Why Side Action Injection Molding is a Game Changer
Ever designed a part that needed perpendicular features to the mold opening direction?
That’s the sweet spot for our side action injection molding process.
It lets us form undercut geometry, side holes, or snap-fit grooves without compromising your design or forcing costly secondary operations in our manufacturing process.
Here’s how it works with our hollow mold tool systems:
- We build movable side cores into the mold
- These cores slide in sideways during closing
- They pull out before ejecting the final product
You’ll often hear this commonly referred to as:
- Core pull injection molding
- Mechanical side action
- Slide action molding
All enabling manufacturing plastic parts with complex geometries.
Introduction to Side Action Injection Molding
This advanced plastic injection molding technique incorporates side actions to create complex shapes that traditional straight pull mold methods can’t achieve.
The process involves heating thermoplastic materials to a molten plastic material state, then injecting it into molds with moving components. We specialize in producing:
- Double walled parts for insulation
- Components with undercut features
- Hollow plastic products through an innovative plastic casting technique
Our capabilities span:
- Additive manufacturing for prototypes
- High-volume mass fabrication
- Precision CNC machining of mold components
Where We Use Side Action Injection Molding
We’ve applied this technology across industries:
- Consumer electronics: Internal undercuts for snap-fit cases
- Automotive: Core side action for connectors
- Medical: Clean housing using hi rel plastics
- Industrial enclosures with tight tolerances
We handle everything from urethane polymer system components to thermoplastic powdered resin applications.
Action Mold Design and Development
Our mold making process combines:
- Advanced CAD design for undercut geometry
- CNC machining for precision components
- 3D printing for rapid prototyping
Key advantages of our approach:
- Single-source tool Anaheim Solutions
- Multiple supplier prospects managed in-house
- All information private and secure
What Makes Our Side Actions Reliable
We engineer molds with:
- Angled core pin systems
- Robust lateral core pull mechanisms
- Removable cores for maintenance
Supported by digital tools:
- 3D simulation of molten plastic material flow
- Advanced technologies for mold testing
- In-house action mold machining
Side Gate Injection Molding + Side Actions
Our dual-technique approach:
- Eliminates weld lines
- Enhances cosmetic finishes
- Reduces warping
Ideal for:
- Medical plastic tube components
- Cosmetic closures
- Precision mechanical parts
What You Can Expect
Beyond standard manufacturing plastic parts, we provide:
- Design advice from a first contact phone call
- Fast turnarounds with timely delivery
- Flexible MOQs starting at 100 units
- Full customer satisfaction guarantee
Our quote individually policy ensures fair pricing for every project.
Real Projects. Real Solutions.
Recent success:
A medical startup needed casings with internal snap-fit tabs.
Solution: Mechanical core slide system with angle pin setup.
Result: High quality products delivered in 3 weeks.
Tips for New Users
When designing for side action injection molding:
- Limit side feature depth
- Ensure proper core support
- Include draft angles
- Consult our engineering team early
Why Hongbangyi Plastic?
20+ years specializing in:
- Complex creating hollow plastic products
- Grand Rapids quality standards
- Cutting edge technologies
See the difference in:
- Precision mold movements
- Consistent quality plastics output
- Save time with integrated services
Let’s Talk About Your Next Plastic Part
Got a tricky design that’s been giving you a headache?
Or maybe you just need someone who gets plastic injection moulding and can help you move fast without cutting corners.
That’s where we come in.
At Hongbangyi Plastic, we’ve seen just about every kind of injection moulding challenge you can imagine — and we’ve helped solve them all. Whether it’s a complex undercut, a tight tolerance, or a small production run that still needs big-league precision, we’re ready to dive in.
We don’t just deliver parts.
We partner with you from the ground up.
Here’s how we make it easy:
- Material guidance – Not sure which thermoplastic to choose? We’ll help you pick the best fit for function, strength, and budget.
- Rapid feedback – Attach your design file, and we’ll review it quickly. No long waits. No back-and-forth guesswork.
- Design support – Need tweaks or improvements for manufacturability? We’ll point out what to adjust and help you fix it.
- Prototype to production – From one-off test parts to full short runs, we handle it all in-house.
- Low MOQ – We don’t make you order thousands just to get started.
- 20+ years of know-how – That’s two decades of solving real-world problems and building plastic parts that work.
We’re more than just a manufacturer — we’re an extension of your team.
You bring the idea.
We’ll help you bring it to life.
Contact Us
Email: Email: keenhu@customplasticproduct.com
Phone number: +86 134 1694 6882
📎 Attach your file for an instant design review and feedback — no strings.
Whether you’re stuck on material selection, design complexity, or just need a reliable plastic part supplier, Hongbangyi Plastic has your back.
Experience meets innovation.
Quality meets flexibility.
You meet your deadline.
Let’s get started today.
