At present, there are dozens of ways to make beverage bottle labels on the market, and today we are going to introduce one of them - a heat shrinkable sleeve labeling machine based on a Leister heat gun. The key points of this process are two parts: material and heat shrinking process.
First of all, the label on the beverage bottle is a heat-shrinkable film label roll. After the shrinkable film is heated and shrunk, it wraps a part of the beverage bottle, or wraps the entire beverage bottle, which is called a heat-shrinkable sleeve label. Common materials for shrink film include PP, PE, PET, and PVC. In the process of label design, not only the size of the product, but also the thermal shrinkage rate of the label material should be considered. If the heat shrinkage rate is too high or too low, it will affect the effect of the sleeve label.
Secondly, it is the heat shrinking process. During the production process, the beverage bottle is transported to the heat shrinking process section by the conveying mechanism. When the system detects that the beverage bottle reaches the Leister hot air unit, the Leister hot air unit starts to work and passes through the customized air nozzle. The hot air is quickly and evenly sent to the surface of the shrink film label, so that the shrink film label is heated and shrunk, and it is firmly attached to the surface of the beverage bottle.
We can understand the heat shrinking process through the animation.
The speed of the conveyor belt is reduced in the animation to show the process flow. In the actual production process, the heating time for the label will not be more than 1 second , or even less than 0.5 second . The extremely short heating time puts forward strict requirements for the stable performance of the hot air unit. Leister's hot air unit can be used in various applications to heat shrink films of various specifications. It has precise temperature control and standard automatic signal interfaces, and can complete the heat shrinking process quickly and efficiently.
Let us introduce the Leister hot air units suitable for automatic shrink sleeve labeling machines:
VULCAN SYSTEM air heater, intelligent design, sufficient air volume, high heating power, excellent performance, equipped with standard signal interface, compact structure design, not only can easily realize remote control, but also facilitate the integration and installation of automation systems.
MISTRAL hot air blower, a new type of hot air blower integrated with new technology, is equipped with a maintenance-free brushless blower inside as standard, which can work continuously for a long time. The internal control can be used alone for stepless adjustment of air volume and temperature, or it can form a closed-loop system with PLC and other controllers through the external interface.
HOTWIND hot air blower is widely used. It can be integrated into the control system or used alone for closed-loop control. It has the function of potentiometer to adjust the heating temperature or power, and the air volume of the blower. HOTWIND has a friendly interface, LCD screen to display various status information, precise temperature control, and automatic cooling function.
The wide-slot air nozzle developed according to the heat-shrinking process can gather hot air to heat the shrink film label intensively.
The screen air nozzle developed according to the heat shrinking process can heat the entire area of the shrink film label.
