Sheet reinforcement
This is a typical reason for selecting suitable grades. Check the manufacturer’s data sheet for the actual formulation and service conditions.
FIBRES
CSM(Chopped strand mat (glass fibre))
A sheet made from short glass strands held together, used to reinforce suitable resin systems.
Reinforcing fibre
THE NAME, EXPLAINED
What is CSM?
CSM means Chopped strand mat (glass fibre).
A sheet made from short glass strands held together, used to reinforce suitable resin systems.
Worth knowing
The binder and resin compatibility matter. Unused mat is very different from a finished, cured glass-reinforced laminate.
WHY MANUFACTURERS CHOOSE IT01 02 03
Properties with a practical purpose.
Random strand orientation
This is a typical reason for selecting suitable grades. Check the manufacturer’s data sheet for the actual formulation and service conditions.
Binder-dependent compatibility
This is a typical reason for selecting suitable grades. Check the manufacturer’s data sheet for the actual formulation and service conditions.
Properties vary with formulation, reinforcement, moisture, processing and service conditions. Use the exact grade data sheet for engineering decisions.
THE NEXT-CYCLE QUESTION
What matters when considering recovery?
Fibre, thermoplastic composite and cured composite are different streams. Confirm the fibre format and surrounding resin.
The binder and resin compatibility matter. Unused mat is very different from a finished, cured glass-reinforced laminate.
Poly-Cycle can discuss your material information and collection requirements. Inclusion in this guide does not confirm acceptance, a particular recycling method or that every operation takes place at a Poly-Cycle facility.
How assessment and collection workMake the enquiry easier
- Confirm the identity. Keep the manufacturer, trade grade and polymer marking. For an additive or chemical, include the safety data sheet.
- Describe the batch. Give the weight, colour and form: pellets, parts, sheet, film, fibre or another format.
- Explain what else is present. Declare fillers, coatings, metal inserts, other polymers and previous contact with chemicals or other contaminants.
- Agree the route. Share photographs and your collection postcode before arranging a movement.
FROM THE GUIDE TO YOUR MATERIAL
Have CSM to discuss?
Send the team your grade details, approximate quantity and photographs. We can discuss the information needed for your particular batch.
KEEP EXPLORING
Browse Fibres Related material guides.
Glass fibre
Glass filaments for reinforcement
Very fine strands of glass that can be supplied as yarns, rovings, mats or chopped fibres.
Understand this material Multi-end assembled rovingsBundled continuous glass-fibre strands
Several glass-fibre strands brought together into a larger roving package for composite processing.
Understand this material Glass-fibre direct rovingsContinuous single-end glass-fibre reinforcement
A continuous roving wound into a package and used to make reinforcing fabrics or structural composite shapes.
Understand this materialTechnical references and reading
General material information reviewed 1 November 2026. Manufacturer information supports the material descriptions; recycling enquiry guidance is an editorial synthesis, not a statement of a supplier’s or Poly-Cycle’s acceptance criteria.
Browse this guide under: Fibres. The original category inventory was informed by RM Group’s plastics directory; explanations have been written for Poly-Cycle.