40 μm opaque white PE release film, silicone UV cured, for protective and packaging, tapes, labeling and graphics
40 micron opaque white PE silicone coated release film is mainly used as a release liner in the manufacturing of various adhesive products.
The opaque white color of the film provides a solid, non-transparent surface that can conceal the adhesive or product underneath the release
liner. The silicone coating on the film provides a non-stick surface for the adhesive, allowing for easy release during product assembly or
application.
Here are some common applications where 40 micron opaque white PE silicone coated release film is used:
1. Tape production:
The release film is used as a liner for adhesive tape products, such as double-sided tape, masking tape, or duct tape.
The opaque white release liner helps to conceal the adhesive and ensures a clean appearance of the final product.
2. Label production:
The release film is used as a liner for self-adhesive label products. The opaque release liner helps to conceal the adhesive and ensures a
visually pleasing appearance of the label.
3. Automotive applications:
The release film is used in various automotive applications, such as protective films for painted surfaces and vehicle wrapping applications.
The opaque white release liner helps to reduce the visibility of the adhesive residue and provides a clean appearance.
4. Medical applications:
The release film is used in various medical applications, such as wound dressings, adhesive patches, and transdermal drug delivery systems.
The opaque white release liner helps to reduce the visibility of the adhesive residue.
5. Electronics:
The release film is used in electronic manufacturing processes, such as protective films for electronic screens and touch panels.
The opaque white release liner helps to provide a clean, unobstructed view of the electronic products.
Overall, 40-micron opaque white PE silicone-coated release film is versatile and has multiple uses in different industries where the non-transparent release liner is needed. The silicone coated surface ensures easy release of the adhesive, and the opaque white color provides a
clean and aesthetically pleasing appearance.
Coating silicone on the surface of PE film involves a multi-step process that includes the following:
1. Preparation of the film:
The first step is to prepare the surface of the PE film to ensure good adhesion of the silicone coating. The film may need to be cleaned and
treated with corona discharge or plasma to enhance its surface energy.
2. Application of silicone:
The silicone can be applied to the surface of the film using a wide range of methods, including spraying, dipping, or roll coating.
A silicone solution is prepared with a specific level of viscosity and concentration so it can be applied evenly to the film.
3. Curing of silicone:
Once the silicone has been applied to the film, it needs time to cure. Most commonly curing is done at a high temperature, typically above
120°C to allow uniform curing for better curing as well as adhesion to the PE substrate.
4. Trimming or die-cutting:
After the coating is cured, the coated PE film is trimmed to the correct size or cut into the desired shape using specialized equipment.
| 1 | Appearance | No air bubbles / stains / breakage / impurities | Measured |
| 2 | Size | Width (mm) | 960 ± 5 | 962 |
| Thickness (mm) | 0.040 ± 0.005 | 0.042 |
| 3 | Max. Tension (N / 50mm) | TD | ≥ 30 | 44 |
| MD | ≥ 30 | 52 |
| 4 | Color | White | Colorimeter △E＜ 3 | ok |
| 5 | Elongation @ break (%) | TD | ≥ 150 | 594 |
| MD | ≥ 200 | 479 |
| 6 | Surface Tension (Corona treatment) | Dyne Value | ≥42 dyne for each side | 46 |
| 7 | Release Force (gf/25mm 20min.Finat 10) | Inner | 5-10 | 7 |
| Outer | 20-30 | 24 |
| 8 | Subsequent Adhesion (%) | Inner | ≥85 | 88 |
| Outer | ≥85 | 90 |
| 9 | Winding direction | Customized | - |
| 10 | Splice No. | ≤1 | - |
UV curing method is becoming increasingly popular for silicone coating on PE film in recent years. The UV curing method involves the use of
UV light to initiate a chemical reaction in the silicone, which then causes it to cure and crosslink. In contrast to the heat curing method, the UV-
curing process uses light waves in the ultraviolet spectrum rather than heat.
There are some advantages to using UV curing as a method to cure silicone on PE film:
1. Faster curing time:
The UV curing method is generally faster than the heat curing method and can often cure the silicone coating in just a few seconds.
2. Energy-efficient and eco-friendly:
Since UV curing does not require high heat temperatures, it is a more energy-efficient process and has a lower carbon footprint which
makes it an eco-friendly option.
3. High-quality coating:
UV curing results in a uniform and high-quality silicone coating with excellent adhesion and chemical resistance.
4. Lesser production time:
Compared to heat curing, the UV curing process can save time, resulting in faster production times.
5. No heat damage:
UV curing on PE film does not result in any heat damage, which ensures that the substrate's properties remain intact in the production process.
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40uM Opaque White PE Release Films Width 2m Silicone UV Cured Images
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