WO2008041122A3 - Heating element, particularly for hot runners of injection moulding apparatus of plastic material, and hotrunner - Google Patents

Heating element, particularly for hot runners of injection moulding apparatus of plastic material, and hotrunner Download PDF

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Publication number
WO2008041122A3
WO2008041122A3 PCT/IB2007/002993 IB2007002993W WO2008041122A3 WO 2008041122 A3 WO2008041122 A3 WO 2008041122A3 IB 2007002993 W IB2007002993 W IB 2007002993W WO 2008041122 A3 WO2008041122 A3 WO 2008041122A3
Authority
WO
WIPO (PCT)
Prior art keywords
heating element
plate
plastic material
injection moulding
hotrunner
Prior art date
Application number
PCT/IB2007/002993
Other languages
French (fr)
Other versions
WO2008041122A2 (en
Inventor
Gianfranco Cirri
Maria Prudenziati
Original Assignee
Inglass Spa
Gianfranco Cirri
Maria Prudenziati
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 Inglass Spa, Gianfranco Cirri, Maria Prudenziati filed Critical Inglass Spa
Publication of WO2008041122A2 publication Critical patent/WO2008041122A2/en
Publication of WO2008041122A3 publication Critical patent/WO2008041122A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2737—Heating or cooling means therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H05B3/262—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an insulated metal plate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2737—Heating or cooling means therefor
    • B29C2045/2743—Electrical heating element constructions
    • B29C2045/2745—Film-like electrical heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2737—Heating or cooling means therefor
    • B29C2045/2743—Electrical heating element constructions
    • B29C2045/2746—Multilayered electrical heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2737—Heating or cooling means therefor
    • B29C2045/275—Planar heating or cooling elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2737—Heating or cooling means therefor
    • B29C2045/2751—Electrical power supply connections

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Resistance Heating (AREA)

Abstract

Heating element for apparatuses for injection moulding of plastic material, comprising a plate (1) made of thermally conductive material and characterized by an improved treatment of preparation of the surface of the plate, for neutralizing phenomena of corrosion. Provided on said plate is an integrated heating system (based on the Italian patent application No. IT-A-TO2004A000253 and U.S. patent application No. US-A-2005/0257367), thus rendering the heating element capable of operating at up to 600°C, as well as a possible glazing for sealing the insulating final layer of Al2O3 and by final anti-emissive gold flash. The heating element is likewise equipped with electrical connections that are reliable at high temperatures and with systems of clamping to a hot runner (H) also in the case where the base materials of the plate and the hot runner are different.
PCT/IB2007/002993 2006-10-05 2007-10-04 Heating element, particularly for hot runners of injection moulding apparatus of plastic material, and hotrunner WO2008041122A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO20060314 ITMO20060314A1 (en) 2006-10-05 2006-10-05 INNOVATIVE HEATING ELEMENT, IN PARTICULAR FOR HOT ROOMS OF PLASTIC INJECTION MOLDING EQUIPMENT
ITMO2006A000314 2006-10-05

Publications (2)

Publication Number Publication Date
WO2008041122A2 WO2008041122A2 (en) 2008-04-10
WO2008041122A3 true WO2008041122A3 (en) 2008-07-03

Family

ID=39268857

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/002993 WO2008041122A2 (en) 2006-10-05 2007-10-04 Heating element, particularly for hot runners of injection moulding apparatus of plastic material, and hotrunner

Country Status (2)

Country Link
IT (1) ITMO20060314A1 (en)
WO (1) WO2008041122A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMO20090026A1 (en) * 2009-02-04 2010-08-05 Maria Prudenziati INNOVATIVE HEATING ELEMENT, IN PARTICULAR FOR MOLDS AND HOT ROOMS OF PLASTIC INJECTION MOLDING EQUIPMENT IN THIN THICKNESS
ITMO20090085A1 (en) * 2009-04-07 2010-10-08 Maria Prudenziati INFRARED RADIATION SOURCE, A FAST RESPONSE AND HIGH EFFICIENCY
JP2013004247A (en) * 2011-06-15 2013-01-07 Shin Etsu Chem Co Ltd Ceramic heater
DE102012103120A1 (en) * 2012-04-11 2013-10-17 Günther Heisskanaltechnik Gmbh Tool insert with layer heating, mold plate with such a tool insert and method for operating such a tool insert
IT201900022794A1 (en) * 2019-12-03 2021-06-03 Giuseppe Campari SHEET METAL DISCOVER PAD

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US662003A (en) * 1900-06-09 1900-11-20 Alfred Lamm Washer.
DE19941038A1 (en) * 1999-08-28 2001-03-01 Guenther Heiskanaltechnik Gmbh Electric heater for hot runner systems and method for producing such a heater
WO2001098054A1 (en) * 2000-06-19 2001-12-27 Husky Injection Molding Systems Ltd. Thick film heater apparatus
WO2004043672A1 (en) * 2002-11-12 2004-05-27 Watlow Gmbh Heating element arranged on a tubular conduit
US20050257367A1 (en) * 2004-04-23 2005-11-24 Incos S.P.A. Method for producing heated components for injection moulding apparatus and heating equipment in general

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US662003A (en) * 1900-06-09 1900-11-20 Alfred Lamm Washer.
DE19941038A1 (en) * 1999-08-28 2001-03-01 Guenther Heiskanaltechnik Gmbh Electric heater for hot runner systems and method for producing such a heater
WO2001098054A1 (en) * 2000-06-19 2001-12-27 Husky Injection Molding Systems Ltd. Thick film heater apparatus
WO2004043672A1 (en) * 2002-11-12 2004-05-27 Watlow Gmbh Heating element arranged on a tubular conduit
US20050257367A1 (en) * 2004-04-23 2005-11-24 Incos S.P.A. Method for producing heated components for injection moulding apparatus and heating equipment in general

Also Published As

Publication number Publication date
WO2008041122A2 (en) 2008-04-10
ITMO20060314A1 (en) 2008-04-06

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