Three-Layer Plastic Pouch With Ruffled Intermediate Layer
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Solution Overview
Problem
Existing delivery pouches and bags are prone to damage and contamination due to their single-layer construction, are costly to produce, and often require bulky packaging, which hinders their use in standard letter sorting systems.
Innovation Solution
A three-layered plastic pouch or bag design featuring a first inner layer, a second intermediate layer with ruffled or folded strip-shaped longitudinal areas, and a third outer layer, where the intermediate layer is connected to the first and third layers via transverse welded or glued seams, providing effective padding without increasing volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If single-layer plastic pouches or bags are used, then production cost is low and manufacturing is simple, but impact protection is insufficient and contents can be easily perforated or contaminated
Solution Approach 1:
The patent applies composite materials by combining multiple plastic film layers (first layer, second layer, and third layer) with different properties. The first and third layers provide barrier and structural functions, while the second layer with air bubbles provides cushioning. This composite structure resolves the contradiction by achieving superior impact protection through material composition rather than single-layer thickness, maintaining cost-effectiveness while improving strength.
Solution Approach 2:
The patent implements nesting by placing the second layer containing air bubbles between the first and third layers. The air bubbles are nested within the plastic film structure, creating a hierarchical arrangement where protective elements are embedded within the overall pouch structure. This resolves the contradiction by integrating multiple protective functions within a compact multi-layer configuration.
2Strength
If paper pouches with inner air bubble film are used, then impact protection is improved, but the envelopes become very thick and costly to produce
Solution Approach 1:
The patent uses flexible plastic film layers instead of rigid paper structures. The thin plastic films with integrated air bubbles provide cushioning without the bulk of traditional paper padding. This resolves the contradiction by achieving impact protection through flexible, thin-layer construction rather than thick rigid materials, reducing overall envelope thickness while maintaining protective capabilities.
Solution Approach 2:
The patent creates a composite structure where plastic films and air bubbles work together to provide protection. The combination of flexible plastic material with air cushioning creates an efficient protective system that achieves impact resistance with minimal thickness, avoiding the bulk associated with traditional paper-based padded envelopes.
3Strength
If traditional delivery pouches are used, then padding is provided, but packing volume increases and storage efficiency decreases
Solution Approach 1:
The patent merges the packaging structure with the padding function by integrating air bubbles directly into the pouch walls through the second layer. Rather than adding separate padding materials that increase volume, the cushioning elements are combined with the structural layers themselves. This resolves the contradiction by achieving padding protection without additional volume, as the protective and structural functions are unified in the same components.
Solution Approach 2:
The use of thin plastic film layers with embedded air bubbles provides padding protection in a space-efficient manner. The flexible films conform to the contents while the air bubbles provide cushioning, achieving protection without the rigid bulk of traditional packaging materials. This resolves the contradiction by delivering padding functionality with minimal volume addition.
4Strength
If voluminous delivery pouches are used for adequate padding, then protection is improved, but transportation and sorting on standard letter sorting systems is hindered
Solution Approach 1:
The patent employs flexible thin plastic film layers that can be easily processed by automated sorting equipment. The thin-film construction with integrated air bubbles maintains protection capabilities while creating a profile compatible with standard letter sorting systems. This resolves the contradiction by achieving adequate padding through efficient material usage rather than increased size, ensuring compatibility with existing infrastructure.
Solution Approach 2:
The patent changes the physical parameters of the packaging by using thin plastic films with controlled air bubble structures instead of bulky traditional materials. This parameter change reduces the overall dimensions and flexibility characteristics to match the requirements of automated sorting systems while maintaining protective functions. The solution adapts the packaging parameters to fit within standard system constraints.
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 effectively protects contents from damage and contamination, reduces production costs, and allows for efficient transportation and sorting on standard letter sorting systems without compromising padding characteristics.
Implementation Method 1
the at least one second layer comprises a plurality of riffled or folded strip-shaped longitudinal areas
Implementation Method 2
said at least one second layer is connected by way of welded and/or glued seams, which run transverse to the riffled or folded strip-shaped longitudinal areas
Implementation Method 3
said at least one second layer is connected by way of welded and/or glued seams
Data Source
AI summary
The present disclosure provides a plastic pouch or bag comprising a front wall, a rear wall, an opening and a bottom. The front wall and/or the rear wall have at least three layers, wherein the at least three-layered front wall and/or the at least three-layered rear wall comprise one first layer (inner layer), at least one second layer (intermediate layer) and one third layer (outer layer). The first layer faces the inside of the pouch or bag in relation to the second layer and/or forms the inner side, wherein the at least one second layer is arranged between the first and third layer and comprises or consists of a plastic film, and wherein the third layer faces the outside of the pouch or bag in relation to the second layer and/or forms the outer side. The at least one second layer comprises a plurality of riffled or folded strip-shaped longitudinal areas at a distance from each other, and the at least one second layer is connected to the first and/or third layer by means of welded and/or glued seams, which run transverse to the riffled or folded strip-shaped longitudinal areas.