CN1147216A - Combination roll and die coating method and apparatus with improved die lip - Google Patents

Combination roll and die coating method and apparatus with improved die lip Download PDF

Info

Publication number
CN1147216A
CN1147216A CN95192787A CN95192787A CN1147216A CN 1147216 A CN1147216 A CN 1147216A CN 95192787 A CN95192787 A CN 95192787A CN 95192787 A CN95192787 A CN 95192787A CN 1147216 A CN1147216 A CN 1147216A
Authority
CN
China
Prior art keywords
die
lip
downstream
upstream
coating
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.)
Granted
Application number
CN95192787A
Other languages
Chinese (zh)
Other versions
CN1068250C (en
Inventor
奥马尔D·布朗
加里W·梅尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of CN1147216A publication Critical patent/CN1147216A/en
Application granted granted Critical
Publication of CN1068250C publication Critical patent/CN1068250C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0817—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for removing partially liquid or other fluent material from the roller, e.g. scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/06—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying two different liquids or other fluent materials, or the same liquid or other fluent material twice, to the same side of the work

Landscapes

  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A die coating method and apparatus includes a die having an upstream bar (64) with an upstream lip (60) and a downstream bar (66) with a downstream lip (62). The upstream lip is formed as a land (68) and the downstream lip is formed as a sharp edge (70). Coating fluid exists the die (40) from the slot to form a continuous coating bead between the upstream die lip, the downstream die lip, and the surface being coated. A metering roller (332) removes excess coating fluid from the coated web. The apparatus can include a roller (330) on which the coating fluid is initially coated and which contacts a web. A doctor blade (338) or a metering roller removes excess coating fluid from the roller (330).

Description

Combination roll and die coating method and device with improvement die lip
Technical field
The present invention relates to coating process.Specifically, the present invention relates to carry out the method for coating with a die.
Background of invention
United States Patent (USP) the 2nd, 681, the 294 metering supply-type platers that disclosed direct extruding of a kind of usefulness and slidingtype come the vacuum method of stable coatings bead.This stability has improved these device coating abilities.Yet these platers do not possess enough condensation abilities and think that some coating product provides desired thin wet layer, even do not accomplish in that liquid viscosity is very little yet.
United States Patent (USP) the 4th, 445 has disclosed a kind of extrusion pressing type bead coating die on surface of descending of cutting sth. askew that has for No. 458, and the described surface that descends of cutting sth. askew is forced boundary force on coating bead downstream and reduced to keep the necessary vacuum values of bead.The reducing of vacuum makes shake tremble defective and the coating streak reduces to minimum degree.In order to improve coating quality, the obtuse angle of beveled surface opposed slot axis, and must be best along the orientation movements rim (go up and hang) and the position of fluted shaft line of leaving the inclined-plane of motion rim (extension down).This optimization will be produced as the required high-quality of coating emulsion.Yet present just the shortage, be the required thin layer service behaviour of some coating products.
Fig. 1 illustrates a coating die that has as the prior art of a vacuum chamber 12 of a metering supply-type plater part.By a pump 16 a kind of coating liquid 14 is accurately supplied with and to be used for the die 10 of spreading by a motion rim 18 of support roller 20 supporting.Coating liquid is fed to a feed tube 24 by a passage 22, is used for distributing and being applied to motion rim 18 by the groove on die 26.As shown in Figure 2, coating liquid forms continuous coating bead 28 by described groove 26 and between the die lip 32 in the die lip 30 of upstream and downstream and rim 18.Size f 1And f 2, promptly the width of lip 30,32 is normally in 0.25 to 0.76 millimeter scope.Vacuum chamber 12 applies a vacuum to stablize bead at the upstream end of bead.Though this configuration can be worked suitably, but still need a kind of die coating method of improving existing method performance in many situations.
Summary of the invention
The present invention is applied to a lip-deep die coating device with fluid coatings a kind of being used for.Described device comprises a die, and this die has with the upstream blend stop of a upstream lip and a downstream blend stop with a downstream lip.Described upstream lip constitutes a composition surface and described downstream lip forms a sharp limit.One path runs through die between the upstream and downstream blend stop.Described path has a groove that is formed by upper and lower lip, thereby is coated with layer fluid and discharges die to form a continuous coating bead between upstream die lip, downstream die lip and coated surface from described groove.One metering roll removes the too much layer fluid that is coated with.Even when vacuum increases, bead does not move in the space between described composition surface and coated surface significantly yet.
Perhaps, described device can comprise that a fluid application of coating when initial is on it and the roller that contacts with rim.One too much is coated with the layer fluid arrester removes the too much layer fluid that is coated with from described roller.One die with the coating fluid application to described roller.Described arrester is a wing or a metering roll, and being coated with layer fluid and can sending rim with being touched on roller.
A kind of die coating method of the present invention comprises the following steps: to make and is coated with layer fluid by a groove; One of relative bearing by changing described at least composition surface and sharp limit is improved coating performance; Use a metering roll from removed the too much layer fluid that is coated with by the surface of spreading; Select with cooperatively interacting length, the downstream blend stop on described composition surface the corner, the downstream of spreading groove blend stop surface and by on the coated surface with the plane, sharp limit and the direct die angle of attack between the tangential plane of relative straight line, and the coating clearance distance between sharp limit and coated surface; And select groove height, multiple interocclusal clearance (overbite) and convergence (convergence) with cooperatively interacting.
Brief Description Of Drawings
Fig. 1 is the generalized section of a known coating die;
Fig. 2 is the groove of Fig. 1 die and the profile through amplifying of lip;
Fig. 3 is the profile of an extruding die of the present invention;
Fig. 4 is the groove of Fig. 3 die and the profile through amplifying of lip;
Fig. 5 is similar to the groove shown in Figure 4 and the profile of lip;
Fig. 6 is the profile that a vacuum chamber that substitutes is arranged;
Fig. 7 is the profile that another vacuum chamber that substitutes is arranged;
Fig. 8 is the profile of an alternative extruding die of the present invention;
Fig. 9 a and 9b are the profiles through amplifying of groove, surface and the vacuum chamber of the die of Fig. 8;
Figure 10 a and 10b are the schematic diagrames of the die of Fig. 8;
Figure 11 illustrates a coating test result that known extruding die is compared with the performance parameter of an extruding die of the present invention of the coating liquid that is used for a kind of 1.8 centipoise viscosity;
Figure 12 illustrates the comparative test result of the coating liquid that is used for a kind of 2.7 centipoise viscosity;
Figure 13 is the data summary table that is obtained by coating test;
Figure 14 is the curve map of constant G/TW straight line that is used for 9 kinds of different spreading liquid of an extrusion coating die of the present invention;
Figure 15 is to use three schematic diagrames that rotate the counter-drum plater of die of the present invention;
Figure 16 is to use two schematic diagrames that rotate the counter-drum plater of die of the present invention;
Figure 17 is to use the schematic diagram of a heliogravure plater of the present invention;
Figure 18 is to use one or two drum extrusion plater of die of the present invention;
Figure 19 a, 19b and 19c are to use the drawing in side sectional elevation of a soft-touch type plater of die of the present invention;
Figure 20 a, 20b and 20c are to use the drawing in side sectional elevation of a soft-touch type plater of die of the present invention;
Figure 20 d is to use the drawing in side sectional elevation of a soft-touch type plater of the die of Figure 19 c.
The detailed description of preferred embodiment
The present invention is a kind of die coating method and apparatus, and wherein said die comprises a sharp limit and a composition surface, and they are provided with to such an extent that can improve performance and make optimized performance.The configuration on described composition surface can be engaged in the shape on the access areas surface of masking liquid spreading.Can be with the composition surface surface curvature to cooperate around rim that a backing roll passes through or to make the composition surface become the plane to be engaged in the free span of the rim between two rollers.
Fig. 3 illustrates the extruding die 40 that has a vacuum chamber 42 of the present invention.By pump 46 coating liquid 14 is supplied with die 40 and be used to be applied to the motion rim 48 that supports by a backing roll 50.By a passage 52 coating liquid being fed to an inlet pipe 54 is used for distributing and being applied to motion rim 48 by a groove 56.As shown in FIG. 4, coating liquid 14 forms a continuous coating bead 58 by groove 56 and between upstream die lip 60, downstream die lip 62 and rim 48.Coating liquid can be a kind of of the liquid of many kinds or other fluid.Described upstream die lip 60 is parts of a upstream blend stop 64, and downstream die lip 62 is parts of downstream blend stop 66.The height of groove 56 can be controlled by the pad of a U-shaped, and described U-shaped pad can be made and can be crimped with brass or stainless steel.Vacuum chamber 42 applies vacuum with the stable coatings bead in the upstream of bead.
As shown in Figure 5, upstream lip 60 forms a crooked composition surface 68 and downstream lip 62 formation one sharp limit 70.This configuration is compared with known die type plater and has been improved overall performance.The improvement of so-called performance is meant and can allows with higher rim running speed and bigger be coated with lamellar spacing and higher coating liquid viscosity work and produce the wet coating layer thickness that approaches.
Point limit 70 should be cleaning and free from flaw and burr, and should be straight, in nonstraightness on 25 centimetres the length only in 1 micron.The limit radius should be not more than 10 microns.The radius that the radius on crooked composition surface 68 should equal backing roll 50 adds that one is used to be coated with the minimum of lamellar spacing and tire thickness and 0.13 non-critical mm clearance.Perhaps, the radius of crooked joint 68 can surpass the radius of backing roll 50 and can make the composition surface adjust (orientation) with respect to rim 48 with pad.Can have composition surface greater than the radius of backing roll by realizing with one by having a given convergence amount realizing with the composition surface of the same radius of backing roll with pad control composition surface.
Fig. 5 also illustrates the size of how much running parameters that are used for the individual layer extruding.The length L on the crooked composition surface 68 on upstream blend stop 64 1Can be in 1.6 millimeters to 25.4 millimeters scope.Comparatively desirable length L 1It is 12.7 millimeters.The corner A of downstream blend stop 66 1Can be in 20 ° to 75 ° scope, and more satisfactory be 60 °.The point limit 70 edge radius should be approximately 2 microns to 4 microns and more satisfactory be less than 10 microns.At the downstream of spreading groove 56 blend stop 66 surface and the die angle of attack A that passes through between the tangential plane P of parallel on rim 48 surfaces and relative straight line with sharp limit 70 2Scope can be between 60 ° to 120 °, and more satisfactory be 90 °-95 °, for example 93 °.The coating clearance G 1It is the vertical range between sharp limit 70 and rim 48.(coating clearance G 1On sharp limit, record, but be isolated shown in some figure with sharp limit in order to draw for the purpose of clear.No matter G in the drawings 1The position how-and since the bending of rim gap when sharp limit is left in its motion be increase-so the gap be on sharp limit, to measure.)
The scope of the high H of groove can be 0.076 millimeter to 3.175 millimeters.Multiple interocclusal clearance O be downstream blend stop 66 sharp limit with respect at the downstream side 72 on the crooked composition surface 68 of upstream blend stop 64 in the positioning control on the direction of rim 48.Multiple interocclusal clearance also can be regarded as for any given coating clearance G 1It is the downstream side 72 on crooked composition surface 68 leaves net 48 with respect to sharp limit 70 indentation distance.The scope of multiple interocclusal clearance can be 0 millimeter to 0.51 millimeter, and the adjustment on the opposite end of die groove should be in mutual 2.5 micrometer ranges.Need a kind of accurate erecting device that is used for this plater, for example in order to obtain accurately interocclusal clearance uniformity again.Convergence C is that counterclockwise (as shown in Figure 5) angle orientation with a position of rim 48 parallel (or concentricity with rim) is left on crooked composition surface 68, and downstream side 72 is pivots.The scope of convergence C can be 0 ° to 2.29 °, and should be each other in 0.023 ° of scope in the adjustment on the opposite end of die groove.Described groove height, multiple interocclusal clearance and convergence and fluid behaviour for example viscosity all influence the enforcement of the performance and the method for die coating device.
From the viewpoint of overall performance, in 1, the 000 centipoise scope or littler liquid, comparatively it is desirable to the groove height is 0.18 millimeter for viscosity, and multiple interocclusal clearance is that 0.076 millimeter and convergence are 0.57 °.Adopt the performance level of other groove height can be substantially near above-mentioned same performance level.Performance is even more ideal in the time of can also finding viscosity greater than 1,000 centipoise.
When will degree of convergence remaining on 0.57 °, then other optimum organization of some of groove height and multiple interocclusal clearance is as follows:
The multiple interocclusal clearance of groove height
0.15 0.071 millimeter of millimeter
0.20 0.082 millimeter of millimeter
0.31 0.100 millimeter of millimeter
0.51 0.130 millimeter of millimeter
In above-mentioned liquid viscosity scope and for any given convergence value, best multiple interocclusal clearance value seemingly directly is directly proportional with the square root of groove height value.Equally, for any given groove height value, best multiple interocclusal clearance value seemingly is inversely proportional to the square root of convergence value.
As shown in Figure 6, described vacuum chamber 42 can be the whole part of upstream blend stop 64 or be fixed that it is gone up to obtain accurately the repeatably gas flow of vacuum plant.Vacuum chamber 42 is to form also and can be connected with a vacuum source passage 80 with vacuum inlet pipe 78 by an optional vacuum choke valve 76 with a vacuum blend stop 74.The vacuum engagement face 82 of one bending can be that the whole part of upstream blend stop 64 maybe can be a part that is fixed in the vacuum blend stop 74 on the upstream blend stop 64.Vacuum engagement face 82 has and the crooked identical bending radius of face 68 of closing.Crooked composition surface 68 and vacuum engagement face 82 can be finish grinded so that be in aligned together.Vacuum engagement face 82 and crooked composition surface 68 just have the same convergence with respect to rim 48 then.
Vacuum engagement face clearance G 2 is vacuum engagement face 82 and the distance between the rim 48 at the bottom of vacuum engagement face place, and is the summation of coating clearance G 1, multiple interocclusal clearance O and the displacement that produced by the convergence C on described crooked composition surface 68.(no matter the orientation of G1 how in these figure, always the bottom of gap vacuum engagement face and the vertical range between the rim.) if vacuum engagement face clearance G 2 is bigger, then the air in the environment can flow to vacuum chamber 42 too much.Even vacuum source can have enough abilities to compensate and to remain on the specified vacuum stress level at vacuum chamber 42 places, the inflow of air still can make coating performance degenerate.
In Fig. 7, vacuum engagement face 82 is mounted in the part of the vacuum blend stop 74 on the upstream blend stop 64.In process, crooked composition surface 68 is finish-ground to the convergence C that has by " grinding is advanced ".Vacuum blend stop 74 is installed then and is utilized different grinding center correct grinding vacuum engagement faces 82, when answering the interocclusal clearance value vacuum engagement face 82 is paralleled with rim 48, and make vacuum engagement face clearance G 2 equal coating clearance G 1 so that the box lunch setting is needed.Vacuum engagement face length degree L 2Scope can be 6.35 millimeters to 25.4 millimeters.Comparatively ideal length L 2It is 12.7 millimeters.The overall coating performance of present embodiment in the coating situation of difficulty is better than the embodiment of Fig. 6, but it all the time will be through correct grinding for the condition of work of regulation.Like this, because coating clearance G 1 or multiple interocclusal clearance O are changed, vacuum engagement face clearance G 2 will move apart its optimum value.
The upstream blend stop 64 of die 40 is mounted on the upstream bar block positioning device 84 in Fig. 8 and 9, and vacuum stick 74 is mounted on the vacuum bar block positioning device 86.Directly do not interconnect on crooked composition surface 68 on the upstream blend stop 64 and the vacuum engagement face 82 on vacuum blend stop 74.Vacuum chamber 42 is connected with the empty source of the true retaining of positioner 86 and its by vacuum blend stop 74.Installation and location to the installation of vacuum blend stop 74 and location and upstream blend stop 64 are what to separate.This just improved performance of die and can obtain accurately, the gas flow of vacuum plant repeatably.This reinforcement structure of vacuum blend stop device is compared with the device of prior art and has also been helped the performance raising.In addition, this structure that is used for described vacuum blend stop 74 can be improved the application means of other prior art, for example the performance of slot type, extrusion pressing type and sliding-type application means.Between one flexible vacuum seal bar 88 sealing upstream blend stops 64 and the vacuum blend stop 74.
Clearance G 2 between vacuum engagement face 82 and rim 48 also can not remained on its optimum value by the influence of the variation of coating clearance G 1, multiple interocclusal clearance O or convergence C in coating procedure continuously.Vacuum engagement face clearance G 2 can be set in 0.076 millimeter to 0.508 millimeter the scope.More satisfactory value for clearance G 2 is 0.15 millimeter.The comparatively ideal angle position on against vacuum composition surface 82 is to be parallel to rim 48.
In coating procedure, vacuum is adjusted to obtain the coating of best quality.A typical vacuum during with the coating liquid of 6 microns wet layer thicknesses and 30.5 meters/minute a kind of 2 centipoises of rim rotating speed spreading is 51 millimeters of water.If reduce wet layer thickness, increase viscosity or improve the higher vacuum that the rim rotating speed just needs to surpass 150 millimeters of water.Die of the present invention shows than prior art device to have lower minimum good vacuum and the maximum good vacuum of Geng Gao, and can carry out work with inaccessible zero vacuum of institute in the prior art device in some cases.
Figure 10 a and 10b illustrate some situations that the location is adjusted and vacuum chamber seals.Multiple interocclusal clearance adjustment downstream blend stop 66 is moved with respect to upstream blend stop 64 so that sharp limit 70 with respect to the downstream side 72 on crooked composition surface 68 towards rim 48 motions or leaving the direction motion of rim 48.Adjust convergence and make upstream blend stop 64 and downstream blend stop 66,, be parallel to promptly that rim 48 leaves or backward towards parallel surface so that position shown in Figure 10 is left in 68 motions of crooked composition surface together around pivot center rotation by downstream side 72.Be coated with the lamellar spacing adjustment upstream blend stop 64 and downstream blend stop 66 are moved together with the distance of change between sharp limit 70 and rim 48, and the vacuum blend stop remains fixed on its bearing, and vacuum seal bar 88 is in course of adjustment deflection to prevent the air leakage.By means of on the two ends that are installed in vacuum blend stop 74 and the two end plates 90 at upstream blend stop 64 two ends that overlap air in the die two ends enter vacuum chamber 42 is leaked be reduced to minimum degree.Vacuum blend stop 74 is than 0.10 millimeter to 0.15 millimeter of upstream blend stop 64 length, and like this, under condition placed in the middle, the scope in the gap between each end plate 90 and upstream blend stop 64 can be 0.050 millimeter to 0.075 millimeter.
In coating procedure, observed a beyond thought work characteristics.Even increase vacuum, bead can not be moved in the space between crooked composition surface 68 and motion rim 48 significantly yet.This just allows to use the getable bigger vacuum of squash type application means institute than prior art, thereby higher performance level accordingly is provided.Even requiring vacuum seldom or do not having the occasion of vacuum, the present invention still demonstrates the performance than all improvement of prior art device.Bead is not obvious enter between crooked composition surface 68 and the rim 48 the space this mean that also " outflow " effect on the heavy backing roll 50 of downstream coating is tantamount to the outflow effect of prior art extruding application means.
Figure 11 pushes the result of die and extruding die performance of the present invention coating test relatively with graphical representation one prior art.In these trials, the coating liquid that contains a kind of 1.8 centipoises of organic solvent is applied on the polyester film rim of a no decorative pattern.The performance judgment criterion is to surpass 15 to 60 meters/minute velocity interval, the minimum wet layer thickness when each of two kinds of platers is in four kinds of different coating gap levels.Curve A, B, C and D adopt the die of prior art and carry out with 0.254 millimeter, 0.203 millimeter, 0.152 millimeter and 0.127 millimeter respectively.Curve E, F, G and H adopt a kind of die of the present invention, same carry out when being coated with the lamellar spacing having respectively.Can be easy to see that the present invention that compares with the die of prior art has thin wet layer thickness level.Figure 12 is illustrated in the comparative test result that has a kind of similar coating liquid of 2.7 centipoise viscosity when being coated with the lamellar spacing equally.Can be clear that feature performance benefit of the present invention once more.
Figure 13 is the summary sheet that is applied to the data that obtain in several coating tests on non-staining polyester film rim by the liquid that will have seven kinds of different viscosities and contain different organic solvents.These results compare the squash type application means (prior art) of prior art and the present invention's (the present invention) performance.This performance criteria is mixed.Feature performance benefit of the present invention can rim rotating speed (V w), wet layer thickness (T w), be coated with in lamellar spacing, vacuum or their combination and find out.
A kind of measured value of application means performance is the ratio (G/T that is coated with lamellar spacing and wet layer thickness for specific coating liquid and rim rotating speed w).Figure 14 illustrates the G/T to a series of the present invention one squash type die of nine kinds of different coating liquid wConstant line and viscosity number.These liquid be when 30.5 meters/minute rim rotating speed, be applied to non-staining polyester film at the bottom of on.Because not ideal enough (leaving normal condition) it seems in the influence of other spreading power factor, some viscosity number.Calculate G/T at rim rotating speed by Figure 11 and 12 pairs 30.5 meters/minute wFour additivity energy lines have been increased after the value.From the top to the bottom, these performance solid lines are the G/T for the liquid of 2.7 centipoises that have that push die coating with a kind of prior art and 1.8 centipoises wAnd for G/T with the liquid of a kind of 2.7 concrete centipoises of extrusion die coating of the present invention and 1.8 centipoises wPerformance curve of the present invention has embodied its performance curve than the coating die of prior art and has had bigger G/T wValue.In addition, approach G/T respectively for performance curve of the present invention wThe constant line, its mean value is respectively 18.8 and 16.8.The performance line of known application means is presented at G/T on their length direction wValue has sizable variation.The present invention has than a lot of being used to of existing device improvement makes the coating bead remain on the operating characteristic of little wet thickness value.
Coating die of the present invention can be used as the high-performance liquid feedway that is used to roll with the soft-touch type application means.Figure 15 illustrates the application means of a usefulness one extruding die 40 with the backscrolling of three cylinders of coating liquid 14 supplies one throwing roller 330.Pass through die 40 owing to throw the surface of roller 330 on direction down, die 40 is reversed thereby vacuum chamber 42 is on groove and the coating bead.This does not influence coating performance.One metering donor rollers 332 is removed too much coating liquid, thereby a precise thickness layer is stayed on the throwing roller 330.One wing 334 removes unnecessary coating liquid and make it to fall into a liquids recovery dish 336 so that recycling from metering donor rollers 332.
Simultaneously, the bead centrifugation passes to the rim 48 that moves around backing roll 50 with coating liquid partly from throwing roller 330.After bead separated, one second wing 338 cleared left coating liquid and throws roller 330 and it is flowed in the recycling trays 336.Therefore perhaps, backing roll 50 can be topped with rubber, throws roller 330 and can contact with rim and all coating liquids on this zone are passed to rim.Then, second wing 338 can clean from any liquid on the throwing roller 330 outside the rim width.
Figure 16 illustrates one and adopts an extruding die 40 coating liquid to be supplied with the two cylinder return roller application means on the surface of the rim 48 that moves around the backing roll 14 that is a throwing roller that is wrapped.Metering donor rollers 332 goes unnecessary coating liquid from the surface of rim 48, thereby stays needed accurate wet coating.Wing 334 cleans and makes it to flow into recycling trays 336 from metering donor rollers 332 excess coating liquid.Employing makes vacuum window increase to more than 254 millimeters of water and liquid supplied with from 5.08 millimeters of water as this device of an example and is coated with the lamellar spacing and increases to 0.36 millimeter from 0.10 millimeter, improved stability thus and eliminated striped conscientiously.
Figure 17 illustrates a heliogravure application means that adopts an extruding die 40 coating liquid to be fed to the surface of a knurling roller 340.Die 40 has its vacuum chamber 42 on its spreading groove.One wing 342 goes from knurled pattern too much coating liquid so that the needed liquid measure that is coated with passes to the rim 48 that moves around the topped backing roll 314 of rubber.Excess coating liquid is by dish 336 recirculation.This method that coating liquid is fed to the knurling roller surface can also be used for the heliogravure coating of other form for example reverse, biasing with differential.
Figure 18 illustrates one and uses an extruding die 40 coating liquid to be supplied with the two drum extrusion application means that have from the surface of the throwing roller 330 of the stability of vacuum chamber 42.Thereby the coating liquid layer is thin and does not need a metering feed roller accurately.Bead separates directly facing to rim 48 generations around backing roll 314 motions.One wing 338 goes the unnecessary liquid of coating from throwing roller 330 and making it circulation by coiling 36.Therefore perhaps, backing roll 50 can be topped with rubber, throws roller 330 and can contact rim and will pass to rim at all coating liquids in this zone.Second wing 338 can clean any liquid from the throwing roller 330 outside the rim width then.
Figure 19 a illustrates a soft-touch type application means, and wherein an extruding die 40 is supplied with a transfer roller 344 by an inlet pipe 54 and groove 56 with coating liquid, for example a main shaft with 25.4 millimeters to 50.8 millimeters diameters in the scope.The coating bead is stablized by vacuum chamber 42.Touched transmission on rim 48, to form coating at the coating liquid on the transfer roller 344.The transfer roller 344 of minor diameter has a little delivery areas of touching, and owing to has reduced the vibration of rim and crossed the tension mark therefore have the rim stability more better than big transfer roller.The surface of transfer roller 344 can for example be smooth, through polishing, that medium milling is crossed, that bead is crossed or annular knurl crosses.
Figure 19 b illustrates a soft-touch type plater, and the extruding die 40 that wherein has a vacuum chamber 42 is supplied with coating liquid on the surface of transfer roller 344.This roller 344 has a diameter greater than the main shaft of Figure 19 a.Coating liquid is touched transmission to form coating on rim 48.
Figure 19 c illustrates a soft-touch type plater, and wherein a slidingtype coating die 310 is supplied with a surface of touching delivery roll 344 with coating liquid.Coating liquid is touched transmission to form coating on rim 48.
Figure 20 a illustrates a soft-touch type plater, and wherein pair of lamina extruding die 100 is supplied with a main shaft by passage 118,126 with two kinds of coating liquids 116,124, for example a transfer roller 344 with the diameter in 25.4 millimeters to 50.8 millimeters scopes.Be transmitted on rim 48, to form two coatings at two kinds of coating liquids on the transfer roller 344.
Figure 20 b illustrates a soft-touch type plater, and wherein pair of lamina extruding die 100 is supplied with a soft-touch type transfer roller 344 with coating liquid.The diameter of this roller 344 is greater than the diameter of the roller of Figure 20 a.Two coating liquids 116,124 are supplied to two kinds of coating liquids by two inlet pipes that separate that converge mutually and two grooves that separate and are passed on the rim to form wet coating on the coating bead.
Figure 20 c illustrates a soft-touch type plater, and wherein pair of lamina extruding die 100 is supplied with contact transfer roller 344 with coating liquid.Two coating liquids 116,124 by two inlet pipes that converge mutually in a die but only groove are supplied to.Transmitted on rim 48, to form two coatings at transfer roller 344 lip-deep two coating liquids.
Figure 20 d illustrates a soft-touch type plater, and wherein the die of a kind of laminated coating remodeling of the die 310 of Figure 19 c is fed to four kinds of coating liquids on the surface of transfer roller 344.By die 100 four kinds of liquid 116,124,346,348 are fed on the downward slidingsurface 236 to form four layers on the surface of transfer roller 344.These layers are transmitted to form four coatings on rim 48.

Claims (7)

1. one kind is used for liquid coating is applied to a die coating device on the rim of backing roll motion, and it comprises:
The one upstream blend stop 64 and with a band upstream lip 60 is with the die 40 of the downstream blend stop 66 of downstream lip 62, it is characterized in that described upstream lip forms a composition surface 68, and the downstream lip forms a sharp limit 70;
One at described upstream and downstream blend stop 64, pass the passage 52 of die between 66, described passage comprises a groove 56 that is formed by described upstream and downstream lip 60,62, its floating coat fluid from described groove discharge die with formation one continuous coating bead between upstream die lip, downstream die lip and coated surface and
One removes the metering donor rollers 332 that too much is coated with layer fluid from coated surface.
2. one kind is used for fluid coatings is applied to die coating device on the rim, and it comprises:
One roller 330 is coated with layer fluid and initially is coated atop on the described roller, and described roller then will be coated with layer fluid and be delivered on the rim;
One is used for removing the unnecessary removal device 338 that is coated with layer fluid from described roller, and wherein, described removal device contacts with described roller 330 to remove the too much layer fluid that is coated with;
One die 40, it is used for the coating fluid application to roller 330, and has the upstream blend stop 64 of a band upstream lip 60 and the downstream blend stop 66 of a band downstream lip 62, wherein, described upstream lip forms a composition surface 68, and the downstream lip forms a sharp limit 70; With
One passes the passage 52 of described die between upstream blend stop 64 and downstream blend stop 66; Described passage comprises a groove 56 that is formed by described upstream lip 60 and downstream lip 62, wherein, is coated with layer fluid and discharges die with formation one continuous coating bead between upstream die lip, downstream die lip and coated surface from described groove.
3. device as claimed in claim 2 is characterized in that, described removal device 338 comprises a wing.
4. device as claimed in claim 2 is characterized in that, described removal device comprises a metering donor rollers 332.
5. device as claimed in claim 3 is characterized in that, is touched at the coating liquid on the described roller to be delivered on the described rim 48.
6. the method for a die coating, described method comprises:
Make to be coated with layer fluid by a groove 56, described groove is to be with the downstream blend stop 66 of downstream lip 62 to form by the upstream blend stop 64 and of a band upstream lip 60, and described upstream lip forms a composition surface 68, and the downstream lip forms a sharp limit 70;
Improve coating performance by the direction that changes one of described composition surface 68 and sharp limit 70;
Removed the too much layer fluid that is coated with a contact from coated surface by the metering donor rollers 332 on spreading surface;
Select in combination with one another length L, a downstream blend stop on described composition surface corner A1, the downstream of spreading groove blend stop surface with by the die angle of attack A2 between the tangential plane of parallel on a coated surface and direct relative straight line with between sharp limit and coated surface, be coated with interlamellar spacing G with sharp limit; And
Select groove height H, multiple interocclusal clearance O and convergence C each other in combination.
7. method as claimed in claim 6, it is characterized in that, described method also is included in the upstream that is formed the coating bead and applies vacuum stablizing the step of bead, also can obviously not enter in the space between described composition surface and coated surface even increase the described bead of vacuum.
CN95192787A 1994-04-29 1995-03-17 Combination roll and die coating method and apparatus with improved die lip Expired - Fee Related CN1068250C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23656894A 1994-04-29 1994-04-29
US08/236,568 1994-04-29

Publications (2)

Publication Number Publication Date
CN1147216A true CN1147216A (en) 1997-04-09
CN1068250C CN1068250C (en) 2001-07-11

Family

ID=22890039

Family Applications (1)

Application Number Title Priority Date Filing Date
CN95192787A Expired - Fee Related CN1068250C (en) 1994-04-29 1995-03-17 Combination roll and die coating method and apparatus with improved die lip

Country Status (10)

Country Link
EP (1) EP0757595B1 (en)
JP (1) JP3777405B2 (en)
KR (1) KR970702757A (en)
CN (1) CN1068250C (en)
BR (1) BR9507568A (en)
CA (1) CA2187899A1 (en)
DE (1) DE69509651T2 (en)
MX (1) MX9605130A (en)
TW (1) TW301955U (en)
WO (1) WO1995029765A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100448551C (en) * 2006-08-18 2009-01-07 青岛美露亚工艺品有限公司 Automatic coating device of artificial pearl small ball
CN102029237A (en) * 2010-12-09 2011-04-27 黄文俊 Over-spray paint recovery device
CN105436018A (en) * 2015-11-24 2016-03-30 无锡普瑞腾传动机械有限公司 Improved painting equipment for painting line
CN105436017A (en) * 2015-11-24 2016-03-30 无锡普瑞腾传动机械有限公司 Painting equipment for painting line

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6168682B1 (en) 1998-02-10 2001-01-02 3M Innovative Properties Company Method of manufacturing an optical recording medium
US6531025B1 (en) 1998-08-03 2003-03-11 The Procter & Gamble Company Gravure roll printing process for adhesive application for disposable absorbent articles
EP0978263A1 (en) * 1998-08-03 2000-02-09 The Procter & Gamble Company Improved adhesive printing process for disposable absorbent articles
US6531027B1 (en) * 1998-08-03 2003-03-11 The Procter & Gamble Company Adhesive printing process for disposable absorbent articles
JP2001310151A (en) * 2000-05-01 2001-11-06 Yokoyama Seisakusho:Kk Slit coater
US7097673B2 (en) 2001-06-07 2006-08-29 3M Innovative Properties Company Coating edge control
US6813820B2 (en) 2001-12-19 2004-11-09 3M Innovative Properties Company Method of improving coating uniformity
US6720025B2 (en) 2002-07-01 2004-04-13 3M Innovative Properties Company Slot extrusion coating methods
EP1663510A1 (en) 2003-09-17 2006-06-07 3M Innovative Properties Company Methods for forming a coating layer having substantially uniform thickness, and die coaters
DE102005004891A1 (en) 2005-02-03 2006-08-10 Man Roland Druckmaschinen Ag Device for transporting printing paper rolls
DE102005006064A1 (en) * 2005-02-10 2006-08-24 Man Roland Druckmaschinen Ag Device for applying a fluid to a printing plate
JP2006255660A (en) * 2005-03-18 2006-09-28 Fuji Photo Film Co Ltd Coating method and coater
JP3970915B2 (en) * 2005-09-29 2007-09-05 日東電工株式会社 Method for producing optical functional film
JP5540539B2 (en) * 2009-03-25 2014-07-02 Ｔｄｋ株式会社 Liquid coating apparatus and coating method
KR20120072201A (en) * 2010-12-23 2012-07-03 한국전자통신연구원 Method for fabricating polarizer
JP2013099708A (en) * 2011-11-08 2013-05-23 Jfe Steel Corp Method and device for roll-coating to ribbon-like substrate
CN105665232B (en) * 2016-04-14 2018-01-26 江苏中邦输送带有限公司 A kind of Teflon adhesive tape glues the adjustable dip molding machine of thickness
EP3476495A1 (en) * 2017-10-26 2019-05-01 RAMPF Holding GmbH & Co. KG Slot die, coating arrangement comprising such a slot die, and cleaning device for such a slot die
DE102019113819A1 (en) * 2019-05-23 2020-11-26 Airbus Operations Gmbh Device for paint application
CN110586405A (en) * 2019-08-01 2019-12-20 安徽辉盛机电科技股份有限公司 Novel coating machine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE678130A (en) * 1965-04-08 1966-09-21
GB1192515A (en) * 1967-05-22 1970-05-20 Maxime Georges Willynck Improvements in or relating to Coating Devices
US4245582A (en) * 1979-02-02 1981-01-20 Beloit Corporation Adjustable rod holder for metering rod coaters
JPS5617661A (en) * 1979-07-23 1981-02-19 Fuji Photo Film Co Ltd Painting method
US4445458A (en) * 1982-07-21 1984-05-01 E. I. Du Pont De Nemours And Company Beveled edge metered bead extrusion coating apparatus
US4912948A (en) * 1985-03-22 1990-04-03 Union Carbide Chemicals And Plastics Company Inc. Vacuum guide used in flexible sheet material treatment
US4774109A (en) * 1987-07-21 1988-09-27 Nordson Corporation Method and apparatus for applying narrow, closely spaced beads of viscous liquid to a substrate
US5186753A (en) * 1990-07-10 1993-02-16 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Fountain coater
US5318804A (en) * 1991-11-06 1994-06-07 Konica Corporation Extrusion type coater and coating method
JP2684485B2 (en) * 1992-02-13 1997-12-03 富士写真フイルム株式会社 Coating device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100448551C (en) * 2006-08-18 2009-01-07 青岛美露亚工艺品有限公司 Automatic coating device of artificial pearl small ball
CN102029237A (en) * 2010-12-09 2011-04-27 黄文俊 Over-spray paint recovery device
CN105436018A (en) * 2015-11-24 2016-03-30 无锡普瑞腾传动机械有限公司 Improved painting equipment for painting line
CN105436017A (en) * 2015-11-24 2016-03-30 无锡普瑞腾传动机械有限公司 Painting equipment for painting line

Also Published As

Publication number Publication date
JP3777405B2 (en) 2006-05-24
WO1995029765A1 (en) 1995-11-09
DE69509651D1 (en) 1999-06-17
EP0757595B1 (en) 1999-05-12
CN1068250C (en) 2001-07-11
BR9507568A (en) 1997-08-05
KR970702757A (en) 1997-06-10
TW301955U (en) 1997-04-01
JPH10500354A (en) 1998-01-13
EP0757595A1 (en) 1997-02-12
DE69509651T2 (en) 2000-03-09
CA2187899A1 (en) 1995-11-09
MX9605130A (en) 1997-08-30

Similar Documents

Publication Publication Date Title
CN1068250C (en) Combination roll and die coating method and apparatus with improved die lip
CN1184015C (en) Multilayer sliding mould coating method
US5639305A (en) Die coating method and apparatus
CN1301197A (en) Pressure feed coating application system
DE60206244T2 (en) PROCESS AND DEVICE FOR COATING WITH "PICK AND PLACE" EQUIPMENTS WITH SAME OR SUBSTANTIALLY SAME PERIODS
CN1067299C (en) Die coating method and apparatus
EP2052787A2 (en) Coating method and coating apparatus
US5759274A (en) Die coating apparatus with surface covering
MXPA96005130A (en) Method and apparatus for cladding in combination, by rolling and troquel, with better trimming
CN1104289C (en) Method, system and use for applying lacquer
FR2814688A1 (en) METHOD AND APPARATUS FOR CONTINUOUSLY COATING AT LEAST ONE FACE OF A METAL BAND BY A SINGLE FLUID FILM OR A MULTILAYER OF POLYMERIC RETICULABLE POLYMERS
US7819077B2 (en) Die coaters
RU2089696C1 (en) Apparatus for painting paper with water-base colors
CN1262355C (en) Squeezing nozzle and coater using same
DE69721056T2 (en) DEVICE AND METHOD FOR MINIMIZING THE DRYING OF A COATING LIQUID ON A SLIDING FUNNEL
JP2009240972A (en) Painting method to metal band
EP0649053A1 (en) Extrusion-type coating equipment for uniformly applying a coating fluid to a support surface
EP1100671A1 (en) Method of fabricating die coater parts
CN1169628C (en) Method and apparatus of coating moving substrate surface
CN1297401C (en) Process and device for forming and producing self adhesive water-proof coiled material
US20120049405A1 (en) Method for manufacturing coating rod
JP5564975B2 (en) Coating film forming method and coating film laminate manufacturing method
CN1155346A (en) Differential-speed gravure coating of magnetizable layers in manufacture of magnetic recording media
JPH0567341B2 (en)
JPH0614188B2 (en) Method and apparatus for coating electrophotographic recording material substrate, etc.

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee