Which Injection Moulding Machine Is Used to Make Zip Pull Tabs?

Small horizontal machines in the E Series, because tabs are light and the mould, not the part, sets the size. Tool finish and gate position decide the result more than tonnage.

How Is the Logo Kept Sharp on a Pull Tab?

Fine logo detail needs full filling and enough holding pressure in every cavity, with the gate kept off the branded face. Worn or unpolished cavities show up as soft edges and dull spots.

Can Pull Tabs Be Moulded Onto a Metal Slider?

Yes, pull tabs are often overmoulded onto a die-cast slider or a cord. That needs insert loading or a second shot, so the machine is planned around the insert and should be discussed before quoting.

How Are Brand Colours Matched Across Batches?

With a fixed masterbatch and let-down ratio, dried material and the same process settings each run. Colour changes need a full purge, as streaks from the last shade show clearly on small cosmetic parts.

Can Pratishna Recommend a Machine for My Zip Pull Tab?

Yes. Share the tab drawing or sample, logo and finish requirement, material, part weight, mould dimensions, cavities and monthly volume, and Pratishna Engineers will recommend a suitable machine.

Does the Machine Suit Other Zip and Bag Trim Parts Too?

Yes. E Series machines can also mould zipper sliders, cord locks and toggles, bag buckles and bag studs, subject to the mould.

Injection Moulding Machine for Zip Pull Tabs, Pullers and Branded Trim

Zip pull tabs, pullers and branded trims are made on small horizontal injection moulding machines in very high-cavity moulds, from POM, ABS, PC or TPU. Cavity count and mould size set the machine more than the part does. Surface finish matters most: colour match, gloss and a crisp logo are the specification.

With the brand on every tab, selection centres on gate placement, shot accuracy across cavities and clean colour changes. Pratishna Engineers supplies horizontal machines for pull tab moulding and can recommend a size from your tool.

Moulding Zip Pull Tabs?

Share your tab design, material and cavity plan, and Pratishna Engineers will recommend a suitable machine.

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Machine Requirements for Zip Pull Tab Moulding

A pull tab is small, but it carries the brand and gets judged by eye. Points that decide the result:

Gate placed off the logo and visible face
Polished or textured tool finish held in every cavity
Accurate colour match with masterbatch and clean purging
Balanced filling so fine logo detail forms in all cavities
Drying of PC, PA6 and TPU before moulding
Cord hole or slider loop moulded without flash

Recommended Machine for Zip Pull Tabs

Pull tabs are light, and even very high-cavity moulds usually fit the E Series (75-180 T), where shot accuracy and mould size count for more than clamping force. Tabs overmoulded onto a metal slider or cord, or two-colour tabs, need insert or second-shot moulding and are planned separately with Pratishna Engineers.

E Series - 75 to 180 tons

Not Sure Which Machine You Need?

Send your pull tab design and cavity count for a machine suggestion.

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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
Machine Lifecycle Support

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 KB
Luggage & 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 brand trim and zip accessory makers ask most.

Which Injection Moulding Machine Is Used to Make Zip Pull Tabs?
Small horizontal machines in the E Series, because tabs are light and the mould, not the part, sets the size. Tool finish and gate position decide the result more than tonnage.
How Is the Logo Kept Sharp on a Pull Tab?
Fine logo detail needs full filling and enough holding pressure in every cavity, with the gate kept off the branded face. Worn or unpolished cavities show up as soft edges and dull spots.
Can Pull Tabs Be Moulded Onto a Metal Slider?
Yes, pull tabs are often overmoulded onto a die-cast slider or a cord. That needs insert loading or a second shot, so the machine is planned around the insert and should be discussed before quoting.

How Are Brand Colours Matched Across Batches?
With a fixed masterbatch and let-down ratio, dried material and the same process settings each run. Colour changes need a full purge, as streaks from the last shade show clearly on small cosmetic parts.
Can Pratishna Recommend a Machine for My Zip Pull Tab?
Yes. Share the tab drawing or sample, logo and finish requirement, material, part weight, mould dimensions, cavities and monthly volume, and Pratishna Engineers will recommend a suitable machine.
Does the Machine Suit Other Zip and Bag Trim Parts Too?
Yes. E Series machines can also mould zipper sliders, cord locks and toggles, bag buckles and bag studs, subject to the mould.

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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