RO88364B - PROCEDEU SI APARAT PENTRU REGLAREA CONFIGURATIEI SECTIUNEI TRANSVERSALE A POLIMERILOR SPUMANTI îN SPECIAL A POLIURETANILOR - Google Patents
PROCEDEU SI APARAT PENTRU REGLAREA CONFIGURATIEI SECTIUNEI TRANSVERSALE A POLIMERILOR SPUMANTI îN SPECIAL A POLIURETANILORInfo
- Publication number
- RO88364B RO88364B RO110415A RO11041583A RO88364B RO 88364 B RO88364 B RO 88364B RO 110415 A RO110415 A RO 110415A RO 11041583 A RO11041583 A RO 11041583A RO 88364 B RO88364 B RO 88364B
- Authority
- RO
- Romania
- Prior art keywords
- adjustment
- sectional configuration
- pressure difference
- water column
- polymers
- Prior art date
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
- B29C44/60—Measuring, controlling or regulating
-
- 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
- B29C44/467—Foam spreading or levelling devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Polyurethanes Or Polyureas (AREA)
- Moulding By Coating Moulds (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Inventia se refera la un procedeu si la un aparat pentru reglarea configuratiei sectiunii transversale a polimerilor spumati, în principal, a poliuretanilor, la fabricarea blocurilor de spuma. Esenta inventiei consta în aceea ca, pentru reglarea configuratiei sectiunii transversale, se produce o diferenta de presiune cu ajutorul unui curent de gaz care circula între suprafata polimerului si un ecran de reglare situat deasupra, valoarea diferentei de presiune fiind adusa prin reglarea grosiera în apropierea unui punct de lucru într-un domeniu de maximum 10 mm coloana de apa; de preferinta de 2-6 mm coloana de apa si valoarea diferentei de presiune fiind mentinuta prin reglarea fina care modifica cantitatea curentului de gaz prin introducerea de aer fals, într-o stare stabilizata în apropierea punctuluide lucru mentionat înauntrul unei limite de plus minus0,1 coloana de apa. Aparatul pentru realizarea acestui procedeu este caracterizat prin aceea ca ecranul de reglare poseda o clapeta de reglare a sarcinii, deplasabila sau basculanta, al carei organ de comanda este legat electric cu sesizorul de presiune al circuitului de reglare fina, montat pe ecranul de reglare, pe cînd organul de comanda al ecranului de reglare, suspendat, este legat electric de sesizorul de pozitie conectat la clapeta de reglare a aerului din circuitul de reglare grosiera. Solutia, conform inventiei, da posibilitatea unei functionari reglate, sigura, cu o precizie deosebit de înalta si prin aceasta a obtinerii unei configuratii a sectiunii transversale ideale, ceea ce reduce la minimum pierderile de material.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU82896A HU185699B (en) | 1982-03-24 | 1982-03-24 | Method and apparatus for regulating the shaping of the cross section of freely foamable polimers, preferably poliuretans |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO88364A RO88364A (ro) | 1987-06-30 |
| RO88364B true RO88364B (ro) | 1987-07-01 |
Family
ID=10951927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO110415A RO88364B (ro) | 1982-03-24 | 1983-03-22 | PROCEDEU SI APARAT PENTRU REGLAREA CONFIGURATIEI SECTIUNEI TRANSVERSALE A POLIMERILOR SPUMANTI îN SPECIAL A POLIURETANILOR |
Country Status (18)
| Country | Link |
|---|---|
| EP (1) | EP0089663A3 (ro) |
| JP (1) | JPS58173633A (ro) |
| AU (1) | AU552853B2 (ro) |
| BR (1) | BR8301494A (ro) |
| CA (1) | CA1217012A (ro) |
| CS (1) | CS244926B2 (ro) |
| DD (1) | DD236406A5 (ro) |
| DK (1) | DK89883A (ro) |
| ES (1) | ES8501783A1 (ro) |
| FI (1) | FI830572A7 (ro) |
| GR (1) | GR77938B (ro) |
| HU (1) | HU185699B (ro) |
| NO (1) | NO831029L (ro) |
| PL (1) | PL136211B1 (ro) |
| PT (1) | PT76350B (ro) |
| RO (1) | RO88364B (ro) |
| SU (1) | SU1389670A3 (ro) |
| YU (1) | YU66083A (ro) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666393A (en) * | 1986-06-13 | 1987-05-19 | Human Industry Corporation | Apparatus for manufacturing polyurethane foam slabs in a batch |
| US4856548A (en) * | 1988-03-10 | 1989-08-15 | Paluch Bernard R | Resuscitation valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2445271A1 (de) * | 1974-09-21 | 1976-04-08 | Continental Gummi Werke Ag | Vorrichtung zum kontinuierlichen herstellen von bloecken mit im vertikalschnitt rechteckigem querschnitt aus kunststoffschaeumen insbesondere polyurethan-kunststoffschaeumen |
| GB1531131A (en) * | 1975-04-18 | 1978-11-01 | Ici Ltd | Laminating process and apparatus therefor |
-
1982
- 1982-03-24 HU HU82896A patent/HU185699B/hu not_active IP Right Cessation
-
1983
- 1983-02-21 FI FI830572A patent/FI830572A7/fi not_active Application Discontinuation
- 1983-02-25 DK DK89883A patent/DK89883A/da not_active Application Discontinuation
- 1983-03-02 GR GR70654A patent/GR77938B/el unknown
- 1983-03-04 SU SU833559503A patent/SU1389670A3/ru active
- 1983-03-07 PT PT76350A patent/PT76350B/pt unknown
- 1983-03-11 CS CS831685A patent/CS244926B2/cs unknown
- 1983-03-18 AU AU12582/83A patent/AU552853B2/en not_active Ceased
- 1983-03-18 YU YU00660/83A patent/YU66083A/xx unknown
- 1983-03-21 EP EP83102785A patent/EP0089663A3/de not_active Withdrawn
- 1983-03-22 JP JP58046095A patent/JPS58173633A/ja active Pending
- 1983-03-22 DD DD83249055A patent/DD236406A5/de unknown
- 1983-03-22 ES ES520821A patent/ES8501783A1/es not_active Expired
- 1983-03-22 RO RO110415A patent/RO88364B/ro unknown
- 1983-03-23 NO NO831029A patent/NO831029L/no unknown
- 1983-03-23 BR BR8301494A patent/BR8301494A/pt unknown
- 1983-03-23 PL PL1983241144A patent/PL136211B1/pl unknown
- 1983-03-24 CA CA000424410A patent/CA1217012A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA1217012A (en) | 1987-01-27 |
| ES520821A0 (es) | 1984-12-01 |
| PL241144A1 (en) | 1984-07-02 |
| SU1389670A3 (ru) | 1988-04-15 |
| YU66083A (en) | 1986-02-28 |
| PT76350A (en) | 1983-04-01 |
| JPS58173633A (ja) | 1983-10-12 |
| CS244926B2 (en) | 1986-08-14 |
| DK89883D0 (da) | 1983-02-25 |
| GR77938B (ro) | 1984-09-25 |
| DD236406A5 (de) | 1986-06-04 |
| AU1258283A (en) | 1983-09-29 |
| DK89883A (da) | 1983-09-25 |
| PL136211B1 (en) | 1986-02-28 |
| HU185699B (en) | 1985-03-28 |
| BR8301494A (pt) | 1983-12-06 |
| ES8501783A1 (es) | 1984-12-01 |
| FI830572A0 (fi) | 1983-02-21 |
| EP0089663A2 (de) | 1983-09-28 |
| RO88364A (ro) | 1987-06-30 |
| PT76350B (en) | 1986-01-10 |
| FI830572L (fi) | 1983-09-25 |
| NO831029L (no) | 1983-09-26 |
| AU552853B2 (en) | 1986-06-26 |
| FI830572A7 (fi) | 1983-09-25 |
| EP0089663A3 (de) | 1987-09-16 |
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