EP0074448B1 - Appareil de couchage d'une bande et méthode opératoire d'un couple de dispositifs applicateurs - Google Patents

Appareil de couchage d'une bande et méthode opératoire d'un couple de dispositifs applicateurs Download PDF

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Publication number
EP0074448B1
EP0074448B1 EP81304236A EP81304236A EP0074448B1 EP 0074448 B1 EP0074448 B1 EP 0074448B1 EP 81304236 A EP81304236 A EP 81304236A EP 81304236 A EP81304236 A EP 81304236A EP 0074448 B1 EP0074448 B1 EP 0074448B1
Authority
EP
European Patent Office
Prior art keywords
coater
coating
doctor blade
web
pan
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81304236A
Other languages
German (de)
English (en)
Other versions
EP0074448A1 (fr
Inventor
Wayne A. Damrau
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.)
NewPage Wisconsin System Inc
Original Assignee
Consolidated Papers Inc
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 Consolidated Papers Inc filed Critical Consolidated Papers Inc
Priority to AT81304236T priority Critical patent/ATE21534T1/de
Priority to DE8181304236T priority patent/DE3175164D1/de
Priority to EP81304236A priority patent/EP0074448B1/fr
Publication of EP0074448A1 publication Critical patent/EP0074448A1/fr
Application granted granted Critical
Publication of EP0074448B1 publication Critical patent/EP0074448B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/10—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with blades
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/0005—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating
    • D21H5/006—Controlling or regulating
    • D21H5/0062—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper
    • D21H5/0065—Regulating the amount or the distribution, e.g. smoothing, of essentially fluent material already applied to the paper; Recirculating excess coating material applied to paper with blades

Definitions

  • the invention relates to an apparatus and a method for supplying coating liquid to a paper coater, and more particularly, to an apparatus for supplying excess coating from a remote doctor blade or a coater having a doctor blade to another coater located on the same backing roll and to a method of operating a pair of coaters as described hereinafter.
  • each coater has often been provided with separate supply piping connected to a coating supply system (comprising, as is conventional, pumps, pump motors, tanks, filters, controls, piping and valving) to supply coating liquid to the two coaters.
  • a coating supply system comprising, as is conventional, pumps, pump motors, tanks, filters, controls, piping and valving
  • Any coating not applied to the web by either of the coaters has usually been collected from its respective coater and then returned, via separate piping to the coating supply system for reprocessing and eventual reuse.
  • the two coaters were in parallel with respect to the coating supply system. In such parallel arrangement, the coating supply system had to be of sufficient size to meet the cumulative demands of both coaters.
  • One object of the apparatus and method of the present invention is to supply coating to a coater from a doctor blade or another coater with such a blade, while being able to easily adjust the angle of the doctor blade to the backing roll.
  • an apparatus for coating a web of moving paper including a coater and an angularly movable, remote doctor blade both located on the same backing roll, the doctor blade being located above the coater, a coating supply system for supplying coating, and bridge means for collecting excess coating and transferring excess coating by gravity to the coater, characterised in that the bridge means comprises two portions hingedly connected together to accommodate change of the relative angular position of doctor blade on the web, one of said two portions of the bridge means being mounted to move with the remote doctor blade, and the other of said two portions of said bridge means being adapted to extend from said one portion to the first coater, whereby the angular position of the doctor blade can be changed with the bridge means automatically compensating for such a position change.
  • a second coater is located between the first coater and the remote doctor blade.
  • said one of the two portions of the bridge means is mounted to move with said second coater.
  • a method of operating a pair of coaters one of which has a doctor blade thereon, and both of which are located on a single backing roll, for applying a coating to a web of paper being run on the backing roll, comprising the steps of:
  • the method and apparatus of the present invention utilizes apparatus in the form of bridge means which is hinged and adapted to be located between a coater and a remote doctor blade or another coater with such a blade located on the same backing roll.
  • the bridge is positionable between the coater and doctor blade to permit excess coating scraped off by the doctor blade to be collected and transferred or carried over to the coater to be supplied with coating liquid.
  • the use of the hinged bridge permits the relationship of the doctor blade to the backing roll to be varied or adjusted without the need to change or adjust the bridge, the bridge adjusting automatically to the change of the relative positions of the blade and coater.
  • the two coaters are in series with each other, instead of in parallel so that a substantial reduction in the cost, size and complexity of the coating supply system can be made as it need be large enough only to meet the larger coating demand of the two coaters, instead of the sum of the two demands.
  • the coating supply system normally has sufficient excess capacity to provide the amount of coating actually being applied to the web by the two coaters, the coating supply system generally need not be any larger than if it served but a single coater.
  • two coating supply systems or a single system with twice the capacity would have to be provided.
  • each coater may be provided with separate coating supply and collecting piping. While this increases the cost and complexity somewhat, the advantage of using a smaller coating supply system is retained, and flexibility of operation is gained. In such installation, the bridge may be positionable in a second position, wherein it will not transfer coating between the coaters and not interfere with the operation of either coater.
  • a backing roll 10 for a papermaking machine is illustrated. It should be understood that the roll 10 could also represent a roll on an off-machine paper coater line. As is illustrated, the roll 10 is wrapped at least partially by a paper web 12 which is being coated, the web in this instance moving in the direction of the arrowhead 14.
  • One paper coater 16 is located adjacent the lower righthand quadrant of the roll 10, and another coater 18 is located to the left and downwardly, at the bottom of the roll 10.
  • the coaters 16 and 18 could be located elsewhere, and/or may be of different types.
  • the other coater 18 is of a dip roll type, having a coating pan 20, which contains a rotatably mounted coating application roll 22.
  • the pan has a front wall (not shown) and a rear wall 21.
  • the coating pan 20 has baffling in the form of a pair of vertical walls 24 and 26 and an arcuate section 28 which extends from the top of the wall 26 to below the roll 22, and then closes with the bottom 29 of the coating pan.
  • Just to the right of roll 22 is another internal, vertical wall 30 which forms a rear baffle. The outer walls of the pan extend above the tops of the baffles to contain the coating.
  • a coating supply pipe 32 may be provided to supply coating to the coater 18 from the coating supply system (previously described but not shown).
  • the pipe 32 extends through the bottom 29 of the pan 20. Excess coating may be withdrawn from the pan via pipe 34 located between baffles 24 and 26 and pipe 36 located behind the baffle wall 30.
  • the pipe 36 has a valve 35 for regulating the rate coating flows from the pan through that pipe. While the coater 18 could be provided with a doctor blade, in this instance, it is not, but when operated alone or with the one coater 16, utilises a doctor blade 37 ( Figures 1 and 3) carried by the second coater 16, the blade 37 being remote to the coater 18.
  • the coater 16 which is only partially shown, when being utilized, may be supplied with coating from the coating supply system (not shown) by a piping system (not shown) to the upper or head portion 38 of the coater.
  • a piping system not shown
  • the head portion 38 of the one coater 16 is pivotally mounted by means (not shown) to pivot about a point to the right and below the portion as shown in Figure 1, so that it can be moved toward or away from the roll 10 and angularly, for among other reasons to vary the angle of the blade 37 to the roll.
  • the one coater 16 is equipped with an overflow pan 44 which has a front wall 46, a rear wall 48 and a bottom wall 50.
  • the pan 44 is of a sweated construction, i.e. the walls 46, 48 and 50 are double walls, so that a fluid, such as cold water, may be circulated between the double walls of the pan to cause condensation of moisture, and prevent coating from accumulating on the same.
  • the overflow pan 44 is pivotally mounted by separate means (only partially shown) to pivot about a point generally to the right of the pan 44 at just below the level of coater portion 38, so it too can pivot toward or away from the roll 10 and also pivot toward or away from the head portion 38 of the one coater 16, as will be more fully described.
  • the one coater 16 has been provided with a first embodiment of bridge means 60.
  • the bridge means is shown in a first operating position designated by the letter A (full lines in Figure 1 and dotted lines in Figure 2) and in a second stored position, designated by the letter B (dotted lines in Figure 1 and full lines in Figure 2).
  • the bridge means could instead have been provided or mounted on the other coater 18 or other portions of the papermaking machine.
  • the bridge means includes a round bar or pivot rod 62 which is engaged by portions of an elongate member 64 and a bracket 66 to pivotally or hingedly mount the bar 62, and in turn the bridge means 60, to the head 38 of the coater 16.
  • the elongate member 64 is secured to the portion 38 of the coater 16 by conventional means (not shown), has a V-cut for engaging the round bar 62, and functions to transferthe coating flowing over wall 42 onto the pan portion 68 described below.
  • the bracket 66 is retained by bolts 67 and has a semi-circular cutout 69 for engaging the bar 62.
  • V-cut 65 and cutout 69 circumscribe greater than 180°, and in this instance approximately 250°, of the bar 62 to retain it in place, but yet not interfere with the desired movement of the bridge.
  • the construction of bridge 60 is such that it can be moved or pivoted on its bar portion 62 between its A and B positions, as will be hereinafter described, but yet prevents leakage of coating material at the joint provided by bar 62, member 64 and bracket 66.
  • the bar 62 at its lower left quadrant is secured, as by welding, to a flat pan or bottom 68 having at its sides turned up edges 70.
  • the flat pan portion 68 is of double wall construction, having a second wall 72 closed by a pair of end walls 74.
  • One of the end walls 74 has an inlet 76, while the other (not shown) has an outlet (not shown), to accommodate the flow of cold water for condensing moisture and preventing an accumulation or build up of coating on the bridge.
  • the inlet and outlet are connected by hoses to permit movement of the bridge 60.
  • the wall 72 abuts a projection 77 on the head portion 38 to support the bridge 60 in its stored B position.
  • the bridge 60 is long enough to extend from just below the front wall 42 of head portion 38 of the one coater 16, downwardly, beyond and over the upper edge of the rearwall 21 of the pan 20 of the other coater 18.
  • the length and width of the bridge can be varied for the particular installation.
  • the one coater 16 is moved away from the backing roll 10 and the overflow pan 44 of the one coater is also lowered. When moved sufficient distances, it is possible to then pivot the bridge 60 so that it will clear the upper edge of the rear wall 21 of pan 20 and the upper edge of the front wall 46 of the overflow pan 44.
  • the head portion 38 and overflow pan 44 of the coater 16 may be returned to their original positions. While not necessary, if desired, the overflow pan 44 can be raised to the position shown in Figure 1, to support the bridge.
  • the bridge may be stored inside the overflow pan 44, and the overflow pan 44 raised close to the roll, (e.g. 6 mm from the roll).
  • the distance or gap between the top edge of the overflow pan and backing roll can be varied by moving or pivoting the control pan toward or away from the roll 10 to control coating flow.
  • bridge 80 is shown.
  • the portions of bridge 80 which are similar to bridge 60 and portions of the coater 16 and the surrounding environment which are similar, are identified by the same reference numbers as used previously.
  • Bridge 80 is similar to bridge 60, but instead of a pivot pin type hinge connection provided by rod 62, bridge 80 utilizes a flexible hinge 82.
  • One end 84 of the flexible hinge 82 is secured or bonded to an extension 86 on the one coater, the extension 86 corresponding to the member 64.
  • the other end 88 of the flexible hinge 82 is secured or bonded to the flat pan or bottom 90 of the bridge 80.
  • the material for the flexible hinge should be selected to be compatible with the coatings to be used and for long life. For aqueous-day coating, neoprene or butyal rubber is a suitable material. In all other respects, and in its operation, the bridge 80 is similar to the bridge 60.
  • bridge 80 As the operation of bridge 80 is similar to that for bridge 60, only operation of bridge 60 will be described.
  • the bridge 60 When the bridge 60 is in position B, it is stored in the overflow pan 44 of the one coater 16 and does not interfere with the flow of excess coating scraped off the web 12 by the doctor blade 37 into that pan.
  • either the one coater 16 orthe other coater 18 in conjunction with remote blade 37 can be used independently, the provision of the bridge in no manner interfering with the operation of the coaters.
  • coater 16 or 18 the installation shown in Figures 1 to 3 permits either coater 16 or 18 to be used independently. In such instances, coating need be supplied only to the coater being used. If coater 18 is being used alone, it could be supplied with coating through pipe 32 or the supply for coater 16. In the latter instance, the coating would then flow across the bridge to coater 18. Alternatively, coater 18 could be supplied with coating from both sources. If coater 16 is being used alone, coater 18 can be lowered from the backing roll 10. The bridge 60 would be stored in the overflow pan 44, and only coater 16 is supplied with coating. Of course, when both coaters are being used, the coating can be supplied directly to coater 16 or 18 or both as desired.
  • the bridge 60 is pivotably or hingedly connected, it can readily accommodate movement of the head portion 38 to vary the angle the doctor blade 37 makes with the backing roll and web so that this important parameter can be easily varied.
  • adjustments in blade angle can be readily made without stopping the papermaking machine and/or changing bridges.
  • the present invention greatly reduces the size and capacity of the required coating supply system.
  • the overflow pan 44 for the one coater 16 and separate supply piping 32 for the other coater 18 can also be completely eliminated.
  • the invention has been described only on conjunction with two coaters. However, it should be understood that it is just as applicable to a single coater and a remote doctor blade located on the same backing roll above the coater.
  • coating would be supplied to the coater from the coating supply system, applied to the web, the excess scraped off by the remote doctor blade, transferred to the bridge, and by gravity returned to the pan of the coater.
  • the pan could be equipped with some means for withdrawing some of the coating from the pan for reprocessing by the coating supply system and then returned to the pan.
  • the hinged bridge means would have one end fixed, preferably to portions carrying the remote doctor blade. Thus, the remote doctor blade's position relative to the backing roll or web could be adjusted, and the hinged bridge means would automatically compensate for the change.

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  • Paper (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (10)

1. Appareil pour le revêtement ou le couchage d'une bande (12) de papier en mouvement, comprenant un applicateur (18) et une lame de raclage distante (37) mobile angulairement, tous deux placés sur le même rouleau d'appui (10), la lame de raclage (37) étant située au-dessus de l'applicateur (18), un système d'alimentation en substance de revêtement pour fournir la substance de revêtement, et des moyens à pont pour collecter la substance de revêtement en excès et transférer gravitairement la substance de revêtement en excès à l'applicateur (18), caractérisé en ce que les moyens à pont comprennent deux parties (64, 68; 86, 88) reliées l'une à l'autre de façon articulée pour compenser le changement de la position angulaire relative de la lame de raclage (37) sur la bande (12), l'une (64; 86) des dites deux parties des moyens à pont étant montée de manière à se déplacer avec la lame de raclage distance (37), et l'autre (68; 88) des dites deux parties des moyens à pont étant prévue pour s'étendre de la première partie (64; 86) au premier applicateur (18), de sorte qu'on peut modifier la position angulaire de la lame de raclage (37), les moyens à pont compensant automatiquement ce changement de position.
2. Appareil suivant la revendication 1, comprenant un deuxième applicateur (16) qui comporte ladite lame de raclage, le deuxième applicateur (16) étant prévu pour appliquer la substance de revêtement à la bande (12) entre l'applicateur (18) cité en premier et la lame de raclage (37), ledit système d'alimentation en substance de revêtement fournissant directement la substance de revêtement au deuxième applicateur (16), la lame de raclage (37) étant également prévue pour racler et collecter la substance de revêtement en excès appliquée par le deuxième applicateur (16) sur la feuille, les moyens à pont transférant la substance de revêtement en excès du deuxième applicateur (16) au premier applicateur (18).
3. Appareil suivant la revendication 1 ou 2, dans lequel les moyens à pont comprennent une goulotte comportant un fond (68) et un axe de pivot (62) situé à l'extrémité supérieure de ce fond, ladite goulotte (68) étant tenue par l'axe de pivot (62) de manière à pivoter par rapport au deuxième applicateur (16) et/ou à la lame de raclage (37), et ladite goulotte (68) s'étendant de l'axe de pivot (62) au premier applicateur (18).
4. Appareil suivant la revendication 1 ou 2, dans lequel les moyens à pont comprennent une goulotte comportant un fond (90) et une articulation flexible (82), ladite goulotte étant fixée à l'articulation flexible (82), et l'articulation flexible (82) étant elle-même montée de manière à permettre à la goulotte (90) de pivoter par rapport au deuxième applicateur (16) et/ou à la lame de raclage (37), la goulotte s'étendant de l'articulation flexible (82) au premier applicateur (18).
5. Appareil suivant la revendication 2, comprenant en outre une cuve de déversement à l'avant du deuxième applicateur (16), le premier applicateur (18) comportant également une cuve, les moyens à pont étant montés de façon pivotante sur l'un des deux applicateurs et pouvant être placés dans une première position, dans laquelle ils interceptent la substance de revêtement venant du deuxième applicateur (16) avant qu'elle puisse atteindre la cuve de déversement du deuxième applicateur et ils transfèrent la substance de revêtement à la cuve du premier applicateur (18), et les moyens à pont pouvant également être placés dans une deuxième position dans laquelle ils peuvent être stockés à l'intérieur de la cuve de déversement du deuxième applicateur (16) et n'interfèrent pas avec l'écoulement de la substance de revêtement en excès dans la cuve de déversement du deuxième applicateur ou avec le fonctionnement de l'un ou l'autre des deux applicateurs ou de la lame de raclage.
6. Appareil suivant la revendication 5, dans lequel le deuxième applicateur (16) est monté de façon pivotante par rapport au rouleau d'appui (10) et la cuve de déversement est montée de façon pivotante par rapport au deuxième applicateur (16) et au rouleau d'appui (10), et, avec les moyens à pont dans leur deuxième position, la cuve de déversement peut être pivotée vers le rouleau d'appui (10) de manière à établir un intervalle par rapport au rouleau d'appui afin de régler l'écoulement de substance de revêtement venant du deuxième applicateur (16).
7. Appareil suivant la revendication 1 ou 2, dans lequel les moyens à pont comprennent en outre une partie de goulotte (68) à fond à double paroi, de construction chemisée, et des moyens d'entrée (76) et de sortie pour un fluide circulant entre lesdites doubles parois (68, 72) afin d'empêcher l'accumulation de la substance de revêtement sur les moyens à pont.
8. Procédé d'utilisation d'un couple de dispositifs applicateurs (16, 18), dont l'un (16) comporte une lame de raclage (37) et qui sont tous deux placés sur un même rouleau d'appui (10), pour appliquer un revêtement sur une bande (12) de papier en déplacement sur le rouleau d'appui, comprenant les opérations de:
a. envoi d'un excès de substance de revêtement à l'un (16) des applicateurs;
b. application d'au moins une partie de la substance de revêtement à la bande (12), au moyen de cet applicateur (16);
c. collecte de la substance de revêtement en excès qui a été fournie mais n'a pas été appliquée à la bande par l'applicateur (16);
d. collecte de la substance de revêtement en excès qui été fournie et appliquée à la bande par l'applicateur (16), au moyen de la lame de raclage;
e. transfert par gravité de la substance de revêtement collectée de l'applicateur (16) à l'autre applicateur (18), pour alimenter au moins partiellement l'autre applicateur (18) en substance de revêtement; et
f. application d'au moins une partie de la substance de revêtement à la bande, au moyen de l'autre applicateur (18).
9. Procédé suivant la revendication 8, qui comprend en outre les opérations de:
g. collecte de la substance de revêtement en excès qui a été appliquée à la bande par l'autre applicateur (18), au moyen de la lame de raclage (37);
h. transfert par gravité de la substance de revêtement en excès collectée, qui a été appliquée à la bande par l'autre applicateur (18), de manière à revenir audit applicateur (18);
i. retraitement d'au moins une partie de la substance de revêtement envoyée à l'autre applicateur (18); et
j. retour de la substance de revêtement retraitée à l'applicateur (16).
10. Procédé suivant la revendication 8 ou 9, dans lequel le système d'alimentation en substance de revêtement est dimensionné de façon à répondre à la plus grande demande en substance de revêtement des deux applicateurs, mais non à la somme des deux demandes.
EP81304236A 1981-09-16 1981-09-16 Appareil de couchage d'une bande et méthode opératoire d'un couple de dispositifs applicateurs Expired EP0074448B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT81304236T ATE21534T1 (de) 1981-09-16 1981-09-16 Vorrichtung zur beschichtung einer bahn und verfahren zur bedienung zweier beschichtungsgeraeten.
DE8181304236T DE3175164D1 (en) 1981-09-16 1981-09-16 Apparatus for coating a web and method of operating a pair of coaters
EP81304236A EP0074448B1 (fr) 1981-09-16 1981-09-16 Appareil de couchage d'une bande et méthode opératoire d'un couple de dispositifs applicateurs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81304236A EP0074448B1 (fr) 1981-09-16 1981-09-16 Appareil de couchage d'une bande et méthode opératoire d'un couple de dispositifs applicateurs

Publications (2)

Publication Number Publication Date
EP0074448A1 EP0074448A1 (fr) 1983-03-23
EP0074448B1 true EP0074448B1 (fr) 1986-08-20

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ID=8188398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81304236A Expired EP0074448B1 (fr) 1981-09-16 1981-09-16 Appareil de couchage d'une bande et méthode opératoire d'un couple de dispositifs applicateurs

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Country Link
EP (1) EP0074448B1 (fr)
AT (1) ATE21534T1 (fr)
DE (1) DE3175164D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9214884U1 (de) * 1992-10-28 1994-03-03 Zimmer, Johannes, Klagenfurt Rakeleinrichtung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3709295A1 (de) * 1987-03-24 1988-10-13 Jagenberg Ag Vorrichtung zum beschichten einer materialbahn
UY26289A1 (es) * 2000-08-10 2002-07-31 Juan Manuel Giambruno Marono Ventriculo artificial intracavitario

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE570270A (fr) * 1957-08-21
US3486482A (en) * 1966-12-30 1969-12-30 Westvaco Corp Apparatus for coating traveling webs
US4310573A (en) * 1980-07-31 1982-01-12 Consolidated Papers, Inc. Method and apparatus for supplying coating to a coater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9214884U1 (de) * 1992-10-28 1994-03-03 Zimmer, Johannes, Klagenfurt Rakeleinrichtung
DE4337386C2 (de) * 1992-10-28 2002-09-12 Johannes Zimmer Rakeleinrichtung

Also Published As

Publication number Publication date
ATE21534T1 (de) 1986-09-15
DE3175164D1 (en) 1986-09-25
EP0074448A1 (fr) 1983-03-23

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