A protective film residue-free attaching technique
By using a composite process of LDPE film and PET tape layer, combined with automated equipment and a special film-tearing handle, the problems of residue and environmental pollution caused by protective film in the processing of high-gloss metal products have been solved, achieving efficient and residue-free application of protective film.
CN122357012APending Publication Date: 2026-07-10SHENZHEN ASIA TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN ASIA TECH CO LTD
- Filing Date
- 2026-05-28
- Publication Date
- 2026-07-10
AI Technical Summary
Technical Problem
Existing protective films have problems such as residual adhesive residue, low processing efficiency, and serious environmental pollution in the processing of high-gloss metal products.
Method used
Linear low-density polyethylene (LDPE) film is prepared by extrusion molding and then bonded to a PET tape layer by hot-pressing lamination. The fully automatic roll-to-roll laminating machine is used to achieve automated lamination and peeling. Combined with the tear handle and release film design, it ensures no residue and environmental friendliness.
Benefits of technology
It achieves automated bonding and peeling of protective film without residue, improving processing efficiency, reducing environmental pollution, and meeting green processing standards.
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Smart Images
Figure CN122357012A_ABST
Abstract
This invention relates to the field of metal product processing protection technology, and provides a method for a protective film with no residue adhesion, comprising the following steps: S1, protective film preparation; S2, preparation before automated lamination; S3, automated lamination and processing protection; S4, automated peeling and recycling. In this invention, a high-adhesion LDPE film without an adhesive layer is used as the core protective layer, which adheres to high-gloss metal products by its own adhesion, leaving no trace residue after peeling. The LDPE film is structurally reinforced by a composite PET tape layer, which is compatible with automated lamination equipment to achieve "automated lamination + automated peeling," eliminating the need for the complex "spraying-removal" process of existing ink & paint protection, greatly simplifying the process and improving processing efficiency. Both the LDPE film and the PET tape layer meet environmental protection requirements, the peeling handle facilitates quick peeling of the protective structure after processing, and the release film protects the protective structure from impurities during storage and transportation.
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