What does the opening time of book and magazine adhesive packaging mean? A terminology guide

What does the opening time of book and magazine adhesive packaging mean?

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.

How does the opening time affect the production line

• high-speed lineTo have a longer opening time and leave room for compression.
• Thick book corePenetration is slow and requires a slightly longer window.
• Low temperature fast solidificationShort opening, fast curing, suitable for high-speed thin paper.

Relationship with temperature

Frequently Asked Questions (FAQ)

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.