Pressure-sensitive adhesive and detachable strip formed from it
First Claim
1. A method of forming and releasing an adhesive bond, said method comprising adhering a pressure-sensitive adhesive strip to a sensitive substrate to form an adhesive bond, the sensitive substrate being susceptible to tearing, and the sensitive substrate being selected from the group consisting of paper and wallpaper, and thereafter releasing the adhesive bond by peeling the adhesive strip from the substrate, wherein the adhesive strip comprises a pressure-sensitive adhesive composed at least of:
- a vinylaromatic block copolymer,a solid tackifying resin having a softening temperature by the ring-and-ball method of more than 30°
C. anda resin which is liquid at room temperature (23°
C.),the fraction of liquid resin accounting for at least 40% by weight, based on the total amount of resin.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is a pressure-sensitive adhesive for single- or double-sidedly tacky pressure-sensitive adhesive strips that are redetachable without residue or destruction both by extensive stretching substantially in the bond plane and by peeling. The pressure-sensitive adhesive is composed at least of (1) a vinylaromatic block copolymer, (2) a solid tackifying resin having a softening temperature by the ring-and-ball method of more than 30° C. and (3) a resin which is liquid at room temperature (23° C.), wherein the fraction of liquid resin accounts for at least 40% by weight, based on the total amount of resin. Also disclosed are strips formed from the adhesive and the use of the strips to form redetachable bonds.
-
Citations
7 Claims
-
1. A method of forming and releasing an adhesive bond, said method comprising adhering a pressure-sensitive adhesive strip to a sensitive substrate to form an adhesive bond, the sensitive substrate being susceptible to tearing, and the sensitive substrate being selected from the group consisting of paper and wallpaper, and thereafter releasing the adhesive bond by peeling the adhesive strip from the substrate, wherein the adhesive strip comprises a pressure-sensitive adhesive composed at least of:
-
a vinylaromatic block copolymer, a solid tackifying resin having a softening temperature by the ring-and-ball method of more than 30°
C. anda resin which is liquid at room temperature (23°
C.),the fraction of liquid resin accounting for at least 40% by weight, based on the total amount of resin. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
Specification