CN102391540A - Foaming method for preparing polyurethane foam - Google Patents
Foaming method for preparing polyurethane foam Download PDFInfo
- Publication number
- CN102391540A CN102391540A CN2011102713669A CN201110271366A CN102391540A CN 102391540 A CN102391540 A CN 102391540A CN 2011102713669 A CN2011102713669 A CN 2011102713669A CN 201110271366 A CN201110271366 A CN 201110271366A CN 102391540 A CN102391540 A CN 102391540A
- Authority
- CN
- China
- Prior art keywords
- foaming
- foam
- packing paper
- slurries
- polyurethane foam
- 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
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a foaming method for preparing polyurethane foam. The foaming method comprises the following steps of: (1) adding premixed foaming slurry into a foaming box; (2) putting packing paper along the inner wall of the foaming box; and (3) after the packing paper is immersed by the foaming slurry, lifting the packing paper upwards along with the foaming of the foaming slurry till the foaming is finished. In the foaming process, the packing paper and the foaming slurry are lifted upwards and synchronously, so that the resistance of the box wall when the foaming slurry rises can be reduced and even eliminated, further the height of foam on the edge is level to the height of foam in the center, the foaming body with a smooth surface is obtained and the yield of a foaming product is improved.
Description
Technical field
The present invention relates to produce the foaming method of polyurethane foam.
Background technology
No matter be through the manual foaming or the foaming slurries of mechanical foaming gained; It is positioned in the foam box behind the free foaming foam article top of gained, and all to be circle vaulted, this mainly be since the resistance between the foaming surface tension of slurries own and foam material edge and tank wall big due to; The goods of gained need the vaulted cutting of the circle at foam article top, because the existence of top dome has increased waste material when making foams cutting flaw-piece.
Summary of the invention
The present invention has overcome deficiency of the prior art, and a kind of foaming method of producing polyurethane foam is provided, and the foam article that adopts this foaming method to produce can reduce waste material, improves the volume ratio of foam article.
The foaming method of producing polyurethane foam provided by the invention comprises the steps:
The foaming slurries that (1) will stir in advance add in the foam box;
(2) place packing paper along the inwall of foam box;
(3) wait to foam behind the slurries submergence packing paper, upwards lift packing paper, accomplish until foaming with the foaming of foaming slurries.
In the foaming process; Packing paper and foaming slurries are upwards lifted synchronously; The speed that lifts is not less than the expansion rate of foaming slurries, and the tank wall resistance in the time of can reducing even eliminate the rising of foaming slurries makes that the foam height on the limit is equal with the center; Obtain the foams of surfacing, improve the volume ratio of foam article.
Described packing paper is a kraft paper, because kraft paper has the band pasta, smoother is easier to break away from foam article after foaming is accomplished.
Embodiment
Further specify the present invention below in conjunction with embodiment.
At present, when producing polyurethane foam product, after the slurries that will foam mix; Directly pour into and let alone free foaming in the foam box; In the foaming process, because the resistance between the foaming surface tension of slurries own and foam material edge and tank wall is bigger, it is vaulted that the top of the goods of gained all is circle; The actual foam article used needs the vaulted cutting of the circle at top, because the existence of top dome has increased waste material when making foams cutting flaw-piece.
The foaming method of producing polyurethane foam provided by the invention is that the foaming slurries that at first will stir in advance add in the foam box; Place packing paper along the inwall of foam box then, said packing paper is preferably kraft paper; Wait to foam behind the slurries submergence packing paper, upwards lift packing paper with the foaming of foaming slurries, the speed that lifts is not less than, slightly faster than or the expansion rate of the slurries that equal to foam, accomplish until foaming.The inwall packing paper upwards lifts with the foaming slurries synchronously, and the tank wall resistance in the time of can reducing even eliminate the rising of foaming slurries makes that the foam height on the limit is equal with the center, obtains the foams of surfacing.
Claims (3)
1. a foaming method of producing polyurethane foam is characterized in that comprising the steps:
The foaming slurries that (1) will stir in advance add in the foam box;
(2) place packing paper along the inwall of foam box;
(3) wait to foam behind the slurries submergence packing paper, upwards lift packing paper, accomplish until foaming with the foaming of foaming slurries.
2. the foaming method of producing polyurethane foam according to claim 1 is characterized in that speed that described packing paper lifts is not less than the expansion rate of foaming slurries.
3. the foaming method of producing polyurethane foam according to claim 1 and 2 is characterized in that described packing paper is a kraft paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102713669A CN102391540A (en) | 2011-09-14 | 2011-09-14 | Foaming method for preparing polyurethane foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102713669A CN102391540A (en) | 2011-09-14 | 2011-09-14 | Foaming method for preparing polyurethane foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102391540A true CN102391540A (en) | 2012-03-28 |
Family
ID=45858935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102713669A Pending CN102391540A (en) | 2011-09-14 | 2011-09-14 | Foaming method for preparing polyurethane foam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102391540A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107553804A (en) * | 2017-09-08 | 2018-01-09 | 张家港长泰汽车饰件材料有限公司 | The foaming method of polyurethane foam |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1803439A (en) * | 2006-01-19 | 2006-07-19 | 河北科技大学 | Raise-and-draw device for eliminating hump for horizontal continuous foaming machine |
-
2011
- 2011-09-14 CN CN2011102713669A patent/CN102391540A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1803439A (en) * | 2006-01-19 | 2006-07-19 | 河北科技大学 | Raise-and-draw device for eliminating hump for horizontal continuous foaming machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107553804A (en) * | 2017-09-08 | 2018-01-09 | 张家港长泰汽车饰件材料有限公司 | The foaming method of polyurethane foam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204447418U (en) | Flotation froth breaking agitator | |
| CN102391540A (en) | Foaming method for preparing polyurethane foam | |
| CN204171301U (en) | A kind of liner plate sandbox | |
| CN202271483U (en) | Foaming box | |
| CN107030856A (en) | A kind of method for improving gypsum board manufacture foam stability | |
| CN102366985A (en) | Foaming case | |
| CN104986989A (en) | Imitation jade trim strip and preparation method thereof | |
| CN103978099B (en) | The integrated process equipment of a kind of steel plate lid | |
| CN204094055U (en) | With the octagonal gate stick mould of molten iron return block | |
| CN204147739U (en) | The spray purification system of acetic acid | |
| CN201794258U (en) | Moving floor board for machine room | |
| CN102602615A (en) | Modular ceramic wine tank | |
| CN205208127U (en) | Aluminium ingot convenient to transportation | |
| CN204713647U (en) | A kind of phenol glue dedicated storage means | |
| CN203944709U (en) | The integrated process equipment of a kind of steel plate lid | |
| CN104162924A (en) | Pentagram mold manufacturing method | |
| CN103058555B (en) | A kind of sand aerating stablizer and preparation method thereof | |
| CN204802927U (en) | Elevating gear convenient to adjust | |
| CN204395799U (en) | Prepare the slurry agitating device of cool skin | |
| CN102499401A (en) | Vermicelli processing method | |
| KR200321582Y1 (en) | Stain net courage | |
| CN202571180U (en) | Casting head structure of thermostat base | |
| CN204052507U (en) | Steel floor support plate V-type groove press nips | |
| CN208758383U (en) | A kind of bend pipe shaping mould | |
| CN202316922U (en) | End cover die for speed reducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20120328 Assignee: LIYANG CITY SHANHU INDUSTRY CO., LTD. Assignor: Automobile Decoration Material Branch, Liyang Shanhu Industrial Co., Ltd. Contract record no.: 2013320000020 Denomination of invention: Foaming method for preparing polyurethane foam License type: Exclusive License Record date: 20130122 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120328 |