Fiberglass Chopped Strand Mat is an non-woven E- or C-glass fiberglass fabric manufactured by spreading continuous filament rovings of 50mm in length randomly and uniformly in combination with polyester binder in power form (or other binder in emulsion form).
Chopped Strand Mat (CSM) is a random fiber mat that provides equal strength in all directions and is used in a variety of hand lay-up and open-mold applications. Chopped strand mat is produced by chopping continuous strand roving into short 1.5 to 3 inch lengths and dispersing the cut fibers randomly over a moving belt to from a "sheet" of random fiber mat. A binder is applied to hold the fibers together and the mat is trimmed and rolled. Because of is random fiber orientation, chopped strand mat conforms easily to complex shapes when wet-out with polyester or vinyl ester resins. Chopped strand mats are available as a roll stock product produced in a variety of weights and widths to suite specific applications.
Mat Production Process
Assembled rovings are chopped to a specified length, and then fall onto a conveyor randomly. The chopped strands are bonded together by either an emulsion binder or a powder binder. After drying, cooling and winding, a chopped strand mat is formed.
Emulsion Chopped Strand Mats
Emulsion Chopped Strand Mats are made of randomly distributed chopped strands held together by an emulsion binder. They are compatible with UP and VE resins. The roll width ranges from 200mm to 3,120mm. Special requirements may be available upon request.
Powder Chopped Strand Mats
Powder Chopped Strand Mats are made of randomly distributed chopped strands held together by a powder binder. They are compatible with UP, VE, EP and PF resins. The roll width ranges from 200mm to 3,120mm. Additional demands on wet-out and decomposition time can be available upon request.
Excellent weight uniformity
Fast wet out
Easy air release
Excellent transparency of finished products
Excellent laminate clarity
Low resin consumption
Each Chopped Strand Mat is wound onto a paper tube which has an inside diameter of 76mm and the mat roll has a diameter of 275mm. The mat roll is wrapped up with plastic film，and then packed in a cardboard box or wrapped up with kraft paper. The rolls can be vertically or horizontally placed. For transportation, the rolls can be loaded into a cantainer directly or on pallets.
Unless otherwise specified, Chopped Strand Mat should be stored in a dry, cool and rain-proof area. It is recommended that the room temperature and humidity should be always maintained at 15℃～35℃ and 35%～65% respectively.