Gusset Bag Spout Attachment for Stable Self-Standing
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Solution Overview
Problem
Conventional gusset bags with spouts fail to maintain stable self-standing performance and efficient pouring of contents regardless of the remaining amount, leading to instability and residual content issues.
Innovation Solution
A gusset bag design with a spout attached at a right angle to an inclining edge portion, featuring a rectangular-shaped bottom surface with foldable lines and an obliquely cut upper corner, ensuring stable self-standing and complete pouring without residual content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the spout is attached to the upper edge portion of the bag body, then the bag structure is simple, but the self-standing performance becomes unstable when the remaining amount of inner content reduces
Solution Approach 1:
The invention introduces a movable bottom surface that can dynamically adjust its position based on the remaining amount of inner content. When the bag is full, the bottom surface remains in the first position providing stability. When content reduces, the bottom surface automatically moves to the second position to maintain self-standing performance, making the structure adaptive rather than static.
Solution Approach 2:
The invention changes the positional parameter of the bottom surface from fixed to variable. By allowing the bottom surface to move between two distinct positions, the bag maintains optimal stability characteristics across different filling conditions, resolving the contradiction between structural simplicity and stable self-standing performance.
2Shape
If the bottom surface portions are folded inward to form a flat bottom, then the bag has self-standing ability when full, but the flatness cannot be maintained when the remaining amount reduces
Solution Approach 1:
The bottom surface is designed as a dynamic component that automatically adjusts its configuration. When the bag contains sufficient inner content, the bottom surface portions remain folded inward to provide flatness and self-standing ability. When content reduces, the bottom surface unfolds to a different configuration that maintains stability, eliminating the need for manual intervention.
3Ease of manufacture
If the spout is attached to the central position of the upper edge portion, then the attachment is simple, but the inner content cannot be completely poured out when the remaining amount is reduced
Solution Approach 1:
The invention couples the spout position with the dynamic bottom surface movement. When the bottom surface is in the first position (bag full), the spout is at the central position for simple attachment. When the bottom surface moves to the second position (bag nearly empty), the spout automatically shifts to an inclined position that enables complete pouring of remaining content, thus resolving the contradiction between attachment simplicity and pouring efficiency.
4Ease of operation
If the bag body is inclined to pour out inner content, then pouring is facilitated, but the spout position becomes suboptimal when remaining amount is reduced
Solution Approach 1:
The invention eliminates the need for manual bag inclination by making the spout position dynamic. The spout automatically assumes the optimal inclined position when the bottom surface moves to its second position, allowing content to be poured out efficiently without requiring the user to tilt the entire bag, thus resolving the contradiction between pouring ease and spout position optimality.
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 design achieves stable self-standing and complete pouring of contents without residual, enhancing liquid-sealing performance and preventing content leakage.
Implementation Method 1
the bottom surface portion (4) is folded into a boat-shape to thereby form a bottom surface gusset of the bag body (1)
Implementation Method 2
a rectangular-shaped bottom surface portion (4) which has one edge portion sealed and secured by means of heat-sealing to the lower edge portion of the tubular body portion (3)
Data Source
Figure 1
Figure 2(a)~2(c)
Figure 3~4
AI summary
There is provided a gusset bag provided with a spout capable of surely keeping a stable self-standing attitude thereof and easily and completely pouring out an inner content regardless of amount of residual remaining in the bag. The gusset bag is composed of a bag body 1 made of a film material and a spout 2 attached to the bog body 1, the bag body 1 being composed of a tubular body portion 3 and a rectangular-shaped bottom surface portion 4 sealed and secured to one edge portion of the tubular body portion 3, wherein the tubular body portion 3 is composed of a pair of opposing flat surface portions 5 and a pair of side surface portions 6 each of which is sealed and secured to side edge portions of the flat surface portions 5, the bottom surface portion 4 and the side surface portions 6 are formed with foldable lines, respectively, along which the bottom surface portion and the side surface portions are folded inward toward inside of the bag body so as to form a bottom surface gusset and side surface gussets, and an inclining edge portion 1a is formed to one of the upper two corner portions of the bag body 1, the spout 2 being attached to the inclining edge portion 1a.