Claims
- 1. A release carrier comprising a dimensionally stable backing and a crystallizable polymer layer overlying said backing, said polymer layer having an exposed surface, said exposed surface including a first surface area having a first gloss level and a second surface area having a second gloss level less than the gloss level of said first area, said exposed surface further having spherulite formations, wherein said spherulite formations substantially determine said first and second gloss levels, and wherein the first and second areas form a non-random pattern.
- 2. The release carrier of claim 1, wherein the first surface area has a high gloss and the second surface area has a matted gloss.
- 3. The release carrier of claim 1, wherein the spherulite formation of the first surface area comprises mostly non-impinging spherulites.
- 4. The release carrier of claim 3, wherein the spherulite formation of the second surface area comprises mostly impinging spherulites.
- 5. The release carrier of claim 1, wherein the crystallizable polymer is a polyolefin.
- 6. The release carrier of claim 5, wherein the polyolefin is polyethylene or polypropylene.
- 7. The release carrier of claim 1, wherein the polymer layer is not in a cold worked condition.
- 8. The release carrier of claim 1, wherein the exposed surface is substantially free of fibroids.
- 9. The release carrier of claim 1, wherein the first and second areas form a repeating pattern.
CROSS-REFERENCE TO RELATED APPLICATION
This is a division of application Ser. No. 362,306, filed Jun. 6, 1989 now Pat. No. 5,080,954, issued Jun. 14, 1992.
US Referenced Citations (17)
Foreign Referenced Citations (4)
Number |
Date |
Country |
687545 |
May 1964 |
CAX |
0006435 |
Jan 1985 |
JPX |
2080024 |
Apr 1987 |
JPX |
7706963 |
Dec 1978 |
NLX |
Divisions (1)
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Number |
Date |
Country |
Parent |
362306 |
Jun 1989 |
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