Frangible Layer Sampler Device for Fragrance Containment
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Solution Overview
Problem
Existing sampler devices for perfumes and cosmetics are limited by permeability issues with paper substrates, leading to premature release and contamination, and are constrained by material selection due to pH sensitivity and cohesion strength challenges, which affect the integrity and appearance of the sample and printed carrier.
Innovation Solution
A device comprising a first and second structural layer with a frangible layer that separates to access the sample material, using a pressure-sensitive adhesive and materials with higher Z-direction strength than the frangible layer, allowing for easy opening without damaging the packaging and enabling the use of various substrates and graphics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If paper substrate is used for sampler device, then ease of manufacture and printing are improved, but permeability causes premature release and contamination of sample material
Solution Approach 1:
The sampler device is segmented into multiple functional layers: a substrate layer for printing and manufacturing, a barrier layer to prevent permeation, and a sample containment layer. This segmentation allows each layer to perform its specific function optimally while resolving the contradiction between ease of manufacture and reliability.
Solution Approach 2:
A barrier layer is introduced as an intermediary between the paper substrate and the sample material. This intermediate layer prevents direct contact and permeation while allowing the paper substrate to maintain its manufacturing advantages. The barrier layer acts as a mediator that resolves the contradiction by blocking harmful permeation without compromising the ease of manufacture of the overall device.
2Ease of operation
If microcapsules are used to deliver fragrance, then sample delivery function is improved, but sensitivity to substrate chemistry and pH causes discoloration and failure
Solution Approach 1:
The barrier layer serves as a protective intermediary between the microcapsules and the substrate chemistry. It isolates the microcapsules from harmful chemical interactions with the paper and printing inks, preventing discoloration and degradation while maintaining the microcapsule delivery function.
Solution Approach 2:
The sampler device uses composite material construction with a barrier layer specifically selected to be chemically inert and compatible with both the substrate and sample material. This composite structure protects the sensitive microcapsules from substrate chemistry while maintaining ease of operation.
3Strength
If adhesive bond strength is increased to prevent paper failure, then structural integrity is improved, but tensile strength causes damage to printed carrier and sampler
Solution Approach 1:
The opening mechanism is segmented into controlled failure zones designed to break at specific locations away from the printed carrier. This segmentation allows the adhesive bonds to maintain structural integrity while directing any necessary failure to sacrificial areas that protect the printed materials.
Solution Approach 2:
The frangible layer is designed with preliminary weakness at specific locations to prevent uncontrolled failure. By pre-positioning the failure point in a controlled location, the design prevents harmful effects to the printed carrier while maintaining overall structural integrity through the adhesive bonds.
4Ease of operation
If frangible layer is positioned at edge for easy opening, then ease of operation is improved, but adhesive setback creates manufacturing precision challenges
Solution Approach 1:
The adhesive layer is designed with multi-functionality: it provides both structural bonding and defines the frangible edge position. By making the adhesive placement universal for both functions, the design reduces manufacturing precision challenges while maintaining ease of operation.
Solution Approach 2:
The adhesive is applied with specific local quality characteristics - full strength at critical bonding areas and controlled setback at the frangible edge. This localized variation in adhesive properties allows easy opening while managing manufacturing precision requirements through targeted adhesive placement.
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 effectively isolates the sample from the substrate, prevents premature release, and allows for unobstructed print continuity, enabling the use of a wide range of materials and easy production in mass quantities while maintaining the integrity of the package.
Implementation Method 1
upon application of tensile or peel force stress between the first structural layer and the second structural layer, the frangible layer breaks for access to the sample material
Implementation Method 2
the outer surfaces of the first structural layer and the second structural layer comprise an adhesive. Preferably, the adhesive on the outer surface of at least one of the first structural layer and the second structural layer is a pressure sensitive adhesive
Data Source
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AI summary
A device for containing and releasing a sample material having a first structural layer, a second structural layer, and a frangible layer containing a sample material attaching the first structural layer to the second structural layer. The sample material may be a fragrance. The device may further include a substrate such as a printed carrier sheet having a first panel and a second panel. The sampler may be placed on the second panel and the first panel is folded over the sampler to form the device. When the substrate is unfolded, the frangible layer separates for access to the sample material.