Natural Fiber Absorbent Packages With Reinforced Easy-Open Regions
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Solution Overview
Problem
Packages made from renewable resources such as natural fibers tend to crease, crack, or tear under packaging processes and opening strain, compromising their integrity and shape retention.
Innovation Solution
A package material comprising natural fibers with a weakened region of perforations that forms an opening, having a Basis Weight between 50 gsm and 120 gsm, and a Weakened Region Performance Factor of 0.14:1 to 0.98:1, designed to withstand packaging processes and maintain shape post-opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If packages are made from natural fibers (renewable resources), then environmental sustainability is improved, but structural strength and resistance to creasing/cracking/tearing deteriorates
Solution Approach 1:
The package material is constructed as a composite structure with a base layer of natural fiber material and a reinforcing layer of plastic polymer film. This composite construction combines the environmental benefits of natural fibers with the structural strength and durability of plastic, resolving the contradiction between sustainability and structural integrity.
Solution Approach 2:
The patent specifies that the natural fiber material should have a basis weight of at least 50 gsm, and the plastic polymer film should have a thickness of at least 0.5 mil. By optimizing these physical parameters, the package achieves sufficient strength to resist creasing, cracking, and tearing while maintaining its renewable resource content.
2Ease of operation
If opening features are added to natural fiber packages, then ease of opening is improved, but structural integrity and shape retention deteriorates
Solution Approach 1:
The plastic polymer film is applied selectively to specific regions of the natural fiber material, particularly around the opening feature and high-stress areas. This localized reinforcement provides easy opening at the designated feature while maintaining structural integrity and shape retention in the rest of the package.
Solution Approach 2:
The package structure is divided into regions with different properties: the natural fiber base material provides overall structure, while the plastic polymer film provides localized reinforcement at critical areas such as the opening feature, seals, and high-stress zones. This segmentation allows each region to perform its specific function optimally.
Data Source
AI summary
A package of one or more absorbent articles is disclosed. The package includes a package material enclosing the one or more absorbent articles. The package material has natural fibers and forms a front panel, a back panel opposite the front panel, a first side panel, a second side panel opposite the first side panel, a top panel, and a bottom panel opposite the top panel. The panels define an interior compartment. The package material has a Basis Weight of between about 55 gsm and about 115 gsm, according to the Basis Weight Test Method. The package has a weakened region. The package is sealed such that the one or more absorbent articles are enclosed in the interior compartment.