Q1: Our production line operates very fast. Is the opening time of this adhesive sufficient?
A1: This is precisely one of the advantages of polyolefin hot melt adhesives. Its rapid curing property is specifically designed for high-speed lines. We suggest you inform us of the specific production line cycle (for example, how many lids per minute), and we can provide a more suitable model or help you adjust the temperature parameters to fine-tune the opening time to ensure it aligns with your production rhythm.
Q2: Why does the same type of glue work fine in summer but seems to lose its adhesion or crack easily in winter?
A2: This is a common practical problem in the application of hot melt glue. The underlying reason is that the environmental temperature affects the flexibility of the glue layer. We have prepared different seasonal formulas for this. In winter, when the temperature is low, a “winter-use” formula with lower flexibility is needed; conversely, in summer, a “summer-use” formula with higher heat resistance is required. Communicate with us during the transition seasons to help you avoid such problems.
Q3: The adhesive lines on the bottle caps seem a bit thick, or there is a small amount of excess adhesive, which affects the appearance. How can this be improved?
A3: This can usually be resolved through process optimization. Please check the following steps:
Q4:Adhesive application amount: Is it too much?
A4:Try reducing the amount of adhesive slightly.
◊Temperature: Is the temperature too low? Increasing the temperature appropriately (within the safe range) may make the flow of the glue more even and the glue line thinner.
◊Pressure and pressing time: Was the pressure during pressing sufficient and uniform? Was the pressing time long enough to ensure that the glue initially solidified under the pressure?
◊Mold positioning: Is the mold fit of the bottle cap component precise enough? Are the gaps too large?
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