Folded stack of tissues

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Solution Overview

Problem

Existing sheet dispensers face issues with initial sheet removal due to narrow openings, uneven sheet exposure leading to fallback or streaming, and non-uniform stack thickness causing packaging inefficiencies and stability problems.

Innovation Solution

A folded stack of tissues with a C-fold pattern, where at least a portion of the tissues are folded with leading edges overlapping, creating a compact and uniformly heighted stack suitable for small dispensers, with less than half the sheet's width exposed for improved dispensing and packaging efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a narrow dispensing opening is used, then sheet protection and packaging compactness are improved, but initial sheet removal becomes difficult and double sheet pulls occur

Engineering Contradiction:
Improvesheet protectionVSAvoidinitial sheet removal
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The leading edge of each sheet is pre-positioned adjacent to the dispensing opening through specific folding configurations (e.g., Z-fold, C-fold patterns), ensuring that the sheet is ready for immediate removal without requiring the user to reach deep into the package. This preliminary positioning of the grasping area resolves the contradiction by making sheets easy to remove while maintaining a narrow opening for protection.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If sheet exposure height is increased, then grasping ease is improved, but streaming and double pulls occur

Engineering Contradiction:
Improvegrasping easeVSAvoidstreaming
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

Different portions of the sheet have different functions: the leading edge is positioned to extend beyond the package for grasping, while the bulk of the sheet remains protected inside. The folding pattern creates a gradient of exposure, with only the necessary portion (leading edge and part of the sheet body) exposed at the dispensing opening. This local differentiation resolves the contradiction by providing sufficient grasping area without exposing enough sheet to cause streaming.

Inventive Principle:
Principle #3Local quality

3Object-generated harmful factors

If sheet exposure height is decreased, then streaming is reduced, but sheet fallback and tearing occur

Engineering Contradiction:
Improvestreaming reductionVSAvoidsheet integrity
Core Design Contradiction:
Object-generated harmful factorsVSReliability

Solution Approach 1:

The folding configuration pre-positions the leading edge and creates adequate exposed height before dispensing occurs. By designing the fold pattern to ensure minimum exposed height (sufficient for grasping but not excessive), the system proactively prevents both streaming and sheet fallback/tearing. The preliminary arrangement of the sheet in the folded state ensures that when a user pulls a sheet, there is enough exposed material to grasp and pull without the sheet collapsing back into the package.

Inventive Principle:
Principle #10Preliminary action

4Productivity

If uniform stack thickness is achieved, then packaging efficiency and stability are improved, but manufacturing complexity increases

Engineering Contradiction:
Improvepackaging efficiencyVSAvoidfolding configuration
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The sheet is divided into multiple folded sections (e.g., two C-folds creating three panels, or Z-fold patterns) that can be systematically arranged to achieve uniform stack thickness. By segmenting the sheet into standardized fold patterns, the manufacturing process can efficiently produce uniform stacks without requiring complex variable folding for each sheet. The segmentation into repeatable fold units resolves the contradiction by enabling uniform packaging while maintaining manageable manufacturing complexity through standardization.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS10743726B2Folded stack of tissues
Publication Date: 2020.08.18 KIMBERLY CLARK WORLDWIDE INC
  • US10743726B2 patent drawing
  • US10743726B2 patent drawing
  • US10743726B2 patent drawing

AI summary

The present invention provides a pack of tissues including multiple tissues arranged in a stack and a dispenser enclosing the stack. The dispenser includes a dispensing orifice. At least a portion of the tissues are folded so as to include a leading edge contacting the upper surface of a center panel and a trailing edge contacting the bottom surface of the center panel. The tissues are interfolded such as to have a portion of the leading edge of a first, or preceding, tissue to overlap the leading edge of a second, or succeeding tissue. In this manner, the leading edge of the first tissue terminates at a first vertical axis and the leading edge of the second tissue terminates at a second vertical axis where there is a distance between the first and the second vertical axis that is greater than 0.