The ‘S’ and ‘W’ of hot-melt adhesive coating and ultrasonic cutting on Eas Pocket Label Tag
Eas pocket label tag is known as one of the security products to be used on garment clothing for retail stores anti-theft. The specialty of such kind of security label tag that different from normal hard tag is that it is more suitable for source tagging that to be tagging at source of manufacturing, and most importantly, cost-effective.
The security label tag is with Eas alarming soft label coated inside with fabric pocket, to be sewn on clothes. And how to make the alarming sensor soft label being coated with the fabric pocket? The normal and traditional production technics of the Eas pocket label tag is hot-melt adhesive coating on the fabric with the sensor alarming soft label.
Hot-melt adhesive glue is a kind of glue that does not have harm on the environment, and the glue is solid state in ordinary temperature, like massive, layer, strip or granular, which makes it convenient for easy package, storage, transport and usage. Moreover, when the glue is being hot-melt to coating on fabric, it can fastly stick and coat when the glue is cooling and curing. This makes the hot-melt adhesive glue quite fit for auto production line with high manufacturing efficiency. Because of these advantages of the hot-melt glue, therefore it’s widely and mostly used for Eas security pocket label tag’s manufacturing.
While at the same time, using hot-melt adhesive for security pocket label tag coating also has its own defects.
- Not great heat resistance and not strong enough adhesiveness; Have high requirement on hot-melting and coating equipment.
- Some of the hot-melt adhesive glue will easily turn to yellow when temperature is over 30℃, and it will be yellowing the fabric as well if in this case.
- The fabric can be wrinkle during hot-melt adhesive coating, thus the high requirement on coating equipment.
- The hot-melt adhesive coating fabric can be too stiff for sewing machine needle to pass through and has certain damage on sewing needle.
- Coating cost is a bit too high to manufacture with hot-melt adhesive glue.
- The fabric material will easily stick on the cutter because of the glue.
Due to the above listed defects of using hot-melt adhesive glue for security pocket tag coating, security pocket tag manufactures can receive oftenly claims from garment factories for not easy for sewing needle to pass through the pocket tag or from garment retailers that the yellowing on the fabric making their new clothes with stains and so on.
Based on the above facts and situation, security tag supplier has found out another better solution to solve the problems——Ultrasonic cutting technics.
Ultrasonic cutting is totally different from traditional cutting. Ultrasonic cutting is to use the power of ultrasonic transducer to heat and melt the cutting fabric material so fast as for cutting off. So ultrasonic cutting does not need sharp cutter edge or very strong pressure, and will not break or damage the cutting fabric edge. In this case the cutting sealing edge on the fabric will not have rough selvage, creases, silk running or laddering and so on.
Another big advantage of ultrasonic cutting is that, it fuses the fabric cutting part and automatically seals the cutting edge quite well when cutting on the fabric, avoiding fabric sealing edge turning loose. What’s more, the fabric material will not stick on the cutter even after ultrasonic fusing, which in some way to improve the cutting efficiency. And clothing factories do not need to worry about the damage on sewing machines needle when sew the label tag on.
The manufacturing efficiency is much higher with ultrasonic cutting technics comparing to the hot-melt adhesive coating so it’s now widely used by security tag manufactures. Ultrasonic cutting manufacturing can increase the production speed, expand production capacity and most importantly, highly reduce cost.
