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Conveyor system lubricant

Inactive Publication Date: 2005-12-29
ECOLAB USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008] The present invention relates to lubricants for conveyors and for containers which includes an effective lubricating amount of at least one lubricant and at least one protectant

Problems solved by technology

Formation of such deposits on a conveyor can change the lubricity of the conveyor and require shutdown to permit cleanup.
Some aqueous conveyor lubricants are incompatible with thermoplastic beverage containers made of polyethylene terephthalate (PET) and other plastics, for example, and can cause stress cracking (crazing and cracking that occurs when the plastic polymer is under tension) in carbonated beverage filled plastic containers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

examples

Test Methods

1. PET Bottle Sress Test (#Failures / 24)

[0046] Standard 2-liter PET beverage bottles (commercially available from Constar International) were charged with 1850 g of chilled water, 31.0 g of sodium bicarbonate and 31.0 g of citric acid. The charged bottle was capped, rinsed with deionized water and set on clean plastic lines or paper towels overnight. The bottoms of 12 bottles were dipped in a 200 g sample of 0.5% lube solution which was prepared using DI water with 200 ppm added alkalinity. The bottles were then placed in a bin and 85.2 g of the lube solution is evenly distributed to the bottom of the bin. The bottles / bin were stored in an environmental chamber at 37.8° C., 90% relative humidity for 28 days. Burst bottles were tracked throughout the test. The bottles were removed from the chamber, observed for crazes, creases and crack patterns on the bottom. The bottles were rated using the following method, and an overall grade assigned.

[0047] 0=No signs of crazing...

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Abstract

A conveyor lubricant including an effective lubricating amount of at least one lubricant and at least one protectant which is an alkanolamide, alkyl ether sulfonate, acetylenic diol, alkyl ether carboxylic acid or salt thereof, alkylated diphenyl oxide disulfonic acid or salt thereof or a mixture thereof, and methods of using the same.

Description

BACKGROUND OF THE INVENTION [0001] The present invention relates to conveyor lubricant compositions and to methods of using the same. [0002] In commercial container filling or packaging operations, the containers typically are moved by a conveying system at very high rates of speed. In most packaging operations, the containers are moved along conveying systems, usually in an upright position, with the opening of the container facing vertically up or down, and are moved from station to station, where various operations are performed including, for example, filling, capping, labeling, sealing, and so forth. Thus, in particular in the beverage industry, it is important that the containers move without hindrance along the conveyor such that no liquid is spilled onto the conveyor during the times when the containers are open. This is particularly important for dairy based beverages such as milk because milk can coagulate on the equipment surfaces. Lubricants are thus commonly used to ens...

Claims

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Application Information

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IPC IPC(8): C10M141/00C10M173/02
CPCC10M173/025C10M2201/022C10N2240/52C10N2210/02C10M2229/02C10M2201/082C10M2207/0225C10M2207/046C10M2207/122C10M2207/1253C10M2207/126C10M2207/128C10M2207/289C10M2209/104C10M2209/108C10M2209/12C10M2215/04C10M2215/042C10M2215/082C10M2219/044C10M2209/105C10N2010/04C10N2040/38
Inventor LAWRENCE, MICHELWICHMANN, GERALD
Owner ECOLAB USA INC
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