WO2007059434A3 - Radiant pre-heating of mold surfaces - Google Patents

Radiant pre-heating of mold surfaces Download PDF

Info

Publication number
WO2007059434A3
WO2007059434A3 PCT/US2006/060781 US2006060781W WO2007059434A3 WO 2007059434 A3 WO2007059434 A3 WO 2007059434A3 US 2006060781 W US2006060781 W US 2006060781W WO 2007059434 A3 WO2007059434 A3 WO 2007059434A3
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
melt
radiant
mold
preheated
Prior art date
Application number
PCT/US2006/060781
Other languages
French (fr)
Other versions
WO2007059434A2 (en
Inventor
Frank J Baresich
Original Assignee
Thermal Wave Molding Corp
Frank J Baresich
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 Thermal Wave Molding Corp, Frank J Baresich filed Critical Thermal Wave Molding Corp
Publication of WO2007059434A2 publication Critical patent/WO2007059434A2/en
Publication of WO2007059434A3 publication Critical patent/WO2007059434A3/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
    • B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
    • B29C45/2642—Heating or cooling means therefor
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • 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
    • B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
    • B29C45/2632—Stampers; Mountings thereof
    • B29C2045/2634—Stampers; Mountings thereof mounting layers between stamper and mould or on the rear surface of the stamper
    • B29C2045/2636—Stampers; Mountings thereof mounting layers between stamper and mould or on the rear surface of the stamper insulating layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs
    • B29L2017/005—CD''s, DVD''s

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

A molding apparatus (12) and process is apt for cyclic production of very thin walled articles such as compact data discs. A thermoplastic melt is introduced into a mold (10) at a temperature above its solidifying temperature. The mold is temperature controlled but has cavity facing surfaces (10A) that are preheated and can be insulated. The surfaces are preheated using a radiant heater (18), up to a surface temperature above the softening temperature of the ,melt. This surface heating is shallow due to the radiant application of heat energy, but extends a time during which the melt temperature is sufficiently elevated that the melt can flow along the cavity surfaces. A positioning robot (20) is used to move the radiant heater (18) into place at the appropriate point in the molding cycle.
PCT/US2006/060781 2005-11-21 2006-11-10 Radiant pre-heating of mold surfaces WO2007059434A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US73910305P 2005-11-21 2005-11-21
US60/739,103 2005-11-21

Publications (2)

Publication Number Publication Date
WO2007059434A2 WO2007059434A2 (en) 2007-05-24
WO2007059434A3 true WO2007059434A3 (en) 2007-11-08

Family

ID=38049361

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/060781 WO2007059434A2 (en) 2005-11-21 2006-11-10 Radiant pre-heating of mold surfaces

Country Status (1)

Country Link
WO (1) WO2007059434A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN213564191U (en) * 2020-07-02 2021-06-29 昆山市新腾胜精密模具有限公司 Water cooling device of injection mold

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5287910A (en) * 1992-09-11 1994-02-22 Howmet Corporation Permanent mold casting of reactive melt
US5555504A (en) * 1994-06-10 1996-09-10 Johnson & Johnson Vision Products, Inc. Production line tracking and quality control system
US6549095B2 (en) * 1998-10-29 2003-04-15 Murata Manufacturing Co. Ltd. Dielectric filter, dielectric duplexer, and communication apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5287910A (en) * 1992-09-11 1994-02-22 Howmet Corporation Permanent mold casting of reactive melt
US5555504A (en) * 1994-06-10 1996-09-10 Johnson & Johnson Vision Products, Inc. Production line tracking and quality control system
US6549095B2 (en) * 1998-10-29 2003-04-15 Murata Manufacturing Co. Ltd. Dielectric filter, dielectric duplexer, and communication apparatus

Also Published As

Publication number Publication date
WO2007059434A2 (en) 2007-05-24

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