초록 ▼

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 com

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.

대표청구항

[ I claim:] [1.] A nonwoven fibrous mat comprising fibers bound together with a mixture containing a cross linked vinyl chloride acrylate copolymer having a glass transition temperature as high as about 113 degrees F.

[ I claim:] [1.] A nonwoven fibrous mat comprising fibers bound together with a mixture containing a cross linked vinyl chloride acrylate copolymer having a glass transition temperature as high as about 113 degrees F.