Classification of milk tea cups
There are two main types of milk tea cups on the market: paper cups and plastic cups. Plastic milk tea cups are divided into injection-molded milk tea cups and blister milk tea cups. The different processes of each Plastic Milk Cups Suppliers' plastic milk tea cup are described in detail below.

The production process of plastic milk tea cups
Disposable plastic milk tea cups, or disposable plastic cups, injection cups. The raw material is polypropylene (PP for short), which is currently the most used milk tea cup. PP cups are the most commonly used specifications in milk tea shops. PP milk tea cups are suitable for most feel and quality requirements. The two main processes for producing plastic milk tea cups are blister and injection molding.

Blister production process
The blister production process is to pull polypropylene plastic particles into sheets, roll them up layer by layer, and then use a forming machine to press the sheets into cups. Foaming is particularly fast and yields are high. The disadvantage is that it is relatively thin and easy to deform. Cutting and sealing require separate equipment for re-sealing and requires secondary processing, which increases the difficulty of hygiene. Therefore, all the milk tea shops on the market currently use blister milk tea cups.

pp milk tea cup
Injection molding process
The injection-molded milk tea cup is produced by an injection molding machine. The production principle is that raw polypropylene particles are melted at high temperature in the screw of the injection molding machine, and then injected into the film cavity. Once the molten plastic enters the mold, it is formed into a certain shape according to the mold cavity. The resulting shape is usually the final product, i.e. one-shot injection molding. No additional treatment is required before use or use as a final product. Many details, such as protrusions, ribs and threads, can be formed in one step of injection molding. An injection molding machine has two basic parts: the injection unit and the clamping unit that melts the plastic and feeds it into the mold.

For more product-related information, please click: Plastic Packaging Containers