If you’ve ever wondered how durable, lightweight, and complex plastic components are made—especially those with hollow interiors—you’re in the right place.
At LXG Injection Molding, we specialize in manufacturing injection molding hollow parts for clients worldwide, offering precision, consistency, and design freedom.
Whether you’re designing a medical device housing, an automotive duct, or a custom industrial component, choosing the right injection molding hollow part manufacturer can make all the difference.
In this article, we’ll walk you through what hollow part injection molding is, how it works, the techniques used, materials, applications, and why LXG Injection Molding is one of the leading injection molding hollow parts suppliers in the industry.
Instant pricing & DFM
Guidance from automotive molding experts
Tight tolerances, complex geometries, and multi-material capabilities
Proven expertise with 3,000+ molds delivered worldwide
What Are Hollow Parts in Injection Molding?
Hollow plastic parts are components that have empty spaces or internal cavities within them.
These cavities can serve multiple purposes — from reducing weight and material use to improving insulation and part performance.
Think about:
Automotive air ducts
Medical fluid channels
Plastic handles and tubes
Consumer product casings
Creating these complex geometries requires expertise and specialized equipment. That’s where a trusted injection molding hollow parts factory like LXG Injection Molding comes in.
How Hollow Parts Are Made: Inside the Injection Molding Process
When most people think of injection molding, they imagine solid plastic parts. However, producing hollow parts requires advanced tooling and creative engineering.
There are several techniques that injection molding hollow parts manufacturers use to achieve hollow designs:
1. Gas-Assisted Injection Molding
In this process, molten plastic is first injected into the mold, followed by pressurized gas.
The gas pushes the molten plastic toward the mold walls, creating hollow channels inside.
This technique is ideal for:
Thick parts that would otherwise sink or warp
Lightweight structural components
Handles, panels, and tubular parts
Benefits:
Reduces weight and material usage
Improves surface finish
Eliminates sink marks and voids
2. Water-Assisted Injection Molding
Similar to gas-assisted molding, but using water instead of gas, this method allows for cooling and hollowing at the same time.
It’s perfect for parts like pipes, handles, and automotive ducts that require long hollow channels.
3. Core-Back or Moveable Core Molding
This involves a mechanical core inside the mold that moves during the injection process to create hollow sections.
Injection mold hollow parts made using this method are highly precise, with exact wall thicknesses and internal geometry.
4. Two-Shot or Multi-Material Molding
Some injection molding hollow parts factories use multi-shot technology to mold a rigid structure with a softer outer layer, or vice versa, combining functionality and comfort.
Why Hollow Parts Are in High Demand
Hollow plastic parts are widely used because they combine strength, lightness, and functionality.
Here’s why more companies are switching to injection molding hollow parts instead of traditional solid molding:
Reduced Weight: Perfect for automotive, aerospace, and robotics applications.
Lower Material Costs: Less resin = lower production cost.
Improved Structural Integrity: Eliminates sink marks and stress points.
Better Aesthetics: Smooth, uniform surfaces without visible seams.
Custom Design Flexibility: Allows for complex geometries and internal channels.
Applications of Hollow Plastic Injection Molding
As one of the leading injection molding hollow parts suppliers, LXG Injection Molding serves a wide range of industries:
Automotive
Hollow parts are essential in automotive design to reduce vehicle weight while maintaining strength.
Common parts include:
Air ducts
Door handles
Trim panels
Steering column components
Medical & Healthcare
In healthcare devices, hollow components help reduce material weight and create channels for airflow, fluids, or wiring.
Used in:
Catheter components
Medical enclosures
Surgical device housings
Consumer Products
Everyday items like furniture handles, appliance housings, and sporting goods often rely on injection mold hollow parts for ergonomic comfort and reduced material cost.
Industrial Applications
In robotics and manufacturing, hollow structural parts provide strength with minimal weight — perfect for mechanical arms, tubes, and safety covers.
Choosing the Right Injection Molding Hollow Part Manufacturer
Selecting a manufacturer isn’t just about price. It’s about expertise, consistency, and reliability.
When evaluating injection molding hollow parts factories, here’s what to look for:
✅ Experience in Hollow Molding
Not every molding company can produce complex hollow components. You need a partner with specialized tooling and proven processes.
✅ Engineering Support
A capable injection molding hollow part manufacturer should assist with DFM (Design for Manufacturability), mold flow analysis, and material selection.
✅ Quality Assurance
Look for certifications like ISO 9001, ISO 13485, and UL compliance. At LXG Injection Molding, every project undergoes CMM, FAI, and SPC checks.
✅ Material Expertise
A strong injection molding hollow parts supplier works with materials like ABS, PC, PP, Nylon, and reinforced polymers — depending on application needs.
✅ Production Scalability
Whether you need 100 prototypes or 1 million production units, your factory should scale seamlessly — something LXG specializes in.
Materials Used in Hollow Part Injection Molding
At LXG Injection Molding, we use a wide range of plastics depending on strength, weight, and heat requirements.
Common materials include:
ABS (Acrylonitrile Butadiene Styrene) – Strong, versatile, ideal for prototypes and consumer goods.
Polypropylene (PP) – Lightweight and flexible, perfect for automotive and packaging.
Polycarbonate (PC) – High-impact resistance and optical clarity for electronics and safety parts.
Nylon (PA) – Durable and wear-resistant for industrial applications.
PBT & PET – Common for electrical components due to insulation and chemical resistance.
Each project is customized to fit your product’s structural and performance needs.
Advantages of Working with LXG Injection Molding
When you partner with LXG Injection Molding, you gain access to a world-class injection molding hollow parts factory with decades of expertise and advanced technology.
Here’s what sets us apart:
1. Advanced Tooling Design
We design and build custom molds in-house using precision CNC and EDM equipment.
Our tooling ensures perfect part geometry and consistent hollow cavity formation.
2. Rapid Prototyping
Need samples fast? We offer rapid injection mold hollow parts within days for testing and design validation.
3. Global Manufacturing Network
With molds delivered to 40+ countries and 3,000+ projects completed, we combine global reach with localized support.
4. Flexible Production Volumes
From low-volume bridge molding to full-scale production, we adapt to your business needs without compromising quality.
5. Sustainability
We prioritize eco-friendly materials and energy-efficient machines, minimizing waste and environmental impact.
How to Get Started with LXG Injection Molding
If you’re ready to order from a trusted injection molding hollow part manufacturer, here’s how the process works:
Submit Your Design – Send us your 3D files or drawings.
Get a Free DFM Review – Our engineers analyze your design for manufacturability and cost efficiency.
Receive a Quote – Transparent pricing, no hidden fees.
Prototype or Tooling – We build sample parts for your approval.
Production & Quality Control – Mass production begins under strict quality standards.
Delivery – On-time delivery worldwide.
👉 Visit lxginjectionmolding.com to start your instant quote today.
Why Global Brands Trust LXG Injection Molding
Global innovators choose LXG because we deliver more than just molded parts.
We deliver confidence — through expertise, reliability, and precision.
3,000+ molds delivered
40+ countries served
18+ years of experience
ISO 9001, ISO 13485, FDA, and UL certifications
From concept to shipment, LXG provides a turnkey manufacturing solution that saves time, reduces cost, and guarantees quality.
Conclusion: The Trusted Partner for Injection Molding Hollow Parts
If you’re looking for a dependable injection molding hollow part manufacturer, look no further than LXG Injection Molding.
With cutting-edge technology, experienced engineers, and a track record of success, we’re the go-to factory for hollow plastic parts that require accuracy, durability, and consistency.
No matter your industry — automotive, aerospace, medical, consumer, or industrial — LXG has the capacity and expertise to bring your ideas to life.
👉 Get in touch today to discuss your next project at lxginjectionmolding.com
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