Double Loop Handle for Heavy Plastic Bags
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Solution Overview
Problem
Existing plastic container bags for animal foodstuffs are uncomfortable to handle and maneuver due to the placement of handles, leading to inefficient lifting and tilting, which can cause strain and risk breakage, especially with heavy or large bags.
Innovation Solution
A double loop handle is positioned on one side of the bag in an intermediate position between the bottom and top edge, bound to the bag at three points with a single closure label, allowing for even force distribution and easier grasping, enabling horizontal carrying and easier tilting for pouring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single side handle is used on container bags, then the device complexity is reduced, but the ease of operation deteriorates because users cannot easily tilt and turn heavy bags for pouring
Solution Approach 1:
The single handle is divided into two separate handles, each capable of independent use. This segmentation allows users to grasp one handle for lifting and the other handle for tilting and turning operations, significantly improving ease of operation while maintaining relatively simple device complexity
Solution Approach 2:
Each handle is designed to serve multiple functions: both handles can be used for lifting the bag, and at least one handle is positioned to facilitate tilting and turning operations. This multi-functionality resolves the contradiction by enabling a single handle structure to perform both lifting and maneuvering tasks
2Ease of manufacture
If the handle is positioned at the top edge of the bag, then the ease of manufacture is improved, but the ease of operation deteriorates because short users cannot lift the bag from the ground
Solution Approach 1:
The handle position is optimized for different operational needs: one handle is positioned at the top edge for easy manufacturing and lifting, while the second handle is positioned at an intermediate height to facilitate ground-level grasping and tilting operations, creating local quality variations that address different user requirements
3Ease of operation
If the handle is positioned on the side of the bag, then the ease of operation for horizontal carrying is improved, but the ease of manufacture deteriorates due to additional positioning requirements
Solution Approach 1:
By segmenting the handle system into two separate handles with different positions, the patent enables horizontal carrying through side-positioned handles while maintaining top-edge positioning for manufacturing simplicity, thus resolving the contradiction between operational ease and manufacturing ease
4Device complexity
If a single handle is used, then the device complexity is reduced, but the reliability deteriorates because tensile forces are concentrated at two points risking breakage
Solution Approach 1:
The single handle is segmented into two separate handles, which distributes the tensile forces across four attachment points instead of two, reducing the stress concentration and improving reliability while maintaining relatively simple device complexity
Solution Approach 2:
The two handles are combined as integral parts of the same bag structure, sharing the load-bearing function and working together to distribute tensile forces, thereby improving reliability without significantly increasing device 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
The double loop handle reduces the effort required for handling and transporting the bag, distributes tensile forces more evenly, and decreases the risk of handle or bag material breakage, making it easier to lift and pour contents without deformation.
Implementation Method 1
the application of a strip constituting the handle which is heat sealed at its ends to the film or support surface facing the inside of said bag and the application of a label to close the hole
Data Source
Figure 1
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Figure 5
AI summary
The invention is a plastic container bag (S) with a handle (C) comprising a strip bound on one side (S4) of said bag (S). Said bag (S) is made of at least one film or support material (A), with at least two holes (A1, A3), and comprising a label (B) to close said holes (A1, A3), applied on the surface (A4) of the film (A) facing the inside of the bag (S), and where said handle (C) is bound to said label (B) from the outside of the bag (S) in at least two areas (C1, C5), in correspondence with said two holes (A1, A3) of said film or support material (A) .