新闻中心
Whether using hot melt adhesive for packaging, automotive, printing materials, or any other adhesive application, details are important. The good case is that inefficient use of adhesive can lead to waste – the bad case is that it can cause system problems, thereby increasing costly downtime.
One of the common problems encountered with hot melt adhesives is adhesive bonding. We have compiled the following guide to help you understand what wire drawing is, how it occurs, and how to solve it.
What isHot melt adhesive wire drawing?
When some adhesive material is left on the nozzle and pulled into a line, hot melt adhesive wire drawing occurs, whether it is automatically pulled off the production line or manually pulled out when the pistol is pulled away from the application surface. The adhesive thread left behind is sometimes referred to as “angel hair”.
Hot melt adhesive wire drawing can affect any hot melt adhesive application, but it may cause problems for certain special situations:
In food packaging applications, hot melt adhesive wire drawing can cause adhesive fragments to fall off and contaminate food.
In pharmaceutical applications, hot melt adhesive wire drawing may break inside the drug packaging, which may result in accidental ingestion.
In automotive applications, the application of precision adhesives on visible components is an important part of ensuring the cleanliness of the car’s appearance.
In the application of box and cardboard box sealing, hot melt adhesive may appear on the product or on the box containing the product.
What causesPackaging hot melt adhesive wire drawingHow can I solve it??
There are various reasons that can cause hot melt adhesive wire drawing, including:
Application temperature:When the adhesive temperature is not high enough, the adhesive will become too viscous, leading to wire drawing..
Solution:Check your hot melt material data sheet （MDS） To find the correct temperature setting.
Delayed shutdown:In older glue gun switches, the shutdown speed is slower..
Solution:Senlai hot melt adhesive technical experts are happy to help you determine whether the use of adhesive equipment is a factor causing the hot melt adhesive wire drawing problem..
Distance from surface:If the distance between the gluing equipment and the surface is too large, it will cause the adhesive to cool down after application, resulting in wire drawing..
Solution:Try to reduce the distance between the gluing equipment and the application surface..
Other potential causes:Over the years, we have seen various components and issues that cause packaging hot melt adhesive wire drawing, including debris accumulation in hoses and other components, solenoid problems that hinder the normal circulation of hot melt guns, and so on.
Proper preparation and preheating are required when using hot melt adhesive for books and periodicals to ensure smooth operation. The goal is to achieve a good bonding effect. When using EVA hot melt adhesive, the first step is to master the preparation process such as preheating and temperature control before use. 1. Add glue It […]
What are the uses of filter gel? An air filter is a component used to purify the air. Filters are generally used in farms, laboratories, sterile rooms, car engines, car air conditioners, household air conditioners, household air purifiers, etc. 1、 Hot melt adhesive for flat filter The commonly used filter cartridge adhesive is the high-efficiency […]
How to use book hot melt adhesive correctly? Books are our spiritual pillar! The books we read every day have become a necessity in our daily life system. It establishes ideas, regulates behavior, comforts the spirit, and expresses emotions. In terms of book design, the overall design of the book is crucial. The choice of […]
What are the ways to change the demand for packaging hot melt adhesive? Decades ago, primary packaging was the main focus of manufacturers, shop owners, and consumers. In most cases, few people handle the goods before they enter the hands of shop owners and consumers. However, once the hypermarkets began to take effect, increasing the […]
