PET bottle making machine is an automated production equipment used for producing polyester bottles. Due to the advantages of high strength, high transparency, good sealing, and high temperature resistance, PET bottles have been widely used in industries such as food, beverage, and medicine. Sinco will introduce the principle, process flow, production process, and technical points of PET bottle making machine 2000-10000BPH to you.
1、 Principles of PET bottle making machine
The PET bottle making machine adopts injection molding technology, and its working principle is mainly divided into the following steps:
Feeding: Add PET resin particles into the hopper and transport them to the heating cylinder through a screw.
Heating: PET resin particles are heated to a molten state in a heating cylinder, with a temperature generally between 260 ℃ and 285 ℃.
Injection: Inject molten PET resin into a mold that contains the shape of the bottle.
Blow molding: After injection molding, the bottles in the mold are blown into shape through high-pressure air.
Cooling: The blow molded bottle is cooled with cooling water to quickly harden.
Remove: Remove the bottle from the mold, check its quality, and proceed with the next step of processing.
2、 PET bottle making machine process flow
The production process of PET bottle making machine mainly includes the following steps:
Raw material preparation: PET resin is the main raw material for PET bottle making machine production, usually in the form of granules. Before production, it is necessary to dry the PET resin to ensure that its moisture content is below 0.02%. At the same time, a certain amount of color masterbatch, additives, etc. need to be added according to production requirements.
Feeding: Add PET resin particles into the hopper and transport them to the heating cylinder through a screw.
Heating: PET resin particles are heated to a molten state in a heating cylinder, with a temperature generally between 260 ℃ and 285 ℃.
Injection: Inject molten PET resin into a mold that contains the shape of the bottle.
Blow molding: After injection molding, the bottles in the mold are blown into shape through high-pressure air.
Cooling: The blow molded bottle is cooled with cooling water to quickly harden.
Remove: Remove the bottle from the mold, check its quality, and proceed with the next step of processing.
Inspection: Inspect the appearance, size, weight, and other aspects of the removed bottle.
Packaging: The bottles that pass the inspection will be packaged and stored in the warehouse, waiting for the next step of production and use.
3、 Production process of PET bottle making machine
The production process of PET bottle making machine mainly includes the following aspects:
Raw material preparation: The main raw material for PET bottle making machine production is PET resin particles, so it is necessary to select high-quality PET resin particles and dry them. At the same time, add color masterbatch, additives, etc. according to production requirements.
Heating: PET resin particles are heated to a molten state in a heating cylinder, with a temperature generally between 260 ℃ and 285 ℃.
Injection: Inject molten PET resin into a mold that contains the shape of the bottle.
Blow molding: After injection molding, the bottles in the mold are blown into shape through high-pressure air.
Cooling: The blow molded bottle is cooled with cooling water to quickly harden.
Remove: Remove the bottle from the mold, check its quality, and proceed with the next step of processing.
Inspection: Inspect the appearance, size, weight, and other aspects of the removed bottle.
Packaging: The bottles that pass the inspection will be packaged and stored in the warehouse, waiting for the next step of production and use.
4、 Technical points of PET bottle making machine
The following technical points need to be noted during the production process of PET bottle making machine:
Plasticization temperature: The plasticization temperature of PET resin is generally between 260 ℃ and 285 ℃, which needs to be adjusted according to the actual production situation.
Mold design: The mold design of PET bottle making machines needs to consider factors such as the shape, size, and wall thickness of the bottles to ensure that the bottles are qualified.
Mold manufacturing: The mold manufacturing of PET bottle making machines requires the use of high-precision CNC processing equipment to ensure the accuracy and quality of the mold.
Blow molding parameters: During the blow molding process, appropriate blow molding parameters need to be set based on the shape and size of the bottle to ensure