EN ISO 294-1:2017 PDF

Overview

EN ISO 294-1:2017 - Plastics: Injection moulding of test specimens of thermoplastic materials - Part 1: General principles, and moulding of multipurpose and bar test specimens (ISO 294-1:2017) is a CEN-endorsed standard that defines the general principles and mould designs for preparing reproducible injection-moulded test specimens. It specifies mould designs for type A1 and type B1 specimens (as per ISO 20753) and establishes a consistent framework for recording and reporting moulding conditions to obtain comparable reference data across laboratories and manufacturers.

Key Topics

• Mould design and types: Guidance for ISO multi‑cavity and single‑cavity moulds and interchangeable cavity plates to support reproducible specimen production.
• Main process parameters: Definitions and conventions for mould temperature, melt temperature, melt pressure, hold pressure, moulding cycle and cycle time-ensuring consistent terminology when reporting results.
• Equipment and apparatus: Requirements for injection‑moulding machines, recommended measurement points (thermometers, melt temperature measurement), screw and clamping considerations, and moulding volume.
• Procedure and conditioning: Principles for conditioning feedstock, injection‑moulding steps, measurement of temperatures/pressures, and post‑moulding treatment of specimens.
• Annexes for practical setup: Informative annexes provide runner configurations, standardized mould components, an example mould layout, methods for setting machine parameters (Annex D) and methods to determine hold pressure and hold time (Annex E).
• Reproducibility emphasis: Notes from interlaboratory tests (e.g., ABS, SB, PMMA) underline that mould design and controlled parameters are critical for reproducible test specimens.

Applications

• Quality control and materials testing labs producing reference specimens for mechanical, thermal or impact testing.
• Polymer manufacturers and compounders validating batch properties under standardized moulding conditions.
• Injection‑moulding equipment manufacturers and toolmakers designing test‑specimen moulds compliant with ISO 294‑1.
• R&D and interlaboratory studies where consistent specimen preparation is essential for comparable data. Using EN ISO 294‑1:2017 helps minimize variability caused by processing and mould-related factors, improving the reliability of property data for thermoplastic materials.

Related Standards

• ISO 20753 - Test specimens (refers to specimen types A1 and B1)
• ISO 294 series (Parts 2–4) - Additional specimen geometries and shrinkage determination
• ISO 179‑1 - Charpy impact property testing (referenced for specimen preparation)

Adopting EN ISO 294‑1:2017 ensures standardized terminology, repeatable injection‑moulding practices, and clearer reporting-essential for comparable thermoplastic materials testing and certification.