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Barrier film and laminated material, container for wrapping and image display medium using the same, and manufacturing method for barrier film

a technology of barrier film and laminated material, which is applied in the direction of water-setting substance layered products, natural mineral layered products, synthetic resin layered products, etc., can solve the problems of harmful dioxin, oxygen and water vapor barrier properties are not sufficient, and the barrier property is remarkably reduced, so as to achieve high barrier properties and improve transparency

Inactive Publication Date: 2005-07-28
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009] The present invention has been achieved in order to solve the above problems. It is an object of this invention to provide a barrier film having the extremely high barrier property and also a better transparency, a method for manufacturing the same, and a laminated material, a container for wrapping and an image displaying medium using the barrier film.

Problems solved by technology

However, in these barrier films, there is a problem that the barrier property to oxygen and water vapor is not sufficient, and the barrier property is remarkably reduced, in particular, at sterilization treatment at a high temperature.
Further, a barrier film with a coating layer of polyvinilidene chloride provided thereon generates harmful dioxin at burning, and adverse effect on the environment is concerned.
However, the barrier property of these barrier films is still lower as compared with a laminated material for wrapping using an aluminium foil, and there is a problem in serviceability in use in an electronic device requiring the particularly high barrier property (e.g. an oxygen transmission rate is 0.1 cc / m2 / day-atm or smaller, a water vapor transmission rate is 0.1 g / m2 / day or smaller).

Method used

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  • Barrier film and laminated material, container for wrapping and image display medium using the same, and manufacturing method for barrier film
  • Barrier film and laminated material, container for wrapping and image display medium using the same, and manufacturing method for barrier film
  • Barrier film and laminated material, container for wrapping and image display medium using the same, and manufacturing method for barrier film

Examples

Experimental program
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example 1

(Preparation of Barrier Film)

[0109] As a substrate film, a wound up-like biaxially oriented polyethylene terephthalate film (PET film A4100 manufactured by Toyobo Co., Ltd., thickness 100 μm) having a width of 30 cm was prepared, and was mounted in a chamber 102 of a winding up type hollow cathode type ion plating apparatus 101 equipped with a pressure gradient-type plasma gun shown in FIG. 11 so that a corona-untreated surface side of this substrate film was a surface on which a film is to be formed. This ion plating apparatus 101 is provided with a vacuum chamber 102, a supplying roll 103a for supplying a substrate film, a winding up roll 103b and a coating drum 104 for which are arranged in this vacuum chamber 102, a vacuum evacuating pump 105 connected to the vacuum chamber 102 via a valve, a diaphragm 109, a filmmaking chamber 106 which is isolated from a vacuum chamber 102 with the diaphragm 109, a crucible 107 arranged at a lower part of this filmmaking chamber 106, an anod...

example 2

(Preparation of Barrier Film)

[0125] As a substrate film, a wound up-like biaxially oriented polyethylene terephthalate film (PET film A4100 manufactured by Toyobo Co., Ltd., thickness 100 μm) having a width of 30 cm was prepared, and was mounted in a chamber 102 of a winding up type hollow cathode type ion plating apparatus 101 equipped with a pressure gradient-type plasma gun shown in FIG. 11 so that a corona-untreated surface side of this substrate film was a surface on which a film is to be formed. This ion plating apparatus 101 is provided with a vacuum chamber 102, a supplying roll 103a for supplying a substrate film, a winding up roll 103b and a coating drum 104 for which are arranged in this vacuum chamber 102, a vacuum evacuating pump 105 connected to the vacuum chamber 102 via a valve, a diaphragm 109, a film making chamber 106 which is isolated from a vacuum chamber 102 with the diaphragm 109, a crucible 107 arranged at a lower part of this filmmaking chamber 106, an ano...

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Abstract

An object of the present invention is to provide a barrier film having the extremely high barrier property and the better transparency, a method for manufacturing the same, and a laminated material, a container for wrapping and an image displaying medium using the barrier film. According to the present invention, there is provided a barrier film provided with a barrier layer on at least one surface of a substrate film, wherein the barrier layer is a silicon oxide film having an atomic ratio in a range of Si:O:C=1100:160 to 190:30 to 50, a peak position of infrared-ray absorption due to Si—O—Si stretching vibration between 1030 to 1060 cm−1, a film density in a range of 2.5 to 2.7 g / cm3, and a distance between grains of 30 nm or shorter. Still more, there is provided a barrier film provided with a barrier layer on at least one surface of a substrate film, wherein the barrier layer is a silicon oxi-nitride film having an atomic ratio in a range of Si:O:N:C=100:80 to 110:40 to 70:30 to 50, a maximum peak of infrared-ray absorption due to Si—O stretching vibration and Si—N stretching vibration in a range of 900 to 1000 cm−1, a film density in a range of 2.7 to 3.0 g / cm3, and a distance between grains of 30 nm or shorter.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a barrier film having the extremely high barrier property which is used as a wrapping material for foods, medical products and the like, a packaging material for electronic devices and the like, or a substrate material, a method for manufacturing the same, and a laminated material, a container for wrapping and an image displaying medium using this barrier film. [0003] 2. Description of the Related Art [0004] Conventionally, as a wrapping material having the barrier property to an oxygen gas and water vapor, and the better storage suitability for foods, medical products and the like, various materials have been developed and proposed, such as a barrier film having a composition in which a coating layer of polyvinilidene chloride or an ethylene vinyl alcohol copolymer is provided on a flexible plastic substrate. [0005] However, in these barrier films, there is a problem that the barrie...

Claims

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Application Information

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IPC IPC(8): B32B9/04B32B13/12B32B19/00B32B27/08C23C14/10
CPCC23C14/10B32B27/08Y10T428/31663Y10T428/31667
Inventor KOMADA, MINORU
Owner DAI NIPPON PRINTING CO LTD