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DE69223452D1 - Herstellung von mit thermoplastischem Folienmaterial eingekapseltem Einlagen durch mehrstufiges Formpressen - Google Patents

Herstellung von mit thermoplastischem Folienmaterial eingekapseltem Einlagen durch mehrstufiges Formpressen

Info

Publication number
DE69223452D1
DE69223452D1 DE69223452T DE69223452T DE69223452D1 DE 69223452 D1 DE69223452 D1 DE 69223452D1 DE 69223452 T DE69223452 T DE 69223452T DE 69223452 T DE69223452 T DE 69223452T DE 69223452 D1 DE69223452 D1 DE 69223452D1
Authority
DE
Germany
Prior art keywords
production
film material
compression molding
thermoplastic film
stage compression
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.)
Expired - Fee Related
Application number
DE69223452T
Other languages
English (en)
Other versions
DE69223452T2 (de
Inventor
Lana M Sheer
Lloyd Fox
John Carl Solenberger
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.)
Virginia Tech Foundation Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Application granted granted Critical
Publication of DE69223452D1 publication Critical patent/DE69223452D1/de
Publication of DE69223452T2 publication Critical patent/DE69223452T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
    • B29C70/865—Incorporated in coherent impregnated reinforcing layers, e.g. by winding completely encapsulated
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/005—Impregnating or encapsulating
    • 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
    • B29C2035/0811—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 induction
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • B29C2043/181—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles encapsulated
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • B29C2043/181—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles encapsulated
    • B29C2043/182—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles encapsulated completely
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/001—Shaping in several steps
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
    • B29C43/146—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps for making multilayered articles
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2267/00—Use of polyesters or derivatives thereof as reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2307/00—Use of elements other than metals as reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3055—Cars
    • B29L2031/3061—Number plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/239—Complete cover or casing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
DE69223452T 1991-05-15 1992-05-15 Herstellung von mit thermoplastischem Folienmaterial eingekapseltem Einlagen durch mehrstufiges Formpressen Expired - Fee Related DE69223452T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70068791A 1991-05-15 1991-05-15

Publications (2)

Publication Number Publication Date
DE69223452D1 true DE69223452D1 (de) 1998-01-22
DE69223452T2 DE69223452T2 (de) 1998-07-09

Family

ID=24814504

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69223452T Expired - Fee Related DE69223452T2 (de) 1991-05-15 1992-05-15 Herstellung von mit thermoplastischem Folienmaterial eingekapseltem Einlagen durch mehrstufiges Formpressen

Country Status (6)

Country Link
US (2) US5419864A (de)
EP (1) EP0517016B1 (de)
JP (1) JPH06270175A (de)
CA (1) CA2068617A1 (de)
DE (1) DE69223452T2 (de)
MX (1) MX9202238A (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5768813A (en) * 1992-05-13 1998-06-23 Reboul; Jerome Carrier for an electronic identification device
US5907273A (en) * 1993-11-24 1999-05-25 Rochester Gauges, Inc. Linear positioning indicator
JP2997875B2 (ja) * 1996-11-19 2000-01-11 博敏 西田 樹脂封止成形品の射出成形方法
US5847574A (en) * 1996-12-31 1998-12-08 Mcdonnell Douglas Corporation Method and apparatus for testing encapsulated circuits
FR2768707B1 (fr) * 1997-09-22 1999-10-29 Plastic Omnium Cie Dispositif de transport et/ou de collecte en matiere plastique moulee comportant un dispositif d'identification et procede de fabrication
JP3732657B2 (ja) * 1998-07-09 2006-01-05 矢崎総業株式会社 被覆電線の接続方法及び接続構造
US6246381B1 (en) 1999-07-01 2001-06-12 Telaxis Communications Corporation Insert mold process for forming polarizing grid element
US6753628B1 (en) * 1999-07-29 2004-06-22 Encap Motor Corporation High speed spindle motor for disc drive
US20030146082A1 (en) * 2002-01-16 2003-08-07 Ventmaster (Europe) Ltd. Ultra violet lamp ventilation system method and apparatus
US7077990B2 (en) * 2002-06-26 2006-07-18 Cool Options, Inc. High-density, thermally-conductive plastic compositions for encapsulating motors
ITRE20030005A1 (it) * 2003-01-20 2004-07-21 Sacmi Metodo per la formatura di oggetti mediante stampaggio
GB0322358D0 (en) * 2003-09-24 2003-10-22 Bioprogress Technology Ltd Improvements in powder compaction and enrobing
US20090127740A1 (en) * 2007-11-19 2009-05-21 E.I. Du Pont De Nemours And Company Use of polyamide compositions for making molded articles having improved adhesion, molded articles thereof and methods for adhering such materials
DE102007061004A1 (de) * 2007-12-18 2009-06-25 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Integration eines Sensors in ein Bauteil, insbesondere in einen Stoßfänger eines Kraftfahrzeugs
US9662812B2 (en) * 2012-02-14 2017-05-30 Taiwan Semiconductor Manufacturing Company, Ltd. Methods for molding integrated circuits
CN103240833B (zh) * 2012-02-14 2015-11-18 台湾积体电路制造股份有限公司 模制集成电路的方法
JP2014188738A (ja) * 2013-03-26 2014-10-06 Tokai Rubber Ind Ltd 繊維強化熱可塑性樹脂成形体の製法
US10047602B2 (en) * 2015-09-09 2018-08-14 Aps Technology, Inc. Antennas for a drilling system and method of making same
US20190061206A1 (en) * 2017-08-31 2019-02-28 Ford Global Technologies, Llc Composite article molding
CN109166716A (zh) * 2018-08-20 2019-01-08 长钰模具(苏州)有限公司 一种同向中间出脚smd电感热压模具
CN113613870A (zh) * 2019-03-28 2021-11-05 帝人株式会社 压制成型体的制造方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1883704A (en) * 1931-02-05 1932-10-18 Seiberling Latex Products Comp Ball covering process
US1833704A (en) * 1931-04-10 1931-11-24 Frank M Bins Means for suspending fabric ventilation tubing, etc.
US3147324A (en) * 1960-10-20 1964-09-01 Louis F Muccino Methods of covering golf balls
JPS423327B1 (de) * 1963-04-01 1967-02-13
US4370613A (en) * 1979-10-02 1983-01-25 General Scanning, Inc. Galvanometer with molded outer layer under hoop stress
US4632798A (en) * 1983-07-27 1986-12-30 Celanese Corporation Encapsulation of electronic components with anisotropic thermoplastic polymers
US4756075A (en) * 1984-09-13 1988-07-12 The Globe Tool And Engineering Company Method and apparatus for manufacturing a preform for a flat coil dynamoelectric device
NL8601890A (nl) * 1986-07-21 1988-02-16 Polynorm Nv Werkwijze voor het vervaardigen van een paneel.
US4861653A (en) * 1987-09-02 1989-08-29 E. I. Du Pont De Nemours And Company Pitch carbon fibers and batts
JPH0689224B2 (ja) * 1987-09-11 1994-11-09 ポリプラスチックス株式会社 低応力封止材
JPH01318045A (ja) * 1988-05-10 1989-12-22 E I Du Pont De Nemours & Co ガラス繊維と熱可塑性繊維との湿式成形混合物よりの複合材料
US4891176A (en) * 1988-05-31 1990-01-02 Auto-Fab, Inc. Resin transfer molding process
JPH02198114A (ja) * 1988-10-03 1990-08-06 E I Du Pont De Nemours & Co 製造物品
AU623178B2 (en) * 1988-10-03 1992-05-07 E.I. Du Pont De Nemours And Company Improved thermal conductive material
US4986545A (en) * 1989-12-13 1991-01-22 Spalding Sports Worldwide Golf ball compositions
US5036580A (en) * 1990-03-14 1991-08-06 E. I. Du Pont De Nemours And Company Process for manufacturing a polymeric encapsulated transformer

Also Published As

Publication number Publication date
US5688575A (en) 1997-11-18
EP0517016B1 (de) 1997-12-10
MX9202238A (es) 1992-11-01
DE69223452T2 (de) 1998-07-09
EP0517016A1 (de) 1992-12-09
JPH06270175A (ja) 1994-09-27
US5419864A (en) 1995-05-30
CA2068617A1 (en) 1992-11-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: VIRGINIA TECH FOUNDATION,INC, BLACKSBURG, VA, US

8339 Ceased/non-payment of the annual fee