Composite Liquid Pack Cylindrical Exterior Bag Interior
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Solution Overview
Problem
Conventional liquid material packaging systems have low volume efficiency, difficulty in opening for children or elderly, and inefficient use of space during transportation and display due to cylindrical designs and gable top paper packs.
Innovation Solution
A composite pack with a bag-shaped interior member and a cylindrical exterior member featuring a sealing structure unit with vertical ribs that can be easily opened and closed, allowing for increased volume efficiency and space-saving capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a cylindrical exterior member with a plate-like top portion is used to house the interior member, then the exterior member can be easily manufactured, but the volume efficiency for liquid material becomes low
Solution Approach 1:
The invention changes the top portion from a plate-like structure to a cylindrical structure that extends in the vertical dimension. This allows the interior member to be filled to the top of the exterior member, maximizing the volume efficiency while maintaining the ease of manufacture of the cylindrical exterior member.
2Device complexity
If the top portion is made plate-like to simplify the structure, then the structure becomes simpler, but the housing volume for liquid material is reduced
Solution Approach 1:
The top portion is extended in the vertical dimension to form a cylindrical structure instead of a plate-like structure. This increases the housing volume for the interior member while maintaining relatively simple manufacturing processes.
3Stability of the object's composition
If a gable top paper pack is used to provide self-supportability, then self-supportability is achieved, but the pack cannot be built up by overlapping and wasted space is generated
Solution Approach 1:
The exterior member uses a cylindrical shape with a curved surface instead of a gable top structure. This allows multiple packs to be stacked and built up efficiently by overlapping, eliminating the wasted space generated by gable top designs while maintaining self-supportability through the cylindrical form.
4Reliability
If the sealing strength is increased to prevent liquid leakage, then liquid leakage is prevented, but children or old men cannot open the pack by hand force
Solution Approach 1:
The sealing structure is divided into multiple segments including a first sealing portion and a second sealing portion. This segmentation allows the sealing function to be distributed across multiple elements, enabling reliable sealing while providing different opening mechanisms for different user groups.
Solution Approach 2:
Different portions of the sealing structure have different properties: the first sealing portion provides strong sealing to prevent leakage, while the second sealing portion is designed to be easily opened by children or elderly people through a simple operation such as pulling a tab or breaking a weak point.
Data Source
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AI summary
A composite pack for filling liquid material comprised of an interior member as a non-self-standing type liquid material filling package member of filling a liquid material and an exterior member capable of stably holding the interior member, which is capable of attaining a volume efficiency of the liquid material and space saving, is comprised of a bag-shaped interior member formed by the liquid material into a soft package bag and an exterior member for housing the interior member and provided with a cylindrical body, a bottom wall disposed at a lower end of the cylindrical body and an opening portion formed in an upper end of the cylindrical body, wherein the interior member is provided with a sheet-like nozzle for pouring the liquid material protruded in an upper end portion or a side end upper portion of the package bag, and the exterior member is provided at the opening portion thereof with a sealing structure unit comprised of a top face wall closing the opening portion and plural vertical rubs standing from the top face wall.