DE2943859C2 - Verfahren zum Verdichten von offenzelligem Polyurethan-Schaumstoff - Google Patents
Verfahren zum Verdichten von offenzelligem Polyurethan-SchaumstoffInfo
- Publication number
- DE2943859C2 DE2943859C2 DE19792943859 DE2943859A DE2943859C2 DE 2943859 C2 DE2943859 C2 DE 2943859C2 DE 19792943859 DE19792943859 DE 19792943859 DE 2943859 A DE2943859 A DE 2943859A DE 2943859 C2 DE2943859 C2 DE 2943859C2
- Authority
- DE
- Germany
- Prior art keywords
- foam
- gas
- temperature
- process according
- mass
- 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
- 238000000034 method Methods 0.000 title claims description 43
- 229920005830 Polyurethane Foam Polymers 0.000 title claims description 14
- 239000011496 polyurethane foam Substances 0.000 title claims description 14
- 239000006260 foam Substances 0.000 claims description 66
- 230000006835 compression Effects 0.000 claims description 30
- 238000007906 compression Methods 0.000 claims description 30
- 210000002421 cell wall Anatomy 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 34
- 238000010438 heat treatment Methods 0.000 description 16
- 238000005056 compaction Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- 229920002635 polyurethane Polymers 0.000 description 6
- 239000004814 polyurethane Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
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
- B29C44/56—After-treatment of articles, e.g. for altering the shape
- B29C44/5627—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching
- B29C44/5636—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching with the addition of heat
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Polyurethanes Or Polyureas (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/044,042 US4228076A (en) | 1978-02-10 | 1979-05-31 | Method of densifying open-celled polyurethane material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2943859A1 DE2943859A1 (de) | 1980-12-04 |
| DE2943859C2 true DE2943859C2 (de) | 1987-05-07 |
Family
ID=21930208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19792943859 Expired DE2943859C2 (de) | 1979-05-31 | 1979-10-30 | Verfahren zum Verdichten von offenzelligem Polyurethan-Schaumstoff |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA1120223A (US06633600-20031014-M00021.png) |
| DE (1) | DE2943859C2 (US06633600-20031014-M00021.png) |
| GB (1) | GB2050395B (US06633600-20031014-M00021.png) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4334453C2 (de) * | 1992-10-15 | 2002-10-24 | Greiner & Soehne C A | Verfahren zur Herstellung von Schaumstoffelementen aus einer Platte oder mehreren Einzelplatten sowie Schaumstoffelement |
| DE102006032830A1 (de) * | 2006-07-14 | 2008-01-17 | Schmidt & Heinzmann Gmbh & Co. Kg | Vorrichtung zum Transportieren eines Materialstrangs |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4357859A (en) * | 1981-04-08 | 1982-11-09 | United Technologies Corporation | Pressure sensor |
| DE3625818A1 (de) * | 1986-07-30 | 1988-02-04 | Irbit Research & Consulting Ag | Verfahren und vorrichtung zur herstellung von formteilen |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3475525A (en) * | 1966-09-22 | 1969-10-28 | Timothy V Peters | Process of reticulating polyurethane foams |
| US3577519A (en) * | 1968-11-29 | 1971-05-04 | Olin Mathieson | Process for controlling the amount of densification in polyurethane foams and products produced thereby |
-
1979
- 1979-10-17 GB GB7936110A patent/GB2050395B/en not_active Expired
- 1979-10-30 DE DE19792943859 patent/DE2943859C2/de not_active Expired
- 1979-12-13 CA CA000341845A patent/CA1120223A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4334453C2 (de) * | 1992-10-15 | 2002-10-24 | Greiner & Soehne C A | Verfahren zur Herstellung von Schaumstoffelementen aus einer Platte oder mehreren Einzelplatten sowie Schaumstoffelement |
| DE102006032830A1 (de) * | 2006-07-14 | 2008-01-17 | Schmidt & Heinzmann Gmbh & Co. Kg | Vorrichtung zum Transportieren eines Materialstrangs |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2943859A1 (de) | 1980-12-04 |
| GB2050395B (en) | 1983-03-16 |
| GB2050395A (en) | 1981-01-07 |
| CA1120223A (en) | 1982-03-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| AF | Is addition to no. |
Ref country code: DE Ref document number: 2904943 Format of ref document f/p: P |
|
| AF | Is addition to no. |
Ref country code: DE Ref document number: 2904943 Format of ref document f/p: P |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8340 | Patent of addition ceased/non-payment of fee of main patent |