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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.
During the use of hot melt adhesive, many customers have reported that the glue does not stick. Therefore, most users will encounter various troubles in the production process because they do not have a deep understanding of hot melt adhesive. Below is a detailed introduction on how to improve the bonding strength of hot melt […]
In the adhesive industry, rosin and modified materials are the most commonly used thickeners. Today, we will share some performance indicators of these resins: Rosin ① Name and characteristics Chinese alias: Tar rosin; Raw rosin. English name: Rosin. English alias: Symphony. Rosin is a transparent solid that is slightly yellow to yellow red in […]
Hot melt adhesive granulesHow much does one ton cost? Hot melt adhesive particles are priced by ton, but the price range is wide: ordinary EVA book/seal particles are mainly priced at around 9000-14000 yuan/ton, while modified, low-temperature fast curing, or PO specific particles may be priced at 15000-22000 yuan/ton. The price is not determined by […]
The packaging industry is rapidly changing with fluctuations in demand from various industries. However, nearly 80 years after the invention of the first adhesive product designed to address temperature and humidity challenges, a fact still exists – all types of industries rely on hot melt adhesives. At the time of its invention, this multifunctional adhesive […]
