Method of producing a lamellar polymeric body
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United States of America Patent
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May 31, 1994
Issued Date -
N/A
app pub date -
Jan 19, 1993
filing date -
Jan 22, 1991
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Abstract
A method for the production of a lamellar reflective polymeric body is provided and includes the steps of providing a first stream of a first heat plastified polymeric material and a second stream of a second heat plastified polymeric material, and encapsulating discrete portions of the first polymeric material in the second polymeric material by coextruding the polymeric materials to form a plurality of ribbon-like layers of the first polymeric material within a matrix of the second polymeric material to form the reflective polymeric body. The layers of the first polymeric material are arranged to have their major interfaces aligned substantially parallel to the major surfaces of the body such that at least 30% of light incident on the body is reflected. The ribbon-like layers may be further divided into a series of platelet-like layers to produce layers which are discontinuous in all major planar dimensions by passing the ribbon-like layers through a reciprocating feed plate or valve.
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Patent Owner(s)
| Patent Owner | Address | |
|---|---|---|
| 3M INNOVATIVE PROPERTIES COMPANY | P O BOX 33427 ST PAUL MN 55133-3427 |
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Inventor(s)
| Inventor Name | Address | # of filed Patents | Total Citations |
|---|---|---|---|
| Schrenk, Walter J | Midland, MI | 32 | 5010 |
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| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
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