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After long-term storage, hot melt adhesive particles may become yellow and brittle, and the bonding strength may decrease, but the degree of attenuation is closely related to the storage conditions. Only by scientifically evaluating the degree of aging can we decide whether to continue using or replace the adhesive, in order to avoid blind scrapping and waste.
| Storage conditions | Storage for 6 months | Storage for 12 months | Stored for 18 months |
|---|---|---|---|
| Sealed and cool (20-25 ° C) | Attenuation<5% | Attenuation of 5-10% | Attenuation of 10-15% |
| Sealed+room temperature (25-35 ° C) | Attenuation of 5-10% | Attenuation of 10-20% | Attenuation of 15-25% |
| Non sealed+room temperature | Attenuation of 10-20% | Attenuation of 20-35% | Attenuation of 30-50% |
Unopened original bags can be stored in a cool and dry place for 18-24 months; After opening, be sure to seal and store it, and try to use it up within 3 months. Sunlife hot melt adhesive is sealed with double layers of aluminum foil inner liner and woven bag when leaving the factory. Guangzhou Sunlife Trading recommends customers to purchase in batches according to monthly usage, with small batches and multiple frequencies to reduce the risk of aging after opening the bag.
EVA hot melt adhesive is a type of plastic adhesive product. The physical state of hot melt adhesive changes with temperature within a certain temperature range, but its chemical properties remain unchanged. Hot melt adhesive is non-toxic and odorless. How much do you know about the six major ways of applying hot melt adhesive? 1. […]
Is it more cost-effective to bind the instruction manual with saddle nails or glue? One sentence conclusion:Thin pages and small batch selection of saddle nails are more cost-effective; Having multiple pages, requiring high-end or long-term storage, the overall cost of adhesive packaging is better.The selection of manual binding should not only consider the processing fee […]
Direct conclusion Small batch, multiple varieties, frequent order changes (such as graphic printing, sample box sampling), choosehot melt adhesive powderMore flexible; Continuous large-scale production, equipment installation (book and magazine linkage line, sealing spray glue machine), orHot melt adhesive granulesMore stable and cost-effective. Both are of the same kindhot melt adhesiveThe core difference lies in how […]
Photo books (album books) often use thick copperplate paper and pearlescent paper, which have high weight, smooth surface, and high requirements for initial adhesion and flexibility of the adhesive. Direct conclusion: Prioritize the transparent high initial adhesion EVA system and select the softening point according to the thickness of the book core. Selection List Procurement […]
