SE430967B - Kontinuerligt forfarande for astadkommande av en skiva av skummat termoplastharts - Google Patents

Kontinuerligt forfarande for astadkommande av en skiva av skummat termoplastharts

Info

Publication number
SE430967B
SE430967B SE7908575A SE7908575A SE430967B SE 430967 B SE430967 B SE 430967B SE 7908575 A SE7908575 A SE 7908575A SE 7908575 A SE7908575 A SE 7908575A SE 430967 B SE430967 B SE 430967B
Authority
SE
Sweden
Prior art keywords
webs
sheet
sheets
foamed
astad
Prior art date
Application number
SE7908575A
Other languages
English (en)
Other versions
SE7908575L (sv
Inventor
Maio R Di
Original Assignee
Stirofilm Spa
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 Stirofilm Spa filed Critical Stirofilm Spa
Publication of SE7908575L publication Critical patent/SE7908575L/sv
Publication of SE430967B publication Critical patent/SE430967B/sv

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/03—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers with respect to the orientation of features
    • 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
    • B29C44/08—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 using several expanding or moulding 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
    • 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
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45—Joining of substantially the whole surface of the 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
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/727—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 structure of the material of the parts to be joined being porous, e.g. foam
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/04—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the partial melting of at least one layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/32—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed at least two layers being foamed and next to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72327—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • 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
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0088—Expanding, swelling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/022—Foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/72—Density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/08—Dimensions, e.g. volume
    • B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
    • B32B2309/105—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Sealing Material Composition (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Description

10 15 20 25 30 35 7908575-9 2 Förfarandet enligt uppfinningen eliminerar också nödvän- digheten av att torka de framställda arken, varigenom kostnaderna reduceras och produktionshastigheten ökar.
Uppfinningen skall i det följande närmare beskri- vas under hänvisning till bifogade ritning, som visar ett utföringsexempel. Fig 1 visar schematiskt från si- dan en apparat enligt föreliggande uppfinning. Fig 2 vi- sar apparaten i tvärsektion och fig 3 åskådliggör i tvärsektion en resulterande laminerad produkt.
På ritningen visas en ugn, som användes för sam- tidig upphettning av två eller flera ark 2 av expande- rat termoplastmaterial, vilka skall förbindas med varandra, en kalibrerings- och avkylningsstation 3 för arken efter förbindning med varandra samt en station 4 för efterföljande tryckning och skärning av produkten till skivor.
Ugnen l består av en kammare 5, i vilken bär- och transportorgan för varje ark är monterade, varvid trans- portorganen tillåter kontinuerlig förskjutning av varje enskilt ark 2 genom ugnen. Dessa transportorgan kan, så- som visas, ha formen av rullar 6, vilka bildar banor för arken. Alternativt kan transportorganen ha formen av ändlösa band eller kedjor eller utgöras av andra lämpliga anordningar, som kan transportera ark 2 in- dividuellt och separat. s Bär- och transportorganen 6 är inriktade med mot- svarande inloppsöppningar 7 i ugnens l ena vägg. Arken 2 sprutas och torkas och lindas därpå på rullar R. Arken drages från rullarna R och inkommer i ugnen genom öpp- ningarna 7. Såsom framgår av ritningen är dessa öpp- ningar 7 utformade i en av ugnens 1 ändväggar. 7 Det skall emellertid noteras att arken av expanderat material kan matas antingen horisontellt eller vertikalt utan ofördelaktig påverkan därav. Styrorgan 6 för arken är därför monterade på motsvarande sätt.f I båda fallen är i väggen, som befinner sig mitt- 10 15 20 25 30 35 79085 75-9 3 emot den vägg, vari inloppsöppningarna 7 är utformade, en enda utloppsöppning 8 anordnad för samtliga ark 2.
I ugnen 2 är åtminstone ett par justerbara styrrullar 9 monterade intill utloppsöppningen 8 för att bringa ar- ken 2 att konvergera och närma sig varandra för att placeras på varandra.
För upphettning av arken av sprutat, expanderat material 2 då de passerar ugnen l är upphettningsorgan 10, såsom elektriska värmeelement, placerade mellan bär- och transportorganen 6 för arken 2, vilka värmeelement håller ugnskammaren vid en förutbestämd temperatur, för att sålunda åstadkomma en förutbestämd expansion av varje enskilt ark. Det inses, att expansionen av arken medför en reducering av deras densitet.
I området intill ugnens l utlopp 8, där arken 2' konvergerar mot paret av styrrullar 9 är ytterligare värmeelement ll anordnade för upphettning av de motsatta_ ytpartierna hos intillvarandra belägna ark till deras smälttemperatur. Genom dylik smältning bringas intill varandra belägna ark att vidhäfta varandra eller hop- smälta, då de passerar mellan rullarna 9. Detta sker oberoende av om arkens ytor är släta eller utsatts för en föregående, mekanisk förbehandling.
Under sin passage genom ugnen 1 kan arken 2 be- handlas vid varje lämplig, önskad temperatur under en förutbestämd tidsperiod. Under sådan behandling kan de expanderas ytterligare, varigenom en reducering av ar- kens densitet till ett önskat värde möjliggöres. Efter den ytterligare expansionen utsättes de för hopfästning avsedda ytorna för verkan av värmeelementen ll, så att åtminstone deras ytområden upphettas till sin smälttem- peratur. Arken hopsvetsas sålunda då de passerar mellan styrrullarna 9 och bildar ett enda laminat 20 med ett antal skikt, motsvarande antalet använda ark, varvid lami- natets tjocklek är lika med summan av de använda arkens tjocklek och laminatets densitet är beroende av de an- vända arkens densitet. 10 15 20 25 30 35 7908575-9 4 _Beroende på naturen av termoplastmaterialet, av vilket arken är framställda, kan temperaturen i ugnen variera mellan l00°C och 200°C och den hastighet, varmed arken transporteras genom ugnen, kan vara mellan 4 och 15 m. Genom användning av dessa parametrar är det möj- ligt att åstadkomma en densitetsreducering från 60-70 gr/l i utgångsarken till 22 gr/1 i den färdiga produkten.
Sättet och apparaten enligt uppfinningen tillåter sålunda en avsevärd ökning av utgångsarkets volym utan att några större tekniska svårigheter uppstår.
Det sålunda framställda laminatet transporteras sedan till och genom en kalibrerings- och kylningssta- tion 3, i vilken den färdiga produktens fysikaliska egenskaper fixeras. Denna station 3 innefattar såsom framgår av fig 2 två satser justerbara rullar 12, som är vända mot varandra för att däremellan bilda en styr- bana längs vilken laminatet 20 måste passera. Under denna passage mellan rullarna kyles laminatet medelst exempelvis luft, som inkommer genom öppningar 13, vilka är anordnade ovanför och under rullarna 12, och medelst vatten. I Efter kylning är produkten färdig för att utsättas för efterföljande tryckning och skärning till önskad storlek. Detta sker i stationen 4.
Under användning av ovan beskrivna förfarande är det möjligt att forma skivor av varje sprutat, expande- rat termoplastmaterial, varvid arken, varav skivan är framställd, kan innefatta önskade tillsatser som mot brand motståndskraftiga material och färgmedel. Om ar- ken är framställda av fibröst material kan fibrerna vara orienterade eller godtyckligt fördelade.
Under förfarandet är det också möjligt att på den färdiga produktens ena eller båda ytor applicera plast- laminat eller vanligt eller bituminöst papper för att hos den färdiga produkten åstadkomma önskad struktur och önskade egenskaper. 7908575-9 5 Enligt uppfinningen kan sålunda på ett enkelt och billigt sätt åstadkommas en laminerad produkt, som har önskad densitet, värmeisoleringsförmåga, mekanisk håll- fasthet, låg fuktabsorbering, avsevärt motstånd mot diffusion av vattenånga därigenom och dimensionsstabi- litet, som är ekvivalent med liknande produkters, vil- ka erhållits direkt genom sprutning av en konstruktion med ett skikt.

Claims (1)

10 15 7908575-9 PATENTKRAV Kontinuerligt förfarande för àstadkommande av en skiva (20) av skummat termoplastharts genom att två eller flera kontinuerliga banor (2') av det skummade termoplasthartset förenas under tryck, k ä n n e t e c k- n a t därav, att kontinuerliga banor av till en del skummat termoplastharts (2) bringas att passera en upp- hettningszon (5), vari de enskilda banorna homogent upphettas till en temperatur, som understiger materia- lets smälttemperatur men är tillräcklig för àstadkomman- de av en ytterligare skumning till ett slutligt, förut- bestämt materialdensitetsvärde, och att därefter de på detta sätt skummade banorna upphettas_till materia- lets smälttemperatur utöver ytan pà de sidor, som skall förenas med varandra och därför icke utöver de ytor, som på grund av förbindningen av banorna med varandra kommer att bilda skivans utsidor, och att de på detta sätt upphettade banorna placeras på varandra och hop- pressas för åstadkommande av en fullständig hopsvets- ning av de enskilda arken och framställning av en skiva (20) med homogen struktur.
SE7908575A 1978-12-12 1979-10-17 Kontinuerligt forfarande for astadkommande av en skiva av skummat termoplastharts SE430967B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT528278A IT1104292B (it) 1978-12-12 1978-12-12 Procedimento per l'accoppiamento di foglie di resina termoplastica espansa,e pannello composito ottenuto con detto procedimento

Publications (2)

Publication Number Publication Date
SE7908575L SE7908575L (sv) 1980-06-13
SE430967B true SE430967B (sv) 1983-12-27

Family

ID=11120142

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Application Number Title Priority Date Filing Date
SE7908575A SE430967B (sv) 1978-12-12 1979-10-17 Kontinuerligt forfarande for astadkommande av en skiva av skummat termoplastharts

Country Status (13)

Country Link
AT (1) AT367348B (sv)
BE (1) BE879571A (sv)
CH (1) CH635776A5 (sv)
DE (1) DE2943588C2 (sv)
DK (1) DK150978C (sv)
ES (1) ES485983A1 (sv)
FR (1) FR2443928A1 (sv)
GB (1) GB2044672B (sv)
GR (1) GR66671B (sv)
IT (1) IT1104292B (sv)
NL (1) NL185757C (sv)
NO (1) NO155652C (sv)
SE (1) SE430967B (sv)

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DE19755940A1 (de) * 1997-12-16 1999-06-24 Armstrong Insulation Products Verfahren zur Herstellung einer thermisch isolierenden Plattenware
US9296126B2 (en) 2003-05-17 2016-03-29 Microgreen Polymers, Inc. Deep drawn microcellularly foamed polymeric containers made via solid-state gas impregnation thermoforming
EP2160290B1 (en) 2007-01-17 2011-12-14 Microgreen Polymers, Inc. Multi-layer foamed polymeric object
US8568125B2 (en) 2008-04-14 2013-10-29 Microgreen Polymers Inc. Roll fed flotation/impingement air ovens and related thermoforming systems for corrugation-free heating and expanding of gas impregnated thermoplastic webs
GB2474431B (en) * 2009-10-13 2012-10-31 Gurit Uk Ltd Production of extruded foam
EP2560818B1 (en) 2010-04-19 2015-08-26 Microgreen Polymers, Inc. A method for joining thermoplastic polymer material
EP2668033A4 (en) * 2011-01-27 2014-10-08 Microgreen Polymers Inc MICROSTRUCTURE FOR FUSION-LINKED THERMOPLASTIC POLYMER MATERIAL, AND ASSOCIATED METHODS
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IT1104292B (it) 1985-10-21
GB2044672B (en) 1983-04-20
CH635776A5 (it) 1983-04-29
DE2943588A1 (de) 1980-06-26
SE7908575L (sv) 1980-06-13
NL7908336A (nl) 1980-06-16
DE2943588C2 (de) 1984-10-18
DK150978C (da) 1988-02-22
NL185757C (nl) 1990-07-16
FR2443928B1 (sv) 1984-04-27
NO793328L (no) 1980-06-13
ATA675679A (de) 1981-11-15
GB2044672A (en) 1980-10-22
BE879571A (fr) 1980-02-15
DK435579A (da) 1980-06-13
FR2443928A1 (fr) 1980-07-11
NO155652C (no) 1987-05-06
GR66671B (sv) 1981-04-08
AT367348B (de) 1982-06-25
IT7805282A0 (it) 1978-12-12
ES485983A1 (es) 1980-09-01
NO155652B (no) 1986-01-26
DK150978B (da) 1987-10-05

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