Double-Sided Adhesive Dosage Form with Integrated Leaflet
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Solution Overview
Problem
Current double-sided adhesive products face issues with users not adequately following application instructions, leading to improper use and potential damage, and they require complex and costly protective measures against UV radiation.
Innovation Solution
A dosage form featuring a non-stick coated backing sheet with a 4n-page leaflet, where the adhesive is pressure-sensitive on both major faces and covered by a protective film, allowing easy access to instructions only when fully unfolded, and providing built-in UV protection through the leaflet and carrier sheet design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If adhesive products are provided with separate outer packaging containing instructions for use, then product information can be provided, but users do not adequately appreciate or register the instructions and the packaging is thrown away while adhesives are stored separately
Solution Approach 1:
The patent combines the application instructions and the adhesive product into a single integrated dosage form. The instructions are printed directly on the backing sheet of the adhesive assembly, which remains permanently attached to the product. This ensures users cannot separate the instructions from the adhesive, eliminating the problem of discarded packaging and lost information.
Solution Approach 2:
The backing sheet serves as an intermediary carrier that integrates both the adhesive assembly and the application instructions. By printing instructions directly on this essential component that users must handle during application, the patent ensures the instructions are always present and visible when needed.
2Stability of the object's composition
If adhesive assemblies are permanently bonded to the backing sheet, then the backing sheet can serve as a permanent carrier, but the adhesive assemblies cannot be easily removed for proper disposal or replacement
Solution Approach 1:
The patent applies different bonding characteristics to different regions of the adhesive assembly. The release liner is bonded to the backing sheet with a permanent bond strength in the range of 0.5-5.0 N/15 mm, while the adhesive itself has controlled adhesion properties. This local differentiation allows the backing sheet to serve as a permanent carrier structure while enabling controlled removal of the adhesive assembly when needed.
3Object-affected harmful factors
If protective measures against UV radiation are implemented using special packaging materials or stabilizers, then adhesive protection is improved, but the complexity and cost of the product increases
Solution Approach 1:
The backing sheet serves multiple functions simultaneously: it acts as the permanent carrier for the adhesive assembly, provides the application instructions through printed text, and serves as the UV protective barrier. By integrating these functions into a single component, the patent eliminates the need for separate protective packaging materials or additional stabilizer formulations, reducing overall product complexity.
4Illumination intensity
If the backing sheet is made transparent to visible light, then the adhesive assembly is visible for quality control, but UV radiation can penetrate and degrade the adhesive
Solution Approach 1:
The patent specifies that the backing sheet should be opaque or translucent to visible light, preventing UV radiation penetration while maintaining the ability to visually inspect the adhesive assembly through the backing sheet. This parameter change in the optical properties of the backing sheet material resolves the contradiction between visibility and UV protection.
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
Enhances user adherence to instructions, facilitates easy removal of adhesives while ensuring effective protection against UV radiation in a cost-effective manner, preventing accidental detachment and damage.
Implementation Method 1
the adhesive arrangement is one face and on both of its major faces pressure-sensitive adhesive
Implementation Method 2
a protective film that covers the first main surface as completely as possible
Implementation Method 3
the backside of the backing sheet opposite the coated front side is permanently bonded to a front face area of the unfolded leaflet by a bonding agent
Data Source
Figure 1
Figure 2a)~2d)
Figure 3~4
AI summary
The invention relates to a dosage form (1, 101) for removing at least one adhesive assembly (3) with a double-sided adhesive effect, comprising the following: (a) at least one carrier sheet (20) with an anti-adhesion coated front face (2), (b) at least one adhesive assembly (3) which is arranged on the carrier sheet (20), and (c) a 4n-sided folding sheet (10, 110), the front and rear surface of which are each divided into 2n sides by n folding lines in the unfolded form, wherein n is a natural number ≥ 1, the carrier sheet (20) rear face lying opposite the coated front face (21) is permanently connected to a front face-side surface region of the unfolded folding sheet (10, 110) by means of a connection means (22), and the projection of each carrier sheet (20) lies within a side of the 4n-sided folding sheet (10, 110). The adhesive assembly (3) comprises a flat adhesive (30) adhering to both of the main surfaces of the adhesive assembly and a protective film (31) which completely covers the first main surface of the assembly as much as possible, and the adhesive assembly (3) adheres onto the coated front face (21) of the carrier sheet (20) in a removable manner via the second main surface of the adhesive (30). The dosage form (1, 101) is characterized in that a first folding line (15, 111) of the n folding lines divides the unfolded folding sheet (10, 110) into two semi-surfaces as a halving fold on the front face and is formed as a continuous valley fold with respect to the unfolded front face of the folding sheet (10, 110). The additional folding lines (n-1) intersect the first folding line (15, 111) at a right angle, and the additional folding lines (n-1) are designed in some regions as valley folds and in some regions as mountain folds. Each folding direction of the additional folding lines (n-1) changes at the intersection.