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Definition of Varnish Film
A Varnish film is a functional film material used for surface treatment of printed products. It is adhered to the surface layer of the printed product through coating, compounding, or heat pressing, forming a transparent or special-effect film. Its core function is to protect the printed content, enhance visual effects, and give the printed product specific physical properties. It is widely used in packaging, publications, advertising products, etc.
Main Characteristics of Varnish Films
1. Optical Properties
High transparency: High transparency of high-quality coating films does not block the colors of the printed product. Different gloss effects such as glossy, matte, and pearlescent can be achieved through processes to enhance visual expressiveness.
Gloss adjustability:
Glossy film: Smooth surface, strong light reflection, making patterns bright and eye-catching.
Matte film: Soft surface, no reflection, creating an upscale texture.
Special gloss films: Such as pearlescent film, frosted film, etc., form unique visual effects through texture design.
2. Physical Protection Properties
Waterproof and moisture-proof: Blocks water penetration, prevents paper deformation and ink smudging, suitable for packaging in humid environments (such as food, daily necessities).
Durable and scratch-resistant: The film layer has high hardness (such as above 2H), resisting friction and scratching, protecting book covers, promotional leaflets, etc., from fading over long-term use.
Anti-tear and tensile strength: Some materials (such as BOPP film) have high tensile strength, enhancing the toughness of printed products and preventing damage during transportation.
3. Chemical Stability
Weather resistance: Adds UV-resistant and antioxidant components to reduce ink fading in outdoor advertisements and long-term display packaging.
Chemical resistance: Resists mild acids, alkalis, or organic solvents (such as food packaging contact with oil stains), maintaining stable performance.
4. Process Adaptability
Adhesion compatibility: Firmly bonded to paper, plastic, metal and other substrates through heat pressing or glue, with no bubbles or delamination.
Processing convenience: Compatible with secondary processing such as die-cutting, embossing, and hot stamping, with the film layer not breaking due to mechanical operation.
5. Functional Expansion Characteristics
Special Function Additions: Can have anti-static (for electronic packaging), anti-fog (for fresh food packaging), antibacterial functions, etc.
Environmental Friendliness: Water-soluble, biodegradable varnish films, in line with the green packaging trend.
Definition of Varnish Film
A Varnish film is a functional film material used for surface treatment of printed products. It is adhered to the surface layer of the printed product through coating, compounding, or heat pressing, forming a transparent or special-effect film. Its core function is to protect the printed content, enhance visual effects, and give the printed product specific physical properties. It is widely used in packaging, publications, advertising products, etc.
Main Characteristics of Varnish Films
1. Optical Properties
High transparency: High transparency of high-quality coating films does not block the colors of the printed product. Different gloss effects such as glossy, matte, and pearlescent can be achieved through processes to enhance visual expressiveness.
Gloss adjustability:
Glossy film: Smooth surface, strong light reflection, making patterns bright and eye-catching.
Matte film: Soft surface, no reflection, creating an upscale texture.
Special gloss films: Such as pearlescent film, frosted film, etc., form unique visual effects through texture design.
2. Physical Protection Properties
Waterproof and moisture-proof: Blocks water penetration, prevents paper deformation and ink smudging, suitable for packaging in humid environments (such as food, daily necessities).
Durable and scratch-resistant: The film layer has high hardness (such as above 2H), resisting friction and scratching, protecting book covers, promotional leaflets, etc., from fading over long-term use.
Anti-tear and tensile strength: Some materials (such as BOPP film) have high tensile strength, enhancing the toughness of printed products and preventing damage during transportation.
3. Chemical Stability
Weather resistance: Adds UV-resistant and antioxidant components to reduce ink fading in outdoor advertisements and long-term display packaging.
Chemical resistance: Resists mild acids, alkalis, or organic solvents (such as food packaging contact with oil stains), maintaining stable performance.
4. Process Adaptability
Adhesion compatibility: Firmly bonded to paper, plastic, metal and other substrates through heat pressing or glue, with no bubbles or delamination.
Processing convenience: Compatible with secondary processing such as die-cutting, embossing, and hot stamping, with the film layer not breaking due to mechanical operation.
5. Functional Expansion Characteristics
Special Function Additions: Can have anti-static (for electronic packaging), anti-fog (for fresh food packaging), antibacterial functions, etc.
Environmental Friendliness: Water-soluble, biodegradable varnish films, in line with the green packaging trend.
