Product Specification

Multi-Cavity Screw Cap Injection Mold for Plastic Bottle Closures

Product Overview

The Multi-Cavity Screw Cap Injection Mold is engineered for high-volume manufacturing of threaded plastic bottle closures used across packaging industries. Screw caps require precise thread forming and stable demolding performance to ensure smooth opening and reliable sealing on bottles.

This injection mold is designed with a multi-cavity layout and precision threaded core system, enabling efficient mass production while maintaining consistent cap quality across every cavity. The mold structure is optimized to support fast injection cycles, balanced plastic flow, and accurate thread formation.

Used widely in beverage, food, cosmetic, and household packaging production, this mold provides a reliable solution for manufacturers seeking high productivity, long mold lifespan, and stable closure performance.

Product Description

The screw cap injection mold is designed to produce threaded plastic closures that secure tightly onto bottle necks through internal thread engagement. This requires high-precision cavity design to ensure smooth cap rotation and leak-proof sealing.

The mold integrates precision core inserts, balanced runner systems, and optimized cooling channels to maintain uniform molding conditions during production.

Key design features include:

• Precision thread forming cores

• Balanced multi-cavity runner design

• Efficient cooling channel system

• Durable hardened mold steel components

• Smooth cap demolding structure

The mold can be configured with different cavity numbers depending on production requirements. Multi-cavity molds significantly increase manufacturing efficiency by producing multiple caps in each injection cycle.

Typical configurations include:

• 16 cavity screw cap mold

• 24 cavity screw cap mold

• 32 cavity screw cap mold

• 48 cavity screw cap mold

These molds are suitable for continuous, high-output production environments.

Applications

Screw cap molds are widely used in industries that require reliable threaded bottle closures.

Typical applications include:

Beverage Packaging

• Mineral water bottle caps

• Soft drink bottle closures

• Juice bottle caps

Food Packaging

• Sauce bottle caps

• Cooking oil bottle closures

• Condiment container caps

Cosmetic Packaging

• Shampoo bottle caps

• Lotion bottle closures

• Cosmetic container lids

Household Product Packaging

• Detergent bottle caps

• Cleaning chemical container closures

The mold supports commonly used thermoplastics such as:

• PP (Polypropylene)

• HDPE

• PE

These materials provide excellent durability, flexibility, and chemical resistance for bottle closure applications.

Precision & Manufacturing Capabilities

Our company manufactures high-precision packaging molds using advanced production technologies and strict quality standards.

Manufacturing capabilities include:

• High-precision CNC machining centers

• Wire EDM and sinker EDM machining

• Precision surface grinding and polishing

• Professional heat treatment processes

• High-accuracy thread core machining

• Mold tolerance control up to ±0.005 mm

Each mold undergoes detailed inspection and mold trial testing before shipment to ensure stable production performance.

Advantages for Plastic Closure Manufacturers

Selecting the right mold is critical for achieving stable cap quality and efficient production.

Our screw cap molds provide the following benefits:

High Production Efficiency

Multi-cavity mold structures increase output per injection cycle.

Accurate Thread Formation

Precision core machining ensures consistent cap threading and smooth bottle engagement.

Reliable Sealing Performance

Uniform cap geometry improves sealing reliability for packaged products.

Long Mold Lifespan

Premium mold steels and heat treatment processes extend mold durability.

Stable Continuous Production

Optimized mold structure supports long production runs with minimal downtime.

What We Need for Quotation

To provide an accurate mold quotation and technical solution, please send the following information:

• Bottle cap 3D drawing or product sample

• Cap diameter and thread specification

• Plastic material used (PP / PE / HDPE)

• Required number of mold cavities

• Expected production capacity

• Injection molding machine information (optional)

Our engineering team will evaluate your requirements and recommend the most suitable mold design.

FAQ

What is a screw cap injection mold?

A screw cap injection mold is used to manufacture plastic bottle closures with internal threads that allow the cap to be screwed onto a bottle neck.

What materials are typically used for screw caps?

Common materials include PP and HDPE, which offer durability, flexibility, and chemical resistance.

Can the mold cavity number be customized?

Yes. Mold cavity numbers can be customized according to production capacity and injection machine size.

What is the typical lifespan of a screw cap mold?

With proper maintenance and high-quality mold materials, the mold can support millions of injection cycles.

Do you test molds before delivery?

Yes. All molds undergo trial injection testing and quality inspection before shipment.

Purchasing Inquiry

Request a Quote for Screw Cap Injection Molds

If you are looking for a reliable plastic bottle cap mold manufacturer, contact our team today for a detailed quotation.

Send us your cap drawings, samples, or technical specifications, and we will provide a customized mold solution tailored to your production needs.