It is suitable for manufacturing hot stamping film, laser film, gold and silver paperboard which need coating and laminating.
1, release film
A release film refers to a film having a separation surface which is not sticky or slightly viscous after contact with a specific material under limited conditions.
Usually, in order to increase the release force of the plastic film, the plastic film is subjected to plasma treatment, or fluorine treatment, or a silicon release agent is applied on the surface of the film material, so that it exhibits for various pressure sensitive adhesives. Extremely light and stable release force. According to the different release force of the release film, the viscosity of the insulation product is different, and the release force is adjusted accordingly, so that it achieves extremely light and stable release force during peeling.
• 1.2 release film classification by substrate:
> PE (polyethylene) release film;
> BOPP (polypropylene) release film;
> PET (polyester) release film.
Classified by release force:
>Ultra-light release liner (<5§)
>Light release release film (5-10g);
> Medium release release film (10-50g);
>Removal release film (50g or more).
Classified by silicone oil coating:
>Ordinary silicone oil release film >Fluorine plastic release film
>Other categories: such as high temperature silicone pressure sensitive adhesive.
Classified by surface color:
A red release film, a yellow release film, a green release film, a blue release film, a white release film, and the like, and a PET release film of various colors.
Classification by substrate surface treatment:
Single-sided release film, double-sided release film, no-free release film.
Second, the length of the coating section changes, the spacing is unstable:
3. Reasons and countermeasures for the phenomenon of wrinkling of the pole piece during the operation of the coater
1. The overall installation accuracy is low. The installation center of each component deviates from the center line of the whole machine design, or it has an angle with the design center. The foil strip will be seriously wrinkled and the installation center must be adjusted.
2. The excessive parallelism between the rollers will cause the foil strip to wrinkle. It is necessary to check carefully whether the vertical projection surfaces are not parallel or the horizontal plane is not parallel, and then adjust.
3. The roughness of the surface of the roller is too poor, the surface of the roller is not smooth enough, and the foil is wrinkled when there is obvious processing texture. It needs to be replaced by the manufacturer.
4. The back roller and each roller are stuck with foreign matter or use too much water. Isopropyl alcohol scrubbing requires frequent inspection, timely detection and cleaning, and careful not to damage the roller surface.
5. The foil strip joint is not good. When the tension between the two sides of the foil strip is unbalanced, the pole piece is wrinkled. First adjust the tension adjusting roller under the coating head. After the foil strip is gradually stable, adjust the adjusting roller to the original state.
Zhengzhou EAST IMPORT AND EXPORT co., ltd . ( a goulian group of company) a manufacturer and exporter for all kind of packaging machinery , like bopp tape coating machines, bopp tape slitting machines. Bopp tape core cutter, bopp tape core loader etc