Nylon Blend Filament Strength and Processability

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Solution Overview

Problem

Nylon filament materials often exhibit low strength, deformability, and high cost, limiting their effectiveness in various applications.

Innovation Solution

A filament blend of aliphatic nylon and semiaromatic nylon, with the semiaromatic nylon as a minor component, enhancing mechanical properties and processability while reducing production costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If nylon filament materials are used, then they provide versatility for various applications, but they exhibit low strength and deformability

Engineering Contradiction:

ImprovestrengthVSAvoidversatility

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The patent applies composite materials by blending semiaromatic nylon (providing strength) with aliphatic nylon (providing versatility and processability). This composite approach allows the filament to achieve both high strength and broad applicability across different uses, resolving the contradiction between strength and versatility.

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If nylon filament materials are used, then they provide versatility for various applications, but they exhibit high cost

Engineering Contradiction:

ImproveversatilityVSAvoidcost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent applies local quality by using semiaromatic nylon (a high-performance, expensive material) only as a minor component (5-20% of the blend) to provide essential strength properties, while the majority (80-95%) consists of cheaper aliphatic nylon that provides versatility and processability. This localized use of expensive material reduces overall cost while maintaining versatility.

Inventive Principle:

Principle #3Local quality

3Strength

If nylon filament materials are used, then they provide versatility for various applications, but they exhibit low yield strength

Engineering Contradiction:

Improveyield strengthVSAvoidversatility

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The patent uses composite materials blending semiaromatic nylon (providing yield strength) with aliphatic nylon (providing versatility). The synergistic interaction between the two polymer types in the blend achieves both improved yield strength and maintained versatility for various applications.

Inventive Principle:

Principle #40Composite materials

4Strength

If semiaromatic nylon is used as a major component, then mechanical properties are improved, but processability deteriorates

Engineering Contradiction:

Improvemechanical propertiesVSAvoidprocessability

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The patent applies local quality by limiting semiaromatic nylon to a minor component (5-20% of the blend) rather than using it as the major component. This localized presence provides sufficient mechanical property enhancement while the dominant aliphatic nylon maintains good processability, avoiding the processing difficulties associated with high concentrations of semiaromatic nylon.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS10280533B2Nylon blend for improved mechanical properties of monofilaments and multifilament fibers

Publication Date: 2019.05.07 SHAKESPEARE CO

AI summary

A filament comprising a polymer blend and specific articles comprising the filament are disclosed. The polymer blend includes an aliphatic nylon and a semiaromatic nylon. The aliphatic nylon is the major component of the blend and semiaromatic nylon is the minor component of the blend. The aliphatic nylon can be Nylon 6, Nylon 66, Nylon 610, Nylon 612, Nylon 12, and mixtures thereof. The semiaromatic nylon can be 6I/6T, 6T/6I, and mixtures thereof. The nylon blend filament provides enhanced mechanical properties such as modulus, ultimate strength, and yield strength with improved processability and reduced diameter variability at a reduced cost.