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Extrusion type lamination process for preparing composite film

A composite process and composite film technology, applied in the direction of lamination device, lamination auxiliary operation, lamination, etc., can solve the problem of low fastness of composite film, improve the coloring effect, shorten the time used, and strengthen the firmness. Effect

Inactive Publication Date: 2016-05-18
SICHUAN HUILI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an extrusion compounding process for preparing a composite film, so as to solve the problem that the existing composite film preparation process easily leads to low fastness of the composite film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The extrusion composite process for preparing composite film comprises the following steps:

[0037] 1) Preparation of film: Mix the raw materials for film preparation in proportion and then make film by blowing film, pressing film and trimming;

[0038] 2) Extrusion compounding: the film A is coated with adhesive under the action of the pressure roller, dried and solidified, the thermoplastic is melted in the extruder, and flows out in the form of a film from the flat die, and is placed on the rubber roller The film-like material that is continuously conveyed between the cooling metal roller and the film A and film B is pressed and solidified to form a composite film; the adhesive is composed of the following components in weight percentage: 40% solid content, and the balance is deionized water, the adhesive is an isocyanate adhesive; the drying temperature is 160°C; the curing temperature is 60°C;

[0039] 3) Printing of the composite film: the composite film is prin...

Embodiment 2

[0047] The extrusion composite process for preparing composite film comprises the following steps:

[0048] 1) Preparation of film: Mix the raw materials for film preparation in proportion and then make film by blowing film, pressing film and trimming;

[0049] 2) Extrusion compounding: the film A is coated with adhesive under the action of the pressure roller, dried and solidified, the thermoplastic is melted in the extruder, and flows out in the form of a film from the flat die, and is placed on the rubber roller The film-like material that is continuously conveyed between the cooling metal roller and the film A and film B is pressed and solidified to form a composite film; the adhesive is composed of the following components in weight percentage: 50% solid content, and the balance is deionized water, the adhesive is an isocyanate adhesive; the drying temperature is 200°C; the curing temperature is 100°C;

[0050] 3) Printing of the composite film: the composite film is pri...

Embodiment 3

[0058] The extrusion composite process for preparing composite film comprises the following steps:

[0059] 1) Preparation of film: Mix the raw materials for film preparation in proportion and then make film by blowing film, pressing film and trimming;

[0060] 2) Extrusion compounding: the film A is coated with adhesive under the action of the pressure roller, dried and solidified, the thermoplastic is melted in the extruder, and flows out in the form of a film from the flat die, and is placed on the rubber roller The film-like material continuously conveyed between the cooling metal roller and the film A and film B is pressed and solidified to form a composite film; the adhesive is composed of the following components in weight percentage: 45% solid content, and the balance is deionized water, the adhesive is an isocyanate adhesive; the drying temperature is 180°C; the curing temperature is 80°C;

[0061] 3) Printing of the composite film: the composite film is printed with p...

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Abstract

The invention discloses an extrusion type lamination process for preparing a composite film, which comprises the following steps of: (1) film preparation; (2) dry lamination: coating a film A with an adhesive under the action of a roller, drying, curing, and forming a composite film with a film B under the action of the roller; (3) composite film printing: printing print ink on the composite film through a printing machine; (4) irradiating the print ink with ultraviolet rays emitted by a first group of ultraviolet lamps of the printing machine to have crosslinking reaction between the print ink and a printing layer; (5) irradiating the print ink with ultraviolet rays emitted by a second group of ultraviolet lamps of the printing machine to cure the printing layer on the composite film; (6) drying the printing layer with an infrared ray dryer arranged on the printing machine; and (7) carrying out UV glazing on the dried printing layer with an UV glazing device arranged on the printing machine. By adopting the extrusion type lamination process, the problem that the composite film prepared by adopting the existing composite film preparation process is low in fastness is solved.

Description

technical field [0001] The invention relates to the technical field of pharmaceutical packaging, in particular to an extrusion composite process for preparing composite films. Background technique [0002] In the pharmaceutical industry, it involves packaging the prepared medicines. The packaging mainly includes bags and aluminum foil boards. No matter what kind of packaging is used, it involves the preparation of composite films and the printing process. [0003] The preparation of the composite film is to compound and solidify the single-layer film through the printing process and then through the dry composite process or the extrusion composite process to form a composite film. [0004] The printing process is to print some product information on the composite film used for packaging to facilitate the identification and use of pharmaceuticals. The equipment used in the printing process mainly includes the printing machine, the winding device, and the ink that cooperates ...

Claims

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Application Information

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IPC IPC(8): B32B37/15B32B38/00B32B38/16B32B37/10B32B37/08B32B38/14
CPCB32B37/153B32B37/08B32B37/10B32B38/00B32B38/14B32B38/145B32B38/164B32B2038/0076
Inventor 彭启源肖世才
Owner SICHUAN HUILI IND
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