TS 1699

TS 1699 is a terminology standard that defines the terms used for glass-fibre products intended to reinforce plastics. It establishes a common technical vocabulary for products made from chopped or continuous glass fibres, helping engineers, manufacturers, and purchasers refer to the same reinforcement concepts with the same meaning.

Why glass-fibre reinforcement needs its own terminology

In general technical use, glass fibres are added to a plastic matrix to improve strength, stiffness, and dimensional stability. Chopped fibres are often associated with easier processing and complex-shaped parts, while continuous fibres are used where directional reinforcement and higher structural performance are important. Distinguishing these forms matters because they behave differently in manufacture and in service.

According to the scope, this standard covers the definitions of terms for glass-fibre products used to reinforce plastics, and it excludes glass-fibre products used for thermal or acoustic insulation. That boundary helps separate reinforcement materials from insulation materials, which may look similar but serve different technical purposes.

• The subject is the naming and definition of glass-fibre reinforcement products.
• It includes chopped and continuous glass fibres used in plastic composites.
• It excludes glass-fibre products intended for heat or sound insulation.
• It is a terminology standard, not a product specification or performance standard.