Patent Application
20210179473
The invention relates to a method and a device for bending panes and use thereof. Various bending methods, many of which have already found their way into the patent literature, are used in the industrial series production of glass panes.
For example, WO 2012/080072 describes a method with incremental bending of glass panes in the edge region and the inner region. Here, the glass pane is first moved on a pre-bending ring into a furnace, wherein the pane edge is pre-bent, followed by further bending of the pane edge by a first suction device, placement and bending of the glass pane in the surface on a final bending ring and finish bending to the desired final geometry by means of a second suction device. By means of the incremental bending of the glass panes, optical defects in complex plane shapes can be reduced.
In WO 2004/087590 and WO 2006072721, in each case, a method is described in which the glass pane is first pre-bent by gravity on a bending frame, followed by press bending using an upper or lower bending mould.
EP 255422 and U.S. Pat. No. 5,906,668 describe in each case the bending of a glass pane by suction against an upper bending mould.
Generally, there is a need for compact systems for bending glass panes, wherein the glass panes should be producible with relatively short cycle times and low production costs.
Consequently, the object of the present invention consists in making available an improved method compared to the previously known methods as well as a corresponding device for bending glass panes. These and other objects are accomplished according to the proposal of the invention by a device and a method for bending glass panes with the features of the coordinate claims. Advantageous embodiments of the invention are apparent from the dependent claims.
In the context of the present invention, the term “pre-bending” refers to an incomplete bending of the pane relative to a defined or definable final bending (final geometry or final shape) of the pane. The pre-bending can, for example, account for 10 to 80% of the final bending. When used as “edge pre-bending”, the term refers to the incomplete bending of the pane in a peripheral edge region of the pane adjacent a pane edge, typically an edge region surrounding the pane in a strip-like manner. For example, the strip width is in the range from 3 to 150 mm. The pane edge is formed by a (cut) surface that is typically arranged perpendicular to the two primary surfaces of the pane opposite one another. When used as “surface pre-bending”, the term refers to the incomplete bending of the pane in a central or inner region of the pane, which is surrounded by the edge region and is directly adjacent the edge region. In contrast, the term “final bending” refers to the complete bending of the pane. When used as “edge final bending”, the term refers to the complete bending in the edge region of the pane: when used as “surface final bending”, to the complete bending in the inner region of the pane.
The term “pane” refers generally to a glass pane, in particular a thermally tempered soda lime glass.
The term “laterally” or “laterally displaceable” refers to a movement with at least one horizontal moving component, as a result of which a structural component can be arranged laterally relative to another structural component.
The device for bending panes typically comprises multiple zones that are structurally and functionally distinguishable from one another. According to the invention, a thermal bending zone for bending heated panes, which is advantageously equipped with a heating device for heating the panes, is an essential element. In particular, the bending zone can, for this purpose, be brought to a temperature that enables plastic deformation of panes and is typically in the range from 600° C. to 750° C.
The bending zone comprises at least two bending moulds, in particular a first bending mould and a second bending mould. The first bending mould and the second bending mould have in each case a contact surface for contacting a pane. The contact surface of the first bending mould or the second bending mould has an outer surface section and an inner surface section or is composed of the outer and inner surface section. The outer surface section is suitably designed for edge final bending in an edge region of the pane. Preferably, the inner surface section of the first bending mould or the second bending mould is suitably designed for surface pre-bending in a central or inner region of the pane surrounded by the edge region. Alternatively, the inner surface section of the second bending mould can be suitably designed for surface final bending.
As used here and in the following, the phrase “suitably designed” in connection with the outer surface section of the contact surface means that the outer surface section is designed such that an edge final bending of the pane can be produced. However, the pane does not mandatorily have to be subjected to edge final bending, instead, it is possible for only edge pre-bending to be done. The edge final bending is, in that case, not produced until later in the process. The outer surface section does not, for this purpose, necessarily have to have a shape that is complementary to a pane that is finally bent at the edge. In connection with the inner surface section of the contact surface “suitably designed” means that the inner surface section is designed such that surface pre-bending of the pane can be produced, whereby surface pre-bending does not mandatorily have to be done. If the inner surface section of the second bending mould is, alternatively, suitably designed for surface final bending, this means that a surface final bending can be produced, but does not necessarily have to be produced. The surface final bending can then be produced later in the process.
Preferably, the first bending mould and the second bending mould have in each case a means for securing a pane against the respective contact surface.
The means for securing a pane against the contact surface advantageously comprises a pneumatic suction device for sucking a gaseous fluid, in particular air, by means of which the pane can be pulled by negative pressure against the respective contact surface. The contact surface can be provided, for this purpose, for example, with at least one suction hole, advantageously with a plurality of suction holes uniformly distributed, for example, over the contact surface, to which a negative pressure can be applied to the contact surface in each case for a suction effect. The suction device can, alternatively or additionally, have an apron surrounding the contact surface, by means of which a negative pressure can be produced on the contact surface. The suction device generates a typically upward directed flow of a gaseous fluid, in particular air, which suffices to firmly hold the pane against the contact surface. This enables, in particular, placing a frame for receiving the pane secured against the contact surface below the pane.
Alternatively or additionally, the means for securing a pane against the contact surface advantageously comprises a pneumatic blowing device for producing a gaseous flow of fluid, in particular a flow of air, which is designed such that a pane is blown on from below by the gaseous flow of fluid, raised thereby, and can be pressed against the contact surface of the first or second bending mould. The blowing device can, in particular, be designed such that the pane secured against the contact surface can be pre-bent in the edge region and/or in the inner region by the pressure exerted by the gaseous flow of air, advantageously at least in the edge region.
As used here and in the following, the term “securing” refers to a fixing of a pane against the contact surface, wherein the pane can be pressed against the contact surface and/or sucked against the contact surface. The securing of a pane against the contact surface is not mandatorily associated with a bending operation. The contact surfaces of the first and second bending mould are in each case oriented downward for contact with a pane.
The device for bending panes further comprises a press frame (e.g., a press ring) for transporting and pressing a pane. For this purpose, the press frame has a press surface (contact surface) for a pane, which is also designed complementary to an outer surface section of the first bending mould or the second bending mould suitable for edge final bending. The press surface is, for example, designed in the form of a strip, for example, with a strip width in the range from 3 to 150 mm. The press surface is oriented upward for contact with a pane. In addition, the press frame is suitably designed for pre-bending the surface by means of gravity in the inner region of the pane, wherein a sagging of the inner region of the pane downward by means of gravity is possible. The press frame can, for this purpose, be open, in other words, be provided with a central opening, or be full-surface, so long as sagging of the inner region of the pane is enabled. In terms of simpler processing of panes, an open design is preferred. It is understood that a greater width of a strip-shaped press surface is advantageous in terms of avoiding unwanted marks (changes in the flat surfaces of the pane), wherein by pressing the pane on the press frame in the edge region, the creation of marks can be counteracted. The press surface of the press frame has the defined geometry, wherein the press frame is sufficiently rigid for this purpose. The press frame is, for example, formed as a cast part, with the press surface formed, for example, by milling. In gravity bending, the pane is pre-bent by its own weight. As a result of the prior pressing of the pane edge against the press surface of the press frame, the surface pre-bending of the pane can be reduced. In addition, it is advantageously possible to use a stop for fixing the pane during transport on the press frame.
The first bending mould and the press frame are vertically displaceable relative to one another such that the pane can be pressed in the edge region between the outer surface section of the first bending mould and press surface of the press frame. The pane is thus pre-bent or finally bent in the edge region. The first bending mould is advantageously coupled with a movement mechanism by means of which the first bending mould can be delivered to the press frame. It is, however, also conceivable for the press frame to be delivered to the first bending mould.
Similarly, the second bending mould and the press frame are vertically displaceable relative to one another such that the pane can be pressed in the edge region between the outer surface section of the second bending mould and the press surface of the press frame. The pane is thus pre-bent or finally bent in the edge region. The second bending mould is advantageously coupled with a movement mechanism by means of which the second bending mould can be delivered to the press frame. Alternatively, it is possible for the press frame to be delivered to the second bending mould.
Advantageously, the press frame is laterally movable (in other words, with at least one horizontal moving component) reciprocally between a first press frame position associated with the first bending mould and a second press frame position associated with the second bending mould relative to the first and the second bending mould. Advantageously, the press frame is reciprocally and translationally (1-dimensionally) movable in the horizontal plane. Typically, the first press frame position is situated vertically (e.g., directly) below the first bending mould, and the second press frame position is situated vertically (e.g., directly) below the second bending mould.
Advantageously, the device according to the invention further has a preheating zone with a heating device for heating the panes to a bending temperature as well as a transport mechanism, in particular of the roller bed type, for transporting panes from the preheating zone to the bending zone, in particular to a removal position (e.g., directly) below the first bending mould. The roller bed is advantageously implemented such that individual panes can be transported one after another into the removal position. The removal position can, in particular, correspond to an end section of the roller bed.
Advantageously, the device according to the invention further has a thermal tempering zone with a cooling device for the thermal tempering of a pane, wherein a tempering frame (e.g., a tempering ring) is laterally movable reciprocally (in other words, with at least one horizontal moving component) for transporting a pane from a first tempering frame position associated with the second bending mould, which can, in particular, be identical to the second press frame position, to a second tempering frame position in the tempering zone relative to the second bending mould. Advantageously, the tempering frame is reciprocally and translationally (one-dimensionally) movable in the horizontal plane. By means of thermal prestressing (tempering) a temperature difference between a surface zone and a core zone of the pane is systematically produced in order to increase the breaking strength of the pane. The tempering of the pane is advantageously produced by means of a device for blowing on the pane with a gaseous fluid, preferably air. Preferably, the two surfaces of a pane are simultaneously subjected to a cooling flow of air.
With lateral displacement of the press frame and the tempering frame, a single-pane is transported in each case, enabling processing of two panes simultaneously on the two bending moulds, while a third pane is situated in the tempering zone. As a result of the preferably reciprocal translational movement of the press frame and/or the tempering frame, the individual panes can be transported efficiently and quickly between the various tools. Due to the bending of a pane in the edge region and the inner region carried out in multiple stages, the bending time on the second bending mould can be significantly reduced in order to shorten the cycle times. In addition, as a result, panes with complex geometry can also be made with high quality.
Advantageously, the tempering frame has, for transporting a pane from the bending zone to the tempering zone, a frame surface suitably designed for the edge final bending in the edge region of the pane (5). Moreover, it is advantageous for the tempering frame to be suitably designed for surface final bending by means of gravity in the inner region of the pane. If a pane that is placed on the tempering frame is first subjected to edge pre-bending and surface pre-bending, final edge bending and final surface bending can be achieved during transport on the tempering frame by means of gravity.
The device according to the invention for bending panes serves in particular for carrying out the method according to the invention described in the following. In this regard, reference is made to the statements above.
The method according to the invention includes a step in which a pane heated to bending temperature is provided.
The method includes another step in which the pane is secured against a contact surface of a first bending mould. Advantageously, a securing of the pane against the contact surface of the first bending mould is done in that the pane is raised by blowing on it with a gaseous fluid and pressing it against the contact surface of the first bending mould. Alternatively, and preferably additionally, the pane is secured against the contact surface of the first bending mould by suction. Depending on the pressure with which the pane is pressed against the contact surface of the first bending mould, the pane can be subjected to edge pre-bending in the edge region and/or surface pre-bending in the inner region.
The method includes another step in which the pane is pressed between the first bending mould and a press frame. The contact surface has an outer surface section suitably designed for edge final bending in an edge region of the pane. In addition, the press frame has a press surface that is complementary to the outer surface section of the first bending mould. Here, edge pre-bending or edge final bending in the edge region of the pane is done.
The method includes another step in which the pane is transported on the press frame to a second bending mould, wherein, during transport, pre-bending of the surface in the inner region of the pane surrounded by the edge region of the pane is done by gravity.
The method includes another step in which the pane is pressed between the second bending mould and the press frame, wherein the second bending mould has a contact surface with an outer surface section suitably designed for the edge final bending in the edge region of the pane, wherein the press surface of the press frame is complementary to the outer surface section of the second bending mould. Here, edge pre-bending or edge final bending in the edge region of the pane is done.
The method includes another step in which the pane is secured against a contact surface of the second bending mould. Advantageously, securing the pane against the contact surface of the second bending mould is done in that the pane is raised by blowing on with a gaseous fluid and is pressed against the contact surface of the second bending mould. Alternatively, and preferably additionally, the pane is secured against the contact surface of the second bending mould by suction. Depending on the pressure with which the pane is pressed against the contact surface of the second bending mould, the pane can be subjected to edge pre-bending in the edge region and/or surface pre-bending and/or surface final bending in the inner region. For example, the pane is secured by suction against the second bending mould, wherein the suction is so strong that the pane is subjected to surface final bending in the inner region and, possibly, to edge final bending in the edge region.
The method includes another step in which the pane is transported on a (cool) tempering frame to a cooling device for thermal tempering of the pane.
In an advantageous embodiment of the method according to the invention, edge pre-bending is done in the edge region of the pane by pressing the pane between the first bending mould and the press frame. Then, further edge pre-bending is done in the edge region of the pane by pressing the pane between the second bending mould and the press frame. Finally, edge final bending of the pane is done during transport of the pane on the tempering frame.
In another advantageous embodiment of the method according to the invention, edge pre-bending is done in the edge region of the pane by pressing the pane between the first bending mould and the press frame. Then, edge final bending is done in the edge region of the pane by pressing the pane between the second bending mould and the press frame.
In another advantageous embodiment of the method according to the invention, edge final bending is done in the edge region of the pane by pressing the pane between the first bending mould and the press frame.
In an advantageous embodiment of the method according to the invention, surface final bending in the inner region of the pane is done by gravity during transport on the tempering frame.
In another advantageous embodiment of the method according to the invention, the press frame is moved laterally relative to the first and the second bending mould between a first press frame position, which is associated with the first bending mould and is preferably situated (e.g., directly) below the first bending mould, and a second press frame position, which is associated with the second bending mould and is preferably situated (e.g., directly) below the second bending mould, in order to transport a pane from the first bending mould to the second bending mould. Preferably, the press frame is moved reciprocally (bidirectionally) translationally (one-dimensionally) in a horizontal plane between the first press frame position and the second press frame position.
Preferably, the pane is transported by a transport mechanism, in particular of the roller bed type, all the way to a removal position, which is associated with the first bending mould and is preferably situated (e.g., directly) below the first bending mould and, for example, (e.g., directly) below the first press frame position. The pane can then be secured against the contact surface of the first bending mould. Advantageously, while the pane is secured against the contact surface of the first bending mould, the press frame is transported to the first press frame position.
In an advantageous embodiment of the method according to the invention, while the pane is secured against the second bending mould, the tempering frame is transported to a first tempering frame position (typically below the second bending mould) associated with the second bending mould, the pane is placed on the tempering frame, and the tempering frame carrying the pane is moved laterally relative to the first and second bending mould to a second tempering frame position for the thermal tempering of the pane. Preferably, the tempering frame is moved reciprocally (bidirectionally) translationally (one dimensionally) in a horizontal plane between the first tempering frame position and the second tempering frame position.
The bending on the second bending mould can give the pane a final or quasi-final shape. Typically, but not mandatorily, the shape of the pane will still change (usually slightly) on the tempering frame, for which purpose the tempering frame preferably has a frame surface that is suitably designed for edge final bending. In addition, the tempering frame is suitably designed for surface final bending by gravitation. The pane thus receives its final shape on the tempering frame.
The invention further extends to the use of the device according to the invention as well as the method according to the invention for producing panes for means of transportation on land, in the air, or on water, in particular in motor vehicles, and in particular for rear windows in motor vehicles.
The various embodiments of the invention can be realised individually or in any combinations. In particular, the features mentioned above and to be explained in the following can be used not only in the combinations indicated, but also in other combinations or in isolation, without departing from the scope of the present invention.
The invention is explained in detail using exemplary embodiments and referring to the accompanying figures. They depict, in simplified, not-to-scale representation:
Consider first
In the device 1, the panes 5 can be transported successively from the preheating zone 3 into the bending zone 2 and, finally, into the tempering zone 4. Provided for transport of the panes 5 from the preheating zone 3 into the bending zone 2 is a pane transport mechanism 6, comprising, in the embodiment of
The bending zone 2 has two separate bending stations 9, 9′, with a first bending station 9 and a second bending station 9′ arranged physically offset from one another in the horizontal x-direction. In the description of the two bending stations 9, 9′, the reference characters with “′” refer in each case to a component of the second bending station 9′, with components of the second bending station also possibly not having “′”, when this seems appropriate. For easier reference, all components of the second bending station 9′ are also referred to as “second” components, in contrast to the components of the first bending station 9, which are also referred to as “first” components.
The bending stations 9, 9′ have in each case a vertical holder 10, 10′ for releasable attachment of a bending tool 11, 11′. The holders 10, 10′ are in each case vertically displaceable by a holder moving mechanism 13, 13′ (not depicted in detail). Optionally, the holders 10, 10′ are laterally displaceable by the moving mechanism 13, 13′ in each case also with at least one horizontal movement component, in particular in the positive or negative x-direction. The bending tool 11, 11′ is in each case detachably mounted at the lower end of the holders 10, 10′. Each bending tool 11, 11′ has a downward-directed, convex contact surface 14, 14′ for the flat contact of a pane 5. With appropriate contact pressure, the pane 5 can be bent on the respective contact surface 14, 14′. The two contact surfaces 14, 14′ have, for this purpose, in each case an end or edge outer surface section 15, 15′ and an inner surface section 16, 16′ with mutually different surface contours (surface shapes), wherein the inner surface section 16, 16′ is completely surrounded (bordered) by the outer surface section 15, 15′.
In addition to the mutually different surface contours of an outer surface section 15, 15′ and an inner surface section 16, 16′ of one and the same bending tools 11, 11′, the contact surfaces 14, 14′ of the two bending tools 11, 11′ also have different surface contours. Specifically, the outer surface section 15 of the contact surface 14 of the first bending tool 11 has a surface contour that corresponds to a desired edge final bending, i.e., final bending, in a (for example, strip-shaped) edge region 17 of the pane 5, in other words, enables such final bending. The end edge region 17 of the pane 5 is adjacent a pane (cut) edge 19 arranged perpendicular to the two opposing pane primary surfaces.
The inner surface section 16 of the contact surface 14 of the first bending tool 11 has a surface contour that corresponds to a surface pre-bending, i.e., non-final bending, in an inner region 18 of the pane 5 completely surrounded by the edge region 17. The outer surface section 15′ of the contact surface 14′ of the second bending tool 11′ has a same surface contour as the outer surface section 15 of the contact surface 14 of the first bending tool 11 and has a surface contour that corresponds to the desired edge final bending in the edge region 17 of the pane 5. In contrast to the inner surface section 16 of the contact surface 14 of the first bending tool 11, the inner surface section 16′ of the contact surface 14′ of the second bending tool 11′ has a surface contour that corresponds to a surface final bending, i.e., a final or quasi-final bending, in the inner region 18 of the pane 5. The first holder 10 forms, together with the first bending tool 11, a first bending mould 12. In a corresponding manner, the second holder 10′ forms, together with the second bending tool 11′, a second bending mould 12′.
The two bending stations 9, 9′ are in each case provided with a suction device 20, 20′ for sucking a pane 5 against the contact surface 14, 14′. For this purpose, the contact surfaces 14, 14′ can, for example, be provided with evenly distributed suction holes (not shown) and/or an apron positioned at the edge. By means of a negative pressure or a vacuum that is produced, a pane 5 can be pulled against the contact surface 14, 14′.
The first bending station 9 further has a blowing device 21 (not shown in detail) by means of which a flowing gaseous fluid, for example, an air flow 33 can be produced in a vertical direction through the roller bed 7 at the removal position 22. As a result, a pane 5 can be raised from the removal position 22 in the direction of the bending mould 12. The removal position 22 is situated in a vertical direction directly below the bending tool 11 of the first bending mould 12.
The bending station 9 further has a press frame 25 (e.g., a press ring) for pressing and transporting a pane 5. The press frame 25 is fixedly mounted on an elongated carrier 27 and can be laterally displaced by moving the carrier 27 in a positive and negative x-direction relative to the first and second bending mould 12, 12′. The carrier 27 can be moved by a carrier movement mechanism 26 (not shown in detail) along its extension direction. Thus, the press frame 25 can be moved back and forth translationally in particular between a first press frame position 23 of the first bending station 9 and a second press frame position 24 of the second bending station 9′. The first press frame position 23 and the second press frame position 24 are situated here, for example, in the same horizontal plane. The removal position 22 is situated directly below the first press frame position 23.
The press frame 25 has an edge-positioned (for example, strip-shaped) press surface 28 (see
The tempering zone 4 laterally coupled to the bending zone 2 has two so-called “tempering boxes” 29, which are arranged offset from one another in the vertical direction. By means of the two tempering boxes 29, a flow of air can be generated in each case for air cooling a pane 5 situated between the two tempering boxes 29 in order to temper the bent pane 5. Situated in the tempering zone 4 is a tempering frame 30 for transport and support during tempering of a bent pane 5. The tempering frame 30 can be displaced laterally by a tempering frame movement mechanism 31 (not shown in detail here) along at least one horizontal movement component relative to the bending station 2. Specifically, the tempering frame 30 can be moved back and forth translationally in a horizontal plane between a second tempering frame position 32, which is situated between the two tempering boxes 29 of the tempering station 4, and a first tempering frame position 24, which is identical to the second press frame position. For this purpose, the bending zone 2 implemented as a bending chamber has a door 35. In this manner, the tempering frame 30 can be driven into the second bending zone 24, to pick up a fully bent pane 5 and to transport it into the tempering zone 4. From there, the pane 5 can be removed in a simple manner and further processed.
Reference is now made to
The second bending mould 12′ has been brought from the raised position into a lowered position in which there is surface contact between the contact surface 14′ and the pane 5 positioned on the press frame 25. Here, the pane 5 is pressed in the edge region 17 between the outer surface section 15′ of the contact surface 14′ of the bending tool 11′ and the press surface 28 of the press frame 25 (see
Although this is not shown in
In an exemplary embodiment of the method according to the invention, edge pre-bending in the edge region of the pane 5 is done by means of pressing the pane 5 between the first bending mould 12 and the press frame 25, and edge pre-bending in the edge region 17 of the pane 5 is done by means of pressing the pane 5 between the second bending mould 12′ and the press frame 25, wherein an edge final bending of the edges is done during transport on the tempering frame 30. During transport on the press frame 25, surface pre-bending is done in the inner region of the pane 5 by gravity. During transport on the tempering frame 30, surface final bending is done in the inner region of the pane 5 by gravity. The pane thus receives its final shape only on the tempering frame.
In another exemplary embodiment of the method according to the invention, edge pre-bending in the edge region 17 of the pane 5 is done by pressing the pane 5 between the first bending mould 12 and the press frame 25, and an edge final bending in the edge region 17 of the pane 5 is done by means of pressing the pane 5 between the second bending mould 12′ and the press frame 25. During transport on the tempering frame 30, a further edge final bending is done only in the sense that the already present edge final bending is not lost, i.e., the edge final bending is maintained. During transport on the press frame 25, surface pre-bending in the inner region of the pane 5 is done by gravity. During transport on the tempering frame 30, surface final bending in the inner region of the pane 5 is done by gravity. The pane 5 thus receives its final shape in the edge region 17 already by means of the second bending mould 12′. The pane 5 receives its final shape in the inner region only on the tempering frame 30.
In another exemplary embodiment of the method according to the invention, an edge final bending in the edge region 17 of the pane 5 is done by pressing the pane 5 between the first bending mould 12 and the press frame 25. During transport on the press frame 25 and tempering frame 30, a further edge final bending is done only in the sense that the already present edge final bending is not lost, i.e., the edge final bending is maintained. During transport on the press frame 25, surface pre-bending in the inner region of the pane 5 is done by gravity. During transport on the tempering frame 30, a surface final bending in the inner region of the pane 5 is done by gravity. The pane 5 thus receives its final shape in the edge region 17 already by means of the first bending mould 12. The pane 5 receives its final shape in the inner region only on the tempering frame 30.
In all embodiments of the method, edge pre-bending and/or surface pre-bending can be done by securing the pane 5 against the first bending mould 12 or the second bending mould 12′. In addition, a surface final bending can be done by securing the pane 5 against the second bending mould 12′.
From the above, it is clear that the invention provides a method as well as a compact device for producing panes by means of which a simple and economical production of panes with short cycle times is enabled. In particular, the throughput with complex glass designs can be increased. Particularly advantageously, the transport time on the press frame between the two bending moulds can be used for gravity bending in the inner region of the surface. By pressing a pane between a first bending mould and a press frame in the edge region of the pane, wherein the pane is pre-bent or final bent in the edge region, a precise definition of position of the pane can be achieved such that the pane can be produced with high quality requirements.
| Number | Date | Country | Kind |
|---|---|---|---|
| 17183930.1 | Jul 2017 | EP | regional |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2018/066747 | 6/22/2018 | WO | 00 |
