CN213963948U - Side leakage prevention sanitary towel production equipment - Google Patents
Side leakage prevention sanitary towel production equipment Download PDFInfo
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- CN213963948U CN213963948U CN202022058233.0U CN202022058233U CN213963948U CN 213963948 U CN213963948 U CN 213963948U CN 202022058233 U CN202022058233 U CN 202022058233U CN 213963948 U CN213963948 U CN 213963948U
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Abstract
The utility model provides a prevent edge leakage sanitary towel production facility, includes core processingequipment, leak protection surface course processingequipment and water conservancy diversion layer set composite, and wherein leak protection surface course processingequipment includes: the first unwinding roller, the second unwinding roller, the first roller cutting assembly, the second roller cutting assembly and the composite roller. The compound roller is used for symmetrically compounding the two cut leakage-proof separation edges to two sides of the middle surface layer after cutting. The first rolling cutting assembly and the second rolling cutting assembly are both cylindrical, and at least two cutters are fixed on the circumferential side face respectively. The cutter is circular along the axis direction of the cylinder. Along the direction perpendicular to the axis of the cylinder, the two cutters are respectively provided with an arc-shaped cutter in the direction away from each other, and the two cutters in the rest part are straight lines parallel to each other. And a glue scraping mechanism is arranged on an unreeling path between the first roller cutting assembly and the composite roller. The leak protection surface course that this application was made for the core can obtain bigger imbibition area, increases the absorption rate, and simultaneously, the leak protection separates the limit and can effectively block liquid diffusion to the sanitary towel edge.
Description
Technical Field
The application relates to the technical field of production equipment of female sanitary products, in particular to production equipment of a side leakage prevention sanitary towel.
Background
The main processing procedures of the existing common fan-tail sanitary towel production equipment are as shown in fig. 10, and include: crushing wood pulp by a crusher, adding high polymers for mixing, forming the wood pulp into a strip shape on a forming drum, coating the strip-shaped fluff pulp with toilet paper, compacting and internally cutting the fluff pulp into a core body; the water repellent cloth on two sides is split and then compounded with two sides of the surface layer respectively, compounded with the core body after being covered with the flow guide layer, then extruded into the shape of the flow guide groove through the flow guide groove, subjected to peripheral sealing, compounded with release paper and then subjected to external cutting forming, after being folded, the wings are pasted with the release paper, subjected to 90-degree rotation and compounded with the small bag film, quickly and easily pasted after being folded in three ways, and then cut into a finished product after being sealed by the small bag.
The water repellent cloth is directly cut into a straight strip shape by the equipment, the straight strip-shaped water repellent cloth is compounded on the surface layer, and the surface layer is compounded with the core body after being coated with the flow guide layer. The front part of the core body is in a straight strip shape, the rear part of the core body is in a fan tail shape, the straight strip-shaped water-repellent cloth is compounded on the surface layer, so that the arc-shaped parts on two sides of the fan tail of the core body can not absorb liquid, the liquid absorption area of the fan tail is reduced, the utilization rate of the fan tail is not high, and the phenomenon of side leakage is easy to occur when the fan tail is used.
SUMMERY OF THE UTILITY MODEL
The application provides a prevent edge leakage sanitary towel production facility, its aim at improves the imbibition area of fan tail core.
The utility model provides an embodiment provides a prevent edge leakage sanitary towel production facility, including core processingequipment, leak protection surface course processingequipment and water conservancy diversion layer set composite, leak protection surface course processingequipment includes:
the first unwinding roller is used for unwinding the water-repellent non-woven fabric; the second unwinding roller is used for unwinding the middle surface layer; the unwinding paths of the first unwinding roller and the second unwinding roller are intersected;
the second roll cutting assembly is positioned on the unwinding path of the second unwinding roll and is used for cutting the middle surface layer, so that the front part of the middle surface layer is in a straight strip shape, and the rear part of the middle surface layer is in a fan tail shape; the first roll cutting assembly is positioned on the unwinding path of the first unwinding roll and is used for cutting the water-repellent non-woven fabric into two symmetrical leakage-proof partition edges, the front parts of the leakage-proof partition edges are straight strips, and the rear parts of the leakage-proof partition edges are provided with radian edges corresponding to the fan tail shapes of the middle surface layer;
the composite rollers are positioned at the intersection of the unwinding paths of the first unwinding roller and the second unwinding roller and are used for symmetrically compounding the two cut leakage-proof separation edges to two sides of the middle surface layer;
the first roll cutting assembly and the second roll cutting assembly are cylindrical, and at least two cutters are respectively fixed on the circumferential side surface; the cutter is annular along the axis direction of the cylinder; the two cutters are respectively provided with an arc-shaped cutter in the direction away from each other along the direction vertical to the axis of the cylinder, and the rest two cutters are straight lines parallel to each other;
the first roll cutting assembly and the unreeling path between the composite rolls are provided with a glue scraping mechanism, and the glue scraping mechanism is used for adding structural glue to the leakage-proof partition edges.
In one embodiment, a first air suction and waste discharge device is arranged between the first roller cutting assembly and the glue scraping mechanism.
In one embodiment, a second air suction and waste discharge device is arranged between the second rolling cutting assembly and the composite roll.
In one embodiment, the frictioning mechanism includes that first frictioning rifle and second are scraped and are glued the rifle, first frictioning rifle is used for gluing the structure and adds to the anterior vertical bar edge in leak protection flange, the second frictioning rifle is used for gluing the structure and adds to the radian edge at leak protection flange rear portion, vertical bar edge with the structure of radian edge is glued and is located same one side.
In one embodiment, the number of the second glue scraping guns is even and the second glue scraping guns are symmetrically distributed.
In one embodiment, the second glue guns on the same side are distributed in a staggered manner.
In one embodiment, the width of the structural adhesive added on the leakage-proof separation edge is 3-10 mm.
In one embodiment, the glue scraping mechanism is located between the water-repellent non-woven fabric and the intermediate surface layer.
In one embodiment, the intermediate surface layer is made of a hydrophilic material or a semi-water-repellent material.
In one embodiment, the water-repellent non-woven fabric and the intermediate axis projection of the intermediate surface layer are aligned.
According to the production equipment of the side leakage prevention sanitary towel in the embodiment, the first roller cutting assembly is arranged, so that the front part of the leakage prevention partition edge is in a straight strip shape, and the rear part of the leakage prevention partition edge is provided with the arc edge corresponding to the fan tail shape of the middle surface layer. Better and the anterior middle surface course that is the fan tail form for the straight bar rear portion of leak protection separate limit after cutting compound mutually, improve the imbibition area of sanitary towel core layer, when high-efficient absorption, can also avoid local imbibition pressure big, the slow problem of imbibition. Assembly and the second roller of cutting are cut to columniform first roller, rotate the in-process, and the cutter is to refusing water non-woven fabrics and middle surface course cutting, and the radian is cut out to arc sword portion for middle surface course's rear portion is fan tail form, and the rear portion of refusing water non-woven fabrics has and middle surface course rear portion fan tail form assorted radian edge, and the front portion of all the other cutters will refuse water non-woven fabrics and middle surface course is cut into the vertical bar.
Drawings
FIG. 1 is a schematic view of a partial structure of an apparatus for producing a side-leakage-proof sanitary napkin according to an embodiment of the present application;
FIG. 2 is a schematic view of an exemplary embodiment of a glue gun;
FIG. 3 is a schematic view of a first roll cutting assembly according to an embodiment of the present disclosure;
FIG. 4 is another schematic view of the first roller cutting assembly in one embodiment of the present application;
FIG. 5 is a schematic view of a second roll-cutting assembly according to an embodiment of the present disclosure;
fig. 6 is a schematic view of a water-repellent non-woven fabric slitting structure in an embodiment of the present application;
FIG. 7 is a schematic view of a middle layer slitting structure in an embodiment of the present application;
FIG. 8 is a schematic view of a structure of a water-repellent nonwoven fabric and an intermediate layer according to an embodiment of the present application;
FIG. 9 is a schematic view of a frictioning structure of a water-repellent non-woven fabric after slitting according to an embodiment of the present application;
fig. 10 is a process flow chart of the prior art production equipment for the side leakage prevention sanitary towel.
In the drawing, 1, a first unwinding roller, 2, a second unwinding roller, 3, water-repellent non-woven fabric, 4, a middle surface layer, 5, a first roller cutting assembly, 6, a second roller cutting assembly, 7, a first glue scraping gun, 8, a second glue scraping gun, 81, an outer glue scraping gun, 82, an inner glue scraping gun, 9, a composite roller, 10, a first air suction and waste discharge device, 11, a second air suction and waste discharge device, 12, a cutter, 13 and an arc-shaped knife are arranged.
Detailed Description
The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
As shown in fig. 10, a process flow chart of the prior art production equipment for the side leakage prevention sanitary napkin. The difference between the production equipment of the application and the existing production equipment lies in the leakage-proof surface layer processing device corresponding to the dotted line frame selection in fig. 10, and other structures, such as a core body processing device, a flow guide layer compounding device, a slitting device, packaging equipment and the like, belong to the prior art and are not described again.
As shown in fig. 1 to 9, the apparatus for processing a leakage-proof surface layer of the present application comprises: the first unwinding roller 1 is used for unwinding the water-repellent non-woven fabric 3; the second unwinding roller 2 is used for unwinding the middle surface layer 4; the unwinding paths of the first unwinding roller 1 and the second unwinding roller 2 are intersected.
The second roll cutting assembly 6 is located on an unwinding path of the second unwinding roll 2 and used for cutting the middle surface layer 4, so that the front part of the middle surface layer 4 is in a straight strip shape, and the rear part of the middle surface layer 4 is in a fan-tail shape (two sides of the front part are convex radian profiles). The first roll cutting assembly 5 is located on an unreeling path of the first unreeling roll 1 and used for cutting the water-repellent non-woven fabric 3 into two symmetrical anti-leakage partition edges, the front portions of the anti-leakage partition edges are straight strip-shaped, and the rear portions of the anti-leakage partition edges are provided with arc edges corresponding to the fan-tail shapes of the middle surface layer 4. And the compound roller 9 is positioned at the intersection of the unreeling paths of the first unreeling roller 1 and the second unreeling roller 2 and is used for symmetrically compounding the two cut anti-leakage separation edges to the two sides of the middle surface layer 4 after cutting.
The first roll cutting assembly 5 and the second roll cutting assembly 6 are both cylindrical, and at least two cutters 12 are respectively fixed on the circumferential side surfaces. The cutter 12 is annular along the axis direction of the cylinder; along the direction vertical to the axis of the cylinder, the two cutters 12 are respectively provided with an arc-shaped cutter 13 in the direction away from each other, and the other two cutters 12 are straight lines parallel to each other. Set up on the route of unreeling between first roller cutting assembly 5 and the compound roller 9 and scrape gluey mechanism, scrape gluey mechanism and be used for adding the structure to leak protection on the separate edge.
In the production equipment of the side leakage prevention sanitary towel in the embodiment of the application, the first roller cutting assembly 5 is arranged, so that the front part of the leakage prevention partition edge is in a straight strip shape, and the rear part of the leakage prevention partition edge is provided with the arc edge corresponding to the fan tail shape of the middle surface layer 4. Better and the front portion of the leak protection after cutting of separating the limit is 4 looks compounds for the middle surface course of fan tail form for straight bar rear portion, improves the imbibition area of sanitary towel core layer, and when high-efficient the absorption, can also avoid local imbibition pressure big, the slow problem of imbibition. The assembly 6 is cut to columniform first roller, and the rotation in-process, cutter 12 are to refusing water non-woven fabrics 3 and middle surface course 4 and cut, and arc sword 13 part surely goes out the radian for middle surface course 4's rear portion is fan tail form, and the rear portion of refusing water non-woven fabrics 3 has and middle surface course 4 rear portion fan tail form assorted radian edge, and all the other cutters 12 will refuse the front portion of water non-woven fabrics 3 and middle surface course 4 and cut into the vertical bar shape.
Adopt the leak protection sanitary towel production facility of preventing edge leakage in the above-mentioned embodiment of this application, the leak protection surface course of making for the core can obtain bigger imbibition area, increases the absorption rate, no matter the user is sitting, is lying or stands up at will, and liquid flows to the back along the thigh ditch, also can be absorbed by the fan tail rapidly, and simultaneously, the leak protection separates the limit and can effectively block liquid diffusion to the sanitary towel edge, has avoided liquid to spill over the possibility of polluting the clothing from the fin.
As shown in fig. 3, two cutters 12 are disposed on the circumferential side surface of the first roll cutting assembly 5, the first roll cutting assembly 5 is cylindrical, and one cutter 12 is disposed at each of different positions of the cylindrical axis. In the rotating process of the first roller cutting assembly 5, the cutter 12 on the first roller cutting assembly cuts the water-repellent non-woven fabric 3. The first roll cutting assembly 5 is provided with different circumferential radiuses, the circumferential side surfaces at the same axial position can be provided with different numbers of cutters 12, the number of the cutters 12 at different axial positions is the same, namely, the circumferential side surfaces of the first roll cutting assembly 5 are provided with even numbers of cutters 12. For example, when the radius of the first rolling cutting assembly 5 is large, the circumference of the circumference is large, two cutters 12 can be arranged on the circumferential side surface at the same axial position, and the number of the specific cutters 12 can be flexibly selected according to actual conditions. As shown in fig. 5, two cutters 12 are disposed on the circumferential side surface of the second rolling assembly 6, and similarly, an even number of cutters 12, such as 4, 6, may be disposed according to the different cylindrical radii of the second rolling assembly 6.
In one embodiment, a first air suction and exhaust device 10 is arranged between the first roll cutting assembly 5 and the glue scraping mechanism. As shown in fig. 6, the water-repellent non-woven fabric 3 cut by the first roll cutting assembly 5 is divided into three pieces of fabric, two sides of the three pieces of fabric are provided with symmetrical leakage-proof partition edges which are periodically arranged, the middle water-repellent non-woven fabric 3 is discharged under the action of the first air suction and waste discharge device 10, and the leakage-proof partition edges at two sides are conveyed to the compound roll 9 along the unreeling path. As shown in fig. 1, the first roll cutting assembly 5 is located on the upper side of the water-repellent nonwoven fabric 3. First waste device 10 that wastes discharge that induced drafts is located the first roll of refusing water non-woven fabrics 3 upside and is cut between assembly 5 and the mechanism of scraping the gum, also can be located the first roll of refusing water non-woven fabrics 3 downside and cut between assembly 5 and the mechanism of scraping the gum, and the restriction is not done to specific position, selects according to actual conditions is nimble.
As shown in fig. 4, the first roller cutting assembly 5 is provided with a cutting blade 12, which has a structure corresponding to that formed by contacting two cutting blades 12 close to each other in fig. 3, and the curved blades 13 close to each other in fig. 3 form a shuttle-shaped cutting blade. The first roll cutting assembly 5 rotates, the water-repellent non-woven fabric 3 is cut into two pieces of cloth by the cutter, and the water-repellent non-woven fabric cut off by the shuttle-shaped cutter is discharged by the first air suction and waste discharge device 10. At least one guide roller (not shown) is provided to separate the two water-repellent nonwoven fabrics 3, and the water-repellent nonwoven fabrics are conveyed to the laminating roller 9 and laminated on both sides of the intermediate face layer 4. By adopting the cutter structure in the figure 4, materials are better saved, and only the water-repellent non-woven fabric cut off by the shuttle-shaped cutter part needs to be discharged when waste is discharged.
In one embodiment, the second rolling cutting assembly 6 is positioned on the upper side of the middle surface layer 4, and a second suction waste discharge device 11 is arranged between the second rolling cutting assembly 6 and the composite roll 9. The second suction waste device 11 may be located on the upper side of the middle layer 4, or may be located on the lower side of the middle layer 4, and the specific location is not limited. As shown in fig. 7, the middle surface layer 4 after being cut by the second roll cutting assembly 6 is three pieces of cloth, the middle surface layer 4 is cut into a straight strip shape at the front part, and the back part is in a fan-tail structure and is arranged periodically. The middle surface layers 4 on the two sides are discharged by the second air suction and waste discharge devices 11, and specifically, the middle surface layers 4 on the two sides are respectively and correspondingly provided with at least one second air suction and waste discharge device 11. The middle intermediate layer 4 is conveyed along the unwinding path to the compound roller 9.
As shown in fig. 2, in one embodiment, the glue scraping mechanism comprises a first glue scraping gun 7 and a second glue scraping gun 8, the first glue scraping gun 7 is used for adding structural glue to the straight edge of the front part of the leakproof isolation boundary, the second glue scraping gun 8 is used for adding structural glue to the radian edge of the rear part of the leakproof isolation boundary, and the structural glue at the straight edge and the radian edge is located on the same side. The specific first glue scraping guns 7 are arranged in two, and structural glue is added to straight strip-shaped edges at the front parts of the leak-proof separation edges symmetrically distributed on two sides respectively.
In one embodiment, the number of the second glue guns 8 is even and the second glue guns are symmetrically distributed. Specifically, in one embodiment, the second glue scraping guns 8 on the same side are distributed in a staggered manner, and the second glue scraping guns 8 distributed in a staggered manner are used for adding structural glue to the radian edge at the rear part of the leakage-proof partition edge. The second is scraped and is glued rifle 8, sets up 4 (including two inboard scrapes gluey rifle 82 and two outsides and scrape gluey rifle 81), and the effect that adds the structure and glue is shown in fig. 9, and the second that the dislocation distributes is scraped gluey rifle 8 and is added the structure at different radian edges and glue, and the number of second scraping gluey rifle 8 is according to the nimble selection of the condition at radian edge, and the number that the second scraped gluey rifle 8 is more, and the shape that the structure that adds is glued is more anastomotic with the radian edge.
In one embodiment, the structural adhesive added on the leakproof isolation edge is 3-10mm wide. The specific width is flexibly selected according to the actual situation, and can be selected to be 5mm, for example.
As shown in fig. 1, in one embodiment, the spreading mechanism is located between the water-repellent nonwoven fabric 3 and the intermediate layer 4. The glue scraping mechanism adds the structural glue to one side of the water-repellent non-woven fabric 3 close to the middle surface layer 4, and the water-repellent non-woven fabric 3 and the middle surface layer 4 after the structural glue is added are conveyed forwards to the compound roller 9 for compounding.
In one embodiment, the intermediate layer 4 is a hydrophilic or semi-hydrophobic material. The specific middle surface layer 4 is made of hydrophilic all-cotton material, the middle surface layer 4 is hydrophilic and beneficial to liquid absorption, and the all-cotton material has good skin-friendly performance.
In one embodiment, the water-repellent non-woven fabric 3 and the middle axis projection of the middle surface layer 4 are aligned. The projection of the middle axis is aligned, which is helpful for symmetrically compounding the leak-proof separation edges which are symmetrically distributed at both sides to both sides of the middle surface layer 4. In practice, the first unwinding roller 1 and the second unwinding roller 2 are controlled so that the water-repellent nonwoven fabric 3 and the intermediate face sheet 4 have the same conveying speed.
The present application has been described with reference to specific examples, which are provided only to aid understanding of the present application and are not intended to limit the present application. For a person skilled in the art to which the application pertains, several simple deductions, modifications or substitutions may be made according to the idea of the application.
Claims (10)
1. The utility model provides a prevent edge leakage sanitary towel production facility, includes core processingequipment, leak protection surface course processingequipment and water conservancy diversion layer set composite, its characterized in that, leak protection surface course processingequipment includes:
the first unwinding roller (1) is used for unwinding the water-repellent non-woven fabric (3); the second unwinding roller (2) is used for unwinding the middle surface layer (4); the unwinding paths of the first unwinding roller (1) and the second unwinding roller (2) are intersected;
the second roll cutting assembly (6) is positioned on the unwinding path of the second unwinding roll (2) and is used for cutting the middle surface layer (4) to enable the front part of the middle surface layer (4) to be in a straight strip shape and the rear part to be in a fan tail shape; the first roll cutting assembly (5) is positioned on the unwinding path of the first unwinding roll (1) and is used for cutting the water-repellent non-woven fabric (3) into two symmetrical leakage-proof separation edges, the front parts of the leakage-proof separation edges are straight strips, and the rear parts of the leakage-proof separation edges are provided with arc edges corresponding to the fan tail shapes of the middle surface layer (4);
the composite roller (9) is positioned at the intersection of the unwinding paths of the first unwinding roller (1) and the second unwinding roller (2) and is used for symmetrically compounding the two cut leakage-proof separation edges to the two sides of the cut middle surface layer (4);
the first roll cutting assembly (5) and the second roll cutting assembly (6) are both cylindrical, and at least two cutters (12) are respectively fixed on the circumferential side surfaces; the cutter (12) is annular along the axis direction of the cylinder; arc-shaped cutters (13) are respectively arranged on the two cutters (12) in the direction away from each other along the direction vertical to the axis of the cylinder, and the rest two cutters (12) are straight lines parallel to each other;
first roller cut assembly (5) with set up on the route of unreeling between compound roller (9) and scrape gluey mechanism, it is used for adding structural adhesive to scrape gluey mechanism leak protection separate the edge.
2. The apparatus for producing sanitary napkins for preventing lateral leakage according to claim 1, wherein a first air suction and discharge device (10) is provided between said first roll cutting assembly (5) and said wiping mechanism.
3. The apparatus for producing sanitary napkins for preventing lateral leakage of claim 1, wherein a second suction waste device (11) is provided between said second slitting assembly (6) and said composite roll (9).
4. The apparatus for producing side-leakage-proof sanitary napkins according to claim 1, wherein said glue-scraping mechanism comprises a first glue-scraping gun (7) and a second glue-scraping gun (8), said first glue-scraping gun (7) is used for adding structural glue to the straight-strip-shaped edge of the front portion of said leakage-proof barrier, said second glue-scraping gun (8) is used for adding structural glue to the arc-shaped edge of the rear portion of said leakage-proof barrier, said structural glue at the straight-strip-shaped edge and at the arc-shaped edge are located on the same side.
5. The apparatus for producing sanitary napkins for preventing lateral leakage according to claim 4, wherein said second glue guns (8) are provided in an even number and are symmetrically distributed.
6. The apparatus for producing sanitary napkins for preventing lateral leakage of wearer as claimed in claim 5, wherein said second glue guns (8) on the same side are arranged in a staggered manner.
7. The apparatus for producing sanitary napkins for preventing lateral leakage of claim 4, wherein the width of the structural adhesive added to the leakage-preventing barrier side is 3-10 mm.
8. The apparatus for producing sanitary napkins for preventing lateral leakage according to claim 1, wherein said glue spreading means is located between said water-repellent nonwoven fabric (3) and said intermediate face layer (4).
9. The apparatus for producing sanitary napkins for preventing lateral leakage of claim 1, wherein said intermediate cover sheet (4) is made of hydrophilic material or semi-water repellent material.
10. The apparatus for producing side-leakage-preventing sanitary napkins according to any of claims 1 to 9, wherein the water-repellent nonwoven fabric (3) and the intermediate face layer (4) are aligned in projection with their intermediate axes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022058233.0U CN213963948U (en) | 2020-09-18 | 2020-09-18 | Side leakage prevention sanitary towel production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022058233.0U CN213963948U (en) | 2020-09-18 | 2020-09-18 | Side leakage prevention sanitary towel production equipment |
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| CN213963948U true CN213963948U (en) | 2021-08-17 |
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| CN202022058233.0U Active CN213963948U (en) | 2020-09-18 | 2020-09-18 | Side leakage prevention sanitary towel production equipment |
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| CN (1) | CN213963948U (en) |
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