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Direct answer: One kilogram of hot melt adhesive granules specifically designed for books and periodicals, estimated to be able to hold approximately 80-120 books in a common A4 booklet (about 150 pages, with a book back length of about 29.7 centimeters); There are more pocket books and thin books, up to 150 or more; Thick and large format books are as few as 50-70 copies. This range is affected by the length of the book back, the thickness of the glue layer, the temperature of the glue application, and equipment wear. Below, we will teach you how to calculate your own usage.
The adhesive consumption per book is approximately equal to the length of the book back multiplied by the width of the adhesive layer multiplied by the thickness of the adhesive layer multiplied by the density of the adhesive particles. The longer the book back, the thicker the glue layer, and the more glue is applied to a single book. The common adhesive layer thickness for wireless binding of books and periodicals is 0.6-1 millimeters, which is controlled within this range to ensure penetration and avoid waste. Guangzhou Sunlife Trading found that many graphic and text stores “use more glue based on feeling” when calculating, and the glue consumption per book is nearly 30% higher than the standard.
| Product Type | Single book approximately consumes glue | About one kilogram of binding |
|---|---|---|
| Pocket book/booklet (≤ 100 pages) | 6-8 grams | 120-150 books |
| A4 booklet (approximately 150 pages) | 8-12 grams | 80-120 books |
| Thick/Large format brochure | 14-20 grams | 50-70 books |
Q: Why is my actual usage much higher than the reference value?
Most likely, the glue layer is too thick or the glue pot is overheated, resulting in the loss of glue solution. First, adjust the amount of glue to the standard value and set the temperature according to the recommended range of glue particles. The amount usually decreases immediately.
Q: Will there be a significant difference in the number of bound books per kilogram of different adhesive particles?
meeting. The specialized granules for books and periodicals with high solid content and good toughness have moderate penetration and lower usage per book; Low price universal granules are often absorbed in large quantities by paper fibers, resulting in a lower unit price but higher overall cost. Sunlife hot melt adhesive can provide adhesive consumption calculation according to customer book specifications.
Summary: The most reliable way to know how many books can fit in one kilogram is to weigh and measure it yourself, and then calibrate it against a reference table, which is much more accurate than using someone else’s numbers.
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