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Hi am using a pp copolymer to produce 28mm 2- piece closure but its removing a lot of fibres, so which is the best materials to use.
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We export poly propylene polymer resins. We sell polypropylene homopolymer , PP copopolymer, polypropylen random granules. We sell virgin PP (virgin polypropylene).
Please visit our site: irulz.itgo.com to contact with us.
All esteemed buyers of PP should send official request in details (required MFR, application, quantity, destination, target price.
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REALLY GOOD WBSITE, CAN YOU PLEASE HELP THAT IF WE USE THE RECYCLED PET FOR MAKING PET PREFORM THEN THERE IS A YELLOWNESS IN THE BOTTLE, HOW IT CAN BE REMOVED AND IS THERE ANY LOW COST MACHINE WHICH CAN REMOVE IMPURITIES FROM THE RECYCLED PET BEFORE USING IT.
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Dear Sir,
Send us the details or process in which PET is convrted in to PP
regards,
SANTOSH
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To get best stretch performance of PP, PP preform should be different (shorter and thicker than PET preform). PET preform mold can NOT be used for PP preforms.
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Hi all ?
Does the geometry of the PP preform need to be different from the PET preform?
Can I use a PET mold the make PP preforms ?
As the thickness of the PP preform need to be higher , have I to change the design of the preform ?
Thanks in advance
Humberto
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SUB:PP STRETCH BLOW MOULDING
1. CAPACITY VOLUME MAXIMUM CAN BE BLOWN.
2. RESIN AVAIBILITY AND NAME OF MANUFACTURES OF RESIN. GRADE
3. TOATL PROJECT COST
4. OUT PUT PER HOURS FOR 500 ML AND 300 ML BOTTLES FOR SOFT DRINKS NON CARONATED.
AWAITING YOUR EARLY REPLY
REGARDS
MALAVIYA B.H
GENERAL MANAGER PLASTIC
TEL: +255 745 030 265
FAX: +255 22 2861248
WEB: www.metl.net
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please reply that pet have how many tensile strength?
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seeks information about the recycle of PET flakes (From used bottle) for production of 1.4d bright, SD and mass coloured PSF
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I am interested making pp bottles in 180ml or 200ml size. Who can help. We alredy make pet bottles. Thanks.
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Hello I am currently working a project in College about using a blow molding system for make-believe company. This site is good info.
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but how to make a preform from pp? if by your machine, so how much does it cost? and what are the other machines serving it?
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Dear Sir,
I am very much impressed by the comparison data.
Thanks
vijay
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really its very good web side and very useful for pet processer
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More advantages:
1. Hot fillable, sterilizable and micro-ovenable;
2. Single material for cap and containers, easy to recycle.
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Although injection molding cycles are longer, capital investment in PP preform production lines may be less than the PET equivalent. Major savings may be achieved through:
1. The use of thermal gate hot runner systems, which are less expensive and require less maintenance than valve gates
2. Elimination of the costs associated with resin dryers and neck crystallizing equipment (for hot fill)
3. Further down the bottle production line, reheat-stretch-blow molding of PP containers require careful control. PP bottles have a narrow operating temperature window of only 3 - 5°C compared to 10 - 15°C for PET.
4. PP’s high O2 and CO2 permeability means that for some situations, PP containers will require a barrier layer, while PET may be suitable without one.
5. PP stretch ratios typically result in shorter, thicker wall sections than PET preforms. This increased wall thickness, together with PP’s lower thermal conductivity, results in longer molding cycles.
6. To approach the strength and crystal clarity of PET, PP bottle resins must include a nucleating/clarifying agent, which can add up to 6% to the cost of PP.
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Polypropylene is being explored as an alternative to PET for some bottling applications. Its low relative cost and recent performance and clarity improvements have caught the attention of the rigid packaging industry. A close examination of key benefits and drawbacks is necessary before making any material selection for a new packaging project.
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