0.3mm dark red and orange PVC rigid sheets can be used for light-proof blister packaging of health supplements. When selecting these sheets, a comprehensive consideration of performance, compliance, and other factors is necessary. Here are some key points:
Light-blocking performance: Compared to transparent PVC, dark red and orange PVC rigid sheets offer some light blocking. Dark red PVC rigid sheets effectively block blue light and ultraviolet rays from the visible spectrum, while orange PVC rigid sheets also block light to some extent. However, the specific light-blocking effect should be referenced from the supplier's data on light transmittance, etc. Generally, the darker the color, the better the light-blocking effect.
Physical properties: PVC rigid sheets used for health supplement packaging should possess good physical properties, such as impact resistance, puncture resistance, and heat-sealing properties. Rigid sheets with good impact resistance better protect the health supplements during transportation and storage, preventing breakage due to collisions; strong puncture resistance prevents the packaging from being punctured by sharp objects, affecting product quality; good heat-sealing properties ensure the blister packaging's airtightness, preventing air and moisture from entering and ensuring the stability of the health supplements.
Chemical Stability: PVC rigid sheets should possess good chemical stability and not react chemically with health supplements to avoid affecting product efficacy and safety. Simultaneously, the rigid sheets should be able to withstand certain temperature and humidity changes, maintaining stable performance under different environmental conditions.
Food-Grade Compliance: Health supplement packaging materials must meet food-grade standards to ensure they are non-toxic and harmless. PVC rigid sheets should use food-grade polyvinyl chloride resin as the main raw material, and added additives should also comply with relevant regulations. The content of vinyl chloride monomer and easily oxidized substances should be below the prescribed limits; for example, the vinyl chloride monomer content should be < 1/1,000,000.
Processing Performance: 0.3mm PVC rigid sheets should have good processing performance, easily forming blister packaging shapes. During the thermoforming process, the rigid sheets should be able to form quickly, and the formed blister shapes should be regular and dimensionally accurate, facilitating subsequent packaging operations, such as heat sealing with materials like aluminum foil.
Supplier Qualifications and Reputation: Selecting suppliers with good qualifications and reputation is crucial. Suppliers should possess relevant production licenses and quality certifications, such as ISO certification. Furthermore, suppliers should be able to provide stable product quality and timely after-sales service to ensure smooth supply and use of packaging materials.
