One hopper for new material and the other for used material, the ratio can be adjusted by feeding speed. Or use a mixer to mix the new and used materials evenly, then transfer the materials by automatic feeding machine into two hoppers respectively.

This machine adopts double screw. The screw heating is automatically controlled by an independent water cooling system.

The net changer is changed by hydraulic system. Material extruding controlled by gear pump, more precisely.

The temperature of three rollers is controlled by an external thermostatic system, which needs preheating for about 1 hour to stabilize the setting temperature. Three rollers are controlled separated by servo Motor.

Silicone oil will drop in the middle of roller, and spread on the whole surface through the extrusion of the following roller. Then the silicone oil dried by two ovens to ensure the drying degree of the sheet.

● Uniform material distribution: Hanger die head flow channel design makes the molten material flow out of each point of the die lip at basically the same time, theoretically avoiding the problem of material stagnation and ensuring the uniformity of the sheet thickness.

● Lightweight structure: Compared with the traditional die head, the hanger-type structure is lighter and suitable for high-speed production;

● Precise thickness adjustment: The dual throttling design and independent temperature control system can accurately adjust the thickness of the sheet, and the temperature difference control is accurate to ±1℃ to ensure flatness.

● Easy maintenance: The die lip can be designed with a continuous unobstructed flow surface, combined with high-strength bolts and zoned heating system to simplify the cleaning and maintenance process.

● High-precision thickness measurement

This is the most basic and most critical function. The single-point thickness of the sheet is directly measured through contact (such as mechanical probe) or non-contact (such as laser, infrared) sensors.

Contact type: suitable for materials with flat surface and moderate hardness (such as plastic sheets, paper). The probe contacts the surface of the material with slight pressure to avoid errors caused by excessive extrusion;

Non-contact type: suitable for materials that are easy to deform and sensitive to the surface (such as film, metal foil). The thickness is calculated by light or sound wave reflection to avoid damage to the material.

● Multi-point/continuous scanning measurement Supports multi-point measurement of different positions of the sheet (such as edge, center, random point), or continuous scanning through automatic conveying device (such as online detection on coil production line) to obtain the thickness distribution data of the sheet (such as maximum thickness, minimum thickness, average thickness).

● Data recording and analysis

Built-in data storage function can record the value, time, number and other information of each measurement; some high-end models are equipped with software that can automatically generate thickness distribution curves and statistical reports (such as standard deviation, range), which intuitively reflect the uniformity of material thickness.

● Tolerance determination and alarm

The thickness acceptance range (tolerance) can be preset. If the value exceeds the range during measurement, the instrument will use sound and light alarm prompts to quickly identify unqualified products and prevent defective products from flowing into the next process.

● Adaptable to a variety of materials and thickness ranges

Different models of thickness gauges can cover different thickness ranges (such as 0.001mm~10mm, or even thicker), and can adjust measurement parameters (such as probe pressure, scanning speed) according to material properties (hardness, flexibility, transparency, etc.) to meet diverse testing needs.