新闻中心
UnopenedHot melt adhesive granulesIt can usually be stored for 12-24 months in a cool and dry place; Once opened, it is recommended to use it within 3-6 months. Whether it is sealed or not directly determines whether the rubber particles will absorb moisture, clump, and decrease in performance.
| Comparison item | Store in a sealed container | Open storage |
|---|---|---|
| Moisture absorption risk | low | high |
| Shelf life | more than 6 months | 1-3 months |
| Performance on the computer | stable | Easy to bubble and break strips |
Sunlife hot melt adhesive is packaged in double layers of moisture-proof inner film and outer woven bag. After opening, it is promptly sealed to effectively extend its shelf life. Guangzhou Sunlife Trading also supports small batch delivery based on weekly usage, reducing long-term open storage.
Q: Can expired rubber particles be used?Not necessarily. Conduct a sample test first, and if the performance meets the standard, it can still be downgraded for use.
Q: Can damp rubber particles recover after drying?Mild moisture and low-temperature drying can be salvaged, while severe clumping is recommended for disposal.
Pulp molded inner trays (egg trays, electrical liners) often require corrugated outer boxes or positioning cardsDotting and fixingIt has a rough surface and absorbs water, making it easy to overflow and crack if the wrong glue is used. Here is a set of three steps that can be copied directly. Step 1: Choose the right […]
After cutting three sides of the adhesive book, the spine of the book is exposed with bare adhesive, known as the “exposed adhesive root”, which is a different appearance defect from empty adhesive/unevenness/overflow adhesive. Explain how it is generated, how to troubleshoot it, and how to prevent it with a four step machine.
Choose hot melt adhesive granules and focus on 7 key parameters: softening point, melt viscosity, opening time, curing time, initial adhesion, temperature resistance range, color and appearance. This article compiles the meanings, common ranges, and selection points of each parameter into a table, which can be directly compared and used by procurement and technology. List […]
Whose pot is the offset of the cover indentation line? Offset of crease lines on hardcover book covers is a common quality control issue, manifested as the bending of the cover not being in the design position, and in severe cases, causing the cover to warp and the spine to be uneven. Many people initially […]
