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Select books and magazinesHot melt adhesive granulesI often see a parameter:Open timeIt refers to the time window during which the adhesive can be pressed and bonded onto the spine of a book before losing its stickiness. The window is too short, and if the high-speed line cannot be pressed together in time, the “surface crust” will not stick firmly; If it is too long, the rhythm will slow down and it is easy to draw.
| Gel temperature | Opening hours | performance |
|---|---|---|
| low | Longer but with poor flow | Easy to empty adhesive |
| Recommendation | Normal Window | Adhesive stability |
| relatively high | shorten | Easy to surface crust and false adhesion |
Q: The longer the opening time, the better?
Answer: No, it’s too long and slows down the rhythm, making it easy to draw.
Question: How to choose a suitable window?
Answer: According to the model speed and book type, Sunlife hot melt adhesive process card has recommended values.
Q: Can the opening hours be adjusted on-site?
Answer: It mainly depends on selecting the model, with only minor adjustments to the temperature.
If you can’t understand the parameters, look for Guangzhou Sunlife Trading. Sunlife Hot Melt Adhesive provides a matching plan for opening time according to the model.
The business trend of the printing industry this year is based on the observed data from the National Bureau of Statistics on large-scale enterprises (with an annual operating income of over 20 million yuan). There are nearly 7,000 large-scale enterprises in the printing industry. Compared with the 100,000 enterprises in the entire industry, their revenue […]
What is the difference between cold glue type and fast curing type? Book and magazine adhesive packaginghot melt adhesive pelletsThere are two major camps based on curing speed: cold glue type (opening time 12-20 seconds, slow curing) and fast curing type (opening time 4-8 seconds, fast curing). Which one to choose does not depend on […]
Direct conclusion: EVA hot melt adhesive particles have fast curing, high initial adhesion, and affordable price, making them the main force for book binding and carton sealing; APAO hot melt adhesive particles have a long opening time, wide temperature resistance range, and good flexibility, making them more suitable for large-area composite and weather resistant applications. […]
Conclusion first:cannot replaceUsed for edge sealing of panel furnitureHot melt adhesive granulesIt is designed for “high temperature, thick adhesive layer, metal and edge banding bonding”, and book binding requires “low temperature fast penetration, thin adhesive layer, and paper fiber locking”. The most typical consequence of using edge banding glue to fix the book is that […]
