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Washing machine and washing method

A washing machine and detergent technology, applied in the field of washing machines

Active Publication Date: 2021-04-02
UNILEVER IP HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Additionally, all of these "pre-machine wash" application methods increase consumer exposure to the product (e.g., carrying items between the sink and machine, or spraying solutions from bottles)

Method used

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  • Washing machine and washing method
  • Washing machine and washing method
  • Washing machine and washing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0131] Detergent products formulated according to Table 1 were used to compare the effect of temperature on "power handling" performance. This composition is referred to herein as Composition X.

[0132] Table 1: Composition X

[0133] %w / w water to 100% Monopropylene Glycol 8.00 Non-ionic (C12-14EO7) 5.00 LAS acid 3.33 Triethanolamine 2.00 EPEI 1.81 SLES(2EO) 1.67 Chelating agent 0.88 Texcare 0.82 Empigen OB 0.50 sodium hydroxide 0.35 preservative 0.02

[0134] The "main wash" condition represents the product concentration experienced in a conventional main wash and the "power treatment" condition represents the use of product composition X at a 5:1 dilution. For example, using a liquid detergent product with a hold period of 15 minutes, followed by an ambient wash of 20 minutes, the following results were obtained.

[0135] The results obtained are shown in Table 2:

[0136] Table 2 ...

Embodiment 2

[0141] Shown below are normal wash cycle programs (in wash), programs that include soaking in a top loading unit (vertical axis machine - TLA), bowl soaking (out of machine), power treatment, and direct application at high and low volumes Compare. For various detergent products, it can be observed that the results obtained using the power treatment of the present invention are not dissimilar to direct application. In fact, for some stains, the results were better. This was observed for both biodetergents and non-biodetergents.

[0142] Use the following compositions:

[0143]

[0144]

[0145] Table 3a shows a simulated TLA wash process using a number of different prewash protocols (25°C, 20 min wash, 500ml 13°FH water, 2 rinses, 25:1 liquid:cloth, equal weight cotton) before using the Tergotometer gauge and polyester ballast).

[0146] Cotton fabrics soiled with cocoa milk were exposed to 0.4 g of each product at different dilution levels for 20 minutes, except for ...

Embodiment 3

[0159] In particular, at certain concentrations, the power treatment of the present invention performed better than direct application on certain stains, especially fatty stains. Table 4 shows the results for lard and palm oil, showing a small but perceived benefit.

[0160] The following results are from an experiment in which detergent products formulated according to Table 1 were used to compare the effect of the power treatment process on fatty stains with the effect from direct product application and main wash.

[0161] "Main wash" conditions represent product concentrations experienced in conventional main washes, "direct application" represents use of the neat, undiluted formulation, and "power treatment" represents use of product at 2:1 and 5:1 dilutions. For example, using a liquid detergent product with a hold period of 10 minutes, followed by an ambient wash of 20 minutes, the following results were obtained.

[0162] Table 4

[0163]

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PUM

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Abstract

The invention relates to washing and to a washing machine for performing washing, wherein said washing machine is configured to provide a cycle comprising the steps of: spraying a detergent solution (6) into the washing machine tub (1) in order to wet the tub (1 ), followed by a holding period in which no water (11) or additional detergent solution (6) is added to the tub (1).

Description

[0001] Cross References to Related Applications [0002] This application claims the priority benefit of EP15176603.7, EP15176604.5 and EP15176605.2, each filed on July 14, 2015. Each of these patents is incorporated by reference in its entirety. technical field [0003] The present invention relates to a washing machine configured to provide a cycle comprising introducing a detergent solution into the washing machine basket in order to wet the contents of the washing machine basket, and to including this introducing step to wet the washing machine basket method of the item. Background technique [0004] In developed countries, and increasingly in developing countries, laundry is accomplished using washing machines. Broadly speaking, washing machines can be divided into two categories: horizontal axis washing machines, in which the drum rotates around a horizontal axis, and vertical axis washing machines, in which the drum rotates around a vertical axis. In most cases, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06F35/00
CPCD06F35/006
Inventor J·贝内特J·贝斯特S·乔普拉-甘迪希D·穆尔菲尔德A·J·帕里D·C·索利
Owner UNILEVER IP HLDG BV