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Preparation method of environment-friendly aluminum-plated composite membrane

A technology of aluminized composite film and aluminized film, which is applied in chemical instruments and methods, lamination devices, lamination auxiliary operations, etc. The effect of reducing the amount of adhesive and improving the composite strength and tensile strength

Inactive Publication Date: 2014-10-29
梧州市广川科技发展有限公司
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  • Summary
  • 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 the packaged contents, but also produce a large amount of waste solvents, which will affect the ecological environment and human health.

Method used

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  • Preparation method of environment-friendly aluminum-plated composite membrane
  • Preparation method of environment-friendly aluminum-plated composite membrane
  • Preparation method of environment-friendly aluminum-plated composite membrane

Examples

Experimental program
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Effect test

preparation example Construction

[0025] The invention provides a method for preparing an environment-friendly aluminized composite film, comprising the following steps:

[0026] a) Coating a solvent-free adhesive to the aluminum surface of the aluminized film, the glue amount of the solvent-free adhesive is 2.2g / m 2 ~2.5g / m 2 , the unwinding tension of the aluminized film is 13N~18N;

[0027] b) composite the aluminized film obtained in step a) with the outer layer film, the composite tension of the compound is 40N to 45N, and the unwinding tension of the outer layer film is 4N to 7N;

[0028] c) winding the composite film obtained in step b), and performing aging treatment on the rolled composite film to obtain an environment-friendly 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 al...

Embodiment 1

[0054] Using aluminized polyester film (VMPET) as the base material, apply a two-component polyurethane adhesive on the surface of the aluminum layer of the VMPET film, the coating temperature is 40°C, and the amount of glue applied is 2.2g / m 2 , the unwinding tension of the VMPET film is 18N; the VMPET film coated with the adhesive is compounded with the PE film to obtain a composite film, the composite tension is 40N, and the unwinding tension of the PE film is 4N; 5%; the composite film after winding was cured for 22 hours at a humidity of 40RH% and a temperature of 40°C to obtain a 12VMPET / 40PE composite film;

[0055] 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 amount of glue is 2.0g / 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 obta...

Embodiment 2～5

[0060] Prepare the 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 2. The composite strength of the obtained composite film is shown in Table 2. Table 2 is Example 2 of the present invention. ~5 provides the data table of the glue amount and composite strength of the composite film.

[0061] Table 3 The data table of the amount of gluing and the composite strength of the composite film provided by Examples 2 to 5 of the present invention

[0062]

[0063]

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Abstract

The invention provides a preparation method of an environment-friendly aluminum-plated composite membrane. The method comprises the following steps: a. coating the aluminum surface of an aluminum-plated membrane with a solvent-free adhesive, wherein the gluing amount of the solvent-free adhesive is 2.2g / m<2>-2.5g / m<2>, and the unwinding tension of the aluminum-plated membrane is 13N-18N; b. compositing the aluminum-plated membrane with an outer membrane layer, wherein the composting tension is 40N-45N and the unwinding tension of the outer membrane layer is 4N-7N; and c. winding the composite membrane obtained in the step b and curing the wound composite membrane to obtain the environment-friendly aluminum-plated composite membrane. The gluing amount, the unwinding tension of the aluminum-plated membrane, the unwinding tension of the outer membrane layer, and the composting tension of the aluminum-plated membrane and the outer membrane layer are controlled to obtain the environment-friendly aluminum-plated composite membrane with good compositing strength and without aluminum-layer transferring or solvent residue.

Description

technical field [0001] The invention belongs to the technical field of packaging films, and in particular relates to a preparation method of an environment-friendly aluminized 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. Because of its good metallic luster, It is widely used in the outer packaging of food, health care products, medicine and cosmetics due to its good barrier properties, convenience and low price, especially in dry and puffed foods. [0003] The prior art generally adopts the method of dry lamination to compound the aluminized film and the transparent plastic film to obtain the aluminized composite film. The dry lamination method is also called dry lamination. The process includes: coating the base film with solvent The adhesive is passed through a ...

Claims

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Application Information

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IPC IPC(8): B32B37/12B32B38/18
Inventor 不公告发明人
Owner 梧州市广川科技发展有限公司
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