Wave-Cut Polymeric Bag Embossed Body Shock Absorption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wave-cut trash bags with thicker lobes for perceived strength and thinner bodies for reduced material usage face challenges in manipulation due to contamination and susceptibility to puncture and tear propagation, with existing solutions not effectively addressing tear resistance and material efficiency.
Innovation Solution
A polymeric film bag with embossed sections and unembossed sections, where the embossed sections provide shock absorption and tortuous tear paths, reducing the likelihood of puncture and tear propagation, while maintaining ease of use and material efficiency by applying the embossing pattern only to the bag body and not the lobes or bottom seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the lobes are made thicker for perceived strength, then the strength is improved, but the ease of operation deteriorates due to contamination and susceptibility to puncture and tear propagation
Solution Approach 1:
The patent applies embossing only to specific regions (the bag body) while leaving the lobes and bottom seal unembossed. This local quality differentiation allows the lobes to maintain their original smooth, easy-to-manipulate properties while the embossed body provides shock absorption and tear resistance where needed.
Solution Approach 2:
The patent divides the bag into embossed sections (body) and unembossed sections (lobes and bottom seal). This segmentation allows different parts of the bag to have different properties: the embossed body provides structural strength and puncture resistance, while the unembossed lobes remain easy to manipulate for closing.
2Reliability
If embossed sections are applied throughout the entire bag, then shock absorption and tear resistance are improved, but the material usage and cost increase
Solution Approach 1:
The embossing pattern is applied selectively only to the bag body regions that require shock absorption and tear resistance, while the lobes and bottom seal remain unembossed. This localized application reduces material usage and manufacturing cost while maintaining reliability where it is most needed.
Solution Approach 2:
Instead of applying embossing to the entire bag (excessive action), the patent applies embossing only to the necessary portions (partial action) - specifically the body areas that experience shock and tear forces, thereby reducing material consumption and cost.
3Reliability
If embossed sections are applied to the lobes, then shock absorption is improved, but the ease of operation deteriorates due to reduced manipulability
Solution Approach 1:
The patent deliberately excludes the lobes from embossing, maintaining their smooth, unembossed surface that is easy to grasp and manipulate for closing the bag. The embossing is confined to the body regions where shock absorption is needed, creating a functional differentiation between parts.
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 solution enhances shock absorption and tear resistance in wave-cut trash bags, improving handling and reducing material usage without compromising the closure mechanism or increasing weight and cost.
Implementation Method 1
the embossed sections provide shock absorption and tortuous tear paths
Data Source
AI summary
The present invention relates to improvements for the manufacturing of a wave-cut bag of polymeric film, more specifically a wave-cut bag with a body having improved shock, tear and puncture resistance. The polymeric film has an embossed pattern of a plurality of embossed regions that are comprised of a plurality of parallel, linear embosses. Further disclosed is a process for intermittently applying the embossed pattern to a collapsed tube of a blown film extrusion process. The collapsed tube with the intermittently applied embossed pattern is particularly well suited for constructing wave-cut trash bags with the embossed pattern applied to a central body of the wave-cut bags.