GB/T 25431.1-2025 Extruders and extrusion lines of rubber and plastics—Part 1:Safety requirements for extruders

Scope

This document specifies the safety requirements for the design and manufacture of all types of rubber and plastic screw extruders.
This document applies to all major hazards, dangerous conditions, and dangerous events related to extruders that may arise during the entire life cycle of the extruder (see GB/T 15706—2012, Section 5.4), during its intended use, and in the case of reasonably foreseeable misuse by the manufacturer (see Appendix A).
This document also covers the following feeding systems:
——Hoppers;
——Single-roll feeding systems;
——Double-roll feeding systems;
——Purging feeding systems.
And the following auxiliary equipment:
——Mesh-changing devices;
——Melt gear pumps;
——Melt pipelines and melt connectors;
——Static mixers;
——Exhaust systems;
——Extruder heads.
This document does not include:
——Hazards that may lead to explosions during material processing;
——Requirements for equipment and protection systems used in potentially explosive environments;
——Design requirements for exhaust ventilation systems.

Development Information

Same series standard

Replace the following standards

Related Standards