Blog
Guides and articles from Pratishna Engineers on choosing, sizing and buying injection moulding machines in India.
Moulding Buckets, Crates and Dustbins on Two Platen Machines
Choosing a bucket and crate moulding machine: opening stroke for deep pails and dustbins, clamp force for crates, PP grades and barrel size.
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Hydro-Mechanical Clamping Explained: Balanced Force and Flash-Free Parts
How hydro-mechanical clamping works, why even clamp force cuts flash on large flat parts, and how to set tonnage without crushing vents or cracking moulds.
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Two Platen vs Toggle Injection Moulding Machines: Which Suits Large Moulds?
Two platen vs toggle for large moulds: compare opening stroke, mould height, clamp force setting, floor space and lock-up speed, with a worked example.
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PET Preform Neck Finishes Explained: PCO 1881, 26/22 and Wide Mouth
A PET preform neck finish guide: PCO 1810 vs PCO 1881, the 26/22 neck, wide-mouth jars, what each means for clamp and tooling, and how to fix neck faults.
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Lightweighting PET Preforms: Wall Thickness, Cycle Time and Machine Settings
PET preform lightweighting explained: how wall thickness sets cooling time, why lighter shots can raise acetaldehyde, and which settings to re-tune.
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Moulding With rPET: Meeting India's Recycled Content Rules for PET Bottles
India's recycled content rules for PET bottles for moulders: PWM targets, FSSAI food-grade rPET, and the drying and IV checks that protect preforms.
Read morePET Preform Making Machine: How to Choose Tonnage, Cavities and Output
Size a PET preform making machine step by step: clamp from neck ledge area, barrel from shot weight, output from cavities and cycle time.
Read moreThin-Wall and Multi-Cavity Moulding on Hybrid Machines
Thin-wall and multi-cavity moulding on hybrid machines: speed, pressure and clamp needs, mould points, resin grades and a worked sizing example.
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Cutting Power Costs in Injection Moulding With Hybrid Machines
Cut power costs in injection moulding: where energy goes, how hybrid machines lower base load, low-cost fixes and how kVAh billing changes the sums.
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Servo-Electric Ball Screw Injection: Why Shot Repeatability Improves
How servo-electric ball screw injection improves shot repeatability, what it cannot fix, and how to prove the gain by weighing parts on your own mould.
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Hybrid vs Hydraulic vs All-Electric Injection Moulding Machines: A Practical Comparison
Hybrid vs hydraulic vs all-electric injection moulding machines: drives, base load, pressure control, maintenance and how to shortlist one for your job.
Read morePVC Moulding for Plugs and Grommets: Temperature and Screw Care
PVC moulding for plugs and grommets: melt temperatures by hardness, screw and barrel choices, shot size and residence time, and safe purging and shutdown.
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