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Plastic jars have not appeared for a long time, but they have developed very rapidly. In many cases, they have replaced metal cans and glass bottles, mainly because they have many advantages:

(1) Light weight. The density of materials used to make plastic jars is small, and plastic jars are smaller than metal jars and glass bottles according to the same volume and quality of containers.

(2) Low cost. The material cost of plastic jars is lower and the manufacture is easier, so the total price is cheaper.

Reliable protection of products. The tank body is made of a variety of materials, which has good chemical stability and barrier. The combination of bottom, cover and tank body adopts reliable sealing structure, so the inner contents can be reliably protected.

The mechanical strength is good. Although the mechanical properties of plastic jars are slightly lower than those of metal jars and glass bottles, they are sufficient for general packaging products and rarely cause strength damage.

The shelf effect is good. The surface of plastic jars is easy to print and decorate, which is good for attracting customers and promoting sales.

Plastic jars also have some shortcomings: for example, the sealing quality between the bottom cover and the tank body is still unstable; when vacuum packaging and pressure packaging are carried out, the strength of the tank body is sometimes not high enough.

As a new type of packaging container, plastic jars are widely used in the packaging field.

INTRODUCTION OF PLASTIC JARS

FEATURES AND ADVANTAGE OF PLASTIC JARS

1. Light weight. The material density of clear plastic jars is smaller than that of metal cans and glass bottles.

2. Low cost. The material cost of plastic jars is lower and the work for plastic jars manufacturers is easier, so the total price is lower.

3. Reliable protection of products. The tank body is made of a variety of composite materials, with good chemical stability and barrier; the combination of its bottom, cover and tank body adopts a reliable sealing structure, so it can reliably protect the contents.

4. Good mechanical strength. Although the mechanical properties of plastic jars are slightly lower than those of metal cans and glass bottles, they are enough for general products in packaging, and it rarely causes strength damage.

5. Good shelf effect. The surface of plastic jars is easy to print and decorate, which is good for attracting customers and promoting plastic jars wholesales.

TYPES OF PLASTIC JARS

The difference between plastic jars mainly lies in the tank body, which can be divided into two categories according to its composition and structure:

1. Laminated composite tank. It is made of several materials, such as plastic film, aluminum foil, cardboard, etc. into composite materials, and then extruded into a tank body, which is mostly square with rounded corners. The bottom cover is mostly plastic, which is connected with the tank body by high frequency fusion sealing.

2. Multi-layer material winding tank. It uses a variety of materials to make into a cylinder by winding, and then is cut into a tank body according to the requirements, and then is respectively connected with a tank bottom and a tank cover.

APPLICATION OF PLASTIC JARS

For the packaging of food cans, clear plastic jar is used more and more frequently in the market at present, from the wide mouth pickle food cans to the easily opened beverage food cans. All of these show that food can packaging has a great application in the market.

In the future, in addition to the field of food, medicine, cosmetics and other products are believed to be more and more in the form of can packaging. The success of food cans is a good cut in for can manufactures.

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