The functions of plastic anti-theft bottle caps...
PVC heat shrink bottle cap, also known as polyvinyl chloride heat shrink bottle cap, is a packaging sealing component made using the heat shrink properties of PVC (polyvinyl chloride) material.
Working principle: It is usually pre made into a "sleeve" shaped lid with a size slightly larger than the diameter of the bottle mouth. When in use, place it over the bottle mouth and heat it up through a hot air channel (heat shrink furnace or hot air gun). After being heated, PVC material will quickly shrink and tightly wrap around the bottle mouth and top of the bottle body, forming a strong seal and anti-counterfeiting barrier.
Appearance: Usually transparent, but can also be printed in various colors, logos, and patterns according to brand requirements, with both decorative and anti-counterfeiting functions.
Main features
1. Excellent shrinkage: PVC material has a high shrinkage rate (up to 50% or more) after heating, and can tightly fit various shapes of bottle mouths, including irregular shapes.
2. Good sealing: After shrinking, it tightly adheres to the bottle body, effectively preventing dust and moisture from entering, and providing a certain degree of sealing protection for the contents, preventing moisture and leakage.
3. Powerful anti-counterfeiting function: This is one of its most core applications. Once the packaging is shrunk, in order to open the bottle cap, it must be destroyed (torn apart). The characteristic of one-time destruction makes it an effective anti-counterfeiting measure, and consumers can easily identify whether the product has been opened.
4. Decoration and identification: High quality color printing can be carried out to enhance the appearance grade of the product, while also carrying important information such as brand information, product name, production date, anti-counterfeiting query QR code, etc.
5. Strong adaptability: Suitable for bottle bodies made of various materials such as glass, plastic (PET, HDPE, etc.), ceramics, etc.
6. High cost-effectiveness: Compared to other complex anti-counterfeiting packaging technologies, PVC heat shrink bottle caps have lower production costs and higher cost-effectiveness.