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Dear E.M. NJAU
Good to see that you are planning to come in PET business. To make preform the only material you need is PET ( poly Ethylene Terephthalate) of Bottle grade(Colour if required). The most appropriate machine can be bought from HUSKY injection molding machines (www.husky.ca) these machine are expensive but they pay back good.
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I have problems blowing 200ml 18grams Amcor preforms, whereby the bottom of the bottle would develop a crack or hole randomly amongst the 4 molds during blowing and there is sign of off-centered gates.
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you injection old needs to be refurbished. the nozzles are worn and cause the pin valve to not close perfectly to the cavity injection point and cause a deformation to the cavity injection pin valve opening. this causes ununiform injection pressure thus uneven cooling and the preform will then bend in the direction of the more rapid cooling. when was the injection hot half rebuilt?
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our company intends to establish preforms manufacturing plant. what are the most appropriate basic machine and what are the materials for making or producing preforms.
looking forward to your valid assistance and guidance.
with kind regards
E.M. NJAU
GM
KOL
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ingection mould need adjuste setting
sure the materials good drye
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this may be from preform ingection mould
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the preform is good its wall thichness is regular it is bent at the last stage of heating and before blowing,please tell me what is the cause of that problem.
thanks.
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Excess heating of preform. reduce heating or time.
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the preform is good its wall thichness is regular it is bent at the last stage of heating and before blowing,please tell me what is the cause of that problem.
thanks.
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