Nonwoven glass fiber mat for facing gypsum board and method of m

Details Nonwoven glass fiber mat for facing gypsum board and method of m Nonwoven glass fiber mat for facing gypsum board and method of m

1997-01-09

1998-06-30

Bell, James J.

Paper making and fiber liberation

Processes and products

Plural fiber containing

162135, 162146, 162156, 1621681, 162184, 162186, 428440, 442180, D21H 1100

Patent

active

057728461

ABSTRACT:
A new thermoformable nonwoven fibrous mat having properties particularly suited for a facer on insulating gypsum board and the method of making the mat is disclosed. The mat can also be pleated or thermoformed to produce filter elements and preforms for producing a wide range of fiber reinforced composites and laminates. The mat preferably contains a major portion of glass fibers and a minor portion of polyester fibers bound together with up to 35 wt. percent of a cross linked vinyl chloride acrylate copolymer binder having a glass transition temperature as high as about 113 degrees F., preferably about 97 degrees F. The binder also optionally contains about 3-10 wt. percent stearylated melamine.

REFERENCES:
patent: 4112174 (1978-09-01), Hannej et al.
patent: 4647496 (1987-03-01), Lehnert et al.
patent: 5397631 (1995-03-01), Green et al.

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