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The common quality problems of wireless binding hot melt adhesive mainly include page dropping, uneven back, broken book core, bubbles, and perforation at both ends of the book. They often appear on single or multiple banks, mainly due to the following reasons:
1、 Analysis of Page Dropping Reasons
2、 Analysis of the reasons for incomplete books
Hot melt adhesive pelletsThe material is essentiallyComposite solid adhesive with thermoplastic resin as the skeletonThe main body is a base resin (EVA, APAO or PUR prepolymer), combined with thickening resin, wax and antioxidant. Different base resins determine whether it can be used to glue books and magazines, and whether it can be used to seal […]
Both new and existing users of hot melt packaging adhesive need to consider many factors when solving problems on the production line. The problem usually occurs in one of the following three aspects: equipment, adhesive, or environment. Any one or combination of these three variables could be the root cause of the problem. Some common […]
The core of Guangzhou flatbed hot melt adhesive isMoisture and heat resistance, good leveling, strong initial adhesion, and adaptable opening timePriority selectionModified EVA (mass production) or PUR (high-end)Accurately match according to the substrate, equipment, and season, avoiding “soft in summer and brittle in winter, opening glue in the south”. 1、 Guangzhou climate pain points (key […]
What hot melt adhesive is used for book binding? Nowadays, EVA type hot melt adhesive is commonly used to stick the side of books, and PUR type hot melt adhesive is also available, but the cost of using PUR type hot melt adhesive will be slightly higher. The process of gluing the spine is as […]
