Cold-Seal Packaging Web Folding Hinges for Easier Wrapping
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Solution Overview
Problem
Existing packaging material webs and bags require significant force to fold and wrap around items, and they have limited adaptability to different article sizes, leading to inefficiencies in packaging processes.
Innovation Solution
A packaging material web made of paper or cardboard, particularly corrugated cardboard, with longitudinal edge strips coated with a cold-sealable adhesive and folding hinges, allowing easy folding and sealing without additional heat, and featuring a design that can be adjusted to fit various sizes and shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the packaging material web uses conventional adhesives and folding design, then the sealing strength is sufficient, but a relatively large amount of force is required to fold and wrap the material around the article
Solution Approach 1:
The patent applies preliminary action by pre-creasing the packaging material web to form folding hinges before the actual packaging process. These pre-formed hinges create predetermined fold lines that guide the material around the article, significantly reducing the force needed during wrapping while maintaining sealing integrity through the adhesive-coated longitudinal edge strips.
2Adaptability or versatility
If the packaging material web uses a fixed design, then the manufacturing process is simple, but it only adapts to different article sizes to a limited extent
Solution Approach 1:
The patent applies segmentation by dividing the packaging material web into multiple longitudinal sections separated by folding hinges. This segmentation allows each section to be independently positioned and adjusted around articles of varying sizes and shapes, enabling the same packaging design to adapt to different dimensions while maintaining a relatively simple overall structure.
3Reliability
If the packaging material web uses extensive adhesive coating for complete sealing, then the sealing reliability is high, but the amount of adhesive required increases
Solution Approach 1:
The patent applies local quality by coating only the longitudinal edge strips with adhesive rather than the entire surface of the packaging material web. This localized adhesive application ensures reliable sealing at the critical bonding zones where the material wraps around and contacts itself, while minimizing adhesive consumption on areas that do not require bonding.
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 enables easier and more efficient packaging with reduced adhesive use, improved adaptability to item sizes, and the ability to form precise, reusable packaging bags with minimal material waste.
Implementation Method 1
The longitudinal edge strips are provided, at least partially, with a cold-sealable adhesive
Data Source
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AI summary
The present invention relates to a packaging material web, in particular made of paper or paperboard, in particular corrugated paperboard, wherein at least one longitudinal edge strip adjoining a longitudinal edge is provided at least in sections with a cold-sealing adhesive and has at least one folding joint extending in the longitudinal direction of the web, in particular centrally in relation to a width measured transverse to the longitudinal direction of the web, which folding joint defines a folding axis along which two longitudinal web sections connected by means of the folding joint can be folded, wherein the packaging material web is free of cold-sealing adhesive at least in sections along the folding joint.