GB964203A - A method of producing a heat-insulated casing - Google Patents

A method of producing a heat-insulated casing

Info

Publication number
GB964203A
GB964203A GB352/61A GB35261A GB964203A GB 964203 A GB964203 A GB 964203A GB 352/61 A GB352/61 A GB 352/61A GB 35261 A GB35261 A GB 35261A GB 964203 A GB964203 A GB 964203A
Authority
GB
United Kingdom
Prior art keywords
mould
foam material
casing
core
moulding
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
Application number
GB352/61A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB964203A publication Critical patent/GB964203A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/062—Walls defining a cabinet
    • F25D23/064—Walls defining a cabinet formed by moulding, e.g. moulding in situ
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/10—Applying counter-pressure during expanding
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B29C44/146—Shaping the lining before foaming
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
    • 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
    • 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
    • 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
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/065—Details
    • 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
    • B29L2031/762—Household appliances
    • B29L2031/7622—Refrigerators

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Refrigerator Housings (AREA)

Abstract

964,203. Making foamed hollow articles LICENTIA PATENT - VERWALTUNGSG.m.b.H. Jan. 4, 1961 [Jan. 7, 1960], No. 352/61. Heading B5A. Articles, e.g. refrigerator casings, of foamed thermoplastic material, e.g. polyurethane, on an outer or inner casing of thermoplastic material, e.g. polystyrene, the two layers being bonded together by incorporation of a liquid which slightly dissolves the casing, e.g. hydrocarbon halides, in the foam material, are made by a method comprising injection moulding of the inner or outer casing in a closed mould followed by replacement of the outer mould or mould core respectively by larger or smaller respective parts so that foam material may be expanded in the space left when this mould is closed. Fig. 1 shows a machine for moulding an outer layer of foamed material on an inner rigid casing. An injection core 1 is moved into a mould 2 and the inner casing is injection moulded. The core 1 is raised with the inner casing and the mould 2 is moved on its support 3 so that a mould 5 with a larger cavity takes its place. Hinged nozzles 6 are used to charge the mould 5 with unfoamed material in liquid form and are then swung back to the position shown in Fig. 1. The core 1 is lowered to leave a gap at the top of the mould 5 and the foam material expands and sets in the mould cavity. The foaming is effected by blowing agents in the foam material. The core 1 may be made to move laterally instead of the moulds, and two identical cores may be provided, so that one coacts with the mould 2 while the other coacts with the mould 5, either on a rotary table or on a laterally movable support. In the latter case two moulds 5 are provided one on each side of the mould 2. Reinforcements, e.g. metal frameworks, may be incorporated in the foam material by placing them in the mould 5 before foaming. In Fig. 5 such a framework 13 is shown which bears against the moulded casing 10, and may be bonded to it, and against the mould 5, through angle pieces 12. Holes 14 allow free expansion of the foam material, and excess material 15 is cut off at 16 after moulding, and the rough edge left thereby may be covered by a capping (Fig. 7, not shown). Cavities may be formed in the foam layer for insertion of locks or temperature regulators by the use of multipart rigid cores 20, 21, 22, Fig. 8, held in place in the mould 5 by bolts, as 25, or magnetically. Double wall casings may also be injection moulded and the foam material introduced as before.
GB352/61A 1960-01-07 1961-01-04 A method of producing a heat-insulated casing Expired GB964203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL35067A DE1254858B (en) 1960-01-07 1960-01-07 Method and injection molding machine for the production of a foam-insulated cool container

Publications (1)

Publication Number Publication Date
GB964203A true GB964203A (en) 1964-07-22

Family

ID=7266923

Family Applications (1)

Application Number Title Priority Date Filing Date
GB352/61A Expired GB964203A (en) 1960-01-07 1961-01-04 A method of producing a heat-insulated casing

Country Status (2)

Country Link
DE (1) DE1254858B (en)
GB (1) GB964203A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2304043A1 (en) * 1975-03-13 1976-10-08 Bosch Siemens Hausgeraete Plastics inner container for domestic refrigerators - is injection moulded has threshold profile with flexible hinge acting as seal (OE150776)
GB2224236A (en) * 1988-10-31 1990-05-02 Ikeda Bussan Co Moulding a skin covered foamed resin article,incorporating a hole.
EP0410432A2 (en) * 1989-07-26 1991-01-30 CENTRO SVILUPPO SETTORI IMPIEGO S.r.l. Process for preparing heat-insulating structural elements and products obtained thereby
CN102241101A (en) * 2011-05-18 2011-11-16 合肥美的荣事达电冰箱有限公司 Refrigerator negative-pressure foaming device and process
CN103753750A (en) * 2014-02-10 2014-04-30 山东力诺瑞特新能源有限公司 Integral foaming mould and foaming method for balcony wall-mounted water tank
CN111037832A (en) * 2019-12-31 2020-04-21 江苏金鹏汽车座椅有限公司 Method for maintaining foaming shape of seat
CN115503297A (en) * 2022-09-27 2022-12-23 南京宁通智能交通技术研究院有限公司 Material plate rich in pores and capable of absorbing and insulating sound and manufacturing method thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE717122C (en) * 1939-03-11 1942-02-06 Siemens Schuckertwereke Ag Method and device for the production of molded bodies from plastic masses, in particular hardenable synthetic resins
CH256294A (en) * 1940-06-29 1948-08-15 Ford Motor Co Thermoplastic material molding machine.
DE835343C (en) * 1941-08-22 1952-03-31 Albert Ag Chem Werke Method for producing an insulating body
DE885125C (en) * 1951-09-28 1953-08-03 Hamburger Gaswerke Gmbh Gas generating plant
DE920210C (en) * 1951-12-29 1954-11-15 Bayer Ag Process for the production of load-bearing lightweight composite structures made of plastics
DE919910C (en) * 1952-02-01 1954-11-08 Basf Ag Process for the production of molded bodies with a low specific weight and with a compact cover made of thermoplastics

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2304043A1 (en) * 1975-03-13 1976-10-08 Bosch Siemens Hausgeraete Plastics inner container for domestic refrigerators - is injection moulded has threshold profile with flexible hinge acting as seal (OE150776)
GB2224236A (en) * 1988-10-31 1990-05-02 Ikeda Bussan Co Moulding a skin covered foamed resin article,incorporating a hole.
US4973235A (en) * 1988-10-31 1990-11-27 Ikeda Bussan Co., Ltd. Mold for manufacturing a skin covered foamed plastic article incorporating a hole
GB2224236B (en) * 1988-10-31 1992-08-12 Ikeda Bussan Co Mould for manufacturing a skin covered foamed plastic article incorporating a hole
EP0410432A2 (en) * 1989-07-26 1991-01-30 CENTRO SVILUPPO SETTORI IMPIEGO S.r.l. Process for preparing heat-insulating structural elements and products obtained thereby
EP0410432A3 (en) * 1989-07-26 1991-07-24 Centro Sviluppo Settori Impiego S.R.L. Process for preparing heat-insulating structural elements and products obtained thereby
CN102241101A (en) * 2011-05-18 2011-11-16 合肥美的荣事达电冰箱有限公司 Refrigerator negative-pressure foaming device and process
CN103753750A (en) * 2014-02-10 2014-04-30 山东力诺瑞特新能源有限公司 Integral foaming mould and foaming method for balcony wall-mounted water tank
CN103753750B (en) * 2014-02-10 2015-12-09 山东力诺瑞特新能源有限公司 A kind of balcony wall-hanging water tank monoblock type foaming mould and foaming method
CN111037832A (en) * 2019-12-31 2020-04-21 江苏金鹏汽车座椅有限公司 Method for maintaining foaming shape of seat
CN115503297A (en) * 2022-09-27 2022-12-23 南京宁通智能交通技术研究院有限公司 Material plate rich in pores and capable of absorbing and insulating sound and manufacturing method thereof
CN115503297B (en) * 2022-09-27 2023-06-09 南京宁通智能交通技术研究院有限公司 Porous sound-absorbing material plate and manufacturing method thereof

Also Published As

Publication number Publication date
DE1254858B (en) 1967-11-23

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