Method for stretching polymer film and device for recovering slit film edge
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United States of America Patent
Stats
-
Jan 4, 2011
Grant Date -
Oct 2, 2008
app pub date -
Mar 28, 2008
filing date -
Mar 28, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A rear end portion of a leading TAC film and a front end portion of a following TAC film are connected using a double-sided adhesive tape and a single-sided adhesive tape. A laser welding device emits a welding laser beam along a welding line onto the films. Owing to the welding laser beam, the leading and following TAC films are welded along the welding line. The laser welding device emits a cutout laser beam along a cutout line onto the films. Owing to the cutout laser beam, a part of the leading and following TAC films surrounded by the cutout line is cut out. The cut out part has the single-sided adhesive tape attached. Since the tape cannot be recycled, the cut out part is absorbed by an absorbing device and disposed.
First Claim
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International Classification(s)
- D01D:MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE....
- C09J:ADHESIVES; ADHESIVE PROCESSES IN GENERAL
- B05D:PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MAT....
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- A61F:FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES....
- B28B:SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG O....
- D06C:FINISHING, DRESSING, TENTERING, OR STRETCHING TEXT....
- D02J:FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS....
- B21F:WORKING OR PROCESSING OF WIRE
- D06M:TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D0....
- D01F:CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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