Process and apparatus for the relaxation of interlayer sheet

Details Process and apparatus for the relaxation of interlayer sheet Process and apparatus for the relaxation of interlayer sheet

2005-04-19

2005-04-19

Tentoni, Leo B. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

C226S007000, C226S097300, C264S3420RE, C264S555000, C425S135000, C425S445000

Reexamination Certificate

active

06881362

ABSTRACT:
A process for relaxation of interlayer sheet is provided which comprises heating the interlayer sheet, followed by leading the heated interlayer sheet over an air-cushion table with regulation of the tension on the interlayer sheet to induce interlayer sheet relaxation and thereafter cooling the relaxed interlayer sheet to the desired temperature for subsequent use. Apparatus suitable for carrying out the process of interlayer sheet relaxation comprising a heating section, an air-cushion table, a tension control and a cooling section is also provided in accordance with the present invention.

REFERENCES:
patent: 3632726 (1972-01-01), Knoxs et al.
patent: 3800438 (1974-04-01), Meier
patent: 4329315 (1982-05-01), Brower et al.
patent: 4437619 (1984-03-01), Cary et al.
patent: 4954306 (1990-09-01), Jamet
patent: 5290504 (1994-03-01), Milkovich et al.
patent: 0685316 (1995-12-01), None
patent: 2272917 (1975-12-01), None
patent: 02022038 (1990-01-01), None

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