Visual Attributes: The list here can be endless but the main ones include clarity, bubbles, haze, scratches, damage, flash on partting line (which can impact on cap torque), etcĥ. The higher the moulding melt temperature the lower the IV due to thermal cleavage of the polymer.Ĥ. Certification from your preform supplier should be adequate or if moulded in house a testing program for IV is required backed up by process control of temperatures at moulding. These pre forms are for sale but are also used in local manufacture of our own PET bottles. Also reduced shelflife for carbonated products. We also have a range of PCR recycled plastic pre forms in stock.
If it too low you will see increase wastage, scrap and downtime. IV (Intrinsic Viscosity) This is a measure of the molecular length of the polymer and is important for producing consistent quality bottles capable of meeting performance requirements. This is essentially controlled at the injection moulding stage of preforms and relates to melting temperatures of the resin.ģ. You may need to have a program for testing or certification of this parameter. AA Content: In water bottling the AA content is important since it can impart an off taste (citric) flavour from the plastic to the water. Some customers will require analysis / certification of this including heavy metal content and migration levels.Ģ. Starter Materials: You need to ensure that the PET resin used in preform manufacture is suitable and certified for contact purposes. Having said this there are a number of key areas that you need to control:ġ.
If you produce to stock then your inspection program is important to ensure you don't produce large amounts of defective PET preforms and bottles. For example, if you are blow moulding direct to the filling line (and you do not produce stock) then many issues regarding performance and quality become immediately evident at filling/capping etc and you can take action at that time. The nature of any in house facility will also determine the program you introduce. If you have in-house facilities then you need to monitor quality and safety. This is important since if you are buying them in you should not be spending too much time or money doing the job of your supplier. With us, your safety is guaranteed.You do not say whether you buy in preforms / bottles or have your own in house injection / blow moulding facility. We promise we have now the ability to offer excellent quality and reasonable price items for customers. The product will supply to all over the world, such as Europe, America, Australia,Juventus, United Kingdom,Palestine, Madras.The credibility is the priority, and the service is the vitality. Pet preform PET Bottle Preform Pet Preform Pet bottle preform Juice Bottle Preform making machine pharma bottle preform making machine Water Bottle.
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