WO2011032248A1 - Curved oven with a progressive thermal profile for treating lithographic matrices or offset plates - Google Patents
Curved oven with a progressive thermal profile for treating lithographic matrices or offset plates Download PDFInfo
- Publication number
- WO2011032248A1 WO2011032248A1 PCT/BR2010/000310 BR2010000310W WO2011032248A1 WO 2011032248 A1 WO2011032248 A1 WO 2011032248A1 BR 2010000310 W BR2010000310 W BR 2010000310W WO 2011032248 A1 WO2011032248 A1 WO 2011032248A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lithographic
- thermal
- offset plate
- matrices
- heated
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/40—Treatment after imagewise removal, e.g. baking
Definitions
- the present invention relates to a greenhouse for the heat treatment of offset plates also called "burn plate",
- Process 10 may be restricted or continuous enveloping.
- the heat treatment or burning process is carried out by introducing the offset plate in a furnace or oven at a constant temperature and a certain residence time.
- Parameters set by the sheet metal manufacturer in order to harden / crystallize the offset sheet and extend its life, especially in long-run printing, increasing its hardness, chemical resistance and scratches on the surface of the sheet.
- the disadvantage of the ovens used in said process is that inside the oven, the heating of the offset plate is by convection 20 through air, previously heated by electric resistors or infrared radiation plates, being very difficult to achieve temperature homogeneity throughout the offset plate surface and consequently a homogeneity in the crystallization or hardening of the offset plate layer, compromising the graphic printer's expected durability across the offset plate surface in a homogeneous manner.
- the surface contact thermal transmission has the advantage that it is easier to manage the heat input quickly and evenly on the offset plate surface. Because it is less than 0.5 mm thick and aluminum with a high thermal absorption power, the heating is almost instantaneous and only needs to heat the surface of the greenhouse that will be in contact with the offset plate.
- the aforementioned system has the offset and aluminum plate, with minimum dimensions similar to 30 cm x 40 cm and maximum 84 cm x 110 cm with thicknesses from 0.12 mm to 0.40 mm and heated at firing temperature, generally in the range of 220 ° C / 260 ° C.
- the contact of the plate with a flat surface does not achieve full homogeneity in all its area, and, due to its expansion, it produces deformations in the form of ripples, craters and roughness on the surface of the offset plate, and may be permanent. , making uniform heating impossible and thus losing the offset plate.
- FIGURES 1A and 1B The primary purpose of which is a curved surface (which may be cylindrical) heated inside by electrical or infrared resistors.
- FIGURE 2 We see the same system already described, with the variant that: a cylinder replaces the curved shape and the thermal blanket is a wrapping belt, having the same effect as described, but in continuous input / output form and applying mats (not described in the drawing) making the system automatic.
- a second internal belt web can be adapted to all mechanisms already described, between the plate and the heated surface by sandwiching the offset plate in order to facilitate its extraction.
- the same device is also suitable for the heat treatment of violet photopolymer plates, which in the developing process require pre-heat.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Resistance Heating (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The present invention application relates to an oven for the thermal treatment of lithographic matrices that is heated by electric resistance, has a curved surface and a thermal envelope with an enveloping tension applied to the offset plate, either in a limited or a continuous manner.
Description
ESTUFA CURVA DE CONFORMIDADE TÉRMICA PROGRESSIVA, PARA O TRATAMENMTO DE MATRIZES LITOGRÁFICAS TAMBÉM DENOMINADAS CHAPAS OFFSET" PROGRESSIVE THERMAL COMPLIANCE GREENHOUSE CURVE FOR TREATMENT OF LITHOGRAPHIC MATTERS ALSO CALLED OFFSET PLATE "
A presente invenção refere-se a uma estufa para o tratamento 5 térmico das chapas offset denominado também "queimar a chapa", The present invention relates to a greenhouse for the heat treatment of offset plates also called "burn plate",
Como detalhado nas FIGURAS 1A e 1 B. Prendemos uma manta térmica no extremo de uma superfície curva aquecida, introduzindo no meio uma chapa offset e aplicamos na manta uma tensão envolvente sobre à chapa, garantindo um contato progressivo e linear. O processo 10 pode ser envolvente restrito ou contínuo. As detailed in FIGURES 1A and 1B. We attach a thermal blanket to the end of a heated curved surface by inserting an offset plate in the middle and apply an enveloping stress to the sheet to ensure progressive and linear contact. Process 10 may be restricted or continuous enveloping.
No estado da técnica, o processo de tratamento térmico ou queima, se efetua introduzindo a chapa offset, em um forno ou estufa, à uma temperatura constante, e um determinado tempo de permanência. Parâmetros estabelecidos pelo fabricante das chapas, a fim de 15 endurecer/cristalizar a camada da chapa offset e alongar a sua vida útil, especialmente em impressões de longa tiragem, aumentando sua dureza, resistência a produtos químicos e riscos na superfície da chapa offset. In the state of the art, the heat treatment or burning process is carried out by introducing the offset plate in a furnace or oven at a constant temperature and a certain residence time. Parameters set by the sheet metal manufacturer in order to harden / crystallize the offset sheet and extend its life, especially in long-run printing, increasing its hardness, chemical resistance and scratches on the surface of the sheet.
O inconveniente dos fornos usados no mencionado processo é que no interior do forno, o aquecimento da chapa offset é por convecção 20 através do ar, préviamente aquecido por resistências elétricas ou placas de irradiação infravermelho, sendo muito dificultoso, conseguir uma homogeneidade da temperatura em toda a superfície da chapa offset e consequentemente uma homogeneidade na cristalização ou endurecimento da camada na chapa offset, comprometendo a durabilidade 25 esperada pelo impressor gráfico em toda a superfície da chapa offset de uma forma homogênia. The disadvantage of the ovens used in said process is that inside the oven, the heating of the offset plate is by convection 20 through air, previously heated by electric resistors or infrared radiation plates, being very difficult to achieve temperature homogeneity throughout the offset plate surface and consequently a homogeneity in the crystallization or hardening of the offset plate layer, compromising the graphic printer's expected durability across the offset plate surface in a homogeneous manner.
Além da dificuldade da homogeneidade térmica, temos o alto custo
energético por perdas de calor, nas aberturas das portas para a carga e descarga das chapas offset, nos sistemas manuais (off-line) e nas aberturas para a passagem das chapas offset entrada/saída nos sistemas automáticos (on-line) através de esteiras de malha metálica para suportar o calor interno do forno. Besides the difficulty of thermal homogeneity, we have the high cost heat loss, openings for loading and unloading of offset plates, manual off-line systems and openings for offset / input offset plates in on-line automatic systems wire mesh to withstand the internal heat of the oven.
Por conta destes e outros inconvenientes não mencionados, após um longo período de estudo, pesquisas e testes, baseados mais na física quântica que na termodinâmica, a transmissão térmica por contato oferece um rendimento bem maior que os fornos atuais usados no mercado gráfico e mesmo provenientes do ramo da alimentação. Because of these and other unseen drawbacks, after a long period of study, research and testing, based more on quantum physics than thermodynamics, contact thermal transmission offers a much higher throughput than today's ovens used in the graphics market and even from the food business.
Existe ainda, o tratamento térmico das chapas fotopolímeras violetas, que no processo de revelado precisa de pré-aquecimento (pre-heat), englobadas na mesma solução. There is also the heat treatment of the violet photopolymer plates, which in the developed process needs pre-heat, encompassed in the same solution.
A transmissão térmica por contato de superfícies, tem a vantagem de ser mais fácil de administrar o aportamento de calor, de forma rápida e homogénea na superfície da chapa offset. Por ter espessuras inferiores a 0.5 mm e ser de alumínio com um alto poder de absorção térmica o aquecimento é quase que instantâneo e só precisa esquentar a superfície da estufa que estará em contato com a chapa offset. The surface contact thermal transmission has the advantage that it is easier to manage the heat input quickly and evenly on the offset plate surface. Because it is less than 0.5 mm thick and aluminum with a high thermal absorption power, the heating is almost instantaneous and only needs to heat the surface of the greenhouse that will be in contact with the offset plate.
O sistema acima mencionado tem a chapa offset e de alumínio, com dimensões mínimas parecidas a 30 cm x 40 cm e máximas de 84 cm x 110 cm com espessuras de 0,12 mm a 0,40 mm e aquecida na temperatura de queima, geralmente na faixa de 220°C / 260°C. The aforementioned system has the offset and aluminum plate, with minimum dimensions similar to 30 cm x 40 cm and maximum 84 cm x 110 cm with thicknesses from 0.12 mm to 0.40 mm and heated at firing temperature, generally in the range of 220 ° C / 260 ° C.
O contato da chapa com uma superfície plana não consegue uma homogeneidade de forma total em toda sua área, produzindo-se, por causa de sua dilatação: deformações em forma de ondulações, crateras e rugosidades na superfície da chapa offset, podendo ser de forma permanente,
tomando impossível o aquecimento uniforme e chegando assim na perda da chapa offset. The contact of the plate with a flat surface does not achieve full homogeneity in all its area, and, due to its expansion, it produces deformations in the form of ripples, craters and roughness on the surface of the offset plate, and may be permanent. , making uniform heating impossible and thus losing the offset plate.
Visando uma solução definitiva para o mencionado processo, foi desenvolvida por mim a patente de invenção: "ESTUFA CURVA DE CONFORMIDADE TÉRMICA PROGRESSIVA, PARA O TRATAMENTO TÉRMICO OU QUEIMA DAS MATRIZES LITOGRÁFICAS TAMBÉM DENOMINADAS CHAPAS OFFSET". Aiming at a definitive solution to this process, I developed the patent: "GREEN PROGRESSIVE THERMAL COMPLIANCE CURVE, FOR THE HEAT TREATMENT OR BURNING OF THE ALSO LABELS".
Como detalhado nas FIGURAS 1A e 1 B. Tendo como objetivo principal uma superfície curva (podendo ser cilíndrica) aquecida no interior por resistências elétricas ou infravermelhos. As detailed in FIGURES 1A and 1B. The primary purpose of which is a curved surface (which may be cylindrical) heated inside by electrical or infrared resistors.
Prendemos no extremo da curva, uma manta térmica e introduzimos no meio uma chapa offset. Aplicamos uma tensão envolvente sobre a chapa, garantindo um contato progressivo e linear, sendo que qualquer deformação será efetiva apenas na línhea de contato, criando uma deformação única e controlada, que a tensão envolvente irá deslocando na chapa offset e conformando-a ao longo da superfície curva até nela ficar conformada. We attached a thermal blanket to the end of the curve and inserted an offset plate in the middle. We apply an enveloping stress on the plate, ensuring a progressive and linear contact, and any deformation will be effective only on the contact line, creating a unique and controlled deformation, which the surrounding stress will shift on the offset plate and conform it along the curved surface until it conforms.
Na FIGURA 2: Vemos o mesmo sistema já descrito, com a variante que: um cilindro substitui a forma curva e a manta térmica é uma correia envolvente, fazendo o mesmo efeito já descrito, porém em forma de entrada/saída contínua e aplicando esteiras (não descritas no desenho) tornando o sistema automático. In FIGURE 2: We see the same system already described, with the variant that: a cylinder replaces the curved shape and the thermal blanket is a wrapping belt, having the same effect as described, but in continuous input / output form and applying mats ( not described in the drawing) making the system automatic.
Pode ser adaptada em todos os mecânismos já descritos uma segunda manta correia interna, entre a chapa e a superfície aquecida fazendo um sanduíche na chapa offset com a finalidade de facilitar a sua extração. A second internal belt web can be adapted to all mechanisms already described, between the plate and the heated surface by sandwiching the offset plate in order to facilitate its extraction.
Com pequenas adaptações nas correias, o mesmo aparelho serve também para o tratamento térmico das chapas fotopolímeras violetas, que no processo de revelado precisa de pré-aquecimento (pre-heat).
With minor adaptations to the belts, the same device is also suitable for the heat treatment of violet photopolymer plates, which in the developing process require pre-heat.
Claims
REIVINDICAÇÕES
"ESTUFA CURVA DE CONFORMIDADE TÉRMICA PROGRESSIVA, PARA O TRATAMENTO TÉRMICO OU QUEIMA DAS MATRIZES LITOGRÁFICAS TAMBÉM DENOMINADAS CHAPAS OFFSET". "GREEN PROGRESSIVE THERMAL COMPLIANCE CURVE FOR HEAT TREATMENT OR BURNING OF LITHOGRAPHIC MATTERS ALSO CALLED OFFSET PLATE".
Caracterizado por (FIG. 1 a/b) uma estufa curva 1 , aquecida a sua superfície por resistências elétricas 2, prendendo num extremo uma manta térmica 3, com a função de envolver matrizes litográficas 4, aplicando uma força envolvente no outro extremo. Characterized by (FIG. 1 a / b) a curved kiln 1, heated to its surface by electrical resistors 2, holding at one end a thermal blanket 3, with the function of wrapping lithographic matrices 4, applying an enveloping force at the other end.
Pode-se ainda acrescentar uma segunda manta térmica 5 afim de facilitar a extração da chapa offset.
A second thermal blanket 5 may be added to facilitate the extraction of the offset plate.
"ESTUFA CURVA DE CONFORMIDADE TÉRMICA PROGRESSIVA AUTOMÁTICA (ON-LINE), PARA O TRATAMENTO TÉRMICO OU QUEIMA DAS MATRIZES LITOGRÁFICAS TAMBÉM DENOMINADAS CHAPAS OFFSET". "GREEN PROGRESSIVE THERMAL CONFORMITY CURVE (ONLINE) FOR HEAT TREATMENT OR BURNING OF THE LITHOGRAPHIC MATTERS ALSO CALLED OFFSET PLATE".
Caracterizado por (FIG. 2) uma estufa de corpo cilíndrico com o giro motorizado 1 , aquecida a sua superfície por resistências elétricas internas 2 envolvendo o cilindro com manta térmica 3, esticada e guiada por roletes 4 formando uma correia continua com a função de guiar matrizes litográficas 5, em contato com a superfície do cilindro aquecida e com uma determinada pressão, tendo entrada e saída contínua 5a / 5b. Characterized by (FIG. 2) a motorized swivel cylindrical body kiln 1, heated to its surface by internal electrical resistors 2 surrounding the roller with thermal blanket 3, stretched and guided by rollers 4 forming a continuous belt with the guiding function lithographic matrices 5, in contact with the heated cylinder surface and at a given pressure, having continuous inlet and outlet 5a / 5b.
Pode-se ainda acrescentar uma segunda correia 6 térmica a fim de facilitar a extração da chapa offset. A second thermal belt 6 may also be added to facilitate the extraction of the offset plate.
Na FIG. 3 vemos uma variante do sistema mais acondicionado para o tratamento das chapas violeta de fotopolímero.
In FIG. 3 we see a variant of the most suitable system for treating violet photopolymer sheets.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0903483-8 | 2009-09-17 | ||
| BRPI0903483 BRPI0903483A2 (en) | 2009-09-17 | 2009-09-17 | greenhouse progressive thermal compliance curve for heat treatment or burning of lithographic matrices also called offset plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011032248A1 true WO2011032248A1 (en) | 2011-03-24 |
Family
ID=43757970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BR2010/000310 WO2011032248A1 (en) | 2009-09-17 | 2010-09-17 | Curved oven with a progressive thermal profile for treating lithographic matrices or offset plates |
Country Status (2)
| Country | Link |
|---|---|
| BR (1) | BRPI0903483A2 (en) |
| WO (1) | WO2011032248A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2319031A (en) * | 1939-11-20 | 1943-05-11 | Craig C Baker | Matrix drying and forming machine |
| GB1004227A (en) * | 1963-01-10 | 1965-09-15 | Sta Hi Corp | Matrix drying and forming apparatus |
| EP0819989A1 (en) * | 1996-07-19 | 1998-01-21 | Photomeca S.A. / Egg | Process for an automated production of printing sleeves |
| US5916403A (en) * | 1995-09-29 | 1999-06-29 | E. I. Du Pont De Nemours And Company | Methods and apparatus for forming cylindrical photosensitive elements |
-
2009
- 2009-09-17 BR BRPI0903483 patent/BRPI0903483A2/en not_active IP Right Cessation
-
2010
- 2010-09-17 WO PCT/BR2010/000310 patent/WO2011032248A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2319031A (en) * | 1939-11-20 | 1943-05-11 | Craig C Baker | Matrix drying and forming machine |
| GB1004227A (en) * | 1963-01-10 | 1965-09-15 | Sta Hi Corp | Matrix drying and forming apparatus |
| US5916403A (en) * | 1995-09-29 | 1999-06-29 | E. I. Du Pont De Nemours And Company | Methods and apparatus for forming cylindrical photosensitive elements |
| EP0819989A1 (en) * | 1996-07-19 | 1998-01-21 | Photomeca S.A. / Egg | Process for an automated production of printing sleeves |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0903483A2 (en) | 2011-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2008175988A (en) | Fixing device | |
| BRPI0621084A2 (en) | METHOD FOR HEATING A MATERIAL AND APPLIANCE FOR HEATING A MATERIAL | |
| CN203046444U (en) | Hot stamping machine for license plate | |
| FI86407C (en) | FOERFARANDE OCH ANORDNING FOER ATT UTJAEMNA TEMPERATURPROFILEN I GLASSKIVOR I EN MED VALSAR FOERSEDD UGN I EN HORISONTALHAERDNINGSANORDNING. | |
| BRPI0510046A (en) | method and apparatus for raising the temperature of a substance in a container, system, and heat exchanger | |
| WO2011032248A1 (en) | Curved oven with a progressive thermal profile for treating lithographic matrices or offset plates | |
| CN105308405B (en) | Gas supply pipe and annealing device | |
| US7828547B2 (en) | Method and apparatus for rapidly heating printing plates | |
| JPH06340365A (en) | Paper feeding mechanism of electrophotographic device | |
| JP2010122678A (en) | Iso-thermalizing graphite printer structure and method for using same | |
| JP2007316621A5 (en) | ||
| CN108116034A (en) | Constant temperature transfer interpreter Heating tube | |
| US5166523A (en) | Device for burning in light-sensitive layers in the production of printing forms | |
| JP2725514B2 (en) | Rolling roll preheating device | |
| CN206075008U (en) | A kind of special heatable fixing roll stacks of printer | |
| BRPI0415995A (en) | printing plate oven heater, method for heating printing plates, actuating means for a printing plate, method for driving a printing plate, cooling media for use with a printing plate oven, method for controlling printing plate oven heating apparatus, means of regulating the ambient temperature for a printing plate oven, method for regulating the ambient temperature in an oven compartment of a printing plate, and method for cooling a printing plate print | |
| US3122999A (en) | Cylinder heating means for rotary printing press | |
| JPS63176421A (en) | Atmosphere heat treatment furnace | |
| JPS5753773A (en) | Heat-roller fixing device | |
| JPS58213820A (en) | Heat treatment device | |
| JPS59578B2 (en) | Strip heating device for continuous annealing furnace | |
| JPH0616306A (en) | Carrying guide device for fixing device | |
| JPS62124581A (en) | Fixing device | |
| JP2853493B2 (en) | Method and apparatus for heating steel strip in continuous annealing furnace | |
| RU597U1 (en) | Electric heater for restoration of a soft roof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10816502 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 10816502 Country of ref document: EP Kind code of ref document: A1 |