Shenzhen Alu Rapid Prototype Precision Co., Ltd.

Plastic molding, particularly processes like injection molding, extrusion, and blow molding, can indeed pose toxicity risks, primarily to workers involved in the manufacturing process. These risks stem from the heating, melting, and shaping of plastic resins, which release hazardous fumes, volatile organic compounds (VOCs), gases, particles, and other emissions. While the final molded plastic products are often safe for consumer use (especially if made from food-grade materials), the production environment requires strict safety measures to protect against health effects.

Key Hazards and Health Effects

The toxicity arises from thermal degradation of common plastics like PVC, ABS, polypropylene, polystyrene, and polyethylene, which emit irritants, carcinogens, and neurotoxins during operations such as resin melting, injection into molds, and part ejection. Inhalation is the primary exposure route, affecting the respiratory system, eyes, skin, and potentially other organs with both acute (immediate irritation) and chronic (long-term disease) impacts.

Here's a summary of toxic constituents from common plastics used in molding, their exposure limits, and associated health effects:

Additional risks include:

1.Airborne dust and microplastics: Generated during grinding, sanding, or reprocessing of molded parts, these fine particles can inflame lung tissue, exacerbate asthma, and contribute to fibrosis or chronic pulmonary diseases over time.

2.PFAS ("forever chemicals"): Used in mold release agents and coatings to aid part ejection, these persistent compounds bioaccumulate and are linked to developmental/reproductive issues, certain cancers, and environmental contamination.

3.Other concerns: Workers may face elevated risks of Legionnaires' disease from water-based cooling systems in molds, as well as general chemical plant hazards like diesel exhaust from equipment.