Double-skived Paper Container Moisture Barrier Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing paper-based containers are prone to moisture ingress and leakage due to their construction, which weakens the material and can lead to odor and product leakage, especially when storing liquids or semi-solids, and they are not as durable as single-use plastic containers.
Innovation Solution
A gable-top paper-based container with a low-density polyethylene coating on both surfaces and at least two skived flaps that are folded and adhered to both inside and outside surfaces, creating a seamless structure that prevents moisture and content saturation, thereby enhancing leakage resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If paper-based container construction with folding and adhesion seams is used, then biodegradability and environmental friendliness are improved, but moisture ingress and leakage resistance deteriorate
Solution Approach 1:
A moisture barrier layer is introduced as an intermediary between the paperboard layers to prevent moisture ingress through the seams and adhesion points. This barrier layer acts as a mediator that blocks the harmful moisture while allowing the paper-based construction to maintain its biodegradable properties.
Solution Approach 2:
The container construction combines multiple materials including paperboard, moisture barrier layers, and coating materials to create a composite structure that simultaneously achieves moisture resistance, leakage prevention, and biodegradability. The composite nature allows each layer to address specific weaknesses of the individual materials.
2Reliability
If paper-based material is used without protective coating, then biodegradability is improved, but durability and saturation resistance deteriorate
Solution Approach 1:
A thin film coating is applied to the paper-based material to create a protective shell that prevents saturation by blocking moisture and content penetration. This thin film provides durability and saturation resistance while maintaining the underlying biodegradable paper structure.
Solution Approach 2:
The paper-based material is combined with protective coating materials to form a composite structure where the coating provides durability and saturation resistance while the paper core maintains biodegradability and structural integrity.
3Ease of operation
If multiple seams and adhesion points are present, then container assembly flexibility is improved, but structural integrity and leakage prevention deteriorate
Solution Approach 1:
Moisture barrier layers are positioned at seam and adhesion locations to act as intermediaries that prevent moisture penetration through these vulnerable points. The barrier layers bridge the gaps and weak points created by folding and adhesion, maintaining structural integrity.
Solution Approach 2:
Moisture barrier layers and protective coatings are applied in advance during manufacturing to preemptively seal potential leakage paths at seams and adhesion points before the container is put into service. This preliminary protection prevents moisture ingress at the most vulnerable locations.
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 significantly reduces unwanted moisture and odor leakage, making the container more durable and resistant to breakdown over time, while maintaining biodegradability and being relatively inexpensive to manufacture.
Implementation Method 1
a paper-based material having a relatively low-density polyethylene coating on one or both surfaces/sides of the material
Implementation Method 2
Each skive flap is preferably folded and constructed in such a manner that a portion of the outside surface of the container is adhered to the inside surface
Data Source
AI summary
The present invention relates generally to a new and improved paper-based container. More specifically, the invention relates to a paper-based container that is comprised of a relatively low-density polyethylene coating on one or both surfaces of the container and at least two skive flaps, wherein each of said skive flaps is created during the manufacturing process. The skive flap further comprises at least one leading edge of the container body, and prevents unwanted moisture from entering the container and the contents of the container from saturating the paper-based material. One skive flap is preferably folded in a manner in which a portion of the outside surface of the container is adhered to the inside surface, and a second skive flap is adhered to the outside surface.