United States Patent [19]
`[19]
`United States Patent
`Hefele (cid:9)
`Hefele
`
`US005101759A
`111111111111111111111111111 91,!!!1711,191111111111111111111111111111
`US005101759A
`5,101,759
`[11] Patent Number: (cid:9)
`5,101,759
`[ii] Patent Number:
`Apr. 7, 1992
`[45] Date of Patent: (cid:9)
`Apr. 7, 1992
`[45] Date of Patent:
`
`[54] METHOD AND DEVICE FOR FORMING A
`[54] METHOD AND DEVICE FOR FORMING A
`GRID-LIKE COATING ON WEB-LIKE
`GRID-LIKE COATING ON WEB-LIKE
`FLEXIBLE PLANAR MEMBERS AND
`FLEXIBLE PLANAR MEMBERS AND
`PRODUCTS THEREOF
`PRODUCTS THEREOF
`[75] Inventor: Josef Hefele, Grafelfing, Fed. Rep.
`Josef Hefele, Grafelfing, Fed. Rep.
`Inventor:
`[75]
`of Germany
`of Germany
`[73] Assignee: Kufner Textilwerke GmbH, Munich,
`[73] Assignee: Kufher Textilwerke GmbH, Munich,
`Fed. Rep. of Germany
`Fed. Rep. of Germany
`
`[21] Appl. No.: 428,844
`[21] Appl. No.: 428,844
`Oct. 30, 1989
`[22] Filed: (cid:9)
`Oct. 30, 1989
`[22] Filed:
`[30] (cid:9)
`Foreign Application Priority Data
`Foreign Application Priority Data
`[30]
`Oct. 28, 1988 [EP] European Pat. Off. (cid:9)
`(cid:9)
`European Pat. Off.
`Oct. 28, 1988 [EPJ
`
` 88117995
`88117995
`
`Int. CL5 (cid:9)
`[51]
`(cid:9)
`Int. CI.'
`[51]
`[52] U.S. Cl (cid:9)
`[52] U.S. CI(cid:9)
`
`
`
`
`[58] Field of Search (cid:9)
`[58] Field of Search (cid:9)
`
`BO5C 1/08
`B05C 1/08
`118/202; 29/132;
`118/202; 29/132;
`118/212; 118/249; 118/258
`118/212; 118/249; 118/258
` 118/202, 212, 249, 258;
`118/202, 212, 249, 258;
`29/132
`29/132
`
`[56]
`[56]
`
`References Cited
`References Cited
`U.S. PATENT DOCUMENTS
`U.S. PATENT DOCUMENTS
`3.067,056 12/1962 Remer (cid:9)
`3.067,056 12/1962 Renter (cid:9)
`3.086,879 (cid:9) 4/1963 Lassiter (cid:9)
`3,086,879 4/1963 Lassiter (cid:9)
`4,292,104 (cid:9) 9/1981 Heimbach et a1. (cid:9)
`9/1981 Heimbach et al (cid:9)
`4,292,104
`3/1982 Chase et al. (cid:9)
`4,317,265 (cid:9)
`3/1982 Chase et al (cid:9)
`4,317,265
`4,876,777 10/1989 Chow (cid:9)
`4,876,777 10/1989 Chow (cid:9)
`
` 118/212
`118/212
` 118/212
`118/212
` 118/212
`118/212
`29/132
`
`29/132
`29/132
`
`29/132
`
`FOREIGN PATENT DOCUMENTS
`FOREIGN PATENT DOCUMENTS
`360365 4/1962 Sweden .
`4/1962 Sweden .
`360365
`
`Primary Examiner—Michael Wityshyn
`Primary Examiner— Michael Wityshyn
`Attorney, Agent, or Firm—Scully, Scott, Murphy &
`Attorney, Agent, or Firm —Scully, Scott, Murphy &
`Presser
`Presser
`
`ABSTRACT
`[57] (cid:9)
`ABSTRACT
`[57]
`Method and device for forming grid-like coatings on
`Method and device for forming grid-like coatings on
`web-like flexible planar structures and manufactured
`web-like flexible planar structures and manufactured
`products thereof.
`products thereof.
`The invention relates to a method and device for form-
`The invention relates to a method and device for form
`ing grid-like coatings on web-like flexible planar struc-
`ing grid-like coatings on web-like flexible planar struc
`tures with fusion adhesives in the powder gravure
`tures with fusion adhesives in the powder gravure
`method by spreading fusion adhesive powder in the
`method by spreading fusion adhesive powder in the
`depressions of a rotating gravure roller (1) and transfer-
`depressions of a rotating gravure roller (1) and transfer
`ring the gravure powder fillings onto the planar struc-
`ring the gravure powder fillings onto the planar struc
`ture (8) with the use of a rotating heater roller (5)
`ture (8) with the use of a rotating heater roller (5)
`pressed onto the gravure roller. The invention is based
`pressed onto the gravure roller. The invention is based
`on the object of so configuring a method and a device of
`on the object of so configuring a method and a device of
`this type that without additional expenditure they pre-
`this type that without additional expenditure they pre
`vent the necessity for using additional web-like carrier
`vent the necessity for using additional web-like carrier
`strips for transferring the raster-like coating from the
`strips for transferring the raster-like coating from the
`gravure roller onto the surface construction finally to
`gravure roller onto the surface construction finally to
`be coated. For this purpose, the powder fillings in the
`be coated. For this purpose, the powder fillings in the
`depressions of the gravure roller are first transferred to
`depressions of the gravure roller are first transferred to
`the surface of the heater roller (5) pressed directly and
`the surface of the heater roller (5) pressed directly and
`forcibly onto this roller (1) and from here are trans-
`forcibly onto this roller (1) and from here are trans
`ferred with use of a further rotating roller (9), pressed
`ferred with use of a further rotating roller (9), pressed
`onto the heater roller with slight pressure, onto the
`onto the heater roller with slight pressure, onto the
`planar structure guided between this and the heater
`planar structure guided between this and the heater
`roller.
`roller.
`
`10 Claims, 1 Drawing Sheet
`10 Claims, 1 Drawing Sheet
`
`Petitioner - Owens Corning
`Ex. 1004, p. 1 of 4
`
`(cid:9)
`

`

`U.S. Patent
`U.S. Patent
`
`Apr. 7, 1992
`Apr. 7, 1992
`
`5,101,759
`5,101,759
`
`Fig.2 10 (cid:9)
`Fig. 2
`
`8
`
`V $ Y,IP -4 "gre rS/7X i i (cid:9)
`
`• 1
`
`Fig.3
`Fig. 3
`
`10 8
`
`Petitioner - Owens Corning
`Ex. 1004, p. 2 of 4
`
`(cid:9)
`(cid:9)
`

`

`METHOD AND DEVICE FOR FORMING A
`METHOD AND DEVICE FOR FORMING A
`GRID-LIKE COATING ON WEB-LIKE FLEXIBLE
`GRID-LIKE COATING ON WEB-LIKE FLEXIBLE
`PLANAR MEMBERS AND PRODUCTS THEREOF
`PLANAR MEMBERS AND PRODUCTS THEREOF
`
`5
`5
`
`Method and device for forming a grid-like coating on
`Method and device for forming a grid-like coating on
`web-like flexible planar members and products thereof.
`web-like flexible planar members and products thereof.
`The present invention relates to a method and to a
`The present invention relates to a method and to a
`device for forming grid-like layers on web-like flexible
`device for forming grid-like layers on web-like flexible
`planar members with fusion adhesives in the powder 10
`planar members with fusion adhesives in the powder 10
`point gravure printing method and to manufactured
`point gravure printing method and to manufactured
`products thereof.
`products thereof.
`Various methods are known for forming grid-like
`Various methods are known for forming grid-like
`coatings, particularly dot screen coatings, on flexible
`coatings, particularly dot screen coatings, on flexible
`planar structures such as weaves, textiles, woven textile 15
`planar structures such as weaves, textiles, woven textile 15
`goods, fleeces, foam materials, synthetic leather, foils
`foam materials, synthetic leather, foils
`fleeces,
`goods,
`etc. These methods operate either according to the
`etc. These methods operate either according to the
`screen printing method with pastes, or according to the
`screen printing method with pastes, or according to the
`gravure printing method with powders. In tis connec-
`gravure printing method with powders. In tis connec
`tion, these two basic modes of operation are combined 20
`tion, these two basic modes of operation are combined 20
`with other coating methods, for example with spray
`with other coating methods, for example with spray
`coating or roll coating.
`coating or roll coating.
`Other coating methods are also known in which the
`Other coating methods are also known in which the
`grid-like coating is first applied to a carrier and is then
`grid-like coating is first applied to a carrier and is then
`transferred from the carrier onto the actual planar struc- 25
`transferred from the carrier onto the actual planar struc- 25
`ture to be coated. For example, from DE-B-2536911 a
`ture to be coated. For example, from DE-B-2536911 a
`method is known for forming a powder coating as a
`method is known for forming a powder coating as a
`grid-like netting on silicone carriers and transferring the
`grid-like netting on silicone carriers and transferring the
`coating onto batches of garments by ironing on the
`coating onto batches of garments by ironing on the
`coated papers and peeling off the carrier. A dot screen- 30
`coated papers and peeling off the carrier. A dot screen- 30
`like coating on an adhesive repellent carrier paper is
`like coating on an adhesive repellent carrier paper is
`furthermore described by DE-A-2810042 and also such
`furthermore described by DE-A-28 10042 and also such
`a dot-like coating is known from EP-A-219378 by appli-
`a dot-like coating is known from EP-A-2 19378 by appli
`cation of a grid-like dispersion paste onto an anti-adhe-
`cation of a grid-like dispersion paste onto an anti-adhe
`sive transfer carrier and transfer of the adhesive points 35
`sive transfer carrier and transfer of the adhesive points 35
`onto web-like planar structures.
`onto web-like planar structures.
`In many cases, these known transfer coatings exhibit
`In many cases, these known transfer coatings exhibit
`advantages in that the coating points can be formed
`the coating points can be formed
`advantages in that
`exactly and transferred onto surface constructions,
`exactly and transferred onto surface constructions,
`which are not coatable or coatable only with difficulty 40
`which are not coatable or coatable only with difficulty 40
`in the direct coating method or exhibit in the direct
`in the direct
`in the direct coating method or exhibit
`coating process too great a tendency for the coating
`coating process too great a tendency for the coating
`points to be retained by the coating carrier. Moreover,
`points to be retained by the coating carrier. Moreover,
`the previously known methods of operation are incon-
`the previously known methods of operation are incon
`venient when they are applied to the coating of web- 45
`venient when they are applied to the coating of web- 45
`like planar constructions such as for example web-like
`like planar constructions such as for example web-like
`interlining materials.
`interlining materials.
`Thus the transfer carrier according to EP-A1-0219378
`Thus the transfer carrier according to EP-A1-0219378
`must be adjusted exactly to the surface of the web to be
`must be adjusted exactly to the surface of the web to be
`coated and after the transfer process must be wound up 50
`coated and after the transfer process must be wound up 50
`and cleaned. Also seam locations in the transfer carrier
`and cleaned. Also seam locations in the transfer carrier
`always cause problems. If the carrier web is guided as
`always cause problems. If the carrier web is guided as
`an endless web in a loop, it is true that winding up is
`an endless web in a loop, it is true that winding up is
`unnecessary. In spite of this it is however difficult to
`unnecessary. In spite of this it is however difficult to
`guide the web exactly and without distortion and to 55
`guide the web exactly and without distortion and to 55
`connect it to the connection position without shock.
`connect it to the connection position without shock.
`Also compression folds can occur.
`Also compression folds can occur.
`The invention is therefore based on the object of
`The invention is therefore based on the object of
`providing a method and a device for forming grid-like
`providing a method and a device for forming grid-like
`coatings on web-like flexible planar structures with 60
`coatings on web-like flexible planar structures with 60
`fusion adhesives using powder point gravure printing,
`fusion adhesives using powder point gravure printing,
`which can be performed in a similar manner to the
`which can be performed in a similar manner to the
`known coating methods without significant additional
`known coating methods without significant additional
`expenditure and prevents the necessity for using web-
`expenditure and prevents the necessity for using web
`like carrier strips. (cid:9)
`like carrier strips.
`This object is achieved with a method and a device of
`This object is achieved with a method and a device of
`the type initially described in which according to the
`the type initially described in which according to the
`invention fusion adhesive powder fillings spread into
`invention fusion adhesive powder fillings spread into
`
`65
`65
`
`1
`1
`
`5,101,759
`5,101,759
`
`2
`the depressions of a gravure roller are transferred first
`the depressions of a gravure roller are transferred first
`to the surface of a heated drum pressed directly and
`to the surface of a heated drum pressed directly and
`forcibly onto the gravure roller and from here with the
`forcibly onto the gravure roller and from here with the
`use of a further rotating roller are pressed onto the
`use of a further rotating roller are pressed onto the
`heated roller with slight pressure and are transferred
`heated roller with slight pressure and are transferred
`onto the planar structure passed between this and the
`onto the planar structure passed between this and the
`heated roller.
`heated roller.
`The application pressure of this further roller via the
`The application pressure of this further roller via the
`planar structure onto the heated roller should thus be
`planar structure onto the heated roller should thus be
`such that it is substantially smaller than the application
`such that it is substantially smaller than the application
`pressure of the heated roller onto the gravure roller.
`pressure of the heated roller onto the gravure roller.
`Thus, for example, the heated roller can be pressed with
`Thus, for example, the heated roller can be pressed with
`a pressure of 1000 p/cm onto the gravure roller, whilst
`a pressure of 1000 p/cm onto the gravure roller, whilst
`the further roller should be pressed via the planar struc-
`the further roller should be pressed via the planar struc
`ture onto the heated roller with a pressure of about 50
`ture onto the heated roller with a pressure of about 50
`p/cm.
`p/cm.
`Expediently, the heated roller has an anti-adhesive
`Expediently, the heated roller has an anti-adhesive
`rubber-like surface onto which the powder fillings of
`rubber-like surface onto which the powder fillings of
`the gravure roller can be transferred by pressure. This
`the gravure roller can be transferred by pressure. This
`surface can be formed by a roller coating which has a
`surface can be formed by a roller coating which has a
`thickness of I-10 mm and can consist of a soft com-
`thickness of 1-10 mm and can consist of a soft com
`pletely vulcanised silicone rubber layer. In order to
`In order to
`pletely vulcanised silicone rubber layer.
`achieve good heat conduction through the layer, it can
`achieve good heat conduction through the layer, it can
`contain heat conductive fillers such as soot, metal pow-
`contain heat conductive fillers such as soot, metal pow
`der, metal oxide powder or the like.
`der, metal oxide powder or the like.
`It is also expedient to provide the gravure roller with
`It is also expedient to provide the gravure roller with
`a thin baked separation film on the basis of tetrafluoro-
`a thin baked separation film on the basis of tetrafluoro-
`ethylene, in order to promote the transfer of powder
`ethylene, in order to promote the transfer of powder
`fillings onto the silicone rubber layer.
`fillings onto the silicone rubber layer.
`In order to cause completely reliable operation of the
`In order to cause completely reliable operation of the
`subsequent transfer process of the powder agglomer-
`subsequent transfer process of the powder agglomer
`ates, which have been released from the depressions of
`ates, which have been released from the depressions of
`the gravure roller and sintered on the surface of the
`the gravure roller and sintered on the surface of the
`heating roller, onto the preferably web-like surface, it is
`heating roller, onto the preferably web-like surface, it is
`expedient to use fusion adhesive powder which com-
`expedient to use fusion adhesive powder which com
`prises a small proportion of about 0.1-2% fatty acids,
`prises a small proportion of about 0.1-2% fatty acids,
`for example palmitic acid, stearic acid or behenic acid
`for example palmitic acid, stearic acid or behenic acid
`finely dispersed.
`finely dispersed.
`The transfer process is to take place with slight appli-
`The transfer process is to take place with slight appli
`cation of pressure which is produced by the further
`cation of pressure which is produced by the further
`rotating roller provided for the heated roller and be-
`rotating roller provided for the heated roller and be
`tween which and the heated roller the planar structure
`tween which and the heated roller the planar structure
`is reciprocated. During this transfer process, flattening
`is reciprocated. During this transfer process, flattening
`of the powder agglomerates forming the coating takes
`of the powder agglomerates forming the coating takes
`place. Too great a flattening can be prevented by appro-
`place. Too great a flattening can be prevented by appro
`priate choice of a low application pressure of the roller.
`priate choice of a low application pressure of the roller.
`The fusion adhesive masses suitable for the transfer
`The fusion adhesive masses suitable for the transfer
`process are the same as are applicable in the known
`process are the same as are applicable in the known
`method mentioned initially. Powders on the basis of
`method mentioned initially. Powders on the basis of
`copolyesters, copolyamides and polyethylenes and their
`copolyesters, copolyamides and polyethylenes and their
`mixtures are suitable. Also the particle sizes are the
`mixtures are suitable. Also the particle sizes are the
`same.
`same.
`The engraving and the coating can be configured in
`The engraving and the coating can be configured in
`dot form, bar form or grid form.
`dot form, bar form or grid form.
`The process conditions are practically the same as in
`The process conditions are practically the same as in
`the above mentioned known powder point gravure
`the above mentioned known powder point gravure
`roller coating method, in which the gravure roller tem-
`roller coating method, in which the gravure roller tem
`peratures should lie in the temperature range of about
`peratures should lie in the temperature range of about
`30°-90° C. and the heated roller temperatures in the
`30*-90' C. and the heated roller temperatures in the
`temperature range of 1400°-240° C. according to the
`temperature range of 1400"-240* C. according to the
`type of fusion adhesive employed.
`type of fusion adhesive employed.
`With the method according to the invention and the
`With the method according to the invention and the
`device according to the invention a wide variety of
`device according to the invention a wide variety of
`surface structures can be coated, even those which as a
`surface structures can be coated, even those which as a
`result of a hairy or open mesh construction cannot be
`result of a hairy or open mesh construction cannot be
`coated or can only be coated with difficulty in the di-
`coated or can only be coated with difficulty in the di
`rect coating method. Coated interlining materials on the
`rect coating method. Coated interlining materials on the
`basis of weaves, textiles, woven textile goods, fleeces,
`basis of weaves, textiles, woven textile goods, fleeces,
`
`Petitioner - Owens Corning
`Ex. 1004, p. 3 of 4
`
`

`

`5,101,759
`5,101,759
`
`3
`knitted fleeces, and woven knitted fleeces can be manu-
`knitted fleeces, and woven knitted fleeces can be manu
`factured. Even coated synthetic leather, foils, papers,
`factured. Even coated synthetic leather, foils, papers,
`and foam materials can be produced without problems.
`and foam materials can be produced without problems.
`In the drawing, a particularly advantageous exem-
`In the drawing, a particularly advantageous exem
`plary embodiment of the device according to the inven- 5
`plary embodiment of the device according to the inven-
`5
`tion as well as a material web coated with this device
`tion as well as a material web coated with this device
`are schematically illustrated, which will be described in
`are schematically illustrated, which will be described in
`more detail in the following:
`more detail
`in the following:
`
`4
`tion of the cup-shaped depressions 2 on the surface of
`tion of the cup-shaped depressions 2 on the surface of
`the gravure roller. According to the desired type of
`the gravure roller. According to the desired type of
`coated grid on the planar structure, these depressions 2
`coated grid on the planar structure, these depressions 2
`on the surface of the gravure roller 1 must therefore be
`on the surface of the gravure roller 1 must therefore be
`correspondingly arranged and configured.
`correspondingly arranged and configured.
`I claim:
`I claim:
`1. Coating apparatus for forming grid-like coatings on
`1. Coating apparatus for forming grid-like coatings on
`web-like flexible planar structures with fusion adhesives
`web-like flexible planar structures with fusion adhesives
`in the powder point gravure method, comprising: a
`in the powder point gravure method, comprising: a
`rotatable gravure roller heated to about 300-90° C. with
`rotatable gravure roller heated to about 30°-90° C. with
`a surface having depressions arranged in a grid form
`a surface having depressions arranged in a grid form
`according to the desired coating; a rotatable heated
`according to the desired coating; a rotatable heated
`roller heated to about 140° C.-240° C. and coated with
`roller heated to about 140"' C.-240° C. and coated with
`an anti-adhesive rubber surface, arranged to be pressed
`an anti-adhesive rubber surface, arranged to be pressed
`onto said gravure roller resulting in a transfer of pow-
`onto said gravure roller resulting in a transfer of pow
`der fillings from the gravure roller to the rubber sur-
`der fillings from the gravure roller to the rubber sur
`face; means for filling the depressions of the gravure
`face; means for filling the depressions of the gravure
`roller with fusion adhesive powder; and a further rotat-
`roller with fusion adhesive powder; and a further rotat
`able roller arranged in relation to the heated roller in
`able roller arranged in relation to the heated roller in
`such manner that between the further rotatable roller
`such manner that between the further rotatable roller
`and the heater roller the planar structure to be coated
`and the heater roller the planar structure to be coated
`can be guided, the arrangement of the rollers being such
`can be guided, the arrangement of the rollers being such
`that the application pressure of said further roller via
`that the application pressure of said further roller via
`the planar structure onto the heater roller is substan-
`the planar structure onto the heater roller is substan
`tially smaller in operation than the pressure of applica-
`tially smaller in operation than the pressure of applica
`tion of the heater roller onto the gravure roller.
`tion of the heater roller onto the gravure roller.
`2. An apparatus according to claim 1 wherein the
`2. An apparatus according to claim 1 wherein the
`further roller presses the planar surface to be coated
`further roller presses the planar surface to be coated
`onto a peripheral portion of the heater roller the further
`onto a peripheral portion of the heater roller the further
`roller being positioned so as to contact the heated roller
`roller being positioned so as to contact the heated roller
`at a point at least 180° C. from a point of contact be-
`at a point at least 180° C. from a point of contact be
`tween the heater roller and the gravure roller measured
`tween the heater roller and the gravure roller measured
`in a direction of rotation of the heater roller.
`in a direction of rotation of the heater roller.
`3. An apparatus according to claim 1 wherein the
`3. An apparatus according to claim 1 wherein the
`anti-adhesive rubber surface of the heater roller is
`anti-adhesive rubber surface of the heater roller is
`formed from a rubber coating which has a thickness of
`formed from a rubber coating which has a thickness of
`1-10 mm.
`1-10 mm.
`4. An apparatus according to claim 1 wherein said
`4. An apparatus according to claim 1 wherein said
`rubber surface on the heater roller is formed of silicone
`rubber surface on the heater roller is formed of silicone
`rubber.
`rubber.
`5. An apparatus according to claim 1 wherein said
`5. An apparatus according to claim 1 wherein said
`rubber surface on the heater roller consists of soft rub-
`rubber surface on the heater roller consists of soft rub
`ber which is filled with heat conductive filler.
`ber which is filled with heat conductive filler.
`6. An apparatus according to claim 1 wherein the
`6. An apparatus according to claim 1 wherein the
`gravure roller has on the surface of its depressions a thin
`gravure roller has on the surface of its depressions a thin
`separating film layer for easy removal of the powder
`separating film layer for easy removal of the powder
`fillings from these depressions.
`fillings from these depressions.
`7. An apparatus according to claim 6 wherein the
`7. An apparatus according to claim 6 wherein the
`material of the separating film layer is based on tetraflu-
`materia] of the separating film layer is based on tetraflu-
`oroethylene.
`oroethylene.
`8. An apparatus according to claim 1 wherein the
`8. An apparatus according to claim 1 wherein the
`depressions are arranged and configured in the surface
`depressions are arranged and configured in the surface
`of the gravure roller according to a desired grid-like
`of the gravure roller according to a desired grid-like
`coating having punctiform, linear form perpendicular
`coating having punctiform, linear form perpendicular
`to the longitudinal axis of the planar structure, linear
`to the longitudinal axis of the planar structure, linear
`form parallel to the longitudinal axis of the planar struc-
`form parallel to the longitudinal axis of the planar struc
`ture of grid form.
`ture of grid form.
`9. An apparatus according to claim 1 wherein the
`9. An apparatus according to claim 1 wherein the
`further roller maintains a temperature below about 100°
`further roller maintains a temperature below about 100°
`C.
`C.
`10. An apparatus according to claim 9 wherein the
`10. An apparatus according to claim 9 wherein the
`further roller is cooled by a cooling means to maintain
`further roller is cooled by a cooling means to maintain
`a preferred temperature of below about 100° C.
`a preferred temperature of below about 100° C.
`• * • •
`
`15
`15
`
`40
`40
`
`BRIEF DESCRIPTION OF THE DRAWINGS 10
`BRIEF DESCRIPTION OF THE DRAWINGS
`10
`FIG. 1 shows this device in a schematic illustration
`FIG. 1 shows this device in a schematic illustration
`partially in section and partially in side view;
`partially in section and partially in side view;
`FIG. 2 is a longitudinal section through a surface
`FIG. 2 is a longitudinal section through a surface
`construction coated with this device in an enlarged
`construction coated with this device in an enlarged
`broken away representation; and (cid:9)
`broken away representation; and
`FIG. 3 shows a portion of FIG. 2 with even greater
`FIG. 3 shows a portion of FIG. 2 with even greater
`magnification.
`magnification.
`The device illustrated in FIG. 1 comprises a funnel-
`The device illustrated in FIG. 1 comprises a funnel-
`shaped supply container 3 for powdery fusion adhesive
`shaped supply container 3 for powdery fusion adhesive
`4 above the gravure roller 1, which is provided on its 20
`4 above the gravure roller 1, which is provided on its 20
`cylindrical surface with cup-shaped depressions 2 and is
`cylindrical surface with cup-shaped depressions 2 and is
`rotatable about its axis. This funnel is located directly
`rotatable about its axis. This funnel
`is located directly
`on the gravure roller 1 and is open at its bottom so thit
`on the gravure roller 1 and is open at its bottom so that
`the fusion adhesive powder 4 can flow out during
`the fusion adhesive powder 4 can flow out during
`movement of the surface of the gravure roller into the 25
`movement of the surface of the gravure roller into the 25
`depressions 2 located therein. A doctor blade secured
`depressions 2 located therein. A doctor blade secured
`on the wall of the funnel and applied tangentially onto
`on the wall of the funnel and applied tangentially onto
`the gravure roller ensures smooth spreading of the pow-
`the gravure roller ensures smooth spreading of the pow
`der introduced. The gravure roller is rotated in the
`der introduced. The gravure roller is rotated in the
`direction of the arrow so that the depressions 2 filled 30
`direction of the arrow so that the depressions 2 filled 30
`with fusion adhesive powder are moved away to a
`with fusion adhesive powder are moved away to a
`heated roller 5 which is heatable and has an anti-adhe-
`heated roller 5 which is beatable and has an anti-adhe
`sive rubber coating 6. This heater roller 5, which rotates
`sive rubber coating 6. This heater roller 5, which rotates
`in the direction of the arrow illustrated in FIG. 1 in
`in the direction of the arrow illustrated in FIG. 1 in
`conformity with the gravure roller 1, is pressed rela- 35
`conformity with the gravure roller 1,
`is pressed rela- 35
`tively strongly onto the gravure roller, whereby the
`lively strongly onto the gravure roller, whereby the
`powder fillings located in the depressions 2 of the gra-
`powder fillings located in the depressions 2 of the gra
`vure roller are transferred onto the rubber coating 6 of
`vure roller are transferred onto the rubber coating 6 of
`the heater roller and there remain as powder agglomer-
`the heater roller and there remain as powder agglomer
`ate 7. (cid:9)
`ate 7.
`The gravure roller 1 has on the surface, particularly
`The gravure roller 1 has on the surface, particularly
`of its depressions a thin separating film layer for easy
`of its depressions a thin separating film layer for easy
`removal of the powder fillings from these depressions,
`removal of the powder fillings from these depressions,
`which can consist of material on the basis of tetrafluoro-
`which can consist of material on the basis of tetrafluoro-
`ethylene. (cid:9)
`ethylene.
`On the side of the heater roller 5 lying opposite to the
`On the side of the heater roller 5 lying opposite to the
`gravure roller the planar structure 8 to be coated is
`gravure roller the planar structure 8 to be coated is
`guided in the form of, for example, textile material web
`guided in the form of, for example, textile material web
`8 across a pre-heating roller 11 and between the heating
`8 across a pre-heating roller 11 and between the heating
`roller 5 and an associated further roller 9 which is so 50
`roller 5 and an associated further roller 9 which is so 50
`arranged that it presses the material web 8 only slightly
`arranged that it presses the material web 8 only slightly
`against the heating roller 5. The heater roller and pre-
`against the heating roller 5. The heater roller and pre
`heating roller are brought to a temperature of approxi-
`heating roller are brought to a temperature of approxi
`mately 140° to about 240° C. which ensures that the
`mately 140" to about 240° C. which ensures that the
`powder agglomerates 7 resting on their surface 6 sinter 55
`powder agglomerates 7 resting on their surface 6 sinter 55
`together. As a result of the slight pressure of the mate-
`together. As a result of the slight pressure of the mate
`rial web 8 against the heating roller 5 and its previous
`ria] web 8 against the heating roller 5 and its previous
`winding with the material web, these sintered powder
`winding with the material web, these sintered powder
`agglomerates are transferred to the material web, where
`agglomerates are transferred to the material web, where
`they form a somewhat flattened grid-like coating. The 60
`they form a somewhat flattened grid-like coating. The 60
`grid-like coating can be punctiform, in bar form or in
`grid-like coating can be punctiform, in bar form or in
`linear form. The arrangement and configuration of the
`linear form. The arrangement and configuration of the
`coating grid 10 on the surface construction 8 is of
`coating grid 10 on the surface construction 8 is of
`course determined by the arrangement and configura-
`course determined by the arrangement and configura-
`'
`
`45
`45
`
`65
`65
`
`Petitioner - Owens Corning
`Ex. 1004, p. 4 of 4
`
`