![]() ![]() But if injecting too fast, the shear rate would be so high that the material would become fragile easily. Generally, injection speed must be fast, in order to prevent premature solidification. The temperature is ranging from 270 Celsius degree to 295 Celsius degree and the enhanced GF – PET’s temperature can be set from 290 Celsius degree to 315 Celsius degree, etc. It can be measured by the air injection method. There is enough exhausting effect for it so as not to appear local overheating or chipping, but the vent’s depth is generally not more than 0.03 mm, otherwise, it is easy to produce flashing. Insulation board’s thickness is about 12 mm, and can bear high pressure. It is better to have an insulation board between mold and injection molding machine template. We generally use hot runner mold to design PET bottle preform. PET can only be stable for a short time after the melting point, and the melting point is so high, which needs to choose the injection system which has more temperature-control periods and less friction heat when plasticizing, and the product’s (the material which contains water) actual weight cannot be less than two-thirds of the amount of machine injection. The proportion of recycled material is generally not more than 25%, and the recycled material needs to be completely dried. We can use air injection method to examine whether the material is completely dry or not. Therefore, we need to dry the material at 150 Celsius degree for more than 4 hours and 3 to 4 hours at 170 Celsius degree before processing. When the water content exceeds the limit, the molecular weight of the PET will drop during the processing, so the product will be colored and become crisp. The aggregate is very sensitive to water when it’s at a high temperature. Plastic dryingĭue to PET macromolecule contains an aliphatic base, it has certain hydrophilicity. Therefore, we change the rheological property mainly from the pressure. PET has a good rheological property in molten condition and pressure has more effects on viscosity than temperature does. PET injection molding parts are mostly used in the bottle preform products At present, GF-PET is used by most clients. The chemical name of PET is poly terephthalic acid alcohol ester, also called polyester. The injection techniques of poly terephthalic acid alcohol ester (PET) The injection techniques of poly terephthalic acid alcohol ester (PET).Approval of the blowing mould as compliant with agreed requirements.Verifying dimensions of the physical bottle’s samples with dimensions given on the drawing accepted by the client, including verifying filling level.Tests of the blowing moulds on the blowing machine.CNC production and hand polishing of all components.Writing a program for CNC machines that will allow to accurately reflect the shape and dimensions of bottle in accordance with the approved drawing.Preparing 3D assembly drawing of a complete blowing moulds including all parts needed to install mould on the machine and ordering special type of aluminum according required dimensions.3D model the blowing mould -with the possibility of 3D bottle printing.Preparing corrections of the bottle project in references to customer’s remarks, preparing of subsequent versions of the bottle drawing according to the customer’s remarks, up to the development of a design that meets the customer’s expectations.Bottle shape design – making drawings of the bottle with its visualization and dimensions.Selection of best preform available on the market (shape, weight, supplier).Develop, together with the customer, concept of optimal bottle shape.Works on new concept for PET bottles & new blowing mould is divided into following steps: New concept for PET bottles & new blowing mould We will provide you solution for your PET bottles so it can be successfully produced on SMF blowing machines. Share with us your ideas and we will help you to make it true. Not only we can make design for the PET bottles, but also we produce complete blowing molds – either for new projects or old SMF blowing machines – any time you need refresh visual presentation of your product or you want add new products to you product’s range. SMF designers will help you to develop best concept for the bottle design which ensure perfect presentation of your product and has got all key features of perfect packaging. it has to be durable during transport Design of PET bottles and more.it has to be also convenient storage, handling and logistic.it is also part of the product’s total cost so it affects final price.it is also one of the key tools of the marketing of the product.Product packaging is not only the packaging as such but also: Customized solutions: PET bottles – blowing moldsĭesign of the bottle shape has to be customized to the buyer’s needs & market requirements. ![]()
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