Tenter Lubricant Composition for Low Evaporation and High-Heat Fluidity

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Solution Overview

Problem

Lubricating oils for tenter machines face challenges in maintaining fluidity and preventing evaporation loss at high temperatures, leading to potential solidification and poor lubrication, while also needing to avoid adherence to produced films, especially in food packaging applications.

Innovation Solution

A lubricating oil composition combining alkylnaphthalene and ester compounds in a specific mass ratio, along with an antioxidant, to minimize evaporation loss and maintain fluidity, preventing residue adherence and solidification.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If a high-viscosity lubricating oil is used to suppress evaporation loss, then evaporation loss is reduced, but fluidity deteriorates and solidified sludge forms at high temperatures

Engineering Contradiction:

Improveevaporation lossVSAvoidfluidity

Core Design Contradiction:

Loss of substanceVSEase of operation

Solution Approach 1:

The patent combines polyol ester-based synthetic oil with alkylate polyaromatic lubricant in a composite formulation. The polyol ester provides base lubricity while the alkylate polyaromatic component suppresses evaporation loss and prevents solidification. This composite approach allows the lubricant to maintain both low evaporation and good fluidity at high temperatures, resolving the contradiction between these two properties.

Inventive Principle:

Principle #40Composite materials

2Reliability

If the supply amount of lubricating oil is increased to maintain lubricity, then lubrication is improved, but adhesion to films increases causing safety issues

Engineering Contradiction:

ImprovelubricationVSAvoidadhesion to films

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters of the lubricating oil by incorporating alkylate polyaromatic lubricant with specific molecular weight and structure. This parameter change reduces the oil's tendency to adhere to films while maintaining its lubricating properties, allowing effective lubrication at lower supply amounts without causing safety issues in food packaging applications.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If a polyol ester-based synthetic oil is used as base oil, then lubricity is provided, but evaporation loss increases at high temperatures

Engineering Contradiction:

ImprovelubricityVSAvoidevaporation loss

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent merges polyol ester-based synthetic oil with alkylate polyaromatic lubricant in a blended composition. The polyol ester component maintains excellent lubricity while the alkylate polyaromatic component contributes low evaporation loss characteristics. This merging of two different lubricant types allows the final composition to achieve both good lubricity and suppressed evaporation at high temperatures.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP3778833B1Lubricant composition

Publication Date: 2023.11.22 IDEMITSU KOSAN CO LTD

AI summary

Provided are: a lubricating oil composition that contains a base oil (A) containing an alkylnaphthalene (A1) and an ester compound (A2), wherein the content ratio of the component (A1) to the component (A2) [(A1)/(A2)] is 15/85 to 85/15 as a ratio by mass, and a tenter device using the lubricating oil composition. The lubricating oil composition has a small evaporation loss, has a suppressed amount of evaporation, maintains good fluidity and hardly causes adherence of residue even in long-term use in high-temperature environments.