Jul 03, 2025
What is the difference between rigid plastic and flexible plastic?
1. Rigid plastic
Currently, plastic packaging is becoming more and more popular because plastic can be freely shaped as desired. There are many types to choose from, depending on suitability, light weight and cheap.
Which can be divided into 2 types: plastic bottles and plastic cups and trays.
1.1 Plastic bottles are hollow containers made from HDPE, PET, PP, etc., molded by blow molding, injection blow molding or stretch blow molding.
Popular plastic bottles include:
- HDPE bottles for fresh milk, yogurt, fruit juice, drinking water, etc.
- PET bottles for drinking water, soft drinks, fruit juice, honey, wine, liquor, sake, vegetable oil and many more.
- PP bottles for syrup, fruit juice, etc.
- Multi-layer plastic bottles. Popular plastics are PP/EVOH/PP, used for sauces, mayonnaise, and bread spreads that need to be stored for a long time and can be squeezed (used instead of glass bottles).
1.2 Plastic cups and trays are produced by the hot molding process from plastic sheets. There are 5 types:
♥EPS foam trays
- Not porous, light weight, the base of the tray is usually a small square grid. To increase strength and support the water part
- Egg trays made of foam can reduce damage from breaking by 50 percent when compared to using paper pulp trays
♥PS trays and cups
- Pack fresh food, frozen food and eggs as well as foam trays
- Pack various snacks such as cookies, crispy pastries to prevent breakage
- Pack chocolate before packing in another layer of paper boxes
- Pack ice cream, yogurt, instant noodles
♥PP trays and cups
♥PET trays
- Pack ready-to-eat food that needs to be heated in a normal oven and a microwave oven. Multi-layer plastic cups and trays
♥Trays made of multi-layer plastic such as PS / PP, PS / EVOH / PS, PS / EVOH / PP are new technologies that have been developed
to be able to preserve product quality for a longer period of time to be able to preserve product quality for a longer period of time
2. Flexible plastic
Made from plastic film, which may be of the same type or laminated with other materials. Most of this type of plastic is used in the form of plastic bags
2.1 Plastic bags
♥Ready-made bags ready to pack products
- Single-sided sealed bags, which are sealed on only one side of the bottom of the bag No seams on the sides and no seams
- Double-sealed bags have 2 types: sealed on 2 sides, the bottom of the bag is folded, meaning the bottom of the bag has no seams
- Three-sided sealed bags are bags that are sealed on both sides and the bottom of the bag. The bottom of the bag may have a zipper or an extension
♥Bag obtained by forming and packing with an automatic machine
This type of bag is made from a roll of plastic film that is formed, then filled with products and sealed with
Summary
- Stable plastic is divided into 2 types: plastic bottles, cups and plastic trays. Plastic such as HDPE, LDPE, PVC, PP, etc., is formed by extrusion, injection blowing or stretch blowing. It is mostly used for packing food.
- Flexible plastic This type of plastic is used in the form of plastic bags, which come in many shapes and colors for customers to choose from.
If you are looking for certified food quality plastic bottles for your business but are still unsure about choosing the right packaging, feel free to consult with us at Chino Plaspack Co., Ltd. We are a manufacturer of various types of plastic packaging made from a wide range of materials. We are happy to provide advice on selecting the most suitable packaging for your products. Additionally, we offer services for designing or creating new molds, as well as labeling and label application, providing a complete solution to meet all your packaging needs.
Moreover, at Chino Plaspack Co., Ltd., we also produce packaging made from various types of plastics. You can explore our services [here].