DE833048C - Process for the production of self-supporting, heat-insulating panels from plastic casting compounds - Google Patents
Process for the production of self-supporting, heat-insulating panels from plastic casting compoundsInfo
- Publication number
- DE833048C DE833048C DEM3604A DEM0003604A DE833048C DE 833048 C DE833048 C DE 833048C DE M3604 A DEM3604 A DE M3604A DE M0003604 A DEM0003604 A DE M0003604A DE 833048 C DE833048 C DE 833048C
- Authority
- DE
- Germany
- Prior art keywords
- poured
- casting
- casting compound
- self
- supporting
- 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
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
- 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
-
- 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
- F25D23/08—Parts formed wholly or mainly of plastics materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Refrigerator Housings (AREA)
Description
Verfahren zur Herstellung selbsttragender, wärmeisolierender Platten aus Kunststoffgußmassen Die Erfindung betrifft ein Verfahren zur Herstellung selbsttragender, wärmeisolierender Platten aus Kunststoffgußmassen, insbesondere für Türen von Kühlschränken.Process for the production of self-supporting, heat-insulating panels made of plastic molding compounds The invention relates to a method for producing self-supporting, heat-insulating panels made from plastic molding compounds, in particular for refrigerator doors.
Die bekannten Kunststoffgußmassen hoher Wärmeisolierfähigkeit zeichnen sich nicht durch eine so hohe mechanische Festigkeit aus, wie es für größere belastete Platten, z. B. Kühlschranktüren, erforderlich wäre. Es sind zwar auch Kunststoffgußmassen hoher mechanischer Festigkeit bekannt; dieselben weisen aber keine zur Isolierung von Kühlschränken usw. hinreichende Wärmeisolierfähigkeit auf. Daher war man hisher gezwungen, derartige Platten, die sowohl hinsichtlich Festigkeit wie auch hinsichtlich Wärmeisolierfähigkeit bestimmten Anforderungen entsprechen sollten, ziemlich umständlich aufzubauen. Konnte man schon bei kleinen Türen auf Holz als mechanisch haltbares Befestigungselement für Scharniere und Schloß nicht verzichten, so war bei größeren Türen eine zusätzliche Versteifung erforderlich. Kühlschranktüren, bei denen die äußere und innere aus emaillierten Blechen bestehende Verkleidung gleichzeitig als Versteifung dient, hatten den Nachteil, daß sie sich durch nachträglichen Ausgleich von Spannungen leicht verziehen und dann nicht mehr dicht abschließen. Außerdem war das Anbringen der Isolierschicht bei gewölbten und runden Türen besonders schwierig, und der Zusammenbau der Einzelteile war kostspielig. The known plastic casting compounds have high thermal insulation properties is not characterized by such a high mechanical strength as it is loaded for larger ones Panels, e.g. B. refrigerator doors, would be required. There are also plastic molding compounds high mechanical strength known; but none of them point to isolation of refrigerators etc. have sufficient thermal insulation capacity. Therefore one was up to this point forced such panels, both in terms of strength as in terms of Thermal insulation should meet certain requirements, quite cumbersome build up. Even with small doors on wood, it was mechanically durable Fixing elements for the hinges and lock do not do without, as was the case with larger ones Doors require additional stiffening. Refrigerator doors where the outer and inner cladding consisting of enamelled sheets at the same time as Stiffening, had the disadvantage that they can be compensated by subsequent compensation easily warped by tension and then no longer seal tightly. aside from that it was particularly difficult to apply the insulating layer to curved and round doors, and the parts were costly to assemble.
Effindurigsgemäß wird eine Platte von hoher mechanischer Festigkeit undhoherWärmeisolierfähigkeit dadurch hergestellt, daß eine Gußmasse hoher Isolierfähigkeit mit einer Gußmasse hoher Festigkeit beim Gießen vereinigt wird. In accordance with its efficiency, a plate becomes high more mechanical Strength and high thermal insulation property produced by using a molding compound high insulation combined with a casting compound of high strength during casting will.
Dieses Verfahren kann nach einem weiteren Er findungsgedanken so ausgeführt werden, daß in der Gußform zunächst eine verhältnismäßig dünne Schicht der Gußmasse hoher Festigkeit eingegossen, sodann ein Gußkern aus Hplz o. dgl. von der Form der gewünschten Versteifungen eingelegt und nun die Gußmasse hoher lsolierfähigkeit eingegossen wird. Anschließend wird nach dem Erstarren der Masse der Kern entfernt und durch die nunmehr eingegossene Gußmasse hoher mechanischer Festigkeit ersetzt. This method can according to a further idea of the invention be carried out that in the mold initially a relatively thin layer the casting compound of high strength is poured in, then a casting core made of Hplz or the like the shape of the desired stiffeners and now the casting compound with high insulating properties is poured. The core is then removed after the mass has solidified and replaced by the now poured casting compound of high mechanical strength.
Nach einem weiteren Erfindungsgedanken kann die Gußmasse hoher Isolierfähigkeit als fertige Gußplatte in die vorher mit einer dünnen Schicht Kunststoff hoher Festigkeit ausgegossene Form eingelegt werden, wobei man am Rand und dort, wo zusätzliche Kern steifungen notwendig sind, Hohlräume läßt, die anschließend mit der Kunststoffmasse hoher Festigkeit ausgegossen werden. According to a further idea of the invention, the casting compound can have high insulating properties as a finished cast plate in the previously covered with a thin layer of high-strength plastic Poured form can be inserted, being on the edge and where there is additional core stiffeners are necessary, cavities can then with the plastic mass high strength can be poured.
Für das Verfahren sind geeignet alle schaumförmig erstarrenden in flüssigem Zustand Klebe-igenschaft aufweisenden Kunststoffe, die eine gute Isolierfähigkeit mit genügender Festigkeit verbinden Als besonders geeignet hat sich ein bekannter Schaumstoff erwiesen, der durch Mischer zweier Grundstoffe entstellt, von denen der eine durch ein Polyester und der andere durch Diisocyanat gebildet wird. Durch zahl des Mischungsverhältnisses zwischen den beiden Kemponenten kann man sowohl Schaumstoff mit hoher Isolierfähigkeit bei geringerer Festigkeit, als auch solchen mit hoher Festigkeit bei geringerer Isolierfähigkeit herstelltn. All foam-like solidifying in are suitable for the process liquid state plastics exhibiting adhesive properties, which have good insulating properties Connect with sufficient strength A well-known one has proven to be particularly suitable Foam proved to be disfigured by mixing two basic materials, one of which one is formed by a polyester and the other by diisocyanate. By The number of the mixing ratio between the two components can be both Foam with high insulation properties with lower strength, as well as such with high strength and lower insulating properties.
Soll die Platte eine Folienverkleidung erhalten, so kann erfindungsgemäß beim Gießen zunächst die beispielsweise als äußere Oberfläche dienende Folie in die Form eingepreßt werden, worauf das Gußverfahren, wie oben beschrieben, durchgeführt wird und alsdann vor dem Erstarren der Gußmasse die andere, beispielsweise als innere Oberfläche dienende Folie aufgelegt werden. Nach dem Erstarren des Keingusses kann die fertige Platte, z.B. eine Tür, aus der Form genommen werden. Eine zusätzliche Bearbeitung erübrigt sich. If the plate is to be given a foil cladding, according to the invention when casting, first the film serving as an outer surface in the mold are pressed in, whereupon the casting process, as described above, is carried out becomes and then before the solidification of the casting compound the other, for example as internal Surface serving foil are placed. After the casting has solidified, the finished panel, e.g. a door, can be removed from the mold. An additional Editing is unnecessary.
Es ergibt sich bei diesem \ erfahren eine vorzügliche Verankerung der beiden Isoliermassen, sowie eine tXute Verbindung der Folicn mit den Massen. With this experience, there is excellent anchoring of the two insulating masses, as well as a perfect connection of the foliage with the masses.
PATENTA N 5 p c u r.. PATENTA N 5 p c u r ..
I. Verfahren zur Herstellung sclbsttragender, wärmeisolierender Platten aus Kunststoffgußmassen, insbesondere für Kühlschranktüren, dadurch gekennzeichnet, daß eine Gußmasse hoher Isolierfähigkeit mit einer Gußmasse hoher mechanischer Festigkeit beim Gießen in der Gußform zu einem Stück vereinigt wird. I. Process for the manufacture of self-supporting, heat-insulating panels made of plastic casting compounds, in particular for refrigerator doors, characterized in that that a casting compound of high insulating capacity with a casting compound of high mechanical strength is combined into one piece during casting in the mold.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM3604A DE833048C (en) | 1950-05-26 | 1950-05-26 | Process for the production of self-supporting, heat-insulating panels from plastic casting compounds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM3604A DE833048C (en) | 1950-05-26 | 1950-05-26 | Process for the production of self-supporting, heat-insulating panels from plastic casting compounds |
Publications (1)
Publication Number | Publication Date |
---|---|
DE833048C true DE833048C (en) | 1952-03-03 |
Family
ID=7292256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM3604A Expired DE833048C (en) | 1950-05-26 | 1950-05-26 | Process for the production of self-supporting, heat-insulating panels from plastic casting compounds |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE833048C (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE962291C (en) * | 1953-01-09 | 1957-04-18 | Phoenix Rheinrohr Ag Vereinigt | Process for the production of resilient bodies from elastic organic materials |
DE974346C (en) * | 1951-10-04 | 1960-12-01 | Herberts & Co Gmbh Dr Kurt | Process for the production of insulating containers from foamed plastics |
DE1156224B (en) * | 1955-07-20 | 1963-10-24 | Electrolux Ab | Multi-part composable, convection-heated pressure-resistant mold for the production of thermally insulating containers from foamable plastics |
DE1205995B (en) * | 1957-03-14 | 1965-12-02 | Conch Int Methane Ltd | Heat-insulated container for storing low-boiling liquefied gases |
DE1267415B (en) * | 1959-03-26 | 1968-05-02 | Austin Motor Co Ltd | Foam padded seat and device for its manufacture |
DE3626984C1 (en) * | 1986-08-08 | 1988-01-14 | Grammer Sitzsysteme Gmbh | Process for producing a seat cushion or backrest cushion, in particular for a vehicle seat |
DE19820559A1 (en) * | 1998-05-08 | 1999-11-18 | Grammer Ag | Cushioned product molding process in which a dimensionally stable core is enclosed in a reactive foam cushioning part |
-
1950
- 1950-05-26 DE DEM3604A patent/DE833048C/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE974346C (en) * | 1951-10-04 | 1960-12-01 | Herberts & Co Gmbh Dr Kurt | Process for the production of insulating containers from foamed plastics |
DE962291C (en) * | 1953-01-09 | 1957-04-18 | Phoenix Rheinrohr Ag Vereinigt | Process for the production of resilient bodies from elastic organic materials |
DE1156224B (en) * | 1955-07-20 | 1963-10-24 | Electrolux Ab | Multi-part composable, convection-heated pressure-resistant mold for the production of thermally insulating containers from foamable plastics |
DE1205995B (en) * | 1957-03-14 | 1965-12-02 | Conch Int Methane Ltd | Heat-insulated container for storing low-boiling liquefied gases |
DE1267415B (en) * | 1959-03-26 | 1968-05-02 | Austin Motor Co Ltd | Foam padded seat and device for its manufacture |
DE3626984C1 (en) * | 1986-08-08 | 1988-01-14 | Grammer Sitzsysteme Gmbh | Process for producing a seat cushion or backrest cushion, in particular for a vehicle seat |
DE19820559A1 (en) * | 1998-05-08 | 1999-11-18 | Grammer Ag | Cushioned product molding process in which a dimensionally stable core is enclosed in a reactive foam cushioning part |
DE19820559C2 (en) * | 1998-05-08 | 2000-09-14 | Grammer Ag | Process for producing a molded article with a core and a cushion part |
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