新闻中心
PET (polyethylene terephthalate) plastic film has low surface energy and high crystallinity, and is widely recognized as a difficult to stick material. Ordinary EVAhot melt adhesive pelletsThe problem of initially sticking PET but suddenly decreasing peel strength after cooling is often encountered, and the fundamental reason is that the adhesive cannot effectively infiltrate the surface of PET.
The key to making the hot melt adhesive particles stick firmly to the PET film is not about “how thick to apply”, but about “choosing the right model”. There is a modified formula specifically developed for low surface energy materials in Sunlife hot melt adhesive granules, which enhances the affinity for PET surface by introducing polar groups. After cooling, the peel strength can reach over 3N/cm.
The technical team of Guangzhou Sunlife Trading can recommend corresponding models based on customers’ specific PET film types (transparent/aluminum plated/printed surface).
Q: How long does it take for the hot melt adhesive particles to peel off after sticking PET?
A: Ordinary rubber particles usually have edge warping within 24-48 hours; After selecting the right modified formula, it can maintain adhesion for a long time without detachment at room temperature.
Q: Can we compensate for the weak adhesion by increasing the amount of glue applied?
A: Not recommended. Excessive thickness of the adhesive layer can increase internal stress and accelerate delamination. The correct approach is to change the formula rather than the amount of adhesive stacked.
Q: Is aluminum coated PET film harder to stick than transparent PET?
A: Yes, it is. The aluminum plating layer blocks the penetration of the adhesive solution, so it is necessary to choose modified adhesive particles with stronger permeability or apply a primer treatment on the aluminum plating surface.
You will find hot melt adhesive everywhere in your daily life. From the furniture you sit on to the corrugated cardboard boxes containing mail at the local post office, it is not difficult to find items bonded with this popular adhesive. Companies that work with wood, fabric and foam plastics, shoe manufacturers, bookbinders and plastic […]
Adhesives are used almost everywhere in the manufacturing industry to keep things together. Having a reliable adhesive will make a difference when attempting to bond surfaces. Each type of adhesive has its unique characteristics, which may make one adhesive more suitable for your current application than others. Water based adhesive Commercial water-based adhesive, also known […]
The types of hot melt adhesive include: ethylene vinyl acetate (EVA) adhesive Ethylene vinyl acetate (EVA) is a polymer based material used for standard packaging of industrial hot melt adhesives. EVA produces high-performance and highly competitive packaging hot melt additives. Ethylene vinyl acetate is considered the primary choice for many applications as it offers one […]
What exactly is’ drawing ‘on the machine At the moment of glue coating or breaking, a thin wire is pulled out from the end of the sealing or gluing line, which is called “drawing” in the industry.Hot melt adhesive granulesAfter melting, it is a high viscosity hot fluid, and once the temperature, flow rate, and […]
