Custom Threaded Mold Inserts for Cosmetic Closures | Precision Wire EDM Tooling

Product Overview

Cosmetic cap plastic mould parts with threaded core structures are precision components used in injection molds where thread accuracy and surface consistency are critical. These thread core inserts are manufactured using wire EDM machining to achieve complex geometries and stable dimensional control. Senlan Precision supplies all cosmetic cap mold parts under a built-to-print OEM model, strictly following customer drawings and technical specifications.

Key Features & Advantages

• Thread core structures manufactured by wire EDM machining for high accuracy

• Suitable for cosmetic cap molds with complex internal thread profiles

• Stable dimensional control for consistent molding performance

• Good surface integrity after EDM and secondary finishing

• Compatible with multi-cavity cosmetic cap molds

• Fully customized production based on customer drawings (OEM / Built-to-Print)

Applications / Industry Use

• Cosmetic bottle caps and closures

• Packaging caps requiring internal thread precision

• Injection molds for personal care and packaging components

• High-cavity cosmetic cap molds

• Plastic packaging parts with rotational or threaded structures

Mold Structure & Design Description

Thread core inserts are key functional elements in cosmetic cap injection molds, forming internal threads and ensuring smooth demolding. For cosmetic applications, thread accuracy and surface stability directly affect assembly performance and appearance consistency. Wire EDM machining allows precise formation of fine thread geometries that are difficult to achieve with conventional cutting, making it suitable for complex thread core designs.

Manufacturing Capability & CNC Machining

Senlan Precision produces cosmetic cap mold parts using precision CNC machining combined with wire EDM processes. Manufacturing is supported by high-accuracy machining centers from MAKINO and precision turning equipment from HARDINGE.

Manufacturing processes include:

• CNC turning and milling

• Wire EDM machining for thread profiles

• Precision grinding and secondary finishing

• Dimensional and profile inspection

• Process control for repeatable quality

Custom Development / OEM Cooperation Process

1. Customer provides drawings or 3D models

2. Technical review of thread geometry and tolerances

3. EDM and machining process planning

4. Precision manufacturing and finishing

5. Dimensional inspection and quality verification

6. Export packaging and delivery

All parts are supplied strictly under a Built-to-Print OEM manufacturing process.

Quality Control & Export Experience

• Incoming material inspection and traceability

• In-process dimensional and thread profile checks

• Final inspection before shipment

• Stable quality management procedures for export orders

• Experience supplying precision mold parts to international customers

Related Products

• Thread core inserts for injection molds

• Precision mold core pins and sleeves

• Cavity inserts for cosmetic and packaging molds

• Multi-cavity mold components

• Customized non-standard plastic mold parts

FAQ – Technical & Purchasing

Q1: Why is wire EDM used for thread core machining?
Wire EDM allows precise machining of complex thread geometries with stable dimensional accuracy and minimal mechanical stress.

Q2: Are these parts suitable for multi-cavity cosmetic cap molds?
Yes. Dimensional consistency and repeatability make them suitable for high-cavity cosmetic cap molds.

Q3: Can you manufacture according to our drawings only?
Yes. All products are manufactured strictly according to customer drawings and specifications.

Q4: Do you offer surface finishing after EDM?
Yes. Secondary finishing processes can be applied based on mold and application requirements.

Request a Quote

Please send your drawings, material requirements, tolerance specifications, and estimated order quantity.
Our engineering team will review your request and provide a technical quotation accordingly.