Wax Strip Adhesive Positioning for Grip Control
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Solution Overview
Problem
Conventional wax strips for depilation are difficult to use due to improper placement and grasping issues, leading to non-targeted hair capture and residual wax, as users often cut the edges to improve grip, causing wax to be pushed out and capturing unwanted hairs.
Innovation Solution
A wax strip design with a depilatory adhesive composition positioned not closer than one-third to one-half of the backing substrate's length or width from one end, creating a grip portion for controlled removal and minimizing non-targeted hair capture, using a flat, pliable substrate with a suitable adhesive composition and optional release layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the depilatory adhesive composition is positioned closer to the edge of the backing substrate for easier application, then the ease of operation is improved, but non-targeted hairs are captured and residual wax remains on the skin
Solution Approach 1:
The patent applies local quality by positioning the depilatory adhesive composition in a specific location on the backing substrate - not closer than one-third of the distance from one end to the other end. This localized placement ensures that the adhesive only covers the necessary area for effective hair removal while leaving sufficient margin to prevent wax from being pushed out and capturing non-targeted hairs.
2Ease of operation
If users cut the edges of the backing substrate to improve grip, then the ease of operation is improved, but wax is pushed out from the side resulting in unwanted residual wax
Solution Approach 1:
The patent applies preliminary action by pre-positioning the depilatory adhesive composition away from the edges of the backing substrate during manufacturing. This preliminary placement creates a built-in margin that prevents wax from being pushed out during application and removal, eliminating the need for users to cut the edges and preventing residual wax without compromising grip control.
3Productivity
If the depilatory adhesive composition covers a larger area of the backing substrate for better hair capture, then the effectiveness of hair removal is improved, but non-targeted hairs are captured
Solution Approach 1:
The patent resolves this contradiction by applying local quality through strategic positioning of the adhesive composition. By placing the adhesive not closer than one-third of the distance from one end to the other end of the backing substrate, the design optimizes the coverage area to capture targeted hairs effectively while maintaining sufficient edge margin to prevent non-targeted hair capture and wax overflow.
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
Facilitates targeted hair removal with improved control and reduced residual wax, allowing for more precise application and effective hair removal without capturing non-targeted hairs.
Implementation Method 1
an adhesive composition, often having a wax component, that is applied to the skin, thereby adhering to the hair on the skin
Data Source
AI summary
A wax strip including a substantially flat, pliable backing substrate having a dimension from a first end to a second end, and a depilatory adhesive composition affixed to a portion of a first side of the backing substrate, where the depilatory adhesive composition is positioned not closer than about one-third of a distance from the first end to the second end of the dimension.