Multi-layer Paper Bag Apparatus with Stretchable Inner-core
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Solution Overview
Problem
Conventional production equipment is unable to produce protective bags with an inner-core layer, which is environmentally friendly and effective, due to environmental pollution concerns from existing buffer materials like paper scrap fillers and plastic bubble films.
Innovation Solution
A manufacturing apparatus for environmental paper protective bags, featuring a planar structure with an inner layer, an outer layer, and a network three-dimensional inner-core layer formed by stretching die-cut middle-layer paper material, using specialized devices for tension adjustment, gluing, and press-fitting to create a strong and recyclable bag.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional production equipment is used, then manufacturing capability is maintained, but the ability to produce protective bags with inner-core layer is lost
Solution Approach 1:
The manufacturing apparatus is divided into multiple independent modules: inner layer manufacturing module, outer layer manufacturing module, and inner-core layer manufacturing module. Each module operates independently to produce specific components that are subsequently assembled, enabling the production of complex multi-layer protective bags while maintaining manageable system complexity
Solution Approach 2:
The inner-core layer is nested between the inner layer and outer layer, creating a multi-layer sandwich structure. This nesting approach allows the apparatus to produce protective bags with integrated inner-core layers that provide enhanced protection while maintaining a compact overall structure
2Reliability
If plastic bubble films are used as buffer protective layers, then protection effect is improved, but environmental pollution worsens
Solution Approach 1:
The invention changes the material parameter from plastic to paper-based materials. The inner-core layer uses die-cut paper material with specific porosity and thickness parameters, while the inner and outer layers use paper materials with controlled physical properties. This parameter change maintains protective functionality while eliminating plastic pollution
Solution Approach 2:
The protective bag employs a composite structure combining multiple paper-based materials with different properties. The inner layer, outer layer, and inner-core layer are all paper-based but may have different densities, thicknesses, and structural characteristics, creating a composite material system that provides effective protection without plastic content
3Quantity of substance
If paper scrap fillers are used as buffer protective layers, then cost is reduced, but air dust pollution worsens
Solution Approach 1:
The inner-core layer is constructed from die-cut paper material with controlled porosity, creating a structured porous network that provides buffering protection. This porous structure is manufactured with precision rather than using loose paper scraps, eliminating dust generation while maintaining cost-effectiveness through efficient material utilization
4Shape
If middle-layer paper material is stretched, then network three-dimensional structure is formed, but manufacturing complexity increases
Solution Approach 1:
The middle-layer paper material undergoes die-cutting and stretching operations in advance, before final assembly. This preliminary action creates the network three-dimensional structure of the inner-core layer beforehand, simplifying the subsequent assembly process and reducing overall manufacturing 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 apparatus produces protective bags with a network three-dimensional inner-core layer that provides a better protective effect, is customizable, and achieves strong, high-quality bags that are difficult to damage, while minimizing environmental impact.
Implementation Method 1
the at least one layer of liner is a network three-dimensional structure formed by stretching a middle-layer paper material that has been die-cut
Data Source
AI summary
A manufacturing apparatus of an environmental paper protective bag includes a planar structure manufacturing device including an inner layer unreeling module, an outer layer unreeling module and an inner-core layer unreeling module for unreeling multi-layer paper material, the unreeled multi-layer paper material superimposed, and arranged on a working platform to be transmitted along a conveying direction thereof; a tension adjusting device configured to adjust tension of the multi-layer paper material, a stretching module configured to stretch paper that has been die-cut into a network three-dimensional structure, a plurality of first gluing modules configured to glue bonding positions of the multi-layer paper material to join the multi-layer paper material together, a first press-fit module configured to press the bonding positions of glued multi-layer paper material to form a planar structure, which can solve a technical problem that conventional production equipments can't produce a protective bag with an inner-core layer.