Should environmental protection equipment be installed for VOC emissions in the hot melt adhesive particle workshop? A compliance checklist

Direct answer: In most cases, local ventilation is required. Whether to install treatment equipment depends on the emission level and local requirements

Hot melt adhesive granulesBelonging to solvent-free adhesives, VOC emissions at normal construction temperatures are much lower than solvent based adhesives, and large-scale treatment facilities such as RTO and activated carbon adsorption are usually not required. However, there will still be a small amount of thermal decomposition gas and oil fume at the glue application point. According to current workshop hygiene and sewage requirements, local exhaust should generally be installed; Whether to install terminal treatment should be based on the environmental impact assessment opinions and the emissions approved by the local ecological environment department.

Compliance Self Inspection Checklist

• Check the environmental impact assessment: whether the VOC emission outlet and treatment requirements have been clearly stated in the project’s environmental impact assessment or pollutant discharge registration;
• Calculation of usage: The annual glue usage and glue application temperature are the main criteria for determining the amount of glue used. First, make the ledger accurate;
• Check the site: whether there is a gas collection hood and local exhaust above the glue application point and glue tank;
• Request for information: Request MSDS and VOC/hazardous substance testing reports from the supplier as attachments to the declaration;
• Temperature control and over temperature prevention: The glue application temperature should not exceed the upper limit of the brand, and over temperature carbonization will significantly increase smoke and odor;
• Record keeping: Equipment cleaning, exhaust operation, and physical examination records should be kept for easy evidence during inspection.

Common practices in different situations

Reduce emissions from the material selection end

Choosing low odor and low VOC grades, and controlling the glue application temperature within the recommended range, is the most cost-effective way to reduce emissions. Sunlife’s low odor series of hot melt adhesive can provide third-party testing data and MSDS. Guangzhou Sunlife Trading can cooperate with the printing factory’s environmental impact assessment declaration to provide the required material list. Please refer to the requirements of the local ecological environment department for specific implementation guidelines.

Operation habits are more important than equipment

In the same workshop, different operating habits lead to significant differences in odor: glue temperature exceeding the upper limit, residual glue repeatedly returning to the furnace, and equipment not being cleaned for a long time. These three things are the most likely to use low odor materials to produce a burnt odor. Incorporating coke cleaning into weekly maintenance and temperature control into first piece inspection is often more effective and cost-effective than installing additional equipment.

Frequently Asked Questions

Q1: Is hot melt adhesive really more environmentally friendly than solvent adhesive?
Yes, without solvents or diluents, VOC emissions are significantly lower, but it does not mean zero emissions.

Q2: Is the burnt smell in the workshop exceeding the standard?
Mostly due to over temperature carbonization or equipment carbon deposition, first cool down and clean the coke, and then see if it needs to be tested.