Interleaved Tri-Fold Napkin for One-at-a-Time Dispensing
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Solution Overview
Problem
Tall-Fold and Mini-Fold paper napkins do not dispense consistently one-at-a-time, leading to excess consumption and the need for frequent refills, and are not interchangeable between their respective dispensers, resulting in limited napkin usage flexibility and increased waste.
Innovation Solution
A folded paper napkin design with specific dimensions and interleaving, allowing it to be used in both Tall-Fold and Mini-Fold dispensers, featuring a protruding leading edge for one-at-a-time dispensing and enabling easy refilling with a single napkin type that fits both dispenser types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If napkins are folded without interleaving (Tall-Fold style), then the folded dimensions are larger and easier to handle, but multiple napkins are pulled out at once causing waste
Solution Approach 1:
The napkin stack is segmented through interleaving where each napkin is separated by a portion of the next napkin folded back underneath it. This creates individual accessible edges for each napkin while maintaining the compact folded structure, allowing one-at-a-time dispensing without increasing overall folded dimensions
Solution Approach 2:
The interleaving technique adds a dimensional aspect to the folded napkin structure by folding portions of adjacent napkins in alternating directions (some forward, some backward). This creates a multi-layered interleaved configuration where napkins are separated in the vertical dimension while maintaining horizontal compactness
2Loss of substance
If napkins are interleaved for one-at-a-time dispensing, then napkin waste is reduced, but the folded dimensions become smaller and may not fit standard dispensers
Solution Approach 1:
The patent optimizes specific parameters of the interleaved fold including the fold line positions, the extent of interleaving depth, and the final folded dimensions. By carefully controlling these parameters, the napkin achieves one-at-a-time dispensing capability while maintaining folded dimensions that fit within standard dispenser constraints
Solution Approach 2:
Different portions of the napkin structure have different fold characteristics - some areas are folded forward while adjacent areas are folded backward. This local variation in fold direction creates the interleaved effect that enables one-at-a-time dispensing while maintaining overall compact dimensions suitable for standard dispensers
3Reliability
If different napkin types are used for Tall-Fold and Mini-Fold dispensers, then each dispenser type works optimally, but operational flexibility is reduced and inventory complexity increases
Solution Approach 1:
The interleaved napkin design achieves universality by creating a folded structure with dimensions and characteristics that are compatible with both Tall-Fold and Mini-Fold dispensers. The standardized folded size and interleaved configuration allow the same napkin type to function reliably in different dispenser types, eliminating the need for separate napkin inventories
4Quantity of substance
If Tall-Fold dispensers have large capacity (150 napkins), then refilling frequency is reduced, but patrons can still grab multiple napkins causing waste
Solution Approach 1:
The interleaved structure performs a preliminary action by pre-positioning each napkin with its leading edge accessible and separated from adjacent napkins. This preliminary organization prevents patrons from accidentally grabbing multiple napkins, ensuring one-at-a-time dispensing even in high-capacity dispensers and eliminating the need for frequent refilling due to waste
Data Source
AI summary
The present invention is a folded paper napkin that allows the owner of two (2) or more different types of napkin dispensers to refill those dispensers with the same napkin while still achieving a one-at-a-time rate of withdrawal. More particularly, the present invention is a paper napkin of specific dimensions that is comprised of two (2) folds along its unfolded length and interleaved with a similarly-dimensioned folded napkins.