CN1139612A - Method and apparatus for vertical producing sparkle polyurethane block material - Google Patents
Method and apparatus for vertical producing sparkle polyurethane block material Download PDFInfo
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- CN1139612A CN1139612A CN96105002.0A CN96105002A CN1139612A CN 1139612 A CN1139612 A CN 1139612A CN 96105002 A CN96105002 A CN 96105002A CN 1139612 A CN1139612 A CN 1139612A
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- 229920002635 polyurethane Polymers 0.000 title claims abstract description 52
- 239000004814 polyurethane Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 title claims description 42
- 239000006260 foam Substances 0.000 claims abstract description 62
- 239000000203 mixture Substances 0.000 claims abstract description 52
- 239000004604 Blowing Agent Substances 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 238000009835 boiling Methods 0.000 claims abstract description 6
- 238000005187 foaming Methods 0.000 claims description 37
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 24
- 239000011496 polyurethane foam Substances 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000004088 foaming agent Substances 0.000 claims description 6
- 238000010924 continuous production Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 2
- 208000012868 Overgrowth Diseases 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000006116 polymerization reaction Methods 0.000 description 11
- 238000009826 distribution Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 206010000269 abscess Diseases 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000013011 aqueous formulation Substances 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001869 rapid Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- -1 siloxanes Chemical class 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
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- 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
-
- 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
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/203—Expanding the moulding material in a vertical channel
-
- 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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- 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)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Polyurethanes Or Polyureas (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
A process and an apparatus for upwardly production of foamed polyurethane slab-stocks. The reactive polyurethane components are mixed, under pressure, with a low-boiling blowing agent kept in the liquid state; frothing of the mixture is started by continuously flowing the same into a frothing device (10) comprising a pressure equalizing chamber (13) and a pressure-drop zone (17, 31, 32) axially extending in the flow direction, which emerges into a frothing cavity (19) at the bottom of an upwardly diverging and upwardly extending expansion enclosure (20) provided with moving wall means (22) for taking off the expanding foam.
Description
The present invention relates to novel and easily mode use the innovative principle of foam device to produce the method and apparatus of polyurethane foamed blocks material continuously, described foam device is the theme of former European patent application EP A 0,645 226.
In the continuous production of flexible and rigid polyurethane foam piece material, the equipment that common usage level is extended, the feature of described equipment is that overall dimension is big and the daily output is high, because the standard polyurethane foaming generally requires the translational speed height of conveyer and therefore requires the polymerization path length of foam, avoiding that undesirable phenomenon takes place, still be under the polyurethane foam that liquid mixture flows back to expansion or flow in the initial polymerization mutually thereby make; This type of legacy equipment for example is described among US-A-3325823 and the US-A-3786122.
For overcome this shortcoming and reach provide have smaller szie and more small capacity so that the result is better and use the purpose of more economical equipment, European patent application EP-A 0645226 has proposed a kind of special foaming method and system of continuous production polyurethane foamed blocks material, they use a kind of special foam device, can make reactive polyurethane component and a kind of low-boiling foaming agent, particularly CO whereby
2Or some other chemical inertness blowing agent, under pressure controlled condition, mix, so that blowing agent remains on liquid state before foaming.Specifically, according to the document, the foaming of polyurethane mixture is finished by a kind of continuation method, and this method comprises the steps: the mixture of preparation feedback based polyurethane component and liquid low-boiling foaming agent; The mixture that is produced infeeded all press in the chamber and described mixture is assigned to along in the depressor area of the axially extended expansion of flow direction of this mixture, provide counter-pressure with upstream, thereby make blowing agent be in liquid state at described depressor area; With begin foaming by the blowing agent in release pressure and the mixture gradually, make described mixture flow through described depressor area simultaneously and enter in the foam chamber of an accumbency device, thereby foam is assigned in the substrate that moves horizontally.
In the past, also proposed to be used for to produce continuously machine, wherein with than low velocity and output production and pull-up polyurethane foam, to reduce the entire equipment overall dimension based on the polyurethane foam of conventional aqueous formulation.The example can find in a lot of existing documents, and for example french patent application 2023961 or European patent application EP-A-0 058 553.In the various schemes that proposed, there are not several practices that are used for.
Specifically, in french patent application FR-A-2,023 961 and European patent application EP-A-0 058 553, the polyurethane mixture that is obtained by conventional mixing arrangement infeeds bottom, foaming space with liquid state, here mixture expands because of the gas that chemical reaction produced between polyurethane component and the water, and polymerization when pull-up; The length in the height in foaming space and speed that blown polyurethane materials is pulled up and whole polymerization path depends on mixes and foaming condition.
In general, at the method and apparatus that is used for the conventional urethane mixture that these existing documents propose, the expansion of foam only be since the carbon dioxide that chemical reaction produced between water and isocyanates be used for finish.Therefore, it is still undesirably excessive that foam reaches the height in complete expansion and the desired foaming of polymerization space; And the feature of polyurethane material and equipment itself depends primarily on used technology.Particularly, care should be used to ground reduces the pressure on the foaming body when up step begins, avoiding that the structure of abscess is produced any adverse effect, because the foaming of the chemical reaction between polyurethane component changes on speed because of many uncontrollable or variable factors.Therefore, all hint or proposition are not suitable for this foaming technique at the method and apparatus of producing continuously in the polyurethane foamed blocks material to these documents.
According to experimental test, have found that now by the method that generates sparkle polyurethane block material from top, suitably using foaming technique, might improve foaming structure and reduce the overall dimension of equipment and simplify this equipment, because expand in mixture makes progress foaming process and chemical reaction takes place before beginning; Therefore the adverse effect of pressure in expanding block is not quite serious, and significantly reduces.
Therefore, an object of the present invention is to provide the method and apparatus of continuous production polyurethane foamed blocks material, they use foaming technique and a kind of special foam expansion device easily, this device is designed to and can adding the release of depressing mixing polyurethane component and liquid inertia blowing agent and controlling blowing agent, avoid the rapids evaporation of blowing agent by the condition that keeps being suitable for promoting this mixture to foam, thereby the controlled expansion of foam is taken place in less space.
According to a first aspect of the invention, provide a kind of method of continuous production polyurethane foamed blocks material, it comprises the steps: the mixture of preparation feedback based polyurethane component and liquid low-boiling foaming agent; The mixture that is produced infeeded all press in the chamber and described mixture is assigned to along in the depressor area of the axially extended expansion of flow direction of this mixture, provide counter-pressure with upstream, thereby make blowing agent be in liquid state at described depressor area.Begin foaming by the blowing agent in release pressure and the mixture gradually then, make described mixture flow through depressor area simultaneously and enter in the foam chamber, this mixture becomes the polyurethane material that expands gradually by blowing agent in foaming in the expanding chamber of the upwardly extending open-top of foam chamber; And upwards take out expanding material from described expanding chamber subsequently, the while still foams and chemical reaction takes place between polyurethane component.
According to a second aspect of the invention, provide a kind of equipment that is suitable for producing continuously the polyurethane foamed blocks material.This equipment comprises that one is used for mixing polyurethane chemistry composition and liquid blowing agent such as CO under pressure controlled condition
2Mixing arrangement.This mixing arrangement links to each other with a foam device by feed line, foam device comprises that a mixture that leads to the axially extended depressor area of streamwise distributes and pressure levelling chamber, in this pressure levelling chamber, providing counter-pressure to make blowing agent be in liquid state, and gradually blowing agent is discharged in the polyurethane mixture in the foam chamber.This equipment also contains an expanding chamber with open-top of upwardly extending wall in combination; Foam chamber between the through part of the depressor area of foam device and expanding chamber bottom of device; With a upwardly extending foam extraction system, this system is included on the upwardly extending wall flaky material that slides and move with the expanded material of expanding chamber inside.
Illustrate in greater detail method and apparatus of the present invention below with reference to accompanying drawings, wherein:
Fig. 1 is the longitudinal sectional view by present device;
Fig. 2 is the longitudinal sectional view of this equipment edge perpendicular to the plane of Fig. 1;
Fig. 3 is the cross-sectional perspective view of the foam device of Fig. 1 with bigger size Expressing;
Fig. 4 is a kind of cross sectional view of improved foam device;
Fig. 5-8 explanation is used for the different embodiments of depressor area of foam device of the equipment of Fig. 1.
The present invention is based on foaming technique convenient use of upwards producing continuously in the polyurethane foamed blocks material.This type of piece material product is developed and is described in the foam device (this device had been used for upwards producing of polyurethane foamed blocks material already) among existing European patent application EP-A-0,645 226 by the present patent application people and produces, with the improvement foaming condition, thereby the foaming of mixture when moving with pull-up with low speed bottom expanding chamber, polyurethane foam is taken place so that the expanded material of the direction identical with the release of gaseous foaming agent in all are in utmost point small space is inner; Like this, with traditional expansion that has not only improved foaming condition and foam of comparing, but also can reduce the height dimension of whole foaming machine.
As depicted in figs. 1 and 2, this equipment mainly comprises a foam device 10 that is located at expanding chamber bottom, and this expanding chamber comprises a path 11 that is used for polyurethane foam 12, and it vertically extends and polymerisation takes place therein.
Specifically, shown in the zoomed-in view of Fig. 1 and Fig. 3, a side of the distribution rod 13 of foam device has the depressor area 17 of a narrow vertical flute profile, and it stretches in the short horizontal duct 18 that leads to a foam chamber that makes progress 19.This chamber 19 has a funnel shaped part 19A at the bottom of the expanding chamber that stretches into open-top as shown in Figure 1, and this expanding chamber has the upwardly extending sidewall 20 that upwards disperses from the dispersion part 19A of foam chamber.
As mentioned above, the dispersion part 19A of foam chamber partly penetrates between the sidewall 20 of the bottom that limits sidewall 26 and the inlet of the expanding chamber that enters vertically extending open-top is provided, when expanding material was pulled upwardly from the bottom and is mobile, the foaming and the expansion of polyurethane mixture took place in foam chamber in a controlled manner.
Specifically, the expanding chamber of foamed polymer and path 11 are limited by translational surface on each side, and this translational surface moves on to upper end cutting area 21 with foam and moves simultaneously and laterally contain polyurethane foam 12.
As illustrated in fig. 1 and 2, each translational surface that moves simultaneously with polyurethane foam is limited by bar shaped sheet material 22 (as paper slip or plastic foil), and this sheet material is untied from lower roll 23, is wound up on the top roll 24 again. Roller 23 and 24 is suitably used machine driving and control so that the speed of each single material strips 22 corresponding to polyurethane foam 12 be pulled up or on the speed of moving.Strip material 22 also contains foaming mixture in foaming step.
Therefore, being pulled upwardly of polyurethane foam 12 must be to carry out in the speed of the inner velocity correlation that expands and rise of foam chamber 19,19A and expanding chamber with mixture.This is pulled upwardly by the conveyer belt 25 on two offsides that are installed in path 11 as shown in Figure 2 by at least two and finishes.Hard sidewall 26 is contained in other both sides, and each wall 26 11 should be enough to make size and the Stability Analysis of Structures of polyurethane foam 12 polymerization process along the path from the upwardly extending space of the apical margin of wall 20.
As shown in the figure, polyurethane foam 12 is pulled upwardly the roller 24 that exceeds the bar 22 that is used for reeling again, pulls to the top and a transverse cuts device 21 of this equipment, is cut into single block of material 27 of expandable polyurethane foam and takes out these piece material from this equipment top at this.
Fig. 3 constitutes the cross-sectional perspective view of first embodiment of foam device 10 of the major part of this equipment with the explanation of large scale more.
As can be seen from Figure 3, an elongated slot defines a depressor area.This groove is limited by the parallel plane surface of streamwise extension basically.Limit another groove of depressor area 17, install or be arranged on the longitudinal axis that is parallel to foam chamber 19 and upwardly extending polymerization path 11 and be in the plane of certain distance horizontal expansion with this longitudinal axis.Length and the thickness of groove 17 on flow direction must make and is enough to make blowing agent to be in liquid counter-pressure in the chamber 14 of foam device and mixing arrangement 16 inner generations.Only pass through embodiment, the groove 17 that limits depressor area can have 0.1-1 millimeter opening thickness on perpendicular to flow direction, length on flow direction is about 10-30 millimeters, and for example be about 2 meters at the width of the cross-machine direction of expanding chamber 20, and this width always equals the width of polyurethane material 12 in the same plane.
Usually, the shape of depressor area 17, cross-sectional area and physical dimension depend on Several Parameters.More particularly, under Fig. 3 situation, can calculate the geometric properties of the groove that limits depressor area 17 by following formula, thereby obtain at its upstream, promptly in the pressure levelling chamber 14 of foam device 10, be suitable for making blowing agent to be in liquid pressure P, 5 crust or higher pressure for example, and, for example laminar flow and required shearing condition are provided for this groove with the flow velocity of about 5-10 meter per seconds with the flow velocity of remarkable subcritical value or Reynolds number:
The pressure (crust) in the pressure levelling chamber 14 of P=foam device wherein;
The Q=flow (rise/minute)
The L=groove chamber 14 vertically on size (millimeter);
The length (millimeter) of l=groove on flow direction;
The height of S=groove or thickness (millimeter)
K=0.03-1.2, depend on by experimental test the viscosity and the proportion of chemical constituent.
In Fig. 1 and 3, the groove 17 that limits depressor area is placed in the plane of the axle that is parallel to vertical-path 11; Yet it can also have different orientations or form arbitrarily angled with described plane.
Again as can be seen from Figure 3, the groove 17 that limits depressor area leads in one first horizontal duct 18 of foam chamber, this foam chamber is by described distribution rod 13, the sidewall 28 that backward contracts with respect to the groove that limits depressor area 17 and extend to horizontal upper wall 29 qualifications that exceed above-mentioned groove from behind.
Be important to note that wall 19A and 19B stretch into expanding chamber 20 bottoms, and expanding chamber 20 upwardly extending distances should be enough to CO that polyurethane mixture is progressively being discharged with gaseous state when polyurethane component also mutually chemical reaction does not take place
2Or complete expansion under the blowing agent effect.Because polyurethane mixture is because of CO
2Release and foaming immediately, and supposition occur to fill the thick paste in chamber 19, foam will evenly expand with the direction identical with the vertical taking-up of polyurethane material 12.The loose structure that obtains in polyurethane foam is thin and even, does not have air pocket or hole.This foaming and expansion are finished with very low take-off speed in less expansion space.
Therefore, with polyurethane foam 12 move past thereon the speed of the speed of strip material 22 of Cheng Yidong and conveyer belt 25 must be with foaming the time speed of expansion of polyurethane foam suitably be associated.These speed must basic keep constant, to avoid forming because of existing the hole to have too high density or lacking inhomogeneity polyurethane foam.
Therefore, the condition of work of each moving-member of this equipment must be suitably interrelated, keep each constant airspeed and the best via suitable adjustment and control device (not shown), pass through suitably to test the optimal speed of determining under the various situations according to the speed of expansion and the rate of climb of the polyurethane foam of estimating in the foaming process.
Use according to being used to produce the testing equipment of Fig. 1 and 2 example illustrated of piece material that the transverse moment tee section is 2 * 1.2 meters a blown polyurethane materials.The distance that this equipment extends to short transverse is about 5 meters, and this comprises the upper area that is used to cut and remove the piece material.This equipment is equipped with two conveyers 25 with 0.9 meter/minute constant speed operation.The foaming of foam and expansion are finished along about 1 meter vertical cross-section, and time corresponding is about 1.2 minutes; To distribute rod 13 to have a thickness be 0.5 millimeter groove and extend 30 millimeters parallel walls by streamwise and limit.
Also available kraft paper strip limits the translational surface 22 that moves along polymerization path 11 with polyurethane foam 12.
Use is with the polyurethane mixture of three kinds of part preparations.
A partial discharge 24 kg/min PPGs (molecular weight 3500) 100.00 water 2.50 Ammonia catalyst 0.10 siloxanes 1.20
B partial discharge 12.5 kg/min 80:20TDI 55.00
C partial discharge 0.05 kg/min stannous octoate catalyst based 0.22
Above-mentioned amount is to account for the parts by weight definition of polyalcohol.
The A part of polyurethane mixture also uses a certain amount of liquid carbon dioxide saturated, and its amount should be enough to reach in storage bin inside the pressure of about 10 crust.
After starting this equipment and determining the optimum speed of conveyer belt, polyurethane mixture foams regularly, along with the traction of conveyer 25 continues to move upward along polymerization path 11 and finish its expansion in expanding chamber 20 ends.
After it moved upward end, the polyurethane material of polymerization was cut into about 1.5 meters high pieces, obtains the uniform polyurethane foam of density, and the measured value of this density is 15 kilograms/meter
3
The structure of abscess is meticulous and even, does not contain any large-sized space or bubble, thereby proof has commercial acceptable quality.
Repeat to test several times, all significantly reached the analog result that shows the major advantage that can obtain by method and apparatus of the present invention.
Fig. 4 illustrates that a kind of of foam device may retrofit, and it can improve the operation of this equipment and the feature of polyurethane foam in some cases.In Fig. 4, use and respectively scheme identical reference number with the front and represent similar or equivalent elements.
Equipment shown in Figure 4 and equipment shown in Figure 3 different mainly belong to the following fact.At this moment the wall 28 of closure catheter for closing 18 bottoms forms the extension of the side surface of the groove that limits depressor area 17.The coherent of these surfaces can reduce cavitation (this phenomenon makes the polyurethane mixture generation turbulent flow that occurs from the groove of the qualification depressor area 17 that distributes rod 13), so just improved the quality of foaming and polyurethane foam.
As mentioned above, the form of the depressor area 17 in the example of Fig. 1-4 is the limiting grooves that extend along the mixture flow direction, and this groove is as the length of the pressure levelling chamber 14 that enters foam device.
Fig. 5 schematically presentation surface to the front view of the distribution rod 13 of the outlet of groove 17.Remaining Fig. 6,7 is similar figure with 8, is used to illustrate the different schemes and the difformity of the opening that limits depressor area.
In Fig. 6, depressor area for example is arranged side by side, limits along the short groove 31 of rod 13 longitudinal extension by four groups.On the contrary, Fig. 7 explanation transversely arranged groove 31 in rod 13, and the depressor area of one group of circular hole with circular cross-section is equipped with in Fig. 8 explanation.Although the rectangular shape of rod 13 and the groove configuration of depressor area provide better result, the difformity of the chamber 14 of foam device and the difformity of depressor area and opening and arrangement are all within the scope of the present invention.
Can know and find out from foregoing description and explanation, the present invention relates to a kind of new combination that is used for producing continuously the vertical equipment of hard or flexible polyurethane foam piece material, the device that uses can make initial foaming stages carry out before chemistry is instead given birth to and foam is moved upward, thereby improves the quality of entire method and expanded material.
Claims (12)
1. the method for a continuous production polyurethane foam, it comprises the steps: the mixture of preparation feedback based polyurethane component and liquid low-boiling foaming agent; Send into described mixture in the pressure levelling chamber (13) and distribute this mixture to make it depressor area (17 in the expansion of extending along the mixture flow direction, 31,32) upward flow, thereby at this depressor area (17,31,32) upstream provides counter-pressure to make blowing agent be in liquid state; Begin the foaming of mixture by the blowing agent in progressively release pressure and the mixture, make mixture flow through depressor area (17,31,32) simultaneously and enter in the foam chamber (19), it is characterized in that foaming mixture progressively expands because of blowing agent; Make this polyurethane component at expanding chamber (20) internal-response from the upwardly extending open-top of this foam chamber (19); Be pulled upwardly expanding material from expanding chamber (20) bottom, foam simultaneously and chemical reaction take place between polyurethane component.
2. according to the method for claim 1, it is characterized in that it also comprises as next additional step: make the foaming mixture horizontal transfer to as described in foam chamber (19) upwards disperse part (19A).
3. equipment that is suitable for producing continuously the polyurethane foamed blocks material, it comprises that one is used for mixing polyurethane chemistry component and liquid blowing agent such as CO under pressure controlled condition
2Mixing arrangement (16), it links to each other with a foam device (10) along its feeder sleeve that moves (15) by a polyurethane mixture that is produced, described foam device (10) comprises that leads to a depressor area (17 that extends along the polyurethane mixture flow direction, 31,32) mixture distributes and pressure levelling chamber (13), in described pressure levelling chamber (13), to provide counter-pressure to make blowing agent be in liquid state, and gradually blowing agent is discharged into the bubble chamber (19,19A) in the Nei Bu polyurethane mixture, it is characterized in that described equipment also comprises the expanding chamber (20) of an open-top that is limited by upwardly extending sidewall; Described foam chamber (19,19A) be installed between the described depressor area (17,31,32) and the branch of the through part bottom the described expanding chamber (20) of this foam device (10); With a foam extraction system (22,25), this system comprises the sheet material (22) that upward moves at least one pair of relative described sidewall (20,26) together with the expanded material of described expanding chamber inside.
4. according to a kind of equipment of claim 3, wherein said depressor area is the slot type opening (17) from described pressure levelling chamber (13) longitudinal extension.
5. according to a kind of equipment of claim 4, the horizontal expansion in the plane of the longitudinal axis that is parallel to described expanding chamber of wherein said slot type opening.
6. according to a kind of equipment of claim 4, it also comprises a guiding face (28) in described foam chamber (19), and this face is stretched from an epitaxial lateral overgrowth of described slot type opening.
7. according to a kind of equipment of claim 3, wherein said depressor area comprises many step-down openings (31,32).
8. according to a kind of equipment of claim 7, separately the relief groove (31) side by side that wherein said step-down opening comprises at least that one group of at least a portion along described pressure levelling chamber (13) is provided with.
9. a kind of equipment according to Claim 8 is characterized in that described step-down opening extends along the axial direction that is parallel to described pressure levelling chamber (13).
10. a kind of equipment according to Claim 8 is characterized in that described step-down opening extends along the axial direction of transversal described pressure levelling chamber (13).
11., it is characterized in that described depressor area comprises a cover separately circular hole (32) side by side at least according to a kind of equipment of claim 3.
12., it is characterized in that described pressure homogenizing and mixture distributor chamber (13) and described depressor area (17) extend at least one cross-directional of described foam chamber according to a kind of equipment of claim 3.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT000766A/1995 | 1995-04-13 | ||
| IT000766A/95 | 1995-04-13 | ||
| ITMI950766A IT1273558B (en) | 1995-04-13 | 1995-04-13 | PROCEDURE AND EQUIPMENT FOR THE PRODUCTION, IN VERTICAL, OF BLOCKS IN PRE-EXPANDED POLYURETHANE FOAM |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1139612A true CN1139612A (en) | 1997-01-08 |
| CN1073007C CN1073007C (en) | 2001-10-17 |
Family
ID=11371329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96105002A Expired - Fee Related CN1073007C (en) | 1995-04-13 | 1996-04-12 | Method and apparatus for vertical producing sparkle polyurethane block material |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN1073007C (en) |
| GB (1) | GB2301595A (en) |
| IT (1) | IT1273558B (en) |
| NO (1) | NO961469L (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112793070A (en) * | 2020-12-17 | 2021-05-14 | 湖北富斯通新材料科技有限公司 | Edge film lifting device for sponge continuous horizontal foaming system and use method |
| CN112793071A (en) * | 2020-12-17 | 2021-05-14 | 湖北富斯通新材料科技有限公司 | Sponge continuous horizontal foaming system and operation method thereof |
| WO2022082474A1 (en) * | 2020-10-21 | 2022-04-28 | 华东理工大学 | Method and device for preparing polymer foam material |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19627065A1 (en) * | 1996-07-05 | 1998-01-08 | Hennecke Gmbh | Process and device for foam production using carbon dioxide dissolved under pressure |
| US6704617B2 (en) * | 2002-04-11 | 2004-03-09 | Flexible Products Company | Automated system for control and diagnostics for dispensing systems |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO309077B1 (en) * | 1993-07-14 | 2000-12-11 | Foaming Techn Cardio Bv | Process and system for continuous manufacture of polyurethane foam blocks |
-
1995
- 1995-04-13 IT ITMI950766A patent/IT1273558B/en active IP Right Grant
-
1996
- 1996-04-10 GB GB9607415A patent/GB2301595A/en not_active Withdrawn
- 1996-04-12 NO NO961469A patent/NO961469L/en unknown
- 1996-04-12 CN CN96105002A patent/CN1073007C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022082474A1 (en) * | 2020-10-21 | 2022-04-28 | 华东理工大学 | Method and device for preparing polymer foam material |
| CN112793070A (en) * | 2020-12-17 | 2021-05-14 | 湖北富斯通新材料科技有限公司 | Edge film lifting device for sponge continuous horizontal foaming system and use method |
| CN112793071A (en) * | 2020-12-17 | 2021-05-14 | 湖北富斯通新材料科技有限公司 | Sponge continuous horizontal foaming system and operation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9607415D0 (en) | 1996-06-12 |
| NO961469L (en) | 1996-10-14 |
| CN1073007C (en) | 2001-10-17 |
| ITMI950766A1 (en) | 1996-10-13 |
| IT1273558B (en) | 1997-07-08 |
| GB2301595A (en) | 1996-12-11 |
| ITMI950766A0 (en) | 1995-04-13 |
| NO961469D0 (en) | 1996-04-12 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |