How to calculate the amount of hot melt adhesive particles used for book binding? Don’t beat your head and estimate anymore

Book bindingHot melt adhesive granulesHow to calculate the dosage?

Many book and magazine factories purchase hot melt adhesive granules based on “feeling”, resulting in either material shortage, production stoppage, or stockpiling and occupying warehouses. In fact, the dosage can be calculated very accurately: the glue consumption per book ≈ the spine coating area x the glue layer thickness x the glue density. Taking an A5 book with a spine width of 2cm, a coating height of 2cm, and a glue thickness of 0.3mm as an example, a single book weighs about 0.12 grams, and 10000 books weigh 1.2 kilograms.

Three common misconceptions

• Misconception 1: The thicker the glue is applied, the firmer it becomesThick glue is prone to brittle cracking and oil leakage, so choose the appropriate glue thickness according to the book core thickness.
• Misconception 2: Use the same amount for all booksCopperplate paper and thin dictionary paper have different penetration rates, and there is a significant difference in actual adhesive consumption, which needs to be counted by category.
• Misconception 3: Only looking at unit price without considering lossesCheap particles have poor flowability and excessive glue overflow, and the unit cost may not necessarily be low.

The steps to accurately calculate the dosage

Frequently Asked Questions (FAQ)

Q: How much does one Sunlife hot melt adhesive weigh?
Answer: The standard weight is 25kg per pack. Based on the consumption of glue per book, the starting point is about half a pack of 10000 A5 books, depending on the paper type.

Question: Does overflow glue count as loss?
Answer: Calculate. Excessive glue overflow indicates incorrect coating parameters or glue type, and adjusting the machine is more cost-effective than buying more glue.

Q: How to estimate small batch trial orders?
Answer: First, use the machine scale difference method to measure dozens of books and take the average, then enlarge it, and the error is very small.

Guangzhou Sunlife Trading can help calculate the recommended purchase quantity of Sunlife hot melt adhesive according to your book type to avoid material breakage or warehouse pressure.