Dallas Plastics has successfully been certified ISO 9001:2015 for both Mesquite, TX and Longview, TX sites.
Dallas Plastics has successfully been certified ISO 9001:2015 for both Mesquite, TX and Longview, TX sites.
Corona surface treatment is a process utilized to modify and enhance the surface properties of materials, primarily polymers, to improve their adhesion characteristics. This treatment involves the application of a high-frequency, high-voltage corona discharge to the surface, which generates ionized air surrounding the material.
Working with a blown film manufacturer that offers corona surface treatments ensures that the film’s surface is already optimized for downstream processes like printing, coating, and lamination, which can lead to significant cost and time savings by eliminating the need for additional surface preparation.
This pre-treatment guarantees better adhesion and enhances the quality and durability of the final product, reducing the risk of defects and rework.
Improvement in the adhesion properties of a material crucial for processes like printing, coating, and laminating where inks, adhesives, or coatings need to firmly adhere to surfaces.
Suitable for use on films, sheets, and more, making it a versatile tool across various industries, including packaging, automotive, electronics, and textiles.
Enhances surface cleanliness by effectively removing contaminants, oils, and other impurities from the surface of materials.
Significantly enhances printability by increasing the surface energy of materials, allowing inks and dyes to adhere more effectively.
Contributes to improved surface uniformity by altering the surface structure at a microscopic level. This altered surface promotes a uniform distribution of inks, coatings, or adhesives across the material, reducing defects such as streaks or blotches.
Can reduce or eliminate the need for primers or additional chemical adhesion promoters. This reduction in additional materials leads to cost savings in the manufacturing process, both in terms of material costs and labor.
The process begins with a detailed consultation to understand the customer's specific needs, including the desired properties of the film, such as thickness, width, and any specific surface characteristics required.
During this phase, customers work closely with color specialists to select or create the exact hue and level of transparency required. This may involve color matching using Pantone numbers or physical samples.
After treatment, the film undergoes rigorous quality assurance checks to ensure it meets the customer's specifications and industry standards. The manufacturer ensures that the surface energy and adhesion properties are achieved as per the requirements.
Corona treatment is a surface modification technique used to enhance the adhesion properties of materials, particularly non-polar polymers like polyethylene and polypropylene. This process involves exposing the material’s surface to a corona discharge, which is a type of electrical discharge caused by ionization of a fluid surrounding a conductor that is electrically charged.
The low surface energy of certain materials often results in poor adhesion when it comes to inks, glues, and coatings, which naturally have much higher surface energies. To achieve optimal adhesion, it’s essential that the surface energy of the base material matches or surpasses the surface energy of the applied substance, like ink or adhesive. To raise its surface energy, the material is exposed to an electronic corona discharge. When voltage is applied, surrounding oxygen molecules are broken down into atoms. These atoms can then bond with the molecular ends in the material being treated, chemically activating its surface. This increases surface tension, making the surface more receptive and ready for subsequent processing.
The addition of color pigments can impact certain film properties. For example, darker colors often provide better UV resistance as they absorb more UV rays, whereas lighter or translucent colors may require additional UV stabilizers. Some pigments can also influence heat absorption, potentially affecting heat sensitivity.
By providing enhanced adhesion properties, corona treatment can reduce the need for additional primers or bonding agents, streamlining production processes and potentially lowering costs.
Corona treatment primarily affects the surface properties without altering the overall appearance or mechanical properties of the material, making it a preferred method for maintaining the original characteristics while enhancing surface performance.
While corona treatment effectively alters the surface energy, the effect can diminish over time due to factors like storage conditions and environmental exposure. It is generally recommended to use treated materials within a certain timeframe for optimal results.
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