Mirror-Finish Lipstick Mold Parts | Precision Core Pins & Ejector Sleeves

Product Overview

Plastic lipstick mould precision mold parts, including core pins and sleeves, are high-accuracy functional components used in injection mould systems for cosmetic packaging. Manufactured by Senlan Precision, these parts are produced strictly according to customer drawings, with controlled tolerances, surface finish, and alignment to ensure stable mould operation and consistent cavity performance.

Key Features & Advantages

• Precision Core Pins and Sleeves
  Designed for accurate cavity forming and repeatable mould cycles.

• Tight Dimensional Tolerances
  Controlled concentricity, straightness, and surface finish.

• Stable Mould Performance
  Reduced wear and improved consistency during long production runs.

• Material Options Available
  Tool steel, stainless steel, or copper alloys based on mould design.

• Built-to-Print Manufacturing
  Fully customized according to customer drawings and technical specifications.

Application Scenarios / Industry Use

• Lipstick tube injection mould systems

• Cosmetic packaging mould assemblies

• Multi-cavity mould core and sleeve structures

• Precision moulds for cosmetic containers

• High-volume packaging mould tooling

Mold Structure & Design Description

Core pins and sleeves are critical forming elements within lipstick mould systems, defining internal geometry, wall thickness, and surface quality of plastic components. Precision machining ensures accurate fit between core and sleeve, minimizing flash, deformation, and mould wear. Design parameters such as clearance, material hardness, and surface treatment are strictly controlled based on mould structure requirements.

Manufacturing Capability & CNC Machining

Senlan Precision maintains stable manufacturing capability for high-precision mould components:

• High-accuracy CNC machining centers from MAKINO

• CNC turning and grinding equipment from HARDINGE

• Precision grinding and polishing processes

• Optional heat treatment and surface finishing

• Capability for prototype, small batch, and mass production

Custom Development / OEM Cooperation Process

1. Drawing Review
   Core pin, sleeve geometry, tolerance, and material requirements

2. Technical Evaluation
   Machining process and mould compatibility assessment

3. Process Planning
   CNC machining, grinding, polishing, and optional heat treatment

4. Production & In-Process Inspection
   Dimensional and surface quality control

5. Final Inspection & Delivery
   Export-standard packaging with inspection records

All parts are supplied under OEM / Built-to-Print manufacturing mode.

Quality Control & Export Experience

• Incoming material verification

• In-process dimensional inspection

• Final quality inspection before shipment

• Stable export supply to Europe and North America

• Experience supporting cosmetic, packaging, and medical mould projects

Related Products

• Precision Mold Core Inserts

• Injection Mold Sleeves

• Multi-Cavity Mold Components

• Cosmetic Packaging Mold Parts

• Custom Mold Mechanical Components

Frequently Asked Questions (FAQ)

Q1: Are these core pins and sleeves standard parts?
No. All parts are custom-manufactured based on customer drawings.

Q2: What tolerance levels can be achieved?
Typical tolerances range from ±0.002 mm to ±0.01 mm, depending on design.

Q3: Can different materials be selected?
Yes. Material selection is based on mould structure and application needs.

Q4: Are these parts suitable for multi-cavity moulds?
Yes. They are commonly used in multi-cavity cosmetic mould systems.

Get a Quote

Please provide your drawings, material specifications, tolerance requirements, and order quantity.
Our engineering team will evaluate your project and offer a technical quotation with lead time.