
Blog
Guides and articles from Pratishna Engineers on choosing, sizing and buying injection moulding machines in India.

What PET Products Can You Make on a 125 Ton Machine?
PET products on a 125 ton machine: narrow-neck preforms for water, oil, FMCG and pharma, and the wide-mouth jar sizes that fit by cavity count.
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PET Moisture and Drying: Why It Decides Preform Quality
PET moisture and drying for preforms: the 50 ppm target, dew point, temperature and hopper time, how IV loss shows up, and how to size a dryer.
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Choosing Between the 32 mm and 35 mm Screw for PET on a 100 Ton Machine
Choosing a 32 mm and 35 mm screw for PET: shot share of the barrel, PET melt density, pressure trade-off and a worked preform example for both screws.
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Water Bottle Preforms on a 100 Ton Machine: What to Check First
Making water bottle preforms on a 100 ton machine? Check the resin grade, FSSAI rules, neck finish, wall and cycle first, with a worked output example.
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What PET Products Can You Make on a 100 Ton Machine?
PET products on a 100 ton machine: water, soft drink, oil, FMCG and pharma preforms, plus wide-mouth jars, with the clamp check for each mould.
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Starting PET Preform Production With a 75 Ton Machine
Starting PET preform production on a 75 t machine: the equipment you need, dryer sizing from throughput, first-day checks, and recycled-content rules.
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Running Trial Preform Moulds Before Scaling Up Production
Trial preform moulds explained: what a trial must prove, barrel size for a small shot, the 0.04 dl/g IV loss check, and what changes at scale-up.
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Small Pharma and Cosmetic Bottle Preforms on a 75 Ton Machine
Pharma and cosmetic bottle preforms on a 75 t machine: colour and mould change planning, neck finishes, PET grades named for these uses, and machine hours.
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What PET Products Can You Make on a 75 Ton Machine?
75 ton PET machine applications: which bottle and jar preforms fit, why clamp is rarely the limit, the stroke and shot checks, and FSSAI rules for PET.
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180 Ton Household vs Container Moulding Machine for Tubs and Containers
Household vs container moulding machine at 180 t: how injection unit, clamp speed, flow ratio and mould depth decide which suits your tubs and containers.
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Storage Boxes With Lids: Matching Shrinkage on a 180 Ton Machine
Storage box moulding at 180 t: why boxes and lids shrink differently, when to measure, which settings and grades bring them into line, and family moulds.
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Bucket Moulding on a 180 Ton Machine: Sizes, Shot Weight and Output
Bucket making machine at 180 t: which bucket sizes fit the clamp, how to size the barrel from bucket weight, what sets output, and PP grades for pails.
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