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Copperplate non-woven adhesive labels are made from copperplate paper (Art Paper) as the base material, with pressure-sensitive adhesive coated on the back and a high-smooth coating applied on the surface for processing. Their structure typically includes: the copperplate paper base (original paper basis weight 80-300g/m²), a white coating layer (calcium carbonate or kaolin and adhesive), a printing ink layer (optional), a pressure-sensitive adhesive layer (acrylic or rubber adhesive), and a release paper (silicone oil paper). The high-gloss surface of copperplate paper makes it the preferred choice for labels with fine printing effects and high color reproduction, widely used in scenarios requiring exquisite graphic display, such as product labels, food packaging, cosmetic bottle labels, etc.
Core characteristics of copperplate non-woven adhesive labels:
1. Printing and appearance performance
High smoothness and glossiness:
The coating layer thickness is approximately 5-10μm, with a surface roughness Ra < 1μm (ordinary paper Ra > 5μm), uniform ink absorption, dot reproduction accuracy of 175-200 lines/inch, suitable for full-color printing (such as high-definition product images on cosmetic labels).
It can be divided into high-gloss copperplate paper (glossiness ≥ 85%) and matte copperplate paper (glossiness ≤ 30%), meeting different design requirements (such as matte texture labels for high-end skincare products).
Oil ink compatibility:
Suitable for offset printing, flexographic printing, gravure printing and digital printing. The oil ink adhesion strength ≥ 3 grades (GB/T 7700 test), UV ink surface hardness reaches 3H after drying, and anti-abrasion (such as long-term wear resistance requirements for supermarket product labels).
2. Physical and processing performance
Balance of stiffness and flexibility:
80g/m² copperplate paper bending stiffness is approximately 0.2mN·m, suitable for flat label application; 200g/m² and above have high stiffness, suitable for self-standing bag labels or card-style labels (such as clothing tags).
Tear resistance ≥ 100 times (MIT test), slight folding does not break, suitable for curved bottle bodies (such as round cans, beverage bottles).
Weather resistance and environmental resistance:
Regular type: temperature range -10℃ to 80℃, humidity ≤ 80% RH, suitable for indoor normal temperature scenarios (such as snack packaging);
Special treatment type: after waterproof coating treatment, it can withstand short-term water immersion (such as fruit labels not peeling when encountering condensation water), but will delaminate when soaked in water for a long time.
3. Adhesive performance
Type of pressure-sensitive adhesive and adhesion:
Acrylic adhesive: excellent weather resistance, holding power ≥ 24 hours (GB/T 4851), suitable for outdoor or long-term use (such as home appliance labels);
Rubber-based adhesive: high initial adhesion (ball initial adhesion force ≥ 15 steel balls), suitable for rough surfaces (such as corrugated cardboard), peel force 0.8-2.0N/25mm (GB/T 2792).
Application adaptability:
Customizable removable glue (tear-off without residue, such as promotional labels) or permanent glue (strong adhesion, such as industrial equipment nameplates);
Some models support low-temperature adhesion (-5℃ still can be adhered), suitable for cold chain label scenarios.
4. Environmental and cost characteristics
Recyclability: The copperplate paper base can be included in the waste paper recycling system, but products containing PE laminated film or solvent-based glue need special treatment; water-based copperplate paper labels are gradually becoming popular, reducing VOC emissions.
Cost advantage: Compared with aluminum foil, PET and other materials, copperplate non-woven adhesive labels have a cost of 30%-50% lower than those, with high cost performance, suitable for batch printing (such as fast-moving consumer goods labels).
Copperplate non-woven adhesive labels are made from copperplate paper (Art Paper) as the base material, with pressure-sensitive adhesive coated on the back and a high-smooth coating applied on the surface for processing. Their structure typically includes: the copperplate paper base (original paper basis weight 80-300g/m²), a white coating layer (calcium carbonate or kaolin and adhesive), a printing ink layer (optional), a pressure-sensitive adhesive layer (acrylic or rubber adhesive), and a release paper (silicone oil paper). The high-gloss surface of copperplate paper makes it the preferred choice for labels with fine printing effects and high color reproduction, widely used in scenarios requiring exquisite graphic display, such as product labels, food packaging, cosmetic bottle labels, etc.
Core characteristics of copperplate non-woven adhesive labels:
1. Printing and appearance performance
High smoothness and glossiness:
The coating layer thickness is approximately 5-10μm, with a surface roughness Ra < 1μm (ordinary paper Ra > 5μm), uniform ink absorption, dot reproduction accuracy of 175-200 lines/inch, suitable for full-color printing (such as high-definition product images on cosmetic labels).
It can be divided into high-gloss copperplate paper (glossiness ≥ 85%) and matte copperplate paper (glossiness ≤ 30%), meeting different design requirements (such as matte texture labels for high-end skincare products).
Oil ink compatibility:
Suitable for offset printing, flexographic printing, gravure printing and digital printing. The oil ink adhesion strength ≥ 3 grades (GB/T 7700 test), UV ink surface hardness reaches 3H after drying, and anti-abrasion (such as long-term wear resistance requirements for supermarket product labels).
2. Physical and processing performance
Balance of stiffness and flexibility:
80g/m² copperplate paper bending stiffness is approximately 0.2mN·m, suitable for flat label application; 200g/m² and above have high stiffness, suitable for self-standing bag labels or card-style labels (such as clothing tags).
Tear resistance ≥ 100 times (MIT test), slight folding does not break, suitable for curved bottle bodies (such as round cans, beverage bottles).
Weather resistance and environmental resistance:
Regular type: temperature range -10℃ to 80℃, humidity ≤ 80% RH, suitable for indoor normal temperature scenarios (such as snack packaging);
Special treatment type: after waterproof coating treatment, it can withstand short-term water immersion (such as fruit labels not peeling when encountering condensation water), but will delaminate when soaked in water for a long time.
3. Adhesive performance
Type of pressure-sensitive adhesive and adhesion:
Acrylic adhesive: excellent weather resistance, holding power ≥ 24 hours (GB/T 4851), suitable for outdoor or long-term use (such as home appliance labels);
Rubber-based adhesive: high initial adhesion (ball initial adhesion force ≥ 15 steel balls), suitable for rough surfaces (such as corrugated cardboard), peel force 0.8-2.0N/25mm (GB/T 2792).
Application adaptability:
Customizable removable glue (tear-off without residue, such as promotional labels) or permanent glue (strong adhesion, such as industrial equipment nameplates);
Some models support low-temperature adhesion (-5℃ still can be adhered), suitable for cold chain label scenarios.
4. Environmental and cost characteristics
Recyclability: The copperplate paper base can be included in the waste paper recycling system, but products containing PE laminated film or solvent-based glue need special treatment; water-based copperplate paper labels are gradually becoming popular, reducing VOC emissions.
Cost advantage: Compared with aluminum foil, PET and other materials, copperplate non-woven adhesive labels have a cost of 30%-50% lower than those, with high cost performance, suitable for batch printing (such as fast-moving consumer goods labels).
