Method of increasing dimensional stability of a mat

Details Method of increasing dimensional stability of a mat Method of increasing dimensional stability of a mat

2008-01-22

2008-01-22

Lee, Edmund H. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Coating or impregnating workpiece before molding or shaping...

C264S175000, C264S257000, C264S293000

Reexamination Certificate

active

07320767

ABSTRACT:
A dimensionally more stable mat is made from a less dimensionally stable mat by saturating the mat with a binder and passing and compressing the mat between a pair of squeeze rolls to remove binder from the mat. At least one of the rolls has a series of annular grooves therein spaced apart along the length of the roll and across the width of the mat whereby as the mat is passed between the rolls a first and a second series of longitudinally extending bands are formed in the mat having different average binder concentrations. The second series of bands, formed in the mat at the annular grooves of the roll, has an average binder concentration greater than that of the first series of bands.

REFERENCES:
patent: 3071180 (1963-01-01), Finger et al.
patent: 6-346360 (1994-12-01), None
patent: 2001-314714 (2001-11-01), None

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