Method of making double-sided pressure-sensitive adhesive tape

United States Patent im

Leonard et al.

US005589122A [li] Patent Number: [45] Date of Patent:

5,589,122 Dec. 31, 1996

[54] METHOD OF MAKING DOUBLE-SIDED PRESSURE-SENSITIVE ADHESIVE TAPE

[75] Inventors: William K. Leonard, Troy Township, Wis.; Kirit C. Mody, Shoreview; Richard J. Rolando, Oakdale, both of Minn.

[73] Assignee: Minnesota Mining And

Manufacturing Company, St. Paul,
Minn.

[21] Appl. No.: 412,758

[22] Filed: Mar. 29, 1995

Related U.S. Application Data

[60] Division of Ser. No. 166,549, Dec. 14, 1993, abandoned, which is a continuation-in-part of Ser. No. 769,548, Oct. 1, 1991, abandoned.

[51] Int. CI.6 B29C 47/06

[52] U.S. CI 264/146; 156/244.11; 156/244.25;

264/148; 264/171.13; 264/172.19; 264/172.17;

264/213; 264/236; 425/132

[58] Field of Search 264/146, 148,

264/171.13, 172.19, 173.17, 213, 338, 236, 347; 156/244.11, 243, 908, 244.25; 425/132

[56] References Cited

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Primary Examiner—Jeffery R. Thurlow

Attorney, Agent, or Firm—Gary L. Griswold; Walter N.

Kirn; James V. Lilly

10

Page 2

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