to about 40% by weight in the adhesive of at least one block copolymer selected from the group consisting of styrene-isoprene-styrene block copolymers, styrene-butadiene-styrene block copolymers and mixtures thereof wherein the block copolymers comprise from about 15% to about 35% styrene by weight in the copolymer and diblock contents from about 0% to about 90% by weight in the copolymer; and b) from about 60% to about 90% by weight in the adhesive of a modifier selected from the group consisting of solid tackifying resins, liquid tackifying resins, liquid elastomers and mixtures thereof. The invention further relates to an improved oil-free pressure sensitive adhesive that is low in viscosity and provides a destructive bond and resists deformation of high density spun polyolefin materials.