BR8004786A - Processo e aparelho para moldagem por injecao - Google Patents

Processo e aparelho para moldagem por injecao

Info

Publication number
BR8004786A
BR8004786A BR8004786A BR8004786A BR8004786A BR 8004786 A BR8004786 A BR 8004786A BR 8004786 A BR8004786 A BR 8004786A BR 8004786 A BR8004786 A BR 8004786A BR 8004786 A BR8004786 A BR 8004786A
Authority
BR
Brazil
Prior art keywords
appliance
injection molding
molding process
injection
molding
Prior art date
Application number
BR8004786A
Other languages
English (en)
Inventor
B Bezner
Original Assignee
Helioset Advanced Tech
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 Helioset Advanced Tech filed Critical Helioset Advanced Tech
Publication of BR8004786A publication Critical patent/BR8004786A/pt

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • B29D23/003—Pipe joints, e.g. straight joints
    • B29D23/008—T-joints
    • 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
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • 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
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14598—Coating tubular 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14598—Coating tubular articles
    • B29C45/14614—Joining tubular 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
    • B29C66/52241—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/30—Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/14—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes molded
    • F28F2255/143—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes molded injection molded
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
BR8004786A 1979-07-26 1980-07-25 Processo e aparelho para moldagem por injecao BR8004786A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL57898A IL57898A (en) 1979-07-26 1979-07-26 Method for injection-molding of elements onto extruded units

Publications (1)

Publication Number Publication Date
BR8004786A true BR8004786A (pt) 1981-02-10

Family

ID=11051214

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8004786A BR8004786A (pt) 1979-07-26 1980-07-25 Processo e aparelho para moldagem por injecao

Country Status (16)

Country Link
US (1) US4352772A (pt)
JP (1) JPS6035253B2 (pt)
AR (1) AR225049A1 (pt)
AT (1) AT387749B (pt)
AU (1) AU532491B2 (pt)
BR (1) BR8004786A (pt)
CH (1) CH645058A5 (pt)
DE (1) DE3027087C2 (pt)
ES (1) ES493588A0 (pt)
FR (1) FR2462258A1 (pt)
GB (1) GB2054449B (pt)
IL (1) IL57898A (pt)
IT (1) IT1132242B (pt)
MX (1) MX151833A (pt)
PT (1) PT71613A (pt)
ZA (1) ZA804502B (pt)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4715801A (en) * 1981-07-15 1987-12-29 Corning Glass Works Apparatus for high speed manifolding of honeycomb structures
DE3420848A1 (de) * 1984-06-05 1985-12-05 Gebr. Happich Gmbh, 5600 Wuppertal Verfahren und vorrichtung zum anbringen von endstuecken an kunststoff-profilleisten
DE3575695D1 (de) * 1984-07-18 1990-03-08 Akzo Gmbh Verfahren und vorrichtung zum herstellen von waerme- und/oder stoffaustauschern, die rohre enthalten.
DE3426445A1 (de) * 1984-07-18 1986-01-30 Akzo Gmbh, 5600 Wuppertal Vorrichtung und verfahren zum herstellen von rohrboeden fuer waerme und/oder stoffaustauscher
DE3511528C1 (de) * 1985-03-29 1991-01-03 Coronet - Werke Heinrich Schlerf Gmbh, 6948 Wald-Michelbach Verfahren zur Herstellung von Borstenwaren
GB2175243A (en) * 1985-05-21 1986-11-26 Diversified Prod Racquets
JPS63109027A (ja) * 1986-10-28 1988-05-13 Nippon Taisanbin Kogyo Kk 球状パツキンの製造方法
US4743481A (en) * 1986-11-26 1988-05-10 Flex Technologies, Inc. Molding process for articles having an irregular shaped internal passage
US5294397A (en) * 1987-06-28 1994-03-15 Terumo Kabushiki Kaisha Heat exchanger for medical treatment
JP2732875B2 (ja) * 1988-02-03 1998-03-30 コロネツト‐ヴエルケ ハインリツヒ シユレルフ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 剛毛製品を製造する方法
US4948541A (en) * 1988-10-27 1990-08-14 Stephen Beck Method of forming an arm rest for a chair having a tubular passageway for containing control mechanisms
US5648036A (en) * 1992-01-28 1997-07-15 Phoenix Aktiengesellschaft Device and process for producing the corners of sealing frames
US5255022A (en) * 1992-04-02 1993-10-19 Xerox Corporation Ink manifold having elastomer channel plate for ink jet printhead and process for making
CA2073935C (en) 1992-05-01 2000-10-17 Changize Sadr Method for molding manifold for automotive vehicle
US5332384A (en) * 1992-07-29 1994-07-26 Gerhard Abramat Blow mold guide pin and alignment device
CA2089978C (en) * 1993-02-19 2005-04-12 Tadeusz Borys Automotive trim piece
CH687069A5 (de) * 1993-03-04 1996-09-13 Fischer Georg Rohrleitung Verfahren und Vorrichtung zur Herstellung eines Formteiles aus Kunststoff, sowie das durch das Verfahren hergestellte Formteil.
IT1260635B (it) * 1993-04-02 1996-04-22 Contitech Ages S R L Procedimento per la produzione di un articolo cavo di materiale elastomerico.
GB9308418D0 (en) * 1993-04-23 1993-06-09 Int Radiator Services Ltd Moulding
US5435865A (en) * 1993-07-16 1995-07-25 Decoma International Inc. Process for manufacturing an automotive trim piece having a polymeric skin mounted to a substrate
US6090336A (en) * 1994-07-21 2000-07-18 Decoma International Inc. Method for manufacturing an injection-molded article with outer film secured thereto
CA2169015A1 (en) * 1996-02-07 1997-08-08 Michael Munger Compression - injection molding apparatus
US5743011A (en) * 1996-02-23 1998-04-28 Mascotech Tubular Products, Inc. Process of manufacturing vehicle manifolds
DE19913501A1 (de) * 1999-03-25 2000-11-16 Mahle Filtersysteme Gmbh Verfahren zum Verbinden von zwei Kunststoffbauteilen
US6337044B1 (en) * 2000-10-06 2002-01-08 Chin Chun Hsing Decoration Inc. Molding process for manufacturing a molded article
WO2002088614A1 (en) * 2001-05-02 2002-11-07 Aquatherm Industries, Inc. Overmolding insert for heat exchanger
NO313473B1 (no) * 2001-10-12 2002-10-07 Solarnor As Solfangerplate, fremgangsmåte for driftssikring av en solfanger og fremgangsmåte for fremstilling av en solfangerplate
US7459065B2 (en) * 2004-02-18 2008-12-02 General Motors Corporation Hydrogen generator photovoltaic electrolysis reactor system
JP2006289668A (ja) * 2005-04-07 2006-10-26 Calsonic Kansei Corp 樹脂射出成形装置及び筒状樹脂部品
ITTO20080017A1 (it) * 2008-01-10 2009-07-11 Fabrizio Rivoli Giunto per elettrofusione, suo procedimento di produzione e suo dispositivo di gestione
WO2010020013A1 (en) * 2008-08-22 2010-02-25 Redflow Pty Ltd Integral manifold
JP5497669B2 (ja) * 2009-01-06 2014-05-21 日本碍子株式会社 成形型、及び、その成形型を用いた成形体の製造方法
US8851308B2 (en) * 2009-12-10 2014-10-07 Alcon Research, Ltd. Systems and methods for composite frame systems
DE102010016353B4 (de) * 2010-04-07 2021-12-30 Ihle Maschinenbau Gmbh Vorrichtung und Verfahren zur Herstellung einer Kapillarrohrmatte
US8708689B2 (en) * 2011-09-09 2014-04-29 Facebook, Inc. Co-molding display with body of mobile device
ES2572705T3 (es) * 2012-01-05 2016-06-01 Nv Bekaert Sa Molde de inyección para hilo de sierra, método para producir un hilo de sierra y el hilo de sierra resultante del mismo
US9227353B2 (en) * 2012-11-08 2016-01-05 Solar Hydronics Corporation Molding apparatus and method for operating same
CN104633969A (zh) * 2014-12-27 2015-05-20 王踵先 全塑平板太阳能集热芯板的制造方法
WO2019090383A1 (en) * 2017-11-10 2019-05-16 Aspire Polymers Pty Ltd Improvements relating to solar heaters

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1465222A (en) * 1921-08-17 1923-08-14 Kirton Richard Gervase Method of making concrete structures
DE1030124B (de) * 1955-07-04 1958-05-14 Theysohn & Heumach Leitungsrohr aus Kunststoff und Verfahren zu seiner Herstellung
US3081497A (en) * 1960-05-06 1963-03-19 Ralph M Hill Method for molding objects with inserts
DE1297323B (de) * 1963-03-25 1969-06-12 Koemmerling Gmbh Geb Vorrichtung zum Einbringen von stiftfoermigen mindestens eine Verdickung aufweisenden Einlegeteilen in Vielfachformen
US3362302A (en) * 1965-08-12 1968-01-09 Studley Paper Company Inc Bag closure
US3618170A (en) * 1969-07-14 1971-11-09 Edward W Owens Apparatus for molding plastic closures
US3643805A (en) * 1970-01-20 1972-02-22 Abcor Water Management Co Inc A membrane system which includes a tube sheet for securing supported membrane tubes therein
US3784665A (en) * 1971-01-08 1974-01-08 Monarch Marking Systems Inc Method of fabricating an integrated piston and cylinder mechanism and valve assembly
BE793243A (fr) * 1971-12-27 1973-04-16 Western Electric Co Procede et appareil pour mouler de la matiere plastique autour de pieces introduites elastiques
US3865666A (en) * 1973-05-08 1975-02-11 Int Paper Co Method of making a catheter
GB1508593A (en) * 1975-06-10 1978-04-26 British Petroleum Co Solar heating apparatus
FR2315073A1 (fr) * 1975-06-16 1977-01-14 Gordon Ltd Bob Dispositifs solaires de chauffage
US4114597A (en) * 1975-12-31 1978-09-19 The Franklin Institute Unitary solar collector
DE2657468A1 (de) * 1976-12-18 1978-06-22 Bbc Brown Boveri & Cie Waermeabsorber fuer einen solarkollektor sowie verfahren zu seiner herstellung
FR2405808A1 (fr) * 1977-10-12 1979-05-11 Allibert Exploitation Corps creux en matiere plastique et son procede de fabrication
US4213450A (en) * 1978-02-17 1980-07-22 Perez Gilbert H Modular solar collector panel and manifold therefor
DE2832304A1 (de) * 1978-07-22 1980-01-31 Elkamet Werk Sonnenkollektor aus kunststoff

Also Published As

Publication number Publication date
PT71613A (en) 1980-08-01
ES8105624A1 (es) 1981-07-01
GB2054449A (en) 1981-02-18
AU6034780A (en) 1981-01-29
ES493588A0 (es) 1981-07-01
JPS6035253B2 (ja) 1985-08-13
IT8023673A0 (it) 1980-07-24
IL57898A (en) 1983-05-15
CH645058A5 (de) 1984-09-14
ZA804502B (en) 1981-08-26
GB2054449B (en) 1983-07-20
AU532491B2 (en) 1983-09-29
MX151833A (es) 1985-04-01
AT387749B (de) 1989-03-10
IL57898A0 (en) 1979-11-30
US4352772A (en) 1982-10-05
DE3027087C2 (de) 1993-11-25
ATA373180A (de) 1988-08-15
FR2462258A1 (fr) 1981-02-13
JPS5621837A (en) 1981-02-28
FR2462258B1 (pt) 1983-06-24
AR225049A1 (es) 1982-02-15
IT1132242B (it) 1986-06-25
DE3027087A1 (de) 1981-02-12

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Legal Events

Date Code Title Description
MK Patent expired

Effective date: 19950725

B15K Others concerning applications: alteration of classification

Ipc: B29D 23/00 (2006.01), B29C 45/14 (2006.0