JP2020089541A - Fixing member - Google Patents

Abstract

To provide a fixing member capable of easily dissolving a folded state.SOLUTION: A fixing member according to one embodiment comprises a first belt part, a second belt part and a third belt part each extending along a first direction, the first belt part, the second belt part and the third belt part are folded along a second direction crossing the first direction and are set to a laminated condition in which these belt parts are laminated. The fixing member comprises a first coupling part and a second coupling part each maintaining the laminated condition. The first belt part and the second belt part are folded at a first folding part which is at one side in the first direction and are coupled so as to be separated freely through the first coupling part, and the second belt part and the third belt part are folded at a second folding part provided at the other side in the first direction, the first belt part comprises a composition of force-inhibition part inhibiting composition of coupling forces of the first coupling part and the second coupling part.SELECTED DRAWING: Figure 1

Description

One aspect of the present invention relates to a fixing member, and a hygiene article and an absorbent article including the fixing member.

Conventionally, a fixing member used for collecting target articles has been known. For example, Patent Document 1 listed below discloses a composite adhesive tape including three tapes, a first tape, a second tape, and a third tape. In this composite adhesive tape, the first tape and the second tape, and the second tape and the third tape are adhered at their ends along the longitudinal direction. As a result, the first tape, the second tape, and the third tape are integrated. The cross section perpendicular to the longitudinal direction of the composite adhesive tape is folded to have a Z shape. Specifically, the first tape corresponds to the Z-shaped horizontal first image, the second tape corresponds to the diagonal second image, and the third tape corresponds to the horizontal third image. The third tape is united.

When the composite adhesive tape is used, first, the third tape is fixed to the target article, and then the folded states of the first to third tapes are eliminated. Subsequently, the target articles are collected by winding the first to third tapes around the target articles. Then, the adhesive provided on the first to third tapes is attached to the target article to maintain the target article in a gathered state.

Patent Publication No. 2636103

The procedure for canceling the folded state of the first to third tapes in the composite adhesive tape is as follows. First, the user grips the free end of the first tape and moves the first tape along the first circumferential direction with the folded end of the second tape as a fulcrum. As a result, the first tape is separated from the second tape. Then, the user moves the first tape and the second tape along the second circumferential direction opposite to the first circumferential direction with the folded end of the third tape as a fulcrum. As a result, the second tape is peeled off from the third tape, so that the folded states of the first to third tapes are eliminated.

After moving the first tape along the first circumferential direction, the procedure for moving the first tape and the second tape along the second circumferential direction is performed by a user who has never used the composite adhesive tape. Complicated for. Therefore, there is a demand for a mode in which the folded state can be eliminated by a procedure that is simpler than the above procedure.

A fixing member according to one aspect of the present invention includes a first band portion, a second band portion, and a third band portion that extend along a first direction, and includes a first band portion, a second band portion, and a third band portion. The band portion is a fixing member that is folded along a second direction intersecting with the first direction and is set in a laminated state in which the first coupling portion and the second coupling portion maintain the laminated state. Prepare The first band portion and the second band portion are folded at a first bent portion located on one side in the first direction, and are separably coupled via a first coupling portion, The belt portion and the third belt portion are folded at the second bending portion located on the other side in the first direction, and the first belt portion has the coupling force of the first coupling portion and the coupling of the second coupling portion. It has a force synthesis inhibition part that inhibits the synthesis with force.

According to such a side surface, a tensile force (shearing force) along the first direction is applied to the end portion of the first band portion located on the opposite side of the first bent portion in the first direction. When the folding of the first band portion and the second band portion is canceled by, the synthesis of the binding force of the first coupling portion and the binding force of the second coupling portion is hindered by the force synthesis inhibiting portion. Thereby, for example, when the coupling between the first band portion and the second band portion in the first coupling portion is released by the shearing force, the influence of the second coupling portion can be reduced. That is, regarding the shearing force required to release the connection between the first band portion and the second band portion in the first joint portion, only the joint force of the first joint portion may be mainly considered. Therefore, the folded state of the first band portion and the second band portion can be eliminated with a lower force than in the case where the force synthesis inhibiting portion does not exist. In addition, after the folded state of the first band portion and the second band portion is released, the shearing force is continuously applied to the fixing member, so that the band portions in the second coupling portion can be also disconnected from each other. At this time, since the influence of the first joint portion can be excluded, the second joint portion can be removed with a lower force as compared with the case where the force synthesis inhibition portion does not exist. Therefore, by applying a force along the first direction to the fixing member, the folded state of the second band portion and the third band portion can be easily eliminated. Therefore, according to the above aspect, the folded state of the first to third band portions can be eliminated by a simplified procedure of simply applying a tensile force along the first direction to the fixing member.

According to one aspect of the present invention, it is possible to provide a fixing member that can easily cancel a folded state.

1A is a plan view of the fixing member according to the first embodiment, and FIG. 1B is a cross-sectional view taken along the line Ib-Ib of FIG. 2A is a diagram showing a state in which the fixing member shown in FIG. 1A is expanded, and FIG. 2B is a sectional view taken along line IIb-IIb in FIG. 2A. is there. FIG. 3 is a schematic sectional view showing a fixing member according to a comparative example. FIG. 4 is a diagram showing a fixing member according to a first modification of the first embodiment. FIG. 5: is a figure which shows the fixing member which concerns on the 2nd modification of 1st Embodiment. FIG. 6 is a schematic sectional view of a fixing member according to the second embodiment. FIG. 7 is a schematic sectional view of a fixing member according to a modified example of the second embodiment. FIG. 8A is a schematic sectional view showing a fixing member according to another example, and FIG. 8B is a schematic sectional view showing a fixing member according to another example. FIG. 9A is a schematic side view of the fixing member used in Example 1, and FIG. 9B is a schematic side view of the fixing member used in Example 6. FIG. 10( a) is a diagram showing the 90° peel strength measurement result of Example 1, and FIG. 10( b) is a diagram showing the shear strength measurement result of Example 1. FIG. 11( a) is a diagram showing the 90° peel strength measurement result of Comparative Example 1, and FIG. 11( b) is a diagram showing the shear strength measurement result of Comparative Example 1. FIG. 12( a) is a diagram showing the 90° peel strength measurement result of Comparative Example 2, and FIG. 12( b) is a diagram showing the shear strength measurement result of Comparative Example 2. 13A to 13D are views showing the results of measuring the shear strength of Examples 2 to 5, respectively. FIG. 14( a) is a diagram showing the 90° peel strength measurement result of Example 6, and FIG. 14( b) is a diagram showing the shear strength measurement result of Example 6. 15A to 15C are diagrams showing the 90° peel strength measurement results of Examples 7 to 9, respectively. 16(a) to 16(c) are diagrams showing the shear strength measurement results of Examples 7 to 9, respectively. 17A to 17D are diagrams showing the results of measuring the shear strength of Comparative Examples 3 to 6, respectively.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description. Further, the drawings are partially exaggerated for easy understanding, and the dimensional ratios and the like are not limited to those shown in the drawings.

The “fixing member” in the present specification means a member used to fix a fixed member. The member to be fixed may be an arbitrary article, and its kind, shape, size, number, etc. are not limited at all. Therefore, the purpose of use of the fixing member is not limited. Examples of the member to be fixed include absorbent articles such as disposable diapers, sanitary napkins, incontinence pads, and sanitary items such as hemostatic tape. The sanitary goods also include, for example, a hemostatic tape for stopping the bleeding of an affected part (for example, a wound, a wound, a puncture hole, etc.) of an organism such as a human. In this case, the fixing member has a structure for fixing the pad that abuts the affected area.

As an example, the fixing member is used to hold the shape of the fixed member that is made small by rolling, bending, winding, or the like. For example, the fixing member is used to hold the state of the absorbent article or hygiene article which is packaged in a small size. That is, the fixing member may be provided in an absorbent article, a sanitary article, or the like.

As another example, the fixing member may be used to fix the same or different fixed members to each other. For example, the fixing member may be used to attach or fix the absorbent article to clothes, or may be used to bundle a plurality of articles. That is, the fixed member is not limited to a single article. As still another example, the fixing member may be used to fix the first region and the second region of the fixed member. For example, the fixing member may be attached to a food bag and used as a sealing tape used for storing the food.

The fixing member includes a band base material having one or a plurality of band shapes. As used herein, the term "strip substrate" means an elongated plate-shaped, rod-shaped, or string-shaped substrate. In this specification, a direction orthogonal to the longitudinal direction X (first direction) of the band base material is defined as the width direction Y. A direction intersecting or orthogonal to the longitudinal direction X and the width direction Y is defined as a thickness direction Z (second direction). The longitudinal direction X may be paraphrased as a winding direction of the fixing member, a pulling direction of the fixing member, or a developing direction of the fixing member. The strip base material extends linearly along the longitudinal direction X. In a certain aspect, when the fixing member includes a plurality of strip base materials, the length (long side length) of each strip base material in the longitudinal direction X is 5 to 150 mm, 10 to 125 mm, or 15 to 100 mm. The length (short side length) of each strip base material in the width direction Y may be 2 to 30 mm, 3 to 25 mm, or 4 to 20 mm, and the thickness of each strip base material is 20 to 300 μm. , 30 to 250 μm, or 40 to 200 μm.

As used herein, the strip substrate comprises one or more strip portions. The band portion corresponds to any part of the band base material. For example, when the band base material is folded in two, the band base material may be considered to include one band part and the other band part, or may be considered to include three or more band parts. Good. Alternatively, even when the band base material does not have a bent portion or the like, a part of the band base material may be one band part and the other part of the band base material may be the other band part.

(First embodiment)
First, the configuration and structure of the fixing member according to the first embodiment will be described with reference to FIGS. 1 and 2. 1A is a plan view of the fixing member according to the first embodiment, and FIG. 1B is a cross-sectional view taken along the line Ib-Ib of FIG. 2A is a diagram showing a state in which the fixing member shown in FIG. 1A is expanded, and FIG. 2B is a sectional view taken along line IIb-IIb in FIG. 2A. is there.

As shown in FIGS. 1A and 1B, the fixing member 100 according to the first embodiment has a band shape in a plan view and a substantially Z-shaped cross section. The fixing member 100 includes a first band base material 1, a second band base material 2 and a third band base material 3 which are independent of each other and stacked. Specifically, the fixing member 100 has, in its cross section, a first strip base material 1 corresponding to the Z-shaped upper side, a second strip base material 2 corresponding to the Z-shaped inclined line, and a Z-shaped lower side. And a corresponding third band base material 3. Therefore, the fixing member 100 is formed by laminating the first band base material 1, the second band base material 2, and the third band base material 3 in this order. The long side length of the fixing member 100 is, for example, 15 mm or more and 100 mm or less.

The first strip base material 1 and the second strip base material 2 are folded at the first bent portion 5 located on one side in the longitudinal direction X. In the first embodiment, one end portion 2a of the second strip base material 2 is bent, and the one end portion 2a is joined to the one end portion 1a of the first strip base material 1. The second band base material 2 and the third band base material 3 are folded at the second bent portion 6 located on the other side in the longitudinal direction X. In the first embodiment, one end portion 3a of the third strip base material 3 is bent, and the one end portion 3a is joined to the other end portion 2b of the second strip base material 2.

Hereinafter, a state in which the first strip base material 1, the second strip base material 2, and the third strip base material 3 of the fixing member 100 are folded and stacked is defined as a “stacked state (folded state)”, The direction in which the first band base material 1, the second band base material 2, and the third band base material 3 are stacked is defined as the “stacking direction”. In the first embodiment, the stacking direction corresponds to the thickness direction Z (second direction). In addition, in the following description, each component of the fixing member 100 will be described on the assumption that the components are stacked, unless otherwise specified such as “when the fixing member 100 is expanded”.

The fixing member 100 includes the first coupling part 7 and the second coupling part 8 that maintain the stacked state. In the first embodiment, the first joining portion 7 is a portion that detachably joins the first band base material 1 and the second band base material 2 to each other. Similarly, the second joining portion 8 is a portion that detachably joins the second band base material 2 and the third band base material 3 to each other. Details of the first coupling part 7 and the second coupling part 8 will be described later.

In the fixing member 100, the first band base material 1, the second band base material 2, and the third band base material 3 can be developed by canceling the above-described bonding by the first bonding portion 7 and the second bonding portion 8. For example, while fixing the third strip base material 3, the other end portion 1b located on the opposite side of the one end portion 1a of the first strip base material 1 in the longitudinal direction X is pulled along the longitudinal direction X. That is, a tensile force (shearing force) along the longitudinal direction X is applied to the other end 1b. In the first embodiment, the shearing force corresponds to the force applied along the direction from the one end 1a to the other end 1b in the longitudinal direction X. Then, the first band base material 1 and the second band base material 2 are bonded via the first bonding part 7, and the second band base material 2 and the third band base material 3 are bonded via the second bonding part 8. The bond with and is canceled in order. At this time, the first bent portion 5 and the second bent portion 6 are also eliminated. As a result, as shown in FIGS. 2A and 2B, in the expanded fixing member 100, the first band base material 1, the second band base material 2, and the third band base material 3 are arranged in order. It exhibits a single strip shape. Hereinafter, a state in which the fixing member 100 has a single strip shape is defined as a “deployed state”. The fixing member 100 is wound around the member to be fixed in the expanded state and holds the shape of the member to be fixed.

When the above-mentioned connection in the first connecting portion 7 is released, shear failure occurs in the first connecting portion 7. In the first embodiment, the shear strength corresponding to the bonding force of the first bonding portion 7 is 0.5 N/10 mm or more and 11.5 N/10 mm or less. When the shear strength is 0.5 N/10 mm or more, the laminated state of the fixing member 100 when not in use can be favorably maintained. That is, it is possible to prevent the first strip base material 1 from unintentionally developing from the second strip base material 2. When the shear strength is 11.5 N/10 mm or less, the first band base material 1 can be detached from the second band base material 2 with an appropriate force. The lower limit of the shear strength is not limited to 0.5 N/10 mm, and may be 1.5 N/10 mm, for example. The upper limit of the shear strength is not limited to 11.5 N/10 mm, and may be 8.0 N/10 mm or 7.1 N/10 mm, for example.

Further, when the other end 1b of the first band base material 1 is pulled along the thickness direction Z, a 90° peeling force is applied to the first joint portion 7, so that the first joint portion 7 The bond between the band base 1 and the second band base 2 is released. In the first embodiment, the 90° peel strength of the first joint portion 7 is 0.5 N/10 mm or more and 4.5 N/10 mm or less. When the 90° peel strength is 0.5 N/10 mm or more, the laminated state of the fixing member 100 when not in use can be favorably maintained. When the 90° peel strength is 4.5 N/10 mm or less, the laminated state of the fixing member 100 can be favorably resolved with an appropriate force. The lower limit of the 90° peel strength is not limited to 0.5 N/10 mm, and may be, for example, 1 N/10 mm or 1.3 N/10 mm. Further, the upper limit of the 90° peel strength is not limited to 4.5 N/10 mm, and may be, for example, 1.8 N/10 mm or 1.7 N/10 mm.

A value obtained by dividing the shear strength of the first joint portion 7 by the 90° peel strength of the first joint portion 7 is, for example, 6.0 or less. In this case, the coupling force of the first coupling portion 7 is set within a favorable range. The upper limit of the above value is not limited to 6.0, and may be 8.21, 6.88, 3.89, or 2.7.

The shear strength is defined as a force applied when the end portion of the first strip base material 1 is pulled in the shear direction along the longitudinal direction X and the first joint portion 7 is released. This shearing direction is, for example, in FIG. 1B, along the longitudinal direction X, and is the direction from the one end 1a to the other end 1b. In the present specification, the shear strength can be measured as follows, for example. First, the 1st strip base material 1 and the 2nd strip base material 2 are processed, respectively, and a 25 mm x 75 mm 1st test piece and a 2nd test piece are produced. Next, the first test piece is attached to the second test piece so as to have the same form as that of the first connecting portion 7. At this time, at least the end portion (25 mm×10 mm) of the first test piece is set so as not to overlap with the second test piece. Next, a 25 mm×50 mm PET piece (thickness: 100 μm) is attached to the end portion of the first test piece to provide a sample having a linear shape. Next, the exposed surface of the second test piece in the sample (the surface of the second test piece located on the opposite side of the surface facing the first test piece) is attached and fixed to a 50 mm×100 mm stainless steel plate. Here, the long side of the stainless steel plate is arranged so as to extend along the direction of peeling the sample (peeling direction). Then, the shear strength is measured by pulling the sample in the long side direction (180 degree direction) of the stainless steel plate at a speed of 300 mm/min using a tensile tester or a device having equivalent performance. .. In the first embodiment, the shear strength is the average of the maximum values of the obtained measurement peaks. In this specification, since the unit of the shear strength is N/10 mm, the measured value is multiplied by 1/2.5 (2/5).

The 90° peel strength can be measured, for example, as follows based on JIS Z 0237:2009. First, the 1st strip base material 1 and the 2nd strip base material 2 are processed, respectively, and a 25 mm x 75 mm 1st test piece and a 2nd test piece are produced. Next, the first test piece is attached to the second test piece so as to have the same form as that of the first connecting portion 7. At this time, at least the end portion (25 mm×10 mm) of the first test piece is set so as not to overlap with the second test piece. Next, a sample having a linear shape is provided by sticking a piece of paper of 25 mm×210 mm to the end portion of the first test piece. Next, the exposed surface of the second test piece in the sample is attached and fixed to a stainless steel plate of 50 mm×100 mm. Here, the long side of the stainless steel plate is arranged so as to extend along the direction of peeling the sample (peeling direction). Then, the 90° peel strength is measured by peeling the first test piece of the sample from the second test piece under the condition of a speed of 300 mm/min using a tensile tester or a device having equivalent performance. To do. In the first embodiment, the 90° peel strength is an average value of the maximum values of the obtained measurement peaks. In the present specification, since the unit of 90° peel strength is N/10 mm, the measured value is multiplied by 1/2.5 (2/5). The 90° direction is, for example, in FIG. 1B, along the thickness direction Z, and is the direction from the third strip base material 3 toward the first strip base material 1.

Next, each component of the fixing member 100 will be described. The first band base material 1 is a portion that forms the outermost surface when the fixing member 100 is fixed to the fixed member in a laminated state. The first band base material 1 is a portion of the expanded fixing member 100, which is fixed to the fixed member and serves as one end in the longitudinal direction X. The first strip base material 1 includes a base material layer 11, an adhesive layer 12 (adhesive portion), and a tab 13. Here, an outline of the base material layer 11, the adhesive layer 12, and the tab 13 will be described.

The base material layer 11 has a surface 11a facing the second band base material 2 side (and the third band base material 3 side) and a surface 11b located on the opposite side of the surface 11a. An adhesive layer 12 and a tab 13 are provided on the surface 11a. In plan view, the long side length of the base material layer 11 is, for example, 5 mm or more and 150 mm or less, and the short side length of the base material layer 11 is, for example, 2 mm or more and 30 mm or less. The thickness of the base material layer 11 is, for example, 20 μm or more and 300 μm or less. The base material layer 11 is made of, for example, a resin film, paper, or non-woven fabric. When the base material layer 11 is a resin film, the resin forming the base material layer 11 is, for example, a polyolefin such as polyethylene or polypropylene. The resin may be a synthetic resin such as polyester, polyamide, polyurethane, or polyvinyl chloride.

The base material layer 11 includes an end portion 14 included in the one end portion 1 a of the first strip base material 1, an end portion 15 included in the other end portion 1 b of the first strip base material 1, and an end portion 14 in the longitudinal direction X. , 15 and a central portion 16 located between the two. A part of the end portion 14 overlaps the one end portion 2a of the second band base material 2 in the stacking direction. The other portion of the end portion 14 located on the one side in the longitudinal direction X with respect to the part does not overlap the one end portion 2a of the second band base material 2 in the stacking direction. On the other hand, the end portion 15 is located between the first bent portion 5 and the second bent portion 6 in the longitudinal direction X, and also in the thickness direction Z, the first bent portion 5 and the second bent portion 5. It is provided so as not to overlap the curved portion 6.

The central portion 16 is a main body portion connecting the end portions 14 and 15, and at least a part thereof is bent. Specifically, the central portion 16 is wavy. In the first embodiment, the central portion 16 undulates in a wavy manner, so that the central portion 16 has a base portion 16a that is detachably attached to the second band base material 2 via the adhesive layer 12, and a thickness direction Z. In, a bending portion 16b that bends away from the second band base 2 is provided. When the plurality of curved portions 16b are provided in the central portion 16, the base portions 16a and the curved portions 16b are alternately provided in the longitudinal direction X. A base 16a is connected to each of the ends 14 and 15.

In the first embodiment, the three base portions 16 a and the two curved portions 16 b are provided in the central portion 16. Each base portion 16a corresponds to a portion of the central portion 16 which is not bent. The length of each base 16a along the longitudinal direction X is, for example, 0.5 mm or more and 10 mm or less. Each curved portion 16b corresponds to a bent portion (slackened portion) in the central portion 16. At least a part of each curved portion 16 b is separated from the second band base material 2. The dimension of the curved portion 16b along the longitudinal direction X is, for example, 0 mm or more and 10 mm or less, and the dimension of the curved portion 16b along the thickness direction Z is, for example, 1 mm or more and 10 mm or less. The dimension of the curved portion 16b along the extending direction of the base material layer 11 is, for example, 2 mm or more and 20 mm or less. Therefore, in plan view, the dimension of the first strip base material 1 in the stacked state along the longitudinal direction X is 50% or less of the dimension of the first strip base material 1 in the developed state along the longitudinal direction X. The dimension of the curved portion 16b along the extending direction of the base material layer 11 corresponds to the dimension along the longitudinal direction X in the portion where the curved portion 16b is eliminated in the expanded state.

The adhesive layer 12 is a layer that maintains the laminated state of the fixing member 100. The adhesive layer 12 is detachably attached to a base material layer 21 (details will be described later) of the second belt base material 2, and the adhesive layer 22 (of the second belt base material 2 at the first bent portion 5). For details, see below). Therefore, when the fixing member 100 is in the stacked state, the first strip base material 1 and the second strip base material 2 are in close contact with each other, and these stacked states are maintained. Moreover, in the first embodiment, at least a part of the adhesive layer 12 functions as the first coupling portion 7. The adhesive layer 12 is selectively provided on the surface 11a of the base material layer 11. In the expanded fixing member 100, the adhesive layer 12 has a function of adhering the base material layer 11 and the fixed member. The thickness of the adhesive layer 12 is, for example, 5 μm or more and 100 μm or less. The adhesive layer 12 contains, for example, an adhesive. The adhesive is, for example, an acrylic adhesive, a rubber adhesive, a urethane adhesive, or a silicone adhesive.

The adhesive layer 12 includes a first portion 12a provided on the surface 11b of the base material layer 11 and overlapping the end portion 14 and a first portion 12a provided on the surface 11b of the base material layer 11 and overlapping the end portion 15. It has two portions 12b and a third portion 12c provided on the surface 11b of the base material layer 11 and overlapping the base portion 16a of the central portion 16. The adhesive layer 12 is not provided in the region overlapping the curved portion 16b of the central portion 16. The first portion 12 a is included in the first bent portion 5 and is bonded to the one end portion 2 a of the second band base material 2. The second portion 12b is bonded to the tab 13. The third portion 12c is provided on each base portion 16a and is detachably attached to the second band base material 2. Therefore, in the first embodiment, the third portion 12c corresponds to the first coupling portion 7. Further, since the central portion 16 is provided with the three base portions 16a, there are also three first coupling portions 7. The adhesive force of the third portion 12c corresponds to the shear strength and the 90° peel strength.

The tab 13 is a portion that serves as a knob (free end) when the fixing member 100 is expanded. The tab 13 is fixed to the other end portion 1b of the first band base material 1 via the adhesive layer 12. From the viewpoint of easily determining the position of the tab 13 on the fixing member 100, the tab 13 may be colored. In the longitudinal direction X, the tab 13 is exposed from the base material layer 11 by, for example, about 0.1 mm to 10 mm. The tab 13 is provided, for example, between the first bent portion 5 and the second bent portion 6 in the longitudinal direction X. The tab 13 may be provided so as not to overlap the first bent portion 5 and the second bent portion 6 in the stacking direction. The tab 13 is made of, for example, a resin film, paper, non-woven fabric, or the like. The tab 13 has a thickness of, for example, about 80 μm.

Next, the configuration of the second band base material 2 will be described. The second strip base material 2 is a portion of the fixing member 100 that connects the first strip base material 1 and the third strip base material 3, and the first strip base material 1 and the third strip base material 3 in the thickness direction Z. It is sandwiched between and. The second strip base material 2 has a base material layer 21 and an adhesive layer 22.

The base material layer 21 has a surface 21a facing the third strip base material 3 side and a surface 21b opposite to the surface 21a and facing the first strip base material 1 side. The adhesive layer 22 is provided on the surface 21a, and the first band base material 1 is located on the surface 21b. The third portion 12c of the adhesive layer 12 is detachably adhered to the surface 21b. When viewed from the stacking direction, the long side length of the base material layer 21 is 5 mm or more and 150 mm or less, and the short side length of the base material layer 21 is substantially the same as the base material layer 11. The thickness of the base material layer 21 is, for example, 20 μm or more and 300 μm or less. The base material layer 21 is made of, for example, a resin film, paper, or non-woven fabric. The resin forming the base material layer 21 is, for example, the same as the resin forming the base material layer 11.

The base material layer 21 has one end 23 in the longitudinal direction X and the other end 24 in the longitudinal direction X. The end portion 23 is included in the one end portion 2 a of the second band base material 2 and is covered with the first band base material 1. The end portion 23 is folded back toward the first band base material 1 side when the fixing member 100 is in the stacked state. Therefore, in the end portion 23, a part of the surface 21a faces the first band base material 1 side. The end portion 24 is included in the other end portion 2b of the second strip base material 2 and is exposed from the first strip base material 1 when viewed in the stacking direction. In other words, the end portion 24 is located outside the end portion 15 of the first band base material 1 in the longitudinal direction X. The tip of the end portion 24 in the longitudinal direction X is located outside the second bent portion 6. That is, the tip of the end portion 24 projects from the second bent portion 6.

The adhesive layer 22 is a layer that maintains the laminated state of the fixing member 100, like the adhesive layer 12. Therefore, in the first embodiment, at least a part of the adhesive layer 22 can function as the second joint portion 8. The adhesive layer 22 is detachably attached to a base material layer 31 (details will be described later) of the third strip base material 3, and at the second bent portion 6, the adhesive layer 32 ( For details, see below). Therefore, when the fixing member 100 is in the stacked state, the stacked state of the second strip base material 2 and the third strip base material 3 is maintained via the adhesive layer 32.

The portion of the adhesive layer 22 provided at the end portion 23 of the base material layer 21 is included in the one end portion 2 a of the second band base material 2. Further, a part of the adhesive layer 22 at the end portion 23 faces the first band base material 1 side and is directly adhered to the adhesive layer 12. Therefore, in the first bent portion 5, the one end portion 2a of the second strip base material 2 and the one end portion 1a of the first strip base material 1 are firmly adhered to each other by the adhesive layers 12 and 22. Therefore, when the fixing member 100 is developed, it is possible to favorably prevent the first band base material 1 and the second band base material 2 from being separated from each other at the first bent portion 5. The portion of the adhesive layer 22 provided at the end portion 24 of the base material layer 21 constitutes the other end portion 2b of the second band base material 2.

The adhesive force between the second band base material 2 and the third band base material 3 (that is, the bonding force or shear strength of the adhesive layer 22 that is the second bonding portion 8) is, for example, 0.1 N/10 mm or more and 5 N/10 mm or less. Is. When the adhesive force is 0.1 N/10 mm or more, it is possible to prevent the second band base material 2 from unintentionally spreading from the third band base material 3. When the adhesive force is 5 N/10 mm or less, the second band base material 2 can be detached from the third band base material 3 with an appropriate force. The thickness of the adhesive layer 22 is, for example, 5 μm or more and 100 μm or less. The adhesive layer 22 is formed by applying an adhesive or the like to the surface 21 a of the base material layer 21. The adhesive contained in the adhesive layer 22 is, for example, the same as the adhesive forming the adhesive layer 12.

The third band base material 3 is a portion of the fixing member 100 that is fixed to the fixed member in advance. In addition, the third band base material 3 is a portion that becomes the other end in the longitudinal direction X in the expanded fixing member 100. The third strip base material 3 has a base material layer 31 and an adhesive layer 32.

The base material layer 31 includes a surface 31a which is a surface opposite to the first belt base material 1 and a surface 31b which is the opposite side of the surface 31a and faces the second belt base material 2 side and the first belt base material 1 side. And have. The adhesive layer 32 is provided on the surface 31a. The second strip base material 2 and the first strip base material 1 are sequentially laminated on the surface 31b. At least a part of the adhesive layer 22 of the second band base material 2 is detachably adhered to the surface 31b. When viewed from the stacking direction, the long side length of the base material layer 31 is 5 mm or more and 150 mm or less, and the short side length of the base material layer 31 is 2 mm or more and 30 mm or less. The thickness of the base material layer 31 is, for example, 20 μm or more and 300 μm or less. The base material layer 31 is made of, for example, a resin film, paper, or non-woven fabric. The resin forming the base material layer 31 is, for example, the same as the resin forming the base material layers 11 and 21.

The base material layer 31 has one end 33 in the longitudinal direction X and the other end 34 in the longitudinal direction X. The end portion 33 is exposed from the first strip base material 1 and the third strip base material 3 when viewed in the stacking direction. The end portion 34 is a portion that constitutes the second bent portion 6, and is covered with the second band base material 2. When the fixing member 100 is in the stacked state, the end portion 34 is folded back toward the second band base material 2 side. Therefore, in the end portion 34, a part of the surface 31a faces the second band base material 2 side.

The adhesive layer 32 is a layer that adheres the base material layer 31 and the member to be fixed, and is located on the opposite side of the second band base material 2 with the base material layer 31 interposed therebetween. Therefore, the fixing member 100 is bonded to the fixed member via the adhesive layer 32. A part of the portion of the adhesive layer 32 provided on the end portion 34 of the base material layer 31 faces the second strip base material 2 side and is directly adhered to the adhesive layer 22. Therefore, in the second bent portion 6, the other end portion 2b of the second strip base material 2 and the one end portion 3a of the third strip base material 3 are firmly adhered to each other by the adhesive layers 22 and 32. Therefore, when the fixing member 100 is expanded, it is possible to favorably prevent the second band base material 2 and the third band base material 3 from being separated from each other at the second bent portion 6. The thickness of the adhesive layer 32 is, for example, 5 μm to 100 μm. The adhesive layer 32 is formed by applying an adhesive or the like on the surface 31 a of the base material layer 31. The adhesive contained in the adhesive layer 32 is, for example, the same as the adhesive forming the adhesive layers 12 and 22.

Next, the operation and effect of the fixing member 100 according to the first embodiment will be described with reference to FIG. FIG. 3 is a schematic sectional view showing a fixing member according to a comparative example. The first band base material 101 of the fixing member 200 shown in FIG. 3 includes a first base material layer 111, an adhesive layer 112 provided on the entire surface 111 a of the first base material layer 111, and a tab 13. .. In addition, in the fixing member 200 in the stacked state, the first base material layer 111 does not have any bending. Therefore, the central portion 116 of the first base material layer 111 is adhered to the base material layer 21 through the third portion 112c of the adhesive layer 112 without any gap. Therefore, the first coupling portion 107 of the fixing member 200 corresponds to one continuous third portion 112c. The third portion 112c is also continuous with the first portion 112a and the second portion 112b. Here, the first portion 112 a is integrated with the adhesive layer 22 of the second band base material 2. Therefore, in the comparative example, the adhesive layers 22 and 112 are regarded as one integrated adhesive layer.

In the above comparative example, when the fixing member 200 in the laminated state is developed by pulling the tab 13 along the longitudinal direction X, it is necessary to cause shear failure in the integrated adhesive layers 22 and 112. In other words, the shear strength of the adhesive layer 22 as well as the adhesive layer 112 must be considered. For this reason, the shear strength required to bring the fixing member 200 into the deployed state tends to be extremely high. In this case, it is difficult to deploy the fixing member 200 simply by pulling the tab 13 along the longitudinal direction X. In addition, any breakage of the fixing member 200, peeling of the fixing member 200 from the fixed member (that is, 90° peeling or shear fracture of the adhesive layer 32) occurs before the fixing member 200 is in the expanded state. There is also a risk. In order to prevent the occurrence of these problems, in the comparative example, the fixing member 200 is developed by the complicated method shown in, for example, the “problem to be solved by the invention”.

On the other hand, in the fixing member 100 according to the first embodiment, the central portion 16 of the base material layer 11 of the first band base material 1 is bent. Therefore, the central portion 16 is provided with the curved portion 16b. In addition, since the adhesive layer 12 is not provided on the curved portion 16b, the curved portion 16b is less likely to be affected by the adhesive layer 12.

When the folding of the first strip base material 1 and the second strip base material 2 is canceled by applying the shearing force along the longitudinal direction X to the tab 13 of the fixing member 100, first, the bonding is performed. A shear force is applied to the layer 12 and the adhesive layer 12 is sheared and broken. At this time, the shearing force concentrates on the third portion 12c of the adhesive layer 12 closest to the tab 13 in the longitudinal direction X, and the third portion 12c first undergoes shear failure. This phenomenon occurs due to the presence of the curved portion 16b. This is because the slack curved portion 16b becomes a play, so that the above-mentioned is formed in the subsequent stage (that is, the third portion 12c farther from the tab 13 than the third portion 12c and the adhesive layer 22) than the third portion 12c. This is because it becomes difficult to transmit the shearing force.

In addition, due to the presence of the curved portion 16b, the adhesive force of the third portion 12c closest to the tab 13 is the adhesive force of the third portion 12c farther from the tab 13 than the third portion 12c and the adhesive layer 22. Less affected by adhesive strength. Therefore, for example, the combination of the coupling force of the first coupling portion 7 and the coupling force of the second coupling portion 8 is hindered by the bending portion 16b. That is, the curved portion 16b is a slack portion or a slack portion, and functions as a force synthesis inhibiting portion that inhibits the synthesis of the above-described binding forces. By providing such a curved portion 16b on the first strip base material 1, for example, the first strip base material 1 and the second strip base material 2 in the third portion 12c which is the first coupling portion 7 due to the shearing force. When the coupling with and is released, the influence of the second coupling portion 8 can be reduced.

Furthermore, after the adhesion by the third portion 12c closest to the tab 13 is completely released, the shearing force is continuously applied to the tab 13. As a result, the bending of the curved portion 16b adjacent to the third portion 12c is eliminated. Then, by continuously applying the shearing force to the tab 13, the shearing force is applied to the other third portion 12c adjacent to the bending portion 16b. By repeating the elimination of the adhesion by the third portion 12c and the elimination of the bending of the bending portion 16b in this manner, the plurality of first coupling portions 7 are eliminated in order along the longitudinal direction X.

Therefore, according to the first embodiment, the shearing force required to release the bond between the first band base material 1 and the second band base material 2 in the first bonding portion 7 is mainly the bonding force of the first bonding portion 7. Should be considered. Therefore, the folded state of the first strip base material 1 and the second strip base material 2 can be eliminated with a shearing force lower than that of the comparative example.

In addition, after the folded state of the first strip base material 1 and the second strip base material 2 is released, the shearing force is continuously applied to the tabs 13 so that the second strip base material 2 in the second joint portion 8 is released. It is also possible to release the connection between the third band base material 3 and. At this time, since the influence of the first joint portion 7 can be eliminated, the second joint portion 8 can also be removed with a shearing force lower than that of the comparative example. Therefore, by applying a force along the longitudinal direction X to the fixing member 100, the folded state of the second strip base material 2 and the third strip base material 3 can be easily eliminated. Therefore, according to the first embodiment, the first band base material 1, the second band base material 2, and the third band base material 1 are formed by a simplified procedure of simply applying a pulling force to the fixing member 100 along the longitudinal direction X. The folded state of the band base material 3 can be eliminated.

Furthermore, when the fixing member 100 is in the unfolded state, the bending of the first band base material 1 caused by each curved portion 16b is eliminated. At this time, the dimension of the first strip base material 1 in the developed state along the longitudinal direction X is longer than the dimension of the first strip base material 1 in the stacked state along the longitudinal direction X. Therefore, according to the first embodiment, in plan view, it is possible to reduce the size of the fixing member 100 in the stacked state and increase the long side length of the fixing member 100 in the developed state.

Here, in the first embodiment, the shear strength of each first coupling portion 7 is set to, for example, 0.5 N/10 mm or more and 11.5 N/10 mm or less. As a result, as described above, only by applying the shearing force to the tab 13, the connection between the first band base material 1 and the second band base material 2 by the first bonding portion 7 can be easily eliminated. Therefore, the folded state of the first strip base material 1, the second strip base material 2, and the third strip base material 3 can be favorably eliminated by the above-described simplified procedure.

When the shear strength of each first joint portion 7 is set to 0.5 N/10 mm or more and 8.0 N/10 mm or less, the folded state can be resolved more favorably. Further, when the shear strength of each first joint portion 7 is set to 1.5 N/10 mm or more and 7.1 N/10 mm or less, the folded state can be resolved more favorably. In addition, the 90° peel strength of the first joint portion 7 is 0.5 N/10 mm or more and 4.5 N/10 mm or less, and the value obtained by dividing any of the shear strengths by the 90° peel strength is 6. When it is 9 or less, the laminated state of the fixing member 100 when not in use can be favorably maintained, and the folded state can be canceled very favorably.

Further, in the first embodiment, by providing the curved portion 16b on the first strip base material 1, the length of the first strip base material 1 in the stacked state along the longitudinal direction X can be reduced. Therefore, it is possible to extend the length of the fixing member 100 in the expanded state as compared with the comparative example. This makes it easy to wind the fixed member 100 around the fixed member in the expanded state. In addition, it is possible to improve the force for holding the shape of the fixed members that are put together.

In the first embodiment, at least a part of the bending portion 16b that functions as a force synthesis inhibiting portion is separated from the second band base material 2. Further, the curved portion 16b is bent. Therefore, the function of the bending portion 16b as the force synthesis inhibiting portion is exhibited well.

In the first embodiment, the first strip base material 1 has an adhesive layer 12 that corresponds to the first joint portion 7 and that is detachably attached to the second strip base material 2. In this case, by adjusting the content of the pressure-sensitive adhesive contained in the adhesive layer 12, changing the type of the pressure-sensitive adhesive, or the like, the bonding force of the first bonding portion 7 and the like can be easily determined.

In the first embodiment, the first band base material 1, the second band base material 2 and the third band base material 3 included in the fixing member 100 are independent of each other. In this case, the fixing member 100 can be easily formed.

FIG. 4 is a diagram showing a fixing member 100A according to a first modified example of the first embodiment. As shown in FIG. 4, the curved portion 16b included in the first band base material 1A is bent without a gap. In addition, the adhesive layer 12A of the first band base material 1A is provided not only in the portion other than the curved portion 16b but also in the thickness direction Z so as to overlap the curved portion 16b. In the first modification, the adhesive layer 12A is provided on the entire surface 11a of the base material layer 11 after the curved portion 16b is bent. Therefore, in the first modified example, the adhesive layer 12A has a continuous single layer shape, and the entire portion of the adhesive layer 12A that is bonded to the second band base material 2 functions as the first bonding portion 7A. Note that, as in the first embodiment, most of the curved portion 16b is not provided with the adhesive layer 12A. In particular, in the thickness direction Z, the adhesive layer 12A is not provided in the portion of the curved portion 16b located above the base portion 16a.

Even when a shearing force is applied to the tab 13 of the fixing member 100A according to the first modified example as described above, the same operational effect as that of the first embodiment tends to be exhibited. Therefore, the combination of the binding force of the first coupling portion 7A and the binding force of the second coupling portion 8 is hindered by the bending portion 16b that functions as a force synthesis inhibiting portion. Therefore, also in the first modified example, the folded state of the first strip base material 1A and the second strip base material 2 can be eliminated with a lower shearing force than in the comparative example.

Although the curved portion 16b extends in the thickness direction Z in FIG. 4, the invention is not limited to this. The curved portion 16b may be placed on the surface 11b of the base material layer 11 by being folded. In this case, the first band base material 1A is less likely to be caught by another member.

FIG. 5: is a figure which shows the fixing member 100B which concerns on the 2nd modification of 1st Embodiment. As shown in FIG. 5, the central portion 16A of the first band base material 1B is provided with a force synthesis inhibiting portion 41 instead of the curved portion. The force synthesis inhibiting portion 41 is a portion that impedes transmission of the shearing force to the subsequent stage when a shearing force is applied to the tab 13 along the longitudinal direction X, for example. The force synthesis inhibiting portion 41 is provided so as to be sandwiched by the base portion 16a in the central portion 16A. Similar to the first embodiment, the force synthesis inhibiting portion 41 is not provided with the adhesive layer 12. The above-mentioned "latter stage" indicates a position farther from the tab 13 than the force synthesis inhibiting portion 41 in the first band base material 1B, for example. In the central portion 16A, the force synthesis inhibiting portion 41 and the base portion 16a are integrated.

The force synthesis inhibiting unit 41 is, for example, a member exhibiting extensibility. In this case, the resin material forming the force synthesis inhibiting portion 41 contains an elastomer. The type of elastomer is not particularly limited and includes, for example, at least a styrene elastomer or an olefin elastomer. More specifically, as the elastomer, styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), styrene-ethylene/butylene-styrene block copolymer (SEBS), polyurethane, polyolefin (ethylene Examples thereof include copolymers (for example, ethylene vinyl acetate, ethylene-propylene copolymer, ethylene-propylene-diene terpolymer), polypropylene copolymer, polypropylene homopolymer and the like. Further, the resin material forming the stretchable base material layer may include an elastomer and other components. For example, the resin material is a stiffening agent (for example, polyvinyl styrene, polystyrene, poly α-methyl styrene, polyester, epoxy resin, polyolefin, coumarone-indene resin), a viscosity reducing agent, a plasticizer, a tackifier (for example, a fat. Group hydrocarbon tackifier, aromatic hydrocarbon tackifier, terpene resin tackifier, hydrogenated terpene resin tackifier), dye, pigment, antioxidant, antistatic agent, adhesive, tackifier, Slip agents, heat stabilizers, light stabilizers, foaming agents, glass bubbles, starch, metal salts, microfibers and the like may be included.

The load when the force synthesis inhibiting portion 41 is extended by 200% from the initial state along the longitudinal direction X is, for example, 30 N/25 mm or less. Since the load is 30 N/25 mm or less, for example, when a shearing force along the longitudinal direction X is applied to the tab 13, the force synthesis inhibiting unit 41 easily expands to function as the force synthesis inhibiting unit 41. Can be exhibited satisfactorily. In addition, the "member which shows extensibility" in this specification means the member which can be easily extended|stretched along the direction of the said tensile load, when a tensile load is given. For example, a member having an elongation rate of 100% or more when a tensile strength of 15 N/25 mm is applied is a member exhibiting extensibility. Here, a member having an elongation rate of 100% or more means that, when the tensile strength is given along a predetermined direction, the length of the member after the expansion along the predetermined direction is the length of the member before the expansion. It means a member that is more than doubled.

Even when a shearing force is applied to the tab 13 of the fixing member 100B according to the second modified example as described above, the same operational effects as those of the first embodiment and the first modified example tend to be exhibited. That is, the synthesis of the binding force of the first binding portion 7A and the binding force of the second binding portion 8 is blocked by the force synthesis inhibition portion 41. As a result, the folded state of the first strip base material 1B and the second strip base material 2 can be eliminated with a shearing force lower than that of the comparative example.

In FIG. 5, the force synthesis inhibiting unit 41 has a single layer structure, but is not limited to this. The force synthesis inhibiting unit 41 may have a multilayer structure. In this case, a part of the force synthesis inhibiting portion 41 may be the thinned base material layer 11.

(Second embodiment)
The fixing member according to the second embodiment will be described below. In the description of the second embodiment, description that overlaps with the first embodiment will be omitted, and only different parts from the first embodiment will be described. That is, the description of the first embodiment may be appropriately used for the second embodiment within the technically possible range.

FIG. 6 is a schematic sectional view of a fixing member according to the second embodiment. As shown in FIG. 6, the fixing member 100C according to the second embodiment includes a single folded band base 51. The strip base material 51 is made of a resin film, paper, or non-woven fabric, for example, like the base material layer 11 of the first embodiment. In the present embodiment, the band base material 51 is made of a non-woven fabric. In the unfolded state of the fixing member 100C, the length of the band base material 51 along the longitudinal direction X is, for example, 5 mm or more and 150 mm or less.

The strip base material 51 includes a first strip portion 52, a second strip portion 53 and a third strip portion 54 which are sequentially stacked in the thickness direction Z, an adhesive layer 55 provided on the first strip portion 52, and a second strip portion. The adhesive layer 56 provided on the portion 53, the adhesive layer 57 provided on the third strip portion 54, and the tab 13 fixed to the first strip portion 52 via the adhesive layer 55 are provided. The first strip portion 52, the second strip portion 53, and the third strip portion 54 are portions corresponding to the base material layers 11, 21, 31 in the first embodiment, respectively. The first band portion 52 and the second band portion 53 are connected by a bent portion 58 (bent portion) formed by bending a part of the belt base material 51. The second strip portion 53 and the third strip portion 54 are connected by a bent portion 59 formed by bending another part of the strip base material 51. Therefore, each of the bent portions 58 and 59 corresponds to the first bent portion 5 and the second bent portion 6 (see FIG. 1B) in the first embodiment.

At least a portion of the first band portion 52 is undulating. In the second embodiment, in the central portion 61 of the first strip portion 52, the base portion 62 that can be coupled to the second strip portion 53 via the adhesive layer 55 and the second strip portion 53 in the thickness direction Z are separated. And a bending portion 63 that bends in a vertical direction. The base portion 62 corresponds to the base portion 16a in the first embodiment, and the bending portion 63 corresponds to the bending portion 16b in the first embodiment. When the plurality of curved portions 63 are provided on the second band portion 53, the base portions 62 and the curved portions 63 are alternately provided in the longitudinal direction X. Similar to the first embodiment, the curved portion 63 is not provided with the adhesive layer 55.

The adhesive layer 55 is a layer that maintains the laminated state of the fixing member 100C, and is selectively provided on the first band portion 52. The adhesive layer 55 is detachably adhered to the second band portion 53. The adhesive layer 55 has a portion 55a that adheres to the tab 13 and a portion 55b that adheres to the second band portion 53. Since the adhesive layer 55 is not provided on the curved portion 63 as described above, the portion 55 a is provided on the base portion 62. Therefore, in the second embodiment, the portion 55b functions as the first joining portion 7 that detachably joins the first band portion 52 and the second band portion 53.

The adhesive layers 56 and 57 are layers corresponding to the adhesive layers 22 and 32 of the first embodiment, respectively. Therefore, the adhesive layer 56 is a layer that maintains the laminated state of the fixing member 100C, and functions as the second coupling portion 8 that separably couples the second band portion 53 and the third band portion 54. Further, the adhesive layer 57 functions as a layer for bonding the fixing member 100C and the fixed member.

Even when a shearing force is applied to the tab 13 of the fixing member 100C according to the second embodiment as described above, the same function and effect as those of the first embodiment can be obtained. That is, the combination of the binding force of the first coupling portion 7 and the binding force of the second coupling portion 8 is hindered by the bending portion 63 that functions as a force synthesis inhibition portion. As a result, the folded state of the first band portion 52 and the second band portion 53 can be eliminated with a shearing force lower than that of the comparative example.

FIG. 7 is a schematic sectional view of a fixing member 100D according to a modified example of the second embodiment. The fixing member 100D shown in FIG. 7 does not include an adhesive layer for maintaining the laminated state, but includes welding portions 71 and 72 provided on the band base material 51. Further, the fixing member 100D includes a hooking portion 73 that can be hooked on the member to be fixed. Therefore, the stacked state of the fixing member 100D is maintained by the welded portions 71 and 72.

The welded portion 71 is located on one side of the tab 13 in the longitudinal direction X and on the other side of the welded portion 72. In addition, in the present modification, the welded portion 71 is located on the other side of the hooking portion 73 in the longitudinal direction X. The welded portion 71 has a first region 71a that separably welds the first strip portion 52 and the second strip portion 53, and a second region 71a that separably welds the second strip portion 53 and the third strip portion 54. It has a region 71b. Therefore, the first region 71a included in the welded portion 71 corresponds to the first joining portion 7B that detachably joins the first band portion 52 and the second band portion 53. The second region 71b included in the welded portion 71 corresponds to the second joining portion 8A that detachably joins the second band portion 53 and the third band portion 54. The welded portion 71 is formed by, for example, an ultrasonic welding method or the like. The first area 71a and the second area 71b may be provided at the same time or may be provided separately.

The welded portion 72 is located on one side of the hooking portion 73 in the longitudinal direction X and on the other side of the bent portion 58. In the present modification, the welded portion 72 also corresponds to the second joint portion 8A that separably joins the second band portion 53 and the third band portion 54. The welded portion 72 is formed by, for example, an ultrasonic welding method or the like.

The bonding strength between the first region 71a and the second region 72a in the welded portion 71 and the welded portion 72 (that is, the shear strength in each welded portion 71, 72) is, for example, 0.5 N/10 mm or more and 11.5 N/10 mm or less. Is. When the bonding strength is 0.5 N/10 mm or more, unintentional disconnection of the welded portions 71 and 72 can be prevented. When the bond strength is 11.5 N/10 mm or less, the bond between the welded portions 71 and 72 can be canceled with an appropriate force. The lower limit of the bond strength is not limited to 0.5 N/10 mm, and may be 1.5 N/10 mm, for example. Further, the upper limit value of the bonding strength is not limited to 11.5 N/10 mm, and may be 8.0 N/10 mm or 7.1 N/10 mm, for example.

In the extending direction of the strip base material 51, the first strip portion 52, the second strip portion 53, and the bent portion 58, which are located between the first region 71a of the welding portion 71 and the welding portion 72, are the welding portion 71. , 72 and an adhesive or the like, and at least a part of them is bent. Therefore, the first band portion 52, the second band portion 53, and the bent portion 58, which are located between the first region 71a of the welded portion 71 and the welded portion 72, are the same as the curved portion 16b in the first embodiment. It can perform the same function.

The hooking portion 73 is a hook member configured to be physically hooked to the fixed member when the fixing member 100D is deployed. Although not shown, the hooking portion 73 is fixed to the first band portion 52 with an adhesive or the like, for example. For example, when the member to be fixed is a non-woven fabric (PS-108-S manufactured by Mitsui Chemicals, Inc.), the 90-degree peeling force of the hooking portion 73 with respect to the member to be fixed is, for example, 0.3 N/25 mm or more. The dynamic shear strength of the stopper 73 with respect to the fixed member is, for example, 10 N/25 mm or more. The 90-degree peeling force and the dynamic shearing force of the hook portion 73 with respect to the nonwoven fabric can be measured in the same manner as the 90-degree peeling force and the dynamic shearing force of the adhesive layer 12 with respect to the nonwoven fabric.

The hooking portion 73 has a structure in which a plurality of hooks 75 are provided on a pedestal 74, and is located between the welding portions 71 and 72 in the longitudinal direction X. The hook 73 is a band-shaped portion. From the viewpoint of increasing the locking force on the fixed member, the length of the locking portion 73 along the longitudinal direction X is, for example, 2 mm or more, 3 mm or more, or 4 mm or more. Further, from the viewpoint of ensuring the play of the first band portion 52, the length of the hooking portion 73 along the longitudinal direction X is, for example, 30 mm or less, 20 mm or less, or 10 mm or less. The hook 75 has a substantially mushroom shape in a side view. The umbrella located at the tip of the hook 75 has, for example, an elliptical shape having a major axis along the longitudinal direction X when viewed from the thickness direction Z. Accordingly, when a force for contracting the fixing member 100D is generated in a state where the hooking portion 73 is hooked on the fixed member, the hook 75 easily bites into the fixed member. That is, the hooking force of the hooking portion 73 is more easily exerted. The shape of the hook 75 is not limited to this, and may be appropriately set based on the dimensions (length, width) of the fixing member, the degree of longness, and the like. For example, the hook 75 may have a hook shape, a T shape, a J shape, or the like as long as the hooking force is satisfied.

Even when a shearing force is applied to the tab 13 of the fixing member 100D according to the second embodiment as described above, the same operational effect as that of the first embodiment can be obtained. That is, the combination of the binding force of the first coupling portion 7B and the binding force of the second coupling portion 8A is hindered by the play of the first band portion 52 that functions as a force synthesis inhibiting portion. As a result, the folded state of the first band portion 52 and the second band portion 53 can be eliminated with a shearing force lower than that of the comparative example.

The present invention has been described in detail above based on the above-described embodiment and modifications. However, the present invention is not limited to the above embodiment and the above modifications. The present invention can be further modified without departing from the gist thereof.

For example, the above embodiment and the above modifications may be combined as appropriate. For example, the contents of the first modification of the first embodiment or the contents of the second modification of the first embodiment may be combined with the second embodiment. Further, the contents of the modification of the second embodiment may be combined with the first embodiment.

In the above-mentioned embodiment and the above-mentioned modification, the 2nd joined part is made into the part which connects the 2nd belt material (or the 2nd belt portion) and the 3rd belt material (or the 3rd belt portion) so that separation is possible. However, it is not limited to this. For example, the second joining portion may be a portion that detachably joins the first band base material (or the first band part) and the second band base material (or the second band part). That is, the position and definition of each coupling part can be arbitrarily interpreted. For example, in the above-described first embodiment, the third portion 12c of the adhesive layer 12 closest to the tab 13 in the longitudinal direction X is the first coupling portion, and the third portion 12c of the adhesive layer 12 that is farther from the tab 13 than the first coupling portion is. The third portion 12c may be the second coupling portion. In this case, a shearing force along the longitudinal direction X is applied to the tab 13 to eliminate the first joint portion, and then the second joint portion is eliminated, whereby the first strip base material 1 and the second strip base material are removed. The material 2 may be separated.

In the above-mentioned embodiment and the above-mentioned modification, the fixing member has a substantially Z-shaped cross section, but is not limited to this. Specifically, the fixing member is not limited to the three-layer structure, and may have a two-layer structure or a single-layer structure. FIG. 8A is a schematic sectional view showing a fixing member according to another example, and FIG. 8B is a schematic sectional view showing a fixing member according to another example. The fixing member 100E shown in FIG. 8A has a first band base material 1 and a second band base material 2 and a tab 13. In this fixing member 100E, the adhesive layer 22 functions as a portion to be adhered to the fixed member. Further, for example, the third portion 12c of the adhesive layer 12 closest to the tab 13 in the longitudinal direction X is the first joint portion 7, and the third portion 12c of the adhesive layer 12 farther from the tab 13 than the first joint portion 7 is. It is the second coupling portion 8B. The fixing member 100F shown in FIG. 8B has only the first band base 1 and the tab 13. In this case, the third portion 12c of the adhesive layer 12 functions as a connecting portion that detachably adheres the base material layer 11 and the fixed member. In other examples such as these, the same operational effects as those of the above-described embodiment and the like are achieved. In other words, due to the presence of the curved portion 16b, each coupling portion can be easily eliminated by simply applying a shearing force to the tab 13.

In the above-mentioned embodiment and the above-mentioned modification, each base material layer may be constituted by the same material or may be constituted by different materials. For example, the base material layer of the second band base material may exhibit extensibility. In this case, the elastomer may be contained in the resin material forming the base material layer.

In the present invention, the force synthesis inhibiting unit does not necessarily have to be provided. For example, the shear strength of the first joint portion that joins the first strip base material (or the first strip portion) and the second strip base material (or the second strip portion) is 0.5 N/10 mm or more and 11.5 N/10 mm. In the following cases, the shearing force is simply applied to the tab to bond the first band base material (or the first band part) and the second band base material (or the second band part) by the first bonding portion. It can be resolved.

The present invention will be described in more detail by the following examples, but the present invention is not limited to these examples. In addition, below, the fixing member provided with the force synthesis inhibiting portion in the above-described embodiment and the modified example is taken as an example, and the fixing member not having the force synthesis inhibiting portion is taken as a comparative example. Therefore, in the following, a comparison of performance confirmation test results depending on the presence/absence of the force synthesis inhibiting portion will be described.

(Example 1)
FIG. 9A is a schematic side view of the fixing member used in the first embodiment. In FIG. 9A, the adhesive layer is omitted. In Example 1, as shown in FIG. 9A, the fixing member 100G including the first band base material 1 and the second band base material 2 was formed. Specifically, first, a first strip base material 1 having a long side length of 75 mm and a second strip base material 2 having a long side length of 75 mm were prepared. An adhesive is selectively provided on one surface of the first strip base material 1, and a layered adhesive is provided on the entire one surface of the second strip base material 2. The short side length of the first strip base material 1 and the second strip base material 2 was set to 15 mm.

Next, the three curved portions 16b were formed by bending a part of the first band base material 1 (a part where the adhesive was not provided). Then, the first strip base material 1 provided with the three curved portions 16b was attached to the second strip base material 2. At this time, one end of the second strip base material 2 was bent, and the adhesive layer of the first strip base material 1 and the adhesive layer of the second strip base material 2 were brought into contact with each other. By the above, the fixing member 100G was formed.

The first band base material includes a polypropylene/polyethylene film (first base material layer) having a thickness of 80 μm, a layered pressure-sensitive adhesive (first adhesive layer), and a tab made of a polypropylene film having a thickness of 80 μm. In Example 1, the pressure-sensitive adhesive forming the first adhesive layer is a styrene-isoprene-styrene-based pressure-sensitive adhesive (SIS-based adhesive).

The second strip base material includes a polypropylene/polyethylene film (second base material layer) having a thickness of 80 μm and a layered pressure-sensitive adhesive (second adhesive layer). In Example 1, the adhesive forming the second adhesive layer is a SIS adhesive like the adhesive forming the first adhesive layer.

In FIG. 9A, reference symbol A indicates the dimension of the base portion 16a along the longitudinal direction X, reference symbol B indicates the dimension of the curved portion 16b along the extending direction of the base material layer 11, and reference symbol C indicates the longitudinal direction. The dimensions of the bend 16b along X are shown. The values of symbols A to C in Example 1 match the items A to C shown in Table 1 below.

(Examples 2 to 5)
In each of Examples 2 to 5, as shown in Table 1 below, a fixing member was formed in the same manner as in Example 1 except that the dimension of the base portion along the longitudinal direction was changed.

(Example 6)
FIG. 9B is a schematic side view of the fixing member used in the sixth embodiment. In FIG. 9B, the adhesive layer is omitted. In Example 6, as shown in FIG. 9B, the fixing member 100H including the first band base material 1A and the second band base material 2 was formed. Specifically, first, a first strip base material 1A having a long side length of 75 mm and a second strip base material 2 having a long side length of 75 mm were prepared. The short side length of the first strip base material 1A and the second strip base material 2 was set to 15 mm.

Next, by bending and bending a part of the first band base material 1A, three curved portions 16b were formed that were bent without a gap. Subsequently, after forming the curved portion 16b, an adhesive was applied to the entire one surface of the first band base material 1A. Therefore, the adhesive was also applied to the base of the curved portion 16b in the thickness direction. Then, the first band base material 1A was attached to the second band base material 2. At this time, one end of the second strip base material 2 was bent, and the adhesive layer of the first strip base material 1A and the adhesive layer of the second strip base material 2 were brought into contact with each other. As described above, the fixing member 100H was formed.

In Example 6, the values of the symbols A and B shown in FIG. 9B are as shown in Table 2 below. In addition, in Example 6, the code|symbol C shall be 0 mm.

(Examples 7 to 9)
In each of Examples 7 to 9, as shown in Table 2 below, a fixing member was formed in the same manner as in Example 6 except that the dimension of the base portion along the longitudinal direction was changed.

(Comparative Example 1)
In Comparative Example 1, first, a first band base material in which an adhesive was applied to the entire one surface of the base material layer and a second band base material were prepared. Then, the fixing member was formed by attaching the first band base material to the second band base material without bending the first band base material.

(Comparative example 2)
In Comparative Example 2, first, the same first belt base material as in Example 1 was prepared. Then, the fixing member was formed by attaching the first band base material to the second band base material without bending the first band base material. In Comparative Example 2, the item A shown in Table 3 below shows the dimensions of the base along the longitudinal direction, and the items B and C are along the longitudinal direction of the portion of the first strip base material where no adhesive is provided. The dimensions are shown. The values of items A to C in Comparative Example 2 are as shown in Table 3 below.

(Comparative Examples 3 to 6)
In each of Comparative Examples 3 to 6, as shown in Table 3 below, a fixing member was formed in the same manner as Comparative Example 2 except that the dimension of the base portion along the longitudinal direction was changed.

<Peeling force when deploying the fixing member>
For each example and each comparative example, 90° peel strength between the first strip base material and the second strip base material, and shear strength between the first strip base material and the second strip base material. Was measured according to the measuring method described in the above embodiment. The 90° peel strength and shear strength of each example and each comparative example are shown in Tables 1 to 3 above. Further, in each of Examples and Comparative Examples, values obtained by dividing the shear strength by the 90° peel strength are also shown in Tables 1 to 3 above.

FIG. 10( a) is a diagram showing the 90° peel strength measurement result of Example 1, and FIG. 10( b) is a diagram showing the shear strength measurement result of Example 1. FIG. 11( a) is a diagram showing the 90° peel strength measurement result of Comparative Example 1, and FIG. 11( b) is a diagram showing the shear strength measurement result of Comparative Example 1. FIG. 12( a) is a diagram showing the 90° peel strength measurement result of Comparative Example 2, and FIG. 12( b) is a diagram showing the shear strength measurement result of Comparative Example 2. In each of FIG. 10(a), FIG. 11(a), and FIG. 12(a), the horizontal axis represents the pulling distance and the vertical axis represents the 90° peeling force applied to the fixing member. In each of FIG. 10(b), FIG. 11(b), and FIG. 12(b), the horizontal axis represents the pulling distance, and the vertical axis represents the 180° shearing force applied to the fixing member.

Comparing FIGS. 10A and 10B with FIGS. 11A and 11B, a plurality of peaks are present in Example 1, while a plurality of peaks are observed in Comparative Example 1. There wasn't. Further, the maximum value of the shear strength in Example 1 was significantly smaller than that in Comparative Example 1. From this result, in the case of Example 1, it can be inferred that the first band base material can be easily developed by simply applying a shearing force to the tab.

Comparing FIG. 10( a) and FIG. 12( a ), no significant difference was found between Example 1 and Comparative Example 2. From this result, it can be inferred that when the laminated state of the fixing member is released by the 90° peeling force, the curved portion tends to have no influence.

Comparing FIG. 10( b) and FIG. 12( b ), while a plurality of peaks are generated in Example 1, in Comparative Example 2 there is only one peak that is significantly larger than that in Example 1. Occurred. Specifically, in Example 1, a plurality of peaks of shear strength of 2.7 N/10 mm on average are confirmed, while in Comparative Example 2, a peak of shear strength of 11.8 N/10 mm is confirmed. From this, it can be inferred that in Example 1, the coupling of the first coupling portions was released in order due to the presence of the curved portion, whereas in Comparative Example 2, the coupling forces of all the first coupling portions were combined. That is, it can be inferred that the curved portion functions as a force synthesis inhibiting portion. From this result, it can be inferred that in Example 1, the laminated state of the fixing member can be easily released by simply applying the shearing force to the tab. In other words, in Comparative Example 2, it can be inferred that it is difficult to release the laminated state of the fixing member by simply applying the shearing force to the tab.

13A to 13D are views showing the results of measuring the shear strength of Examples 2 to 5, respectively. As shown in FIGS. 13A to 13D, although the maximum value of each peak increases as the dimension of the base increases, the same tendency as in Example 1 is exhibited. From this, it can be inferred that also in Examples 2 to 5, the curved portion functions as the force synthesis inhibiting portion.

FIG. 14( a) is a diagram showing the 90° peel strength measurement result of Example 6, and FIG. 14( b) is a diagram showing the shear strength measurement result of Example 6. As shown in FIG. 14A, the 90° peel strength measurement result of Example 6 was unstable as compared with Example 1. On the other hand, as shown in FIG. 14( b ), the shear strength measurement result of Example 6 showed a plurality of peaks as in Examples 1 to 5. Particularly, in Example 6, the maximum values other than the first peak were the same as those in Example 1. From this result, it can be inferred that at least a part of the bending portion 16b in Example 6 functions as a force synthesis inhibiting portion.

15A to 15C are diagrams showing the 90° peel strength measurement results of Examples 7 to 9, respectively. As shown in FIGS. 15A to 15C, as the size of the base increases, a plurality of peaks tend to become clear even when 90° peeling is performed.

16(a) to 16(c) are diagrams showing the shear strength measurement results of Examples 7 to 9, respectively. As shown in FIGS. 16A to 16C, although the maximum value of each peak increases as the size of the base increases, the same tendency as in Example 6 is exhibited. From this, it can be inferred that the curved portion also functions as the force synthesis inhibiting portion in Examples 7 to 9.

17A to 17D are diagrams showing the results of measuring the shear strength of Comparative Examples 3 to 6, respectively. As shown in FIGS. 17A to 17D and Table 3, the maximum value of the shear strength does not fall below 11.7 N/10 mm. Therefore, in Comparative Examples 3 to 6 as well, it can be inferred that it is difficult to release the laminated state of the fixing member by simply applying the shearing force to the tab.

1, 1A, 1B... 1st band base material, 2... 2nd band base material, 3... 3rd band base material, 5... 1st bending part, 6... 2nd bending part, 7, 7A, 7B... 1st joint part, 8, 8A... 2nd joint part, 11, 21, 31... Base material layer, 12, 12A... Adhesive layer, 16, 16A, 61... Central part, 16a, 62... Base part, 16b, 63... Curved parts, 22, 32... Adhesive layer, 41... Force synthesis inhibiting part, 51... Band base material, 52... First band part, 53... Second band part, 54... Third band part, 55-57... Adhesive layer , 71, 72... Welding portion, 73... Hooking portion, 100, 100A to 100H... Fixing member.

Claims (18)

A first strip portion, a second strip portion and a third strip portion extending along a first direction, wherein the first strip portion, the second strip portion and the third strip portion are in the first direction. A fixing member that is folded along a second direction that intersects with and is set in a stacked state in which the layers are stacked in order.
A first coupling portion and a second coupling portion that maintain the stacked state,
The first band portion and the second band portion are folded at a first bent portion located on one side in the first direction, and are separably coupled via the first coupling portion. Cage,
The second band portion and the third band portion are folded at a second bent portion located on the other side in the first direction,
The first band portion has a force synthesis inhibition portion that inhibits synthesis of the binding force of the first binding portion and the binding force of the second binding portion.
Fixed member. The fixing member according to claim 1, wherein the first band portion and the second band portion are separably coupled to each of the first coupling portion and the second coupling portion. The fixing member according to claim 1, wherein at least a part of the force synthesis inhibiting portion is separated from the second band portion. The fixing member according to claim 1, wherein at least a part of the force synthesis inhibiting portion is bent. The fixing according to any one of claims 1 to 4, wherein the first band portion has an adhesive portion that overlaps the first coupling portion in the second direction and detachably adheres to the second band portion. Element. The fixing member according to claim 5, wherein the force synthesis inhibiting portion and the adhesive portion overlap each other in the second direction. A first strip portion, a second strip portion, and a third strip portion that are set in a stacked state that extend along a first direction and are sequentially stacked along a second direction that intersects the first direction;
A first coupling part and a second coupling part that maintain the stacked state,
The first band portion and the second band portion are folded at a first bent portion located on one side in the first direction, and are separably coupled via the first coupling portion. Cage,
The second band portion and the third band portion are folded at a second bent portion located on the other side in the first direction,
The shear strength of the first joint portion when the end portion of the first band portion located on the opposite side of the first bent portion in the first direction is pulled along the first direction is 0.5 N. /10 mm or more and 11.5 N/10 mm or less,
Fixed member. The shear strength of the first joint portion when the end portion of the first band portion located on the opposite side of the first bent portion in the first direction is pulled along the first direction is 0.5 N. The fixing member according to any one of claims 1 to 7, which is /10 mm or more and 8.0 N/10 mm or less. The fixing member according to claim 8, wherein the shear strength is 1.5 N/10 mm or more and 7.1 N/10 mm or less. The second direction is orthogonal to the first direction,
The 90° peel strength of the first bonding portion when the end portion is pulled along the second direction is 0.5 N/10 mm or more and 4.5 N/10 mm or less,
The fixing member according to any one of claims 7 to 9, wherein a value obtained by dividing the shear strength by the 90° peeling strength is 6.0 or less. The fixing member according to claim 7, wherein the first strip portion has an adhesive portion that overlaps the first coupling portion in the second direction and that detachably adheres to the second strip portion. The fixing member according to claim 1, wherein the first band portion is detachably welded to the second band portion at the first coupling portion. The fixing member according to any one of claims 1 to 12, which has a hooking portion that is fixed to the first band portion and that can be hooked to a fixed member. The fixing member according to claim 1, further comprising a tab fixed to the first band portion. A folded band base including the first band portion, the second band portion, and the third band portion;
The fixing member according to any one of claims 1 to 14, wherein each of the first bent portion and the second bent portion is a bent portion of the band base material. A first strip substrate including the first strip portion;
A second band base including the second band portion and the first bent portion;
Further comprising a third strip base including the third strip portion and the second bent portion,
The fixing member according to claim 1, wherein the first band base material, the second band base material, and the third band base material are independent of each other. A sanitary article comprising the fixing member according to any one of claims 1 to 16. The fixing member according to claim 1, further comprising an adhesive layer located on the opposite side of the second band portion with the third band portion interposed therebetween in the second direction.
A fixed member to which the fixing member is bonded via the adhesive layer,
An absorbent article comprising.

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