1. Raw material selectionThe main raw materials of plastic water cups are petrochemical plastics, including polyethylene (PE), polypropylene (PP) and other materials. These plastic materials have excellent impact resistance, transparency, processability and other characteristics, and are very suitable for the production of water cups. When selecting raw materials, in addition to considering physical properties, environmental factors also need to be considered.
2. Processing and forming
1. Injection molding
Injection molding is the most commonly used production process for plastic water bottles. It injects molten plastic material into a mold and forms a molded product after cooling and solidification. The water cup produced by this method has a smooth surface and precise dimensions, and can also realize automated production.
2. Blow molding
Blow molding is one of the more common molding methods. It pressurizes and blows the initially formed tubular part in the die, causing the tubular part to expand and form in the die, and then cuts and pulls it out. However, the blow molding process has high requirements on raw materials, low production efficiency, and is not suitable for mass production.
3.Thermoforming
Thermoforming is a relatively simple production process suitable for small-scale production. It puts the heated plastic sheet into the mold, heat-presses the plastic sheet through the machine, and finally performs subsequent processes such as cutting and shaping.
3. Printing and packagingAfter the water cup is produced, it needs to be printed and packaged. Printing usually uses ink printing, and custom patterns, logos, text, etc. can be printed on water cups. Packaging usually includes box packaging and transparent film packaging for easy storage and transportation.
4. Commonly used production equipment
1. Injection molding machine: used for injection molding
2. Blow molding machine: used for blow molding
3. Thermoforming machine: used for thermoforming
4. Printing machine: used for printing water cups
5. Packaging machine: used for packaging and sealing water cups
5. Conclusion
The above is the production process of plastic water cups. During the production process, it is also necessary to strictly control the production links to ensure product quality and environmental protection standards. At the same time, as people’s awareness of environmental protection continues to increase, alternatives to plastic water cups are constantly emerging. The future development direction of the water cup industry is also worth exploring.
Post time: Jul-08-2024