JP6775153B2 - Seat body - Google Patents

Description

The present invention relates to, for example, a sheet body used to be wound around pipes, electric wires, or the like inserted through a through hole of a fireproof compartment.

This kind of sheet body is described in Patent Document 1 below. Patent Document 1 describes a sheet body that is used by being wound around a long body (for example, pipes, electric wires, etc.) inserted through a through hole of a fireproof compartment. This sheet body is made of a heat-expandable material, and expands due to heat at the time of a fire to close the gap between the long body and the through hole, thereby preventing flames, toxic gas, etc. from flowing out to the adjacent chamber side.

This sheet body is constructed as follows, for example. That is, the operator wraps the sheet body around the portion of the long body inserted through the through hole that is separated from the through hole, and for example, attaches and fixes the adhesive tape to both ends of the sheet body. Subsequently, the operator slides the sheet body wound around the long body to a position corresponding to the through hole. After that, the worker fills the gap between the outer surface of the long body and the through hole with a filler such as mortar, non-combustible material, putty, etc., to complete the construction using the sheet body.

By the way, when attaching the sheet body to the long body, it is necessary for the operator to manually wind the sheet body around the long body and to attach adhesive tapes to both ends of the sheet body. Therefore, it is difficult to carry out the work of attaching the seat body to the long body.

JP-A-2002-167858

As described above, in the sheet body of Patent Document 1, it is difficult to carry out the work for attaching to the long body. In order to solve this problem, the following can be considered. That is, the sheet body is composed of a base material having an adhesive force applied to one surface and a release material provided on one surface of the base material so as to be peelable. Then, for example, the sheet body is wound around a long body with the release material peeled off by the area where both ends of the sheet body overlap each other, and both ends of the sheet body are used by peeling off the release material. Fix the parts together. On the other hand, the part other than both ends of the sheet body is left without peeling the release material, and the sheet body is slid to a position corresponding to the through hole. By doing so, it becomes easy to attach the seat body to the long body.

However, if the adhesive force applied to one surface of the base material is made uniform to the extent that the release material can be easily peeled off, it is difficult to peel off the release material by the required region, and the unnecessary region (described above). In the example, there is a risk of peeling up to the area where the release material needs to be left for the slide). Further, when the sheet body is stored or moved, the release material may be unexpectedly peeled off. Therefore, such a sheet body cannot meet the request to leave the necessary area without peeling off.

Therefore, an object of the present invention is to provide a sheet body capable of peeling a release material only in a required region from a base material.

The present invention is a sheet body comprising a base material having an adhesive surface having one surface having adhesiveness and a release material removably laminated on one surface of the base material. It is characterized in that a high adhesive force region and a low adhesive force region having different adhesive strengths are provided on the overlapping surface between the mold release material and the release material.

According to the sheet body of the present invention having the above configuration, when a part of the release material of the sheet body is peeled off from the base material in order to be attached to the adherend to be attached, compared with the low adhesive force region. Since the release material is less likely to be peeled off from the overlapping surface on the base material side by the amount of the high adhesive force region having high adhesive strength, it is possible to prevent the release material from being peeled off to an unnecessary region.

In the sheet body of the present invention, the entire area of the adhesive surface has a substantially uniform adhesive force, and the release-treated surface on which the release treatment is applied and the non-release-processed surface on which the release treatment is not applied to the release material. The release-treated surface may form the low adhesive force region, and the non-release-treated surface may form the high adhesive force region.

According to the sheet body having the above configuration, it is possible to prevent the release material from being peeled off to an unnecessary region, and the release-treated surface that has been subjected to the release treatment and the non-release-treated surface that has not been subjected to the release treatment. Since the release material has a structure of and, it can be manufactured at a lower cost than when a high adhesive force region and a low adhesive force region are applied to the adhesive surface of the base material.

The sheet body of the present invention can adopt a long strip-shaped structure having a predetermined width.

According to the sheet body having the above configuration, it is possible to cut the sheet body to a required length, and the sheet is made into a long body with the release material peeled off by the area where both ends in the longitudinal direction of the sheet body overlap each other. The body is wrapped and the adhesive surface exposed by peeling off the release material is used to adhesively fix both ends of the sheet body to each other, and the sheet body is wound around a long body, and the wound sheet body is the inner circumference thereof. Since the adhesive surface is not exposed on the surface, the sheet body can be slid in the longitudinal direction of the long body.

In the sheet body of the present invention, it is possible to adopt a configuration in which at least one end of both side ends in the width direction is the high adhesive force region over the longitudinal direction thereof.

According to the sheet body having the above configuration, when the width direction end portion is used as a trigger for peeling the mold release material, the width direction end portion is a high adhesive force region, so that an unnecessary region in the width direction end portion of the mold release material is formed. Is hard to peel off.

In the sheet body of the present invention, the protruding portion protruding outward in the width direction with respect to the base material over the longitudinal direction at the end portion of the release material on both sides in the width direction, which is the high adhesive region. Can be adopted.

According to the sheet body having the above configuration, since the protruding portion protrudes outward in the width direction with respect to the base material, it is easy to grip with fingers, and by gripping the protruding portion with fingers, even if there is a high adhesive force region. , It is easy to start peeling of the release material from the base material.

In the sheet body of the present invention, as the cutting portion of the release material, a configuration in which a fragile portion capable of cutting the release material along the width direction of the release material is formed can be adopted.

According to the sheet body having the above configuration, the release material can be easily cut by the fragile portion, and the release material is wound around the long body with the release material peeled off by the area where both ends of the sheet body overlap each other. Both ends of the sheet body are adhesively fixed to each other using the adhesive surface exposed by peeling, and the sheet body can be wound around the long body.

According to the sheet body of the present invention, the release material can be peeled off from the base material only in a necessary region.

Representing the sheet body according to the embodiment of the present invention, (a) is a plan view of a winding member for a long body formed by winding the sheet body in a roll shape, and (b) is a winding member for a long body. It is a side view of a sheet body which was cut into a strip shape by cutting a predetermined length, and (c) is a side view which shows the process of cutting the cut part of the mold release material in the sheet body of (b). (D) is a side view showing a state in which a part of the adhesive surface of the base material is exposed after the cut portion is cut. It is explanatory drawing which shows the process of winding the sheet body around a pipe, and (a) is a plan view of the state which wound the sheet body around a pipe, and superposed one end part in the longitudinal direction and the other end part in a longitudinal direction of a sheet body. Yes, (b) is a plan view of a state in which the release material at one end of the sheet body is cut and removed, and (c) is an adhesive surface exposed by removing the release material other than the sheet body. It is a top view of the state which overlapped with the end part. The usage state of the sheet body is shown, (a) is a vertical cross-sectional view of a state in which a pipe around which the sheet body is wound is inserted through through holes formed in a pair of walls, and (b) is (a). It is sectional drawing of AA in FIG. It is explanatory drawing which shows another process which winds the sheet body around a pipe, (a) is the plane in the state which wound the sheet body around a pipe, and overlapped one end part in a longitudinal direction and the other end part in a longitudinal direction of a sheet body. It is a figure, (b) is a plan view of the state which cut and removed the mold release material at one end part of a sheet body, (c) is a sheet body, the adhesive surface exposed by removing a mold release material. It is a top view of the state which overlapped with the other end of. It is a sheet body according to another embodiment, and represents different forms of the sheet body (a), (b), (c), (d), and (e). It is a sheet body according to another embodiment, and represents a mode in which a high adhesive force region extending in the longitudinal direction is not arranged along the width direction of the sheet body. It is a sheet body according to another embodiment, and is an exploded perspective view of the sheet body. It is a partially broken side view showing the middle of attachment to the adherend. It is a partially broken side view which showed the attachment state to the adherend.

Hereinafter, a sheet body according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1A, the sheet body S according to the embodiment of the present invention is wound for a long body, which is formed by winding a long strip-shaped sheet body S in a roll shape. Treated as member 1. The sheet body S includes a base material 3 which is flexible and has adhesiveness (adhesive strength is imparted) to at least one side, and a mold release material 4 which is detachably held on one side of the base material 3. There is. This adhesive strength is set uniformly over the entire surface of one side.

As shown in the enlarged view of FIG. 1 (b), the base material 3 is a heat-shielding aluminum sheet 5 made of an aluminum foil and one of the aluminum sheets 5 (on the left side in the enlarged view of FIG. 1 (b)). It is composed of a heat-expandable sheet 6 integrated with the surface 5A. The aluminum sheet 5 is formed by laminating various synthetic resin films on one or both sides of the aluminum foil. The heat-expandable sheet 6 and the aluminum sheet 5 are formed to have the same size.

The heat-expandable sheet 6 is formed in a band shape from a heat-expandable graphite-containing resin that can be expanded so as to close the entire through hole 7A of the wall 7 by heat at the time of a fire. The heat-expandable sheet 6 contains butyl rubber having adhesiveness at room temperature as a resin component, thereby imparting adhesiveness to the surface. The aluminum sheet 5 is fixed to one surface 6B by the adhesive force of the heat-expandable sheet 6. The release material 4 can be peeled off from the adhesive surface 6A which is the other surface of the thermal expandable sheet 6 (the surface opposite to the surface to which the aluminum sheet 5 is adhered) by the adhesive force of the thermal expandable sheet 6. It is held.

The release material 4 is formed of a synthetic resin film. Examples of the synthetic resin constituting this film include polyethylene. The dimension in the width direction of the release material 4 is set to be larger than the dimension in the width direction of the base material 3, and protrudes outward from one end of the base material 3. This protruding portion is formed over the entire length direction of the sheet body S, and is a protruding portion 4A that protrudes outward in the width direction with respect to the base material 3. The amount of protrusion of the protruding portion 4A with respect to the base material 3 is uniform over the longitudinal direction. The protruding portion 4A of the release material 4 is rolled up together with the base material 3 in a state where the sheet body S is a long body winding member 1.

The sheet body S is provided with a high adhesive force region 10 and a low adhesive force region 11 having different adhesive strengths on an overlapping surface in which the base material 3 and the release material 4 are stacked by adhesive strength. Specifically, since the adhesive force on the surface of the heat-expandable sheet 6 is set uniformly over the surface direction as described above, the high adhesive force region 10 and the low adhesive force region 11 having different adhesive strengths are By processing the mating surface of the release material 4 with the heat-expandable sheet 6. That is, the mating surface of the release material 4 with the heat-expandable sheet 6 is provided with a release-treated surface that has been subjected to a mold release treatment and a non-release-treated surface that has not been subjected to a mold release treatment. The mold release treatment is formed by transferring, applying, or spraying a mold release agent such as silicone or fluororesin to a predetermined region on the back surface of the mold release material 4.

In the overlapping surface, the region corresponding to the mold release processed surface is the low adhesive force region 11, and the region corresponding to the non-release processed surface is the high adhesive force region 10. It is difficult to visually confirm the low adhesive force region 11 and the high adhesive force region 10 on the overlapping surface.

In the sheet body S of the present embodiment, on the mating surface, at least one end of both side ends in the width direction is a high adhesive force region 10 over the longitudinal direction, and specifically, the width direction. The one-sided end portion and the other-sided end portion in the above are defined as the high adhesive force region 10 over the longitudinal direction thereof. In other words, in the overlapping surface, both side ends in the width direction of the mold release material 4 are non-release treated surfaces that have not been released in the longitudinal direction, and the region corresponding to the non-release processed surface is high. The adhesive strength region 10 is defined, and other than the high adhesive strength region 10, the mold release material 4 is a mold release-treated surface, and the region corresponding to the mold release-treated surface is a low adhesive strength region 11. There is. The high adhesive force region 10 is formed in a strip shape whose dimension in the width direction is remarkably smaller than the width of the sheet body S.

As described above, a pair of high adhesive force regions 10 are formed in parallel on both side ends in the width direction on the mating surfaces of the sheet body S, and the low adhesive force regions 11 are formed between the high adhesive force regions 10 in the sheet body S. It is formed over the entire longitudinal direction of the. In the width dimension of the high adhesive strength region 10 and the width dimension of the low adhesive strength region 11, the width dimension of the high adhesive strength region 10 is set small. In the mold release material 4, the protruding portion 4A may or may not be mold-released.

A fragile portion is formed in the release material 4. This fragile portion is formed at the edge portion of the protruding portion 4A, and is a cutting portion that makes it possible to easily cut the release material 4. As a fragile portion, a magic cut (registered trademark) along the width direction of the release material 4 is exemplified. The fragile portion is formed over the longitudinal direction of the release material 4. That is, the release material 4 can be cut along the width direction at an arbitrary longitudinal position by cutting the release material 4 at an arbitrary position in the longitudinal direction triggered by the fragile portion.

Here, the construction procedure of the fire prevention equipment in the fire prevention section area using the long body winding member 1 according to the present embodiment will be described. As the fire prevention equipment, as shown in FIGS. 3A and 3B, the pipe 2 has already been installed in the through holes 7A and 7A formed in the pair of walls 7 and 7 (fireproof compartments) in the fireproof compartment area. The construction procedure using the long body winding member 1 as the inserted state will be described. Construction of fire protection equipment
(1) A winding step of winding the sheet body S around the pipe 2 which is an adherend.
(2) A moving step of moving the sheet body S wound around the pipe 2 in the longitudinal direction of the pipe 2.
(3) Filling step using filler 8
To be equipped.

The winding process of (1) will be described. As a winding step, the operator unwinds the long body winding member 1 by a predetermined length L and cuts the sheet body S into a strip shape shown in FIG. 1 (b). This predetermined length L is set by the outer diameter dimension of the pipe 2. That is, as shown in FIG. 2A, the length L is determined so that both ends of the sheet body S in the longitudinal direction overlap each other.

Next, as shown in FIG. 1 (c), the operator picks and releases the protruding portion 4A protruding outward in the width direction (upper in FIG. 1 (c)) at one end portion 4T in the longitudinal direction of the release material 4. A part of the mold material 4 is peeled off from the heat-expandable sheet 6. When a part of the release material 4 is peeled off from the heat-expandable sheet 6, the adhesive surface 6A of the heat-expandable sheet 6 is exposed as shown in FIG. 1 (d). As shown in FIG. 2A, the peeling width of the target range for peeling the release material 4 is such that when the sheet body S is wound around the pipe 2, both ends of the sheet body S in the longitudinal direction are overlapped with each other in the longitudinal direction. For the area.

In the sheet body of the present embodiment, as described above, on the overlapping surface of the heat-expandable sheet 6 and the mold release material 4, both side ends in the width direction of the mold release material 4 are not released in the longitudinal direction. By being specified as a non-release treated surface, both end portions in the width direction are designated as a high adhesive force region 10 over the longitudinal direction thereof, and the regions other than the high adhesive force region 10 are designated as a low adhesive force region 11. That is, as described above, when the protruding portion 4A is picked and a part of the release material 4 is peeled from the heat-expandable sheet 6 by the region where both ends in the longitudinal direction of the sheet body S overlap each other, the release material 4 The starting portion of the peeling is the high adhesive force region 10. However, even if the release start portion of the release material 4 corresponds to the high adhesive force region 10, the operator can surely start the release of the release material 4 by picking the protruding portion 4A with his / her fingers.

When the peeling in the high adhesive force region 10 on the protruding portion 4A side is completed, the peeling in the low adhesive force region 11 is started. In the low adhesive force region 11, the release material 4 can be peeled off with a smaller force than in the high adhesive force region 10, but the release material 4 is not peeled off within a certain width and the cutting direction is different from the cutting direction up to that point. Easy to change. For example, it is conceivable that the cutting direction does not follow the width direction and the cutting is unexpectedly shifted in the longitudinal direction.

However, even if the cutting direction in the low adhesive force region 11 changes with respect to the cutting direction up to that point, when the cutting in the low adhesive strength region 11 is completed, the other end portion of the heat-expandable sheet 6 also also changes. Since the high adhesive force region 10 is formed over the longitudinal direction thereof, the unexpectedly changed cutting direction is corrected. Therefore, it is possible to suppress a state in which the release material 4 is peeled off with a width that greatly exceeds the target peeling width.

Next, the operator attaches the sheet body S in a state where a part of the release material 4 is peeled off from the heat-expandable sheet 6 to the pipe 2 as shown in FIGS. 2 (b) and 2 (c). Wrap it. In this case, first, as shown in FIG. 2B, the operator arranges the sheet body S so that the release material 4 faces the outer surface of the pipe 2 and winds it around the pipe 2. Then, as described above, the one end portion in the longitudinal direction on the side where the release material 4 is peeled off in the sheet body S overlaps the other end portion in the longitudinal direction radially outward, and both end portions in the longitudinal direction are overlapped with each other. And fix the exposed adhesive surface 6A to the radial outer surface of the other end in the longitudinal direction. By doing so, the sheet body S can be joined at the polymerization portion 1C (see FIG. 2C), and the sheet body S can be wound around the pipe 2. Then, by arranging the sheet body S so as to face the outer surface of the pipe 2 and winding it around the pipe 2, the adhesive surface 6A of the heat-expandable sheet 6 does not come into contact with the pipe 2, so that the sheet body S is wound around the pipe 2. The attached sheet body S can be moved in the longitudinal direction of the pipe 2. Such winding work of the sheet body S is performed at a portion separated from the through hole 7A in the longitudinal direction of the pipe 2.

In short, the winding step is a step of unwinding the sheet body S having a length L from the winding member 1 for a long body, and peeling the release material 4 at one end of the sheet body S in the longitudinal direction by a predetermined region. The process includes a step of winding the sheet body S around the pipe 2 with the release material 4 side as the inside and fixing the adhesive surface 6A to the radial outer surface of the other end in the longitudinal direction.

The moving process of (2) will be described. The moving step is a step of moving the sheet body S wound around the pipe 2 by the winding step along the longitudinal direction of the pipe 2 to a position corresponding to the through hole 7A. The release material 4 is made of a synthetic resin film. Therefore, the operator can easily move the seat body S. In the moving step, the sheet body S is moved so that the protruding portion 4A is located away from the through hole 7A (see FIG. 3A).

The filling step of (3) will be described. In the filling step, after the moving step, the gap between the outer surface of the pipe 2 and the through holes 7A and 7A is filled with a filler 8 such as mortar, non-combustible material, putty, or an elastic member to fill the gap. (See FIGS. 3 (a) and 3 (b)). In the moving step, since the sheet body S is moved so that the protruding portion 4A is located away from the through hole 7A, the protruding portion 4A of the release material 4 is exposed even after the gap is filled with the filler 8. Therefore, it can be grasped that the sheet body S is wound around the pipe 2.

This completes the construction of fire protection equipment. In this construction example, the heat-expandable sheet 6 expands due to the heat generated when a fire occurs and closes the through hole 7A, so that flames, toxic gas, and the like can be prevented from flowing out to the adjacent chamber side.

Further, in the winding step, the release material 4 on the one end side in the longitudinal direction of the sheet body S is peeled off in advance to expose the adhesive surface 6A, and the sheet body S is wound around the pipe 2 to adhere the adhesive surface 6A. The sheet body S is wound around the pipe 2 by fixing both ends of the sheet body S in the longitudinal direction by force. Therefore, when winding the sheet body S around the pipe 2, it is troublesome for the operator to attach and fix the adhesive tape between both ends of the sheet body S in the longitudinal direction while the sheet body S is wound around the pipe 2. No work is required.

In the sheet body S in the present embodiment, since the release processing region and the non-release treatment region are formed on the release material 4 side to form a high adhesive force region and a low adhesive force region, the base material 3 side is high. It can be manufactured at a lower cost than when the adhesive force region and the low adhesive strength region are processed.

The sheet body S in this embodiment has a high adhesive force region 10. Therefore, the release material 4 is less likely to be peeled off than when the sheet body S has only the low adhesive force region 11. Therefore, even if an external force that peels off the release material 4 acts when handling the long body winding member 1, the high adhesive force region 10 can prevent the release material 4 from being unexpectedly peeled off. ..

FIG. 4 (a), (b), and (c) show another example in which the sheet body S is wound around the pipe 2 as an adherend. This is a mounting method in which the sheet body S is arranged so that the aluminum sheet 5 faces the outer surface of the pipe 2 (so that the aluminum sheet 5 is located on the innermost side), and the sheet body S is wound around the pipe 2. .. In this embodiment, as shown in FIG. 4B, after removing the longitudinal end 4T of the mold release material 4, the sheet is separated from the pipe 2 with the longitudinal end 1B of the sheet body S. The longitudinal end 1A of the body S is pressed against the outer surface of the pipe 2, and the longitudinal other end 1B separated from the pipe 2 is overlapped with the radial outer surface of the longitudinal end 1A in the pressed state. The inner side surface of the other end portion 1B in the longitudinal direction is pressed against the adhesive surface 6A exposed at the one end portion 1A in the longitudinal direction. As a result, as shown in FIG. 4C, the other end portion 1B in the longitudinal direction is joined to the one end portion 1A in the longitudinal direction of the sheet body S.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention. For example, in the above embodiment, the protruding portion 4A is formed on the release material 4, but the protruding portion 4A is excellent in that it can easily trigger cutting (peeling) of the release material 4, but in the present invention, the presence or absence of the protruding portion 4A is present. Is not particularly limited.

Alternatively, the case where the protruding portion 4A is formed over the longitudinal direction of the sheet body S is illustrated. However, it is also possible to form a protruding portion 4A that protrudes outward in the width direction only at an arbitrary position in the longitudinal direction. Further, the protruding portions 4A can be formed on both sides of the release material 4 in the width direction.

In addition, for ease of cutting, instead of the magic cut (registered trademark) applied to the protruding portion 4A, a sewing machine with a V-shaped, U-shaped or I-shaped notch or a large number of small holes. The eye-shaped cut portion can be adopted as a fragile portion. It is conceivable that such a fragile portion is formed not only in the protruding portion 4A but also in the width direction of the release material 4.

In each of the above embodiments, a case where a heat-expandable sheet 6 effective in the event of a fire in the fire-prevention section region is used as the base material 3 of the sheet body S has been illustrated. However, the heat-expandable sheet 6 is changed depending on the purpose of use, such as a sound insulation sheet for sound insulation, a heat insulation sheet for heat insulation, a vibration isolation sheet for suppressing vibration, a display sheet for displaying a mark, and the like. it can. The aluminum sheet 5 can also be made of another material depending on the purpose of use, like the heat-expandable sheet 6.

In the above embodiment, the case where the base material 3 is composed of two members is illustrated. However, the base material 3 may be composed of one member or may be composed of three or more members. The constituent members of the base material 3 can be changed according to the purpose of use.

In the above embodiment, the member (heat expandable sheet 6) itself constituting the base material 3 is configured to have adhesiveness. However, it is also possible to apply an adhesive to the heat-expandable sheet 6 to impart adhesive strength.

Other embodiments of the sheet body S will be described. In the sheet body S in the above embodiment, the case where one end portion and the other side end portion in the width direction are set as the high adhesive force region 10 in the longitudinal direction of the mating surface is illustrated. However, in the sheet body S of the present invention, only one end of both side ends in the width direction may be a high adhesive force region over the longitudinal direction thereof. For example, a high adhesive force region can be provided only on one end of the protruding portion 4A, and the other region can be a low adhesive strength region. Alternatively, a high adhesive force region can be provided only at the other end, and the other region can be a low adhesive force region. In any case, by providing the high adhesive force region, it is possible to prevent the cut region of the release material from becoming unexpectedly large.

The shape and position of the high adhesive strength region are not particularly limited, and the shape and position thereof shall be as shown in FIGS. 5 (a), (b), (c), (d), (e), and FIG. You can also. In these figures, the shaded portion is the high adhesive strength region 10, and the other portion is the low adhesive strength region 11.

In each of the patterns shown in FIG. 5, the high adhesive force region 10 is always arranged in the direction along the width direction of the sheet body S. In FIG. 5A, a dodd-shaped first high adhesive force region 10 is densely provided on the width direction end side, and the first high adhesive force region 10 is located between the first high adhesive force regions 10 on the side away from the width direction end. A dodd-shaped second high adhesive force region 10 that is coarsely arranged as compared with the region 10 is provided. Such a first high adhesive force region 10 and a second high adhesive force region 10 may be provided only on one side in the width direction of the sheet body S, or are targeted around the center line (dashed line) shown in the figure. It can also be placed in a position.

In the example shown in FIG. 5B, a band-shaped high adhesive force region 10 extending in the longitudinal direction of the sheet body S is provided at the center position in the width direction of the sheet body S. The high adhesive force region 10 may be displaced from the center position in the width direction of the sheet body S to one side in the width direction or the other side in the width direction. Further, a plurality of high adhesive force regions 10 may be provided so as to be separated from each other in the width direction.

In the example shown in FIG. 5C, one side in the width direction is defined as the high adhesive force region 10 and the other side in the width direction is defined as the low adhesive force region 11 with the center position in the width direction of the sheet body S as a boundary. In the example shown in FIG. 5D, a high adhesive force region 10 separated in the longitudinal direction and separated in the width direction is provided on the center side in the width direction of the sheet body S.

In the example shown in FIG. 5 (e), the edge portion is a frame-shaped high adhesive force region 10 and the inner side of the high adhesive force region 10 is a low adhesive force region 11 for each section used for cutting. There is.

As described above, in the pattern shown in FIG. 5, the high adhesive force region 10 is always arranged in the direction along the width direction of the sheet body S. On the other hand, in the example shown in FIG. 6, the high adhesive force region 10 extending in the longitudinal direction along the width direction of the sheet body S is not necessarily arranged. That is, strip-shaped high adhesive force regions 10 and low adhesive force regions 11 along the width direction are alternately provided over the longitudinal direction.

In this example, depending on the position where the release material is cut along the width direction, there may be a case where only the low adhesive force region 11 is present. However, since the high adhesive force regions 10 are adjacent to each other on both sides of the low adhesive force region 11 in the longitudinal direction, it is possible to prevent the release material from being cut in an unexpected direction.

In each of the above embodiments, a case where a long sheet body S formed in a strip shape is wound into a roll shape to form a long body winding member 1 and cut by a required length is illustrated. However, the sheet body S is not limited to the pipe 2, and if it has a length and width necessary for use in the adherend, it does not need to be long until it is rolled. Further, the sheet body S is not limited to a rectangular shape, and can be formed into a different shape depending on the adherend or the adhered place. For example, a triangular shape or a circular shape can be considered.

In each of the above embodiments, the adhesive force on the heat-expandable sheet 6 side is made uniform, and a mold release processing region and a non-release treatment region are formed on the release material 4 side, whereby a high adhesive force region is formed on the mating surface of the sheet body. And the case where the low adhesive force region is constructed is illustrated. However, in the sheet body of the present invention, the entire surface of the mating surfaces of the mold release material 4 is subjected to a mold release treatment, an adhesive force is imparted to the mating surfaces of the base material, and the height of the adhesive force is partially imparted. A high adhesive force region and a low adhesive force region can also be formed on the mating surfaces of the sheet bodies.

Examples of such an embodiment include the sheet body S shown in FIGS. 7 to 9 or a construction example. The sheet body S is a gap closing body for closing the gap between the through hole 7A and the pipe 2 as a pipe 2 in which the adherend is inserted into the wall 7 (ceiling wall) and the through hole 7A formed in the wall 7. Used as.

As shown in FIG. 7, the sheet body S includes a base material 3 having adhesive strength on substantially the entire surface of one side surface, and a mold release material 4 detachably attached to the entire surface of one side surface of the base material 3. It is a laminated body. The base material 3 is provided with a plurality of flaps 15A (see FIGS. 8 and 9) provided on the outer peripheral surface of the pipe 2 by forming a cut line portion L1 and a wall. A pre-attached portion 16 to be affixed to the wall surface of 7 in advance, and a pre-attached portion 16 other than the pre-attached portion 16 and including the flap planned portion 15 are attached to the wall surface after being attached to the wall surface. A subsequent attachment portion 17 to be attached is provided.

In the base material 3, the adhesive force of the subsequent adhesive portion 17 is set to be high and the adhesive strength of the preceding adhesive portion 16 is set to be low between the preceding adhesive portion 16 and the subsequent adhesive portion 17.

The release material 4 has a first peeling portion 21 and a first peeling portion that are attached to the preceding attachment portion 16 by a release line portion 18 formed at the boundary between the preceding attachment portion 16 and the subsequent attachment portion 17. It includes a second peeling portion 22 that is separated from the 21 and attached to the subsequent attaching portion 17. The entire surface of the mold release material 4 is mold-released.

In the sheet body S (gap closing body) in this embodiment, one side surface thereof is stacked so as to hit the wall surface of the wall 7 via the mold release material 4, and the flap planned portion 15 is applied to the outer peripheral surface of the pipe 2. As shown in FIG. 8, the planned flap portion 15 is folded along the outer peripheral surface of the pipe 2 to form the flap 15A, and the portion corresponding to the preceding attachment portion 16 of the base material 3 is peeled off from the subsequent attachment portion 17. Fold it away from the wall 7 at the position of the line portion 18. Then, the first peeling portion 21 of the mold release material 4 is peeled off from the preceding sticking portion 16, the preceding sticking portion 16 is returned to the wall 7, and the preceding sticking portion 16 is attached to the wall surface of the wall 7 by the adhesive force thereof. To do. By doing so, the base material 3 is fixed to the wall surface and the base material 3 is positioned.

Subsequently, the subsequent attachment portion 17 of the base material 3 is folded with respect to the preceding attachment portion 16 at the release line portion 18 in a direction away from the wall 7, and the second release portion 22 of the release material 4 includes the flap 23. The flap 15A is peeled off from the subsequent attachment portion 17, and the flap 15A is attached to the outer peripheral surface of the pipe 2 by the adhesive force of the subsequent attachment portion 17, and the subsequent attachment portion 17 other than the flap 15A is attached to the wall surface. To do. In this way, the gap between the through hole 7A and the pipe 2 is closed in the state where the pipe 2 is inserted through the through hole 7A of the wall 7.

Since the subsequent attachment portion 17 can be attached to the outer peripheral surfaces of the wall 7 and the pipe 2 in the temporarily fixed state by the advance attachment portion 16, the sheet body S can be attached to the wall 7 and the pipe 2 at the time of installation. The position of S is unlikely to shift. After the gap is closed by the sheet body S, the filler 8 is filled in the gap.

In the embodiment shown in FIGS. 7 to 9, as described above, in the base material 3, the preceding attachment portion 16 and the subsequent attachment portion 17 have a high adhesive force of the subsequent attachment portion 17 and the preceding attachment portion 17 is attached. The adhesive strength of 16 is set low. Therefore, the adhesive surface of the preceding adhesive portion 16 is the low adhesive force region 11, and the adhesive surface of the subsequent adhesive portion 17 is the high adhesive force region 10.

That is, since the portion to be attached to the wall surface in advance is easy to peel off from the wall surface, it is easy to adjust for positioning, and after positioning, it can be securely attached to the wall surface by the high adhesive force region 10 of the subsequent attachment portion 17. it can.

In each of the above embodiments, the case where the sheet body S has flexibility is illustrated. However, the present invention can be applied even if the base material 3 of the sheet body S is made of a material to which special flexibility is not imparted, for example, a plate-shaped member made of a hard resin, a thin metal plate, or the like. Is. In each of the above embodiments, the pipe 2 made of synthetic resin is mentioned as the long body, but the pipe 2 is not limited to the pipe 2, and an electric wire or an electric cable formed by covering a plurality of electric wires is used as an adherend. can do.

1 ... Winding member for long body, 1A ... One end in the longitudinal direction, 1B ... The other end in the longitudinal direction, 1C ... Overlapping part, 2 ... Piping, 3 ... Base material, 4 ... Mold release material, 4A ... Overhang part, 4T ... One end in the longitudinal direction, 6 ... Thermal expansion sheet, 6A ... Adhesive surface, 7 ... Wall, 7A ... Through hole, 8 ... Filler, 10 ... High adhesive force region, 11 ... Low adhesive force region, S ... Sheet body

Claims (9)

One surface comprising a substrate having an inflatable thermal expansion sheet by being an adhesive surface heat having adhesiveness, and a releasing member superimposed peelably on one surface of the intumescent sheet A sheet body characterized in that a high adhesive force region and a low adhesive force region having different adhesive strengths are provided on an overlapping surface of the heat-expandable sheet and the mold release material. The entire area of the adhesive surface has substantially uniform adhesive strength.
The release material is provided with a release-treated surface that has been subjected to a release treatment and a non-release-treated surface that has not been subjected to a release treatment.
The sheet body according to claim 1, wherein the release-treated surface constitutes the low adhesive force region, and the non-release-treated surface constitutes the high adhesive force region. The sheet body according to claim 1 or 2, which is formed into a long strip having a predetermined width. The sheet body according to claim 3, wherein at least one end of both side ends in the width direction is the high adhesive force region over the longitudinal direction thereof. Of the ends on both sides in the width direction of the mold release material, the end portion of the highly adhesive region is formed with a protruding portion protruding outward in the width direction with respect to the heat-expandable sheet in the longitudinal direction thereof. The sheet body according to claim 4. The sheet body according to any one of claims 3 to 5, wherein a fragile portion capable of cutting the mold release material is formed as a cut portion thereof along the width direction of the mold release material. It is provided with a base material having one surface as an adhesive surface having adhesiveness and a release material which is releasably laminated on one surface of the base material, and is formed into a long strip having a predetermined width. The overlapping surface of the base material and the release material is provided with a high adhesive force region and a low adhesive force region having different adhesive strengths, and at least one end of both side ends in the width direction extends over the longitudinal direction thereof. The sheet body having the high adhesive strength region.
Of the end portions on both sides in the width direction of the mold release material, the end portion formed as the high adhesive region has a protruding portion that protrudes outward in the width direction with respect to the base material in the longitudinal direction. A seat body characterized by. The entire area of the adhesive surface has substantially uniform adhesive strength.
The release material is provided with a release-treated surface that has been subjected to a release treatment and a non-release-treated surface that has not been subjected to a release treatment.
The sheet body according to claim 7, wherein the release-treated surface constitutes the low adhesive force region, and the non-release-treated surface constitutes the high adhesive force region. The sheet body according to claim 7 or 8, wherein a fragile portion capable of cutting the mold release material is formed as a cut portion thereof along the width direction of the mold release material.

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