JOINT STRIP FOR REINFORCEMENT OF DRYWALL PANEL JOINTS

Abstract

A joint strip for reinforcement of drywall panel joints as well as for a method for reinforcing panel joints i.e. around a corner of a window or door opening is disclosed.

Claims

1. A joint strip for reinforcement of drywall panel joints, comprising: a strip portion with an inside corner comprising at least a first edge portion and a second edge portion arranged at an angle; the strip portion being shaped to extend from the first edge portion and the second edge portion.

2. The joint strip according to claim 1, wherein the first edge portion and the second edge portion are arranged at a right angle.

3. The joint strip according to claim 1, wherein the strip portion is shaped to extend from the inside corner in a range of from 40 mm to 150 mm.

4. The joint strip according to claim 1, wherein the first edge portion and the second edge portion have differing lengths.

5. The joint strip according to claim 4, wherein the length ratio of the first edge portion and the second edge portion is at least 2:1.

6. The joint strip according to claim 1, wherein the inside corner comprises a third edge portion arranged with an angle 115<<155 to the first edge portion and arranged between the first edge portion and the second edge portion.

7. The joint strip according to claim 6, wherein the third edge portion is arranged at =135 to the first edge portion.

8. The joint strip according to claim 7, wherein the length of the third edge portion is such that the lateral distance d of the first edge portion from the centre of the third edge portion is between 3 cm and 4 cm.

9. The joint strip according to claim 6, wherein the length of the third edge portion is at least 8 cm.

10. The joint strip according to claim 1, comprising an outside corner formed to correspond the inside corner, and the outside corner being arranged diametrically to the inside corner.

11. The joint strip according to claim 1, wherein the strip portion is made of a natural fibre material, an inorganic fibre material or a synthetic fibre material or combinations thereof.

12. A method for reinforcing panel joints around a corner of a window or door opening comprising the steps: applying a first layer of joint filler material at the joints formed by abutting panels; applying a joint strip with an inside corner at a corner formed by the window or door opening to cover the joints of the abutting panels; and applying at least one further layer of joint filler material at the joint strip.

13. The method according to claim 12, wherein the step of applying the joint strip comprises to arrange the joint strip with a strip portion in a direction corresponding to the bisecting line of the corner of the window or door opening.

14. The method according to claim 12, wherein only one joint strip is arranged in one corner of the window or door opening.

15. The method according to claim 12, wherein the joint strip is arranged with a third edge portion to form a tangent line at the corner of the window or door opening.

Description

[0031] In the following, the invention is illustrated in more detail by means of the examples shown in the attached drawings, in which:

[0032] FIG. 1 is an illustration of a window or door opening with a first variant of the joint strip according to the invention;

[0033] FIG. 2 is an illustration of a window or door opening with a second variant of the joint strip according to the invention; and

[0034] FIG. 3 is an illustration of a window or door opening with a second variant of the joint strip according to the invention.

[0035] In FIG. 1 the joint strip 1 is shown when arranged at an exemplified window or door opening 10 in a drywall construction for reinforcement of drywall panel joints 11.

[0036] The joint strip 1 has a strip portion 2 with an inside corner 3 formed by a first edge portion 4 adjoining a second edge portion 5. In the shown example, the first edge portion 4 and the second edge portion 5 are arranged at an right angle of =90 which corresponds to the angle of the window or door opening 10 in the drywall construction.

[0037] Due to that the inside corner 3 can be arranged to cover adjoining edges of a corner of a window or door opening 10 in a drywall construction, the occurrence of joint humps can be prevented. The shape of the strip portion 2 of the joint strip 1, which extends from the first edge portion 4 and the second edge portion 5 allows that multiple joint strips are not needed so that unwanted overlapping sections are prevented. A smooth finished drywall surface free of elevations due to the overlapping sections of the joint strips in these areas is achieved.

[0038] The strip portion 2 is shaped to extend from the first edge portion 4 and the second edge portion 5 to allow for covering the joints 11 arranged at the corner of a window and door opening 10 of a drywall construction where many drywall panel joints 11 occur in particular small areas.

[0039] Advantageously, the strip portion 2 is shaped to extend vertically and horizontally from the inside corner 3 in a range of from 40 mm to 150 mm. That range allows to cover joints 11 which typically occur in the vicinity at the corner of a window and door opening of a drywall construction, e.g. a shutter housing.

[0040] Not limited to the illustrated example, the joint strip 1 comprises an outside corner 7 formed to correspond the inside corner 3. The outside corner 7 is arranged diametrically to the inside corner 3.

[0041] The strip portion 2 is made of a natural fibre material, an inorganic fibre material or a synthetic fibre material of combinations thereof.

[0042] The joint strip 1 is applied in the same manner for all variants of the invention by a method for reinforcing panel joints 11 around a corner of a window or door opening 10 comprising the steps: [0043] applying a first layer of joint filler material (not shown) at the joints 11 formed by abutting panels; [0044] applying a joint strip 1 with an inside corner 3 at a corner formed by the window or door opening 10 to cover the joints 11 of the abutting panels; [0045] applying at least one further layer of joint filler material (not shown) at the joint strip 1.

[0046] The step of applying the joint strip 1 comprises to arrange the joint strip 1 with a strip portion 2 in a direction corresponding to the bisecting line of the corner of the window or door opening 10.

[0047] Advantageously, only one joint strip 1 is arranged in one corner of the window or door opening 10.

[0048] A second variant of the joint strip 1 according to the invention is shown in FIG. 2 wherein the first edge portion 4 and the second edge portion 5 have differing lengths. As can be seen in the drawing, the differing length allows to covering the joints 11 at one (right) side of the corner of a window and door opening 10 in a larger area compared to the other (left) side.

[0049] The length ratio of the first edge portion 4 and the second edge portion 5 is preferably at least 2:1.

[0050] A third variant of the joint strip 1 according to the invention is shown in FIG. 3 wherein the inside corner 3 has a third edge portion 6 arranged between the first edge portion 4 and the second edge portion 5. Advantageously, the joint strip 1 is arranged with a third edge portion 6 to form a tangent line at the corner of the window or door opening 10. The third edge portion 6 can advantageously be arranged at the tip of the corner of a window and door opening 10 while the first edge portion 4 and the second edge portion are at a distance to the corner which allows to apply the filler material directly to the panel surface at the edges which form the corner of a window and door opening 10.

[0051] The joint strip 1 comprises a third edge portion 6 which can be arranged generally with an angle 115<<155 to the first edge 4 portion. In the shown example, the third edge portion 6 is arranged at =135 to the first edge portion 4.

[0052] In this preferred example, the length of the third edge portion 6 is such that the lateral distance d of the first edge portion 3 from the centre of the third edge portion 6 is between 3 cm and 4 cm. The length of the third edge portion 6 is preferably at least 8 cm.