Removable Polymeric Liner for Ovenable Tray Separation
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Solution Overview
Problem
Formed base trays with polymeric liners face challenges in ovenable applications due to difficulty in separating the high temperature resistant polymeric liners from the formed base without premature adhesion or excessive manual force, which complicates disposal and recycling.
Innovation Solution
A polymeric based liner with an exterior and interior surface layer, where the formed base is removably affixed to the interior surface layer across at least 90% of the surface area, allowing for manual separation with a first portion remaining affixed and a second portion separating, maintaining structural integrity and recyclability, and withstanding oven temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If high temperature resistant polymeric liners are used for ovenable applications, then the liner can withstand oven temperatures, but the liner becomes difficult to separate from the formed base manually
Solution Approach 1:
The interior surface layer is divided into a first portion that remains affixed to the formed base and a second portion that separates from the first portion, enabling manual separation while maintaining temperature resistance
Solution Approach 2:
Different portions of the interior surface layer have different adhesion characteristics - the first portion maintains strong adhesion for temperature resistance during use, while the second portion is designed to separate manually for disposal
2Strength
If additional adhesive component is added between formed base and high temperature resistant liner, then the liner adheres strongly to the formed base, but the separation process becomes more difficult
Solution Approach 1:
The adhesive interface is segmented into two distinct zones within the interior surface layer, allowing different adhesion strengths in different locations without requiring additional adhesive components
Solution Approach 2:
The patent eliminates the need for additional adhesive components by incorporating adhesion functionality directly into the interior surface layer structure itself
3Adaptability or versatility
If premade polymeric liner is adhered to formed base, then functionality is enhanced, but manual separation results in too much material remaining adhered
Solution Approach 1:
The interior surface layer is segmented into separable portions that allow clean manual separation with minimal material remaining adhered, improving disposal efficiency
Solution Approach 2:
The design enables efficient separation and disposal of the liner from the formed base, facilitating environmentally friendly disposal and potential recycling of components
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
Enables easy manual separation of the polymeric liner from the formed base after use, maintaining structural integrity and recyclability, while ensuring sufficient adhesion during use and oven exposure, facilitating environmentally friendly disposal and recycling.
Implementation Method 1
the formed base is removably affixed to the interior surface layer of the polymeric based liner
Implementation Method 2
the polymeric based liner can survive oven temperatures and conditions without separating prematurely from the formed base nor adhering too much
Data Source
AI summary
A tray composite comprises a polymeric based liner including an exterior surface layer, an interior surface layer, and a formed base removably affixed to the interior surface layer of the polymeric based liner. A formed base is removably affixed to the interior surface layer of the polymeric based liner. The polymeric based liner and the formed base are manually separable after they have been removably affixed together by a first portion of the interior surface layer remaining affixed to the formed base and a second portion of the interior surface layer separating from the first portion of the interior surface layer.