新闻中心
The material of the notebook case (PU or imitation leather) is different from that of the inner pages (cardboard), and the bonding should balance flexibility and strength. Soft glue is resistant to bending and hard glue is firmly attached. Choosing the wrong one can easily cause the glue to peel or the leather surface to become hard.
| Dimension | Soft rubber (EVA type) | Hard adhesive (polyolefin) |
|---|---|---|
| flexibility | Okay, it won’t crack when bent | General |
| bond strength | Middle | high |
| Applicable Part | Leather case bend | Internal page fixation |
Soft glue is used at the connection between the leather cover and the inner page, while hard glue is used between the inner page and the backing. The application of glue in different zones is the most stable. Sunlifehot melt adhesiveProvide two sets of software and hardwareHot melt adhesive granules， Guangzhou Sunlife Trading can provide a combination plan according to the notebook structure.
Q: Is it normal for leather cases to be stiff in winter?Low temperature hardening is normal, choosing low-temperature soft rubber can improve the hand feel.
Q: Will the glue seep into the leather surface?By controlling the coating amount and temperature, thin coating can avoid glue leakage.
Photo books (album books) often use thick copperplate paper and pearlescent paper, which have high weight, smooth surface, and high requirements for initial adhesion and flexibility of the adhesive. Direct conclusion: Prioritize the transparent high initial adhesion EVA system and select the softening point according to the thickness of the book core. Selection List Procurement […]
Sustainable hot melt adhesives for handbag manufacturing are increasingly needed by consumers and businesses for products that can meet environmental requirements while still achieving their core purposes. Handbags are no exception. Trends show a clear shift from plastic to paper, and some countries have completely banned the use of plastic bags. The < figure class="wp […]
Conclusion first: Exported books and periodicals need to be transported across the ocean, through high-temperature containers and temperature differences between high and low temperatures. Ordinary rubber particles are prone to sticking or becoming brittle during transportation, while weather resistant hot melt rubber particles have a higher softening point and a more balanced resistance to high […]
What are the benefits of using hot melt adhesive for packaging? When a business is just getting started, it needs a great deal of originality, courage and the ability to make full use of the things around it. When delivering products to customers, the issue of product packaging comes into play. However, once enterprises make […]
