Web Material Dispensing Container Pinch Straightening
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Solution Overview
Problem
Conventional containers fail to uncurl and straighten web materials, such as parchment paper, as they are dispensed from a roll, due to the material's memory and tendency to revert to a curled configuration.
Innovation Solution
A container design with a lid portion that pinches the web material between a front lid panel pressure edge and a bottom panel, applying a shear force to straighten the material during dispensing, combined with a base portion that retains the roll and includes features like retainer tabs and a cutter for easy handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If web material is stored in a roll for ease of commercialization and use, then storage convenience is improved, but the web material reverts to a curled configuration after dispensing due to material memory
Solution Approach 1:
The container applies a preliminary counteracting force to the material's memory effect by pinching the web material between the front lid panel pressure edge and the bottom panel during dispensing. This preliminary anti-action prevents the material from curling after dispensing by opposing the reverting force before the material can assume its curled configuration.
Solution Approach 2:
The container structure, particularly the front lid panel configured to extend within the compartment, performs a preliminary straightening action on the web material as it is dispensed. The pinching mechanism applies shear force in advance to counteract the material's tendency to curl, ensuring the material emerges flat rather than allowing it to curl after dispensing.
2Adaptability or versatility
If conventional containers are used to hold rolls of web material, then storage functionality is provided, but the containers are not configured to uncurl and straighten web material during dispensing
Solution Approach 1:
The container is designed with multi-functionality, serving both as a storage vessel for the web material roll and as a straightening device during dispensing. The front lid panel with its pressure edge and the bottom panel work together to perform the dual function of containing the roll and applying shear force to uncurl the material as it is dispensed.
Solution Approach 2:
The container is divided into functional segments: the base portion defining the compartment for roll storage, the lid portion with the front lid panel that extends into the compartment, and the pressure edge that applies force. This segmentation allows each part to perform its specific function while working together to achieve both storage and straightening capabilities.
3Manufacturing precision
If the lid portion extends within the compartment to pinch web material, then straightening effectiveness is improved, but the device complexity increases
Solution Approach 1:
The front lid panel is designed as a thin, flexible extension that can reach into the compartment without adding significant structural complexity. The panel's ability to flex and apply localized pressure at the pressure edge provides effective straightening while maintaining a simple overall container structure that is easy to manufacture.
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 container effectively reduces the curvature of dispensed web material by applying a shear force, allowing it to lie flat on a surface, enhancing usability and user experience.
Implementation Method 1
applying a shear force to straighten the material during dispensing
Data Source
AI summary
Container includes a base portion having a bottom panel defining a compartment. A front base panel extends upwardly from the bottom panel. A back panel extends from the bottom panel. First and second base side tabs extend between the bottom panel, front base panel, and back panel to define opposing sides. A lid portion is moveable between open and dispensing positions. The lid portion includes a top panel hindgedly-coupled to the back panel, and a front lid panel extending from the top panel having a front lid panel pressure edge. The front lid panel in the dispensing position extends within the compartment along the front base panel to pinch a web material from the compartment between the front lid panel pressure edge and the bottom panel. The web material is dispensed between the front lid panel and the front base panel when the lid is in the dispensing position.