EP0096453A2
Expired / Lapsed
EP
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Method of and apparatus for multi-layer viscous fluid deposition such as for the application of adhesives and the like
Assignee: Acumeter Laboratories Inc
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Filing: 1983-03-04
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Granted: —
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Expires: 2003-03-04
Abstract
Abstract This disclosure is concerned with independent fluid dispensing by a multi-slot cavity nozzle with opposing zig-zag fluid path baffle-diversion operation, generating a pair of adjacent line fluid depositions upon a web moving past the nozzle, and enabling the separate but simultaneous use of adhesives and other fluid media of different characteristics and in widely flexible multi-layer coating patterns including superposed, side-by-side, spaced and other multi-layer patterns.
Inventors
- 👤 Frederic S. Mcintyre
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 20:45
CPC Classifications
B; B05; B05C; B05C5/00; B05C5/02; B05C5/0254; B05C5/027; B05C9/00; B05C9/06; B05D; B05D1/00; B05D1/26; B05D1/265; B05D1/34; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/16; B29C48/18; B29C48/21; B29C48/25; B29C48/36; B29C48/49; B05D5/00; B05D5/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
186 words
A method of multi-layer viscous fluid deposition upon a moving web, that comprises, pumping fluid synchronously with the web speed transversely into intermediate inlet regions on one side of each of a pair of substantially parallel opposed narrow longitudinal slot cavities to expand the fluid longitudinally along each slot without substantial transverse expansion; projecting the longitudinally expanded fluid in the pair of slot cavities transversely out- . wardly toward one another and against opposite sides of baffle means to divert the fluid and exit the same through a pair of adjacent openings each displaced on the opposite side of its slot cavity from the inlet region so that the fluid on opposite sides of the baffle is directed in zig-zag paths towards one another and through the respective said openings; and varying the width of the said openings to increase or decrease the velocity of the exiting fluid to adjust for the shearing action by the web for fluids of widely different viscosities in order to maintain a continuous and uniform deposition without discontinuity, to exit at substantially the same time from both of said openings.
Claim 2
Independent Claim
186 words
A method of multi-layer viscous fluid deposition upon a moving web, that comprises, pumping fluid synchronously with the web speed transversely into intermediate inlet regions on one side of each of a pair of substantially parallel opposed narrow longitudinal slot cavities to expand the fluid longitudinally along each slot without substantial transverse expansion; projecting the longitudinally expanded fluid in the pair of slot cavities transversely out- . wardly toward one another and against opposite sides of baffle means to divert the fluid and exit the same through a pair of adjacent openings each displaced on the opposite side of its slot cavity from the inlet region so that the fluid on opposite sides of the baffle is directed in zig-zag paths towards one another and through the respective said openings; and varying the width of the said openings to increase or decrease the velocity of the exiting fluid to adjust for the shearing action by the web for fluids of widely different viscosities in order to maintain a continuous and uniform deposition without discontinuity, to exit at substantially the same time from both of said openings.
Claim 3
Dependent Claim
21 words
A method as claimed in claim 1 and in which fluid materials of different properties are applied to the slot cavities.
Claim 4
Dependent Claim
20 words
A method as claimed in claim 1 and in which the fluid coatings of the pair of openings are superposed.
Claim 5
Dependent Claim
19 words
A method as claimed in claim 1 and in which the fluid coatings from said openings are disposed side-by-side.
Claim 6
Dependent Claim
18 words
A method as claimed in claim 1 and in which the fluid layers are deposited in different widths.
Claim 7
Dependent Claim
188 words
A multi-layer fluid nozzle applicator for depositing viscous adhesives and the like upon a web moving past the nozzle, having, in combination, a pair of opposing transversely spaced longitudinal slot cavities of narrow width; inlet means connected intermediate each cavity for injecting fluid transversely into the slot cavity on one side thereof to enable longitudinal expansion thereof along the slot cavity with negligible transverse expansion; pump means connected to the inlet means for providing continuous flow of materials synchronously with the web speed; shim means provided with openings aligned with each slot cavity and of predetermined thickness; baffle means abutting the shim means for diverting the fluid expanded in each slot cavity and transversely passed through the shim means opening on the other side of the slot cavity from the inlet means, to provide a pair of adjacent parallel nozzle openings on each side of the baffle means; and means for enabling changing of the said predetermined thickness of the shim means to increase or decrease the velocity of fluid exiting from said nozzle openings for depositing relatively low and high viscosity fluids as desired on the web.
Claim 8
Dependent Claim
188 words
A multi-layer fluid nozzle applicator for depositing viscous adhesives and the like upon a web moving past the nozzle, having, in combination, a pair of opposing transversely spaced longitudinal slot cavities of narrow width; inlet means connected intermediate each cavity for injecting fluid transversely into the slot cavity on one side thereof to enable longitudinal expansion thereof along the slot cavity with negligible transverse expansion; pump means connected to the inlet means for providing continuous flow of materials synchronously with the web speed; shim means provided with openings aligned with each slot cavity and of predetermined thickness; baffle means abutting the shim means for diverting the fluid expanded in each slot cavity and transversely passed through the shim means opening on the other side of the slot cavity from the inlet means, to provide a pair of adjacent parallel nozzle openings on each side of the baffle means; and means for enabling changing of the said predetermined thickness of the shim means to increase or decrease the velocity of fluid exiting from said nozzle openings for depositing relatively low and high viscosity fluids as desired on the web.
Claim 9
Dependent Claim
34 words
A multi-layer fluid nozzle applicator as claimed in claim 6 and in which the pattern of depositions is controlled by relative size of the openings in the shim means and the slot cavity openings.
Claim 10
Dependent Claim
30 words
A multi-layer fluid nozzle applicator as claimed in claim 6 and in which the pump means generates intermittent flow in one of the slot cavities and continuous flow in another.
Claim 11
Dependent Claim
29 words
A multi-layer fluid nozzle applicator as claimed in claim 6 and in which the fluids deposited through the said pair of adjacent nozzle openings are superimposed upon the web.
Claim 12
Dependent Claim
33 words
A multi-layer fluid nozzle applicator as claimed in claim 6 and in which the shim means are adjusted to deposit the fluid through the said pair of nozzle openings side-by-side upon the web.
Claim 13
Dependent Claim
27 words
A multi-layer fluid nozzle applicator as claimed in claim 6 and in which the layers deposited through said pair of nozzle openings are of different stripe width.
Claim 14
Dependent Claim
22 words
A multi-layer fluid nozzle applicator as claimed in claim 6 and in which each slot cavity comprises a plurality of in-line cavities.
References Cited (Backward Citations)
No citation records indexed.
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