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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.
Whether it’s a newly opened or taken over from someone else’s factory, as my first purchase of hot melt adhesive, it’s indeed not as simple as just “buying glue” as I feel in daily life. If the wrong hot melt adhesive is selected, it may lead to the inability to spray the adhesive, bonding failure, […]
Hot melt adhesive granulesIs it environmentally friendly or toxic? Legitimate hot melt adhesive particles themselves are thermoplastic polymers that are solid, non-volatile, and insoluble in water at room temperature, making them relatively safe adhesive materials. Whether it is “toxic” mainly depends on the formula and high-temperature usage method. Looking at safety from three aspects raw […]
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.
Let me start with a true story that I’ve been remembering for eight years. In the winter of 2016, a printing factory owner called me at 11 a.m. and started off by saying, “Brother Shu, something big has happened. The 50,000 textbooks I just bound have their adhesive ridges broken on the first page. The […]
