In the production process, the control of the size and thickness of the bag is crucial, which directly affects the quality and market acceptance of the product. Here are the main ways to control bag size and thickness
Control bag size
Preset parameter adjustment:
The T-shirt bag making machine is usually equipped with a control panel or touch screen, in which the operator can preset the length, width and other parameters of the bag. The setting of these parameters is based on the design requirements of the product and market demand.
Length control: The length of the bag can be precisely controlled by adjusting the position of the cutting device or setting the cutting interval. Some advanced bag making machines are also equipped with automatic tracking systems that can monitor and adjust the cutting position in real time to ensure the accuracy of the bag length.
Width control: The width of the bag is mainly determined by the width of the die head. Before production, it is necessary to select the appropriate die head according to the specifications of the bag, and adjust the position of the die head to ensure that the width of the bag meets the requirements.
Real-time monitoring and adjustment:
During the production process, the bag maker monitors the bag size in real time and compares it with the preset parameters. If the deviation is found, the machine will automatically or prompt the operator to adjust to ensure the stability of the bag size.
Control bag thickness
Extruder parameter adjustment:
The thickness of the bag is mainly determined by the extrusion volume, extrusion speed and temperature of the extruder. By adjusting these parameters, the thickness of the plastic film can be controlled, and then the thickness of the bag can be controlled.
Extrusion amount: Increasing the extrusion amount will make the film thicker, and vice versa. Therefore, it is necessary to adjust the extrusion amount according to the thickness requirements of the bag.
Extrusion speed: The speed of extrusion speed will also affect the thickness of the film. Generally speaking, the faster the extrusion speed, the thinner the film; The slower the extrusion speed, the thicker the film.
Temperature: The level of extrusion temperature has a direct impact on the fluidity of plastics. Appropriately increasing the extrusion temperature can increase the fluidity of the plastic and make the film more uniform; However, too high a temperature may cause problems such as poor melting of plastics or bubbles.
Stretching and cooling control:
After the film is extruded, it usually undergoes a stretching and cooling process. The stretching degree and thickness uniformity of the film can be controlled by adjusting the speed and heating temperature of the drawing roller.
The control of cooling temperature is also important. Appropriate cooling temperature can make the film solidify quickly and maintain a certain thickness; However, too high cooling temperature may cause the film to become brittle or crack.
Material selection:
The thickness of the bag is also affected by the material chosen. Different materials of plastic have different physical properties and processing properties, so it is necessary to choose the right material according to the specific needs of the product.
