Pheromone Polymer Rod Loop Design for Stable Tree Installation

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Solution Overview

Problem

Existing sustained-release pheromone preparations face issues with high production costs, installation difficulties, and stability, particularly when exposed to natural elements and agricultural activities, leading to potential detachment from trees.

Innovation Solution

A pheromone preparation using a polymer tube or rod formed into specific shapes with controlled curvature and angles, allowing easy installation and stable retention on trees without falling off, even under adverse conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a metal wire is added to the polymer tube to improve installation stability, then the preparation can be stably held on trees, but the production cost and filling cost increase significantly

Engineering Contradiction:
Improveinstallation stabilityVSAvoidproduction cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The invention removes the metal wire component from the preparation structure, extracting the harmful and costly element while maintaining installation stability through the polymer tube's own elastic properties and loop configuration

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention replaces expensive metal wires with a disposable polymer tube structure that can be easily manufactured and installed, accepting that the polymer itself serves as the complete preparation without needing additional supportive components

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

2Reliability

If a metal wire is added to the polymer tube to improve installation stability, then the preparation can be stably held on trees, but the installation process becomes time-consuming due to twisting operations

Engineering Contradiction:
Improveinstallation stabilityVSAvoidinstallation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The invention removes the metal wire component that requires twisting operations, eliminating the time-consuming installation step while maintaining stability through the polymer tube's inherent elastic recovery properties

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The polymer tube's elastic properties enable it to self-adjust and self-secure on the tree branch without requiring manual twisting or additional fastening operations, making the installation process simpler and faster

Inventive Principle:
Principle #25Self-service

3Reliability

If a metal wire is added to the polymer tube to improve installation stability, then the preparation can be stably held on trees, but the preparation becomes troublesome to remove after use

Engineering Contradiction:
Improveinstallation stabilityVSAvoidremoval ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The invention removes the metal wire that creates removal difficulties, allowing the entire preparation to be easily detached and removed from the tree as a single polymer component

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The polymer tube's flexibility and lack of rigid components enable it to be easily manipulated and removed by hand without requiring tools or complex detachment procedures

Inventive Principle:
Principle #25Self-service

4Reliability

If a metal wire is added to the polymer tube to improve installation stability, then the preparation can be stably held on trees, but the pruning blade may be damaged during pruning operations

Engineering Contradiction:
Improveinstallation stabilityVSAvoidpruning blade damage
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention removes the metal wire component that poses a risk to pruning blades, eliminating the harmful factor while maintaining preparation stability through the polymer tube's elastic properties

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention uses a disposable polymer-based preparation that eliminates metal components, protecting pruning equipment from damage while the preparation serves its intended short-term function

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

5Ease of operation

If the polymer tube ends are joined together to form a loop for easy installation, then the preparation can be hung on trees without metal wires, but the tube may be fused, adhered or have gaps that cause installation limitations or detachment

Engineering Contradiction:
Improveinstallation easeVSAvoidinstallation stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The invention forms the polymer tube into a circular loop shape, utilizing the curved geometry to provide stable placement on tree branches while maintaining the tube's integrity and pheromone release function

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The invention carefully controls the tube's physical parameters including curvature radius (5-20mm) and circularity to ensure the loop maintains stability on branches without fusing or creating gaps that would cause detachment

Inventive Principle:
Principle #35Parameter changes

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 provides reliable, long-term sustained release of pheromones by maintaining stability and ease of installation, overcoming previous issues of detachment and cost inefficiencies.

Implementation Method 1

by bending and turning a polymer tube (1) into a given shape, there can be obtained a sustained-release pheromone preparation that is capable of being easily installed and stably retained in an installation location

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentEP4186362B1Pheromone substance-containing polymer rod
Publication Date: 2025.07.30 SHIN ETSU CHEMICAL CO LTD
  • EP4186362B1 patent drawingFigure 1A~2B
  • EP4186362B1 patent drawingFigure 3A~4C
  • EP4186362B1 patent drawingFigure 5A~6

AI summary

Provided is a sustained-release pheromone preparation that can be easily installed and stably retained in an installation location. A sustained-release pheromone preparation 10 is comprised of at least one pheromone substance 3-containing polymer tube with both ends 2 sealed or pheromone substance 3-containing polymer rod, wherein (a) a closed space 6 is formed in a front view by bending in an arc and crossing the polymer tube or polymer rod, and the sustained-release pheromone preparation 10 is not crossed in a side view; (b) a curvature radius R established by bending in an arc and crossing the polymer tube or polymer rod is 4 to 17 mm; (c) a linear distance D from a top point 7 of an arc formed by bending the polymer tube or polymer rod in an arc to a crossover point 5 is 25 to 70 mm; and (d) a repelling force when opening the crossover point 5 to establish a clearance G of 20 mm in the front view is 0.5 N or larger.