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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 adhesive field is extremely extensive, and its core characteristic is the ability to achieve adhesive function through various mechanisms such as mechanical anchoring and adsorption. Therefore, any substance with such ability can be considered as an adhesive for use. Numerous adhesives have demonstrated cross material bonding capabilities, such as rubber adhesives that can connect […]
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 (1) The milling groove is too shallow […]
EVA hot melt adhesive is cheap and widely used in the industrial industry – but which commercial products are commonly made with hot melt adhesive? The following are the six most common applications in the manufacturing industry: 1） Quick assembly, recyclable cardboard box The transportation packaging industry is a major user of EVA hot melt […]
More and more manufacturers are using EVA hot melt adhesive to process books and other materials, regardless of the size of the processing plant, there will still be an upward trend in the future. This is because using this adhesive has the advantages of fast book publishing, short cycle time, beautiful appearance of books, and […]
