CN1088493C - Drywall corner finishing device - Google Patents

Abstract

The present invention relates to a finishing device for forming inside and outside corners between two drywall panels (804). To form the inside corner, the finishing device is bent along the flexible joint (100). Two wings (102, 104) are connected to the flexible joint (100) and extend outwardly in a diverging manner relative to the flexible joint, thereby forming an angularly adjustable corner. To form the outside corner, the slats (208, 210) parallel to the flexible joint (100) are removed from the rear surfaces (108) of the wings (102, 104), and the finishing device is folded along the opening thus formed.

Description

Drywall Corner Finishing Devices

The invention relates to a facing device for interior wall finishing treatment.

Drywall panels are widely used in the construction industry to form ceilings and interior walls of rooms. Drywall panels consist of a core of stucco or a paper-covered, reinforced stucco core. Drywall panels have the advantage of being easy to cut to size and fastened to a variety of framing. However, it is difficult to cut drywall panels in such a way that the edges remain straight and smooth, and straight corners can be formed, which are desirable from an aesthetic point of view. Additionally, when the drywall panels are cut to size, the edges of the panels are exposed. This exposed stucco core is soft and will crumble easily if the cut edges are not protected to some extent. This is especially important at outside corners.

When walls and ceilings are constructed from framing components, such as timber, the resulting inside and outside corners rarely remain straight. Minor dimensional errors in wooden framing components, warping of wood, and inconsistencies in construction work can cause unevenness at the intersection of walls and ceilings, and at the ends of walls at doorways and passages. corner. When the drywall panels are later secured to the bending framing members, the intersections between them will also bend.

Various devices have been used to provide a smooth and durable finish to the intersection where two drywall elements are pressed against each other to form an inside or outside corner. Among the common devices employed above are drywall tape and metal corner moldings. Common drywall tape is supplied in rolls of relatively narrow, elongated strips or strips of porous paper. The paper is sometimes perforated to increase moisture vapor permeability and prevent air bubbles from forming behind the above-mentioned tape. The drywall tape described above is first applied to the joints and the edges of the drywall panels pressed against each other, which are then covered with plaster, sometimes referred to as "mud". A beveled edge of stucco was formed along the edge of the tape and smoothed to cover the boundary between the edge of the tape to which the tape was applied and the drywall board. When the grout is dry, the tape and drywall can be painted or otherwise covered with a suitable wall covering.

Applying the plaster to both sides of the inside corner requires a lot of skill in order to achieve a straight intersection. In addition, to compensate for the above-mentioned warping of frame components and buckling caused by uncoordinated construction work, multiple layers of stucco must often be applied with a required drying time of a full day between each coat. Even then, straight corners are rarely obtained. Likewise, a plastering trowel can damage side 1 of the plaster while applying side 2 if a very skilled operator is not used. Once the plaster has been applied and dried, it must be sanded to a suitable finish to provide a surface suitable for painting or wallpapering.

Coffered and vaulted ceilings have recently become very popular among home construction contractors and buyers. The tops of the aforementioned ceilings often form acute angles. It is difficult to fit an ordinary plastering trowel into the aforementioned angle.

Since the drywall tape is formed of paper, it is relatively flexible and will conform to the various surface topography of the edges of intersecting drywall panels. When conventional drywall tape is applied to the outside corners of the wall, the flexibility of said tape results in irregular shapes as the tape conforms to the non-straight shape of the exposed, severed edges in the drywall panels corner boundaries. The above-mentioned tapes are also easily damaged and do not hold upright, thereby exposing the outside corners to permanent, actual damage. As a result, ordinary drywall tape cannot be used on exposed outside corners.

Therefore, in order to finish the outside corners in building construction, people often use metal corner fillets. The cross-section of ordinary metal corner round bars is L-shaped or angle steel-shaped, which is generally made of long metal with holes, such as galvanized steel strips, which are permanently deformed by bending at 90° to form Long angle steel. The aforementioned metal corner fillets are generally located at the intersection of adjacent drywall panels that intersect perpendicularly to form an outside corner in the interior. The metal corner fillet portion is secured to the wooden support structure behind the drywall panel by driving a nail through the drywall panel.

Plaster is then applied over it to cover the metal flange or leg members in the metal corner fillets, the edges of the plaster are smoothed, and a beveled edge is formed to cover the metal edges.

While the rigidity of metal corner moldings allows for sharp straight edges on the outside corners of building interior walls, where the above decoration would be aesthetically pleasing, some serious problems arise with the use of metal corner moldings. After a period of time, the metal corner round lines will rust, thereby producing rust spots, which can be clearly seen on the wall surface at the corners. It is generally not possible to cover the entire edge of the metal flange or nail cap used to secure the metal corner round moldings to the drywall panels as this would interfere with the desired smooth appearance of the wall. Cracks often develop in the overlying plaster at the outside edges of the flanges. To avoid this, 2 or 3 coats of stucco are often applied, allowing up to 24 hours for the existing coat to dry and harden before the next coat is applied. When such corners are bent or jagged due to problems with the underlying framing, the metal corner fillets do not cover a large enough surface area, or are not flexible enough to compensate for the resulting unevenness. Another problem: The malleable metal that makes up the metal corner fillets can dent or wrinkle, which can then be difficult to straighten to create a smooth finish. Due to the rough handling to which most materials are subjected at the construction site, the above-mentioned planks often wrinkle, dent, or warp, rendering them unusable, or producing only poor end results. In addition, the aforementioned metal laths will be used in large quantities during construction, which will result in higher costs.

In order to solve the above-mentioned problems, people have developed multiple drywall corner facing devices. Among these devices are the following forms:

Inventor Patent No. Publication Date

Swanson US3444657 May 20, 1969

Baker US3989397 November 2, 1976

Ellingson US4012878 April 22, 1977

Lamb US4313991 February 2, 1982

Schaafsma US4315390 February 16, 1982

Weinar US4553363 November 19, 1985

Schneller US4624087 November 25, 1986

Bernard US4719732 January 19, 1988

Tucker US4863774 September 5, 1989

Conboy US5037686 August 6, 1991

Tucher US5045374 September 3, 1991

Weldy US5086598 February 11, 1992

Ritchie et al US5131198 July 21, 1992

The Swanson and Lamb patents describe joint strips made of plastic that can be reverse bent so that they can be adhesively secured to the inside and outside corners.

The Baker patent shows an outboard corner connector for the foot of a water mattress in which the plates forming the foot are embedded in said connector.

The Ellingson patent provides a double wall member protection structure made of elastic material for the outside corners.

The Schaafsma patent describes two wall panel corner pieces, one for inside corners, which is fixed by putty, and one for outside corners, which is fixed by the drywall itself. The disadvantage of the first type of wall panel corner piece is that it is only fixed by the putty; if the putty does not bond well to the drywall, the corner piece will loosen. The outside corner fittings must be placed under the drywall panels, which requires extensive bonding, and if the outside corner fittings are placed on the front corners of the drywall panels, the drywall panels will still A certain amount of extra work is done to secure the corner piece. Both of these corner pieces are taped to provide a smooth top finish that can be combined with a drywall finish by plastering and sanding.

The Weinar patent provides a plastic or metal T-shaped corner construction in which the T-shaped struts are positioned between two pressed against each other drywall components and the crossbar is positioned above the drywall panels. A paper covering is partially wrapped around the rail from a drywall panel to provide a decorative appearance, forming a protrusion along one side of the corner piece. This corner construction can only be used on outside corners.

The Scheller patent describes another metal outside corner fillet in which an additional flange extends beyond the edge of the drywall panel forming the outside corner. Projections are formed on both sides of the corner piece, and the corner fillet can only be used for the outer corner.

The Bernard patent presents an L-shaped outside corner cladding made of plastic as a means of securing and as a means of forming a smooth connection between said cladding and drywall, using heat along both arms. Shrinkable plastic tape. The wrapping described above can be used for outside corners with various angles.

The Tucker patent provides a strip of paper drywall including a centrally disposed plastic corner fillet extending longitudinally along the strip. The above strips are secured to the drywall with plaster. The plastic corner fillets are only used for outside corners.

Conboy's patent describes a drywall plastic tape that can be used on inside and outside corners. In addition, the above-mentioned plastic tapes are fixed on the corners by plaster, and the plaster is used to provide a decorative appearance.

Another Tucker patent describes a rigid plastic plank having a curved middle and two flanges secured to the outside or inside corners by adhesive. Strips of paper tape and plaster are then covered over the flange.

The Weldy patent provides a wall edge system for inside and outside corners comprising a plastic batten including a curved middle portion to which two flanges are secured perpendicularly. The above battens are secured to the drywall by nails. Plaster is then smoothed over the above-mentioned slats to finish the edge. The interior side of the above-mentioned slats can be finished with a primer.

The Ritchie et al. patent describes a corner molding for outside corners that includes a metal core and is completely covered by paper. The above-mentioned wall corner round lines include arc-shaped convex parts and flanges. An enhanced emulsifier may also be applied to the above paper cover. Nail the above corner fillets to the drywall and cover the edge with plaster.

There is a need to provide a drywall corner finishing device that can be used with outside and inside corners having a variety of angles and that can provide a primed surface for any orientation. There is also a need to provide a drywall corner finishing device that can be used to cover side-by-side outside corners that can accommodate interior doorways, or other openings of various sizes , such as found at the edges of hallways between rooms. Due to warped building components and curved corners caused by uncoordinated construction work, it is desirable to provide a corner finishing device that provides straight corner. There is also a need to provide a finishing device which simplifies the installation of drywall in acute corners and which minimizes the need for stucco. None of the drywall corners described above can meet the above needs.

The drywall corner finish device of the present invention can be used on inside and outside corners having a variety of angles. Building construction contractors don't have to order two or more styles to cover different kinds of corners. The drywall corner finish set of the present invention can also be used to cover two adjacent outside corners without the need for narrower drywall battens between the corner and the two finish sets , the above-mentioned two finishing devices are respectively used for one outer corner. The primer layer, or laminate cover member, covers the interior facing side of the drywall corner finish device of the present invention. Due to the effect of the primer layer or laminate described above, stucco is required on the outside edges of the drywall corner finish unit only where it is pressed against the drywall. The drywall corner finisher of the present invention has a width substantially equal to the width of the drywall panels, thereby requiring little mortar to fill the area where the drywall panels meet the finisher. Regardless of the degree of irregularity of the error, the drywall corner finish device of the present invention caps curved, uneven corners. The drywall corner finish device of the present invention provides stability to the drywall by fastening directly to the frame members of the wall by nails.

A finishing device for forming a corner between two drywall panels includes a flexible joint extending along a predetermined axis. Two wings are connected to the flexible joint and extend outwardly in a diverging manner relative to the flexible joint, thereby forming corners with adjustable angles. Each wing includes a front surface, a rear surface, and an edge remote from the flexible joint. The edge is pressed against one of the drywall panels and has a thickness substantially equal to the thickness of the drywall panel. A primer layer or adhesive laminate is applied to the front surface of the wings so that paint, wallpaper or other wall coverings can be adhered to the front surface. The facing means described above may form inside and outside corners. To form the inside corner, the facing device is bent along the flexible joint. To form the outside corners, the slats held parallel to the flexible joints are removed from the rear surfaces of the wings and the facing device is folded along the openings formed.

The invention can be more easily understood with reference to the following figures.

Figure 1 is a partial perspective view of a drywall corner facing device of the present invention;

Figure 2 is a cross-sectional view of the drywall corner facing device of the present invention;

Figure 3 is a detailed cross-sectional view taken from the portion marked by outline in Figure 2, showing the front surface of the drywall corner facing device of the present invention covered with a primer layer;

Figure 4 is a detailed cross-sectional view taken from the portion marked by outline in Figure 2, showing the front of a second embodiment of the drywall corner facing device of the present invention covered with bonded laminate components; surface;

Figure 5 is a cross-sectional view of the drywall corner finish device of the present invention bent to fit an inside corner;

Figure 6 is a specific cross-sectional view of the intermediate joint of the drywall corner facing device shown in Figure 2;

Figure 7 is a specific cross-sectional view of the intermediate joint of the drywall corner facing device shown in Figure 5;

Figure 8 is a cross-sectional view of the drywall corner finish device of the present invention for use in an inside corner between a wall and a ceiling;

Figure 9 is a cross-sectional view of the drywall corner finish device of the present invention suitable for use in inside corners located on top of ceilings;

Figure 10 is a cross-sectional view of the drywall corner finish device of the present invention suitable for use around two outside corners;

Figure 11 is a cross-sectional view of the drywall corner facing device of the present invention suitable for use around two outside corners spaced apart by a distance greater than the spacing of the outside corners shown in Figure 10;

Figure 12 (a) is the detailed cross-sectional view of the detachable batten in the drywall corner facing device of the present invention;

Figure 12(b) is a specific cross-sectional view of the detachable slat in Figure 12(a) in a disassembled state;

Figure 12(c) is a detailed cross-sectional view showing how the drywall corner facing unit folds after the removable battens shown in Figure 12(a) have been removed;

Figure 13 is a cross-sectional view of the drywall corner facing device of the present invention showing the application of stucco to the joint;

Figure 14 is a cross-sectional view of another embodiment of a drywall corner finish device.

Referring to FIG. 1 , a left wing 102 and a right wing 104 in a drywall corner veneer strip are secured to a flexible intermediate joint 100 and extend outwardly from there to a distal edge 110 . The wings 102 , 104 include a front surface 106 and a rear surface 108 . The front surface 106 and the rear surface 108 extend outwardly beyond the distal edges 110 of the wings 102 , 104 to cover the distal edges 110 . When a drywall corner finish device covers an inside corner or an outside corner, the rear surface 108 of the device is juxtaposed with the interior wall frame and the front surface 106 faces the interior and is aligned with the surface of the drywall panels that make up the wall. keep it continuous. The front surface 106 may be covered with a primer layer 300 as shown in FIG. 3 so that any paint or wall covering used to eventually finish the wall is easily adhered to. Alternatively, the front surface 106 may include an adhesive laminate member 400 secured thereto in the manner shown in FIG. 4 .

The structure of the drywall corner facing device can be more clearly observed from Figure 2. The flexible intermediate joint 100 is preferably arcuate, but it is understood that any joint shape, such as V-shaped, U-shaped, C-shaped, etc., can be used, which allows the above-mentioned device to bend through various angles at the intermediate joint 100. The intermediate joint 100 extends along an axis extending in a straight line, thereby forming corners or edges.

A plurality of struts 206 separates the rear surface 108 of each wing 102 , 104 from the front surface 106 of each wing 102 , 104 . In the preferred embodiment shown in Figures 1 and 2, the struts 206 are configured to provide stability to the structure of the corner fittings and to allow the fittings to fold relative to the outer corners, as will be discussed later. specific description. It will be obvious to those of ordinary skill in the art that the structural form of the strut 206 shown in FIGS. inventing.

An edge 202 in the rear surface 108 projects relative to an edge 200 of the front surface 106 . The distal end 204 in the front surface 106 is slightly sloped towards the rear surface 108 so that, as will be described in more detail below, a drywall panel can be positioned in the space 114 between the front surface 106 and the rear surface 108 , so that the edge 202 in the rear surface 108 and the edge 200 in the front surface 106 are snugly disposed alongside the drywall panels. The rear surface 108 includes a plurality of removable battens 208, 210 which are removed when the drywall corner finish unit needs to be folded relative to the outside corner, as will be described later. for a specific description.

Figure 8 shows the inside corner formed when vertical walls are fitted with a coffered or cathedral ceiling. Fig. 9 shows the inner corner formed at the vault of the above-mentioned ceiling. Depending on the design of the building, these corners may have included angles ranging from approximately 45° to 180°. When the drywall corner finisher is used to trim an inside corner, the rear surface 108 is first pressed directly against the wall frame. The intermediate joint 100 is flexibly deformed, and it changes from the state where the included angle is 180°, as shown in FIG. 6, to the following suitable angle state. necessary, as indicated by arrow 500 in FIG. 5 and arrow 700 in FIG. 7 .

As an example, in FIG. 8 , the drywall corner finish unit is secured to wall framing 800 and ceiling rafters 802 by nails 806 . The drywall corner finisher is made of plastic that is sufficiently flexible so that a nail can be driven through the flange of the rear surface 108 by hammering without the need for pre-made holes. It will be apparent that other means, such as the use of screws, bolts, adhesives, etc., can be used to achieve the same result in securing the drywall corner finish unit to the wall or ceiling. The mounting position of the device described above, as well as the position of the nail 806, can be varied so that the device compensates for unevenness within the frame and between one frame part 800 and another frame part. If desired, shims may be placed behind the device prior to securing the device by means of nails 806 . After the above device has been secured securely to the frame 800 and rafters 802, the edge of the drywall panel 804 is inserted into the space 114 between the front surface 106 and the rear surface 108 so that the edge of the drywall panel 804 is pressed against the wing portion 102,104 on the distal edge 110. As can be seen in FIG. 8, the space 114 between the front surface 106 and the rear surface 108 is of just sufficient size to receive the drywall panel 804, and the front surface 106 and the rear surface 108 are snugly positioned alongside the drywall panel 104 . The drywall panels 804 thus hold the nails 806 in place. Drywall panels 804 are secured to frame 800 and rafters 802 in the usual manner.

As shown in FIG. 13, plaster 1300 is applied to the sloped distal portion 204 in the front surface 106, as well as the sloped edge in the drywall panel 804, to cover the edge 200 and provide a smooth level surface. Since the stucco 1300 is applied only at the angled distal end 204 in the drywall corner finish device, this avoids the difficulties associated with plastering the corner area. The difficulties include difficulty maneuvering the plastering trowel in the corner area, the need for a skilled person to make a straight edge where the two sides meet at the corner, the need to form multiple layers of stucco 1300 in order to apply the drywall corner finish and drywall, or to compensate for irregularities due to dimensional errors, setting errors, or warped framing components, and each of the above Mud layers take a lot of time to dry. Once the plaster is applied, the wall is finished by applying paint, wallpapering, or other desired means. The primer 300 applied to the front surface 106 allows paint or other wall coverings to adhere to the front surface 106 of the drywall corner finish device. In another embodiment, the laminated component 400 may be adhesively secured to the front surface 106 to provide a surface for later application of paint.

Fig. 9 shows a second example of using a drywall corner finishing device for an inside corner. Here, the drywall corner finish device includes substantially the same inside corner as described above, only here the corner is formed by the vaulting of the coffered ceiling. The device is secured to the rafter 900 by driving a nail 904 through the flange 112 . The fixed position of the above-mentioned device and the position of the nail 904 can be changed so that the device can compensate for unevenness which is produced inside the rafter 900 and between one rafter 900 and another rafter. generated in between. If desired, shims may be placed behind the above-mentioned device before securing the device with nails 904 . The edges in the drywall panel 902 are then embedded in the space 114 between the front surface 106 and the rear surface 108 . As noted above, these spaces 114 are of just sufficient size to receive the edges of the drywall panels 902 so that the front surface 106 and the rear surface 108 are snugly disposed alongside the drywall panels 902 . The drywall panels 902 thus cover the nails 904 . Drywall panels 902 are secured to rafters 900 in the usual manner. The stucco 1300 is then applied at the sloped distal portion 204 in the front surface 106 and the edge of the drywall panel 902 to provide a level surface. Since the primer layer 300 or laminate 400 covers the front surface 106, there is no need for plaster on the remainder of the front surface 106, avoiding the difficulty of plastering the narrow angular range formed by the inside corners. Then paint is laid on the surface of the above-mentioned body of wall or carry out decorative treatment in other required ways.

The outside corners often adjoin each other. 10 and 11 show two examples of the above-mentioned outside corners. FIG. 10 shows the outside corner formed by the frame panels 1000 , 1002 , and FIG. 11 shows the outside corner formed by the frame panels 1100 , 1102 . The rear surface 108 includes at least two sets of removable slats 208,210. It will be apparent that the removable slats 208, 210 may be located at any suitable location within the rear surface 108, and that the invention is not necessarily limited to the locations of the slats 208, 210 shown in the drawings. When frame panels 1000, 1002 are used, the slats 208 are removed, and when frame panels 1100, 1102 are used, the slats 210 are removed. Once the slats 208 or 210 are removed, the front surface 106 can be curved relative to the two outside corners. The above-mentioned method will be described below, and it is illustrated by FIGS. 12( a ) to 12 ( c ).

Removable slats 208 are retained between struts 206 parallel to rear surface 108 by a plurality of tabs 1200 . In order to remove the strip 208, it is only necessary to break the lamellae 1200 off. The slats 208 are then disassembled in the direction of arrow 1202 and discarded. The front surface of each wing 102, 104 is then bent inwardly in the direction of arrow 1204 to form a mating corner around the adjacent outside corner of the frame. The strips 210 are removed in the same manner so that the facing device can be bent around the two more spaced outside corners of the frame.

Once the battens 208 or 210 are removed and the front surface 106 is bent, the drywall corner finish is secured to the frame panels 1000 or 1102 by nails. The fixed position of the above-mentioned device, as well as the position of the nails can be changed so that the above-mentioned device can compensate for unevenness due to incongruity in building construction, or warping or dimensional errors Frame panels 1000, 1002, 1100, 1102 are produced. Shims are placed behind the device before securing the device by the nails 1004, 1104, if desired. For inside corners, insert drywall panels 1006, 1106 in the manner described above, for inside corners, as described above, and in the same manner as shown in Figure 13, for drywall corner finishers and drywall The seams between the panels 1006, 1106 are finished.

Figure 14 shows a cross-sectional view of another embodiment of the present invention. This embodiment is provided with only one set of detachable slats 210 equidistant from the intermediate joint 100 . Additionally the number and shape complexity of the struts 206 is reduced to simplify the fabrication of the device by plastic extrusion. In addition, the arrangement of the distal struts 207 has been changed to provide greater support for the angled end 204 in the front surface of the device. If a portion of the rear flange 112 is pulled back to accommodate an unevenness in the rafter, the distal struts 207 will keep the sloped front surface 204 of the arrangement in a straight-edged state despite the resulting unevenness in the rafter below. Uneven. If the device described above is molded from some kind of flexible plastic, the end struts 205 would deform in the desired manner to accommodate the unevenness described above.

The foregoing specification describes several embodiments of the invention. Other constructions or

Examples are implemented.

Claims (23)

CLAIMS 1. A finishing device, primarily for forming a corner between two drywall panels, the drywall panels including an edge having a predetermined thickness, said finishing device comprising: a flexible joint extending along a predetermined axis; two wings connected to the joint and extending outwardly in a diverging manner relative to the joint to form corners with adjustable angles, each wing comprising a front surface and a . An edge engaging one of the drywall panels, wherein said distal edge has a thickness approximately equal to the edge thickness of said drywall panel. 2. The veneer device of claim 1, further comprising a layer applied to the front surface of said wings to allow the paint to adhere to the front surface. 3. The finishing device of claim 2, wherein said layer comprises a primer. 4. The facing device of claim 2, wherein said layer comprises an adhesive laminate. 5. The facing device according to claim 1, wherein said flexible joint has a substantially arc-shaped cross-section. 6. The facing device according to claim 1, wherein said wing portion includes a front surface and a rear surface spaced apart from each other by a plurality of struts in a manner substantially parallel to each other, the plurality of A strut extends between the front surface and the rear surface. 7. The facing device of claim 6, wherein said front surface extends outwardly beyond the distal edge to cover said drywall panel. 8. The facing device of claim 6, wherein said rear surface extends outwardly beyond said distal edge to form a flange that secures the facing device to the frame. 9. The facing device of claim 6, wherein said rear surface further includes a strip substantially parallel to said flexible joint, said strip being removable to allow a corresponding portion of the front surface to produce A bend forming a corner at a predetermined distance from the flexible joint. 10. A drywall corner finish device comprising: a flexible joint extending along the central longitudinal axis of the device; two wings connected to the flexible joint and extending outwardly in a diverging manner relative to the flexible joint, the wings comprising a front surface and a rear surface, the front surface and the rear surface are substantially held in relation to each other spaced apart in a parallel manner, said means further comprising an edge remote from and parallel to said flexible joint, wherein said distal edge has a thickness substantially equal to the thickness of the drywall panel; at least two slats located in said rear surface substantially parallel to said flexible joint and at a predetermined distance from said flexible joint, said two slats being removable so that the front surface is relatively flexible The joint maintains at least two outer corner folds at a predetermined spacing. 11. The facing device of claim 10, wherein a plurality of struts extend between the front surface and the rear surface. 12. A facing device according to claim 10, characterized in that the device is made of plastic. 13. The facing device of claim 10, wherein said front surface extends outwardly beyond said distal edge to cover an edge of said drywall panel. 14. The veneer device of claim 10, wherein said rear surface extends outwardly beyond said distal edge to form a flange that secures the device to the frame. 15. The facing device of claim 10, wherein said front surface is sloped toward the rear surface. 16. The facing device of claim 10, wherein the device is foldable at multiple angles at the flexible joints to accommodate multiple angled inside corners. 17. The facing device according to claim 10, wherein the front surface is covered by a laminated member. 18. The finishing device of claim 10, wherein the front surface is covered with a primer. 19. A drywall corner finish apparatus for forming a corner between two drywall panels, the drywall panels comprising an edge having a predetermined thickness, the apparatus comprising: an arcuate joint extending along the central longitudinal axis of the device, the joint allowing the device to fold at various angles at the joint; Two wing parts, these two wing parts are connected with above-mentioned arc-shaped joint, and extend outwardly with respect to this arc-shaped joint bifurcation mode, and above-mentioned wing part comprises the far-end edge that keeps parallel with above-mentioned central axis, and above-mentioned wing part comprising a front surface and a rear surface spaced apart in a manner maintained substantially parallel to each other, the front surface and the rear surface projecting outwardly beyond the distal edge of the device and between the two surfaces space between them, the dimensions of which are equal to the thickness of the edges in said drywall panels; A plurality of struts disposed between the front surface and the rear surface. 20. The facing device according to claim 19, characterized in that at least two slats are included in said rear surface, these two slats are kept substantially parallel to each other, and they keep a predetermined distance from said arc joint, said The slats are removable so that the device can be bent relative to the two juxtaposed outside corners. 21. The facing device of claim 19, wherein said front surface slopes toward the rear surface. 22. The facing device according to claim 19, wherein the front surface is covered by a laminated member. 23. The finishing device of claim 19, wherein the front surface is covered with a primer.

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