A PVC powder manufacturer in Shaoxing, Zhejiang, has long faced issues of dust emissions and material loss during raw material transportation. Traditional mechanical conveying methods not only lead to harsh workshop environments but also cause several tons of hidden waste annually due to material spillage. To meet increasingly stringent environmental regulations and safety production requirements, the company urgently needed an efficient and clean powder conveying system.

Customer pain points

Before the renovation, PVC powder in the workshop was mainly handled manually and conveyed by open belts, which had the following core pain points:

• Severe dust pollution: During the transfer of powder, large amounts of dust are raised, causing PM2.5 levels in the working environment to exceed limits and posing high health risks to employees.
• High material loss rate: Open conveying causes powder to spill and become damp and clump, with a comprehensive loss rate of about 3%~5%.
• High dependence on labor: manual feeding, cleaning, and inspection require multiple people to work in shifts, resulting in high labor costs.
• Low degree of automation: Unable to coordinate with subsequent batching and mixing processes, limiting production efficiency.

Solutions and advantages

To address these pain points, Head Powder customized a sealed, dust-free pneumatic conveying system for this customer. The system uses the principle of negative pressure dilute phase conveying, transporting PVC powder directly from the storage area to the production station through sealed pipelines, with no dust and leakage throughout the process. Key advantages include:

• Sealed conveying: pipelines and valves are sealed to ensure zero powder dispersion, with workshop dust concentration below 1mg/m³.
• Low-loss operation: conveying efficiency exceeds 99.5%, with no mechanical damage or moisture intrusion of materials.
• Automated control: PLC operates fully automatically, supporting remote monitoring and capacity adjustment, reducing manual operation by 80%.
• Flexible expansion: Modules such as multi-branch configuration, automatic weighing, explosion-proof components, etc., can be configured according to production line requirements.

After the project was put into operation, the customer's workshop environment improved significantly, material loss dropped to within 0.3%, and annual comprehensive operating costs decreased by about 35%. This case provides a reliable reference for dust-free conveying in powder processing in the PVC industry.