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Many customers see Hot melt adhesive granules If it turns yellow, I’m worried about poor quality. In fact, the color mainly comes from the resin grade and whether anti-oxidation and thickening agents are added, and has no direct relationship with whether it is sticky or not.
| color | Common causes | Typical use |
|---|---|---|
| White/Milk White | Light colored resin with minimal additives | Light colored paper, transparent window, high appearance requirements |
| Yellow/Slightly Yellow | Dark colored thickening resin or antioxidant | Ordinary books, corrugated boxes, concealed locations |
| Transparent | Special low yellowing formula | Gift boxes and electronic packaging can meet in person |
Look at the adhesive object and appearance requirements: For invisible positions such as sealing boxes and book spines, yellow material has a high cost performance ratio; Gift boxes, transparent windows, light colored cardboard and other “exposed” positions require white or transparent materials. Sunlife Hot Melt Adhesive’s Guangzhou Sunlife Trading offers white/yellow/transparent multi color options, according to the appearance of your finished product, without having to spend extra money on invisible areas.
Q1: Will yellowing become increasingly severe?
Qualified materials are stable within their shelf life, and exposure to sunlight can accelerate yellowing. They should be stored away from light.
Q2: Does it matter if the color of the same model is slightly different?
The slight difference between different batches is normal, and the strength is not detected in color.
Q3: Is transparent adhesive necessarily the most expensive?
Usually slightly higher, but only when available in person, with controllable dosage.
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