• Date:2024/1/15 16:33:55
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What are they made from? Bottle Caps

Bottle caps

Bottle caps are used for closing or sealing the top opening of a bottle. They are designed to contain the product inside the container without external leaks and ensure that the quality of the product is maintained. Some bottle caps are designed to dispense liquid products like condiments, oils, sauces, etc. They find wide use in food and beverage, FMCG, pharmaceutical and chemical industries.

Types of bottle caps

There are multiple types of plastic bottle caps based on their design. The caps are designed to work with different types of liquids of varying viscosities. It can be a simple screw cap that enables the consumer to pour directly from the bottle to release a specific volume of product through the cap hole fitted with a silicon release valve. There are various models of bottle caps like screw cap, disc top cap, flip top cap, bottle over the cap, twist top cap, push/pull cap, nozzle pull top cap, double button disc top cap, double-twisting locking cap for pharmaceutical products, dosing bottle cap, etc. and custom made to fit each application. The metal caps of bottles are usually crown cork type or threaded type. The jar lids are mostly of lug cap type. Plastic bottle caps are generally used on plastic bottles and metal caps on glass bottles. Some metal caps have a plastic coating on them. The caps may also have brand information printed on them.

Ideal characteristics of bottle caps

The following are the ideal characteristics of a bottle cap. It should have good:

1) Mechanical properties like strength and toughness, elasticity/ flexibility to withstand forces of pressure/impact and durability;

2) Insulation properties like firm sealing and leakproof, resistance to moisture, water vapor, gas, light, odor and heat;

3) Safety characteristics like non-toxicity, corrosion resistance, insect/pest-proof and anti-microbial property,

4) Processing features like suitability to be processed into various products and feasibility for use in automated operations, its suitability for printing, etc.;

5) Other reasons like a wide range of sources, easy availability, low cost, and ease of handling the raw materials.

Materials used for making bottle caps

Bottle caps are mostly made of plastics. They may also be made of metal. The material for the manufacture of bottle caps is chosen based on its usage and type of bottle/container. The properties like strength, flexibility, durability, inertness to liquid compositions and moisture resistance are considered carefully before being chosen for an application.


The plastic caps are usually made of Polyethylene Terephthalate, Polypropylene, Low-Density Polyethylene, High-Density Polyethylene, Polyvinyl Chloride, Polystyrene and Polycarbonate.

Shuanghao is a professional company engaged in the manufacture of plastic bottle caps, located in Taizhou, China, has been committed to the research and development, production, sales of bottle caps. The company has a strong technical force, a group of high-quality engineering, technical and management personnel, and a team of skilled and skilled workers. The company has advanced technology, complete technical state of production equipment, perfect quality inspection and experimental means, and has passed ISO quality system certification.

Water Bottle Sport Caps

Push Pull Cap Features Flip top drink bottle cap:
- Plastic Dispensing Cap
- Smooth or Ribbed finished closure
- PP plastic
- Customizing Color
- Closure size:  24/410 28/410
- Free samples available
- Global supplier with a factory direct price!
cap size: 30/25 & 28/25 & 38/25 sport cap
Cap color can be customized
cap type: flip top
cap use: drink bottle, oil bottle and so on.

Quality Control

1. Before the order to be confirmed, we should check the material & color of pump sprayer for which should be strictly.
2.We will trace the different phase of the production from the beginning to end.
3. Every pump sprayer quality checked & cleaned before packing by fully automatic machine.
4. Before delivery clients could arrange one QC to check the quality.
5. We will try our best to help clients when problem occurred.

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