Two-Shot Overmolded Living Hinge Pull Tab for Durable Identification
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Solution Overview
Problem
Product identification labels on complex machinery or large equipment are often difficult to access, and existing pull tabs may become damaged or fall out due to improper securing and frequent use.
Innovation Solution
A flexible living hinge identification pull tab is designed with a two-shot overmold process, combining sturdy materials with a flexible rubber-like material for durability and a mechanical interlock, allowing secure attachment and repeated bending for easy access to product identification information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pull tab is used to provide accessible product identification, then ease of operation is improved, but reliability deteriorates due to frequent pulling causing damage
Solution Approach 1:
The pull tab is divided into two distinct segments: a rigid portion for structural integrity and attachment, and a flexible portion for repeated bending operations. This segmentation allows each part to perform its specific function optimally without compromising the other.
Solution Approach 2:
The pull tab utilizes a composite structure combining rigid material (for the attachment portion) and flexible material (for the bending portion). This composite approach enables the tab to withstand both the mechanical stresses of attachment and the repetitive bending required for frequent access to identification information.
2Strength
If a rigid pull tab is used for durability, then strength is improved, but ease of operation deteriorates due to inability to bend for viewing
Solution Approach 1:
The pull tab is divided into two distinct segments: a rigid portion for structural integrity and attachment, and a flexible portion for repeated bending operations. This segmentation allows each part to perform its specific function optimally without compromising the other.
Solution Approach 2:
The pull tab utilizes a composite structure combining rigid material (for the attachment portion) and flexible material (for the bending portion). This composite approach enables the tab to withstand both the mechanical stresses of attachment and the repetitive bending required for frequent access to identification information.
3Ease of operation
If a pull tab is made flexible for repeated bending, then ease of operation is improved, but strength deteriorates causing the tab to break
Solution Approach 1:
The pull tab is divided into two distinct segments: a rigid portion for structural integrity and attachment, and a flexible portion for repeated bending operations. This segmentation allows each part to perform its specific function optimally without compromising the other.
Solution Approach 2:
The pull tab utilizes a composite structure combining rigid material (for the attachment portion) and flexible material (for the bending portion). This composite approach enables the tab to withstand both the mechanical stresses of attachment and the repetitive bending required for frequent access to identification information.
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 solution provides a durable and accessible means to view product identification information without damage, ensuring the pull tab remains securely attached and functional over time.
Implementation Method 1
The identification pull tab may be manufactured with a two-shot overmold process to ensure that the materials are held together with a chemical bond
Data Source
AI summary
Examples disclosed herein relate to a flexible living hinge for an identification pull tab. The flexible living hinge has a first shot area with a first portion of a first material and a second portion of a second material. The first portion has a first spring tail and a second sprint tail for attachment to a surface of a product and the second portion has a flat surface. A second shot area of a third flexible material is connected to the first portion and the second portion of the first shot area.