Product Description
Our factory provides bottle cap injection molding services for liquid packaging brands, container manufacturers, filling plants, and overseas purchasing companies that need stable plastic cap production with practical container-matching experience. A bottle cap is not just a small plastic part. It affects sealing, pouring control, shelf appearance, filling-line efficiency, and the customer's first impression after opening the product. With around 15 years of experience in bottle cap-related development and production, we focus on making bottle cap injection molding more suitable for real packaging applications such as edible oil, tea oil, detergent, chemical liquid containers, and other liquid packaging systems.
Our strength comes from long-term development in liquid container caps, especially double-opening plastic caps and patented cap structures. From prototype testing to mold development and automated production, we pay attention to cap structure, thread matching, sealing performance, venting design, return-flow control, and bulk production consistency. For agents and long-term buyers, reliable bottle cap injection molding means fewer leakage complaints, fewer assembly problems, and stronger confidence when supplying local brands. We can support standard production, OEM processing, and production based on technical drawings or prototypes.
Key Specifications
| Material | PP, PE, and other injection-grade plastic materials |
| Process | Injection molding, mold development, automated production |
| Cap types | Standard caps, double-opening caps, vented caps, return-flow caps |
| Compatible containers | Plastic bottles, glass bottles, metal cans, liquid containers |
| Color | Custom colors available |
| Customization | Based on drawings, samples, or prototypes |
| MOQ | Around 100,000 pieces |
| Custom sample lead time | Around 30-90 days |
| Standard product lead time | Around 30 days |
| Custom product lead time | Around 60 days |
| Monthly capacity | Around 3,000,000 pieces |
Application Areas
Liquid Food Packaging
Used for edible oil, corn oil, tea oil, seasoning liquid, and other food-grade liquid packaging that requires smooth pouring and stable sealing.
Daily Chemical Packaging
Suitable for detergent, cleaning liquid, care liquid, and household chemical products where cap tightness and user convenience matter.
Industrial Liquid Containers
Used for selected chemical liquid containers, metal cans, and plastic packaging systems that require stronger sealing and consistent dimensions.
Packaging Solution Projects
Suitable for packaging factories, overseas distributors, and brand owners that need customized plastic cap supply.
Factory Strength
Dongguan Shun chang plastic Products Co., Ltd is located in Dongguan, Guangdong, with a registered capital of 20 million RMB, a 2,000㎡ facility, and 18 workers. Our core team has been involved in liquid container plastic cap development since 2010 and has built a series of patented cap products from the first generation to the eighth generation. We currently hold 6 bottle cap-related patents, including invention patents, utility model patents, and an appearance design patent.
Our factory uses self-improved automatic production lines that integrate product taking-out, automatic inspection, defective product rejection, combination, and packing. This production foundation helps improve production efficiency and keeps bulk orders more stable in appearance, size, and assembly performance. For overseas buyers, this means more predictable delivery and better quality consistency.
Customization Capability
We support OEM processing and production based on customer technical drawings or prototypes. Customization can include cap size, cap color, thread structure, venting hole design, double-opening structure, return-flow groove, pouring control, and container matching. Before production, we can review the customer's container type and application scenario to reduce unnecessary mold modification later.
Samples can be provided before mass production. If customers provide technical drawings, sample support can be arranged according to the project. If the product requires our factory's own development, sample fees may apply. Custom sample development usually takes 30-90 days depending on structure complexity and automation requirements.
Quality Control
Our factory has a quality monitoring department responsible for product quality control. All products receive 100% inspection before packing, and third-party inspection is accepted. For bottle caps, we focus not only on appearance but also on sealing condition, dimension consistency, assembly smoothness, injection defects, and packaging stability.
If goods arrive damaged or a non-human quality issue occurs, we can handle it through replacement or compensation according to the actual situation. We also provide a 3-year warranty and dedicated after-sales support, giving long-term buyers more confidence in repeat orders.
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