Paper Bag Sealing Structure for Absorbent Article Packaging
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Solution Overview
Problem
Existing disposable personal hygiene absorbent articles are typically packaged in plastic materials that are not environmentally sustainable and pose issues with degradability and recyclability, leading to littering and toxic gas production during combustion.
Innovation Solution
A package comprising a bag made of paper material with a specific adhesion layer on the inner surface, allowing for secure sealing without excess adhesive, and designed for easy opening, which can hold one or more stacks of absorbent articles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If plastic materials are used for packaging, then low weight, high flexibility and easy sealing are achieved, but low degradability, recyclability issues, littering and toxic gas production during combustion occur
Solution Approach 1:
The patent changes the material parameter from plastic to paper, fundamentally altering the environmental properties while maintaining packaging functionality. The paper material achieves degradability and recyclability while the adhesion layer parameters (basis weight 28-45 g/m², thickness 15-30 µm) are optimized to ensure sealing performance comparable to plastic.
Solution Approach 2:
The packaging uses a composite structure combining paper material with an adhesion layer. The paper provides sustainability and degradability, while the adhesion layer (with specific properties: basis weight 28-45 g/m², thickness 15-30 µm) ensures sealing capability. This composite approach resolves the contradiction between environmental friendliness and sealing ease.
2Reliability
If adhesion layer is applied over the entire inner surface, then good sealing is achieved, but corners may be unintentionally adhered during manufacture
Solution Approach 1:
The adhesion layer is applied selectively rather than uniformly across the entire inner surface. By concentrating the adhesive in specific regions, the patent achieves reliable sealing at critical joints while avoiding excessive adhesion in corner areas that would cause manufacturing problems. This local application strategy resolves the contradiction between sealing quality and ease of manufacture.
3Object-affected harmful factors
If paper material is used instead of plastic, then sustainability and degradability are improved, but sealing performance and adhesion may be reduced
Solution Approach 1:
The patent combines paper material with an adhesion layer to create a composite packaging structure. The paper provides environmental sustainability and degradability, while the adhesion layer (optimized with basis weight 28-45 g/m² and thickness 15-30 µm) ensures reliable sealing performance. This composite approach allows the package to achieve both environmental benefits and functional sealing requirements.
Solution Approach 2:
The patent optimizes specific parameters of the adhesion layer to compensate for the lower inherent adhesion of paper compared to plastic. By controlling the adhesion layer's basis weight (28-45 g/m²) and thickness (15-30 µm), the patent achieves sealing performance sufficient for packaging absorbent articles while maintaining the environmental advantages of paper material.
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 paper-based packaging provides a sustainable alternative to plastic, ensuring effective protection and easy access to the absorbent articles while reducing environmental impact.
Implementation Method 1
The bag comprises an adhesion layer provided on the inner surface portions of the peripheral wall, said adhesion layer being used for adhering said inner surface portions to one another
Implementation Method 2
During sealing, the hot-melt adhesive is melted again upon heating, as a result of which a sealing is formed upon cooling
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The disclosure relates to a package (1) comprising a bag (100) and at least one stack of absorbent articles arranged in the bag, the bag being made of a paper material, wherein the bag has a sealed bottom (101), a sealed top (102), and a peripheral wall (103) extending between the bottom and the top, wherein the top is formed by adhering inner surface portions of the peripheral wall to one another. The bag comprises an adhesion layer provided on the inner surface portions of the peripheral wall, said adhesion layer being used for adhering said inner surface portions to one another, wherein the adhesion layer has a basis weight of 28–45 g/m2.