Adhesive Materials
Acrylic Pressure-Sensitive Adhesive (PSA)
Adhesion characteristics: Acrylic PSA offers excellent overall performance and is the most commonly used adhesive for shampoo stickers. It has strong initial tack and holding power, bonding instantly upon contact with the shampoo packaging surface, keeping the label fixed securely for a long time without peeling.
Environmental adaptability: It has good water and temperature resistance, making it suitable for the humid and variable environment of bathrooms. Even with frequent water exposure, its adhesion remains stable.
Application scenarios: Suitable for various shampoo bottles made of plastic (e.g., PET, HDPE) or glass. It adheres well to both smooth and slightly textured surfaces and leaves minimal residue when removed, making it ideal for premium shampoo brands that prioritize appearance.
Hot-Melt Pressure-Sensitive Adhesive
Adhesion characteristics: Hot-melt PSA provides high initial tack, quickly securing the label on the packaging. However, its long-term resistance to heat and humidity is weaker than acrylic PSA.
Environmental adaptability: Performs well in normal indoor environments but may lose adhesion or curl at the edges under high-temperature and high-humidity bathroom conditions.
Application scenarios: A cost-effective option for shampoos used in relatively dry environments. Works well on slightly rough plastic surfaces (e.g., frosted HDPE bottles) where surface friction improves bonding.
Rubber-Based Pressure-Sensitive Adhesive
Adhesion characteristics: Generally weaker tack, with poor durability against moisture and weather.
Environmental adaptability: In humid bathrooms, adhesion drops quickly due to moisture, causing labels to peel off. It may also age and discolor over time.
Application scenarios: Not recommended for shampoo stickers unless for short-term use with low adhesion requirements.
Label Substrate Materials
PE (Polyethylene) Self-Adhesive Material
Adhesion performance: PE labels are soft and flexible, adapting well to curved bottle surfaces. This increases the contact area with the bottle, enhancing adhesion. They are compatible with acrylic PSAs for strong bonding.
Other advantages: Water-resistant and moisture-proof, suitable for bathroom environments. Cost-effective with good performance-to-price ratio.
Application scenarios: Widely used for squeeze-type shampoo bottles (e.g., plastic tubes), ensuring a wrinkle-free, smooth fit.
PET (Polyester) Self-Adhesive Material
Adhesion performance: High strength and rigidity with a smooth surface that allows adhesives to spread evenly, ensuring stable and long-lasting adhesion.
Other advantages: Excellent tear resistance, water and oil resistance, and UV protection. Maintains both adhesion and appearance under harsh conditions.
Application scenarios: Ideal for premium shampoos or brands requiring durable, high-quality labels. Commonly used on glass bottles or high-end plastic bottles.
Coated Paper (Glossy Paper) Self-Adhesive Material
Adhesion performance: Adhesion depends largely on the adhesive used. Its smooth surface supports good bonding, but the paper itself lacks water and moisture resistance and may warp in bathroom environments without special treatment.
Other advantages: Excellent printability, delivering sharp, vibrant graphics—ideal for designs requiring high-quality printing.
Application scenarios: Usually laminated or varnished for better durability. Suitable for cost-sensitive shampoo products used in relatively dry environments.
