[go: up one dir, main page]

IT1270979B - Procedimento e apparecchiatura per la produzione in continuo di schiume poliuretaniche in blocchi - Google Patents

Procedimento e apparecchiatura per la produzione in continuo di schiume poliuretaniche in blocchi

Info

Publication number
IT1270979B
IT1270979B ITMI932090A ITMI932090A IT1270979B IT 1270979 B IT1270979 B IT 1270979B IT MI932090 A ITMI932090 A IT MI932090A IT MI932090 A ITMI932090 A IT MI932090A IT 1270979 B IT1270979 B IT 1270979B
Authority
IT
Italy
Prior art keywords
blocks
equipment
polyurethane foam
continuous production
expansion
Prior art date
Application number
ITMI932090A
Other languages
English (en)
Inventor
Carlo Fiorentini
Anthony Charles Murr Griffiths
Original Assignee
Afros 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 Afros Spa filed Critical Afros Spa
Publication of ITMI932090A0 publication Critical patent/ITMI932090A0/it
Priority to ITMI932090A priority Critical patent/IT1270979B/it
Priority to NO942522A priority patent/NO309077B1/no
Priority to TW083106078A priority patent/TW261577B/zh
Priority to FI943215A priority patent/FI943215L/fi
Priority to CA002127475A priority patent/CA2127475A1/en
Priority to PL94304196A priority patent/PL304196A1/xx
Priority to US08/271,918 priority patent/US5665287A/en
Priority to AT94110737T priority patent/ATE152956T1/de
Priority to DE69403170T priority patent/DE69403170T2/de
Priority to ES94110737T priority patent/ES2102734T3/es
Priority to EP94110737A priority patent/EP0645226B1/en
Priority to EP96120468A priority patent/EP0770466A3/en
Priority to KR1019940016567A priority patent/KR960013632A/ko
Priority to DK94110737.7T priority patent/DK0645226T3/da
Priority to DE9411804U priority patent/DE9411804U1/de
Priority to JP6160308A priority patent/JPH07164454A/ja
Priority to AU67464/94A priority patent/AU676913B2/en
Priority to CN94107866A priority patent/CN1054332C/zh
Publication of ITMI932090A1 publication Critical patent/ITMI932090A1/it
Priority to US08/480,241 priority patent/US5629027A/en
Priority to US08/477,324 priority patent/US5639483A/en
Priority to US08/480,242 priority patent/US5620710A/en
Application granted granted Critical
Publication of IT1270979B publication Critical patent/IT1270979B/it
Priority to GR970402016T priority patent/GR3024369T3/el
Priority to US09/291,087 priority patent/USRE37012E1/en
Priority to US09/291,086 priority patent/USRE37115E1/en
Priority to US09/291,088 priority patent/USRE37075E1/en

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
    • B29C44/34—Auxiliary operations
    • B29C44/3469—Cell or pore nucleation
    • B29C44/348—Cell or pore nucleation by regulating the temperature and/or the pressure, e.g. suppression of foaming until the pressure is rapidly decreased
    • 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
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/461—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length dispensing apparatus, e.g. dispensing foaming resin over the whole width of the moving surface
    • B29C44/462—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length dispensing apparatus, e.g. dispensing foaming resin over the whole width of the moving surface provided with pre-foaming devices
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Polyurethanes Or Polyureas (AREA)
ITMI932090A 1993-07-14 1993-09-30 Procedimento e apparecchiatura per la produzione in continuo di schiume poliuretaniche in blocchi IT1270979B (it)

Priority Applications (25)

Application Number Priority Date Filing Date Title
ITMI932090A IT1270979B (it) 1993-09-30 1993-09-30 Procedimento e apparecchiatura per la produzione in continuo di schiume poliuretaniche in blocchi
NO942522A NO309077B1 (no) 1993-07-14 1994-07-04 FremgangsmÕte og system for kontinuerlig tilvirkning av polyuretanskumblokker
TW083106078A TW261577B (it) 1993-07-14 1994-07-04
FI943215A FI943215L (fi) 1993-07-14 1994-07-05 Vaahdotusmenetelmä ja -järjestelmä vaahdotettua polyuretaania olevien harkkojen valmistamiseksi
CA002127475A CA2127475A1 (en) 1993-07-14 1994-07-06 Froth process and system for continuous manufacture of polyurethane foam slab-stocks
PL94304196A PL304196A1 (en) 1993-07-14 1994-07-08 Method of continuously making foamed polymer boards and apparatus therefor
US08/271,918 US5665287A (en) 1993-07-14 1994-07-08 Froth process for continous manufacture of polyurethane foam slab-stocks
EP96120468A EP0770466A3 (en) 1993-07-14 1994-07-11 Frothing process and system for continous manufacture of polyurethane foam slab-stock
DK94110737.7T DK0645226T3 (da) 1993-07-14 1994-07-11 Skumningsfremgangsmåde og system til kontinuerlig fremstilling af polyurethan-skumstofblokke
DE69403170T DE69403170T2 (de) 1993-07-14 1994-07-11 Schlagverfahren und System zur kontinuierlichen Herstellung von Polyurethanschaumstoffblocken
ES94110737T ES2102734T3 (es) 1993-07-14 1994-07-11 Procedimiento de espumacion y sistema para la fabricacion de bloques de espuma de poliuretano en regimen continuo.
EP94110737A EP0645226B1 (en) 1993-07-14 1994-07-11 Froth process and system for continuous manufacture of polyurethane foam slab-stocks
AT94110737T ATE152956T1 (de) 1993-07-14 1994-07-11 Schlagverfahren und system zur kontinuierlichen herstellung von polyurethanschaumstoffblocken
KR1019940016567A KR960013632A (ko) 1993-07-14 1994-07-11 폴리우레탄 발포성 슬랩-스톡의 연속적 제조를 위한 발포성 공정과 그 시스템
DE9411804U DE9411804U1 (de) 1993-07-14 1994-07-12 Vorrichtung zur Herstellung von Polymer-Schaumstoffblöcken
JP6160308A JPH07164454A (ja) 1993-07-14 1994-07-12 ポリウレタンスラブストック発泡体の連続製造用の方法およびその装置
AU67464/94A AU676913B2 (en) 1993-07-14 1994-07-13 Froth process and system for continuous manufacture of polyurethane foam slab-stocks
CN94107866A CN1054332C (zh) 1993-07-14 1994-07-14 用于连续生产聚氨酯泡沫板材的方法和设备
US08/480,241 US5629027A (en) 1993-07-14 1995-06-07 Froth system for continuous manufacture of polyurethane foam slab-stocks
US08/480,242 US5620710A (en) 1993-07-14 1995-06-07 Froth system for continuous manufacture of polyurethane foam slab-stocks
US08/477,324 US5639483A (en) 1993-07-14 1995-06-07 Froth system for continuous manufacture of polyurethane foam slab-stocks
GR970402016T GR3024369T3 (en) 1993-07-14 1997-08-06 Froth process and system for continuous manufacture of polyurethane foam slab-stocks.
US09/291,087 USRE37012E1 (en) 1993-07-14 1999-04-14 Froth system for continuous manufacture of polyurethane foam slab-stocks
US09/291,086 USRE37115E1 (en) 1993-07-14 1999-04-14 Froth system for continuous manufacture of polyurethane foam slab-stocks
US09/291,088 USRE37075E1 (en) 1993-07-14 1999-04-14 Froth system for continuous manufacture of polyurethane foam slab-stocks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI932090A IT1270979B (it) 1993-09-30 1993-09-30 Procedimento e apparecchiatura per la produzione in continuo di schiume poliuretaniche in blocchi

Publications (3)

Publication Number Publication Date
ITMI932090A0 ITMI932090A0 (it) 1993-09-30
ITMI932090A1 ITMI932090A1 (it) 1995-03-30
IT1270979B true IT1270979B (it) 1997-05-26

Family

ID=11366966

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI932090A IT1270979B (it) 1993-07-14 1993-09-30 Procedimento e apparecchiatura per la produzione in continuo di schiume poliuretaniche in blocchi

Country Status (2)

Country Link
US (5) US5629027A (it)
IT (1) IT1270979B (it)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9509776A (pt) * 1994-11-28 1997-09-30 Bayer Ag Processo e dispositivo para produzir espuma usando dióxide de carbono dissolvido sob pressão
DE19620991A1 (de) * 1996-05-24 1997-11-27 Hennecke Gmbh Verfahren und Vorrichtung zur Schaumherstellung mittels unter Druck gelöstem Kohlendioxid
DE19622742C1 (de) * 1996-06-07 1998-03-12 Hennecke Gmbh Verfahren zur Schaumherstellung mittels unter Druck gelöstem Kohlendioxid
EP0900811A1 (de) * 1997-09-06 1999-03-10 Th. Goldschmidt AG Verwendung von cyclischen organischen Carbonaten bei der Produktion von Polyurethanschäumen
US5801210A (en) * 1997-10-29 1998-09-01 Bayer Corporation Method and apparatus for the production of essentially void free foams
TW592813B (en) * 2001-08-15 2004-06-21 Dow Global Technologies Inc Process to manufacture polyurethane products
CN1643019A (zh) * 2002-03-14 2005-07-20 L&P财产管理公司 燃烧改进聚氨酯泡沫体
US6653359B2 (en) 2002-04-26 2003-11-25 Brian L. Hilker Fire retardant silicone surfactants for use in inert gas blown polyurethane foams
DE10311768A1 (de) * 2003-03-18 2004-09-30 Hennecke Gmbh Verfahren zur Herstellung von Polyurethan-Schaumstoffen
US6797736B1 (en) * 2003-03-19 2004-09-28 Basf Corporation Method of forming high resilience slabstock polyurethane foam
US6784218B1 (en) 2003-03-19 2004-08-31 Basf Corporation Method of forming high resilience slabstock polyurethane foam displaying latex-like characteristics
US20050038132A1 (en) * 2003-03-19 2005-02-17 Raghuram Gummaraju Composition for forming a foamed article and an article of furniture having the foamed article disposed therein
DE102005005151A1 (de) * 2005-02-04 2006-08-10 Hennecke Gmbh Verfahren und Vorrichtung zur Herstellung von Polyurethan-Blockschaum
BRPI0607377A2 (pt) 2005-02-25 2010-03-23 Nova Chem Inc composiÇço de cimento de baixo peso, leito de estrada, artigo de construÇço painel compàsito, estrutura de concreto isolada, mÉtodo de fabricar um artigo de composiÇço de cimento de baixo peso, artigo de concreto de baixo peso e unidade estrutural de baixo peso
US8752348B2 (en) * 2005-02-25 2014-06-17 Syntheon Inc. Composite pre-formed construction articles
BRPI0607914A2 (pt) * 2005-02-25 2010-03-23 Nova Chem Inc painel de edificaÇço compàsito, mÉtodo para construir uma edificaÇço, edificaÇço, mÉtodo para fazer negàcio entre um fabricante de painel de edificaÇço compàsito e um cliente, e, caibro de armaÇço
MX2007011640A (es) * 2005-03-22 2008-01-18 Nova Chem Inc Composiciones de concreto de peso ligero.
US7677009B2 (en) * 2007-02-02 2010-03-16 Nova Chemicals Inc. Roof truss system
ITPS20070011A1 (it) * 2007-03-08 2008-09-09 Angelo Candiracci Procedimento e dispositivo per la produzione di blocchi di polistirolo espanso
DE102007020095A1 (de) * 2007-04-26 2008-10-30 Nordson Corporation, Westlake Vorrichtung und Verfahren zum Schaumauftrag auf Substrate mit großer Breite
US8048219B2 (en) 2007-09-20 2011-11-01 Nova Chemicals Inc. Method of placing concrete
EP2216156A1 (de) * 2009-02-05 2010-08-11 Bayer MaterialScience AG Hochdruckvorrichtung
CN106273190B (zh) * 2016-08-15 2018-08-07 浙江川洋新材料股份有限公司 底纸循环利用的发泡机
DE102020104520A1 (de) 2020-02-20 2021-08-26 Stahl- und Metallbau Ihnen GmbH & Co. KG Verfahren zum Herstellen eines Bauteils mit einem Kern aus geschäumtem Isoliermaterial
DE202020006010U1 (de) 2020-02-20 2024-03-11 Stahl- und Metallbau Ihnen GmbH & Co. KG Vorrichtung zum Herstellen eines Bauteils mit einem Kern aus geschäumtem Isoliermaterial
US12226791B2 (en) 2022-08-05 2025-02-18 Graco Minnesota Inc. Dispenser with air mixing

Family Cites Families (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE61613C (de) * WILSON MANUFACTURING COMPANY INCORPORATED in Minnesota, V. St. A Vo-richtung zur Rettung aus Feuersgefahr
US2774106A (en) * 1952-12-17 1956-12-18 Us Rubber Co Method of and apparatus for forming a sheet of latex foam
GB904003A (en) * 1958-02-06 1962-08-22 Dunlop Rubber Co Method and apparatus for the production of cellular synthetic rubber
NL240966A (it) * 1958-07-11
US3181199A (en) * 1961-12-07 1965-05-04 Allied Chem Froth applicator
FR1524032A (fr) * 1963-05-03 1968-05-10 Bayer Ag Procédé de fabrication de pièces moulées en matières synthétiques à l'état de mousse
DE1504091A1 (de) * 1963-07-24 1969-07-03 Continental Gummi Werke Ag Vorrichtung und Verfahren zur Herstellung von Kunststoffschaeumen auf der Basis von Polyurethanen in Blockform
US3660548A (en) * 1963-11-06 1972-05-02 Toyo Tire & Rubber Co Method for continuously producing foamed panels having uniform properties
US3325823A (en) * 1964-03-16 1967-06-13 Reeves Bros Inc Manufacture of foam material
US3517414A (en) * 1967-08-31 1970-06-30 Scottdel Inc Apparatus for processing plastic material
DE1956419A1 (de) * 1968-11-23 1970-06-11 Luigi Tomasoni Verfahren und Vorrichtung zum Herstellen von expandiertem plastischem Material oder Kunststoffmaterial
NO131636C (it) * 1970-09-01 1975-07-02 Unifoam Ag
GB1564604A (en) * 1975-11-07 1980-04-10 Unifoam Ag Manufacture of polymeric foam
US3823099A (en) * 1971-09-24 1974-07-09 E Doyle Thermosetting unsaturated polyester foam products
JPS4948354B2 (it) * 1972-01-10 1974-12-20
US3810860A (en) * 1972-04-12 1974-05-14 Petroleum Converters Inc Polymerization of crude petroleum hydrocarbon
US3821130A (en) * 1972-04-26 1974-06-28 Dow Chemical Co Air frothed polyurethane foams
US3862879A (en) * 1973-03-12 1975-01-28 Dow Chemical Co Articles coated with air frothed polyurethane foams
US4001180A (en) * 1975-02-27 1977-01-04 Doyle Earl N Polyurethane curing agent
US4121529A (en) * 1976-09-20 1978-10-24 B & B Insulation, Inc. Buoyancy systems
US4248811A (en) * 1977-12-05 1981-02-03 Doyle Earl N Safety tires, methods and equipment therefor
US4191254A (en) * 1978-01-16 1980-03-04 Baughman Kenneth E Apparatus and method for plugging voids in a ground stratum
US4288564A (en) * 1978-04-11 1981-09-08 Mobay Chemical Corporation Process for the production of microcellular elastomeric moldings and the resultant products
US4254179A (en) * 1979-02-22 1981-03-03 Scottdel, Inc. Fragrance impregnated foam and method of making the same
US4298557A (en) * 1979-12-12 1981-11-03 The Dow Chemical Company Method and apparatus for the preparation of foamed structures
US4316875A (en) * 1980-01-28 1982-02-23 Union Carbide Corporation Apparatus for producing a curable polyurethane froth
US4370117A (en) * 1980-09-05 1983-01-25 Thermoset Ag Foaming apparatus
US4337318A (en) * 1980-09-30 1982-06-29 Doyle Earl N Process for the total pre-expansion of polyurethane foam
US4567008A (en) * 1981-02-18 1986-01-28 Hyman International Limited Production of foams
IE52288B1 (en) * 1981-02-18 1987-09-02 Hyman Int Ltd Production of foams
FR2517591A1 (fr) * 1981-12-03 1983-06-10 Poncet Jean Procede et dispositif pour fabriquer en continu des blocs de mousse de polymeres
IT1155453B (it) * 1982-01-18 1987-01-28 Olmo Giuseppe Superflexite Procedimento ed impianto per la schiumatura in continuo di materie plastiche e prodotti che ne risultano
GB2116574A (en) * 1982-03-19 1983-09-28 Ici Plc Method of manufacturing polyurethane foams
IE54914B1 (en) * 1983-01-21 1990-03-14 Hyman Int Ltd Production of foams
DE3607964A1 (de) * 1986-03-11 1987-09-17 Bayer Ag Verfahren zur herstellung eines zelligen polyurethans
US4906672A (en) * 1988-07-29 1990-03-06 Pmc, Inc. Blowing agents for polyurethane foam
US5006569A (en) * 1989-08-16 1991-04-09 Pmc, Inc. Density reduction in flexible polyurethane foams
US5120770A (en) * 1989-11-29 1992-06-09 Doyle Earl N Use of liquid carbon dioxide as a blowing agent in the production of open-cell polyurethane foam
CA2075975A1 (en) * 1990-02-13 1991-08-14 Earl N. Doyle Process for producing n=c=o foams and the controlled pre- and post-expansion thereof
US5104904A (en) * 1990-04-23 1992-04-14 Crowley Chemical Co. Use of aromatic petroleum oils as surfactant for polyurethane foams
US5182313A (en) * 1992-01-09 1993-01-26 Scott Carson Method and apparatus for forming articles made of polyurethane

Also Published As

Publication number Publication date
US5620710A (en) 1997-04-15
USRE37075E1 (en) 2001-02-27
US5629027A (en) 1997-05-13
USRE37115E1 (en) 2001-03-27
ITMI932090A1 (it) 1995-03-30
ITMI932090A0 (it) 1993-09-30
US5639483A (en) 1997-06-17

Similar Documents

Publication Publication Date Title
IT1270979B (it) Procedimento e apparecchiatura per la produzione in continuo di schiume poliuretaniche in blocchi
NO942522L (no) Fremgangsmåte og anordninger for kontinuerlig tilvirkning av polyuretan-skumblokker
DE3563595D1 (en) Method and apparatus for producing foam
GR3017960T3 (en) Method and device to make construction foam, in particular cement foam.
MX9703891A (es) Procedimiento y dispositivo para la produccion de espuma utilizando dioxido de carbon disuelto bajo presion.
AU1598995A (en) Extruded polymer foam with filler particles and method
EP0378243A3 (en) Method for producing polyurethane foam and apparatus therefor
IE900987L (en) Improvements in and relating to a method for the production¹of a flame-resistant, elastic, soft polyurethane foam
GB9304120D0 (en) Improved mixer
GB2271742B (en) Process for extruding low density foam using water blowing agent
SE8800765D0 (sv) Method and apparatus for the production of cellular concrete and foam concentrate used therein
GB1047731A (en) Improvements in or relating to the production of plastic foam
MX9709133A (es) Espumas de poliuretano mejoradas de celda abierta y metodos y composiciones para preparar las mismas.
MY119772A (en) Continuous process for manufacturing polyolefin foam beads
MY140020A (en) Thermoplastic polyurethane, and method and apparatus for producing the same
PL335142A1 (en) Method of and mixer for obtaining a reaction mixture consisting of isocyanate and a polyol preparation
IT1264930B1 (it) Procedimento e sistema per la produzione in continuo di schiume polimeriche
US4146066A (en) Method of introducing reaction mixtures for single-component foams into pressure containers
CA2107240A1 (en) Process and apparatus for the preparation of a polyurethane reaction mixture
EP0439692A3 (en) A process for producing synthetic resin foam
TW329405B (en) A process for producing foam materials from two-component reactive plastics using carbon dioxide as blowing agent and the device thereof
JPS5772839A (en) Production of rigid foamed polyurethane
JPS56130324A (en) Blow foaming method of hard urethane foam by air spray foaming
IT1236737B (it) Procedimento di realizzazione di schiuma poliuretanica e schiuma ottenuta con il procedimento
IT1273611B (it) Procedimento e apparecchitura per la preparazione di miscele poliuretaniche schiumabili

Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970926