Views: 0 Author: Eva Publish Time: 2025-08-04 Origin: GUANGDONG YINGHUI NEW MATERIAL TECHNOLOGY CO., LTD.
Self-adhesive stickers, as the core carrier in the modern packaging and labeling field, have established a complete ecosystem covering industrial manufacturing, consumer retail, logistics transportation, etc. with their diversified material systems, advanced printing techniques and extensive application scenarios. Their core technology system focuses on material innovation, adhesive research and development, printing process upgrading and green manufacturing, forming solutions that are both functional and sustainable.
The substrate system of self-adhesive stickers includes three major categories: polymer films, paper, and special materials. Biaxially Oriented Polypropylene (BOPP) achieves a tensile strength of ≥120 MPa in the longitudinal direction and ≥200 MPa in the transverse direction by orienting the molecular chains. Combined with a 3-5 nm vacuum aluminum coating, it can reduce the oxygen permeability to ≤0.5 cc/(m²·24h·atm), significantly extending the shelf life of food. Polyethylene Terephthalate (PET) matte silver paper, with its high-temperature resistance (150°C) and water and oil resistance (resistant to alcohol wiping 50 times without color fading), has become the preferred material for electronic component labels. Among paper-based materials, coated paper achieves high-resolution printing (1200 dpi) with a smooth surface (roughness ≤ 1.0 μm), but its waterproof performance needs to be enhanced through coating; mirror-coated coated paper enhances the texture of cosmetic product labels with a glossiness of ≥80 GU. Special materials such as fragile paper achieve a non-removable anti-counterfeiting function by designing a breaking strength far lower than the adhesive bonding force, and are widely used in automotive electrical warranty labels.
Acrylic-based adhesives dominate the market. For instance, 3M™ GPT-020F has a temperature resistance range of -40°C to 190°C and a peel strength of 13N/cm, making it suitable for high-temperature industrial environments. Bio-based adhesives are represented by starch from cassava grafted with acrylic acid, with a biodegradation rate exceeding 60% and a cost reduction of 15%, meeting FDA food contact standards. The medical field adopts medical UV adhesives certified by ISO 10993, such as the Aventk 32001 series, achieving rapid adhesion for medical devices (curing time ≤ 1 second) without irritation. Removable adhesives such as tesa® 88648 double-sided non-woven fabric tape achieve high adhesion (peel force ≤ 1.5N/25mm) and a balance of no trace removal on metal and plastic substrates.
Printing technology is showing diversified development: UV ink cures on the BOPP surface in ≤ 1 second, with an ink layer thickness of 1.2 - 1.5 μm. After 500 friction tests, the color difference value ΔE is less than 3. Combined with HP Indigo 6900, it enables variable data printing. Water-based ink reduces VOC emissions by 90%, and requires a coupling agent of silane to enhance adhesion, suitable for food packaging. Cold foil stamping technology can achieve high-speed transfer at 150m/min without heating, reducing costs by 30% and enabling a three-dimensional raised effect through inkjet control of the glue amount. Laser die-cutting technology can handle irregular labels with an accuracy of ±0.05mm and edge burrs of ≤ 0.02mm, but be aware that thermal cutting may cause the material edges to turn yellow. Digital die-cutting uses craft blades to achieve low-cost proofing at a speed of 5-8m/min, suitable for small-batch personalized orders.
In food packaging, metallized BOPP film (aluminum layer 3nm) combined with conductive adhesive (volume resistivity < 10⁻³Ω·cm) meets the requirement of electronic components for 260℃ reflow soldering; dairy product labels use 38-60μm white milk film, which is resistant to low temperatures down to -20℃ and is suitable for removable adhesives for easy replacement. In the cosmetics industry, bright silver BOPP film (luster ≥ 80GU) with local UV gloss enhancement improves the texture of cosmetic labels, while PVC self-adhesive tape, thanks to its chemical corrosion resistance (resistant to alcohol and grease), becomes the mainstream choice for personal care products. In the logistics field, 48μm BOPP sealing tape has initial adhesion ≥ 14 steel balls and peel strength ≥ 8N/cm, which is suitable for automated sorting systems. In the medical field, water-soluble adhesives (such as copperplate paper + PE film combination) are used for medical labels to meet the requirements of repeated disinfection of medical devices; fragile paper labels use fracture anti-counterfeiting features to prevent drug packaging from being tampered with.
Integrate intelligent tags with temperature and humidity sensors and NFC chips to monitor the food transportation environment in real time. Combine blockchain technology to achieve full-process traceability. Nanocoating technology controls the surface roughness of BOPP to be within 0.1-0.3 μm, supporting ultra-fine graphic printing (with a resolution of 2400 dpi). Combine 3D printing technology with digital cold stamping to create three-dimensional structures on the label surface, enhancing anti-counterfeiting and visual effects. Collaborative research on bio-based adhesives and degradable PP substrates aims to reduce the carbon footprint by more than 40% throughout the entire life cycle. With the breakthrough in die-cutting speed exceeding 200m/min and the application of AI visual detection technology, self-adhesive stickers will continue to break through performance boundaries in the high-end packaging and intelligent labeling fields, becoming the core carrier of sustainable packaging solutions.
