Preparation method of aluminum plating composite film

A technology of aluminum-coated composite film and aluminum-coated film, which is applied in chemical instruments and methods, lamination devices, lamination auxiliary operations, etc., can solve problems such as solvent residues, a large amount of waste solvents, and impacts on the ecological environment and human health. Good composite strength and tensile strength effect

Active Publication Date: 2013-05-22
HUANGSHAN NOVEL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dry lamination method generally uses solvent-based adhesives, which will not only produce solvent residues and pollute...

Method used

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  • Preparation method of aluminum plating composite film
  • Preparation method of aluminum plating composite film
  • Preparation method of aluminum plating composite film

Examples

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preparation example Construction

[0024] The invention provides a kind of preparation method of aluminized composite membrane, comprises the following steps:

[0025] Coating a solvent-free adhesive to the aluminum surface of the aluminized film, the glue amount of the solvent-free adhesive is 2.6g / m 2 ~3.0g / m 2 ;

[0026] Composite the aluminized film coated with the solvent-free adhesive and the outer film, and the composite tension during the composite is 45N~55N;

[0027] The obtained composite film is wound up;

[0028] The rolled composite film is subjected to aging treatment to obtain an aluminized composite film.

[0029] In the invention, firstly, the solvent-free adhesive is coated on the surface of the aluminum layer of the aluminized film, and then the aluminized film coated with the solvent-free adhesive is combined with the outer layer film, and the aluminized composite film is obtained after winding and aging treatment. The invention obtains an aluminum-coated composite film with good compos...

Embodiment 1

[0053] Using aluminized polyester film (VMPET) as the base material, apply two-component polyurethane adhesive on the surface of the aluminum layer of the VMPET film, the coating temperature is 50°C, and the amount of glue is 2.6g / m 2 , the unwinding tension of the VMPET film is 12N; the VMPET film coated with the adhesive is compounded with the PE film to obtain a composite film, the composite tension is 50N, and the unwinding tension of the PE film is 3N; 10%; the composite film after winding was cured for 30h at a humidity of 45RH% and a temperature of 50°C to obtain a 12VMPET / 40PE composite film;

[0054] Using the 12VMPET / 40PE composite film as the base material, apply a two-component polyurethane adhesive on the surface of the PET layer of the VMPET film, the coating temperature is 50°C, and the glue amount is 1.1g / m 2 , the unwinding tension of the composite film is 18N; the composite film coated with the adhesive is compounded with the PET film to obtain a composite fi...

Embodiment 2~9

[0073] Prepare 12PET / 12VMPET / 40PE composite film according to the raw materials, methods and steps provided in Example 1. The difference is that the amount of gluing is controlled according to Table 3. The composite strength of the obtained composite film is shown in Table 3. Table 3 is Example 2 of the present invention. ~9 Glue amount and composite strength of the composite film provided.

[0074] Table 3 The amount of gluing and the composite strength of the composite film provided by Examples 2 to 9 of the present invention

[0075]

[0076] In Table 3, in the composite films prepared in Examples 6-9, the aluminum layer transfer phenomenon appeared in the PET / VMPET layer.

[0077] In the invention, firstly, the solvent-free adhesive is coated on the surface of the aluminized film, and then the aluminized film coated with the solvent-free adhesive is combined with the outer layer film, and the aluminized composite film is obtained after winding and aging treatment. The ...

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Abstract

The invention provides a preparation method of an aluminum plating composite film. The preparation method comprises the following steps of: coating a solventless adhesive onto the aluminum surface of an aluminum plating film, wherein the gluing quantity of the solventless adhesive is 2.6-3.0g/m<2>; compounding the aluminum plating film coated with the solventless adhesive with an external film, wherein the compound tension during compounding is 45-55N; rolling the obtained compound film; and curing the rolled compound film to obtain the aluminum plating composite film. By controlling the gluing quantity of the solventless adhesive to be 2.6-3.0g/m<2> and controlling the compound tensions of the aluminum plating film and the external film to be 45-55N, the obtained aluminum plating composite film is provided with good compounding strength and tensile strength when the adhesive dosage is reduced at the same time. As no solvent is used and basically no solvent residue is generated, the preparation method of the aluminum plating composite film disclosed by the invention has little effect on the packaged contents, ecological environment and human health.

Description

technical field [0001] The invention belongs to the technical field of packaging films, in particular to a method for preparing an aluminum-plated composite film. Background technique [0002] Aluminized composite film is a flexible packaging material with aluminum luster and good barrier properties formed by compounding aluminized film such as VMPET, VMBOPP, VMCPP or VMPE and transparent plastic film. It has good metallic luster, good Barrier performance, convenience, low price and other advantages, it is widely used in the outer packaging of food, health care products, medicine and cosmetics, especially in dry and puffed food. [0003] The prior art generally adopts the method of dry compounding to compound the aluminized film and the transparent plastic film to obtain the aluminized composite film. For example, the Chinese patent document with the application number 200510060970.1 discloses a manufacturing process of a high-barrier aluminized composite film. Evaporate a ...

Claims

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Application Information

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IPC IPC(8): B32B37/12B32B38/18
Inventor 江继忠鲍祖本方秀华潘健张和平陈旭
Owner HUANGSHAN NOVEL
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