Process by which at least one stripe of one material is incorporated in a layer of another material

• US 3,920,862 A
• Filed: 05/01/1972
• Issued: 11/18/1975
• Est. Priority Date: 05/01/1972
• Status: Expired due to Term

• Current Assignee: Donald J. Hughes, Rudolph E. Damschroder
• Original Assignee: Donald J. Hughes, Rudolph E. Damschroder
• Inventors: Damschroder, Rudolph E., Hughes, Donald J.
• Primary Examiner(s): Martin, William D.
• Assistant Examiner(s): Pianalto, Bernard D.
• Application Number:
  US05/248,916
• Time in Patent Office: 1,296 Days
• Field of Search: 117/235-240,34,43,44 427/127-132,261,407,420,411
• US Class Current: 427/131
• CPC Class Codes: B05C 5/007 Slide-hopper coaters, i.e. apparatus in which the liquid or other fluent material flows freely on an inclined surface before contacting the work
• CPC Class Codes: B05C 5/008 Slide-hopper curtain coaters
• CPC Class Codes: B05C 9/06 for applying two different liquids or other fluent materials, or the same liquid or other fluent material twice, to the same side of the work
• CPC Class Codes: B29C 48/05 Filamentary, e.g. strands
• CPC Class Codes: B29C 48/07 Flat, e.g. panels
• CPC Class Codes: B29C 48/08 flexible, e.g. films
• CPC Class Codes: B29C 48/12 Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
• CPC Class Codes: B29C 48/21 the layers being joined at their surfaces
• CPC Class Codes: B29C 48/307 specially adapted for bringing together components, e.g. melts within the die
• CPC Class Codes: B29C 48/914 cooling drums
• CPC Class Codes: G03C 1/74 Applying photosensitive compositions to the base; Drying processes therefor G03C1/496 takes precedence
• CPC Class Codes: Y10S 430/136 Coating process making radiation sensitive element

Abstract

A process in which a support is moved in a prescribed path and has at least one layer of a material continuously coated on a surface thereof. In a specific embodiment of the invention, several emulsion layers are simultaneously applied to a support. The laminar flow of each different layer forms with the other layers a composite flow in which the layers are in a predetermined order and superposed in contacting relation with each other. A flow of a recording material, such as a hydrophilic colloid having iron oxide particles dispersed therein, is introduced as a stripe within the laminar flow. The composite flow including the stripe is applied to the surface of the moving support and the stripe extends in the direction of movement of the support with the exposed surface of the outermost layer and of the stripe being generally coplanar.

Claims

1. A PROCESS FOR APPLYING TO AT LEAST ONE SURFACE OF A SUPPORT AT LEAST ONE STRIPE OF A FIRST COMPOSITION WITHIN A FLOW COMPRISING AT LEAST ONE SECOND AND COMPATIBLE COMPOSITION, WHICH COMPRISES THE STEPS OF:

MOVING THE SUPPORT IN A PRESCRIBED PATH, FORMING A FLOW OF SAID SECOND COMPOSITION DIRECTED TOWARS SAID SUPPORT, WHILE FORMING SAID FLOW, INTRODUCING AT LEAST ONE FLOW OF SAID FIRST COMPOSITION AS A STRIPE WITHIN SAID FLOW TO FORM A COMPOSITE FLOW, AND APPLYING CONTINUOUSLY SAID COMPOSITE FLOW TO THE ONE SURFACE OF SAID MOVING SUPPORT, WHEREBY SAID STRIPE EXTENDS IN THE DIRECTION OF MOVEMENT OF SAID SUPPORT AND THE EXPOSED SURFACE OF SAID FLOW AND STRIPE ARE GENERALLY COPLANAR.

2. A process in accordance with claim 1 wherein said applying step comprises continuously extruding said composite flow onto the one surface of said support.

3. A process in accordance with claim 1 wherein said applying step comprises continuously applying said composite flow as a free-falling curtain to said surface.

4. A process in accordance with claim 1 wherein said first composition comprises a hydrophilic colloid having a substance in suspension and said second composition comprises a hydrophilic colloid.

5. A process in accordance with claim 4 wherein said hydrophilic colloid comprises an aqueous gelatin solution and the substance in suspension comprises iron oxide particles.

6. A process in accordance with claim 1 wherein said first and second compositions are non-aqueous solutions.

7. A process in accordance with claim 6 wherein said first composition comprises cellulose nitrate and particles of iron oxide and said second composition comprises clear cellulose nitrate.

8. A process in accordance with claim 1 wherein said first composition and said second compositions are aqueous solutions.

9. A process in accordance with claim 8 wherein said first composition comprises a neocuproine solution and said second material comprises a silver chromate solution.

10. A PROCESS FOR APPLYING TO AT LEAST ONE SURFACE OF A GENERALLY TRNASPARENT, FLEXIBLE SUPPORT AT LEAST ONE STRIPE OF A FIRST COMPOSITION WITHIN AT LEAST THE OUTERMOST LAYER OF A NUMBER OF LAYERS OF DIFFERENT COMPOSITIONS SUPERPOSED IN CONTACTING RELATION, WHICH COMPRISES THE STEPS OF MOVING THE SUPPORT IN A PRESCRIBED PATH, FORMING A LAMINAR FLOW OF EACH DIFFERENT COMPOSITION INTO A COMPOSITE FLOW DIRECTED TOWARD SAID SUPPORT IN WHICH THE LAMINAR FLOWS ARE IN A PREDTERMINED ORDER AND SUPERPOSED IN CONTACTING RELATION WITH EACH OTHER, WHILE FORMING SAID COMPOSITE FLOW, INTRODUCING AT LEAST ONE FLOW OF SAID FIRST COMPOSITION AS A STRIPE WITHIN THE LAMINAR FLOW CONSISTUTING THE OUTERMOST LAYER RELATIVE TO SAID SUPPORT, APPLYING CONTINUOUSLY SAID COMPOSITE FLOW TO THE ONE SURFACE OF SAID MOVING SUPPORT;

WHEREBY SAID STRIPE EXTENDS IN THE DIRECTION OF MOVEMENT OF SAID SUPPORT AND THE EXPOSED SURFACE OF SAID OUTERMOST LAYER AND STRIPE ARE GENERALLY COPLANAR.

11. A process in accordance with claim 10 wherein said composite flow is applied to the one surface of said moving support as a free-falling vertical curtain.