EP0378731A1 - Firnisofen - Google Patents

Firnisofen Download PDF

Info

Publication number
EP0378731A1
EP0378731A1 EP89100977A EP89100977A EP0378731A1 EP 0378731 A1 EP0378731 A1 EP 0378731A1 EP 89100977 A EP89100977 A EP 89100977A EP 89100977 A EP89100977 A EP 89100977A EP 0378731 A1 EP0378731 A1 EP 0378731A1
Authority
EP
European Patent Office
Prior art keywords
furnace
workpiece
varnishing
ultrared
painting
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.)
Granted
Application number
EP89100977A
Other languages
English (en)
French (fr)
Other versions
EP0378731B1 (de
Inventor
Ching-Shun Wu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WU CHING SHUN
Original Assignee
WU CHING SHUN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WU CHING SHUN filed Critical WU CHING SHUN
Priority to AT89100977T priority Critical patent/ATE84362T1/de
Priority to EP89100977A priority patent/EP0378731B1/de
Priority to DE8989100977T priority patent/DE68904303D1/de
Priority to AU41163/89A priority patent/AU600623B1/en
Publication of EP0378731A1 publication Critical patent/EP0378731A1/de
Application granted granted Critical
Publication of EP0378731B1 publication Critical patent/EP0378731B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements

Definitions

  • This invention relates to a varnishing furnace which utilizes specially arranged near-ultrared radiation bulbs to bake a workpiece.
  • the varnishing furnace on the market generally falls into three categories: the electric varnishing furnace, the gas varnishing furnace, and the medium- or far-ultrared varnishing furnace.
  • the first two kinds of varnishing furnaces are seldom used due to their poor productivity, insufficient safety and high cost.
  • the medium or far-ultrared furnace which is provided with medium- or far-ultrared radiation bulbs at one or both sides, becomes the most commonly used furnace for baking.
  • the medium- or far-ultrared ray is rather long is wavelength, the penetration capability thereof is poor. Further, it requires a long period of time to raise the temperature and so it is impossible for them to dry the painting on the workpiece in a short period of time, thereby causing the following drawbacks:
  • the varnishing furnace 1 is provided with three rows of near-ultrared radiation bulbs 2 on one side, both sides, or both sides and bottom thereof. There is a distance betweeen every two rows of near-ultrared radiation bulbs 2. Then, the space enclosed by or just in front of the near-ultrared radiation bulbs 2 forms a high temperature region 3 while the space between two rows of near-ultrared radiation bulbs 2 builds up a low temperature region 4. Looking now at FIG. 2, when a workpiece 5 enters into the varnishing furnace 1, the workpiece 5 is first preheated at a low temperature region 4 and then passed through a high temperature region 3.
  • the temperature of the workpiece 5 will produce heat due to the vigorous oscillation between the parties thereof and this will decrease the temperature difference between the upper and lower layers of painting on the workpiece 5.
  • the time required for the solvent in the upper and lower layers of painting on the workpiece 5 to vaporize will be nearly the same thereby decreasing the occurrence of so-called pin hole and baking dead points.
  • the time difference between the solidifying of the the upper and lower layers of painting on the workpiece 5 will be diminished, avoiding the occurrence of so-­called wrinkles.
  • the workpiece 5 passes through a low temperature region 4 where the workpiece 5 is only subject to indirect heat through the air.
  • the temperature at the low temperature region 4 will be lower than that at the high temperature region 3.
  • the low temperature region 4 is designed so that the temperature thereat is lower than that required for solidifying the painting on the workpiece 5. Meanwhile, the temperature of the workpiece 5 is gradually increased eliminating the time difference for the upper and lower layers of painting on the workpiece 5 to vaporize or solidify. Lastly, the workpiece 5 passes a number of high and low temperature regions alternatively diposed for baking.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Paints Or Removers (AREA)
  • Baking, Grill, Roasting (AREA)
  • Electric Stoves And Ranges (AREA)
EP89100977A 1989-01-20 1989-01-20 Firnisofen Expired - Lifetime EP0378731B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT89100977T ATE84362T1 (de) 1989-01-20 1989-01-20 Firnisofen.
EP89100977A EP0378731B1 (de) 1989-01-20 1989-01-20 Firnisofen
DE8989100977T DE68904303D1 (de) 1989-01-20 1989-01-20 Firnisofen.
AU41163/89A AU600623B1 (en) 1989-01-20 1989-09-08 Varnishing furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89100977A EP0378731B1 (de) 1989-01-20 1989-01-20 Firnisofen

Publications (2)

Publication Number Publication Date
EP0378731A1 true EP0378731A1 (de) 1990-07-25
EP0378731B1 EP0378731B1 (de) 1993-01-07

Family

ID=8200883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100977A Expired - Lifetime EP0378731B1 (de) 1989-01-20 1989-01-20 Firnisofen

Country Status (4)

Country Link
EP (1) EP0378731B1 (de)
AT (1) ATE84362T1 (de)
AU (1) AU600623B1 (de)
DE (1) DE68904303D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002070973A1 (de) * 2001-03-01 2002-09-12 Adphos Verfahren zum erzeugen einer beschichtung auf einem quasi-endlos geförderten materialband

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498878A (en) * 1944-05-02 1950-02-28 Trumbull Electric Mfg Co Infrared baking oven
US2660723A (en) * 1951-03-06 1953-12-01 Delamarre Emile Jules Apparatus for the stabilization of ivory
DE1097369B (de) * 1954-01-02 1961-01-12 Daimler Benz Ag Verfahren zum Steuern der Beheizung von Tunneltrocknern
FR1303765A (fr) * 1961-10-13 1962-09-14 Portique de séchage par rayonnement infra-rouge pour véhicules automobiles ou autres
GB2096294A (en) * 1981-02-25 1982-10-13 Svecia Silkscreen Maskiner Ab Drier
EP0095717A1 (de) * 1982-05-27 1983-12-07 Ernest Picot Heiztunnel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498878A (en) * 1944-05-02 1950-02-28 Trumbull Electric Mfg Co Infrared baking oven
US2660723A (en) * 1951-03-06 1953-12-01 Delamarre Emile Jules Apparatus for the stabilization of ivory
DE1097369B (de) * 1954-01-02 1961-01-12 Daimler Benz Ag Verfahren zum Steuern der Beheizung von Tunneltrocknern
FR1303765A (fr) * 1961-10-13 1962-09-14 Portique de séchage par rayonnement infra-rouge pour véhicules automobiles ou autres
GB2096294A (en) * 1981-02-25 1982-10-13 Svecia Silkscreen Maskiner Ab Drier
EP0095717A1 (de) * 1982-05-27 1983-12-07 Ernest Picot Heiztunnel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002070973A1 (de) * 2001-03-01 2002-09-12 Adphos Verfahren zum erzeugen einer beschichtung auf einem quasi-endlos geförderten materialband

Also Published As

Publication number Publication date
DE68904303D1 (de) 1993-02-18
AU600623B1 (en) 1990-08-16
EP0378731B1 (de) 1993-01-07
ATE84362T1 (de) 1993-01-15

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