Which plastic water cup pp pc pe material is better?

The material selection of plastic water cups should be determined according to the actual situation. The following is a detailed introduction to the three materials of PP, PC and PE:

1. PP material

Plastic water cups made of PP are usually lighter and have good heat resistance and It is cold-resistant and does not release harmful substances. It is more suitable for holding hot or cold drinks. In addition, water bottles made of PP are relatively durable, not easy to break, and can be recycled multiple times.

2. PC material

PC plastic water cups have good transparency and toughness, are not easy to break, and are more suitable for use in homes, hotels and other occasions. However, water cups made of PC may release substances harmful to the human body under high temperature conditions and are not suitable for holding hot drinks.

3. PE material

PE plastic water cups are mainly used for short-term use, such as disposable tableware, because the PE material is relatively fragile, easy to break, and is not suitable for Pack hot drinks.

The manufacturing process of plastic cups usually includes the following steps:

Material preparation: raw materials, polypropylene (PP), polyethylene (PE), etc.

1. Place the prepared plastic raw materials in equipment such as injection molding machines, blow molding machines or thermoforming machines for processing. The specific operations vary according to different processing methods.

2. Heat the plastic particles or sheets to a molten state, then inject the molten plastic into the mold through an injection molding machine, wait for cooling and solidification, and then take out the plastic cup.

3. Heat the plastic particles to a molten state, then inject the molten plastic into the prefabricated mold through a blow molding machine, blow air through air pressure to expand the plastic thin wall into a cup shape, and finally take out the plastic cup.

4. Heat the plastic sheet or film to a plastic state, then attach the plastic sheet to the mold through a thermoforming machine. After cooling, peel off the mold to obtain a plastic cup.

5. After the finished plastic cup is cooled, it may need to undergo some subsequent processing steps, such as removing corners, cleaning the surface, printing or labeling, etc., in order to achieve the final appearance and appearance of the plastic cup. quality requirements.