Dipping Composite Material for Cut-Resistant Chemical Gloves

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Solution Overview

Problem

Existing dipping layers for gloves do not enhance cut resistance, despite improving chemical resistance, grip strength, and wear resistance.

Innovation Solution

A dipping composite material is developed by adding metal oxides, silica, glass fibers, basalt fibers, or aramid fibers to latex, such as neoprene or nitrile rubber, to significantly improve the cut resistance of chemical-resistant gloves.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional dipping layers (neoprene, nitrile) are used, then chemical resistance and wear resistance are improved, but cut resistance cannot be enhanced

Engineering Contradiction:
Improvechemical resistanceVSAvoidcut resistance
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The patent applies composite materials by combining traditional latex (neoprene or nitrile) with cut-resistant additives (metal oxides, silica, glass fiber, basalt fiber, or aramid fiber). This creates a composite dipping layer that simultaneously provides chemical resistance from the latex matrix and cut resistance from the embedded fibrous or particulate additives, resolving the contradiction between chemical resistance and cut resistance.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent applies local quality by distributing cut-resistant additives (particularly fibers like aramid, basalt, or glass fiber) throughout the latex matrix. The fibers are localized within the dipping layer to provide cut resistance specifically where needed, while the latex continues to provide chemical resistance throughout the entire layer, allowing each material to perform its specialized function in the appropriate location.

Inventive Principle:
Principle #3Local quality

2Strength

If fibers (glass fiber, basalt fiber, aramid fiber) are added to latex, then cut resistance is significantly improved, but manufacturing complexity increases

Engineering Contradiction:
Improvecut resistanceVSAvoidmanufacturing complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-mixing the fibrous additives (glass fiber, basalt fiber, or aramid fiber) into the latex compound before the dipping process. This preliminary incorporation ensures uniform distribution of cut-resistant fibers throughout the latex, simplifying the manufacturing process compared to attempting to add fibers during or after dipping, and eliminating the need for complex post-processing steps.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent applies parameter changes by optimizing the ratio of fibrous additives to latex (1-6 parts fiber to 10 parts latex) and controlling the physical state of additives (metal oxide as whisker/liquid/powder, fibers as staple or pulp). These parameter optimizations ensure that the composite material maintains proper viscosity and processability during dipping while achieving the desired cut resistance, thereby managing manufacturing complexity.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12024630B2Dipping composite material for enhancing cut resistance of chemical-resistant gloves
Publication Date: 2024.07.02 HONGHAN NANTONG PROTECTION OF SCI &TECH CO LTD

AI summary

Disclosed is a dipping composite material for enhancing the cut resistance of chemical-resistant gloves, wherein an additive is added to a latex, and the additive is a metal oxide and/or silica and/or glass fiber and/or basalt fiber and/or aramid fiber. The present invention improves the formula of a dipping layer such that the dipping layer has the cut resistance, which can significantly improve the cut resistant level of gloves.