20+
Years in plastic closure & mould manufacturing
100+
Engineering, tooling & production specialists
30+
Export markets served worldwide
100M+
Annual closure production capacity
Who We Are
About FANXUN CAP
We are not only a plastic cap supplier. FANXUN CAP combines in-house cap mould manufacturing with high-volume closure production for lubricant, chemical, automotive, food, household, industrial, and aerosol packaging applications.
From initial part design and mould flow review to sampling, mass production, and quality inspection, our team controls the full path from tooling to finished closures — helping buyers reduce supplier risk, improve sealing consistency, and shorten development cycles.
- Dedicated mould workshop for plastic closure tooling
- High-speed injection molding for stable mass production
- Automatic assembly, leak testing, and inspection lines
- OEM & ODM support for custom caps and mould projects
- Export experience with specification-driven B2B communication
Company background and credentials are available on our company profile page.
Production Capability
Integrated Mould, Molding & Assembly Workshop
Our factory invests in production equipment and process control across mould making, injection molding, and automated assembly — so cap performance stays consistent from tooling to shipment.
Injection Molding
High-speed machines produce lubricant caps, chemical closures, and custom plastic caps with stable dimensions and repeatable cycle times.
Precision Cap Mould Production
Multi-cavity moulds are engineered for sealing performance, part consistency, and long-run production efficiency.
Automatic Assembly
Automated lines assemble, inspect, and prepare closures for bulk packaging with reduced manual variation.
See more in our injection molding and mold workshop pages.
Tooling Strength
Plastic Closure Mould Development
Cap quality starts with mould design. Our tooling engineers support custom cap mould development for screw caps, flip-top closures, engine oil caps, and application-specific packaging components.
We review part geometry, gate design, cooling, and ejection strategy before machining — helping reduce trial rounds and improve sealing reliability in production.
- CAD / CAM engineering and DFM support
- Multi-cavity moulds for high-volume programs
- Mould trial, optimization, and maintenance
- Tooling aligned with downstream injection production
- Support for new product development projects
For project-based support, see custom mold development and new product development.
Mass Production
Precision Injection Molding for Closures
After mould approval, our injection workshop manufactures plastic closures for lubricant packaging, chemical bottles, automotive fluids, food containers, and daily-use packaging programs.
Standard operating procedures govern material handling, process parameters, and in-process checks — supporting dimensional consistency, torque performance, and leak resistance.
- Stable multi-shift production capability
- Application-specific material and structure options
- Batch traceability and process documentation
- Scale-up from sampling to bulk orders
Automation
Automatic Assembly & Inspection Line
Assembly and inspection are integrated into the production flow so each closure is checked before packing. This is especially important for anti-leak programs and export-quality packaging requirements.
- Automatic component assembly
- Leak and function testing where required
- Visual inspection and sorting
- Packaging preparation for bulk shipment
Quality System
Quality Control Across Mould & Production
Quality is managed at both tooling and manufacturing stages — from incoming resin to final shipment inspection.
Incoming Material
Resin and component checks before production release.
Mould & First Article
Tooling verification and sample approval before mass runs.
In-Process Control
Continuous monitoring of dimensions, assembly, and function.
Final Inspection
Appearance, sampling, and packing checks before dispatch.
Project Workflow
From Cap Mould Inquiry to Delivery
A clear workflow helps buyers move from concept to tooling, sampling, and stable bulk production.
Inquiry
Share application, drawing, or target cap specification.
Design
Engineering review for part and mould feasibility.
Mould Making
Tooling build, trial, and sample approval.
Production
Injection molding, assembly, and QC release.
Delivery
Stable supply for repeat and export programs.
Engineering Support
R&D for Closure & Mould Optimization
Our engineering team supports buyers who need more than a standard catalogue cap — including structure refinement, moldability improvements, and faster sample turnaround for new packaging programs.
- Custom closure concept and 3D support
- Mold flow and manufacturability review
- Rapid sample development before tooling investment
- Design optimization for sealing and production efficiency
Learn more about what sets us apart on the Why Fanxun page.
Partnership Model
OEM & ODM Cap / Mould Services
Whether you need a new cap mould, a modified closure design, or long-term bulk supply, FANXUN supports both tooling-led and production-led projects.
Requirements
Share drawings, samples, or application details.
Engineering
Closure and mould proposal with manufacturability feedback.
Sample Approval
Mould trial and sample validation before scale-up.
Mass Production
Reliable manufacturing and repeat order support.
Custom closure programs are outlined on our custom closures page, or you can request a quote directly.
Factory Evidence
Factory Gallery
Real photos from our mould workshop, injection molding floor, assembly lines, and quality inspection areas — showing the manufacturing depth behind our cap and mould programs.
For a broader factory walkthrough, visit our factory overview.
Buyer Questions
Frequently Asked Questions
Do you manufacture cap moulds as well as plastic caps?
Yes. FANXUN CAP supports plastic closure mould development and bulk cap production in one integrated manufacturing setup. Buyers can start with mould tooling, cap supply, or a combined OEM / ODM program.
Can you manufacture customized caps for my application?
We provide OEM and ODM services including custom mould development, structure modification, logo options, and color matching for lubricant, chemical, food, and industrial packaging projects.
Do you provide samples before mass production?
Stock samples are available for evaluation where applicable. For custom caps and new mould programs, we support sample development after engineering review and mould trial.
What is the typical lead time for mould and production?
Lead time depends on mould complexity, cavity count, material, and order quantity. Our sales and engineering team will provide a project timeline after reviewing your requirements.
More answers are available in our full FAQ resource.
Need a Cap Mould Partner — or a Reliable Closure Supplier?
Share your application, drawing, or target specification. FANXUN CAP can support custom mould development, sampling, and long-term production for global B2B programs.
