Polyethylene (PE) release film occupies a place in many industrial applications due to its excellent physical properties and economic cost. PE release film refers to the coating of one or several layers of special release coating on the polyethylene film to give it good release performance. Behind this technology lies the subtle chemistry and processing process, and the next step is to unveil the PE release film formulation.
Infrastructure**
The production of PE release film begins with the selection of polymer polyethylene material. Typically, LDPE (Low Density Polyethylene) or LLDPE (Linear Low Density Polyethylene) with good processability and mechanical properties are used. These materials are easy to form by blowing or casting films.
Release coating**
The release coating is an indispensable part of the PE release film. In general, coatings consist of silicone oils, crosslinkers, and thixotropic agents, which need to be precisely proportioned to the specific application. Silicone oil, as the main active ingredient, provides the sliding and non-sticky properties of the film surface; The crosslinker helps the coating form a network structure, which enhances the temperature resistance and mechanical strength of the film; Thixotropic agents control the viscosity of the coating and ensure uniform application.
Additives** To improve the overall performance of PE release films, additives such as antioxidants, UV absorbers, talcum powder, etc. may also be required. Antioxidants can prevent or slow down the degradation of materials due to oxidation during production and use; Ultraviolet absorbers can increase the weather resistance of the film and avoid yellowing or degradation of performance after long-term exposure to sunlight; Fillers such as talc can adjust the transparency of the film and increase the sense of thickness.
Considering environmental protection and human health, modern PE release film formulations also pay special attention to the selection of raw materials that meet environmental standards to ensure that the product is safe and environmentally friendly.
Scientific and rigorous formula design combined with advanced process technology jointly defines the market performance of PE release film. Thus, this silent industry standard not only promotes the performance of products, but also promotes the technological innovation and progress of related industries. With the deepening of research and the development of technology, the formulation of PE release film will continue to be optimized to adapt to a wider range of application scenarios and strict environmental protection requirements.