Wet Tissue Package Lid Structure for Decorative Freedom
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Solution Overview
Problem
Existing packaging designs for sheet-type articles like wet tissues limit the freedom of decorative design due to the structural integration of reinforcing and lid sheets, which restricts aesthetic and functional enhancements.
Innovation Solution
A package comprising three sheets: a heat-sealable first sheet for the body, a rigid second sheet for the lid, and a third sheet with an opening, where the second sheet is bonded between the first and third sheets to enhance decorative freedom and structural integrity, allowing the first lid element to open and close the opening formed in the third sheet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the reinforcing sheet and lid sheet are bonded to the base sheet (either inner or outer side), then the structural integrity and opening-closing function are achieved, but the freedom of decorative design on the package surface is limited
Solution Approach 1:
The package structure is divided into three separate sheets (base sheet, intermediate sheet, lid sheet) that can be independently designed and manufactured. The intermediate sheet acts as a structural support layer that can be bonded to the base sheet, while the lid sheet remains separate for aesthetic purposes. This segmentation allows decorative designs on the lid sheet and base sheet to be optimized independently without compromising structural integrity.
Solution Approach 2:
An intermediate sheet is introduced as a mediator between the base sheet and lid sheet. This intermediate sheet provides the necessary structural support and bonding surface, while allowing the lid sheet to be positioned over the opening without being permanently bonded to the base sheet. The intermediate sheet thus enables both structural integrity and design freedom by decoupling the functional and aesthetic components.
2Ease of manufacture
If a single integrated sheet is used for the package body and lid, then the manufacturing process is simplified, but the strength of the opening and lid structure is insufficient
Solution Approach 1:
The package is segmented into multiple sheets with distinct functions: the base sheet forms the package body, the intermediate sheet provides structural reinforcement at the opening, and the lid sheet creates the opening-closing mechanism. This segmentation allows each component to be optimized for its specific function while maintaining overall manufacturing efficiency through standardized bonding processes.
Solution Approach 2:
The package employs a composite structure where multiple sheets with different properties are bonded together. The intermediate sheet provides rigidity and strength at the opening area, while the base sheet and lid sheet can be made from materials optimized for their respective functions. This composite approach enhances the overall strength of the opening and lid structure while maintaining manufacturing simplicity.
3Reliability
If the lid sheet is bonded to the base sheet, then the opening-closing function is achieved, but the ease of operation for opening and closing the lid is reduced
Solution Approach 1:
The lid system is segmented into a lid sheet that is not permanently bonded to the base sheet, but rather positioned over the opening with support from the intermediate sheet. This segmentation allows the lid sheet to be easily lifted and placed without requiring forceful separation from a bonded structure, significantly improving ease of operation while maintaining the opening-closing function through gravitational and frictional forces.
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
This configuration allows for enhanced decorative design on the package surface, increased strength of the opening and lid, and easier operation for dispensing sheet-type articles, while maintaining the package's structural integrity and aesthetic appeal.
Implementation Method 1
The first sheet has a heat-sealing sheet which can be bonded by heating or heat-sealed
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
It is an object of the invention to increase a freedom of decorative design to be provided on a package. A base sheet 210 forms a body having a wet-tissue storage space 200a and has a cut 212 formed along an outer edge of a first lid element 213. An intermediate sheet 220 has a cut 222 formed along an outer edge of a second lid element 223. An internal sheet 230 has a cut 232 formed along an opening edge of an opening 232a. One side of the intermediate sheet 220 is bonded to a back of the base sheet 210 by a first adhesive 224 in the state in which the second lid element 223 is positioned to be opposed to the first lid element 213. The other side of the intermediate sheet 220 is bonded to one side of the internal sheet 230 by a second adhesive 225 in the state in which the opening 232a is positioned to be opposed to the second lid element 223 (to be covered by the second lid element 223).