Light-Shielding Barrier Laminate for Powder Packaging
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Solution Overview
Problem
Conventional packaging materials with three-layer structures are costly, bulky, and fail to provide adequate gas and light-shielding properties, particularly for powders, which require high water vapor barrier properties to maintain their integrity.
Innovation Solution
A two-layer light-shielding barrier laminate comprising a transparent gas barrier film with an inorganic oxide vapor deposition film and a heat-sealable resin film with an aluminum vapor deposition film, both formed using a vacuum vapor deposition method with a resistance heating system, providing excellent gas and light-shielding properties without the bulk and cost issues of multilayer structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a three-layer structure laminate is used to achieve gas barrier property and light-shielding property, then the packaging material provides adequate protection, but the production cost and transport cost increase due to large amounts of materials and thick bulk
Solution Approach 1:
The patent combines the gas barrier function and light-shielding function into a single integrated laminate structure. The aluminum vapor deposition film simultaneously provides both gas barrier properties and light-shielding properties, eliminating the need for separate functional layers and reducing overall material usage and production costs.
Solution Approach 2:
The patent uses a composite structure consisting of a transparent resin film with an inorganic oxide vapor deposition film and a heat-sealable resin film with an aluminum vapor deposition film. This composite material approach allows optimization of each layer's thickness and composition to achieve required performance while minimizing material usage.
2Reliability
If a three-layer structure laminate is used to achieve gas barrier property and light-shielding property, then the packaging material provides adequate protection, but the bulk increases leading to higher transport cost
Solution Approach 1:
The patent merges multiple protective functions into a single thin laminate structure. The aluminum vapor deposition film provides both light-shielding and gas barrier functions in one thin layer, significantly reducing the overall bulk compared to conventional multi-layer structures that require separate layers for each function.
Solution Approach 2:
The patent employs thin vapor deposition films (inorganic oxide and aluminum) deposited on flexible resin films. These thin films provide high-performance barrier and light-shielding properties without adding significant bulk, enabling lightweight and compact packaging structures.
3Illumination intensity
If aluminum foil is used in the laminate, then light-shielding property is achieved, but environment stability deteriorates
Solution Approach 1:
The patent creates a composite structure where aluminum vapor deposition film is laminated on a heat-sealable resin film with adhesive layers. This composite approach protects the aluminum from environmental degradation while maintaining its light-shielding properties, improving overall environment stability compared to using aluminum foil alone.
Solution Approach 2:
The patent introduces adhesive layers as intermediary components between the aluminum vapor deposition film and the heat-sealable resin film. These adhesive layers protect the aluminum from direct exposure to environmental factors that could cause deterioration, while still allowing the aluminum to perform its light-shielding function effectively.
4Reliability
If conventional packaging materials are used for powders, then packaging is provided, but water vapor barrier property is insufficient leading to moisture absorption and quality impairment
Solution Approach 1:
The patent uses a composite laminate structure with multiple barrier layers including inorganic oxide vapor deposition film and aluminum vapor deposition film. This composite structure provides superior water vapor barrier properties compared to conventional single-layer materials, effectively preventing moisture absorption by powdered contents.
Solution Approach 2:
The patent employs thin vapor deposition films that provide high water vapor barrier properties. The inorganic oxide and aluminum vapor deposition films create a dense, impermeable barrier that effectively blocks water vapor transmission, protecting powdered contents from moisture even in thin-film configurations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The laminate achieves a high water vapor barrier property, reduces production and transport costs, and prevents moisture absorption, maintaining the quality of powders by offering a thin, efficient packaging solution with improved gas and light-shielding capabilities.
Implementation Method 1
having an inorganic oxide vapor deposition film formed on one side of a transparent resin film
Implementation Method 2
formed by a vacuum vapor deposition method with a resistance heating system
Implementation Method 3
having an aluminum vapor deposition film formed on one side of a heat-sealable resin film
Implementation Method 4
formed by a vacuum vapor deposition method with a resistance heating system
Implementation Method 5
via an adhesive layer
Data Source
AI summary
To provide a light-shielding barrier laminate with excellent gas barrier properties and light-shielding properties. A light-shielding barrier laminate comprising a light-shielding sealant film laminated on a transparent gas barrier film, having an inorganic oxide vapor deposition film formed on one side of a transparent resin film, on the side on which the inorganic oxide vapor deposition film has been formed, via an adhesive layer, the light-shielding sealant film being a film having an aluminum vapor deposition film formed on one side of a heat-sealable resin film, the side on which the aluminum vapor deposition film is formed being laminated so as to face the adhesive layer.