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A composite film suitable for quick gusset bag making

A technology of composite film and edge insertion, applied in the field of composite film, to reduce direct economic loss, protect the contents, and ensure the first pass rate

Active Publication Date: 2021-05-04
HUANGSHAN NOVEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The PE / VMPE structure composite film of the traditional formula is generally made into bags by heat sealing (that is, the composite film is sealed in the form of strips), but if the production process of hot-cutting is used (that is, the composite film is sealed in the form of lines), the traditional formula The composite film with PE / VMPE structure has a certain risk of pressure resistance after ironing and trimming

Method used

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  • A composite film suitable for quick gusset bag making
  • A composite film suitable for quick gusset bag making
  • A composite film suitable for quick gusset bag making

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Embodiment Construction

[0020] Below in conjunction with embodiment technical solution of the present invention is made more specific description:

[0021] Raw material sources are shown in table 1 below in the following examples:

[0022] Table 1

[0023]

[0024] The formula composition of the aluminized polyethylene film in the composite film in the following examples is as shown in table 2 below:

[0025] Table 2

[0026]

[0027]

[0028] Composite film of the present invention is prepared according to above formula, and concrete preparation method is as follows:

[0029] Step 1, preparation of aluminized polyethylene film

[0030] Preparation of polyethylene film: Add the raw materials in the aluminum-coated outer layer, middle layer and inner layer into the barrel of a co-extrusion blown film machine for melting and co-extrusion, and then undergo film blowing cooling, plywood foaming, corona, trimming, The polyethylene film is obtained by winding treatment; the melting temperature...

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Abstract

The invention relates to a composite film suitable for fast edge-inserting bag making. The composite film is composed of a polyethylene film and an aluminized polyethylene film. The aluminized polyethylene film is composed of an aluminized outer layer, a middle layer and an inner layer; the weight formula of the aluminized outer layer is: 79‑80% Metallocene linear low density polyethylene, 19.5‑20.5% high pressure copolymer of ethylene and methacrylic acid or acrylic acid and 0.4‑0.6% additives; middle layer weight formula consisting of: 39‑41% linear low density polyethylene and 59‑ 61% High Density Polyethylene; inner layer weight formula consisting of: 44‑46% Linear Low Density Polyethylene, 49‑51% Toughener and 4.5‑5.5% Auxiliary. In this application, by improving the composition formula of the aluminized polyethylene film, the strength of the hot-cut edge of the composite film has been significantly improved, ensuring the pressure resistance of the composite film after the hot-cut edge, that is, the formed packaging bag can be filled The contents are not easy to fry the bag.

Description

technical field [0001] The invention belongs to the field of film materials, and in particular relates to a composite film suitable for fast edge-inserting bag making. Background technique [0002] With the rapid development of the material market, in the hygiene material packaging industry, the packaging material structure and packaging form of hygiene material products are showing a trend of diversification, and with the increasingly severe environmental protection requirements, the sustainable development of packaging materials is imminent. It is under this high pressure that a new material packaging structure emerges at the historic moment - PE composite VMPE structure. [0003] Compared with ordinary PE / PE structure products on the market, PE / VMPE has a certain grade effect. Under the premise of improving product quality, by improving product packaging structure or functional packaging, it is conducive to the formation of new products in the development stage. Contrast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/08B32B27/18B32B33/00
CPCB32B27/08B32B27/18B32B27/32B32B33/00B32B2255/10B32B2255/205
Inventor 胡忠立汪学文胡鸿波
Owner HUANGSHAN NOVEL
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