Embossed Slit-Paper Cushioning for Lightweight Shipping Envelopes
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Solution Overview
Problem
Existing shipping envelopes made with plastic bubble materials or heavier Kraft paper alternatives are costly and less flexible, and the manufacturing processes are inefficient for expanded slit sheet material cushioning.
Innovation Solution
A combination of paper sheets, including pleated, expanded slit sheets and embossed Kraft sheets, provides lightweight and protective cushioning by inhibiting deformation through embossments, allowing for a recyclable and cost-effective alternative to plastics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If plastic bubble materials are used for cushioning, then adequate initial cushioning is provided, but the product becomes less flexible and more costly
Solution Approach 1:
The patent transforms paper material parameters through embossing to create air pockets and three-dimensional structures that provide cushioning equivalent to plastic bubble materials. The embossed patterns change the physical parameters of paper, creating void spaces that absorb impact while maintaining the inherent flexibility of paper.
Solution Approach 2:
The invention combines multiple paper layers with different properties - embossed paper for cushioning, regular paper for structural support, and potentially coated papers for moisture resistance. This composite structure achieves plastic-like cushioning performance while maintaining paper's flexibility and recyclability advantages.
2Strength
If heavier Kraft paper alternatives are used, then adequate protection is provided, but shipping costs increase due to increased weight
Solution Approach 1:
The patent uses embossing to change the density and structural parameters of lightweight paper, creating air-filled three-dimensional structures that provide protection equivalent to heavier materials. This allows the use of lighter base papers while achieving the same protective performance, reducing overall envelope weight and shipping costs.
3Productivity
If traditional manufacturing processes are used, then production is maintained, but efficiency is reduced for expanded slit sheet material cushioning
Solution Approach 1:
The patent incorporates expanded slit sheet material during the paper manufacturing process itself, rather than adding it later. The slitting and expansion actions are performed preliminarily during sheet formation, allowing the cushioning structure to be integrated into the paper web before final product assembly, significantly improving manufacturing efficiency.
Data Source
AI summary
According to some illustrative embodiments, a protective product is provided that includes: at least one expandable slit paper sheet, said at least on expandable slit paper being expanded between opposing ends of said slit paper; a first embossed paper sheet facing said expanded slit paper sheet and a second paper sheet facing an opposite side of said at least one expanded slit paper sheet, at least one of said first embossed paper sheet and said second paper sheet being fixed to said expanded slit paper sheet at the opposing ends of said expanded slit paper sheet and thereby maintaining said expanded paper in its expanded state, said first embossed paper sheet having a plurality of embossings that increase the rigidity of said embossed paper sheet, whereby inhibiting deformation of said embossed paper sheet that is fixed to said expanded slit sheet paper.