Integrated Side Gusset Layout for Two-Line Bag Making
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Solution Overview
Problem
Existing bag making apparatuses require multiple operations to dispose and align side gussets, reducing production efficiency, particularly in two-line bag making processes.
Innovation Solution
A bag making apparatus and method that involves pre-disposing a folded side gusset between panel webs, temporarily fixing it, forming lines of weakness, dividing along these lines to create open edges, and guiding the panel web to open the gusset, followed by sequential heat-sealing and cutting to form bags with an end face part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If side gussets are disposed by locating one side gusset on one side with respect to the division line and the other side gusset on the other side to align them in a single line, then the bags can be properly formed with aligned open surfaces, but the operation of supplying side gussets must be performed twice which reduces production efficiency
Solution Approach 1:
The patent merges the supply of two separate side gussets into a single integrated side gusset component. This side gusset includes a first side gusset portion and a second side gusset portion connected through a folded portion, allowing both sides to be supplied simultaneously in one operation rather than requiring two separate supply operations, thereby resolving the contradiction between alignment precision and production efficiency
Solution Approach 2:
The side gusset is segmented into distinct portions (first side gusset portion, second side gusset portion, and folded portion) that can be independently positioned and aligned. This segmentation allows the single integrated side gusset to be properly aligned with division lines while maintaining the efficiency of single-supply operation
2Productivity
If two-line bag making is implemented to increase production efficiency, then more bags can be produced per cross-cutting, but the complexity of disposing and aligning side gussets increases requiring multiple operations
Solution Approach 1:
The integrated side gusset design serves multiple functions simultaneously: it provides both first and second side gusset portions for two-line bag making, enables single-supply operation, and ensures proper alignment through its folded portion structure. This multi-functionality allows two-line bag making to achieve high productivity without proportionally increasing process complexity
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
Enhances production efficiency by simplifying the process of aligning and integrating side gussets, allowing for seamless formation of bags with an end face part, thereby improving overall productivity.
Implementation Method 1
a temporary seal device configured to seal the side gusset to the first and second panel webs to form temporary sealed sections after the superposing of the first and second panel webs
Data Source
AI summary
First and second panel webs are superposed on each other and fed in their longitudinal direction. After a side gusset is temporarily fixed to the second panel web, the side gusset is divided by a dividing device to form a pair of open edges. The open edges are aligned with a line of weakness of the first panel web when the first and second panel webs are superposed on each other. The side gusset is temporarily sealed to the first and second panel webs by a temporary seal device to form temporary sealed sections. The first panel web is guided to be divided along its line of weakness and to be folded on the sides of its division edges. This guiding of the panel web and the temporary sealed sections cause the side gusset to be opened at the open edges to form open surfaces. An end face web is then disposed on the panel web to be superposed on folded parts of the panel web and the open surfaces of the side gusset.