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The cover of the express envelope is self-adhesive, and it is recommended to use one that has fast initial adhesion, good adhesion to PE and paperHot melt adhesive granulesApply a strip-shaped adhesive line, and the sealing can be controlled by sticking or tearing. The key lies in the opening time and the balance of adhesion.
Sunlifehot melt adhesiveThere are special granules for envelope sealing, and Guangzhou Sunlife Trading can match the glue according to the sealing machine speed to reduce leakage and overflow.
Q: Why are some envelopes not sealed securely?It is often due to insufficient adhesive or low temperature, resulting in insufficient initial adhesion.
Q: Can I tear off the sticker repeatedly?The disposable sealing design is not recommended to be repeated. If it needs to be removable, a removable formula should be selected.
Q: How can the glue line be laid more efficiently?Apply with fine toothed rollers, which not only saves glue but also ensures uniformity.
The common problem is that the film cover cannot stick to the book cover After the surface of the hardcover book cover (waist cover/outer cover) is coated with film, the surface energy of the film layer is extremely low,hot melt adhesive pelletsDifficult to wet and penetrate, resulting in weak adhesion between the protective cover and […]
Lock wire glue=use glue casually? wrong! Many printing factories believe that books have already been sewn in,hot melt adhesive pelletsJust an auxiliary, just use cheap glue casually. This idea is completely wrong. The requirements for glue in the double process of wire locking and glue installation are actually more special. Please avoid the following three […]
The root cause of difficulty in sticking PET plastic film PET (polyethylene terephthalate) plastic film has low surface energy and high crystallinity, and is widely recognized as a difficult to stick material. Ordinary EVAhot melt adhesive pelletsThe problem of initially sticking PET but suddenly decreasing peel strength after cooling is often encountered, and the fundamental […]
Products that have been designed, perfected, manufactured, and inspected to ensure compliance with the highest standards. It’s time for packaging now. The last thing we want is a fragile container that will burst under harsh conditions such as storage, transportation, or shelving. After all, packaging is usually the first impression of a product on potential […]
