PVC shrink Bag Heat-sealing Film
Although PVC heat-seal shrink bags, shrink sleeves, and shrink tubes vary in form, they all rely on the "stable performance of their 70μm PVC substrate" to become practical players in the shrink packaging field. They not only meet the "sealing and freshness-locking" requirements of food packaging, but also achieve "aesthetically pleasing fit" for product labels, and provide "protective insulation" in industrial scenarios.
- top leader plastic
- China
- 15 business days
- 1500 tons/month
- Information
In product packaging and protection, shrinkage is a key requirement for achieving a tight fit, defined protection, and enhanced aesthetics. From beverage bottle labels to electronic product protection, materials must be heated to tightly wrap the object. 70μm PVC heat-seal shrink bags, sleeves, and tubes, with their core advantages of precise thickness, stable shrinkage, and heat sealability, have become a popular choice in the shrink packaging industry. They meet the packaging needs of food and daily necessities, as well as industrial product protection.
First, a brief explanation: All three types of shrink films share a core 70μm PVC shrink film substrate.
All three products utilize a 70μm thick PVC (polyvinyl chloride) shrink film substrate, differing only in form and processing compatibility. However, their core properties (shrinkage, heat sealability, and transparency) remain the same. The 70μm thickness offers a balance between flexibility and protection, making it a popular choice for cost-effective and high-performance packaging. High Shrinkage: PVC material can shrink 50%-60% laterally, and its 70μm thickness ensures uniform force during shrinkage. After heating (120-150°C), it can quickly and tightly wrap objects without uneven shrinkage or wrinkling. For example, shrink sleeves applied to beverage bottles can be perfectly adhered to the bottle after heating, without bubbles or wrinkles, enhancing the aesthetics of the label.
Resistant to Springback After Forming: After shrinking and cooling, PVC maintains strong shape stability and resists springback due to temperature fluctuations (such as room temperature storage and transportation), ensuring that the packaging maintains a tight fit for a long time. For example, shrink-wrapped food bags can be stacked and stored without springback causing the seal to loosen.
Excellent Printing Compatibility (Suitable for Bags/Sleeves): PVC film's smooth surface allows for direct printing (both gravure and flexographic) without pre-treatment, ensuring uniform ink adhesion and vibrant colors. For example, shrink sleeves for beverage bottles can be printed with brand logos and product information, while shrink bags for snacks can be printed with designs to enhance product recognition. PVC Shrink Sleeves: For decoration and wrapping, focusing on bottles and cans and overall wrapping.
Bottle and can labels: For beverage bottles (e.g., cola, juice), cosmetic bottles (e.g., toner, lotion), and health supplement bottles – Shrink sleeves replace traditional paper labels. They are waterproof and scratch-resistant (no labels will peel or blur due to water or friction), and can be printed with 360° wraparound graphics, enhancing the product's appearance.
Although PVC heat-seal shrink bags, shrink sleeves, and shrink tubes vary in form, they all rely on the "stable performance of their 70μm PVC substrate" to become practical players in the shrink packaging field. They not only meet the "sealing and freshness-locking" requirements of food packaging, but also achieve "aesthetically pleasing fit" for product labels, and provide "protective insulation" in industrial scenarios.
