JP7438891B2 - Floor construction method and floor structure - Google Patents

Description

The present invention is a floor sheet for laying a floor sheet using double-sided tape on the surface (floor surface) of a new or existing floor, for example, when laying a new floor or renovating a floor in a bathroom, washroom, dressing room, etc. Concerning the construction method and floor structure after construction.

In recent years, renovations of rooms, hallways, bathrooms, washrooms, changing rooms, toilets, etc., have been actively carried out in detached houses, condominiums, dormitories, hotels, health care facilities for the elderly, nursing care facilities, hospitals, etc. Here, for example, when renovating a bathroom floor, the old flooring material on the top layer may be replaced with a new flooring material. However, in this case, it is difficult to remove the old flooring if it is fixed with adhesive, and it also requires treatment to smooth out any unevenness that has occurred on the construction surface, resulting in a lot of costs. and time consuming.

On the other hand, as a simple floor renovation that does not involve tearing out the old flooring, a floor construction method has traditionally been used in which a new sheet-like resin flooring (floor sheet) is laid on the surface of the existing floor. This floor construction method can reduce the time and cost required for renovation. However, even in this floor construction method, the floor sheet is attached to the existing floor surface with adhesive, so (1) applying the adhesive to the floor surface requires time and highly specialized techniques; 2) After the adhesive is applied to the floor surface, a certain amount of waiting time (open time) is required before the floor sheet is laid, and it takes a considerable amount of time from the start of construction work until the bathroom is ready for use. (3) Since the floor sheet is firmly bonded to the floor surface using adhesive, if there is a mistake in construction or the need to replace the floor sheet during the next renovation, it will take effort and labor to remove the floor sheet from the floor surface. This takes time and requires peeling off the adhesive that is firmly stuck to the floor and repairing damaged areas as necessary.

Therefore, a floor construction method using double-sided tape instead of adhesive has been proposed (see, for example, Patent Document 1). Compared to conventional floor construction methods using adhesives, this floor installation method using double-sided tape has the following advantages: (1) the floor sheet can be attached to the floor surface without waiting time (open time); 2) The work of applying double-sided tape to the floor surface does not require a long period of time and highly specialized skills, unlike the work of applying adhesive to the floor surface, so the construction work of floor sheet materials can be carried out efficiently. (3) When replacing the floor sheet, the floor sheet can be easily removed from the floor surface, and unlike adhesives, it is not difficult to remove from the floor surface. Workability is improved.

In a floor construction method in which a floor sheet is attached to an existing floor surface using double-sided tape, as shown in FIG. Generally, the double-sided tape 101 is pasted all around, and the double-sided tape 102 is pasted on the inner side of the outer periphery of the floor surface 100 at intervals in the vertical and/or horizontal directions of the floor surface 100. Note that the vertical direction is a direction extending between a pair of opposing side edges 100A of the floor surface 100 perpendicularly to the side edges 100A (a direction extending parallel to the other pair of side edges 100B), and a horizontal direction is a direction perpendicular to the vertical direction.

For example, in a bathroom, a chair (bath chair) 104 is placed on the floor 100 on which a floor sheet 103 is laid, and a person sits on the chair 104 in front of a faucet 105 or shower 106 to wash their body, face, and hair. There is. At this time, the person's body is supported by the chair 104, and when the person moves while washing his or her body, the chair 104 moves to rub against the floor sheet 103 while strongly pressing against the floor sheet 103. Here, if the double-sided tape 102 on the inside of the floor 100 is attached so as to extend along the vertical and horizontal directions of the floor 100 as shown in FIG. This corresponds to a direction parallel to or perpendicular to the longitudinal direction of the double-sided tape 102. In this case, an external force is concentrated on the floor sheet 103 at the location where the chair 104 is placed due to the movement of the chair 104, and the floor sheet 103 is strongly squeezed by the chair 104 at that location, so that the floor sheet 103 is High durability is required because there is a risk that parts of the floor surface 100 may be lifted up. Additionally, when floor sheets are laid on floors in offices, hospitals, etc., they must be durable enough to not be lifted up by other external forces such as the casters of chairs or the wheels of wheelchairs, stretchers, etc.

Japanese Patent Application Publication No. 2018-131870

The present invention makes it easy to peel off the floor sheet when the floor sheet is installed on the floor by adhering it to the floor using double-sided tape, and the floor sheet is removed from the floor surface by an external force such as a chair. The purpose of the present invention is to provide a construction method and a floor structure that can be used for a long time by preventing lifting of the floor.

A first aspect of the present invention relates to a floor construction method in which a floor sheet is laid on a floor surface by adhesion using double-sided tape. The floor construction method of the present invention includes a pasting step of pasting a double-sided tape on the surface of the floor, and a laying step of laying a floor sheet on the surface of the floor via the double-sided tape, wherein the double-sided tape , an outer circumferential tape and an inner tape, and in the pasting step, a plurality of the outer circumferential tapes are attached in a row along the outer circumferential edge of the surface of the floor, and on the inside of the outer circumferential edge, the outer circumferential edge A plurality of the inner tapes are attached at intervals in at least a partial region in front of the predetermined location so as to face diagonally with respect to the front direction of the predetermined location.

A preferred embodiment of the floor construction method of the present invention is characterized in that the ends of the adjacent peripheral tapes are not overlapped.

Further, a preferred embodiment of the floor construction method of the present invention is characterized in that a plurality of the inner tapes are arranged in parallel, and the inclination angle of the inner tapes is 30° or more and 50° or less. In this aspect, it is further preferable that the interval between the adjacent inner tapes is 50 mm or more and 250 mm or less.

Further, in a preferred embodiment of the floor construction method of the present invention, the surface of the floor has a substantially rectangular shape, and the predetermined location is located on one of four side edges constituting the outer peripheral edge of the surface of the floor. The inner tape is attached so as to face diagonally with respect to the direction perpendicular to the side edge.

Further, in a preferred embodiment of the floor construction method of the present invention, the floor is a bathroom floor, the floor is provided with a drain port, and at least one part of the outer peripheral edge of the surface of the floor at the boundary with the drain port is provided. The outer circumferential tape is attached so that two gaps exist, and gaps exist between both ends of the inner tape and the outer circumferential tape. In this aspect, it is further preferable that the inner tape is oriented diagonally so that one end is closer to the drain port than the other end.

A second aspect of the present invention relates to a floor structure in which a floor sheet is installed on a floor surface by adhesion using double-sided tape. The floor structure of the present invention includes a floor, a double-sided tape attached to the surface of the floor, and a floor sheet laid on the surface of the floor via the double-sided tape, and the double-sided tape includes the The inner tape includes a plurality of outer circumferential tapes that are attached in series along the outer circumferential edge of the floor surface, and a plurality of inner tapes that are attached at intervals from each other inside the outer circumferential edge, and the inner tape is attached to the floor surface. It is characterized in that it is attached to at least a partial area in front of a predetermined location on the outer peripheral edge of the surface thereof, so as to be oriented diagonally with respect to the front direction of the predetermined location.

In a preferred embodiment of the floor structure of the present invention, the floor is a bathroom floor, the floor is provided with a drainage port, and at least one gap exists at the boundary with the drainage port at the outer peripheral edge of the surface of the floor. The outer circumferential tape is pasted so that the inner tape has a gap between both ends of the inner tape and the outer circumferential tape, and one end of the inner tape is thicker than the other end. It is characterized in that it faces diagonally so as to approach the drain port.

In the construction method and floor structure of the present invention, when constructing a floor by laying a floor sheet on a floor surface by pasting it with double-sided tape, it is possible to easily peel off the floor sheet while applying external force such as a chair. This can prevent the floor sheet from lifting off the floor surface.

FIG. 2 is a plan view of a bathroom floor to which the floor structure of one embodiment is applied. FIG. 2 is a plan view of a bathroom floor with double-sided tape attached to the floor. FIG. 3 is an enlarged plan view of a part of FIG. 2; FIG. 2 is a plan view of a bathroom floor with double-sided tape pasted on the floor surface, which has a curved boundary with the bathtub. (A) A vertical cross-sectional view at the boundary between the floor surface and the bathtub or the bathroom wall surface, and (B) a vertical cross-sectional view at the boundary between the floor surface and the drain port. It is a top view of the floor of the bathroom to which the floor structure of other embodiments is applied. It is a top view of the floor of the bathroom to which the floor structure of other embodiments is applied. It is a top view of the floor of the bathroom to which the floor structure of other embodiments is applied. FIG. 2 is a plan view of a bathroom floor to which a conventional floor structure is applied.

Embodiments of the present invention will be described below with reference to the accompanying drawings. The present invention can be suitably used when constructing or renovating a bathroom, washroom, dressing room, etc., and can be used to apply double-sided tape to the surface (floor surface) of a new or existing floor. The present invention relates to a floor construction method in which a floor is constructed by laying a floor sheet by pasting the floor sheet, and a floor structure in which the floor sheet is laid on a new or existing floor surface by pasting with double-sided tape. The present invention can be used for both new construction and renovation, but is particularly suitable for laying a floor sheet on the surface of an existing floor during renovation.

The floor to which the present invention is applied is primarily a floor on which, for example, a chair or a stand is placed, and where a person is expected to do things while sitting on the chair or standing on the stand. be. For example, in a bathroom, the floor of the washing area equipped with faucets and showers for washing the body, face, hair, etc. can be cited. In addition, washrooms and changing rooms are equipped with wash basins and basins for washing the face and hands, and tables with mirrors (e.g. vanity tables and sinks) for drying hair, styling hair, applying makeup, etc. An example of this is the floor. The above-mentioned bathrooms include bathrooms built using conventional construction methods, one-piece unit baths with only a bathtub (and washing area), and bathrooms with a washstand in addition to a bathtub and shower room. , a two-piece unit bath with a bathtub and washbasin assembled into one, a bathroom with a washstand and toilet in addition to a bathtub and shower room, and a bathroom with a bathtub, washbasin, and toilet installed in one. A 3-piece unit bath is also included.

In the case of a new construction, the floor to which the floor sheet is attached is a floor made of plywood, mortar, etc. before the floor finishing material is laid, and in the case of a renovation, it is a floor made of plywood, mortar, etc., such as porcelain tiles, fiber reinforced plastic (FRP) ), the floor is finished with resin sheets, etc.

As shown in FIGS. 1 and 2, the floor structure 1 of this embodiment is a floor structure in which a floor sheet 4 is laid on an existing floor surface (floor surface) 12 by pasting using double-sided tapes 2 and 3. It is. The floor structure 1 includes at least an existing floor, double-sided tapes 2 and 3 affixed to the existing floor surface 12, and a floor sheet 4 laid on the existing floor surface 12 via the double-sided tapes 2 and 3. Be prepared. The floor construction method of this embodiment includes (i) a pasting step of pasting double-sided tapes 2 and 3 on the existing floor surface 12, and (ii) a floor sheet applied to the existing floor surface 12 via the double-sided tapes 2 and 3. (iii) a pressing step of pressing the laid floor sheet 4 against the existing floor surface 12. Note that the floor on which the floor sheet 4 is laid is not limited to an existing floor, as described above, and may be a newly constructed floor.

This embodiment will be described using a bathroom floor as an example, and FIGS. 1 and 2 show a bathroom floor to which the floor construction method and floor structure 1 of this embodiment are applied. In the following description, in FIGS. 1 and 2, the vertical direction is the vertical direction of the floor surface 12, and the left-right direction is the horizontal direction of the floor surface 12.

The bathroom shown in FIGS. 1 and 2 includes a bathtub 10 and a washing area 11 adjacent to the bathtub 10. The floor of the washing area 11 has a rectangular shape in plan view, and a drain port 13 is provided in the corner of the floor of the washing area 11 on the side of the bathtub 10. The floor surface 12 includes a pair of opposing side edges 12A, 12B and another pair of opposing side edges 12C, 12D. The floor surface 12 has a drain port 13 adjacent to one corner of the side edge 12A adjacent to the bathtub 10 (the corner with the side edge 12C), and the corner is not rectangular, so the floor surface 12 is approximately rectangular as a whole. It has a shape. The bathroom wall surface 17 of the washing area 11 is equipped with a faucet 14 and a shower 15 for washing the body, and in the illustrated example, the faucet 14 and the shower 15 are located above the side edge 12C of the floor surface 12. There is. Note that the positions of the faucet 14 and the shower 15 on the side edge 12C of the floor surface 12 correspond to the "predetermined location on the outer peripheral edge" in the present disclosure.

First, the floor construction method of this embodiment, the double-sided tapes 2 and 3 used in the floor structure 1, and the floor sheet 4 will be explained.

The double-sided tapes 2 and 3 are made by coating both sides of a strip-shaped base material with an adhesive or a pressure-sensitive adhesive. The double-sided tapes 2 and 3 are not particularly limited as long as they can adhere the floor sheet 4 to the existing floor surface 12 that is the base, and conventionally known tapes can be used. It is preferable to use a material that is excellent in conformability to irregularities, plasticizer resistance, creep property, ease of peeling, and the like. For example, "Basna Tape (manufactured by Tori Co., Ltd.)" can be suitably used as the double-sided tapes 2 and 3.

The thickness of the double-sided tapes 2 and 3 is not particularly limited, but is preferably, for example, 0.37 mm or more and 0.45 mm or less, and more preferably 0.38 mm or more and 0.42 mm or less. When the thickness of the double-sided tapes 2 and 3 is equal to or greater than the lower limit, the adhesion of the floor sheet 4 to the existing floor surface 12 can be strengthened. In addition, since it is possible to prevent unintentional cutting of the double-sided tapes 2 and 3 during construction, work efficiency during construction can be improved, and when the floor sheet 4 is replaced, there is no need to cut the double-sided tapes 2 and 3 midway, so the floor surface It becomes easy to peel off from 12, and work efficiency during the next renovation can also be improved. On the other hand, since the thickness of the double-sided tapes 2 and 3 is less than the upper limit, the difference in level between the area where the double-sided tapes 2 and 3 are present and the area where the double-sided tapes 3 are not present on the floor surface 12 is transmitted to the surface side of the floor sheet 4. This can prevent the floor sheet 4 from feeling uncomfortable to the touch.

The width of the double-sided tapes 2 and 3 is not particularly limited, but is preferably, for example, 30 mm or more and 50 mm or less, and more preferably 35 mm or more and 45 mm or less. By making the width of the double-sided tapes 2 and 3 equal to or greater than the lower limit value, the adhesion area between the floor surface 12 and the floor sheet 4 can be made sufficient without significantly increasing the number of double-sided tapes 2 and 3 to be pasted on the floor surface 12. be able to. Therefore, the floor sheet 4 can be fixed to the floor surface 12 for a long period of time by making it difficult for the floor sheet 4 to peel off from the existing floor surface 12 while reducing the labor involved in construction work. On the other hand, since the width of the double-sided tapes 2 and 3 is less than the upper limit, the area to which the double-sided tapes 2 and 3 are attached to the floor surface 12 is reduced. The double-sided tapes 2 and 3 are less likely to wrinkle, and the work of attaching the double-sided tapes 2 and 3 can be facilitated. Further, since a sufficient work space can be secured on the floor surface 12 during construction, work efficiency during construction can be improved.

The double-sided tapes 2 and 3 are attached to multiple locations on the existing floor surface 12. The double-sided tapes 2 and 3 are not attached to the entire area of the floor surface 12, but are attached to a partial area of the floor surface 12. Specifically, a double-sided tape 2 (hereinafter also referred to as "peripheral tape 2") is pasted along the outer periphery of the floor surface 12, and a plurality of double-sided tapes are attached at intervals inside the outer periphery of the floor surface 12. Tape 3 (hereinafter also referred to as "inner tape 3") is pasted.

First, in the illustrated example, the outer circumferential tape 2 is pasted along the boundary between the bathtub 10, the drain port 13, and the bathroom wall surface 17 on the floor surface 12. As a result, the outer peripheral edge of the floor sheet 4 can be brought into close contact with the floor surface 12 via the peripheral tape 2, so that water or the like does not enter between the floor surface 12 and the floor sheet 4 laid on the floor surface 12. can be suppressed.

The outer circumferential tape 2 along the outer circumferential edge of the floor surface 12 is continuous over approximately one circumference of the outer circumferential edge of the floor surface 12. In the illustrated example, the outer peripheral tape 2 is constituted by a plurality of double-sided tapes 2A to 2F, which are double-sided tapes extending in the vertical direction of the floor surface 12 and double-sided tapes extending in the horizontal direction. Of the peripheral tapes 2A to 2F, the portions 2A to 2D of the floor surface 12 along the boundary with the bathtub 10 and the bathroom wall surface 17 (portions along the side edges 12A to 12D of the floor surface 12) are continuous with the floor surface without any gaps. It is preferable that it is attached to 12. In other words, the edges of the peripheral tapes 2A, 2D, 2D, 2B, and 2B, 2C that are adjacent to each other at right angles are butted against each other, that is, the distance between the peripheral tapes is 0 mm, and they are connected without any gaps. It is preferable. Thereby, it is possible to effectively suppress water and the like from entering between the floor surface 12 and the floor sheet 4 laid on the floor surface 12.

If it is difficult to butt the edges of adjacent outer circumferential tapes together, it is better to connect the edges without overlapping them, as shown in Figure 3, rather than overlapping them slightly to connect them without any gaps. The ends may be discontinuous so that there is a gap S1 between them. Since the ends of adjacent peripheral tapes are not overlapped, the thickness of the peripheral tapes 2A to 2D does not partially increase, so that the level difference in the floor surface 12 caused by pasting the peripheral tapes 2A to 2D is on the front side of the floor sheet 4. This makes it difficult to convey the feeling of discomfort to the floor sheet 4, and it is possible to prevent the floor sheet 4 from feeling uncomfortable to the touch. The above-mentioned gap S1 is, for example, 10 mm or less, and is preferably 10 mm or less, from the viewpoint of suppressing as much as possible easy entry of water etc. from the gap S1 between the floor surface 12 and the floor sheet 4 laid on the floor surface 12. It is 5 mm or less.

On the other hand, among the peripheral tapes 2A to 2F, the parts 2E and 2F along the boundary with the drain port 13 of the floor surface 12 are intermittently connected to the floor surface 12 so that a gap S2 exists, as shown in FIG. Preferably, it is pasted. In other words, the peripheral tapes 2A, 2E, the peripheral tapes 2E, 2F, and the peripheral tapes 2F, 2C, which are adjacent at right angles, are arranged so that a gap S2 is left between the ends without butting or overlapping the ends. It is preferable to make it discontinuous. As a result, even if water or the like intrudes between the floor surface 12 and the floor sheet 4 laid on the floor surface 12, the infiltrated water can be drained by flowing into the drain port 13 from the gap S2. can. The above-mentioned gap S2 maintains the drainage function of the gap S2 while suppressing as much as possible the easy intrusion of water etc. from the gap S2 between the floor surface 12 and the floor sheet 4 laid on the floor surface 12. From this point of view, the length is preferably 3 mm or more and 15 mm or less, and more preferably 5 mm or more and 10 mm or less.

In addition, in FIG. 2, the side edge 12A of the floor surface 12 along the boundary with the bathtub 10 has a linear shape, but as shown in FIG. 4, when the side edge 12A of the floor surface 12 has a curved shape By connecting the short linear outer peripheral tapes 2A1 to 2A5 in a substantially curved shape, it is pasted along the side edge 12A. It is preferable that the outer circumferential tapes 2A1 to 2A5 are continuously attached to the floor surface 12 without any gaps. In other words, it is preferable to connect adjacent outer circumferential tapes of the outer circumferential tapes 2A1 to 2A5 so that at least some of them are in contact with each other. If it is difficult to bring parts of adjacent peripheral tapes into contact with each other, the peripheral tapes 2A1 to 2A5 may be applied discontinuously to the floor surface 12 so that the above-mentioned gap S1 is left. In FIG. 4, the drain port 13 has a triangular shape, and the outer peripheral tapes 2E and 2F along the boundary between the floor surface 12 and the drain port 13 are intermittently connected to the floor surface 12 so that the above-mentioned gap S2 exists. is pasted on.

Next, as shown in FIGS. 1 and 2, the inner tape 3 that is pasted on the inside of the outer periphery of the floor surface 12 is placed in front of the predetermined portion in at least a portion including the predetermined portion of the outer periphery of the floor surface 12. It is attached to the floor surface 12 so as to extend obliquely to the direction.

Here, "predetermined areas on the outer periphery of the floor" refers to faucets and showers for washing the whole body, face, hands, hair, etc., mirrors and tables with mirrors for drying hair, styling hair, applying makeup, etc. This is the location where equipment used by people when doing things, such as a washstand or vanity table, is installed, and a chair or stand is placed on the floor 12 in front of it, and a person can sit on the chair. This is a place where you are expected to do things while standing on a table or on a table.

Furthermore, "the front direction of a predetermined location on the floor surface" is a direction perpendicular to the straight line and facing inside of the floor surface 12, if the outer peripheral edge of the floor surface 12 where the predetermined location is located is linear; If the outer peripheral edge of the floor surface 12 on which the predetermined location is located has a curved shape such as a circular arc, the direction is perpendicular to the tangent of the curve and faces inside the floor surface 12.

Furthermore, "at least a partial area in front of a predetermined location on the floor surface" is a partial area on the floor surface 12 located a predetermined distance in front of the predetermined location, for example, but not limited to, 300 mm to 900 mm in front of the floor surface, such as a chair or the like. This is an area including at least a portion where a stand or the like is preferably placed. In the example shown in FIGS. 1 and 2, the inner tape 3 faces diagonally over the entire area of the floor 12, but for example, about 1/3 of the side edge 12C side where the chair 16 is placed in the vertical direction of the floor 12. The inner tape 3 may be oriented diagonally, preferably in about half the area.

Furthermore, the direction "facing diagonally with respect to the front direction of a predetermined place on the floor surface" is a direction that is neither perpendicular nor parallel to the front direction of the predetermined place, and in the example of FIGS. Since the direction corresponds to the vertical direction of the floor surface 12, the direction is inclined with respect to the vertical direction of the floor surface 12. Therefore, the plurality of inner tapes 3 are oriented diagonally with respect to the outer peripheral tapes 2A to 2F extending in the vertical or horizontal direction of the floor surface 12.

For example, in the washing area 11 of a bathroom, the predetermined location is assumed to be mainly a faucet 14, a shower 15, or a location where a mirror is placed. In such a place, a chair (bath chair) 16 is placed on a floor surface 12 on which a floor sheet 4 is laid so that users of the washing area 11 can use a faucet 14, a shower 15, and a mirror. When a user moves to wash his hair or body while sitting on a chair 16 in front of a faucet 14, a shower 15, or a mirror, his body is supported by the chair 16, so the chair 16 is pressed firmly against the floor sheet 4. . Therefore, the chair 16 moves to rub against the floor sheet 4, and a load is applied to the adhesive surface of the floor 12. Here, if a plurality of inner tapes 3 are attached to the floor surface 12 so as to face diagonally as shown in FIGS. 1 and 2, the moving direction of the chair 16 is parallel to the longitudinal direction of the inner tapes 3. direction or perpendicular direction. Therefore, an external force due to the movement of the chair 16 acts on the floor sheet 4 at the location where the chair 16 is placed, but this external force is not concentrated on the location of the floor sheet 4 where the chair 16 is placed, but is dispersed. The seat 4 does not receive any local force from the chair 16. Therefore, even if the floor sheet 4 is squeezed by the chair 16, it is possible to prevent the floor sheet 4 from partially lifting off the existing floor surface 12.

The inclination angle θ of the inner tape, that is, the direction perpendicular to the front direction of a predetermined location, the angle θ formed between it and the horizontal direction of the floor surface 12 in the examples of FIGS. 1 and 2 is not particularly limited, but For example, the angle is preferably 30° or more and 60° or less, more preferably 40° or more and 50° or less, and even more preferably 45°. By setting the inclination angle θ within the above range, even when the floor sheet 4 is squeezed by the chair 16 as described above, it is possible to effectively suppress the floor sheet 4 from partially lifting off from the existing floor surface 12. .

As shown in FIGS. 1 and 2, it is preferable that the plurality of inner tapes 3 all extend in the same direction and be attached to the floor surface 12 so as to be lined up parallel to each other. This facilitates the work of attaching the inner tape 3 when attaching the double-sided tapes 2 and 3 to the floor surface 12. In this case, the distance D between adjacent inner tapes 3 is not particularly limited, but is preferably 50 mm or more and 250 mm or less, more preferably 100 mm or more and 200 mm or less, and even more preferably 150 mm. By setting the interval D to be equal to or greater than the lower limit value and not making the area of adhesion of the inner tape 3 to the floor surface 12 too large, it is easier to attach the inner tape 3 to the floor surface 12, and the adhesion of the inner tape 3 to the floor surface 12 is made easier. Since sufficient work space can be secured, work efficiency during construction will be improved. On the other hand, when the distance D is equal to or less than the upper limit value, a sufficient adhesion area of the floor sheet 4 to the floor surface 12 is ensured, and the floor sheet 4 becomes difficult to peel off from the floor surface 12. Therefore, even if the floor sheet 4 is squeezed by the chair 16 as described above, it is possible to effectively prevent the floor sheet 4 from partially lifting off the existing floor surface 12.

It should be noted that the plurality of inner tapes 3 may have some extending in the same direction and the remaining parts may extend in different directions, or all of the inner tapes 3 may extend in different directions.

As shown in FIGS. 1 and 2, the plurality of inner tapes 3 are preferably attached to the floor surface 12 such that a gap S3 exists between their ends and the outer circumferential tapes 2A to 2F. . This gap S3 is the closest distance between the inner tape 3 and the outer circumferential tapes 2A to 2F. The floor surface 12 of the bathroom washing area 11 is generally sloped so that water on the floor surface 12 descends gently toward the drain port 13 so that water naturally flows toward the drain port 13. Therefore, even if water or the like intrudes between the floor surface 12 and the floor sheet 4 laid on the floor surface 12, the infiltrated water is guided to the drain port 13 along the floor surface 12. Here, both ends of the plurality of inner tapes 3 are not connected to the outer circumferential tapes 2A to 2F, and are located at a distance from the outer circumferential tapes 2A to 2F with a gap S3, so that the infiltrated water can flow onto the floor surface 12. When the water passes between the adjacent inner tapes 3 and is guided to the outer circumferential tapes 2A, 2C on the drain port 13 side, it passes through the gap S3. It can lead up to 13. Therefore, the water that has entered can flow into the drain port 13 and be drained. The above-mentioned gap S3 is, for example, 3 mm or more and 15 mm or less, preferably 5 mm, from the viewpoint of making it possible to adhere the outer peripheral edge of the floor sheet 4 to the floor surface 12 well and maintaining the water flow function of the gap S3. It is not less than 10 mm.

Note that in the case of the existing floor structure 1 without the drain port 13, both ends of the plurality of inner tapes 3 may be connected to the outer peripheral tapes 2A to 2F without any gaps.

As shown in FIGS. 1 and 2, the plurality of inner tapes 3 are oriented diagonally so that one end is closer to the drain port 13 than the other end, and extend toward the drain port 13. It is preferable that it be attached to the floor surface 12 in this manner. That is, in the example shown in FIGS. 1 and 2, all the inner tapes 3 face diagonally upward to the left from the other end to one end toward the drain 13 in the upper left corner of the floor surface 12. It extends like this. Since the plurality of inner tapes 3 extend toward the drain port 13, even if water or the like infiltrates between the floor surface 12 and the floor sheet 4 laid on the floor surface 12, as described above, Since the water that has entered can be smoothly guided toward the drain port 13, drainage can be promoted.

Note that all of the plurality of inner tapes 3 do not necessarily have to extend toward the drain port 13, only some may extend toward the drain port 13, or all of the inner tapes 3 may extend toward the drain port 13. It does not have to extend toward 13.

Next, the floor sheet 4 is a sheet material that is laid on the existing floor surface 12 to improve the design and functionality of a bathroom or the like. The shape of the floor sheet 4 in plan view is not particularly limited, and may be formed in an elongated shape, or may be formed in a rectangular or polygonal shape like a floor tile. And from the viewpoint of workability, it is preferable that the floor sheet 4 consists of a single sheet without joints. The elongated floor sheet 4 is usually rolled up into a roll for storage and transportation. Particularly, since bathrooms have limited internal space and narrow entrances, the ability to roll the floor sheet 4 is a great advantage because it is easier to transport and install.

The surface shape of the floor sheet 4 is not particularly limited, but may be, for example, an uneven shape having a protrusion or an inclined surface having anti-slip properties. Further, the uppermost surface layer of the floor sheet 4 may contain a weatherproofing agent, a plasticizer, a stabilizer, a filler, a dispersant, a coloring agent such as a dye or a pigment, a solvent, etc., as necessary.

It is better to lower the gloss level of the surface of the floor sheet 4 than to increase it, so that when the unevenness or unevenness of the underlying floor surface 12 is exposed on the surface of the floor sheet 4, it is difficult to see with the human eye. It is preferable because it is effective. Furthermore, even if unevenness appears due to tape application, if it is difficult to see with the human eye, it will not be noticeable and will not be a problem. In order to make the exposed unevenness difficult to see with the human eye, the glossiness (60°) is preferably 0.3 or more and 60 or less, more preferably 0.5 or more and 30 or less. Note that the glossiness (60°) can be measured using a glossiness measuring device such as GM-3D (manufactured by Murakami Color Research Institute Co., Ltd.). Examples of methods for lowering the gloss include adding a matting agent such as silica or plastic beads to the surface layer of the floor sheet 4, and adding protrusions or slopes to provide anti-slip properties. Another method includes forming fine irregularities on the surface. Small fine embossing tends to suppress the gloss level more than large fine embossing. Due to the formation of fine irregularities, the light hitting the surface of the floor sheet 4 is diffusely reflected, resulting in low gloss. The surface roughness of the fine irregularities is not particularly limited, but if it is too rough, it may appear to have high gloss depending on the direction of light reflection, whereas if it is too fine, it may look almost like a mirror surface. From such a viewpoint, the surface roughness (center line average roughness (Ra) according to JIS B 0601) is preferably 5 μm or more and 15 μm or less, and more preferably 6 μm or more and 10 μm or less. The unevenness and protrusions on the surface of the floor sheet 4 are usually formed by embossing, but the embossing method is not particularly limited, and a known single-fed or rotary embossing machine can be used. The uneven shapes include, for example, wood grain board conduit grooves, stone plate surface unevenness (granite cleavage surface, etc.), cloth surface texture, satin finish, sand grain, hairline, parallel grooves, V-cut shape, fine net shape, fine dot shape, Examples include striped shapes. In addition to embossing, fine irregularities can be formed by roughening the surface by sandblasting or sanding, or by embedding fine particles such as filler into the surface. By adding such minute irregularities, it becomes easier to hide irregularities due to unevenness and irregularities caused by tape construction.

Examples of the functionality of the floor sheet 4 include anti-slip properties, cushioning properties, heat shielding properties, and improved contact thermal sensation. The floor sheet 4 preferably has appropriate cushioning properties to enhance pain resistance, and furthermore, when used in a bathroom etc., preferably has heat insulating properties to reduce heat shock and enhance the sense of warmth, and includes a foam layer. It is preferable. The floor sheet 4 may be formed entirely of a foam layer, but if a protrusion or slope that is difficult to collapse is formed on the surface of the sheet body to increase slip resistance, it should have a non-foam surface layer. is preferred. In addition, it is preferable to have flexibility so that it can be wound into a roll so that it can be easily stored and transported and also easily transported into the bathroom during construction.

The material of the floor sheet 4 is not particularly limited as long as it can be laid on the existing floor surface 12, and for example, a flexible resin sheet such as vinyl chloride resin or olefin resin can be used. . Among these, it is preferable to use vinyl chloride resin as the main resin component because it has excellent workability with flexibility, durability, and cost. PVC resin has excellent flexibility, so it can form a flexible floor surface after construction, and the floor sheet 4 can be easily stored and transported by being rolled up into a roll, and can be easily transported into the bathroom during construction. There is also an advantage. Furthermore, it is preferable to use a vinyl chloride resin in terms of its excellent adhesion to the underlying floor surface 12 during renovation.

The floor sheet 4 may have a single layer structure or a multilayer structure formed by laminating a plurality of layers. In the case of a multilayer structure, a two or more layer structure can be adopted.

The thickness of the floor sheet 4 is not particularly limited, but is preferably, for example, 1.8 mm or more and 5.0 mm or less, and more preferably 2.0 mm or more and 4.0 mm or less. The thickness of the floor sheet 4 refers to the maximum layer thickness when the thickness is uneven, such as when the floor sheet 4 is embossed. When the thickness is 1.8 mm or more, strength is easily ensured, and when the thickness is 5 mm or less, flexibility increases, so workability during construction improves. Furthermore, even if the floor sheet 4 is laid on the existing floor surface 12, by setting the thickness to 5 mm or less, fluctuations in the floor surface height after construction can be suppressed within a range that does not cause problems, and the aesthetic appearance after renovation can be suppressed. can also be kept. Furthermore, if the thickness of the floor sheet 4 is within the above range, it is possible to suppress unevenness and unevenness of the floor surface 12, which is the base, from appearing on the surface of the floor sheet 4.

The floor sheet 4 may be provided with one or more reinforcing layers to increase its rigidity and provide dimensional stability. When a plurality of reinforcing layers are provided in the thickness direction, even if the existing floor surface 12 has relatively large irregularities, it is difficult for the floor sheet 4 to follow the irregularities of the floor surface 12, and the floor sheet 4 It is possible to further suppress the appearance of unevenness on the surface. Examples of the reinforcing layer include glass mats, glass nets, resin mats, resin nets, nonwoven fabrics or felts made of inorganic fibers or organic fibers, and woven fabrics, which have excellent strength and are resistant to dimensional change. It is particularly preferable to use glass fiber because it has a small value. When using glass fibers, glass fiber woven fabrics or non-woven fabrics with a basis weight of 10 g/m ² or more and 100 g/m ^{2 or} less are particularly preferred. Also, for woven fabrics or non-woven fabrics using other fibers such as polyester, the same level of basis weight is preferable. When the degree of rigidity is increased during renovation work, the floor sheet 4 becomes difficult to shift and deform even if the floor sheet 4 is not attached to the entire area of the floor surface 12 as a base. Moreover, if the basis weight of the glass fiber is within the above range, it is possible to suppress unevenness and unevenness of the floor surface 12, which is the base, from appearing on the surface of the floor sheet 4.

Further, a base material layer may be provided on the lowermost back layer of the floor sheet 4 for the purpose of increasing the adhesive strength with the double-sided tapes 2 and 3 and preventing displacement of the non-attached portion. This base material layer is not particularly limited, and for example, conventionally known sheet materials such as nonwoven fabric, woven fabric, paper, and felt can be used. The material of the fibers constituting the nonwoven fabric or woven fabric is not particularly limited, and includes, for example, synthetic resin fibers such as polyester and polyolefin; inorganic fibers such as glass and carbon; and natural fibers. Examples of the nonwoven fabric include spunbond nonwoven fabric, thermal bond nonwoven fabric, chemical bond nonwoven fabric, needle punched nonwoven fabric, and spunlace nonwoven fabric. These can be used alone or in combination of two or more. Among these, spunbond nonwoven fabric is preferred because it is thin and strong, and polypropylene spunbond nonwoven fabric is more preferred.

The thickness of the base material layer is not particularly limited, but is preferably, for example, 0.1 mm or more and 0.5 mm or less, and more preferably 0.2 mm or more and 0.4 mm or less. Further, the basis weight of the base material layer is not particularly limited, but is preferably, for example, 30 g/m ² or more and 70 g/m ² or less. When the thickness and basis weight of the base material layer are within the above ranges, it is possible to suppress unevenness and unevenness of the floor surface 12, which is the base material, from appearing on the surface of the floor sheet 4.

Next, the floor construction method of this embodiment will be described with reference to FIGS. 1 and 2.

First, if the existing floor surface 12 of the washing area 11 of the bathroom has unevenness, such as large unevenness in height or width, or cracks, smoothing treatment is performed using a base repair material as necessary. When the existing floor surface 12 is made of fiber-reinforced plastic (FRP) or tiles, for example, "Basna Putty EPO" (manufactured by Tori Co., Ltd.) can be suitably used as the base repair material.

Then, double-sided tapes 2 and 3 are pasted on predetermined locations on the existing floor surface 12 (double-sided tape pasting process). Specifically, along the outer peripheral edge of the floor surface 12, that is, at the boundary between the bathtub 10, the drain port 13, and the bathroom wall surface 17 on the floor surface 12, the outer peripheral tapes 2A to 2F are applied along the length direction thereof. Paste. At this time, the outer peripheral tapes 2A to 2D along the side edges 12A to 12D of the floor surface 12 are attached to the floor surface 12 so that the ends of adjacent double-sided tapes do not overlap. Further, the outer circumferential tapes 2E and 2F along the boundary with the drain port 13 are attached to the floor surface 12 so that a gap S2 exists.

Furthermore, a plurality of inner tapes 3 are attached to the floor surface 12 at predetermined intervals inside the outer peripheral edge of the floor surface 12 so as to face obliquely to the vertical or horizontal direction of the floor surface 12. At this time, the distance D between adjacent inner tapes 3 is most preferably about 150 mm, and the inclination angle θ of the inner tapes is most preferably about 45 degrees. Further, the inner tape 3 is attached to the floor surface 12 so that a gap S3 is left between both ends thereof and the outer peripheral tapes 2A to 2F. Further, the inner tape 3 is attached to the floor surface 12 in an oblique direction so that one end is closer to the drain port 13 than the other end.

When the double-sided tape pasting process is completed, the floor sheet 4 is laid on the floor surface 12 via the double-sided tapes 2 and 3 (floor sheet laying process). At this time, the size of the floor sheet 4 is adjusted by cutting the floor sheet 4 using a cutting tool such as a cutter. Note that the floor sheet 4 may be cut to desired dimensions in advance.

When the process of laying the floor sheet material is completed, the entire surface of the floor sheet 4 laid on the floor surface 12 is pressed by a pressing roller or the like (floor sheet material pressing process). The direction in which the floor sheet 4 is pressed is not particularly limited, but it is preferably in the same direction as the double-sided tapes 2 and 3. Thereby, by removing air between the floor sheet 4 and the floor surface 12, the adhesion between the floor sheet 4 and the floor surface 12 is strengthened.

Finally, the outer peripheral edge of the floor sheet 4 is sealed. Specifically, as shown in FIGS. 5(A) and 5(B), the outer peripheral edge of the floor sheet 4 has a gap S4 from the boundary with the bathtub 10, the bathroom wall 17, or the drain 13 on the floor 12. It is attached to the floor surface 12 in a flat state. This gap S4 is provided for sealing the periphery of the floor sheet 4 pasted on the floor surface 12 with the sealant 5, and its size is, for example, 2 mm or more and 10 mm or less, preferably 4 mm or more. It is 6 mm or less. The sealing agent 5 is filled into the gap 4 of the floor surface 12 using a caulking gun or the like, and the sealant 5 is applied to the outer peripheral surface of the floor sheet 4 and the floor surface 12 around the floor sheet 4, as well as the wall surface of the bathtub 10 in FIG. 5(A). A part of the bathroom wall surface 17 is coated with a sealant 5. Thereby, the sealant 5 prevents water from entering between the floor surface 12 and the floor sheet 4. The width of the sealant 5 is, for example, 2 mm to 10 mm, preferably 4 mm to 6 mm, but by having the width within the above range, sufficient watertightness can be ensured and the exposure of the sealant 5 is not noticeable. , it is possible to prevent spoiling the beauty of the bathroom. It is preferable that the outer circumferential tape 2 is aligned with the outer circumferential edge of the floor sheet 4 without any gaps, but since sealing is performed, a gap within the range of the above-mentioned gap S4 is acceptable.

Although the sealing agent 5 is not particularly limited, it is preferable that the sealing agent 5 rides on the surface of the floor sheet 4 on the side that contacts the outer peripheral surface of the floor sheet 4. As a result, the surface of the outer peripheral edge of the floor sheet 4 is covered with the sealant 5, so that the outer peripheral edge of the floor sheet 4 can be prevented from being rolled up, and the sealant 5 can prevent the outer peripheral edge of the floor sheet 4 from being rolled up. Infiltration of water can be more effectively prevented. In addition, although the sealant 5 is not particularly limited, in FIG. It is preferable that it be provided at an angle. Thereby, water adhering to the wall surface of the bathtub 10 or the bathroom wall surface 17 can be well guided onto the surface of the floor sheet 4 along the slope of the sealant 5 and drained. Moreover, in FIG. 5(B), it is preferable that the sealing agent 5 is provided in an inclined manner so that the side in contact with the outer circumferential surface of the floor sheet 4 is the highest and the boundary side with the drain port 13 is the lowest. Thereby, water on the floor sheet 4 can be efficiently guided to the drain port 13. Note that the shape of the sealant 5 is not limited to the shapes shown in FIGS. 5(A) and 5(B).

The sealant 5 is not particularly limited, but includes, for example, one-component silicone sealant, one-component modified silicone sealant, two-component silicone sealant, and two-component modified silicone sealant. , a two-component epoxy sealant, a two-component polysulfide sealant, a one-component polyurethane sealant, a two-component polyurethane sealant, and the like.

By the construction method described above, a floor structure 1 is completed in which a floor sheet 4 is constructed over the entire floor surface 12 of a bathroom washing area 11 using double-sided tapes 2 and 3.

In addition, in this embodiment, the construction method is explained when there is no drainage groove in the position adjacent to the bathtub 10 on the floor surface 12. However, in the floor surface 12 where there is a drainage groove, An outer circumferential tape 2A is attached to the boundary between the 12 bathtubs 10 and the adjacent drainage ditches, and the floor sheet 4 is constructed in the same manner as in the above-described embodiment.

According to the floor construction method and floor structure 1 of the present embodiment described above, as shown in FIGS. 1 and 2, the double-sided tape 3 is oriented diagonally inside the outer periphery of the floor surface 12, and the floor surface 12, and the floor sheet 4 is laid on the floor surface 12. As a result, if the chair 16 is placed in front of the faucet 14 or the shower 15, and a person is washing their hair or body while sitting on the chair 16, the floor sheet 4 may be strained by the chair 16 due to the person moving. Also, since the direction in which the chair 16 moves does not coincide with the direction parallel to or perpendicular to the longitudinal direction of the inner tape 3, even if the external force due to the movement of the chair 16 acts on the location of the floor sheet 4 where the chair 16 is placed, This external force can be dispersed without being concentrated on the part of the floor sheet 4 where the chair 16 is placed. Therefore, the local force applied to the floor sheet 4 from the chair 16 can be alleviated, so even if the floor sheet 4 is squeezed by the chair 16, the floor sheet 4 is prevented from partially lifting off from the existing floor surface 12. can. Therefore, it becomes possible to use the floor sheet 4 in good condition for a long period of time.

Note that although Figures 1 and 2 take the floor of a bathroom equipped with faucets and showers as an example, it also applies to bathrooms and dressing rooms equipped with washbasins, mirrors, tables with mirrors (dressing tables, sinks), etc. Similarly, for the floor where the washbasin, mirror, table with mirror, etc. are installed, apply inner tape 3 as a double-sided tape to at least a partial area in front of the predetermined location in the front direction of the predetermined location. The floor sheet 4 is laid on the floor 12 by pasting it on the floor 12 so as to face diagonally. With this, for example, a chair can be placed in front of a washbasin, a mirror, a table with a mirror, etc. on the floor surface 12 on which the floor sheet 4 is laid, and the person can move while sitting on the chair and doing the desired thing. Even if the floor sheet 4 is squeezed by the chair, the direction in which the chair moves (parallel to or perpendicular to the front direction) is parallel to or perpendicular to the longitudinal direction of the inner tape 3. do not. Therefore, even if an external force due to the movement of the chair acts on the part of the floor sheet 4 where the chair is placed, this external force can be dispersed without being concentrated on the part of the floor sheet 4 where the chair is placed. Therefore, it is possible to reduce the local force that the floor sheet 4 receives from the chair, so that even if the floor sheet 4 is squeezed by the chair, it is possible to suppress the floor sheet 4 from partially lifting off from the existing floor surface 12. Therefore, it becomes possible to use the floor sheet 4 in good condition for a long period of time. In addition, since the double-sided tapes 2 and 3 are placed on the floor 12 at appropriate intervals and many double-sided tapes are not placed closely on the floor 12, if it becomes necessary to replace the floor sheet 4. Moreover, the floor sheet 4 can be easily peeled off.

Further, according to the floor construction method and floor structure 1 of the present embodiment, as shown in FIGS. 1 and 2, the double-sided tape 2 is pasted on the floor surface 12 along the outer periphery of the floor surface 12 to form a floor sheet 4. is laid on the floor 12. As a result, the outer peripheral edge of the floor sheet 4 can be brought into close contact with the floor surface 12, so that water or the like can be prevented from entering between the floor surface 12 and the floor sheet 4 laid on the floor surface 12.

Furthermore, according to the floor construction method and floor structure 1 of the present embodiment, as shown in FIGS. 1 and 2, the edges of adjacent double-sided tapes of the outer circumferential tapes 2A to 2D are not overlapped with each other. Since the thickness of the tapes 2A to 2D does not partially increase, the difference in level of the floor surface 12 caused by pasting the peripheral tape 2 becomes difficult to be transmitted to the surface side of the floor sheet 4, and the floor sheet 4 feels uncomfortable to the touch. It can be suppressed.

Further, according to the floor construction method and floor structure 1 of this embodiment, as shown in FIGS. 1 and 2, the outer circumferential tapes 2E and 2F are attached to the floor surface 12 such that a gap S2 exists at the boundary with the drain port 13. is pasted on. In addition, both ends of the inner tape 3 are attached to the floor surface 12 such that a gap S3 exists between the inner tape 3 and the outer circumferential tapes 2A to 2F. As a result, even if water or the like infiltrates between the floor surface 12 and the floor sheet 4 laid on the floor surface 12, the infiltrated water will flow along the floor surface 12 and pass through the gaps S3 and S2 to the drain outlet. Guided by 13. Therefore, the infiltrated water can be smoothly flowed into the drain port 13 and drained. Further, it is preferable that the gap S3 is normally sealed with putty, and when water enters the inside, the pores are opened with a needle or the like to drain the water. By doing so, it is possible to prevent water from flowing into the interior from the gap S3 during normal use.

Further, according to the floor construction method and floor structure 1 of this embodiment, as shown in FIGS. 1 and 2, the inner tape 3 is slanted so that one end is closer to the drain port 13 than the other end. It is pasted on the floor surface 12 in a state facing. Thereby, even if water or the like intrudes between the floor surface 12 and the floor sheet 4 laid on the floor surface 12, the infiltrated water is smoothly guided to the drain port 13. Therefore, drainage of the infiltrated water can be promoted.

Although one embodiment of the present invention has been described above, the above embodiment is an illustration in all respects and is not restrictive, so the present invention is not limited to the above embodiment, and the present invention Various modifications are possible without departing from the spirit of the invention.

For example, as a variant, the inner tape 3 does not necessarily have to extend toward the drain 13, and may not necessarily extend toward the drain 13, as shown in FIG. In this modification as well, the outer circumferential tapes 2E and 2F are attached to the floor surface 12 so that a gap S2 exists at the boundary with the drain port 13, and the inner tape 3 is attached to both ends of the outer circumferential tapes 2A to 2F. By being attached to the floor surface 12 so that a gap S3 exists between them, even if water or the like intrudes between the floor surface 12 and the floor sheet 4 laid on the floor surface 12, the infiltrated water will be removed from the floor surface. 12 can be passed through the gap S3 and the gap S2 and led to the drain port 13. Therefore, the infiltrated water can be smoothly flowed into the drain port 13 and drained.

As another modification, all of the inner tapes 3 do not necessarily have to extend in the same direction, but some of them may face in the same direction and extend parallel to each other, as shown in FIGS. 7 and 8. and the remaining portions may extend parallel to each other and face the same direction. In the examples shown in FIGS. 5 and 6, the drain port 13 is located at the center of the side edge 12A of the floor surface 12, not at the corner, and the inner tape 3 is oriented in the vertical direction of the floor surface 12 between the back side and the front side. are different. In the example of FIG. 7, the inner tape 3 extends toward the drain 13, and in the example of FIG. 8, the inner tape 3 does not extend toward the drain 13. In either modification, the outer circumferential tapes 2E to 2G at the boundary with the drain port 13 are pasted on the floor surface 12 so that a gap exists at the boundary with the drain port 13, and the inner tape 3 is attached to both ends thereof. By being attached to the floor surface 12 so that there are gaps between the outer circumferential tapes 2A to 2G, even if water or the like infiltrates between the floor surface 12 and the floor sheet 4 laid on the floor surface 12, The infiltrated water can be guided to the drain port 13 by passing through the gap S3 and the gap S2 while being transmitted along the floor surface 12. Note that the example shown in FIG. 7 allows the infiltrated water to be guided to the drain port 13 more smoothly.

Although not shown, all of the inner tapes 3 may extend in different directions, for example, they may extend radially from the center of the floor surface 12 toward the outer periphery, and from the drain port 13 to the floor. They may extend radially toward the outer periphery of the surface 12.

As another modification, the floor surface 12 may not be adjacent to the drain port 13, such as the floor of a washroom or dressing room, and in that case, both ends of the inner tape 3 and the outer circumferential tape 2A It is not necessarily necessary to provide a gap S3 between the two. However, rather than overlapping both ends of the inner tape 3 with the outer circumferential tapes 2A to 2D, it is preferable to leave a gap S3 without overlapping both ends of the inner tape 3 with the outer circumferential tapes 2A to 2D.

As another modification, in addition to the double-sided tapes 2 and 3, adhesive may be additionally applied to the areas of the floor surface 12 where the double-sided tapes 2 and 3 are not present, and the floor sheet 4 may be laid on the floor surface 12. In addition, floor construction methods and floor constructions using adhesives are also within the scope of the present invention.

Examples of the present invention will be shown below. However, the present invention is not limited to the following examples.

A test was conducted on a floor surface on which a floor sheet was constructed using double-sided tape, to see if the floor sheet would lift off the floor surface when the floor sheet was squeezed by the movement of a chair, such as a bath chair.

Two types of bathroom floor sheets made of vinyl chloride resin (Basna Flore (registered trademark) and Basna Real Design (registered trademark) manufactured by Tori Co., Ltd.) were used as the floor sheets. A slate with a flat surface measuring 450 mm x 450 mm was used as a base, and a floor sheet was attached to the base using multiple double-sided tapes ("Basuna Tape" manufactured by Tori Co., Ltd.). The plurality of double-sided tapes are attached to the surface of the base so as to extend in parallel, perpendicular, and diagonal directions to the longitudinal direction of the base, and the distance between adjacent double-sided tapes (inner side (corresponding to the distance D between the tapes 3) was set to 100 mm, 150 mm, 200 mm, 250 mm, and 300 mm.

The movement of the bath chair was reproduced using a rubber mounting jig in which a rubber piece measuring 100 mm in width, 5 mm in length, and 5 mm in thickness when viewed from the side was attached to a metal plate. The rubber strips are attached to the lower ends of the legs of the bath chair and serve as a non-slip device. With the rubber piece of this rubber attachment jig in contact with the floor sheet, move it back and forth on the floor sheet at a speed of 90 mm/s over a width of 450 mm in the thickness direction of the rubber piece while applying a load of 25 kg. After the ingredients were moved back and forth three times, the presence or absence of lifting of the floor sheet was visually observed. The results are shown in Table 1. "Tape attachment direction" in the table means the tape attachment direction with respect to the reciprocating direction of the rubber attachment jig in plan view. ○, △, and × in the table represent the following. Note that the above-mentioned conditions are almost equivalent to the conditions when a person weighing 80 kg sits on a commercially available general bath chair.

○: No lifting was observed on the floor sheet. Δ: Slight lifting was observed on the floor sheet. ×: Clear lifting was observed on the floor sheet.

According to Table 1, by attaching the double-sided tape (inner tape 3 of the above embodiment) diagonally to the floor surface and attaching the floor sheet, the floor sheet receives external force caused by the movement of a bath chair, etc. It can be seen that it is possible to effectively suppress the floor sheet from lifting off the floor surface in some cases. Furthermore, it can be seen that since the distance between adjacent double-sided tapes attached diagonally is 250 mm or less, it is difficult for the floor sheet to rise from the floor surface.

In addition, in an example where the double-sided tape was attached diagonally to the floor surface, we visually observed whether the level difference in the floor surface caused by diagonally attaching the double-sided tape appeared on the surface side of the floor sheet. In all cases, no steps were observed on the surface of the floor sheets due to the tape, and the finish was clean. Furthermore, when the floor sheet was manually peeled off from the floor surface, it was confirmed that the floor sheet could be peeled off from the floor surface without any problems, without material damage.

1 Floor structure 2,2A-2G Perimeter tape (double-sided tape)
3 Inside tape (double-sided tape)
4 Floor sheet 12 Floor surface 13 Drain port

Claims (6)

Pasting process of pasting double-sided tape on the surface of the bathroom floor,
a laying step of laying a floor sheet on the surface of the floor via the double-sided tape,
The double-sided tape includes an outer tape and an inner tape,
In the pasting step, a plurality of the peripheral tapes are pasted in a row along the outer peripheral edge of the surface of the floor, and on the inside of the outer peripheral edge, a predetermined location where a faucet or shower is located above the outer peripheral edge. A floor construction method comprising: pasting a plurality of said inner tapes at intervals in at least a partial region in front of said predetermined location so as to face diagonally with respect to the front direction of said predetermined location. The surface of the floor has a substantially rectangular shape, and the predetermined location is located on one of four side edges constituting the outer peripheral edge of the floor surface, and the predetermined location is located at an angle with respect to a direction perpendicular to the side edge. 2. The floor construction method according to claim 1, wherein the inner tape is applied so as to face the inner tape. The floor is provided with a drainage hole,
The outer peripheral tape is attached so that at least one gap exists at the outer peripheral edge of the floor surface at the boundary with the drain port,
3. The floor construction method according to claim 1, wherein a gap exists between both ends of the inner tape and the outer circumferential tape. 4. The floor construction method according to claim 3, wherein the inner tape is oriented diagonally so that one end is closer to the drain port than the other end. bathroom floor and
double-sided tape affixed to the surface of the floor;
a floor sheet laid on the surface of the floor via the double-sided tape,
The double-sided tape includes a plurality of outer circumferential tapes that are attached in series along the outer circumferential edge of the surface of the floor, and a plurality of inner tapes that are attached at intervals from each other inside the outer circumferential edge,
The inner tape is affixed in at least a partial area in front of a predetermined location above which a faucet or shower is located on the outer peripheral edge of the surface of the floor, so as to face diagonally with respect to the front direction of the predetermined location. A floor structure characterized by: The floor is provided with a drainage hole,
The outer peripheral tape is attached so that at least one gap exists at the outer peripheral edge of the floor surface at the boundary with the drain port,
A gap exists between both ends of the inner tape and the outer circumferential tape,
6. The floor structure according to claim 5, wherein the inner tape is oriented diagonally so that one end is closer to the drain than the other end.

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