FR2117767A1 - Machining rubber - particularly printing cylinders at low temp produced by spray of cryogenic fluid - Google Patents

Machining rubber - particularly printing cylinders at low temp produced by spray of cryogenic fluid

Info

Publication number
FR2117767A1
FR2117767A1 FR7045380A FR7045380A FR2117767A1 FR 2117767 A1 FR2117767 A1 FR 2117767A1 FR 7045380 A FR7045380 A FR 7045380A FR 7045380 A FR7045380 A FR 7045380A FR 2117767 A1 FR2117767 A1 FR 2117767A1
Authority
FR
France
Prior art keywords
spray
workpiece
cryogenic fluid
low temp
printing cylinders
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
FR7045380A
Other languages
French (fr)
Other versions
FR2117767B1 (en
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.)
Air Liquide SA
Original Assignee
Air Liquide SA
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 Air Liquide SA filed Critical Air Liquide SA
Priority to FR7045380A priority Critical patent/FR2117767A1/en
Publication of FR2117767A1 publication Critical patent/FR2117767A1/en
Application granted granted Critical
Publication of FR2117767B1 publication Critical patent/FR2117767B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N7/00—Shells for rollers of printing machines
    • B41N7/005—Coating of the composition; Moulding; Reclaiming; Finishing; Trimming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D11/00—Heat-exchange apparatus employing moving conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/003—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by using permeable mass, perforated or porous materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Dispersion Chemistry (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

When flabby materials such as rubber are machined at normal temps. e.g. the grinding of a printing cylinder the operation is slow and hazardous because the workpiece heats up, gives off an offensive smell, clogs up the grinding wheel and causes it to splinter. This can be overcome and machine speeded up by freezing the workpiece with a spray of cryogenic fluid such as liquid nitrogen. The fluid is vaporised just before it meets the workpiece by being passed through an evaporator which receives radiant and convected heat, pref. from being in close proximity to the workpiece upstream from the machining zone. The vapour spray is much more effective than a liquid, when many droplets bounce off with little cooling effect.
FR7045380A 1970-12-16 1970-12-16 Machining rubber - particularly printing cylinders at low temp produced by spray of cryogenic fluid Granted FR2117767A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7045380A FR2117767A1 (en) 1970-12-16 1970-12-16 Machining rubber - particularly printing cylinders at low temp produced by spray of cryogenic fluid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7045380A FR2117767A1 (en) 1970-12-16 1970-12-16 Machining rubber - particularly printing cylinders at low temp produced by spray of cryogenic fluid

Publications (2)

Publication Number Publication Date
FR2117767A1 true FR2117767A1 (en) 1972-07-28
FR2117767B1 FR2117767B1 (en) 1973-11-30

Family

ID=9065897

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7045380A Granted FR2117767A1 (en) 1970-12-16 1970-12-16 Machining rubber - particularly printing cylinders at low temp produced by spray of cryogenic fluid

Country Status (1)

Country Link
FR (1) FR2117767A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2389858A1 (en) * 1977-05-04 1978-12-01 Sentras Ag
FR2505467A1 (en) * 1981-05-08 1982-11-12 Air Liquide METHOD AND INSTALLATION FOR TRANSIENT RIGIDIFICATION OF A PRODUCT IN MOLDED MATERIAL
DE10131421A1 (en) * 2001-06-29 2003-01-30 Nexpress Solutions Llc Method of applying elastomeric material onto printer cylinder involves cooling by means of liquid nitrogen, helium or dry ice
GB2400059A (en) * 2003-04-01 2004-10-06 Unova A method and apparatus for grinding using liquid nitrogen coolant

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2389858A1 (en) * 1977-05-04 1978-12-01 Sentras Ag
FR2505467A1 (en) * 1981-05-08 1982-11-12 Air Liquide METHOD AND INSTALLATION FOR TRANSIENT RIGIDIFICATION OF A PRODUCT IN MOLDED MATERIAL
DE10131421A1 (en) * 2001-06-29 2003-01-30 Nexpress Solutions Llc Method of applying elastomeric material onto printer cylinder involves cooling by means of liquid nitrogen, helium or dry ice
GB2400059A (en) * 2003-04-01 2004-10-06 Unova A method and apparatus for grinding using liquid nitrogen coolant
GB2400059B (en) * 2003-04-01 2005-03-09 Unova Workpiece cooling during grinding

Also Published As

Publication number Publication date
FR2117767B1 (en) 1973-11-30

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Legal Events

Date Code Title Description
ST Notification of lapse