Twist-Free Cling Wrap Sheets With Concealed Hooks
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Solution Overview
Problem
Existing food storage solutions, such as snack bags, lidded containers, and aluminum foil, fail to effectively cover and preserve food in bowls or casserole dishes due to issues like self-twisting cling wrap, missing lids, and difficulty in finding matching container sizes, leading to waste and inefficiency.
Innovation Solution
A twist-free sheet of cling wrap with a 1-ply body, 3-ply flaps, and 2-ply thumb tabs, where the center ply is cling-free, allowing sheets to interlock and be easily dispensed from a box, preventing self-twisting and facilitating clean application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If plastic food wrap is made clingy to seal tightly on dishes, then sealing effectiveness is improved, but the wrap clings to itself creating waste and making dispensing difficult
Solution Approach 1:
The wrap is divided into multiple individual pre-cut sheets within a single roll, with each sheet separated by a tear line. This segmentation allows users to dispense one sheet at a time without the wrap clinging to itself, while each sheet maintains full clinginess for effective sealing on dishes.
Solution Approach 2:
A release liner or coating is introduced between adjacent sheets of cling wrap to prevent them from sticking to each other. This intermediary layer allows the wrap to be stored in a roll format and dispensed easily, while the release liner is removed or torn away before application to the dish, leaving the cling wrap free to adhere tightly to the food container.
2Area of stationary object
If a roll of cling wrap is stored in a drawer, then storage space efficiency is improved, but it becomes impossible to find the leading edge to pull off
Solution Approach 1:
The leading edge of each sheet is pre-positioned at a accessible location within the packaging, such as the top edge of the roll or a designated dispensing end. This preliminary positioning ensures that users can easily identify and access the starting point for dispensing without having to search through the entire roll, while the roll format maintains space-efficient storage.
3Loss of substance
If cling wrap sheets are cut to exact sizes, then waste reduction is improved, but the wrapping process becomes more complex and time-consuming
Solution Approach 1:
The wrap sheets are manufactured with standardized, optimized dimensions that balance waste reduction with ease of use. Rather than custom-cutting each sheet to exact specifications, the sheets are produced with slight variations in size that accommodate most common food containers, reducing the need for precise measurement and complex cutting processes while minimizing waste through near-optimal coverage.
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, twist-free dispensing and application of cling wrap sheets, reducing waste and improving food preservation by providing a reliable, airtight seal without the need for additional containers or lids.
Implementation Method 1
The center ply is cling-free, allowing sheets to interlock and be easily dispensed from a box
Implementation Method 2
it clings tightly to glass, glazed ceramic and metal serving dishes of all sizes and shapes
Data Source
AI summary
We disclose a sheet of twist-free cling wrap, comprising opposing multi-ply flaps and opposing thumb tabs. The flaps have concealed integral hooks which connect sheets to one another in a series. Rigid extensions to the sheet lodge beneath a dispensing slit to dispense one sheet at a time.