What is the difference between hot / ultrasonic /laser cutting of woven labels?
Woven label is widely used, popular all kinds of clothing, shoes and hats, home textiles, toys, handbags, luggage, tie on the main label, wash label, size label, decoration label. Flexible processing, can be eager, ultrasonic and laser laser for a variety of width (1-20cm), add fill the lock, refined various badges, badges, armbands, epaulets, etc., in technology has reached the European and American synchronization level. Woven labelsare divided according to the treatment of edges: woven labels and cut labels (cut labels and cut labels are divided into eager woven labels and ultra-cut woven labels). The cut labels are woven on a special high-speed machine, just like cloth, and then cut into strips according to the width of the label.
Eager label is the use of polyester hot melt characteristics, using a high heat of cutting knife, to cut the whole intermediate points into each collar label, due to high heat, yarn will stick together when cut, will not loose edge, in if the production process, due to machine breakdown or do not pay attention to operation, and is easy to get the burning hot the hard edge of the undulating, it would be easy to blow to the skin, causing discomfort, trimming of the woven label is generally not suitable for children's clothes.
Ultra-cut woven labels is a machine that uses an ultrasonic transducer to act on the shearing part of the product, and then presses the tool to the shearing part of the product to make it close to the ultrasonic die. The ultrasonic energy is transmitted to the shearing zone by the ultrasonic die, and since the shearing zone, that is, the product has a large interval of sound resistance between the cutter and the ultrasonic die, local high temperature is generated. Moreover, due to the poor thermal conductivity of the product, it can not be dissipated in time and gather in the shearing zone, so that the pressed surface of the product melts rapidly and splits into two. When the ultrasonic wave stops, the section is rapidly cooled to form a molten solution, and the incision is beautiful.
Laser cutting uses the laser beam emitted from the laser generator to be focused into a high power density laser beam irradiation condition. The laser heat is absorbed by the workpiece material. The workpiece temperature rises sharply. After reaching the boiling point, the material begins to vaporize and form a hole. • Airflow with high pressure? As the beam moves relative to the workpiece, the material eventually forms a slit. The process parameters (cutting speed, laser power, gas pressure, etc.) and the trajectory of the slit are controlled by the numerical control system. The slag at the kerf is blown off by the auxiliary gas of a certain pressure.