plastic packaging bags supplier plastic packaging bags factory plactic packaging bags

plastic packaging bags supplier plastic packaging bags factory plactic packaging bags

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Plastic packaging bags Description

Plastic packaging bags

Plastic packaging bags is a kind of packaging bags that uses plastic as raw material and is used in the production of various products in life. It is widely used in daily life and industrial production, but the convenience at this time brings long-term harm. Commonly used plastic packaging bags are mostly made of polyethylene film, which is non-toxic, so it can be used to contain food. There is also a film made of polyvinyl chloride, which itself is non-toxic, but the additives added according to the use of the film are often harmful substances and have certain toxicity. Therefore, such films and plastic bags made of the films are not suitable for containing food.

Plastic packaging bags

1.Plastic packaging bags material

Plastic packaging bags can be divided into OPP, CPP, PP, PE, PVA, EVA, composite bags, co-extrusion bags, etc. Non-toxic, compoundable, better transparency than PE, slightly worse hardness

2.A plastic bag is a container made of plastic film. About five kinds of plastic are made into plastic packaging bags

1. Polyvinyl chloride (PVC)

In the 1950s and 1960s, most plastic packaging bags in China were made of PVC. Because they contain additives to improve processability and plasticizers to improve film flexibility, these additives are toxic and unsuitable for food preservation. Therefore, apart from special non-toxic hard films for packaging, there are few other films on the market

2. Low pressure polyethylene (HDPE) HDPE film

It is typically used where high tension and impermeability are required. HDPE films are also commonly used in commercial bags, grocery bags and food packaging. In daily life, shopping bags with high strength, good waterproof performance and good impermeability are made of this material

3. High pressure polyethylene (LDPE) LDPE

The prepared films have good optical properties, strength, flexibility, sealing properties, slow odor diffusion and chemical stability. Most of the plastic packaging bags in use today are of this type due to their excellent properties and processability, as well as being non-toxic and relatively low price.

4. Polypropylene (BOPP) BOPP film

It is the abbreviation of biaxially oriented polypropylene, which is a very important flexible packaging material, colorless, odorless, non-toxic, with high tensile strength, impact strength, rigidity, strength and toughness and good transparency. After corona treatment, BOPP film has good printing adaptability and can be used for color printing to obtain good appearance, so it is often used as the surface material of composite film. Currently, BOPP is used as a packaging film for colored food and cold drinks.

5. Other plastic films: polyester, polystyrene and composite films, etc.

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