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DE2340166A1 - FOAM COMPOSITE BODY - Google Patents

FOAM COMPOSITE BODY

Info

Publication number
DE2340166A1
DE2340166A1 DE19732340166 DE2340166A DE2340166A1 DE 2340166 A1 DE2340166 A1 DE 2340166A1 DE 19732340166 DE19732340166 DE 19732340166 DE 2340166 A DE2340166 A DE 2340166A DE 2340166 A1 DE2340166 A1 DE 2340166A1
Authority
DE
Germany
Prior art keywords
foam
cover layer
outer cover
composite
holes
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.)
Pending
Application number
DE19732340166
Other languages
German (de)
Inventor
Martin S Bloom
Peter Galloway
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of DE2340166A1 publication Critical patent/DE2340166A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34Auxiliary operations
    • B29C44/58Moulds
    • B29C44/588Moulds with means for venting, e.g. releasing foaming gas
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/32Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
    • B29C44/326Joining the preformed parts, e.g. to make flat or profiled sandwich laminates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00Flat articles, e.g. films or sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00Layered products

Landscapes

  • Laminated Bodies (AREA)

Description

PATENTANWALTS BÜROPATENT AGENCY OFFICE I IEDTKE M DÜNUNG " IVlNNEI IEDTKE M DÜNUNG "IVlNNE

TEL. (0811) 539653-56 TELEX: 524845 tipat CABLE ADDRESS: Germaniapatent MünchenTEL. (0811) 539653-56 TELEX: 524845 tipat CABLE ADDRESS: Germaniapatent Munich

8000 München 28000 Munich 2

Bavariaring4 ö. August 1973 Postfach 202403Bavariaring 4 August 1973 P.O. Box 202403

B 5543B 5543

Imperial Chemical Industries Ltd., ■ London, GroßbritannienImperial Chemical Industries Ltd., ■ London, Great Britain

Schaumstoff-VerbundschichtkörperFoam composite laminate

Die Erfindung betrifft Schaumstoff-Verbundschichtkörper aus einem starren synthetischen Schaumstoffkern, der durch in situ Reaktion und Schäumung einer Mischung schaumbildender Chemikalien zwischen zwei äußeren, nicht notwendigerweise gleichen Deckschichten eingebettet ist. Solche Schaumstoff-Verbundschichtkörper sind bekannt; Verfahren, Maschinen und Stoffe zu ihrer Herstellung wurden in den britischen Patentschriften 997 086, 1 098 472, 1 098 473, 1 113 959, 1 127 600 und 1 136 046 sowie in den britischen Patentschriften 1 023 164, 1 053 192 und 1 135 483, die den US-Patentschriften 3 369 065, 3 537 929 bzw. 3 417 168 entsprechen, vorgeschlagen, um nur einige wenige zu nennen.The invention relates to composite foam bodies made of a rigid synthetic foam core that goes through in situ reaction and foaming of a mixture of foaming chemicals between two external ones, not necessarily the same Cover layers is embedded. Such composite foam bodies are known; The processes, machines and materials for their manufacture are described in British patents 997 086, 1,098,472, 1,098,473, 1,113,959, 1,127,600 and 1,136,046 and in British patents 1,023,164, 1,053,192 and 1,135,483, which correspond to U.S. Patents 3,369,065, 3,537,929 and 3,417,168, respectively, are suggested to cite only a few to name.

409812/1098409812/1098

Deutsche Bank (München) KIo. 51/61070 Dresdner Bank (München) Kto. 3939844 Postscheck (München) Kto. 67043-804Deutsche Bank (Munich) KIo. 51/61070 Dresdner Bank (Munich) Account 3939844 Postscheck (Munich) Account 67043-804

Bei dem bekannten Verfahren müssen eine oder beide
Deckschichten an dem wachsenden oder gewachsenen Schaum haften, während dieser noch klebrig ist. Wenn die Deckschicht(en) gasundurchlässig ist, kann der Einschluß von Luft oder anderen
Gasen zwischen dem Schaum und der Deckschicht an der Oberfläche des Verbundschichtkörpers zu Bereichen führen, wo der Schaum
und die Deckschicht keinen Kontakt miteinander haben und infolgedessen nicht aneinander haften.
In the known method, one or both
Cover layers adhere to the growing or grown foam while it is still sticky. If the cover layer (s) is impermeable to gas, the inclusion of air or other
Gases between the foam and the cover layer on the surface of the composite laminate lead to areas where the foam
and the cover layer do not have contact with each other and consequently do not adhere to each other.

Es wurde nun gefunden, daß dieser Mangel dadurch beseitigt werden kann, daß eine Mehrzahl von sehr kleinen Löchern in der Deckschicht bzw. den Deckschichten vorgesehen wird, die den
Durchtritt von Luft oder anderen Gasen, die sonst eingeschlossen werden würden, aus dem Schaum durch die Deckschichten zulassen und so die haftfreien Bereiche beseitigen. Die Deckschicht(en) können mit Lochungen hergestellt werden oder die Löcher können in den Deckschichten gebildet werden, wenn diese der Beschichtungsstufe zugeführt werden.
It has now been found that this deficiency can be eliminated in that a plurality of very small holes is provided in the cover layer or the cover layers, which the
Allow air or other gases from the foam, which would otherwise be trapped, to pass through the cover layers and thus eliminate the non-stick areas. The cover layer (s) can be produced with perforations or the holes can be formed in the cover layers when these are fed to the coating step.

Der Abstand der Löcher hängt von vielen variablen
Größen ab (wie zum Beispiel Dicke des Schaums, seine chemische Zusammensetzung und Temperatur). Die Löcher können beispielsweise nur etwa zweieinhalb Zentimeter voneinander entfernt sein;
gewöhnlich genügt es aber, wenn sie etwa fünfzehn Zentimeter
voneinander entfernt sind.
The spacing of the holes depends on many variables
Sizes (such as the thickness of the foam, its chemical composition and temperature). For example, the holes can only be about two and a half centimeters apart;
Usually, however, it is sufficient if they are about six inches
are distant from each other.

Die vorliegende Erfindung schafft demgemäß einen Schaumstoff-Verbundschichtkörper der beschriebenen Art, bei dem wenigsten eine äußere Deckschicht des Verbundschichtkörpers mit einerThe present invention accordingly provides a foam composite sheet of the type described, at least one outer cover layer of the composite laminate body with a

Mehrzahl von sehr kleinen Löchern versehen ist, die den DurchtrittPlurality of very small holes is provided which make the passage

409812/1098409812/1098

von Luft oder anderen Gasen aus dem Schaum durch die Deckschicht gestatten.of air or other gases from the foam through the top layer allow.

Die Erfindung schafft ferner ein Verfahren zur Herstellung eines Schaumstoff-Verbundschichtkörpers der beschriebenen Art, bei dem wenigstens eine Deckschicht des Verbundschichtkörpers mit einer Mehrzahl von sehr kleinen Löchern versehen wird, die den Durchtritt von Luft oder anderen Gasen aus dem Schaum durch die Deckschicht gestatten.The invention also provides a method of making a foam composite sheet of the type described Type in which at least one cover layer of the composite laminated body has a plurality of very small holes is provided which allow the passage of air or other gases from the foam through the cover layer.

Die Erfindung eignet sich für alle Arten von Deckschichten, einschließlich (nur als Beispiel) Papier, Pappe, Kunststoff-Folien und Metallfolien (zum Beispiel Aluminiumfolien}, mehrschichtige Deckschichten aus mehreren der vorerwähnten Deckschichten, die mit Polyäthylen, Polypropylen oder anderen Bindemitteln verbunden sind, und andere geeignete Kombinationen aus Papier, Pappe und Folien (aus Metall und Kunststoff).The invention is suitable for all types of facings, including (as an example only) paper, cardboard, Plastic foils and metal foils (for example aluminum foils), multilayer cover layers made from several of the aforementioned Facings bonded with polyethylene, polypropylene or other binders, and other suitable ones Combinations of paper, cardboard and foils (made of metal and plastic).

409812/1098409812/1098

Claims (3)

Pat ent an sprü ehePat ent spray before 1. Schaumstoff-Verbundschichtkörper aus einem zwischen zwei äußeren Deckschichten eingebetteten starren Schaumstoffkern, dadurch gekennzeichnet, daß wenigstens eine äußere Deckschicht des Verbundschichtkörpers mit'einer Mehrzahl von sehr kleinen Löchern versehen ist, die den Durchtritt von Luft oder anderen Gasen aus dem Schaum durch die Deckschicht gestatten.1. Foam composite body made of an intermediate two outer cover layers embedded rigid foam core, characterized in that at least one outer cover layer of the composite laminated body is provided with a plurality of very small holes which allow air or allow other gases from the foam through the cover layer. 2. Verfahren zur Herstellung eines Schaumstoff-Verbundschichtkörpers aus einem zwischen zwei äußeren Deckschichten eingebetteten starren Schaumstoffkern, dadurch gekennzeichnet, daß wenigstens eine äußere Deckschicht des Verbundschichtkörpers mit mehreren sehr kleinen öffnungen versehen wird, die den Durchtritt von Luft oder anderen Gasen aus dem Schaum durch die Deckschicht gestatten.2. A method of making a foam composite laminate of a rigid foam core embedded between two outer cover layers, characterized in that that at least one outer cover layer of the composite laminate body is provided with a plurality of very small openings that allow the passage allow air or other gases from the foam through the cover layer. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß eine Deckschicht mit vorgeformten Löchern eingesetzt wird.3. The method according to claim 2, characterized in that a cover layer with preformed holes is used. U. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Deckschicht während ihrer Zuführung zu der Beschichtungsstufe mit Löchern versehen wird.U. The method according to claim 2, characterized in that the top layer during its supply to the coating stage is provided with holes. 409812/1098409812/1098
DE19732340166 1972-08-18 1973-08-08 FOAM COMPOSITE BODY Pending DE2340166A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3862372A GB1376038A (en) 1972-08-18 1972-08-18 Foamed plastics laminates

Publications (1)

Publication Number Publication Date
DE2340166A1 true DE2340166A1 (en) 1974-03-21

Family

ID=10404650

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732340166 Pending DE2340166A1 (en) 1972-08-18 1973-08-08 FOAM COMPOSITE BODY

Country Status (10)

Country Link
JP (1) JPS49124186A (en)
BE (1) BE803438A (en)
CH (1) CH577889A5 (en)
DE (1) DE2340166A1 (en)
FR (1) FR2196245B3 (en)
GB (1) GB1376038A (en)
IE (1) IE37953B1 (en)
IT (1) IT993681B (en)
NL (1) NL7311357A (en)
SE (1) SE7311193L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2804143A1 (en) * 1978-01-31 1979-08-02 Pierre Wernli Laminated serving tray with slip-proof surface - comprising several superposed melamine-impregnated or -coated sheets of paper plus top ply of PVC-coated fabric

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7930401U1 (en) * 1979-09-11 1980-03-13 N.V. Raychem S.A., Kessel-Lo (Belgien) Cable sleeve insert
DE3168410D1 (en) * 1980-02-08 1985-03-07 Raychem Sa Nv Recoverable closure assembly
JPS5716517A (en) * 1980-06-02 1982-01-28 Raychem Corp Heat recover type blocking assembly and method of blocking same
NZ570030A (en) 2006-01-30 2011-07-29 Kingspan Holdings Irl Ltd A board with two gas impermeable perforated facings and a thermal conductivity of less than 0.02W/m.K
US20090107623A1 (en) * 2007-10-31 2009-04-30 Davidson Et Al. Continuous venting of a covering sheet for an in-situ lamination process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2804143A1 (en) * 1978-01-31 1979-08-02 Pierre Wernli Laminated serving tray with slip-proof surface - comprising several superposed melamine-impregnated or -coated sheets of paper plus top ply of PVC-coated fabric

Also Published As

Publication number Publication date
NL7311357A (en) 1974-02-20
GB1376038A (en) 1974-12-04
IE37953L (en) 1974-02-18
IE37953B1 (en) 1977-11-23
FR2196245B3 (en) 1976-07-30
JPS49124186A (en) 1974-11-27
SE7311193L (en) 1974-02-19
IT993681B (en) 1975-09-30
BE803438A (en) 1974-02-11
FR2196245A1 (en) 1974-03-15
CH577889A5 (en) 1976-07-30

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