Loop-Handle Carrier Bag Structure for Fast Stacking and Tear Resistance
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Solution Overview
Problem
Conventional carrier bags used in supermarkets are not tear-resistant enough for heavy items, leading to increased checkout times and potential spills, and existing solutions for rapid bag opening and stacking are not suitable for bags with separate handles.
Innovation Solution
A carrier bag design featuring flexible loops as handles, with specific edge and seam configurations that enhance tear resistance and facilitate easy separation from a stack, including a foldable bottom and strategic placement of weld or glue seams for stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional carrier bags with die-cut holes or T-shirt bag handles are used, then checkout speed may be improved, but tear resistance deteriorates significantly
Solution Approach 1:
The bag is divided into multiple identical units stacked together, with each unit having its own complete handle structure. The handles of adjacent bags are interconnected through a coupling mechanism that allows easy separation while maintaining individual integrity, enabling rapid checkout without compromising tear resistance of each individual bag
Solution Approach 2:
Multiple bags are nested within each other in a compact stack, with handles of inner bags passing through or coupling with handles of outer bags. This nested arrangement space-efficient storage and rapid retrieval while preserving the structural integrity and tear resistance of each bag
2Stability of the object's composition
If bags are attached to each other using fastening means, then stacking is improved, but bag integrity deteriorates due to tearing and appearance damage
Solution Approach 1:
The fastening means are positioned outside the main body of the bags, specifically at the handle level. This extraction of the attachment function to the handle region allows bags to be stacked and separated without the fastening means contacting or damaging the bag body, thus preserving bag integrity and appearance while maintaining stacking stability
Solution Approach 2:
A separate coupling mechanism or fastening means acts as an intermediary between adjacent bags, positioned at the handles rather than on the bag bodies. This intermediary element enables stable stacking while isolating the bag materials from direct contact with fastening components, preventing tearing and appearance damage
3Strength
If separate carrier handles are used instead of die-cut holes, then tear resistance is improved, but stacking and separation capability deteriorates
Solution Approach 1:
The handling function and stacking function are merged into the handle structure. The handles of adjacent bags are interconnected through a coupling mechanism that allows the entire stack to be moved together while enabling easy separation of individual bags, thus maintaining tear resistance of separate handles while improving stacking and separation capability
Data Source
AI summary
A carrier bag has a first side panel (back panel) with a first carrier handle, which may be a first flexible loop, and an opposing second side panel (front panel) with a second carrier handle, which may be a second flexible loop. The first side panel has a first upper edge and a first lower edge as well as two opposite first side edges, wherein the second side panel has a second upper edge and a second lower edge as well as two opposite second side edges. The first and second side panels are connected to each other at or adjacent to the respective first and second side edges to form lateral sides of the bag, or the first and second side panels are connected at the first and second side edges to opposing lateral walls to form lateral sides of the bag. A bottom of the bag is formed by a bottom wall that is connected to the first and second lower edges or by a weld seam or glue seam that joins the first and second lower edges. An opening is formed between the first and second upper edges, wherein the first upper edge has a first distance from the first lower edge and the second upper edge has a second distance from the second lower edge, wherein the first distance is smaller than the second distance. The first upper edge is displaced by a third distance from the second upper edge. Furthermore, the disclosure relates to a rack of bags comprising such carrier bags as well as a method for producing carrier bags and a process of serially dispensing and opening carrier bags.