Injection Moulding Machine for Perforated Yarn Dye Tubes
Perforated HTHP dye tubes, the rigid yarn carriers used in package dyeing, are produced on horizontal injection moulding machines in glass-filled PP or modified PPO. Tube length and the slides that form the holes set mould size, and cavities set tonnage. Weld lines behind every hole must hold up through repeated hot dyeing cycles.
Selection for dye tubes looks at mould height for slide-action tools, a screw and barrel that handle glass fibre, and stable injection speed for strong welds. Pratishna Engineers supplies horizontal injection moulding machines for dye tube production and can recommend a configuration for your tube and mould.
Manufacturing Yarn Dye Tubes?
Send the tube drawing, hole pattern, material and dyeing duty, and Pratishna Engineers will recommend a machine.
Machine Requirements for Perforated Dye Tube Moulding
A dye tube goes back into the dyeing vessel again and again, so these points shape the machine and process:
- Heat-resistant grade that keeps shape under package pressure
- Strong weld lines around each perforation
- Clean hole edges without flash that snags yarn
- Wear-resistant screw and barrel for glass-filled PP
- Mould height for split cavities with hole-forming slides
- Drying before moulding when running modified PPO
Recommended Machine for Perforated Dye Tubes
Slide-action dye tube moulds are bulky for the part weight, so frame size and daylight count as much as tonnage. Single and two-cavity tools for shorter tubes can fit the E Series (75-180 T). Longer tubes and multi-cavity moulds generally go to the H Series (120-350 T) or C Series (140-320 T), each with wear-resistant screw and barrel for glass-filled grades.
Not Sure Which Machine You Need?
Share your dye tube sample, hole pattern and target output for a machine proposal.
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 KBTextile Components & Machine Guide
A guide to Textile components, covering cones, bobbins, dye tubes, spools, dye springs, creel parts, yarn guides and beam flanges. It explains heat-resistant grades for dyeing, concentricity, wear resistance, and how to match each part to a suitable machine.
Download PDFPDF · 211 KB
FAQs / Buyer Questions
Common questions from dye houses and dye tube makers about the machine and material.
Which Injection Moulding Machine Is Used to Make Perforated Dye Tubes?
A horizontal machine with room for a slide-action mould. Short tubes in one or two cavities can run on the E Series, and long tubes or more cavities move to the C or H Series.Which Material Lasts Longest in HTHP Dyeing?
Modified PPO keeps its shape and colour longer at dyeing temperature than glass-filled PP, but costs more per piece. Dye houses often compare cost per dyeing cycle rather than piece price before choosing.How Are the Holes in a Dye Tube Moulded?
Pins on side slides close against the core to form the holes. Each pin leaves a weld line behind it, so injection speed and mould temperature are set for weld strength, and worn pins are refitted before flash appears.
Can Used Dye Tubes Be Reground and Remoulded?
Used tubes are often ground and fed back into new mouldings. The regrind ratio should stay fixed and dried where needed, because glass fibre shortens with each pass and lowers stiffness at temperature.Can Pratishna Recommend a Machine for My Perforated Dye Tube?
Yes. Share the tube drawing or sample, hole pattern, material, part weight, cavities, mould size, dyeing duty and monthly quantity, and Pratishna Engineers will suggest a suitable machine.Does the Machine Suit Other Dyeing and Winding Parts Too?
Yes. It can also mould compressible dye springs, textile cones, bobbins and warp beam flanges, depending on mould size.
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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