Metalized Cast Polypropylene Film (Metalized CPP, mCPP) not only has the characteristics of plastic film, but also replaces aluminium foil to a certain extent, playing a role in improving the product grade, and the cost is lower, in the biscuits, leisure food packaging is widely used. However, in the production process, Metalized CPP film often occurs uneven adhesion of the aluminized layer or easy to fall off and other problems, so that the product performance degradation, and even serious and even affect the quality of the contents of the package.
Reasons for uneven adhesion or easy peeling of the aluminised layer of Metalized Cast Polypropylene Film (Metalized CPP, mCPP) may include:
1. Inappropriate choice of resin: If the polypropylene resin used is not suitable for the aluminium plating process, insufficient adhesion may result. A polypropylene resin suitable for aluminising should be selected.
2. Inappropriate use of additives: Certain additives may affect the adhesion between the aluminised layer and the polypropylene substrate. For example, slip agents, antistatic agents, etc. may migrate to the surface and affect the adhesion. additives in the CPP substrate (amide low molecular weight slip agents) migrate to the aluminium plating processing surface and collect between the aluminium plating processing surface of the CPP film and the aluminium plating layer, reducing the adhesion of the aluminium plating layer on the CPP substrate, thus making the aluminium plating layer more susceptible to transferring or peeling off etc.
3. Inadequate surface treatment: Prior to aluminising, the surface of the polypropylene film needs to be properly treated, e.g. corona treatment, to increase surface energy and adhesion. Inadequate surface treatment may result in uneven adhesion.
4. Inadequate post-treatment: After aluminising, the film may require further treatment, such as curing, to ensure the stability of the aluminised layer. If post-treatment is not done properly, it may result in a loss of adhesion.
Solving these problems usually requires optimising the production process, choosing the right materials and additives, and ensuring good maintenance of the production equipment.
SILIKE non-migratory super slip additives, better slip agent for Metalize CPP films.
SILIKE non-Blooming slip agent SF205 is especially suitable for polypropylene cast film and BOPP film. In order to provide good anti-blocking smoothening performance, it should be directly added to the surface layer of the film. The product only contains the smooth component and can be used independently with the anti-blocking agent.
The benefits of SILIKE non-precipitation slip agent masterbatch SF205:
1. Applied to PP film, it can significantly improve the anti-blocking and smoothness of the film and avoid the adhesion during the film production. SILIKE non-Blooming slip agent SF205 can greatly reduce the dynamic and static friction coefficient of the film surface.
2. Under extremely harsh conditions such as high temperature, due to the particularity of polysiloxane structure, the film will keep a stable long-term smoothness.
3. SILIKE Non-Migratory Slip Additives SF205 can improve the stripping performance of the release film, reduce the stripping force and reduce the stripping residue.
4. SILIKE non-Blooming slip agent SF205 can effectively solve the “powder out” phenomenon of film products.
5. In the high temperature environment, it can still maintain a low friction coefficient, SILIKE non-precipitation slip agent masterbatch SF205 can be applied to high-speed pack cigarette film that need to have good hot and smooth performance.
6. Due to the smoothing agent component contains silicone chain segments, SILIKE non-Blooming slip agent SF205 has good processing lubricity, and can improve processing efficiency and also improve the production performance during the the production process.
Notes: SILIKE non-precipitation slip agent masterbatch SF205 has good processing performance, therefore, in the early processing it may clean out of leftover material or inpurity from the equipment, and result in the film crystal point increasing phenomenon, but after the production becomes stable, the film performance is not affected.
If you need high-performance film slip agents, contact SILIKE. We have extensive experience with cast and blown films and have provided effective processing solutions for many film packaging manufacturers.
Contact us Tel: +86-28-83625089 or via email: amy.wang@silike.cn.
website: www.siliketech.com to learn more.
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