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Method and apparatus for stain treatment

A stain, user interface technology applied in the field of near-infrared reflectance spectroscopy, which can solve the problem that the cleaning effect cannot always be achieved

Inactive Publication Date: 2018-04-17
UNILEVER NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This 'one size fits all' approach can mean that the best cleaning results are not always achieved

Method used

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  • Method and apparatus for stain treatment
  • Method and apparatus for stain treatment
  • Method and apparatus for stain treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Example 1 – Full Strength Stain

[0084]NIR spectral data were obtained for each of Stains 1-24 applied to cotton fabrics. The stains are given letter codes a to x respectively.

[0085] NIR spectra were collected over a wavelength range from a shortest wavelength of 1595 nm to a longest wavelength of 2397 nm.

[0086] Table 1 – Results for full strength stains

[0087]

[0088]

[0089] The resulting spectral data (ie, the acquired signature) is then compared to known values ​​using the methods described in more detail in the detailed description above.

[0090] During acquisition, the spectra appeared to be consistent except for e, k and x (there may be some outliers for their findings). This comparison was by visual inspection of the baseline-adjusted spectra performed on the instrument at the time of data collection, or on the PC via spectral matching, again as described in more detail above.

[0091] Figures 3 to 6 show the level of consistency within a...

Embodiment 2

[0100] Example 2 - Washed Stains

[0101] washed stains

[0102] This example concerns a stain (same stain mentioned above for Example 1) on a cotton test fabric. NIR measurements were performed on the stains as described above for Example 1, but this time the test fabrics were first washed with a commercial liquid. This example therefore attempts to identify washed stains using models built for fresh stains.

[0103] Again, the method of the invention is then carried out using the stain detection system 50 to identify washed stains.

[0104] Table 3 - Results of washed stains

[0105]

[0106]

[0107] As can be seen from Table 3 above, the spectral matching model (which was built for fresh stains) failed to identify washed stains.

[0108] A new model is then built based on the spectra obtained from the washed stains. The model is then tested for internal consistency. Mismatches of stain types are shown in bold in Table 4 below:

[0109] Table 4 - Mismatch of ...

Embodiment 3

[0114] Example 3 – Analysis by Stain Type

[0115] In this example, combined models (corresponding to both fresh and washed stain libraries) were combined and the application was then used for the instrument on fabric samples.

[0116] As in Examples 1 and 2 above, NIR spectral data was obtained for each of Stains 1-24 applied to cotton fabrics. The stains are given letter codes a to x respectively.

[0117] NIR spectra were collected over a wavelength range from a shortest wavelength of 1595 nm to a longest wavelength of 2397 nm.

[0118] In the table below, the results column indicates the stain type by its initial letter:

[0119] Enzyme = E

[0120] Fat = F

[0121] Particles = P

[0122] Bleach = B

[0123] Note that two measurements were made (two separate stains for each stain type), so the table below includes two results for each sample.

[0124] Table 5 - Comparison of results for concentrated and washed samples

[0125]

[0126]

[0127] Table 5 show...

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Abstract

A method for identifying a stain on a textile (10), the method comprising the steps of: performing near-infrared reflectance spectroscopy to obtain spectral data from the stain over a range of wavelengths ranging from a shortest wavelength to a longest wavelength, the shortest wavelength having a value of 1595nm or longer; accessing reference spectral data (33) of known stains; and comparing the spectral data of the stain to the reference spectral data of known stains to identify the stain.

Description

technical field [0001] The present invention relates to methods and systems for identifying stains on fabrics, and in particular to methods involving near infrared reflectance spectroscopy. Background technique [0002] There are many laundry products available for treating fabrics, and the actives in these products can vary depending on the specific fabric product being treated and the manner in which the treatment is to be applied. However, it is not common for the average home user of laundry products to understand or appreciate what each active will do and how to best remove a particular stain. [0003] Therefore, home laundry is rarely specific to the type of stains on fabric products. This "one size fits all" approach can mean that the best cleaning results are not always achieved. [0004] Products can contain specific treatments to work specifically on specific types of stains. For example, enzymes work well for cleaning body fluids, food based greases and oils, m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3563G01N21/359D06F39/00
CPCG01N21/3563G01N2201/0221G01N2201/129G01N21/359G01N33/367D06F34/18D06F34/28G01N21/93G01N21/95
Inventor D·J·库克K·S·李
Owner UNILEVER NV
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