28mm coloful plastic water/soda bottle caps for sale
Colors:According to your request
Size:Customized Size
Use: Bottles
Material: Plastic
Classification and Overview of Materials Used in Anti-Theft Plastic Bottle Caps
| 1. Polyethylene (PE) - Types: Mainly HDPE (High-Density Polyethylene) and LDPE (Low-Density Polyethylene). - Characteristics: - Good chemical resistance and impact strength. - HDPE offers higher rigidity, while LDPE provides better flexibility. - Cost-effective and widely used for water and beverage bottles. - Applications: Common in milk jugs, water bottles, and non-carbonated drink caps. | 2. Polypropylene (PP) - Characteristics: - Excellent heat resistance (suitable for hot-fill liquids). - Good fatigue resistance, making it ideal for twist-off caps. - Higher rigidity than PE but less flexible. - Applications: Widely used in juice bottles, condiment caps, and pharmaceutical packaging. |
3. Polyethylene Terephthalate (PET) - Characteristics: - High clarity and good barrier properties against CO₂. - Lightweight but less impact-resistant than PE or PP. - Applications: Often used for carbonated beverage caps due to its gas barrier performance. | 4. Other Specialty Materials - Polystyrene (PS): Occasionally used for rigid caps but less common due to brittleness. - Biodegradable Plastics (PLA, PHA): Emerging in eco-friendly packaging but limited in anti-theft cap applications due to cost and performance constraints. |
Key Considerations for Material Selection: - Barrier Properties (O₂/CO₂ resistance for beverages). - Mechanical Strength (Impact resistance, torque resistance). - Processing Compatibility (Injection molding efficiency). - Sustainability (Recyclability or bio-based alternatives). | |
Conclusion: HDPE and PP dominate the anti-theft cap market due to their balance of performance and cost, while PET is preferred for carbonated drinks. Emerging biodegradable materials face challenges but align with green packaging trends. | |
Tamper evident cap is specifically designed for essential oil glass bottles with an 18 DIN neck finish. It is designed for the euro dropper bottle for essential oil perfume packing.
Airtightness, which protects the contents, which is the basic function of the bottle cap;
Sealing structure: no gasket cover from inside to top to there are three external sealing structures, which are the sealing ring, the top sealing ring and the side sealing ring.
Cover surface: full molding, complete structure, no material shortage, no obvious damage, burrs and deformation;
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