一种利用印刷废薄膜制备打包带的方法
By combining a screw extruder with specific parameters and a three-stage temperature control process with modified auxiliary materials, the feeding and performance issues of PET printed waste film in the preparation of packing tape were solved, achieving efficient and stable processing and production of packing tape with excellent comprehensive performance, possessing good mechanical properties and UV aging resistance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGDONG BAOZHUANG TECH CO LTD
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, when PET printed waste film is used to prepare packing tape, there are problems such as feeding bridging, melt foaming, and molecular chain thermal degradation. It is also difficult to balance the mechanical properties and weather resistance of the packing tape, which cannot meet the needs of industrial applications.
By employing a screw extruder with specific parameters and a three-stage temperature gradient temperature control process, combined with a forced feeder, the physical properties of the base raw materials are controlled. Modifying auxiliary materials such as ABS, maleic anhydride-grafted PET, modifiers, and modified silica are added. Through customized melt extrusion process and modification treatment, a packing strap with excellent comprehensive performance is prepared.
This technology enables efficient and stable processing of waste PET printing film, producing packing tape with excellent comprehensive performance, good mechanical properties and UV aging resistance, thus enabling resource utilization of waste and reducing production costs.
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