Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D83/00—Containers or packages with special means for dispensing contents
  • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
  • B65D83/75—Aerosol containers not provided for in groups B65D83/16 - B65D83/74
  • B65D83/752—Aerosol containers not provided for in groups B65D83/16 - B65D83/74 characterised by the use of specific products or propellants
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
  • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
  • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
  • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
  • B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material

Definitions

• the invention relates to a spray can containing a paint or a paint preparation material and a blowing agent, in particular a propellant gas from a propane / butane mixture, the generates a pressure of 4.5 bar to 6 bar in the spray can, whereby the paint or the paint preparation material Opening a valve can be sprayed.
• a blowing agent in particular a propellant gas from a propane / butane mixture
• Such spray cans are e.g. from DE 28 19 635 C2, DE 38 08 405 C1 or DE 195 11 771 A1 for a wide range of applications and for the most diverse to be sprayed Materials are known and have been special for many years for the household and the DIY sector in millions Number of pieces sold.
• Paint preparation materials in spray cans are common Propane / butane germ propellant with one pressure of about 4.7 bar (at room temperature) as used in the DE 28 19 635 C2 (corresponds to the preamble of claim 1) is described.
• Spray cans for paints and paint preparation materials are mainly in the do-it-yourself area for car repair painting used.
• the industrial serial painting is followed by the coating usually by compressed air, airless, air-assisted Airless or electrostatic atomization (see E. Springmann, "Paint spray coating technology today” in the Trade magazine “Farben + Lacke”).
• Low pressure paint sprayers or high pressure paint sprayers used in the craft or industrial auto repair paint jobs.
• the high-pressure spraying is that most common painting processes. Even if the Quality of the surface in the series painting in the Automotive industry or for refinishing meets the desired requirements, it must be borne in mind that this painting process has the biggest "overspray" and only achieved an order efficiency of around 30% to 50%.
• Conventional spray cans are used because of their small amount of paint and the very uneven paint application from professional users such as car repair shops or in industrial serial painting only in very little Scope used, but mainly in the do-it-yourself area.
• the object of the present invention is therefore a spray can of the type mentioned so that both the Order efficiency and the working speed of the Spray can, as well as the result of the paint flow and paint level are comparable to that of an HVLP spray gun.
• This solution creates a spray can that due to higher application rates for use in professional area, especially for Processing of paints and paint preparation materials for professional car painters.
• the application efficiency of the spray can according to the invention comparable or better than that of a modern HVLP spray gun.
• the paint material in A wide-angle atomization becomes a working speed enables the working speed of a Spray gun comes close.
• the distribution of the Paint particles due to the increased pressure in connection with the Wide jet atomization so fine that flow and paint level comparable results as when using a spray gun bring.
• the pressure in the spray can is 5.0 to 5.5 bar.
• the application rate of the paint material can be applied continuously advantageously be 18 g to 28 g per 10 seconds.
• the pressure in the spray can at one particularly advantageous embodiment of the invention, 5.2 bar can the application rate of the varnish is usually about 10 g within 10 seconds with conventional spray cans that have a pressure of 3.5 to 3.6 bar, to about 20 g Increase to 24 g in the same time unit.
• the spray can according to the invention no compressed air is used while using spray guns the material to be sprayed under a pneumatic pressure exposed that creates a mist of paint and above causes an air rebound in front of the workpiece, so that the incoming paint particles in part be thrown back. This effect is called "overspray" designated.
• the desired pressure increase compared to conventional spray cans can be in an embodiment of the invention Achieve the spray can by using the known propane-butane mixture, that a pressure of about 4.2 bar at 20 ° C generates an additional portion of propane up to an amount is mixed in, at which the pressure in the spray can desired value reached.
• a pressure of about 5.2 bar leaves can be achieved according to the invention in that the propellant gas mixture 72% from the known propane-butane mixture with a Pressure of 4.2 bar at 20 ° C and 28% propane with a Pressure of 9.1 bar at 20 ° C.
• the increased paint application rate can be sprayed with a wide jet with homogeneous distribution of the paint particles in one of the Spray gun modeled on elliptical spray pattern atomize much more evenly than the conventional one Round nozzle. This ensures optimal processing of the Enables paint materials.
• Known spray cans usually use a propellant gas Propane-butane mixture, in which the ratio of propane to Butane varies from 50:50 to 65% propane and 35% butane.
• the Pressure of the propane / butane propellant mixture is from Manufacturer always exactly to the desired value of 4.2 bar set. This leads together with that to be sprayed Paint material to a pressure in the spray can from 3.5 to 3.6 bar.
• the propellant gas mixture used in the spray can according to the invention consists of 72% of that described in Example 1 Propane / butane mixture at a pressure of 4.2 bar. 28% of The propellant gas mixture is pure propane with a pressure of 9.1 bar. Overall, this results in a spray can pressure of 5.2 bar.
• paint materials such as basecoats, clearcoats, topcoats, and spray fillers, Corrosion protection agents, plastic adhesion promoters, etc. used.
• the main advantages of using the invention Spray can applicable new spray technology compared to the Spraying techniques do not result in material savings remaining quantities, only small spray mist, a high Order efficiency and non-existent pot lives, in a cost reduction due to lower energy costs (Air consumption) and significantly lower disposal costs for paint materials as well as in handling and saving time, there are no set-up times compared to the spray gun technology are necessary, no cleaning of the spray gun necessary is, it has a lower weight and also Finished paint mixtures can be used, so that no Mixing process is more required.

Landscapes

• Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Application Of Or Painting With Fluid Materials (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Nozzles (AREA)
• Manufacturing Of Micro-Capsules (AREA)
• Road Repair (AREA)
• Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
• Spray Control Apparatus (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7804824

Family Applications (1)

Country Status (12)

Cited By (1)

Families Citing this family (6)

Family Cites Families (19)

• 1996
  • 1996-09-06 DE DE19636221A patent/DE19636221C2/de not_active Expired - Lifetime
  • 1996-10-10 DE DE29617635U patent/DE29617635U1/de not_active Expired - Lifetime
• 1997
  • 1997-03-17 US US08/819,233 patent/US5957341A/en not_active Expired - Fee Related
  • 1997-09-05 PL PL97332142A patent/PL332142A1/xx unknown
  • 1997-09-05 WO PCT/EP1997/004818 patent/WO1998009887A1/de active IP Right Grant
  • 1997-09-05 ES ES97941980T patent/ES2191196T3/es not_active Expired - Lifetime
  • 1997-09-05 AU AU43823/97A patent/AU738425B2/en not_active Ceased
  • 1997-09-05 CZ CZ0074799A patent/CZ296725B6/cs not_active IP Right Cessation
  • 1997-09-05 CA CA002264696A patent/CA2264696C/en not_active Expired - Fee Related
  • 1997-09-05 EP EP97941980A patent/EP0925236B1/de not_active Expired - Lifetime
  • 1997-09-05 AT AT97941980T patent/ATE231094T1/de not_active IP Right Cessation
  • 1997-09-05 DE DE59709163T patent/DE59709163D1/de not_active Ceased
  • 1997-09-05 TR TR1999/00502T patent/TR199900502T2/xx unknown
• 1999
  • 1999-03-04 NO NO19991075A patent/NO320865B1/no not_active IP Right Cessation

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