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I. Water-based Varnish

1. Basic Composition

• Main Ingredients: Water as solvent, acrylic resin, additives (e.g., leveling agents, defoamers), and trace ethanol.

• Environmental Protection: Free of or extremely low in VOCs (Volatile Organic Compounds), compliant with standards (e.g., EU REACH, FDA).

2. Characteristics

• Eco-safety: Non-toxic and odorless, suitable for food packaging, children's products, and other safety-critical fields.

• Drying Method: Natural volatilization or hot-air drying, requiring longer time (typically minutes to tens of minutes).

• Adhesion: Strong adhesion to porous materials like paper and cardboard; pre-treatment needed for non-absorbent materials (e.g., plastics).

• Resistance: Moderate abrasion and scratch resistance, medium water and chemical resistance.

3. Application Scenarios

• Paper packaging: Gift boxes, book covers, shopping bags, etc.

• Food packaging: Prints in direct contact with food (e.g., fast-food boxes, beverage cups).

• Matte/gloss effects: Adjustable gloss levels via formula modification.

II. UV Varnish

1. Basic Composition

• Main Ingredients: Acrylate prepolymers, reactive diluents (e.g., monomers), photoinitiators (absorb UV light to trigger curing).

• Solvent-free: 100% solid content, no volatile residues after curing.

2. Characteristics

• Curing Method: Instant curing (seconds) via UV light irradiation.

• Performance: High gloss, high hardness (up to 3H+), excellent abrasion and chemical resistance.

• Adaptability: Suitable for various substrates including paper, plastics, and metals.

3. Application Scenarios

• High-end packaging: Cosmetic boxes, electronic product packaging, cigarette boxes, etc.

• Special effects: Compatible with hot stamping, embossing, etc., for local varnishing or 3D effects.

• Non-absorbent materials: Plastic prints like PVC, PET, etc.

III. Selection Tips

• Eco-priority: Choose water-based varnish (especially for food/drug packaging).

• Efficiency & Performance: UV varnish for high-speed printing and high abrasion-resistance needs.

• Special Effects: UV varnish enables local varnishing, 3D effects, etc.

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