Claims
- 1. Method for preparing a pressure-sensitive adhesive tape comprising a backing bearing on at least one major surface thereof a layer of a fibrillated, polymeric film, said film layer bearing a layer of pressure-sensitive adhesive on the major surface thereof not facing said backing, said method comprising the steps of:
- (a) providing a backing bearing a layer of a first adhesive on at least one major surface thereof,
- (b) providing a layer of fibrillated, polymeric film, said film being oriented in the machine direction,
- (c) adhering said layer of fibrillated, oriented polymeric film to said backing by means of said layer of first adhesive, and
- (d) applying a layer of pressure-sensitive adhesive over the major surface of said layer of fibrillated, oriented polymeric film not facing said backing.
- 2. The method of claim 1 wherein said fibrillated polymeric film has been oriented prior to being fibrillated.
- 3. The method of claim 2 wherein said fibrillated polymeric film has been extruded prior to being oriented and fibrillated.
- 4. The method of claim 1 wherein said layer of pressure-sensitive adhesive is applied by means of an extrusion coating process.
Parent Case Info
This is a division of application Ser. No. 228,391, filed Aug. 4, 1988, now U.S. Pat. No. 4,973,517.
US Referenced Citations (17)
Non-Patent Literature Citations (1)
Entry |
Reichstadter and Sevick, Production and Application of Polypropylene Textiles, Elsevier Scientific Publishing Company (Amsterdam 1983), pp. 222-223. |
Divisions (1)
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Number |
Date |
Country |
Parent |
228391 |
Aug 1988 |
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