3857731 is referenced by 142 patents and cites 7 patents.

A pressure-sensitive sheet construction having particular utility as a durable, reusable bulletin board surface, comprises a substrate bonded to at least one surface thereof a binder material; partially embedded in the exposed surface of the binder and protruding therefrom are inherently tacky elastomeric copolymer microspheres.

Title
Acrylate microsphere-surfaced sheet material
Application Number
05/348,604
Publication Number
3857731
Application Date
April 6, 1973
Publication Date
December 31, 1974
Inventor
Courtney Henry R
Merrill Jr Roger F
Agent
Alexander Sell Steldt & DeLaHunt
Assignee
Minnesota Mining and Manufacturing Company
IPC
A61l 15/06
C09J 07/02
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