US Patent No: 5,533,675
Number of patents in Portfolio can not be more than 2000
Apparatus for applying discrete coatings
Stats
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Jul 9, 1996
Issued date -
May 25, 1995
filing date -
08/450,234
serial no -
In Force
status
Importance
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Abstract
Apparatus and methods for producing intermittent, discrete patterns of coating material, such as hot melt adhesive, onto discrete substrates or substrate areas, where the patterns have sharp, square leading and trailing edges, as well as side edges. A slot nozzle die has elongated air slots along the slot extrusion opening. In the operation of the apparatus, the air flow is initiated from both air slots prior to the initiation of the hot melt flow. Also, the air flow is continued beyond that point in time, when the hot melt flow ceases. The delays between the operations of the air flow and the hot melt flow are on the order of micro seconds. Coating weights down to 1 gram per square meter at about 350 meters per minute substrate speed are provided. Alternatively, the lead and lag air start and stop times on each side of the coating material are different to control the exact disposition of the square cut-on and square cut-off coating edge on the substrate.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,247,581 Method of coating with film-forming solids | 32 | 1977 | |
| 4,553,701 Foam generating nozzle | 27 | 1982 | |
| 4,687,137 Continuous/intermittent adhesive dispensing apparatus | 84 | 1986 | |
| 4,735,169 Adhesive applicator assembly | 28 | 1986 | |
| 4,894,277 Application method and products that use a foamed hot melt adhesive | 23 | 1986 | |
| 4,753,819 Method for applying a moistureproof insulator coating on packaged circuit boards | 37 | 1986 | |
| 4,836,440 Sift-proof carton and method of manufacture | 16 | 1987 | |
| 4,815,660 Method and apparatus for spraying hot melt adhesive elongated fibers in spiral patterns by two or more side-by-side spray devices | 67 | 1987 | |
| 4,774,109 Method and apparatus for applying narrow, closely spaced beads of viscous liquid to a substrate | 47 | 1987 | |
| 4,983,109 Spray head attachment for metering gear head | 91 | 1988 | |
| 4,880,663 Method for applying a moistureproof insulative coating to printed circuit boards using triangular or dovetail shaped liquid films emitted from a flat-pattern nozzle | 33 | 1988 | |
| 4,874,451 Method of forming a disposable diaper with continuous/intermittent rows of adhesive | 49 | 1988 | |
| RE33481 Adhesive spray gun and nozzle attachment | 70 | 1989 | |
| 4,983,424 Method for forming a permanent foam coating by atomization onto a substrate | 12 | 1989 | |
| 5,016,812 Sift-proof carton and method and adhesive dispensing means for producing same | 20 | 1989 | |
| 4,957,783 Method and apparatus for dispensing droplets of molten thermoplastic adhesive | 34 | 1989 | |
| 5,354,378 Slot nozzle apparatus for applying coatings to bottles | 34 | 1992 | |
| 5,421,921 Segmented slot die for air spray of fibers | 37 | 1992 | |
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| 4,714,647 Melt-blown material with depth fiber size gradient | 127 | 1986 | |
| 4,818,464 Extrusion process using a central air jet | 240 | 1986 | |
| 4,720,252 Slotted melt-blown die head | 29 | 1986 | |
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| 5,145,689 Meltblowing die | 97 | 1990 | |
| 5,236,641 Metering meltblowing system | 49 | 1991 | |
| 5,269,670 Meltblowing die | 54 | 1992 | |
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| 4,476,165 Method of and apparatus for multi-layer viscous fluid deposition such as for the application of adhesives and the like | 57 | 1982 | |
| 4,746,545 Fluid coating and web-handling method and apparatus particularly adapted for low-tension and/or unevenly thick webs | 23 | 1985 | |
| 4,891,249 Method of and apparatus for somewhat-to-highly viscous fluid spraying for fiber or filament generation, controlled droplet generation, and combinations of fiber and droplet generation, intermittent and continuous, and for air-controlling spray deposition | 116 | 1988 | |
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| 4,948,053 Paint spray nozzle | 15 | 1989 | |
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| 4,860,514 Single ply roof membrane securing system and method of making and using same | 29 | 1988 | |
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| 4,900,593 Process and device for applying a free-flowing reaction mixture | 12 | 1988 | |
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| 5,012,980 Linear-spraying device | 14 | 1986 | |
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| 4,844,342 Spray gun control circuit | 21 | 1987 | |
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| 5,080,569 Primary air system for a melt blown die apparatus | 32 | 1990 | |
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| 4,377,985 System for producing a liquid spray curtain | 10 | 1981 | |
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| 4,984,949 Continuous bookbinding process using a moisture curable polyurethane adhesive | 24 | 1989 | |
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| 4,906,492 Process for the production of a heat-sealable textile product for use in garments | 24 | 1986 | |
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| 5,000,112 Apparatus for the surface coating of glue | 34 | 1989 | |
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| 4,408,562 Apparatus for applying a coating to a moving surface | 26 | 1981 | |
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| 5,286,182 Spinning nozzle for preparing a fiber precursor | 9 | 1992 | |
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| 4,478,631 Glass feeder heat baffle | 12 | 1983 | |
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| 4,711,683 Method and apparatus for making elastic diapers | 61 | 1987 | |
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| 4,954,059 Sealant bead profile control | 10 | 1988 | |
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| 4,961,536 Pneumatic liquid spraying device | 12 | 1989 | |
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| 5,209,410 Electrostatic dispensing nozzle assembly | 24 | 1992 | |
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| 4,822,640 Coater | 22 | 1984 | |
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| 4,750,956 Foam binding | 18 | 1986 | |
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| 5,260,003 Method and device for manufacturing ultrafine fibres from thermoplastic polymers | 56 | 1992 | |