GB957743A - Method and apparatus for applying thin coatings to web supports - Google Patents
Method and apparatus for applying thin coatings to web supportsInfo
- Publication number
- GB957743A GB957743A GB2932861A GB2932861A GB957743A GB 957743 A GB957743 A GB 957743A GB 2932861 A GB2932861 A GB 2932861A GB 2932861 A GB2932861 A GB 2932861A GB 957743 A GB957743 A GB 957743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- web
- chamber
- bead
- applicator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000576 coating method Methods 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- 239000007788 liquid Substances 0.000 abstract 9
- 239000011248 coating agent Substances 0.000 abstract 3
- 239000011324 bead Substances 0.000 abstract 2
- 108010010803 Gelatin Proteins 0.000 abstract 1
- 239000000084 colloidal system Substances 0.000 abstract 1
- 229920000159 gelatin Polymers 0.000 abstract 1
- 239000008273 gelatin Substances 0.000 abstract 1
- 235000019322 gelatine Nutrition 0.000 abstract 1
- 235000011852 gelatine desserts Nutrition 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0254—Coating heads with slot-shaped outlet
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
957,743. Coating webs. ILFORD Ltd. Oct. 25, 1962 [Aug. 14, 1961 ], No. 29328/61. Heading D1L. In a method of applying a thin layer of coating liquid to a travelling web 1 (e.g. a gelatin or other colloid material to a film base), the liquid is applied to the web at a point where the web has a vertical component of motion and a chamber 10 of the liquid applicator has a vertical height of between 12 and 40 mms. so that a significant static pressure is created between the upper and lower regions of the bead of liquid confined between the chamber 10 and the web 1. In the forms shown liquid is supplied to the chamber 10 through a slot 9 formed between jaws 7, 8 of the applicator; if the chamber is deep (measured from web 1 to wall 11) liquid may be fed to the chamber by means other than the slot 9. To prevent air bubbles remaining in the bead a member 14 (see Fig. 3) may be placed in chamber 10 to cause controlled circulation of the liquid therein. In addition liquid and bubbles may be continuously or intermittently withdrawn from the space between the member 14 and wall 11. The dimensions of the device depend upon the viscosity, surface tension and density of the liquid and on the required coating weight and the speed of the web.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2932861A GB957743A (en) | 1961-08-14 | 1961-08-14 | Method and apparatus for applying thin coatings to web supports |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2932861A GB957743A (en) | 1961-08-14 | 1961-08-14 | Method and apparatus for applying thin coatings to web supports |
Publications (1)
Publication Number | Publication Date |
---|---|
GB957743A true GB957743A (en) | 1964-05-13 |
Family
ID=10289817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2932861A Expired GB957743A (en) | 1961-08-14 | 1961-08-14 | Method and apparatus for applying thin coatings to web supports |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB957743A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0021741A1 (en) * | 1979-06-13 | 1981-01-07 | Konica Corporation | A method and apparatus for coating substrates |
GB2120132A (en) * | 1982-05-19 | 1983-11-30 | Konishiroku Photo Ind | Extrusion coating apparatus |
-
1961
- 1961-08-14 GB GB2932861A patent/GB957743A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0021741A1 (en) * | 1979-06-13 | 1981-01-07 | Konica Corporation | A method and apparatus for coating substrates |
GB2120132A (en) * | 1982-05-19 | 1983-11-30 | Konishiroku Photo Ind | Extrusion coating apparatus |
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