Wrapped Container Label with Dual Adhesive Strength
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Solution Overview
Problem
Existing wrapped containers, such as cigarette packs, face challenges in ensuring that tax stamps are completely removed and destroyed when the wrapper is opened, leaving space for decorative elements and failing to meet regulatory requirements for tax stamp destruction.
Innovation Solution
A wrapped container design featuring a label with a high tack connection to the wrapper and a low tack connection to the container, incorporating lines of weakness that rupture upon wrapper removal, ensuring the label is completely removed and destroyed, utilizing a combination of high tack and low tack adhesives and strategically placed adhesive spots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the label is affixed strongly to both the container and the wrapper, then the label remains securely attached during handling and transport, but the label cannot be completely removed from the container when the wrapper is opened
Solution Approach 1:
The patent applies different adhesive strengths at different locations of the label. The first adhesive layer (between label and wrapper) has high tackiness to ensure secure attachment during handling, while the second adhesive layer (between label and container) has low tackiness to allow complete label removal when the wrapper is opened. This local differentiation of adhesive properties resolves the contradiction between secure attachment and complete removal.
2Strength
If the label is affixed to the container with strong adhesive, then the label remains securely attached, but space on the container surface is occupied and decorative elements cannot be fully displayed
Solution Approach 1:
The patent enables the label to be completely removed from the container after the wrapper is opened. The low tackiness of the second adhesive layer ensures that the label detaches completely from the container during wrapper removal, freeing up the entire container surface area for decorative elements or product information without leaving residual adhesive or label material.
3Area of stationary object
If the label is designed to be easily removed from the container, then the container surface is freed for decorative elements, but the label may detach prematurely during handling and transport
Solution Approach 1:
The patent uses a dual adhesive layer system with different tackiness levels. The first adhesive layer (high tackiness) between the label and wrapper provides reliable attachment during handling and transport, while the second adhesive layer (low tackiness) between the label and container allows easy removal. This local differentiation ensures both reliability during use and ease of removal afterward.
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 allows for the complete removal and destruction of the tax stamp, freeing up space for decorative elements while ensuring compliance with tax stamp destruction requirements, and providing a simple and reliable packaging method for consumer articles.
Implementation Method 1
The label is affixed to the wrapper with a high tack connection
Implementation Method 2
The label is affixed to the container with a low tack connection
Data Source
Figure 1
AI summary
A wrapped container has a label (2) attached to the container (1) and to the wrapper. The label (2) comprises at least one line of weakness (3). It is affixed to the wrapper with a high tack connection and is less strongly affixed to the container (1) with a low tack connection such that upon removal of the wrapper the label (2) is at least partially ruptured along the at least one line of weakness (3) and is completely removed from the container (1).