Field of the invention This invention relates to adhesive tape, specifically to an adhesive tape useful for applying caulk or grout in ceramic tile corners.

Background Ceramic tiles are a common wall and floor covering. It is obviously desirable that the tiles have the most attractive appearance possible. Ceramic tile is typically installed by gluing the tiles to the surface, with great care being used to achieve a regular and uniform pattern. After the glue has dried, the spaces between the tiles are filled with a cement-like substance known as grout. The grout is spread out over the tile surface filling the spaces, and the residue wiped away. When done properly, this technique provides a uniform and attractive result.

The corners between perpendicular walls present a problem however. The above-described grouting technique cannot be employed in the corners. Here a caulking gun, or other similar device, is used to inject the grout. In bathrooms or other areas exposed to water, such corners are often filled with silicone rubber caulking, which as a practical matter can only be applied with a caulking gun.

The installer uses a caulking gun by squeezing a trigger, which causes the caulking substance to flow from a pointed nozzle, while at the same time moving the nozzle along the corner. Unfortunately, it is very difficult to achieve a

uniform and attractive result using a caulking gun. The caulking substance flows from the nozzle more quickly when the trigger is first squeezed. If the installer does not precisely regulate the speed at which the caulking gun is moved along the wall, an irregular and unattractive result will be achieved.

One solution to this problem has been to adhere masking tape along each side of the corner. This is a very time- consuming and difficult procedure however. The two separate strips of tape must be applied at an equal distance from the corner and be kept parallel to each other along the entire length of the wall.

There is therefore a need for, and the present invention provides for, an adhesive tape that can be easily adhered in the corner created by perpendicular walls, and which creates an evenly-spaced, parallel channel in which grout or caulk can be applied.

Brief description of the drawings The present invention will be described with reference to the following figures, wherein Fig. 1 is a perspective view of a role of tape according to the invention.

Fig. 2 is a perspective view of a role of tape according to the invention, with one end slightly open.

Fig. 3 is a perspective view of the tape applied in a corner.

Fig. 4 is a perspective view of a caulking gun in use with the tape of the invention.

Detailed description of the invention As depicted in Fig. 1, 2 and 4 the tape according to the invention is packaged as a role 10. As will become evident below, this packaging is not only convenient, but is also important for the function of the invention.

The tape according to the invention comprises two identical, double-sided adhesive strips 12 and 12'.

Adhesive strips 12 and 12'have a front side and a back side. As shown in Fig. 2 and 3, said backsides of said adhesive strips 12 and 12'are attached to a backing strip 14 such that adhesive strips 12 and 12'are parallel to one another. Backing strip 14 is preferably made of a flexible plastic film or other suitable nonadhesive material.

Adhesive strips 12 and 12'are affixed along the outer edges of backing strip 14 such that, when backing strip 14 is folded in half and packaged as roll 10, adhesive strips 12 and 12'are in vertical alignment with one another, with the now-folded backing strip 14 sandwiched between them as depicted in Fig. 1. As can be further appreciated from Fig. 1, the width of backing strip 14 must be greater than two times the width of adhesive strip 12. This is in order to provide an exposed portion of backing strip 14 extending past the edges of adhesive strips 12 and 12'as shown in Fig. 1.

The tape according to the invention is used by first unrolling a length of tape from role 10. The folded edge of the exposed portion of backing strip 14 is then inserted into a corner. As can be appreciated from Fig. 2 and 3, the tape is then unfolded and the front sides of adhesive

strips 12 and 12'are pressed against the tiles. Because backing strip 14 is nonadhesive and does not adhere to the tiles, it can be easily removed as shown in Fig. 3. The result is a perfectly straight, parallel channel that is equidistant on both sides from the apex of the corner.

As shown in Fig. 4, a caulking gun 16 is then utilized to apply the caulk or grout in the space between adhesive strips 12 and 12'. Before the caulk or grout has dried, adhesive strips 12 and 12'are removed. An attractive and uniform result is thus achieved.