Natural-Material Packet Wrapper With Tear Strip and Hermetic Sealing
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Solution Overview
Problem
Existing pocket-sized wrappers for products like candies, sweets, pharmaceuticals, and smoking articles are predominantly made of plastic materials, contributing to environmental pollution, and there is a need for an ecological, recyclable, and easily producible alternative that maintains product visibility and ease of opening.
Innovation Solution
A wrapper made from natural materials, such as cellulose and textile fibers, with a thermo-activated adhesive strip and a tearing element, ensuring hermetic sealing and easy access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If plastic materials (polypropylene, polyethylene, PET) are used for wrappers, then good workability, low cost, and mechanical-chemical performance are achieved, but environmental pollution increases
Solution Approach 1:
The invention changes the material parameter from synthetic plastic to natural cellulose-based material, maintaining the required mechanical properties while eliminating environmental pollution. The cellulose wrapper achieves comparable workability and cost-effectiveness through automated production processes.
Solution Approach 2:
The invention uses composite structure combining cellulose base material with adhesive layers and tearing elements. This composite approach allows the natural material to achieve the functional performance previously only available from plastic materials, including sealability and controlled opening.
2Object-generated harmful factors
If natural materials are used for wrappers, then environmental friendliness and recyclability are improved, but manufacturing complexity and productivity may worsen
Solution Approach 1:
The invention applies adhesive layers and tearing elements to the cellulose wrapper in advance during the manufacturing process. This preliminary action ensures that when the wrapper is produced, it already possesses all necessary functional characteristics, enabling high-speed automated packaging without additional processing steps.
Solution Approach 2:
The invention optimizes the physical and chemical parameters of the cellulose material and adhesive components to enable compatibility with high-speed automated packaging machinery. Through parameter optimization, the natural material achieves production speeds suitable for industrial application.
3Reliability
If the wrapper is made opaque for protection, then product quality is preserved, but product visibility deteriorates
Solution Approach 1:
The invention applies different optical properties to different regions of the wrapper. The main wrapper body remains translucent to allow product visibility, while specific local areas may have enhanced protective properties. This local differentiation maintains both visibility and protection functions simultaneously.
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 wrapper is eco-friendly, recyclable, cost-effective, and allows easy opening while maintaining product visibility, addressing the environmental impact of plastic packaging.
Implementation Method 1
a tearing element (38) made with one or more natural materials and adhered to the sheet (20)
Implementation Method 2
the sheet (20) comprises an adhesive strip (39) impregnated with thermo-activated adhesive
Data Source
Figure 1~5
Figure 3~4
Figure 6~7
AI summary
A wrapper (20) to wrap a pocket-sized packet (10) comprises a sheet on which a tearing element is adhered, wherein the sheet and the tearing element are both made with one or more natural materials, and wherein the tearing element (38) is associated with the sheet to facilitate the removal of the wrapper (20) when the packet (10) is first opened. The flat sheet comprises an adhesive strip (39) impregnated with thermo-activated adhesive and on which the tearing element (38) is glued.