Binding of millions of teaching aids for the new semester: a case study of a printing factory’s supply of hot melt adhesive granules

First of all, let’s talk about the results: a textbook printing factory in South China needs to complete wireless binding of about 1.2 million teaching aids 45 days before the start of the school season. After switching to Sunlife hot melt adhesive for books and magazines and locking in the batch supply plan, the production line continues to operate at full capacity, with a page drop rate controlled below 0.3%, and delivered on schedule.

Project Background

This printing factory has a peak production of teaching aids in July and August every year, with three high-speed glue binding lines operating in two shifts. In previous years, there were two pain points: one was the tight supply of rubber granules during peak seasons, with temporary restocking waiting for a week and production lines having to stop waiting; The second issue is the fluctuation of glue temperature on the high-speed line, causing some batches of book backs to become brittle, and there have been feedback of page drops since the start of the school year.

Solution

• SelectionSwitching to EVA adhesive particles specifically designed for high-speed adhesive binding lines, with stable viscosity and a stable adhesive line state between 165-175 ℃;
• supplyGuangzhou Sunlife Trading has made a lock quantity supply plan for 6 batches according to the production schedule, with one batch delivered to the factory every week and a weekly safety stock in the warehouse;
• On site debuggingWhen the first batch goes online, technicians stay on site for half a day to calibrate the temperature of the melt glue pot and the gap between the glue rollers on the three lines one by one.

delivery data

Frequently Asked Questions

Q: What are the special requirements for adhesive particles in teaching aids?
Teaching auxiliary paper is lightweight and frequently flipped, requiring good adhesive strength and resistance to repeated folding. Ordinary sealing rubber particles cannot replace book and magazine specific particles.

Q: How to ensure continuous supply during peak season?
Confirming the schedule one month in advance and signing a batch supply plan, the manufacturer prepares production according to the plan, which is much more secure than placing an order temporarily.

The experience of this case is simple: during peak season, it’s not just about the quality of rubber particles, but also about the coordination of supply rhythm and on-site debugging.