Experience in continuous production of adhesive packaging for long editions of books and magazines without changing adhesive: practical selection of hot melt adhesive particles for 200000 textbooks

Customer background and challenges

A textbook printing factory in Hunan has taken on an order for 200000 teaching aids with adhesive packaging, with a delivery time of only 15 days. The adhesive packaging line needs to work continuously in three shifts without stopping. Previously used a certain brandHot melt adhesive granulesAfter 8 hours of continuous operation, the glue pot began to smoke and coke, and the bonding strength dropped sharply. It was forced to shut down and clean once every shift, seriously affecting production capacity and delivery time.

Improvement after changing the adhesive

Recommended by peers to try Sunlife Hot Melt Adhesive Long Edition Special Model, this model uses high-purity EVA substrate and high-temperature resistant thickening system, with significantly better thermal stability than ordinary models:

• Continuous startup for 24 hours without smoking or coking
• After 8 hours, the adhesive strength will decrease by less than 3% (the original adhesive will decrease by 15%)
• Continuous operation of three shifts throughout the day without stopping to wash the pot, increasing production capacity by 18%
• Cleaning the glue pot once every six months can significantly reduce maintenance costs

Summary of Selection Points

The core of long-term continuous production is thermal stability – the rubber particles stay in the glue pot at high temperature for a long time without decomposition or carbonization. When selecting, pay attention to the difference between the softening point and the thermal weight loss temperature. The larger the difference, the more sufficient the heat tolerance. Guangzhou Sunlife Trading provides free adhesive testing services for long version specialized models. It is recommended to conduct 8-hour continuous operation testing before bulk procurement.

Frequently Asked Questions

• Q: Should we replace the adhesive in half for long production?
  A: If the color of the glue starts to darken, you can add new glue while removing the old glue at the feeding port, achieving gradual glue replacement without stopping the machine, without clearing the glue pot.
• Q: How to keep warm during a brief shutdown in continuous production?
  A: The insulation temperature is set at 120-130 ° C to maintain the fluidity of the adhesive and avoid high-temperature aging. Heat up to working temperature for 5 minutes before resuming production.