Separable Resin Laminate for Cleanroom Packaging and Recycling
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Solution Overview
Problem
Existing packaging solutions for clean environments, such as those used for semiconductor products, face inefficiencies in packaging processes due to multiple deaeration steps and are prone to interlayer lifting, while also lacking recyclability and contributing to environmental pollution.
Innovation Solution
A laminate comprising a separable first resin layer and a second resin layer, where the separation strength is 1.0 N/15 mm width or less, with the second resin layer being a polyethylene layer of density 0.909 g/cm3 or less or a polyolefin-based sealant layer, and optionally incorporating biomass-derived resin materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a laminate with separable surface film is used to enable easy opening in clean room, then ease of operation is improved, but interlayer lifting occurs which deteriorates appearance and reliability
Solution Approach 1:
The patent applies parameter changes by precisely controlling the separation strength between resin layers within the range of 0.5-2.0 N/15mm width, and by controlling the density of polyethylene layer within 0.90-0.96 g/cm³. These parameter optimizations allow the laminate to maintain strong bonding during packaging while enabling easy separation in clean rooms, preventing interlayer lifting and maintaining appearance quality.
2Reliability
If multiple deaeration and packaging steps are performed to ensure cleanliness, then reliability is improved, but productivity deteriorates due to reduced work efficiency
Solution Approach 1:
The patent merges multiple packaging functions into a single laminate structure with separable layers. The laminate can be sealed as a complete unit maintaining cleanliness, then easily separated when needed, eliminating the need for multiple separate deaeration and packaging operations while ensuring both cleanliness and productivity.
3Reliability
If conventional packaging materials are used to ensure functionality, then reliability is maintained, but recyclability deteriorates and environmental load increases
Solution Approach 1:
The patent enables discarding and recovering by designing a separable laminate structure where the outer protective layer can be easily separated from the inner packaging layer. This allows the inner layer to be recovered and reused, while the outer layer can be discarded or recycled separately, significantly improving recyclability and reducing environmental load while maintaining packaging functionality.
Data Source
AI summary
A laminate including at least a first resin layer and a second resin layer, wherein the first resin layer is provided so as to be separable from the second resin layer, and the separation strength between the first resin layer and the second resin layer is 1.0 N/15 mm width or less and satisfies the following requirements (1) and/or (2): (1) the second resin layer is a sealant layer including at least a polyethylene layer with a density of 0.909 g/cm3 or less, and the polyethylene layer in the second resin layer is in contact with the first resin layer, and/or (2) the second resin layer is a sealant layer containing a polyolefin as a main component and has a polyolefin content of 82% by mass or more based on a mass of the second resin layer.