Frangible Laminates for Patterned Microwave Materials
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Solution Overview
Problem
Existing microwave packaging materials often rely on caustic chemicals for patterning conductive metals, which can impede electrical connector attachment and pose environmental concerns, and there is a need for alternatives that do not depend on these chemicals.
Innovation Solution
A method of forming frangible laminates with patterned microwave energy interactive material, where a sacrificial web is separated from a substrate web, allowing retained interactive sections to be spaced apart and bonded with adhesive protrusions and recesses, enabling the creation of compound laminates without caustic chemicals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If caustic chemicals are used for patterning conductive metals, then the microwave energy interactive material can be configured in predetermined shapes, but the conductive metal surface becomes impeded for electrical connector attachment
Solution Approach 1:
The patent divides the continuous conductive metal layer into discrete isolated sections that are spaced apart from one another. This segmentation allows electrical connectors to be attached to the metal sections without interference from adjacent metal areas, resolving the attachment impediment caused by continuous metal surfaces while maintaining the predetermined shape configuration for microwave energy interaction.
Solution Approach 2:
The patent applies different properties to different regions: the conductive metal sections maintain their conductivity and shape-defined properties for microwave interaction, while the spaces between sections provide non-conductive areas for connector attachment. This local differentiation allows simultaneous optimization of both microwave performance and electrical connection capability.
2Shape
If caustic chemicals are used for patterning, then the conductive metal can be deactivated in specific areas, but environmental concerns arise from chemical usage
Solution Approach 1:
The patent extracts and eliminates the caustic chemical processing step from the manufacturing process. Instead of using chemicals to deactivate metal in specific areas, the invention uses mechanical or physical methods to create isolated metal sections, thereby achieving the desired patterned configuration without introducing harmful chemical substances into the environment.
Solution Approach 2:
The patent employs a sacrificial web that is disposed of after serving its purpose during the lamination process. This sacrificial material enables the creation of isolated conductive sections without requiring permanent chemical treatments, allowing for environmentally friendly, disposable manufacturing approaches that avoid persistent chemical contamination.
3Use of energy by moving object
If continuous conductive metal is used, then microwave energy interaction is maximized, but electrical connector attachment is impeded
Solution Approach 1:
The continuous conductive metal is divided into isolated sections that maintain sufficient surface area for effective microwave energy interaction while creating spaces between sections that allow electrical connectors to be attached without interference from adjacent conductive areas.
Solution Approach 2:
The patent resolves the conflict by transitioning from a two-dimensional continuous metal surface to a distributed pattern of discrete metal sections across the surface, effectively utilizing spatial arrangement in multiple dimensions to simultaneously achieve energy interaction and connector accessibility.
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
This method allows for the production of laminates with patterned microwave energy interactive material that can be used in packaging and electronic components without the use of caustic chemicals, improving attachment efficiency and reducing environmental impact.
Implementation Method 1
adhesively bonding a first plurality of sections of the second web to the first web, and adhesively bonding a second plurality of sections of the second web to the third web
Implementation Method 2
Release material may be applied in order to inhibit at least some of any bonding between the first plurality of sections of the second web and the third web
Implementation Method 3
The separating of the frangible laminate into the first and second laminates may be comprised of tearing the first and second plurality of sections of the second web apart from one another
Implementation Method 4
Microwave energy interactive material generally provides, for example, enhanced surface heating, microwave shielding, enhanced microwave transmission, and/or energy distribution functions in packaging
Data Source
AI summary
A frangible laminate includes first, second and third webs, and the second web is positioned between the first and third webs. The forming of the frangible laminate includes adhesively bonding a first plurality of sections of the second web to the first web, applying release material in order to inhibit at least some of any bonding between the first plurality of sections of the second web and the third web, and adhesively bonding a second plurality of sections of the second web to the third web. The frangible laminate is separated into a first laminate and a second laminate, so that the first laminate includes the first web and the first plurality of sections of the second web, and the second laminate includes the third web and the second plurality of sections of the second web.