Hot melt adhesive particle book binding equipment glue replacement and cleaning process: comparison and evaluation of two solutions

When using hot melt adhesive granules for book binding equipment, there are two options to compare: “replace adhesive after quick emptying” and “replace adhesive after thorough cleaning”. The former saves downtime, while the latter can reduce the impact of coking materials, foreign objects, and old rubber on the performance of new rubber. Sunlife hot melt adhesive recommends selecting based on product differences, equipment residue, and order requirements.

Comparison of Two Rubber Replacement Plans

• Quick emptying: Drain the old glue from the glue tank and pipeline, add a small amount of new glue to circulate and remove any residue, suitable for frequent replacement of orders with verified compatibility.
• The risk of rapid emptying is that the transition period of mixed glue is relatively long. If the old glue has carbonized, the nozzle and scraper plate problems may continue to exist.
• Dismantling and cleaning: Clean the glue tank, glue wheel, pipeline, and nozzle according to the equipment instructions, and then use new glue to circulate and empty.
• The advantage of dismantling and cleaning is that the parameters are more stable after changing the adhesive, making it suitable for orders with different colors, viscosities, or high quality requirements.
• Regardless of the method used, it is important to avoid mixing different brands of granules without verification.

Applicable Scenarios

Guangzhou Sunlife suggests recording the type of old adhesive, equipment structure, and residual adhesive performance first. Similar products and frequent order changes can be prioritized for rapid verification and emptying; When there are particles, blockages, color pollution, viscosity fluctuations, or significant product differences, thorough cleaning should be arranged and operated by trained personnel.

Verification after changing the adhesive

After adding new glue, it is necessary to check the melting state, glue supply stability, wire drawing, glue uniformity, and finished product strength, rather than just checking whether the glue tank has been changed to a new color. Safe cooling, heat-resistant protection, and cleaning according to equipment instructions are equally important.

FAQ

Q: Can different brands of rubber granules be directly mixed?Answer: Not recommended, at least compatibility and device temperature window should be verified first.

Q: When must it be thoroughly cleaned?Answer: When there are burnt particles, blockages, color pollution, viscosity fluctuations, or significant product differences.

Q: Can Sunlife hot melt adhesive provide advice on changing adhesive?Answer: Verification ideas can be provided based on equipment structure, old adhesive type, and new adhesive samples.