US4831264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for measuring the concentration of adhesive on a coating layer surface
Assignee: Nippon Paper Industries Co Ltd
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Filing: 1987-07-31
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Granted: 1989-05-16
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Expires: 2007-07-31
Abstract
Abstract A method for measuring the concentration of adhesive on the surface of a coating layer which has the steps of irradiating the surface of the coating layer with an ultraviolet ray of the highest peak absorption wavelength of the adhesive, ultraviolet ray of shorter wavelength and ultraviolet ray of longer wavelength, photoelectrically converting the reflected rays and further comparing to calculate them. Thus, this method can be used to measure the concentration of adhesive on the surface of a coating layer and the flat surface distribution of the adhesive by fundamentally measuring with ultraviolet rays. The method is of high reliability despite the presence of gloss or the like.
Inventors
- 👤 Hideki Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:01
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/33; G01J; G01J1/00; G01J1/10; G01J1/16; G01J1/1626; G01N21/84; G01N21/8422; G01N2021/8427; G01N21/314; G01N21/47; G01N21/4738
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
89 words
A method for measuring the concentration of adhesive on the surface of a pigment coating layer coated on a support comprising the steps of: irradiating the surface of the coating layer with an ultraviolet ray of the highest peak absorption wavelength of the adhesive, an ultraviolet ray of shorter wavelength and an ultraviolet ray of longer wavelength, and photoelectrically determining the absorbance of each of said rays by the surface of the pigment coating layer and calculating a corrected absorbance from which the concentration of adhesive can be determined.
Claim 2
Independent Claim
89 words
A method for measuring the concentration of adhesive on the surface of a pigment coating layer coated on a support comprising the steps of: irradiating the surface of the coating layer with an ultraviolet ray of the highest peak absorption wavelength of the adhesive, an ultraviolet ray of shorter wavelength and an ultraviolet ray of longer wavelength, and photoelectrically determining the absorbance of each of said rays by the surface of the pigment coating layer and calculating a corrected absorbance from which the concentration of adhesive can be determined.
Claim 3
Dependent Claim
31 words
The method according to claim 1, wherein said pigment coating layer adhesive comprises a stryrene-butadiene latex, the highest peak absorption wavelength is 260 nm and the shorter wavelength is 235 nm.
Claim 4
Dependent Claim
13 words
The method according to claim 2, wherein the longer wavelength is 285 nm.
Claim 5
Dependent Claim
11 words
The method according to claim 1, wherein said support is paper.
Claim 6
Dependent Claim
21 words
The method according to claim 1, wherein said support is selected from the group consisting of synthetic resin, metal and glass.
Claim 7
Dependent Claim
24 words
The method according to claim 1, wherein the irradiating spot of the ultraviolet ray measures from 0.01 mm to 2 mm laterally and longitudinally.
Claim 8
Dependent Claim
34 words
The method according to claim 1, wherein the pigment concentration of adhesive in the coating layer surface is measured by scanning the irradiating spot of the ultraviolet ray on the pigment coating layer surface.
Claim 9
Independent Claim
162 words
A method for measuring the concentration of adhesive on the surface of a pigment coating layer comprising the steps of: irradiating the surface of the pigment coating layer with an ultraviolet ray of the highest peak absorption wavelength of the adhesive, an ultraviolet ray of shorter wavelength and an ultraviolet ray of longer wavelength to obtain the absorbance of the ultraviolet ray of each wavelength. obtaining a corrected absorbance (S C ) of the ultraviolet ray of the highest peak absorption wavelength from the following equation: S.sub.C =S.sub.p -((S.sub.L -S.sub.S)/2+S.sub.S) where S C is the corrected absorbance, S p is the absorbance of the ultraviolet ray of the highest peak absorption wavelength, S S is the absorbance of the ultraviolet ray of shorter wavelength, S L is the absorbance of the ultraviolet ray of longer wavelength, and comparing the corrected absorbance with previously determined values for corrected absorbance correlated with pigment coating layer adhesive concentrations to determine the concentration of the adhesive.
Claim 10
Independent Claim
162 words
A method for measuring the concentration of adhesive on the surface of a pigment coating layer comprising the steps of: irradiating the surface of the pigment coating layer with an ultraviolet ray of the highest peak absorption wavelength of the adhesive, an ultraviolet ray of shorter wavelength and an ultraviolet ray of longer wavelength to obtain the absorbance of the ultraviolet ray of each wavelength. obtaining a corrected absorbance (S C ) of the ultraviolet ray of the highest peak absorption wavelength from the following equation: S.sub.C =S.sub.p -((S.sub.L -S.sub.S)/2+S.sub.S) where S C is the corrected absorbance, S p is the absorbance of the ultraviolet ray of the highest peak absorption wavelength, S S is the absorbance of the ultraviolet ray of shorter wavelength, S L is the absorbance of the ultraviolet ray of longer wavelength, and comparing the corrected absorbance with previously determined values for corrected absorbance correlated with pigment coating layer adhesive concentrations to determine the concentration of the adhesive.
Claim 11
Independent Claim
165 words
A method for measuring the concentration of adhesive on the surface of a pigment coating layer comprising the steps of: irradiating the surface of the pigment coating layer with an ultraviolet ray of the highest peak absorption wavelength (P) of the adhesive, an ultraviolet ray of shorter wavelength (S) and an ultraviolet ray of longer wavelength (L) to obtain the absorbance of the ultraviolet ray of each wavelength, obtaining a corrected absorbance (S C ) of the ultraviolet ray of the highest peak absorption wavelength from the following equation: S.sub.C =S.sub.p -((S.sub.L -S.sub.S)/(L-S)/(P-S))+S.sub.S) where S C is the corrected absorbance, S p is the absorbance of the ultraviolet ray of the highest peak absorption wavelength, S S is the absorbance of the ultraviolet ray of shorter wavelength, S L is the absorbance of the ultraviolet ray of longer wavelength, and comparing the corrected absorbance with previously determined values for corrected absorbance correlated with pigment coating layer adhesive concentrations to determine the concentration of the adhesive.
Claim 12
Independent Claim
165 words
A method for measuring the concentration of adhesive on the surface of a pigment coating layer comprising the steps of: irradiating the surface of the pigment coating layer with an ultraviolet ray of the highest peak absorption wavelength (P) of the adhesive, an ultraviolet ray of shorter wavelength (S) and an ultraviolet ray of longer wavelength (L) to obtain the absorbance of the ultraviolet ray of each wavelength, obtaining a corrected absorbance (S C ) of the ultraviolet ray of the highest peak absorption wavelength from the following equation: S.sub.C =S.sub.p -((S.sub.L -S.sub.S)/(L-S)/(P-S))+S.sub.S) where S C is the corrected absorbance, S p is the absorbance of the ultraviolet ray of the highest peak absorption wavelength, S S is the absorbance of the ultraviolet ray of shorter wavelength, S L is the absorbance of the ultraviolet ray of longer wavelength, and comparing the corrected absorbance with previously determined values for corrected absorbance correlated with pigment coating layer adhesive concentrations to determine the concentration of the adhesive.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |