In certain embodiments of the joint support as otherwise described herein, the stimulus is the application of ultrasonic energy. In some embodiments, ultrasonic energy serves to rupture the capsules directly as they absorb the ultrasonic energy. In other embodiments, ultrasonic energy induces cavitation and local heating which leads to capsule rupturing. In certain embodiments, the adhesive substance is formulated to efficiently absorb ultrasonic energy, leading to rapid heating. The increase in temperature may have a variety of effects, including increasing reaction speed and decreasing capsule integrity.

In certain embodiments of the joint support as otherwise described herein, a combination of stimuli is utilized. For example, the simultaneous application of pressure and radiation, or heat and radiation, or pressure and solvent is utilized to rupture the capsules.

In certain embodiments of the joint support as otherwise described herein, the intensity of the stimulus is adjusted as needed based upon the precise formulation to allow complete capsule rupture. In other embodiments, the intensity is lowered to provide for only partial capsule rupture. In still other embodiments, the stimulus is selectively applied briefly to the adhesive substance or to only a portion of the adhesive substance in order to rupture a subset of the capsules. This approach allows selection of the quantity of adhesion and, in certain embodiments, allows future re-adhesion by the application of additional stimulus.

In certain embodiments of the joint support as otherwise described herein, the capsules release the first component by melting. For example, application of heat raises the temperature of the capsule membrane above the melting transition temperature of the membrane material. In certain embodiments, this causes the membrane to lose structural integrity and allow release of the first component. In other embodiments, melting is induced by a chemical that alters the membrane to have a lower melting temperature, or by a local temperature increase from a source other than conventional heating.

In certain embodiments of the joint support as otherwise described herein, the capsules release the first component by dissolving. In certain embodiments, the membrane is brought into contact with an appropriate solvent or other chemical that effectively dissolves the membrane and results in the first component being released. In some embodiments, this is due to the application of a solvent as a stimulus. In other embodiments, the release of a solvent is from another part of the adhesive substance. For example, in some embodiments the application of heat raises an endogenous chemical above its melting temperature, resulting in a liquid solvent that then serves to dissolve the membrane and cause the capsule to release the first component.

In certain embodiments of the joint support as otherwise described herein, the first component of the adhesive composition includes a monomer, oligomer or polymer based on at least one of alkyl acrylate, acrylic acid-alkyl acrylate, methacrylate, epoxy resins, polyvinyl acetate, isocyanate, urethane (e.g., urethane (meth)acrylate), and styrene-butadiene resin. In certain embodiments, one or more of these act as unpolymerized monomers, polymer precursors, or adhesive precursors, e.g., that can cure to polymeric form when the joint support is applied to a joint. In certain embodiments, the adhesive and adhesive precursors are selected to provide compatibility with the other materials and provide a necessary amount of strength once cured. Many other adhesives and adhesive precursors are known in the art with different modes of operation and may be used as the first component of the adhesive composition.

Further examples of suitable alkyl acrylates include 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, or caprolatone acrylate. A large number of related acrylates are known in the art and can be appropriately selected by one of ordinary skill to meet the precise properties desired as the first component of the adhesive composition.

In certain embodiments of the joint support as otherwise described herein, the first component of the adhesive composition includes a curing agent. Curing agents serve to harden, toughen, or otherwise modify polymers. For example, some curing agents serve to cross-link adjacent polymer chains. In other embodiments, curing agents are activated by external stimuli including heat, light, or solvent. In certain embodiments, curing agents are regenerated during the curing reaction and function as a catalyst. In other embodiments, the curing agent is incorporated into the polymer structure. Examples of useful curing agents are boron trifluoride complexes, nitrile or aniline type catalysts, acid chloride, hexamethylenetetramine, various oxides, e.g., metal oxides, tin compounds, e.g., dibutyltin dilaurate, and the like. In certain embodiments, the curing agent takes the form of a catalyst. Catalysts are well known in the art and serve to accelerate the desired chemical reaction. In certain embodiments, the catalyst imparts desired characteristics upon the reaction product, for instance by favoring one product over another. Examples of types of catalysts that may be included in the first component of the adhesive composition include acids, inorganic complexes and materials, and organic molecules. The classes of initiators and curing agents as described herein often overlap with catalysts and a single substance may belong to multiple categories. Many polymerization catalysts are known in the art and may be selected for use by one of ordinary skill to be included in the first component of the adhesive composition.

In certain embodiments of the joint support as otherwise described herein, the first component of the adhesive composition includes an initiator. In certain embodiments, initiators serve to begin polymerization reactions. In some embodiments the initiator is a thermal polymerization initiator. A thermal polymerization initiator serves to generate reactive species such as free radicals or acidic species upon exposure to heat. Examples of thermal polymerization initiators include azo compounds such as 2,2′-azobis(isobutyronitrile), organic peroxides such as benzoyl peroxides, benzenesulfonic acid esters, and alkylsulfonium salts. In other embodiments the initiator is a photoinitiator, whereby the photoinitiator absorbs radiation and generates reactive species such as free radicals, cations, or anions that initiate polymerization. A wide variety of photoinitiators are known in the art. Examples that may be included in the first component of the adhesive composition include phenone-based radical photoinitiators, sulfonium- and iodonium-based cationic photoinitiators, and oxime-, carbamate-, or oxoxanthen-based anionic photo initiators.

In certain embodiments of the joint support as otherwise described herein, the first component of the adhesive composition includes a solvent. In certain embodiments, the solvent serves to dissolve at least one component of the adhesive composition, either before or after activation of the adhesive substance. In some embodiments, the dissolved at least one component imparts favorable characteristics upon the adhesive composition. The exact identity of the solvent is selected from a wide variety of factors including relative solubility of the reactive species, the solubility of the product, the interaction of the solvent with other components of the adhesive substance, the vapor pressure, and toxicity, among other factors. Solvents which may be included in the first component of the adhesive composition can be pure substances but are often mixtures of substances as well. Examples of useful solvents which may be included in the first component of the adhesive composition include water, petroleum oils, vegetable oils, vegetable oil esters, liquid hydrocarbon resins, liquid plasticizers, organic solvents and blends thereof.

In certain embodiments of the joint support as otherwise described herein, the first component of the adhesive composition the adhesive composition includes a temperature-induced phase change material. In certain embodiments, this material serves to structurally or chemically stabilize the adhesive composition 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 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 in the first component of the adhesive composition.

In certain embodiments of the joint support as otherwise described herein, the first component of the adhesive composition includes a stabilizing agent. In certain embodiments, stabilizing agents serve to prevent unwanted reactivity during manufacture, storage, or installation of the 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 adhesive substance. Examples of useful stabilizing agents that may be included in the first component of the adhesive composition include certain plastic materials such as 2,2-dimethyloyl-1,3-propanediol and 2-hydroxymethyl-2-methyl-1,3-propandiol and the like.

In certain embodiments of the joint support as otherwise described herein, the membrane of each of the first set of capsules includes at least one of gelatin, gelatin-gum Arabic, melamine formaldehyde, methylol urea, urea formaldehyde, urea-resorcinol-formaldehyde, urea-melamine-formaldehyde, methylol melamine, methylated dimethyl urea, a gelatin anionic polymer, polyamide, and alkyl acrylate-acrylic acid copolymer. In some embodiments the membrane material is chosen to be compatible with synthesis methods, compatibility with the component that the capsule is to contain, and ability to maintain integrity until the application of the stimulus. In some embodiments, materials used in the field of coacervation, waxes, polymers, and combinations thereof are particularly useful. In some embodiments, the membrane material of the first set of capsules is the same as the membrane material of the second set of capsules. In other embodiments, the membrane material of the first and second set of capsules is different. For example, the use of different membrane materials allows the rupture of the first set of capsules with the application of a certain stimulus that does not result in the rupturing of the second set of capsules. A second stimulus may then be applied to rupture the second set. In other embodiments, the sets of capsules rupture due to the same stimulus but under different intensity of the stimulus, leading one set to rupture before the other set. Various scenarios can be constructed to aid the formulation of an adhesive substance that fulfills the particular needs of a support strip and can be chosen by one of ordinary skill in the art.

In certain embodiments of the joint support as otherwise described herein, the capsules have an average diameter between 0.1 microns and 3000 microns, e.g., 1 micron and 500 microns, e.g., 5 microns and 100 microns. In certain embodiments, the size of the capsules depends on the manner of preparation, the other components of the adhesive substance, and the desired structural and chemical characteristics of the capsules.

In certain embodiments of the joint support as otherwise described herein, the contact surface of the support strip is textured. For example, in some embodiments, the contact surface includes a plurality of protruding structures in the form of ridges, posts, whiskers or undulations that extend outward from the surface. In some embodiments, the first set of capsules is disposed between the protruding structures. Accordingly, in some embodiments, prior to installation of the joint support, the protruding structures can help protect the capsules from inadvertent release of the first component of the adhesive composition. Further, in some embodiments, the protruding structures can serve as mixing elements to help mix or spread components of the adhesive composition, for example when the structures are briefly pushed back and forth against an opposing surface.

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 FIGS. 1 and 2, is a corner bead that is configured to cover a joint between two panels that meet at a corner of a building surface.

In certain embodiments of the joint support as otherwise described herein, the support strip has a body that includes a first elongate flange extending from the first end of the support strip to the second end of the support strip, and a second elongate flange extending from the first end of the support strip to the second end of the support strip. For example, as shown in FIG. 1, support strip 110 of joint support 100 includes a body 130 having a first elongate flange 132 that extends from first end 116 to second end 118 and a second elongate flange 134 that also extends from first end 116 to second end 118. At least a portion of the first elongate flange 132 is configured to cover an edge of a first building surface panel and, likewise at least a portion of the second elongate flange 134 is configured to cover an edge of a second building surface panel. Accordingly, the support strip 110 may cover both edges of a joint between the two building surface panels.

In certain embodiments of the joint support as otherwise described herein, the body includes a sharp corner connecting the first elongate flange and the second elongate flange. For example, body 130 of joint support 100 includes a sharp corner 136 that connects first elongate flange 132 to second elongate flange 134. The sharp corner 136 provides a clean sharp corner edge where the joint support 100 covers the seam between the building surface panels. Another embodiment of a joint support including such a sharp corner is shown in FIG. 7. Joint support 700 includes a body 730 with a first flange 732 and a second flange 734 that are connected by a sharp corner 736.

In certain embodiments of the joint support as otherwise described herein, the body includes a groove disposed on an inside surface of the sharp corner connecting the first elongate flange and the second elongate flange. For example, the body 730 of joint support 700 includes a groove 738 disposed on the inside surface of sharp corner 736. Groove 738 allows the first elongate flange 732 and the second elongate flange 734 to flex with respect to one another as the corner bead is placed over the corner formed by the adjacent building surface panels. This allows the joint support 700 to be operable with a range of angles between two building surface panels.

In certain embodiments of the joint support as otherwise described herein, the body includes 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 FIG. 8. Joint support 800 has a body 830 that includes a first elongate flange 832 and a second elongate flange 834. Further, the first and second elongate flanges 832, 834 are connected to one another by a rounded corner 837, such that joint support 800 is constructed as a corner bead with a bull nose configuration. The rounded corner 837 of joint support 800 allows a uniform round edge to be provided at the seam between two building surface panels that are disposed at an angle to one another.

In certain embodiments of the joint support as otherwise described herein, the first elongate flange and second elongate flange are is disposed at an angle in a range from 45° to 160° from one another, e.g., from 60° to 120°, e.g., from 80° to 90°. For example, in joint support 100, first elongate flange 132 is disposed at an angle of slightly less than 90° from second elongate flange 134. Accordingly, the joint support 100 will impose a slight gripping force on two building surface panels that are disposed at a right angle from one another.

In certain embodiments of the joint support as otherwise described herein, the first elongate flange includes perforations therethrough. For example, first elongate flange 732 in joint support 700 includes perforations 742 that extend from the inner contact surface 720 to the outer surface 722. Likewise, second elongate flange 734 also includes perforations 744 extending therethrough. The perforations 742, 744 allow a joint compound to extend through the joint support 700, which enhances the connection of the joint support 700 to any building surface panels on which it is secured.

In certain embodiments of the joint support as otherwise described herein, the first elongate flange tapers so as to have a greater thickness adjacent to the second elongate flange and a smaller thickness at an outer edge. For example, first elongate flange 732 of joint support 700 is thicker at corner 736, where it is adjacent to second elongate flange 734, and tapers toward an outer edge where it is thinner. Likewise, second elongate flange 734 is also thicker at corner 736 and tapers toward an outer edge.

In certain embodiments of the joint support as otherwise described herein, the support strip includes a facing sheet disposed at the outer surface. Such a joint support is shown in FIG. 9. Joint support 900 includes a body 910 having a first elongate flange 932 and a second elongate flange 934. A facing sheet 944 is attached to the outside surface of body 910 at the outer surface 922 of joint support 900. 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. In some embodiments, the facing sheet is a paper facing. In other embodiments the facing sheet is a fiber mat. Other materials may also be used for the facing sheet, 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 elongate flange is connected to the second elongate flange by a flexible hinge. Such a joint support is shown in FIG. 10. Joint support 1000 includes a body 1030 having a first elongate flange 1032 and a second elongate flange 1034. The first and second elongate flanges 1032, 1034 are connected to one another by a flexible hinge 1035 formed by a facing sheet 1044. The flexible hinge 1035 allows the joint support 1000 to fit over a seam between building surface panels disposed at any angle to one another, including parallel panels. Furthermore, the use of flexible hinge 1035 also permits the joint support 1000 to be formed in a roll for convenient storage and transport.

In certain embodiments of the joint support as otherwise described herein, the body is formed of plastic. For example, in some embodiments, the body includes at least one of High Density Polyethylene (HDPE), Polyethylene Terephthalate (PET), or Acrylonitrile Butadiene Styrene (ABS).

In certain embodiments of the joint support as otherwise described herein, the body is reinforced with a fibrous material. For example, in some embodiments, the body is reinforced with glass fibers. In other embodiments the body is reinforced with cellulous or other fibers.

In certain embodiments of the joint support as otherwise described herein, the body is formed of metal. For example, in some embodiments the body of the support strip is formed of steel. In other embodiments, the body is formed of aluminum or an aluminum alloy.

In certain embodiments of the joint support as otherwise described herein, a width of the first elongate flange is in a range from % inch to 5 inches, e.g., 1 inch to 3 inches, e.g., from 1.5 inches to 2 inches. Further, in some embodiments, a 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.

In another aspect the disclosure provides a method of installing a joint support according to the disclosure on a joint between two building surface panels. The method includes placing the joint support over a first building surface panel and a second building surface panel so as to cover a portion of a seam between the first and second building surface panels and with the contact surface of the joint support adjacent to a surface of the building surface panels. The method further includes applying a stimulus to the joint support in order to release the first component of the adhesive composition from the capsules of the first set of capsules. As a result, the adhesive composition attaches the joint support to the two panels.

Such a method is schematically depicted in FIGS. 11 and 12. As shown in FIG. 11, joint support 1100 is placed over an edge of a first building panel 1182 and an edge of a second building panel 1184 so as to cover a portion of a seam 1180 between the two building surface panels. In the depicted embodiment, joint support 1100 is positioned at a distance from the upper edges of first building panel 1182 and second building panel 1184. However, in other embodiments, the joint support extends to the edge of the panels and the portion of the seam that is covered is the entire seam. As depicted in FIG. 12 a stimulus is then applied to joint support 1100 in order to release the first component of the adhesive composition from the first set of capsules so as to attach joint support 1100 to first building panel 1182 and second building panel 1184.

In certain embodiments of the method as otherwise described herein, the stimulus is pressure applied to the joint support against the building surface panels causing the capsules to burst. For example, FIG. 12 schematically depicts joint support 1100 being pressed against the corner formed by first building surface panel 1182 and second building surface panel 1184 so as to release the first component of the adhesive composition from the capsules. As set forth above, in some embodiments, the pressure is applied directly by a builder, for example by hand or with a rolling a tool, while in other embodiments, the pressure required to burst the capsules is applied by a specialized tool or is applied by a machine.

In other embodiments the stimulus is heat applied to the joint and causes at least a portion of the membranes of the capsules to melt. In other embodiments, the stimulus is radiation applied to the joint causing at least a portion of the capsules to rupture. Further, in some embodiments, the stimulus is a solvent introduced to the capsules, which causes at least a portion of the membranes of the capsules to dissolved. Still, in other embodiments, the stimulus is ultrasonic energy that causes the capsules to rupture.

In some embodiments, the stimulus is applied after the joint support is positioned over the first and second building surface panels. In other embodiments the stimulus is applied before the joint support is positioned over the surface panels. For example, in one embodiment using heat as the stimulus, the stimulus is applied before the joint support is positioned over the first and second building surface panels. In other embodiments, the application of radiation, solvent, or ultrasonic energy is applied before the joint support is positioned over the building surface panels.

In certain embodiments of the method as otherwise described herein, the building surface panels are drywall 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 other embodiments, the building surface panels have other forms, such as cement boards or concrete panels.

In certain embodiments of the method as otherwise described herein, the released first component mixes with a second component so as to form the adhesive composition. Examples of such cooperative components are explained in further detail above. In some embodiments, the stimulus releases the second component from the capsules of a second set of capsules. In other embodiments, a first stimulus releases the first component from the first set of capsules while a second stimulus release the second component from the second set of capsules. As will be appreciated by those of skill in the art, any combination of the previously-described stimuli are possible.

In certain embodiments of the method as otherwise described herein, the first building surface panel is disposed at an angle to the second building surface panel, and the joint support is a corner bead. For example, as shown in FIGS. 11 and 12, first building surface panel 1182 is disposed at a right angle to second building surface panel 1184, and joint support 1100 is a corner bead that covers the corner seam 1180 between the building surface panels.

In certain embodiments of the method as otherwise described herein, the method further includes coating the outer surface of the joint support with a joint compound. Such a step is schematically depicted in FIG. 13, where a coating of joint compound 1186 is provided over a portion of joint support 1100 and second building surface panel 1184.

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 FIG. 14, in a further step, joint support 1100 is covered by a layer of paint 1188. The painted joint forms a clean and sharp corner over the seam of the building surface panels.

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 a portion of the seam. The joint support includes a support strip having a width, a length, a first end, a second end, a contact surface facing the first building surface panel and the second building surface panel, and an outer surface. An adhesive composition secures the joint support to the first building surface panel and the second building surface panel, and fragments of membranes of ruptured capsuled are disposed in the adhesive composition.

The support strip may include any of the features of the support strip of the joint support of the disclosure, as described above. Likewise, the adhesive composition may include any of the features of the adhesive composition formed from the adhesive components of the joint support of the disclosure, as also described above.

In certain embodiments of the building surface construction as otherwise described herein, the building surface panels are drywall panels. In other embodiments, the building surface panels have other forms, such as cement boards or concrete panels.

In certain embodiments of the building surface construction as otherwise described herein, the fragments of membranes include at least one of gelatin, gelatin-gum Arabic, melamine formaldehyde, methylol urea, urea formaldehyde, urea-resorcinol-formaldehyde, urea-melamine-formaldehyde, methylol melamine, methylated dimethyl urea, a gelatin anionic polymer, polyamide, and alkyl acrylate-acrylic acid copolymer. In some embodiments, the fragments of membranes remain in the adhesive composition after the capsules are ruptured and the adhesive composition sets. Thus, the ruptured bodies or portions of the membrane of the capsules remain embedded within the adhesive composition that secures the joint support to the building surface products.

Additional aspects of the invention are described by the following enumerated embodiments, which can be combined in any number and in any fashion that is not logically or technically inconsistent.

Embodiment 1. A joint support comprising:

- a support strip including a width, a length, a first end, a second end, a contact surface and an outer surface; and
- an adhesive substance disposed on the contact surface of the support strip, the adhesive substance including:
  - a first set of capsules, each capsule of the first set of capsules including an outer membrane enclosing a first component of an adhesive composition.
    
    Embodiment 2. The joint support according to embodiment 1, wherein the adhesive substance includes a second component of the adhesive composition.
    
    Embodiment 3. The joint support according to embodiment 2, wherein the second component is disposed outside of the capsules.
    
    Embodiment 4. The joint support according to embodiment 3, wherein the first set of capsules is embedded in the second component.
    
    Embodiment 5. The joint support according to embodiment 2, wherein the adhesive substance includes a second set of capsules, and wherein the second component is disposed in the capsules of the second set of capsules.
    
    Embodiment 6. The joint support according to any of embodiments 1 to 5, wherein the capsules of the first set of capsules are configured to release the first component upon the application of a stimulus.
    
    Embodiment 7. The joint support according to embodiment 6, wherein the stimulus is the application of pressure.
    
    Embodiment 8. The joint support according to embodiment 6, wherein the stimulus is the application of heat.
    
    Embodiment 9. The joint support according to embodiment 6, wherein the stimulus is radiation.
    
    Embodiment 10. The joint support according to embodiment 6, wherein the stimulus is the addition of a solvent.
    
    Embodiment 11. The joint support according to embodiment 6, wherein the stimulus is the application of ultrasonic energy.
    
    Embodiment 12. The joint support according to any of embodiments 1 to 11, wherein the capsules release the first component by rupturing.
    
    Embodiment 13. The joint support according to embodiment 6 or embodiment 10, wherein the capsules release the first component by dissolving.
    
    Embodiment 14. The joint support according to embodiment 8 or embodiment 9 wherein the capsules release the first component by melting.
    
    Embodiment 15. The joint support according to any of embodiments 1 to 14, wherein the first component of the adhesive composition includes at least one of alkyl acrylate, acrylic acid-alkyl acrylate, methacrylate, epoxy resins, polyvinyl acetate, isocyanate, urethane, and styrene butadiene.
    
    Embodiment 16. The joint support according to any of embodiments 1 to 15, wherein the first component of the adhesive composition includes a curing agent.
    
    Embodiment 17. The joint support according to any of embodiments 1 to 16, wherein the first component of the adhesive composition includes an initiator.
    
    Embodiment 18. The joint support according to any of embodiments 1 to 17, wherein the first component of the adhesive composition includes a solvent.
    
    Embodiment 19. The joint support according to any of embodiments 1 to 18, wherein the first component of the adhesive composition includes a temperature-induced phase change material.
    
    Embodiment 20. The joint support according to any of embodiments 1 to 19, wherein the first component of the adhesive composition includes a stabilizing agent.
    
    Embodiment 21. The joint support according to any of embodiments 1 to 20, wherein the membrane of each capsule of the first set of capsules includes at least one of gelatin, gelatin-gum Arabic, melamine formaldehyde, methylol urea, urea formaldehyde, urea-resorcinol-formaldehyde, urea-melamine-formaldehyde, methylol melamine, methylated dimethyl urea, a gelatin anionic polymer, polyamide, and alkyl acrylate-acrylic acid copolymer.
    
    Embodiment 22. The joint support according to any of embodiments 5 to 21, wherein the membrane of each capsule of the second set of capsules includes at least one of gelatin, gelatin-gum Arabic, melamine formaldehyde, methylol urea, urea formaldehyde, urea-resorcinol-formaldehyde, urea-melamine-formaldehyde, methylol melamine, methylated dimethyl urea, a gelatin anionic polymer, polyamide, or alkyl acrylate-acrylic acid copolymer.
    
    Embodiment 23. The joint support according to any of embodiments 1 to 22, wherein the capsules have an average diameter in a range from 0.1 microns to 3000 microns, e.g., from 1 micron to 500 microns, e.g., from 5 microns to 100 microns.
    
    Embodiment 24. The joint support according to any of embodiments 1 to 23, wherein the contact surface of the support strip is textured.
    
    Embodiment 25. The joint support according to any of embodiments 1 to 24, wherein the joint support is a corner bead.
    
    Embodiment 26. The joint support according to embodiment 25, wherein the support strip includes a body comprising:
- a first elongate flange extending from the first end to the second end, and
- a second elongate flange extending from the first end to the second end.
  
  Embodiment 27. The joint support according to embodiment 26, wherein the body includes a sharp corner connecting the first elongate flange and the second elongate flange.
  
  Embodiment 28. The joint support according to embodiment 27, wherein the body includes a groove disposed on an inside surface of the sharp corner connecting the first elongate flange and the second elongate flange.
  
  Embodiment 29. The joint support according to embodiment 26, wherein the body includes a rounded corner connecting the first elongate flange and the second elongate flange so as to form a bull-nose corner bead.
  
  Embodiment 30. The joint support according to any of embodiments 27 to 29, wherein the first elongate flange and second elongate flange are disposed at an angle in a range from 45° to 160° from one another, e.g., from 60° to 120°, e.g., from 80° to 90°.
  
  Embodiment 31. The joint support according to any of embodiments 26 to 30, wherein the first elongate flange includes perforations therethrough.
  
  Embodiment 32. The joint support according to any of embodiments 26 to 31, wherein the first elongate flange tapers so as to have a greater thickness adjacent to the second elongate flange and a smaller thickness at an outer edge.
  
  Embodiment 33. The joint support according to any of embodiments 1 to 32, wherein the support strip includes a facing sheet disposed at the outer surface.
  
  Embodiment 34. The joint support according to any of embodiments 26 to 33, wherein the first elongate flange is connected to the second elongate flange by a flexible hinge.
  
  Embodiment 35. The joint support according to any of embodiments 26 to 34, wherein the body is formed of plastic.
  
  Embodiment 36. The joint support according to embodiment 35, wherein the body includes at least one of High Density Polyethylene (HDPE), Polyethylene Terephthalate (PET), or Acrylonitrile Butadiene Styrene (ABS).
  
  Embodiment 37. The joint support according to embodiment 34 or embodiment 35, wherein the body is reinforced with a fibrous material, e.g., glass fibers or cellulous fibers.
  
  Embodiment 38. The joint support according to any of embodiments 26 to 34, wherein the body is formed of metal.
  
  Embodiment 39. The joint support according to any of embodiments 26 to 38, wherein a width of the first elongate flange is in a range from % inch to 5 inches, e.g., 1 inch to 3 inches, e.g., from 1.5 inches to 2 inches.
  
  Embodiment 40. The joint support according to any of embodiments 1 to 39, wherein a 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.
  
  Embodiment 41. A method of installing the joint support according to any of embodiments 1 to 40 on a joint between two building surface panels, the method comprising:
- placing the joint support over a first building surface panel and a second building surface panel so as to cover a portion of a seam between the first and second building surface panels and with the contact surface of the joint support adjacent to a surface of the building surface panels;
- applying a stimulus to the joint support in order to release the first component of the adhesive composition from the capsules of the first set of capsules, wherein the adhesive composition attaches the joint support to the two building surface panels.
  
  Embodiment 42. The method according to embodiment 41, wherein the stimulus is pressure applied to the joint support against the building surface panels causing the capsules to burst.
  
  Embodiment 43. The method according to embodiment 41, wherein the stimulus is heat applied to the joint causing at least a portion of the membranes of the capsules to melt.
  
  Embodiment 44. The method according to embodiment 41, wherein the stimulus is radiation applied to the joint causing at least a portion of the capsules to rupture.
  
  Embodiment 45. The method according to embodiment 41, wherein the stimulus is a solvent introduced to the capsules and causing at least a portion of the membranes of the capsules to dissolve.
  
  Embodiment 46. The method according to embodiment 41, wherein the stimulus is ultrasonic energy causing the capsules to rupture.
  
  Embodiment 47. The method according to any of embodiments 42 to 46, wherein the joint support is placed over the first building surface panel and the second building surface panel before the stimulus is applied to the joint support.