Three-layer coextruded polyethylene label film and preparation method thereof

A polyethylene and high-density polyethylene technology, which is applied in the field of three-layer co-extruded polyethylene label film and its preparation, can solve the problems of affecting film quality and poor processing stability

CN109532177AActive Publication Date: 2019-03-29广东超维塑料薄膜有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-03-29
Patent Text Reader

Abstract

The invention relates to a printing and die-cutting three-layer film structure label material, in particular to a three-layer co-extruded polyethylene label film and a preparation method thereof. Thepolyethylene label film comprises an outer layer, an intermediate layer and an inner layer, the label film is prepared from the outer layer, the intermediate layer and the inner layer through a three-layer co-extrusion up-blowing forming process, and the blowup ratio is controlled to be 2-3.5. The outer layer is prepared from the following components in percentage by mass: 70-85% of high-density polyethylene, 10%-20% of metallocene catalyzed polyethylene and 5%-10% of low-density polyethylene, wherein the sum of the mass percentages of all the components is 100%. The intermediate layer is prepared from the following components in percentage by mass: 75-90% of high-density polyethylene and 10%-25% of metallocene catalyzed polyethylene. The inner layer is prepared from the following components in percentage by mass: 70%-90% of medium-density polyethylene and 10%-30% of low-density polyethylene. The label film provides sufficient stiffness and excellent die-cutting performance and has good vertical and horizontal balanced physical properties.
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Description

technical field

[0001] The invention relates to a printable and die-cuttable three-layer film structure label material, and in particular to a three-layer co-extruded polyethylene label film and a preparation method thereof. Background technique

[0002] When consumers choose from a wide range of similar products, product packaging is the key factor to attract consumers, and the core of product packaging is the label, which is the carrier of the brand, and whether it is exquisite or not plays a key role. With the development of economy and high technology, products are changing with each passing day, people's life tends to be more convenient and leisure, and there are higher requirements for the outer packaging of products. At present, label films in the domestic market maintain a momentum of rapid growth and are widely used, and label materials will also develop in a high-level and diversified direction. In packaging design, we should try to use the same material, material...

Examples

Embodiment 1

[0030] Take 70 parts of HDPE-HD 8660.29 high-density polyethylene produced by Exxon Mobil, 20 parts of MDPE-MD3505CH metallocene-catalyzed polyethylene produced by Exxon in the United States, and 10 parts of LDPE-LD100AC low-density polyethylene produced by Exxon Mobil Take 75 parts of HDPE-HD 8660.29 high-density polyethylene produced by Exxon Mobil and 25 parts of MDPE-MD3505CH metallocene-catalyzed polyethylene produced by Exxon in the United States as the middle layer of label film Resin: Take 70 parts of M3509 medium-density polyethylene produced by French Total and 30 parts of LDPE-LD100AC low-density polyethylene produced by Exxon Mobil as the inner layer resin of the label film.

[0031] Among them, in terms of the mass percentage of the raw material consumption of each layer in the whole polyethylene label film, the outer layer, middle layer and inner layer are 15%, 70% and 15% respectively.

[0032] Preparation process: use a three-layer co-extrusion blow molding mac...

Embodiment 2

[0034] Take 80 parts of HDPE-HD 8660.29 high-density polyethylene produced by ExxonMobil, 15 parts of MDPE-MD3505CH metallocene-catalyzed polyethylene produced by ExxonMobil, 5 parts of LDPE-LD100AC low-density polyethylene produced by ExxonMobil Take 90 parts of HDPE-HD 8660.29 high-density polyethylene produced by Exxon Mobil, and 10 parts of MDPE-MD3505CH metallocene-catalyzed polyethylene produced by Exxon in the United States as the middle layer of label film Resin: Take 80 parts of M3509 medium-density polyethylene produced by French Total and 20 parts of LDPE-LD100AC low-density polyethylene produced by Exxon Mobil as the inner layer resin of the label film.

[0035] Among them, in terms of the mass percentage of the raw material consumption of each layer in the whole polyethylene label film, the outer layer, middle layer and inner layer are 20%, 60% and 20% respectively.

[0036] Preparation process: use a three-layer co-extrusion blow molding machine, mix according to...

Embodiment 3

[0038] Take 85 parts of HDPE-HD 8660.29 high-density polyethylene produced by ExxonMobil, 10 parts of MDPE-MD3505CH metallocene-catalyzed polyethylene produced by ExxonMobil, 5 parts of LDPE-LD100AC low-density polyethylene produced by ExxonMobil Take 90 parts of HDPE-HD 8660.29 high-density polyethylene produced by Exxon Mobil, and 10 parts of MDPE-MD3505CH metallocene-catalyzed polyethylene produced by Exxon in the United States as the middle layer of label film Resin: Take 90 parts of M3509 medium-density polyethylene produced by French Total and 10 parts of LDPE-LD100AC low-density polyethylene produced by Exxon Mobil as the inner layer resin of the label film.

[0039] Among them, in terms of the amount of raw materials used in each layer in terms of the mass percentage of the entire polyethylene label film, the outer layer, middle layer and inner layer are 30%, 40% and 30% respectively.

[0040] Preparation process: use a three-layer co-extrusion blow molding machine, mi...