Cleanroom Production and Dust Control in Molded Pulp: The Hidden Bar for Food and Medical Use

When molded pulp enters food, medical, and electronics applications, cleanliness is a hard gate. Dust and foreign-matter control across pulping, forming, hot-pressing, and packing directly determines whether a product passes factory audits and quality review.

The Scenario: Three challenges in cleanliness control

Molded-pulp workshop cleanliness control has three challenges:

Pain Points

• Pulping and refining generate fiber dust and pulp stains that contaminate semi-finished goods;
• Hot-pressing and trimming create flash and chips that get into finished products, hurting appearance and hygiene;
• Crossing personnel and material flow lines bring in outside dust and microbial contamination.

The Solution: Three cleanliness-control measures

Molded-pulp clean production uses three measures:

1. Zoned cleanliness and positive pressure Separate pulping, forming, and finishing into graded zones, with positive pressure and filtered air supply in critical areas.

2. Closed-loop dust collection Negative-pressure dust extraction and scrap collection at trimming and hot-pressing to prevent re-contamination.

3. Personnel and material control Gowning and air showers, material de-packaging and cleaning, and one-way flow to stop cross-contamination.

The Result: Passes audits, stable quality

With cleanliness control in place, products pass food and medical customer audits, foreign-matter complaints drop, and high-end order capacity grows.