Staggered Link Pot Assemblies for Wide-Interval Seedling Transplanting

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Solution Overview

Problem

Existing continuous assemblages of pots for transplanting seedlings face issues such as restricted plant spacing due to long link pieces, inadequate water penetration, and complex manufacturing processes, which hinder their use for crops requiring wide intervals and increase costs.

Innovation Solution

A continuous assemblage of pots with staggered link pieces and folded-back portions, using water-soluble and non-water-soluble adhesives to facilitate manufacturing and ensure adequate spacing, allowing easy expansion and separation during transplanting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If the link piece length is increased to provide adequate spacing between seedlings, then the plant interval is sufficient, but the continuous assemblage cannot be used for crops requiring wide intervals and the manufacturing complexity increases

Engineering Contradiction:
Improvelink piece lengthVSAvoidcrop compatibility
Core Design Contradiction:
Length of moving objectVSAdaptability or versatility

Solution Approach 1:

The link piece is divided into multiple segments (first link piece, second link piece, third link piece) with different lengths. The first link piece has length L1, the second has L2, and the third has L3, where L1 < L2 < L3. This segmentation allows different spacing configurations to be used for different crop requirements, providing versatility while maintaining adequate spacing.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different portions of the continuous assemblage have different link piece lengths tailored to local needs. By assigning shorter link pieces in some regions and longer link pieces in others, the system adapts to different crop spacing requirements in different areas of the same assemblage.

Inventive Principle:
Principle #3Local quality

2Shape

If the extension portion of the link piece is folded and attached with water-soluble adhesive, then the structure is compact for storage, but water does not penetrate sufficiently and the adhesive is not degraded, preventing smooth separation during transplanting

Engineering Contradiction:
Improvecompact folded structureVSAvoidseparation smoothness
Core Design Contradiction:
ShapeVSEase of operation

Solution Approach 1:

The link piece is pre-formed with extension portions that can be folded during manufacturing to create a compact structure. However, the folding design ensures that water can still access the adhesive layers during the seedling raising period, allowing natural degradation and smooth separation when needed.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The folded structure is designed to maintain porosity or water permeability even when compacted. The folding geometry allows water to penetrate through the folded portions to reach the water-soluble adhesive, ensuring it can degrade properly when water is applied during transplanting operations.

Inventive Principle:
Principle #31Porous materials

3Strength

If the link piece extension portions are folded and attached to both each other and individual pots, then the structure is stable, but the manufacturing process becomes complex and costs increase

Engineering Contradiction:
Improvestructural stabilityVSAvoidmanufacturing process complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The attachment of extension portions to individual pots is eliminated as a separate operation. Instead, the link pieces are designed to be attached only to adjacent link pieces, and the individual pots are integrated into the structure through the natural positioning provided by the folded link piece configuration, removing a complex manufacturing step.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The functions of providing structural stability and defining pot positions are merged into a single link piece design. The folded link piece structure simultaneously provides mechanical strength and creates the necessary spacing and positioning for individual pots, eliminating the need for separate attachment operations.

Inventive Principle:
Principle #5Merging (Combining)

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 handling of crops with wide plant intervals, simplifies manufacturing, and reduces costs by ensuring efficient seedling transplantation with uniform pot spacing and stable separation.

Implementation Method 1

using a water-soluble adhesive to attach folded back inner faces

Methodology Applied
Scientific EffectWater-soluble adhesive degradation: Solvation

Implementation Method 2

the water does not penetrate sufficiently through the folded portions of the extension portions of the link pieces

Methodology Applied
Scientific EffectWater penetration: Permeation

Data Source

PatentEP4381938B1Continuous collective pot body for continuous transplantation and manufacturing method thereof
Publication Date: 2026.03.25 NIPPON BEET SUGAR MFG CO LTD
  • EP4381938B1 patent drawingFigure 1
  • EP4381938B1 patent drawingFigure 2
  • EP4381938B1 patent drawingFigure 3

AI summary

[Problem] Provided is a continuous assemblage of pots for continuous transplanting capable of handling a seedling crop that requires a wide interval between plants, facilitated in manufacture, and reduced in manufacturing cost, and a method for manufacturing the assemblage. [Solution] A link piece 3 is formed by folding back both sides in a width direction of a strip-shaped sheet onto an identical face by one-sixth of a width of the sheet, using a water-soluble adhesive 21 to attach folded back inner faces, folding back the sheet onto an opposite side of the folding back by a width same as the folded back width, and using the water-soluble adhesive 21 to attach folded back inner faces. A continuous piece 13 is formed by arranging the link pieces 3 in a stagger pattern in a direction in which first folded-back portions 3a are opposed, and attaching both side end portions in the width direction of the first folded-back portion 3a in one link piece 3 to the first folded-back portion 3a of the opposed other link piece 3 using a non-water-soluble adhesive 23. An individual pot 11 is formed between the first folded-back portions 3a of the mutually opposed link pieces 3. In a transplantation of the individual pot 11, by expanding the link piece 3, the length between the individual pots 11 is increased, thus allowing handling a seedling crop that requires a wide interval between plants.