Comparison and evaluation of bookmark ribbon pasting hot melt adhesive particles: three schemes, measured data and recommendations

Why does bookmark ribbon pasting require high adhesive particles?

The ribbon bookmark of hardcover books is usually 3-5mm wide and pasted on the top inner side of the spine, with a small area and concentrated force. Ribbon materials are mostly polyester or nylon fabrics, with a smooth and flexible surface, and the adhesive layer must meet the following requirements: ① strong adhesion to the fabric; ② The adhesive layer is thin and does not damage the spine of the book; ③ Long term flipping without detachment.

Comparison of three tested schemes

Selection recommendation

Recommended PA polyamide for large-scale hardcover book linesHot melt adhesive granules——The adhesive strength is the strongest, the adhesive layer is the thinnest, and the durability is the best. Although the unit price is high, the amount used is very small (only about 0.1g per book), and the total cost is almost negligible. Modified EVA is available for small and medium-sized batches or handmade fine decoration, providing better cost-effectiveness. Both models of Sunlife hot melt adhesive are in stock, and Guangzhou Sunlife Trading supports small batch mixed batch procurement.

Frequently Asked Questions

• Q: How to solve the problem of uneven length of the ribbon sticking to the spine of the book?
  A: Before pasting, use a positioning fixture to fix the position of the ribbon, and press it into place within 2 seconds after applying glue to prevent the ribbon from sliding.
• Q: Does the high melting point of PA adhesive particles affect other adhesive layers on the spine?
  A: The coating temperature of PA adhesive particles is about 180 ° C, and the action time is extremely short (1-2 seconds), which will not affect the cured EVA backing layer.