Patent Application
20210140179
The present disclosure relates generally to building surface joint supports, for example, suitable for covering a seam between two building surface panels.
Building surface panels, such as drywall panels, are commonly used to create walls, ceilings, and other building surfaces in homes, businesses and other buildings. The panels are typically attached to a frame that holds the panels in place. Often, the edges between the panels are covered in order to create a smooth surface from one panel to the next. For example, in many instances, the joints or seams between adjacent panels are covered with a joint compound that is shaped to form a flat surface or clean corner at the joint. To strengthen the joint, the neighboring panels can be secured with a joint support, such as joint tape or a corner bead. The joint support aids in both securing the surface between the two panels, and in providing the desired shape at the seam.
Typical methods of installing a joint support include applying a preliminary layer of joint compound and fastening the joint support to the preliminary layer of joint compound. However, this method requires waiting for the first layer of joint compound to dry before moving on to subsequent steps. In some cases, the builder must wait up to 24 hours or longer before advancing to a subsequent step in the construction process. Other methods of installing joint supports use mechanical fasteners to attach the joint support to the building surface panels. For example, conventional metal corner beads are often attached to building surface panels using screws. This process is time consuming and requires the use of a specific tool. Moreover, it can require specific expertise to adequately obscure the mechanical fasteners after the building surface is completed. Accordingly, the present inventors have determined that a joint support that can be installed more easily and efficiently would be attractive to builders and customers.
The present disclosure relates generally to building surface joint supports, for example, suitable for covering a seam between two building surface panels.
In one aspect, the present disclosure provides a joint support comprising:
In another aspect, the disclosure provides a building surface construction using the joint support of the disclosure, the building surface construction comprising:
In another aspect, the disclosure provides a method of installing the joint support of the disclosure so as to form a building surface construction according to the disclosure, the method comprising:
Additional aspects of the disclosure will be evident from the disclosure herein.
The accompanying drawings are included to provide a further understanding of the methods and devices of the disclosure, and are incorporated in and constitute a part of this specification. The drawings are not necessarily to scale, and sizes of various elements may be distorted for clarity. The drawings illustrate one or more embodiment(s) of the disclosure, and together with the description serve to explain the principles and operation of the disclosure.
As described above, the present inventors have noted that conventional joint supports, such as corner beads, are time consuming to install. The present inventors have determined that a joint support that can be installed quickly and without the need for a preliminary layer of joint compound or mechanical fasteners would be attractive to builders.
Accordingly, one aspect of the disclosure is a joint support including a support strip, a first auxiliary flap, a facing sheet, and a pressure sensitive adhesive substance. The support strip has a length that extends from a first end to a second end. The support strip includes first and second elongate flanges. Each of the first and second elongate flanges extends from the first end to the second end and has an inside surface, an outside surface, an inner edge, and an outer edge. The first auxiliary flap includes an inner portion attached to the inside surface of the first elongate flange and an outer portion that extends laterally beyond the outer edge of the first elongate flange. The facing sheet is disposed on the outside surface of the first elongate flange and the outside surface of the second elongate flange. The pressure sensitive adhesive substance is disposed on at least a first portion of an inside surface of the first auxiliary flap.
Such a joint support is shown in perspective view in
Joint support 100 also includes first auxiliary flap 140 and second auxiliary flap 150. First auxiliary flap 140 includes inner portion 142 and outer portion 144. The demarcation between inner portion 142 and outer portion 144 is conceptually illustrated by the dashed line on first auxiliary flap 140. Inner portion 142 of first auxiliary flap 140 is attached to inside surface 118 of first elongate flange 110 whereas outer portion 144 of first auxiliary flap 140 extends laterally beyond outer edge 114 of first elongate flange 110. Similarly, second auxiliary flap 150 includes inner portion 152 and outer portion 154. The demarcation between inner portion 152 and outer portion 154 is conceptually illustrated by the dashed line on second auxiliary flap 150. Inner portion 152 of second auxiliary flap 150 is attached to inside surface 128 of second elongate flange 120 whereas outer portion 154 of second auxiliary flap 150 extends laterally beyond outer edge 124 of second elongate flange 120.
As shown in the schematic end view of joint support 100 provided in
Additionally, facing sheet 170 is attached to outside surface 116 of first elongate flange 110 and outside surface 126 of second elongate flange 120. Such a facing sheet can provide a smooth transition from the joint support to the building surface panel so as to minimize the visibility of the edge of the joint support. Moreover, the facing sheet can also enhance adhesion of a joint compound to the joint support.
Further, joint support 100 includes pressure sensitive adhesive substance 180 disposed on at least a first portion of the inside surface of first auxiliary flap 140 and second auxiliary flap 150. As used herein, the term pressure sensitive adhesive substance, refers to materials that assist in adhering a joint support to a building surface. In particular, a pressure sensitive adhesive substance allows the joint support to be conveniently attached to building surface panels without a layer of joint compound between the joint support and the panels. Accordingly, subsequent steps in the construction of the building surface can be carried out as soon as the adhesive is adhered to the building surface, and without the need to wait for a layer of joint compound to dry. Furthermore, the pressure sensitive adhesive substance also allows the joint support to be installed without requiring metal fasteners, which can lead to increased efficiency in the installation.
In certain embodiments of the joint support as otherwise described herein, the joint support includes a second auxiliary flap including an inner portion attached to the inside surface of the second elongate flange and an outer portion that extends laterally beyond the outer edge of the second elongate flange, and the pressure sensitive adhesive substance is disposed on at least a portion of an inside surface of the second auxiliary flap.
For example, joint support 100 includes first auxiliary flap 140 attached to inside surface 118 of first elongate flange 110 and second auxiliary flap 150 attached to inside surface 128 of second elongate flange 120, as described above. In other embodiments, the joint support includes only a first auxiliary flap attached to the first elongate flange without a second auxiliary flap attached to the second elongate flange. Such an embodiment is shown in
In certain embodiments of the joint support as otherwise described herein, the support strip includes a corner connecting the first elongate flange and the second elongate flange. For example, as shown in
In certain embodiments of the joint support as otherwise described herein, the inner portion of the first auxiliary flap and the inner portion of the second auxiliary flap connect at the corner. Such a joint support is shown in
In certain embodiments of the joint support as otherwise described herein, the inner portion of the first auxiliary flap is spaced at least 1 inch from the corner, and the inner portion of the second auxiliary flap is spaced at least 1 inch from the corner. Such a joint support is shown in
In certain embodiments of the joint support as otherwise described herein, the corner is a sharp corner that connects the first elongate flange to the second elongate flange and a groove is disposed on an inside surface of the sharp corner. Such a joint support is shown in
In certain embodiments of the joint support as otherwise described herein, the corner is a rounded corner connecting the first elongate flange and the second elongate flange so as to form a bull-nose corner bead. Such a joint support is shown in
In certain embodiments of the joint support as otherwise described herein, the joint support includes a beaded corner connecting the first elongate flange and the second elongate flange. Such a joint support is shown in
In certain embodiments of the joint support as otherwise described herein, the corner is a flexible hinge that connects the first elongate flange to the second elongate flange. Such a joint support is shown in
In certain embodiments of the joint support as otherwise described herein, the flexible hinge is made of a same material as the first elongate flange and the second elongate flange. In other embodiments, the flexible hinge may be made of another material, for example, paper, metal, woven fabric, non-woven fabric, nylon or other materials appreciated by those of ordinary skill in the art.
In certain embodiments of the joint support as otherwise described herein, the flexible hinge is thinner than the first elongate flange and the second elongate flange. For example, the material that forms flexible hinge 860 is thinner than the material that forms first elongate flange 810 and second elongate flange 820.
In certain embodiments of the joint support as otherwise described herein, each of the first elongate flange and the second elongate flange has a thickness in a range from 0.25 mm to 3 mm, e.g., from 0.7 mm to 2.3 mm, e.g., from 0.9 mm to 1.7 mm. As described herein, the thickness of the first elongate flange and the second elongate flange is a measure of the thickest area of the respective flange across its width.
In certain embodiments of the joint support as otherwise described herein, the first elongate flange tapers so as to decrease in thickness toward the outer edge of the first elongate flange, and the second elongate flange tapers so as to decrease in thickness toward the outer edge of the second elongate flange. For example, first elongate flange 810 of joint support 800 is thicker near inner edge 812, where it is closer to flexible hinge 860, and tapers toward outer edge 814, where it is thinner. In some examples, the thickness of first elongate flange tapers down to a thickness in a range from 0.25 mm to 1 mm, e.g., from 0.5 mm to 0.8 mm. Similarly, second elongate flange 820 is also thicker near inner edge 822, where it is closer to flexible hinge 860, and tapers toward outer edge 824, where it is thinner. In some examples, the thickness of the second elongate flange tapers down to a thickness in a range from 0.25 mm to 1 mm, e.g., from 0.5 mm to 0.8 mm.
In certain embodiments of the joint support as otherwise described herein, the joint support is a rolled product. For example, the use of flexible hinge 860 permits joint support 800 to be formed as part of a rolled product for convenient storage and transport. For example, joint support 800 is configured to be rolled along its length during storage. Upon installation of joint support 800, it is unrolled to its elongate form before being applied over any building surface panels.
In certain embodiments of the joint support as otherwise described herein, the first elongate flange and the second elongate flange are disposed at an obtuse angle. For example, the first elongate flange may be disposed at an angle greater than 90° from the second elongate flange. This property allows the joint support to be placed on any two building surface panels disposed at a right angle from one another. Accordingly, after the joint support is placed on the two building surface panels, pressure is applied to the joint support to decrease the angle between the first elongate flange and the second elongate flange to a smaller angle that is equal to the angle of the adjacent building surface panels. The pressure sensitive adhesive substance then holds the first and second auxiliary flaps against the building surface panels at the reduced angle. In some embodiments, the first elongate flange and the second elongate flange are disposed at an angle in a range from 30° to 180°, e.g., from 45° to 150°, e.g., from 60° to 120°, e.g., from 80° to 100°, e.g., from 90° to 100°, e.g., from 91° to 95°.
In certain embodiments of the joint support as otherwise described herein, the facing sheet is a paper facing. In other embodiments of the joint support as otherwise described herein, the facing sheet is a fiber mat. Other materials, for example foam materials, sponges, and absorbent fabrics, may also be used for the facing sheet, as will be appreciated by those of ordinary skill in the art. Further, in some embodiments, the facing sheet is made of another material that can hold an amount of adhesive within the structure of the facing.
In certain embodiments of the joint support as otherwise described herein, each of the first elongate flange and the second elongate flange has a width in a range from ½ inch to 5 inches, e.g., from 1 inch to 3 inches, e.g., from 1.5 inches to 2 inches.
In certain embodiments of the joint support as otherwise described herein, the joint support further includes a first release liner disposed on an inside surface of the first auxiliary flap and a second release liner disposed on an inside surface of the second auxiliary flap. Such release liners serve to prevent unwanted adhesion of the pressure sensitive adhesive substance with a building surface. For example, in joint support 500, first release liner 582 is attached to the inside surface of first auxiliary flap 530 and second release liner 584 is attached to the inside surface of second auxiliary flap 540. Before applying the joint support to a building surface, the release liners are peeled off or otherwise removed from the inside surface of the first auxiliary flap and the inside surface of the second auxiliary flap so as to allow the pressure sensitive adhesive substance disposed on the inside surface of the first auxiliary flap and the inside surface of the second auxiliary flap to adhere to the building surface.
In certain embodiments of the joint support as otherwise described herein, the pressure sensitive adhesive substance is configured to transition from having a first adhesive strength to having a second adhesive strength upon application of a stimulus. In certain embodiments, the pressure sensitive adhesive substance is applied in a uniform distribution over the joint support. In other embodiments, the pressure sensitive adhesive is applied in a non-uniform distribution. In yet other embodiments, the pressure sensitive adhesive is applied in a dis-continuous fashion, such as in lines, stripes, dots or patterns. A distribution of adhesives in selected areas can have manufacturing and material efficiency benefits as will be appreciated by those of ordinary skill in the art.
In certain embodiments of the joint support as otherwise described herein, the first adhesive strength is configured to form a releasable adhesive bond between the joint support and a building surface. For example, the joint support may initially adhere to a building surface with a first adhesive strength that allows the joint support to form a releasable bond with the building surface. Such a releasable bond ensures that the joint support does not become permanently bonded with the building surface and allows movement of the joint support around the building surface. In examples, a releasable bond means that at least 80% (or at least 90%, or at least 95%) of the pressure sensitive adhesive substance disposed the inside surface of the joint support is maintained on the joint support after removing the joint support from the building surface on which the joint support is placed.
In certain embodiments of the joint support as otherwise described herein, the second adhesive strength is configured to form a permanent adhesive bond between the joint support and a building surface. For example, the joint support may adhere to a building surface with a second adhesive strength that allows the joint support to form a permanent bond with a building surface. Such a permanent bond ensures that the joint support becomes securely bonded with the building surface and prevents the movement of the joint support around the building surface. In examples, a permanent bond means that the removal of the joint support will result in damage of the building surface on which the joint support is placed. In other examples, a permanent bond means that removal of the joint support from the building surface results in loss of the pressure sensitive adhesive substance from the joint support, as the pressure sensitive adhesive substance is left on the building surface as the joint support is removed.
In certain embodiments of the joint support as otherwise described herein, the first adhesive strength is weaker than the second adhesive strength. For example, a releasable adhesive bond with a building surface is weaker than a permanent adhesive bond with the building surface. In such embodiments, the joint support is at least temporarily repositionable during installation, allowing for adjustment of its configuration, before it is firmly attached in its final position.
In certain embodiments of the joint support as otherwise described herein, the stimulus is an application of pressure. In such embodiments, the adhesive strength exhibited by the pressure sensitive adhesive substance depends on the amount of pressure applied on the joint support. That is, the greater the pressure applied on the joint support with respect to a building surface, the stronger the adhesive bond between the joint support and the building surface. In some embodiments, the pressure required to permanently adhere the joint support to a building surface (e.g., transition the joint support from having a releasable bond with the building surface to having a permanent bond with a building surface) is moderate, e.g., that applied by a builder, for example by hand or with a rolling tool. In other embodiments, the pressure required to permanently adhere a joint support to a building surface is large, e.g., tens to hundreds of psi, and can be applied by a specialized tool or a machine. As will be appreciated by those of skill in the art, the necessary pressure to cause the joint support to permanently adhere to a building surface can depend on the pressure sensitive adhesive substance formulation and other considerations such as the integrity of the building surface panels and the support strip of the joint support.
In certain embodiments of the joint support as otherwise described herein, the first auxiliary flap and second auxiliary flap are formed of paper. In other embodiments of the joint support as otherwise described herein, the first auxiliary flap and the second auxiliary flap are formed of plastic or another material. For example, in some embodiments the first auxiliary flap and the second auxiliary flap are formed of a fiber mat.
In certain embodiments of the joint support as otherwise described herein, the pressure sensitive adhesive substance is disposed on the inside surface of the outer portion of the first auxiliary flap and the inside surface of the outer portion of the second auxiliary flap. In other embodiments of the joint support as otherwise described herein, the pressure sensitive adhesive substance is disposed on the inside surface of the inner portion of the first auxiliary flap and the inside surface of the inner portion of the second auxiliary flap. In yet other embodiments of the joint support as otherwise described herein, the pressure sensitive adhesive substance is disposed on the inside surface of the outer portion of the first auxiliary flap, the inside surface of the inner portion of the first auxiliary flap, and the inside surface of the outer portion of the second auxiliary flap, and the inside surface of the inner portion of the second auxiliary flap.
In certain embodiments of the joint support as otherwise described herein, the joint support includes perforations therethrough. For example, joint support 500 includes perforations 572 that extend through facing sheet 550 and first elongate flange 510 and perforations 574 that extend through facing sheet 550 and second elongate flange 520. Perforations 572 and 574 allow a joint compound to extend through the joint support 500, which enhances the connection of the joint support 500 to any building surface panels on which it is secured.
In certain embodiments of the joint support as otherwise described herein, the perforations are positioned in sections of the joint support in which the first auxiliary flap and the second auxiliary flap are not disposed. For example, as shown in
In certain embodiments of the joint support as otherwise described herein, the joint support includes first perforations in sections of the joint support that coincide with the inner portion of the first auxiliary flap and the joint support includes second perforations in sections of the joint support that coincide with the inner portion of the second auxiliary flap. Such a joint support is shown in
In certain embodiments of the joint support as otherwise described herein, the support strip is formed of plastic. For example, the support strip may include at least one of High Density Polyethylene (HDPE), Polyethylene Terephthalate (PET), Acrylonitrile Butadiene Styrene (ABS) copolymer, Acrylonitrile Styrene Acrylate (ASA) copolymer, Polyvinyl Chloride (PVC), PETG, high-impact polystyrene (HIPS), Polycarbonate (PC), Polylactic Acid (PLA), or Polyester. In certain embodiments of the joint support as otherwise described herein, the support strip is reinforced with a fibrous material. For example, in some embodiments, the support strip is reinforced with glass fibers. In other embodiments, the support strip is reinforced with cellulous or other fibers. In other embodiments of the joint support as otherwise described herein, the support strip is formed of metal. For example, in some embodiments, the support strip of the support strip is formed of steel. In other embodiments, the support strip is formed of aluminum or an aluminum alloy.
In certain embodiments of the joint support as otherwise described herein, the joint support is a corner bead. For example, joint support 100, shown in
In certain embodiments of the joint support as otherwise described herein, the length of the joint support is in a range from 4 feet to 20 feet, e.g., from 6 feet to 15 feet, e.g., from 8 feet to 12 feet.
A variety of pressure sensitive adhesives are suitable for use in the joint supports and methods of the disclosure. Pressure sensitive adhesives are typically based on an elastomeric material, often with a tackifier to provide stickiness. In certain embodiments of the joint support as otherwise described herein, the pressure sensitive adhesive substance is based on an acrylic polymer, e.g., based on one or more acrylate or methacrylate monomers such as acrylic acid, isobutyl acrylate, n-propyl acrylate, n-butyl acrylate, ethyl acrylate, isopropyl acrylate, 2-ethylhexyl acrylate, lauryl acrylate, lauryl methacrylate, isodecyl acrylate, isooctyl acrylate, tridecyl methacrylate, tridecyl acrylate, 2-ethylhexyl methacrylate, and caprolactone acrylate. Other suitable systems can include epoxy resins, polyvinyl acetate, ethylene-vinyl acetate copolymer (e.g., with high vinyl acetate content); butyl rubbers, natural rubbers, nitriles, silicone rubbers, polyurethane, styrene-butadiene rubbers, styrene-isoprene rubbers, styrene block copolymers like styrene-butadiene-styrene (SBS), styrene-ethylene/butylene-styrene (SEBS), styrene-ethylene/propylene (SEP), and styrene-isoprene-styrene (SIS). A variety of tackifiers can be used, depending on the elastomer, e.g., resins (e.g. rosins and their derivates, terpenes and modified terpenes, aliphatic, cycloaliphatic and aromatic resins, hydrogenated hydrocarbon resins, and their mixtures, terpene-phenol resins (especially with ethylene-vinyl acetate adhesives)), novolacs, silicone tackifiers based on so-called “MQ” silicate resins (based on monofunctional trimethylsilane reacted with silicon tetrachloride, especially for silicone rubbers). Many other adhesives and adhesive precursors are known in the art with different modes of operation and may be used as the pressure sensitive adhesive substance. The pressure sensitive adhesive substance can be selected to provide compatibility with the other materials and provide a necessary amount of strength to bond with a building surface.
In certain embodiments of the joint support as otherwise described herein, the pressure sensitive adhesive substance includes a temperature-induced phase change material. In certain embodiments, this material serves to structurally or chemically stabilize the pressure sensitive adhesive substance unless the temperature is raised to a certain point, at which the phase change occurs and the stabilization removed. In some embodiments, the phase change material rigidly prevents components of the pressure sensitive adhesive substance from reacting chemically. In some embodiments, the phase change material acts as a solvent upon melting. Examples of such materials include n-docosane, n-eicosane, n-heneicosane, n-heptacosane, n-heptadecane, n-hexacosane, n-hexadecane, n-nonadecane, n-octasane, n-octadecane, n-pentacosane, n-pentadecane, n-tetracosane, n-tetradecane, n-tricosane, and n-tridecane. More generally, any material that undergoes a change in phase within a useful temperature range is desirable and may be included as a component of the pressure sensitive adhesive substance.
In certain embodiments of the joint support as otherwise described herein, the pressure sensitive adhesive substance includes a stabilizing agent. In certain embodiments, stabilizing agents serve to prevent unwanted reactivity during manufacture, storage, or installation of the pressure sensitive adhesive substance. In some embodiments, stabilizing agents also guard against accidental exposure to light, heat, or oxygen that would otherwise serve to degrade the performance of the pressure sensitive adhesive substance. Examples of useful stabilizing agents that are included as a component of the pressure sensitive adhesive substance include certain plastic materials such as 2,2-dimethyloyl-1,3-propanediol and 2-hydroxymethyl-2-methyl-1,3-propandiol and the like.
In another aspect, the disclosure provides a building surface construction including a first building surface panel and a second building surface panel adjacent to the first building surface panel so as to form a seam between the first building surface panel and second building surface panel. A joint support is disposed over the first building surface panel and the second building surface panel and covers at least a portion of the seam. The joint support is secured to the first building surface panel and the second building surface panel by means of a pressure sensitive adhesive substance disposed on the inside surface of the joint support, as described above. The joint support may include any of the features of the joint supports as described above.
Such a building construction is shown in perspective view in
In certain embodiments of the building surface construction as otherwise described herein, the first and second building surface panels are drywall panels. In other embodiments, the building surface panels have other forms, such as cement boards or concrete panels. For example, in some embodiments, each of the building surface panels is a panel that includes a gypsum core surrounded by a facing material, such as a paper facing.
In certain embodiments of the building surface construction as otherwise described herein, the first building surface panel and the second building surface panel are disposed at an angle of about 90°, e.g., in a range from 87° to 93° degrees. In other embodiments of the joint support as otherwise described herein, the first building surface panel and the second building surface panel are disposed at an angle in a range from 30° (e.g., acute) to 180° (e.g., flat), e.g., from 45° to 150°, e.g., from 60° to 120°, e.g., from 80° to 100°.
In certain embodiments of the building surface construction as otherwise described herein, the building surface construction further includes a joint compound coating an outer surface of the facing sheet of the joint support. In some embodiments, the joint compound is spread out over the joint support and extends laterally beyond the edges of the joint support over the surfaces of the first and second building surface panels. The inclusion of such a joint compound coating on the outer surface of the facing sheet provides for a smooth transition between the joint support and the building surface panels.
In certain embodiments of the building surface construction as otherwise described herein, the building surface construction further includes a layer of paint covering the joint compound. The paint obscures the joint support and, in some embodiments, provides a continuous texture over the building surface construction across both the building surface panels and the joint support.
In certain embodiments of the building surface construction as otherwise described herein, the inside surface of the first auxiliary flap covers the outside surface of the first building surface panel and the inside surface of the second auxiliary flap covers the outside surface of second building surface panel. For example, the inside surface of first auxiliary flap 1032 is disposed over the outside surface of first building surface panel 1010 at the edge near second building surface panel 1020. Further, first auxiliary flap 1032 is adhered to the outside surface of first building surface panel 1010 using the pressure sensitive adhesive substance. Likewise, the inside surface of second auxiliary flap 1034 is disposed over the outside surface of second building surface panel 1020 at the edge near first building surface panel 1010. Further, second auxiliary flap 1034 is adhered to the outside surface of second building surface panel 1020 also using the pressure sensitive adhesive substance.
In another aspect, the disclosure provides a method of installing a joint support according to the disclosure above on the building surface construction according to the disclosure above. Such a method is schematically depicted in
In certain embodiments of the method as otherwise described herein, the stimulus is an application of pressure. For example,
In certain embodiments of the method as otherwise described herein, the method further includes coating the outer surface of the paper facing of the joint support with a joint compound. Such a step is schematically depicted in
In certain embodiments of the method as otherwise described herein, the method further includes covering the joint compound with a layer of paint. For example, as shown in
In certain embodiments of the method as otherwise described herein, the joint support is placed over the first and second building surface panels before the stimulus is applied to the joint support.
In certain embodiments of the method as otherwise described herein, the stimulus is initially applied to the inner portion of the first auxiliary flap and the inner portion of the second auxiliary flap and then applied to outer portion of the first auxiliary flap and the outer portion of the second auxiliary flap. This ensures that the joint support fits properly over the building surface and prevents wrinkles and ridges from forming on the joint support upon application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the processes and devices described here without departing from the scope of the disclosure. Thus, it is intended that the present disclosure cover such modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
A joint support comprising:
The joint support according to embodiment 1, wherein the support strip includes a corner connecting the first elongate flange and the second elongate flange.
The joint support according to embodiment 1 or 2 wherein the joint support includes a second auxiliary flap including an inner portion attached to the inside surface of the second elongate flange and an outer portion that extends laterally beyond the outer edge of the second elongate flange, and wherein the pressure sensitive adhesive substance is disposed on at least a portion of an inside surface of the second auxiliary flap.
The joint support according to embodiment 3, wherein the inner portion of the first auxiliary flap and the inner portion of the second auxiliary flap connect at the corner.
The joint support according to embodiment 3, wherein the inner portion of the first auxiliary flap is spaced at least 1 inch from the corner and wherein the inner portion of the second auxiliary flap is spaced at least 1 inch from the corner.
The joint support according to any of embodiments 2 to 4, wherein the corner is a sharp corner that connects the first elongate flange to the second elongate flange and wherein a groove is disposed on an inside surface of the sharp corner.
The joint support according to any of embodiments 2 to 4, wherein the corner is a rounded corner connecting the first elongate flange and the second elongate flange so as to form a bull-nose corner bead.
The joint support according to any of embodiments 2 to 4, wherein the corner is a flexible hinge that connects the first elongate flange to the second elongate flange.
The joint support according to embodiment 7, wherein the flexible hinge is made of a same material as the first elongate flange and the second elongate flange.
The joint support according to embodiment 7 or embodiment 8, wherein the flexible hinge is thinner than the first elongate flange and the second elongate flange.
The joint support of any of embodiments 1 to 9, wherein each of the first elongate flange and the second elongate flange has a thickness in a range from 0.25 mm to 3 mm, e.g., from 0.25 mm to 1 mm, e.g., from 0.5 mm to 0.8 mm.
The join support according to any of embodiments 1 to 10, wherein the first elongate flange tapers so as to decrease in thickness toward the outer edge of the first elongate flange, and wherein the second elongate flange tapers so as to decrease in thickness toward the outer edge of the second elongate flange.
The joint support according to any of embodiments 1 to 11, wherein the first elongate flange and the second elongate flange are disposed at an obtuse angle.
The joint support according to any of embodiments 1 to 11, wherein the first elongate flange and the second elongate flange are disposed at an angle in a range from 80° to 100°, e.g., from 91° to 95°.
The joint support according to any of embodiments 1 to 13, wherein the facing sheet is a paper facing.
The joint support according to any of embodiments 1 to 14, wherein each of the first elongate flange and the second elongate flange has a width in a range from % inch to 5 inches, e.g., from 1 inch to 3 inches, e.g., from 1.5 inches to 2 inches.
The joint support according to any of embodiments 1 to 15, further comprising a first release liner disposed on an inside surface of the first auxiliary flap and a second release liner disposed on an inside surface of the second auxiliary flap.
The joint support according to any of embodiments 1 to 16, wherein the pressure sensitive adhesive substance is configured to transition from having a first adhesive strength to having a second adhesive strength upon application of a stimulus.
The joint support according to embodiment 17, wherein the stimulus is an application of pressure.
The joint support according to embodiment 17 or embodiment 18, wherein the first adhesive strength is weaker than the second adhesive strength.
The joint support according to any of embodiments 17 to 19, wherein the first adhesive strength is configured to form a releasable adhesive bond between the joint support and a building surface.
The joint support according to any of embodiments 17 to 20, wherein the second adhesive strength is configured to form a permanent adhesive bond between the joint support and a building surface.
The joint support according to any of embodiments 1 to 21, wherein the first auxiliary flap and the second auxiliary flap are formed of paper.
The joint support according to any of embodiments 1 to 22, wherein the pressure sensitive adhesive substance is disposed on an inside surface of the outer portion of the first auxiliary flap.
The joint support according to any of embodiments 1 to 23, further comprising:
first perforations in sections of the joint support that coincide with the inner portion of the first auxiliary flap, and second perforations in sections of the joint support that coincide with the inner portion of the second auxiliary flap.
The joint support according to any of embodiments 1 to 24, wherein the support strip is formed of plastic.
The joint support according to embodiment 25, wherein the support strip includes at least one of High Density Polyethylene (HDPE), Polyethylene Terephthalate (PET), Acrylonitrile Butadiene Styrene (ABS) copolymer, Acrylonitrile Styrene Acrylate (ASA) copolymer, Polyvinyl Chloride (PVC), PETG, high-impact polystyrene (HIPS), Polycarbonate (PC), Polylactic Acid (PLA), or Polyester.
The joint support according to any of embodiments 1 to 26, wherein the joint support is a corner bead.
The joint support according to any of embodiments 1 to 27, wherein the length is in a range from 4 feet to 20 feet, e.g., from 6 feet to 15 feet, e.g., from 8 feet to 12 feet.
The joint support according to any of embodiments 1 to 28, wherein the pressure sensitive adhesive substance includes at least one polymer selected from acrylic polymers, e.g., based on one or more acrylate or methacrylate monomers such as acrylic acid, isobutyl acrylate, n-propyl acrylate, n-butyl acrylate, ethyl acrylate, isopropyl acrylate, 2-ethylhexyl acrylate, lauryl acrylate, lauryl methacrylate, isodecyl acrylate, isooctyl acrylate, tridecyl methacrylate, tridecyl acrylate, 2-ethylhexyl methacrylate, and caprolactone acrylate, epoxy resins, polyvinyl acetate, ethylene-vinyl acetate copolymers (e.g., with high vinyl acetate content); butyl rubbers, natural rubbers, nitriles, silicone rubbers, polyurethane, styrene-butadiene rubbers, styrene-isoprene rubbers, and styrene block copolymers like styrene-butadiene-styrene (SBS), styrene-ethylene/butylene-styrene (SEBS), styrene-ethylene/propylene (SEP), and styrene-isoprene-styrene (SIS).
The joint support according to any of embodiments 1 to 29, wherein the joint support is a rolled product.
A building surface construction using the joint support of any of embodiments 1 to 30, the building surface construction comprising:
The building surface construction according to embodiment 31, wherein the first and second building surface panels are drywall panels.
The building surface construction according to embodiment 31 or 32, wherein the first building surface panel and the second building surface panel are disposed at an angle of about 90°.
The building surface construction of any of embodiments 31 to 33, further comprising a joint compound coating an outer surface of the facing sheet of the joint support.
The building surface construction according to embodiment 34, further comprising a layer of paint covering the joint compound.
The building surface construction according to any of embodiments 31 to 35, wherein the inside surface of first auxiliary flap is disposed over an outside surface of first building surface panel and the inside surface of second auxiliary flap covers an outside surface of second building surface panel.
A method of installing the joint support according to any of embodiments 1 to 30 so as to form the building surface according to any of embodiments 31 to 36, the method comprising:
The method according to embodiment 37, wherein the stimulus is an application of pressure.
The method according to embodiment 37 or embodiment 38, further comprising coating the outer surface of the facing sheet of the joint support with a joint compound.
The method according to any of embodiments 37 to 39, further comprising covering the joint compound with a layer of paint.
The method according to any of embodiments 37 to 40, wherein the joint support is placed over the first and second building surface panels before the stimulus is applied to the joint support.
The method according to any of embodiments 37 to 41, wherein the stimulus is initially applied to the inner portion of the first auxiliary flap and the inner portion of the second auxiliary flap and then applied to outer portion of the first auxiliary flap and the outer portion of the second auxiliary flap.
This application claims the benefit of priority of U.S. Provisional Patent Application No. 62/933,028, filed Nov. 8, 2019, which is hereby incorporated herein by reference in its entirety.
| Number | Date | Country | |
|---|---|---|---|
| 62933028 | Nov 2019 | US |
