Easily-torn PE film material, and preparation method and applications thereof

Abstract

The invention relates to an easily-torn PE film material, and a preparation method and applications thereof. The easily-torn PE film material possesses a layer structure, and comprises a film layer composed of, by weight, 55 to 70% of polyethylene, 30 to 40% of an ethene cycloolefin copolymer, and 0 to 5% of a processing auxiliary agent. The easily-torn PE film material possesses a simple layer structure; cooperation of one or a plurality of material hoppers in a film blowing machine extrusion unit and a film blowing machine are adopted for one time film blowing to obtain a single layer film,double layer coextrusion film and three layer coextrusion film material, application range is widened, and package requirements of PE common package bags, paper package bags, sanitary napkin package bags, or paper diaper package bags are satisfied. The easily-torn PE film material can be torn by hands along any direction, no tearing deviation is caused, package bags can be opened without using anytools, and it is extremely convenient to use.

Description

technical field

[0001] The invention relates to the field of PE materials, in particular to an easy-to-tear PE film material and its preparation method and application. Background technique

[0002] Polyethylene (PE for short) is a kind of thermoplastic resin obtained by polymerization of ethylene, which has a wide range of uses in the field of plastics, such as PE packaging materials. Traditional PE packaging materials generally have a certain mechanical strength based on the need to protect the product. However, when consumers use it, it is difficult to open the package with bare hands, and they often need to use other sharp tools, which is inconvenient to use.

[0003] At present, in order to facilitate the opening of packaging bags, the usual practice is to design an easy-tear opening or easy-tear line, which not only increases the processing and molding process, but also increases the corresponding equipment investment, increases production costs, and is easy to pack fo...

Examples

Embodiment 1

[0071] Prepare the easy-to-tear PE single-layer film, weigh the raw materials according to Table 1, mix them evenly, and add them to the hopper of the extrusion unit of the blown film machine; raise the temperature of the die head of the blown film machine to 175-205°C, set 3-6 In the extrusion section, after the material is plasticized, the air compressor is inflated to form a film; after being cooled by the air ring, it is cut and rolled to obtain a PE single-layer film with a thickness of 0.03mm. The easy-to-tear PE film material can be torn by hand in any direction, and can be torn along a straight line in the horizontal and vertical directions without causing tear deviation. The packaging bag can be opened without borrowing any tools, which is very convenient to use.

[0072] Table 1 Single-layer film formula table %

[0073]

[0074]

Embodiment 2

[0076] The dosage of each component is shown in Table 1, the preparation method is the same as in Example 1, and the PE monolayer film is 0.05mm.

Embodiment 3

[0078] The dosage of each component is shown in Table 1, the preparation method is the same as in Example 1, and the thickness of the PE monolayer film is 0.06mm.

technical field

[0001] The invention relates to the field of PE materials, in particular to an easy-to-tear PE film material and its preparation method and application. Background technique

[0002] Polyethylene (PE for short) is a kind of thermoplastic resin obtained by polymerization of ethylene, which has a wide range of uses in the field of plastics, such as PE packaging materials. Traditional PE packaging materials generally have a certain mechanical strength based on the need to protect the product. However, when consumers use it, it is difficult to open the package with bare hands, and they often need to use other sharp tools, which is inconvenient to use.

[0003] At present, in order to facilitate the opening of packaging bags, the usual practice is to design an easy-tear opening or easy-tear line, which not only increases the processing and molding process, but also increases the corresponding equipment investment, increases production costs, and is easy to pack fo...

Examples

Embodiment 1

[0071] Prepare the easy-to-tear PE single-layer film, weigh the raw materials according to Table 1, mix them evenly, and add them to the hopper of the extrusion unit of the blown film machine; raise the temperature of the die head of the blown film machine to 175-205°C, set 3-6 In the extrusion section, after the material is plasticized, the air compressor is inflated to form a film; after being cooled by the air ring, it is cut and rolled to obtain a PE single-layer film with a thickness of 0.03mm. The easy-to-tear PE film material can be torn by hand in any direction, and can be torn along a straight line in the horizontal and vertical directions without causing tear deviation. The packaging bag can be opened without borrowing any tools, which is very convenient to use.

[0072] Table 1 Single-layer film formula table %

[0073]

[0074]

Embodiment 2

[0076] The dosage of each component is shown in Table 1, the preparation method is the same as in Example 1, and the PE monolayer film is 0.05mm.

Embodiment 3

[0078] The dosage of each component is shown in Table 1, the preparation method is the same as in Example 1, and the thickness of the PE monolayer film is 0.06mm.

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