DLC Coated Mold Cores | High-Precision Parts for 8-Cavity PET Bottle Cap Molds

Product Overview

DLC-coated high precision mold cores are designed for 8-cavity plastic injection molds used in PET bottle cap production. Manufactured strictly to customer drawings, these mold cores provide stable cavity geometry, reduced friction during demolding, and consistent dimensional control under high-cycle injection molding conditions.

Key Features & Technical Advantages

• DLC (Diamond-Like Carbon) surface coating for reduced friction

• High dimensional accuracy for multi-cavity mold balance

• Improved wear resistance under continuous production cycles

• Stable concentricity and cavity alignment

• Suitable for high-speed, high-output injection molding

• Fully customized and manufactured to customer specifications

Applications & Industry Use

• PET bottle cap injection molds

• Multi-cavity (8 cavity and above) mold systems

• Packaging closure and cap production molds

• Medical and laboratory plastic component molds

• Precision plastic injection tooling assemblies

Mold Structure & Design Description

The mold core is a critical functional component in multi-cavity injection molds, directly affecting part consistency and mold cycle stability. DLC coating reduces adhesion between plastic material and core surface, supporting smoother demolding and extended service life. All structural dimensions and tolerances are produced according to approved drawings.

Manufacturing Capability & CNC Machining Capacity

Senlan Precision operates advanced machining and finishing equipment, including:

• High-precision CNC machining centers from MAKINO (Japan)

• Turning and milling systems from HARDINGE (USA)

• Multi-axis machining for complex core geometry

• Achievable machining accuracy up to ±0.002 mm

All DLC coating processes are applied after precision machining and verified for uniform thickness.

Custom Development & OEM Cooperation Process

1. Customer submits 2D drawings or 3D CAD data

2. Engineering review and manufacturability analysis

3. Material and surface treatment confirmation

4. Precision machining and DLC coating

5. Dimensional inspection and approval

6. Batch production and final quality control

All projects follow a Built-to-Print / OEM manufacturing model.

Quality Control & Export Experience

• Incoming material inspection and traceability

• In-process dimensional and concentricity inspection

• Surface coating thickness verification

• Final inspection before shipment

• Stable export experience serving international mold manufacturers

Inspection reports are available upon request.

Related Products

• Multi-cavity mold core inserts

• Mold cavity inserts with surface coating

• Thread cores for cap and closure molds

• Precision EDM and CNC machined mold components

FAQ (Technical & Purchasing)

Q1: Is the mold core supplied as a standard part?
A: No. All mold cores are custom-manufactured according to customer drawings.

Q2: What is the benefit of DLC coating on mold cores?
A: DLC coating reduces surface friction and wear, supporting smoother demolding and longer tool life.

Q3: Can this mold core be used in molds with more than 8 cavities?
A: Yes. The design can be adapted for higher cavity counts based on mold layout.

Q4: What tolerance level can be achieved?
A: Typical machining tolerance is ±0.002–0.005 mm, depending on core geometry.

Get a Quote

Please submit your drawings or technical specifications to receive a professional evaluation and quotation for custom DLC-coated mold core components.