Packaging Material Web With Cold-Sealable Adhesive and Folding Joints
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Solution Overview
Problem
Existing packaging material webs and pockets require significant force to fold and adapt to different article sizes, and they do not effectively accommodate varying sizes, leading to inefficiencies in packaging processes.
Innovation Solution
A packaging material web made of recycled paper or cardboard with cold-sealable adhesive on longitudinal edge strips and folding joints, allowing easy wrapping and sealing without additional heat, and featuring folding joints and embossing lines for flexibility and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If packaging material web is made from recycled paper and cardboard with cold-sealable adhesive, then ease of operation is improved, but manufacturing precision deteriorates
Solution Approach 1:
Folding joints are pre-formed during the manufacturing process to create predefined folding lines. This preliminary action ensures that when the packaging material is folded during use, it follows precise predetermined paths, resolving the contradiction between ease of operation and manufacturing precision.
Solution Approach 2:
The packaging material web is segmented into functional zones with different properties: folding joints for bending, adhesive strips for sealing, and adhesive-free zones for flexibility. This segmentation allows each zone to perform its specific function optimally, enabling easy folding while maintaining precision through the structured division of functions.
2Adaptability or versatility
If folding joints and adhesive strips are provided in packaging material web, then adaptability to different article sizes is improved, but device complexity increases
Solution Approach 1:
The packaging material web is designed as a universal structure where folding joints enable adaptation to various article sizes and shapes, while adhesive strips provide sealing functionality. This multi-functional design allows a single packaging material to handle diverse packaging needs without requiring different structural configurations, thus improving adaptability while controlling complexity through standardized universal elements.
Solution Approach 2:
The packaging material web incorporates dynamic folding joints that can be configured in different positions and orientations to accommodate articles of varying sizes. The adhesive strips are strategically placed to allow flexible sealing configurations. This dynamic adaptability enables the same basic structure to transform into different shapes and sizes as needed, improving versatility without proportionally increasing structural complexity.
3Reliability
If adhesive is applied to longitudinal edge strips and transverse strips, then reliability of sealing is improved, but loss of substance increases
Solution Approach 1:
Adhesive is applied selectively only to specific longitudinal edge strips and transverse strips where sealing is required, rather than coating the entire packaging material surface. This localized adhesive application maintains sealing reliability at the critical bonding points while significantly reducing overall adhesive consumption, resolving the contradiction between sealing reliability and substance loss.
Solution Approach 2:
Adhesive-free zones are extracted from the packaging material design, creating specific areas where no adhesive is applied. This extraction of adhesive from non-essential areas reduces adhesive consumption while maintaining sealing reliability in the essential bonding regions, directly addressing the contradiction between reliable sealing and reduced substance loss.
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
Facilitates easy and efficient packaging of articles of varying sizes with reduced material usage and adhesive consumption, enhancing productivity and adaptability while maintaining a secure seal.
Implementation Method 1
The longitudinal edge strips and/or the transverse strips are provided with a cold-sealable adhesive
Data Source
AI summary
A packaging material web, in particular of paper or cardboard, in particular corrugated cardboard, in which at least one longitudinal edge strip adjoining a longitudinal edge is at least sectionally provided with a cold-sealable adhesive, may include at least one folding joint extending in the web longitudinal direction, in particular arranged centrally with respect to a width dimensioned transversely to the web longitudinal direction, which defines a folding axis along which two longitudinal web sections connected by means of the folding joint can be folded over, wherein the packaging material web is free of cold-sealable adhesive at least sectionally along the folding joint.