Stickpack Test Strip Packaging for Heat and Moisture Protection
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Solution Overview
Problem
Existing packaging for disposable test strips, such as those used in blood glucose testing, fails to adequately protect the chemistry pads from environmental factors like heat and moisture, especially during sealing, which can impair test accuracy and require users to carry unnecessary large volumes.
Innovation Solution
A stickpack-type packaging with an elongate foil tube featuring transverse sealing joints and a single disposable test strip positioned away from these joints, using a composite-layer flat web with desiccants and reference color imprints for accurate test evaluation, ensuring minimal thermal and moisture impact on the chemistry pad.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If test strips are packaged in large quantities in vials or containers, then users can have multiple tests available, but the packaging volume becomes unnecessarily large and less convenient to carry
Solution Approach 1:
The patent divides the traditional large container holding multiple test strips into individual stickpack units, each containing a single test strip. This segmentation allows users to carry only the required number of compact stickpacks rather than a large volume container, directly resolving the contradiction between quantity availability and portability.
2Device complexity
If the chemistry pad is positioned close to the transverse sealing joint for compact packaging, then the packaging structure is simplified, but the reactive components in the chemistry pad are impaired by heat influence during sealing
Solution Approach 1:
The patent applies local quality by creating a heat-resistant zone or barrier between the transverse sealing joint and the chemistry pad. This localized protection ensures that the chemistry pad's reactive components are shielded from heat influence during the sealing process, maintaining test accuracy while allowing the packaging structure to remain relatively simple.
3Volume of moving object
If the foil tube provides complete sealing for compact packaging, then portability is improved, but the chemistry pad remains vulnerable to environmental influences like moisture and dust
Solution Approach 1:
The patent creates an inert or protected atmosphere inside the foil tube by positioning the chemistry pad away from the sealing joints and potentially using desiccants or barrier layers. This establishes a protective environment that prevents moisture and dust from reaching the chemistry pad, maintaining both compact packaging and protection against harmful environmental factors.
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
Provides enhanced protection against environmental influences, ensuring accurate test results and user convenience by minimizing thermal and moisture exposure, allowing single-use packaging that is compact and efficient.
Implementation Method 1
The foil tube may further comprise a desiccant for drying the fill space
Implementation Method 2
sealing the foil tube by first and second heat-sealed transverse joints
Data Source
AI summary
The application concerns a stickpack-type packaging comprising an elongate foil tube having two transverse sealing joints, such that a tightly closed fill space is provided in the foil tube for storing a product. It is proposed that a single disposable test strip is arranged in the fill space, wherein the test strip has a chemistry pad for detecting an analyte in a sample, and the chemistry pad is arranged at a distance at least from one of the transverse sealing joints.