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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.
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