Injection Moulding Machine for Bag Feet, Corner Protectors and Studs
Bag feet, corner protectors and studs are produced on horizontal injection moulding machines in high-cavity moulds, from PP, nylon, TPE or TPU depending on how much impact they must absorb. Cavity count and the fixing method decide the mould and machine. Impact strength at low temperature matters most, since airport handling is where these parts fail.
These are small parts run in large numbers, so machine choice is about fitting a high-cavity mould and keeping every cavity full. Pratishna Engineers supplies horizontal machines for this work and can suggest a size from your cavity plan.
Manufacturing Bag Feet and Corner Protectors?
Share your part sizes, material and cavity plan, and Pratishna Engineers will recommend a suitable machine.
Machine Requirements for Bag Feet and Corner Protector Moulding
Feet and corner parts take the knocks and the scraping, and they come off the machine in large numbers. The points to check are:
- Balanced filling across every cavity of a high-cavity mould
- Grades that keep notched impact strength when cold
- Moulded prongs, screw bosses or rivet holes for fixing
- Drying of nylon and TPU before moulding
- Abrasion-resistant faces on feet and corner caps
- Ejection that does not tear soft TPE parts
Recommended Machine for Bag Feet and Corner Protectors
Bag feet and studs are tiny, and even high-cavity moulds for them usually fit the E Series (75-180 T). Larger corner protectors for hard cases, or tools with very many cavities, can need the H Series (120-350 T) for the extra projected area and mould size.
Not Sure Which Machine You Need?
Tell us the part size and cavity count for a machine suggestion.
Why Choose Pratishna Engineers?
- Application-Based Machine Selection
- In-House Engineering & Manufacturing
- Multiple Machine Series
- Production-Focused Solutions
- End-to-End Technical Support
- Industry-Specific Solutions
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Injection Moulding Machine Buyer Resources
Download practical resources to help you select, size and specify the right machine.
Horizontal Injection Moulding Machine Selection Guide
A step-by-step guide covering the key inputs needed to select the right machine: product weight, projected area, number of cavities, plastic material, required clamping force, shot / injection capacity, mould dimensions, production quantity, cycle time and automation requirement.
Download PDFPDF · 265 KB
How to Calculate Clamping Force for an Injection Moulding Machine
A clear methodology that explains how clamping force is calculated, covering projected area, injection pressure, safety factor, number of cavities and material considerations.
Download PDFPDF · 363 KBLuggage & Bags Components & Machine Guide
A guide to Luggage & Bags components, covering trolley parts, spinner wheels, buckles, zipper sliders, handle grips, lock housings and case latches. It explains POM, nylon and PP, two-material parts, wear resistance, and how to match each part to a suitable machine.
Download PDFPDF · 206 KB
FAQs / Buyer Questions
Questions bag and case makers ask about moulding feet, studs and corner parts.
Which Injection Moulding Machine Is Used to Make Bag Feet and Corner Protectors?
Small horizontal machines, mostly the E Series, because the parts stay small even when the mould carries many cavities. Bigger hard-case corner protectors or larger tools move up to the H Series.Which Material Suits Bag Feet and Corner Protectors?
PP and nylon give hard, wear-resistant feet and studs, and ABS suits rigid protectors. TPE and TPU absorb knocks better on case corners but need a bonded or mechanical fixing to stay in place.Why Is Cold Impact Strength Important?
Cases are thrown, stacked and dropped during airport baggage handling, often in cold conditions. A grade that is tough at room temperature can crack when cold, so notched impact at low temperature is the test that counts.
How Are Bag Feet Fixed to the Bag?
Feet and studs are usually held by a moulded prong, a screw into a moulded boss or a rivet through the base. The fixing feature is built into the mould and affects the cores and ejection.Can Pratishna Recommend a Machine for My Bag Feet?
Yes. Share the drawings or samples, materials, part weights, mould dimensions, number of cavities and monthly volume, and Pratishna Engineers will recommend a suitable machine.Does the Machine Suit Other Small Luggage Parts Too?
Yes. E and H Series machines also run trolley rail guides, bag buckles, cord locks and zip pull tabs, subject to the mould and cavity count.
Technical Disclaimer
Disclaimer: The information provided in this webpage is for general informational and educational purposes only. It is based on technical references and industry information available at the time of preparation and may be subject to change. It does not constitute engineering, technical, commercial or professional advice, nor does it constitute a quotation, specification, warranty or contractual commitment by Pratishna Engineers.
Actual injection moulding machine and process requirements vary according to the component design, material, mould, production volume, machine configuration and operating conditions. The information, examples, calculations and recommendations provided should be independently evaluated and verified for the specific application before making any equipment, process or production decision. Information obtained from third-party sources remains subject to the accuracy and limitations of those sources.
Limitation of Liability: Pratishna Engineers makes no representation or warranty, express or implied, regarding the completeness, accuracy or suitability of the information for any particular application. To the extent permitted by applicable law, Pratishna Engineers shall not be liable for any loss, damage, cost or consequence arising from reliance on or use of the information contained in this webpage. Final machine selection, configuration and application suitability should be confirmed with Pratishna Engineers based on complete and accurate project requirements.
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