JP2012143432A - Adhesive tape and disposable diaper with disposal tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adhesive tape folded into a Z-shape, which has a base piece effectively prevented from being separated from an object without reducing the length of an extendable piece made of an intermediate piece and an uppermost piece.SOLUTION: A reinforcement piece for preventing the separation between the base piece of the adhesive tape and the outer surface of the object, is disposed between the adhesive tape folded into the Z-shape and the outer surface of the object. Accordingly, the base piece is prevented from being separated from the object without reducing the length of the extendable piece of the adhesive tape.

Description

  The present invention relates to an adhesive tape that is bonded to an object. Specifically, the adhesive tape of the present invention is a post-treatment tape for holding the disposable diaper in a rolled state when the disposable diaper is discarded. Moreover, this invention relates to the disposable diaper with a post-processing tape to which the post-processing tape was attached.

  Conventionally, post-processing tapes attached to disposable diapers are known. The post-processing tape has a function of winding the disposable diaper, which has been rounded compactly, in order to hold the disposable diaper in a rounded state.

  A post-treatment tape of a general disposable diaper has a base piece that adheres to the diaper, an intermediate piece that continues to the base piece, and an uppermost piece that continues to the intermediate piece. It is bonded to the outer surface of the diaper while being folded into a shape (Patent Document 1). The base piece and the intermediate piece, and the intermediate piece and the uppermost piece are bonded to each other in a peelable manner, and the outer surface of the base piece and the diaper are bonded to each other so as not to be peeled off under normal use. However, after the top piece is picked, the top piece and the intermediate piece are peeled off, the intermediate piece and the base piece are peeled off, and when the force is applied again in the direction in which the top piece and the intermediate piece are peeled off, There was a problem of peeling from the outer surface of the diaper. That is, the base piece of the post-processing tape is most easily peeled off from the connecting point side with the intermediate piece, and when pulled from the connecting point side, it is easily peeled off from the outer surface of the diaper. In particular, when the outer surface of the diaper is covered with a cover sheet formed of a nonwoven fabric or the like, only the surface layer of the cover sheet is peeled off or the cover sheet itself is torn as the base piece is peeled off. There was a problem to do.

  In order to solve the above-mentioned conventional problems, a post-processing tape having a structure for reinforcing the holding force of the intermediate piece at the connection point of the base piece has been proposed (Patent Document 2). In the technique disclosed in Patent Document 2, for example, an intermediate piece is extended and a part of the intermediate piece is bonded to the outer surface of the diaper. In this way, since a part of the intermediate piece is bonded to the diaper, the uppermost piece and the intermediate piece are deployed and then pulled in the same direction as the direction in which the uppermost piece and the intermediate piece are separated again. However, it is possible to prevent the base piece from easily peeling off from the diaper.

International Publication WO / 01/13842 / A1 JP-A-7-157728

  However, the conventional post-processing tape has the following problems.

  First, in the conventional post-processing tape, since the intermediate piece and the base piece are connected in the middle of the intermediate piece, the unfolded free piece made up of the intermediate piece and the uppermost piece is folded into a normal Z shape. There was a problem that it would be shorter than the tape. If the unfolding free piece is short, it becomes difficult to bond the unfolding free piece to the outer surface of the diaper body side after the diaper is rolled, beyond the waist circumference end of the diaper. Therefore, the conventional post-processing tape has impaired the original function of the post-processing tape that maintains the diaper after use in a compactly rolled state.

  In order to solve such a situation, it is conceivable that the position where the post-processing tape is disposed is close to the end of the diaper around the stomach, but generally, the end of the diaper is formed of a thin material. If a post-treatment tape made of a hard material such as vinyl is provided, there is a problem that the wearer feels uncomfortable. Although the length of the entire post-processing tape (especially the length of the intermediate piece) can be increased, the total length of the folded post-processing tape increases as the overall length increases. At times, the post-treatment tape is easily caught on clothes, the wearer feels uncomfortable, or the diaper looks bad.

  Secondly, when a person is pulling an object by hand, if the stress on the pull suddenly increases, the pulling force is often increased. Even if the structure that strengthens the connection point of the base piece is adopted, there is a problem that the base piece cannot be completely prevented from peeling off from the outer surface of the diaper. In other words, it was technically difficult to strengthen the connection point between the intermediate piece and the base piece more firmly than the force that humans apply reflexively. In particular, disposable diapers have a structure in which a back sheet made of a liquid-impermeable material is covered with a cover sheet made of a flexible material such as a nonwoven fabric, and a post-treatment tape is adhered to the cover sheet. In the case where the base piece and the diaper are peeled off by the force applied by human reflection, if the intermediate piece is used to strengthen the connection point of the base piece like the conventional post-processing tape, There was a problem that the cover sheet of the diaper was torn.

  As a result of intensive studies to solve the above-described problems of the prior art, the present inventor prevents peeling of the base piece of the post-processing tape and the outer surface of the diaper between the Z-folded post-processing tape and the outer surface of the diaper. It was found that the base piece can be prevented from peeling from the diaper without shortening the length of the unfolded piece of the post-treatment tape by arranging the reinforcing piece for this purpose.

  In addition, the inventor did not reinforce the connection point of the base piece with the intermediate piece, but dared to leave the connection piece of the base piece easy to peel off, and part of the base piece peeled off the diaper. At the same time, the tape user was given a sense that a part of the tape was peeled off from the diaper, and by recognizing the abnormality of the tape, the user obtained the knowledge that the tape pulling force was weakened reflexively. Furthermore, the present inventor has obtained knowledge that the post-treatment tape can be prevented from coming off if the reinforcing piece receives the pulling force of the tape user.

  And based on the said knowledge, it came to the idea that the conventional subject could be solved, and completed the present invention. The technical idea based on the above knowledge can be widely applied not only to the post-processing tape bonded to the disposable diaper but also to the pressure-sensitive adhesive tape for holding the bonded object in a rolled state. Specifically, the present invention has the following configuration.

The first aspect of the present invention is an adhesive tape for holding an object in a rolled state.
The adhesive tape according to the present invention basically has a base piece 1, an intermediate piece 2, an uppermost piece 3, and a reinforcing piece 4. The base piece 1, the intermediate piece 2, the uppermost piece 3, and the reinforcing piece 4 may be continuous by being integrally formed, or may be configured as separate bodies and bonded to each other. It may be continuous.
The base piece 1 is a part that is adhered to the object 100 and has an adhesive layer on the back surface that is the surface on the object 100 side.
The intermediate piece 2 is a portion that is continuous with the base piece 1.
The uppermost piece 3 is a portion that is continuous with the intermediate piece 2 and has an adhesive layer on the back surface that is the surface on the object 100 side.
Then, the base piece 1, the intermediate piece 2, and the uppermost piece 3 are folded back at the respective connection points and folded into a Z shape.
The reinforcing piece 4 is a portion that is continuous with the base piece 1 and is disposed between the object 100 and the base piece.
The length of the reinforcing piece 4 in the longitudinal direction is shorter than the length in the longitudinal direction of the base piece 1 so that the back surface of the base piece 1 is directly bonded to the object 100 in the vicinity of the connection point with the intermediate piece 2. ing.
Further, the reinforcing piece 4 has an adhesive layer on the back surface that is a surface to be bonded to the object 100, and has a release layer on the surface that is a surface in contact with the base piece 1.
The adhesive tape according to the present invention is obtained by wrapping the object 100 in a state where the intermediate piece 2 and the uppermost piece 3 are stretched, and adhering to the object 100 with the adhesive on the back surface of the uppermost piece 3. The object 100 can be held in a rolled state.

By having such a configuration, the present invention can effectively prevent the base piece from being peeled from the object without shortening the length of the unfolding free piece including the intermediate piece and the uppermost piece.
Specifically, since the reinforcing piece is disposed between the base piece and the object, there is no need to extend the intermediate piece and attach a part of the intermediate piece to the object. The length in the longitudinal direction can be maintained.
In addition, the reinforcing piece is disposed between the base piece and the object, and does not reinforce the connection point between the base piece and the intermediate piece. It gives a sense of peeling off and can recognize that the tape has been pulled in a different direction from normal use. Accordingly, it is possible to prevent the base piece from being completely peeled off from the object or the object from being damaged by the force applied by the user.

In the first aspect of the present invention, the reinforcing piece 4 may be configured separately from the base piece 1.
In this case, the reinforcing piece 4 has one end continuous with the intermediate piece 2 of the base piece 1, the tip on the other end side folded back toward the surface of the reinforcing piece 4, and the back surface of the reinforcing piece 4 becomes the back surface of the base piece 1. It is preferable to be adhered.

  In this way, a part of the reinforcing piece is folded back, and the back surface of the reinforcing piece and the back surface of the base piece are adhered to each other. Since the holding force of the adhesive tape is maintained in a strong state by the piece (reinforcing piece or base piece) on the opposite side, it is possible to prevent the situation where the adhesive tape easily peels off the object.

  In the first aspect of the present invention, the reinforcing piece 4 is configured separately from the base piece 1, and the back surface of the base piece 1 is bonded to the object 100 in the vicinity of the connection point with the intermediate piece 2. The surface 11, the second adhesive surface 12 that adheres to the surface of the reinforcing piece 4, the third adhesive surface 13 that adheres to the back surface of the reinforcing piece 5, and the fourth that adheres to the object 100 in the vicinity of the tip side of the base piece 1. It is preferable that the adhesive surface 14 is included. In particular, the adhesive force 11 ′ between the first adhesive surface 11 and the object 100 is preferably greater than the adhesive force 12 ′ between the second adhesive surface 12 and the surface of the reinforcing piece 4 (11 ′> 12 '). The difference between the adhesive force 11 'and the adhesive force 12' is preferably larger.

In this way, the back surface of the base piece has the first adhesive surface that directly adheres to the object in the vicinity of the connection point between the base piece and the intermediate piece, so that the user of the tape can attach the uppermost piece to the unfolded free piece. When a force in the same direction as the direction for peeling the intermediate piece is applied, it is possible to give a feeling that a part of the base piece (first adhesive surface) and the object peel. Therefore, it is possible to make the user recognize the abnormality of the tape and stop pulling the unfolding free piece.
Even if the user cannot recognize the abnormality of the tape, the back surface of the base piece has a second adhesive surface that adheres to the surface of the reinforcing piece 4 having the release layer. Since the portion (second adhesive surface) is easily peeled off, the user feels that the peeling between the base piece and the object has accelerated ("beats out"). Therefore, the user can reflexively weaken the force pulling the unfolding free piece.
Then, the back surface of the base piece has the third adhesive surface that adheres to the back surface of the reinforcing piece, and the fourth adhesive surface that adheres to the object in the vicinity of the distal end side of the base piece, so Even when pulled from the direction, the holding force of the adhesive tape can be maintained in a strong state by a piece (reinforcing piece or base piece) on the side opposite to the tensile direction. Accordingly, the user weakens the pulling force of the unfolded free piece due to the “beat-off” that occurs when the second adhesive surface of the base piece is peeled from the surface of the reinforcing piece. Due to the holding force with which the fourth adhesive surface adheres to the object, it is possible to effectively prevent the situation where the adhesive tape is completely detached from the object.

  In the first aspect of the present invention, the reinforcing piece 4 may be integrally continuous with the base piece 1 at one end where the base piece 1 is continuous with the intermediate piece 2 and at the other end. In this case, the base piece 1, the intermediate piece 2, the uppermost piece 3, and the reinforcing piece 4 are folded four times.

  As described above, by integrally connecting the reinforcing piece and the base piece, the structure of the pressure-sensitive adhesive tape according to the present invention can be simplified, and the length of the unfolded free piece including the intermediate piece and the uppermost piece can be shortened. Therefore, it is possible to effectively prevent the base piece from peeling off from the object.

  In the first aspect of the present invention, when the reinforcing piece 4 and the base piece 1 are integrally formed continuously, the surface of the base piece 4 is preferably fixed by the fixing piece 5. The fastening piece 5 includes a base piece bonding surface 51 bonded to the surface of the other end of the base piece 1 and one end continuous with the intermediate piece 2, and an object bonding surface 52 bonded to the object 100.

  The pressure-sensitive adhesive tape according to the present invention has a fastening piece, so that a piece (reinforcing piece or fastening piece) on the side opposite to the tensile direction, regardless of which direction the unfolded free piece is pulled. ) Can maintain the holding force of the adhesive tape in a strong state.

  1st side surface of this invention WHEREIN: It is preferable that the adhesion layer is provided in the back surface which is the surface by the side of the base piece 1 of the intermediate piece 2. As shown in FIG. Moreover, it is preferable that a release layer is provided on the surface that is the surface of the base piece 1 on the intermediate piece 2 side and the surface that is the surface of the intermediate piece 2 on the top piece 3 side.

  The adhesive layer provided on the back surface of the intermediate piece has a function of maintaining the state where the intermediate piece and the base piece are adhered in a state where the adhesive tape is folded. Further, the release layer provided on the surface of the base piece has a function of appropriately peeling the base piece from the intermediate piece when the adhesive tape is developed. The release layer provided on the surface of the intermediate piece has a function of appropriately peeling off the uppermost piece from the intermediate piece when the adhesive tape is developed.

The 2nd side surface of this invention is the disposable diaper 100 with a post-processing tape to which the post-processing tape 200 for hold | maintaining the disposable diaper in the rolled state at the time of disposal of a disposable diaper is attached.
The post-processing tape 200 is
A base piece 1 having an adhesive layer on the back surface, which is the surface on the disposable diaper 100 side;
An intermediate piece 2 continuous with the base piece 1,
Continuing with the intermediate piece 2, the uppermost piece 3 having an adhesive layer on the back surface, which is the surface on the disposable diaper 100 side,
The base piece 1, the intermediate piece 2, and the top piece 3 are folded into a Z shape,
And further comprising a reinforcing piece 4 continuous with the base piece 1 and disposed between the disposable diaper 100 and the base piece 1;
The length of the reinforcing piece 4 in the longitudinal direction is shorter than that of the base piece 1 so that the back surface of the base piece 1 is directly bonded to the disposable diaper 100 in the vicinity of the connection point with the intermediate piece 2.
The reinforcing piece 4 has a pressure-sensitive adhesive layer on the back surface that is a surface to be bonded to the object 100 and a release layer on the surface that is a surface in contact with the base piece 1.
The uppermost piece 3 and the intermediate piece 2 are stretched to hold the disposable diaper 100 in a rolled state.

  As described above, the present invention is specifically applied to the post-treatment tape 200 for holding the disposable diaper in a rolled state when the disposable diaper is discarded, and the disposable diaper 100 to which the post-treatment tape 200 is attached. Is preferred.

FIG. 1 is a schematic perspective view showing an example of a disposable diaper with a post-processing tape to which the present invention is applied, and shows a state in which the disposable diaper is viewed from the back side. FIG. 2 is a schematic perspective view showing an example in which a disposable diaper is held in a state of being rounded by a post-processing tape. FIG. 3 is a diagram for explaining the first embodiment of the present invention, and is a schematic sectional view showing an example of a sectional shape in a thickness direction of the post-processing tape in a folded state. FIG. 4 is a diagram for explaining the second embodiment of the present invention, and is a schematic sectional view showing an example of a sectional shape in a thickness direction of the post-processing tape in a folded state. FIG. 5 is a diagram for explaining a third embodiment of the present invention, and is a schematic sectional view showing an example of a sectional shape in a thickness direction of the post-processing tape in a folded state. FIG. 6 is a diagram for explaining a fourth embodiment of the present invention, and is a schematic sectional view showing an example of a sectional shape in the thickness direction of the post-processing tape in a folded state. FIG. 7 is a schematic view showing an example of a normal use state of the post-processing tape in which the uppermost piece and the intermediate piece are developed. FIG. 8 is a schematic view showing an example of a state where the first adhesive surface and the second adhesive surface on the back surface of the base piece of the post-processing tape are peeled off.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below, but includes those appropriately modified by those skilled in the art from the following embodiments. That is, all the configurations at the time of filing can be appropriately employed for the adhesive tape, the post-treatment tape, and the disposable diaper with the post-treatment tape according to the present invention.

  Below, the disposable diaper with a post-processing tape is demonstrated concretely as an example of the target object with an adhesive tape.

  In this specification, “back surface” means the disposable diaper side surface (surface below the figure) when the post-processing tape is folded, and “front surface” is opposite to “back surface”. This means the side surface (the upper surface in the figure).

(1. Overall configuration of disposable diapers)
Disposable diapers include, for example, diapers for infants and the elderly. The disposable diaper has a basic structure of an absorbent body, a top sheet that covers the surface of the absorbent body, and a back sheet that covers the back surface of the absorbent body. Disposable diapers having such a basic structure include, for example, a pant-type diaper that is formed in a pant shape in advance, and a tape-type diaper in which a fixing tape is provided on a side flap that covers the waist of the wearer. .

  FIG. 1 is a schematic perspective view showing an example of a disposable diaper with a post-processing tape to which the present invention is applied, and shows a state in which the disposable diaper is viewed from the back side. As shown in FIG. 1, a post-treatment tape 200 is attached to the back surface of the disposable diaper 100 in a folded state. The post-treatment tape 200 is generally attached to the outer surface of the diaper main body 102 below the position where the waist elastic material 101 of the disposable diaper 100 is disposed in the vertical direction.

  The diaper main body 102 is basically composed of an absorber, a liquid-permeable top sheet that covers the upper surface of the absorber, and a liquid-impermeable back sheet that covers the lower surface of the absorber. Is getting thicker. On the other hand, at the position where the waist elastic material 101 is disposed, the absorber, the top sheet, and the back sheet are not formed, and the layer is relatively thin. For this reason, it is preferable that the post-processing tape 200 is attached to the outer surface of the diaper main body 102 having a relatively thick layer.

  FIG. 2 is a schematic perspective view showing an example in which a disposable diaper is compactly rounded and held in a rounded state by a post-processing tape. The post-processing tape 200 is first unfolded from the folded state so that the uppermost piece 3 is left and the base piece 1, the intermediate piece 2, and the uppermost piece 3 are substantially in a straight line. The developed post-treatment tape 200 crosses the waist periphery 103 of the disposable diaper 100, and the adhesive layer 3a formed on the uppermost piece 3 is adhered to the diaper main body 102, thereby rounding the disposable diaper 100. Keep in state.

  In the post-processing tape 200, basically, the base piece 1 is always adhered to the outer surface of the diaper main body 102, and the base piece 1, the intermediate piece 2, and the uppermost piece 3 are continuously formed to perform post-processing. The tape body 6 is configured. When the uppermost piece 3 is picked and stretched in the post-processing tape main body 6, the intermediate piece 2 and the uppermost piece 3 become the unfolded free piece 7.

  The total length of the post-processing tape main body 6 is, for example, 150 mm to 240 mm. Further, the lengths of the base piece 1, the intermediate piece 2, and the uppermost piece 3 forming the post-processing tape 200 in the longitudinal direction are each set to, for example, 30 mm to 80 mm. In consideration of maintaining the disposable diaper 100 in a rolled state, the unfolded free piece 7 of the post-processing tape 200 preferably has a length of 60 mm to 160 mm. The length of the base piece 1, the intermediate piece 2, and the uppermost piece 3 in the longitudinal direction may be equal to the total length of the post-processing tape 200. The base piece 1, the intermediate piece 2, the uppermost piece 3, and the reinforcing piece 4 forming the post-processing tape 200 are each formed to have a thickness of, for example, 20 to 200 μm, preferably 40 to 150 μm. Moreover, when the raw material which forms the post-processing tape 200 is used for a diaper, it is preferable that they are a polyethylene terephthalate (PET) and a polypropylene (PP).

(2. Configuration of post-processing tape)
Hereinafter, the configuration of the post-processing tape 200 attached to the outer surface of the disposable diaper 100 will be described with reference to FIGS. The post-processing tape 200 is a thin film tape as described above, but in FIGS. 3 to 6, in order to show the configuration of the post-processing tape in an easy-to-understand manner, the drawing was performed conceptually with a thickness.
3 to 6, for convenience of drawing, the base piece 1 of the post-processing tape 200 is not bonded to the disposable diaper 100. However, the base piece of the post-processing tape 200 is originally a disposable diaper from the upper surface direction. It has a surface which adheres to disposable diaper 200 by being crimped to.

  3 to 6 are schematic cross-sectional views showing examples of the cross-sectional shape in the thickness direction of the post-processing tape in a folded state. As shown in FIGS. 3 to 6, the post-processing tape 200 is attached to the outer surface of the disposable diaper 100. On the outer surface of the disposable diaper 100, a cover sheet 105 made of a flexible material such as a nonwoven fabric is formed so as to cover the liquid-impermeable back sheet 104, and the post-processing tape 200 is placed on the cover sheet 105. It is glued. The post-processing tape 200 to which the present invention is applied can be adhered onto the cover sheet 105 even when the back sheet 104 and the cover sheet 105 are easily peeled off.

(2-1. First Embodiment)
FIG. 3 shows a first embodiment of a post-processing tape 200 according to the present invention. The first embodiment is an example in which the base piece 1, the intermediate piece 2, and the uppermost piece 3 are integrally formed continuously, and the reinforcing piece 4 is formed continuously as a separate body from the base piece 1. .

  In the first embodiment, the post-processing tape 200 has one end of the base piece 1 and one end of the intermediate piece 2 integrally connected, and the other end of the intermediate piece 2 and one end of the uppermost piece integrally connected. The other end of the base piece 1 and the other end of the uppermost piece 3 are open ends. That is, the base piece 1, the intermediate piece 2, and the uppermost piece 3 form a post-processing tape main body 6, and the open end of the base piece 1 and the open end of the uppermost piece 3 correspond to the front end of the post-processing tape main body 6, respectively. .

  The post-processing tape body 6 has a first folded portion 61 at a connection point between the base piece 1 and the intermediate piece 2, and has a second folded portion 62 at a connection point between the intermediate piece 2 and the uppermost piece 3. Then, the post-processing tape body 6 is folded back in the first folded portion 61 toward the D1 direction in FIG. 3, and the second folded portion 62 is directed in the D2 direction, which is the direction opposite to the D1 direction in FIG. By being folded back, it can be folded into a Z shape. When the post-processing tape main body 6 is folded in a Z shape, the surface of the base piece 1 and the back surface of the intermediate piece 2 are brought into contact with the surface of the intermediate piece 2 and the back surface of the uppermost piece 1.

  A reinforcing piece 4 is disposed between the base piece 1 and the outer surface of the disposable diaper 100. In the reinforcing piece 4, the tip on the open end side of the base piece 1 is folded back at the third folded portion 41 to form the folded piece 41. By folding the tip of the reinforcing piece 4 on the open end side of the base piece 1, the back surface of the reinforcing piece 4 and the back surface of the base piece 1 are bonded. Thereby, the reinforcement piece 4 and the base piece 1 which were comprised as a different body continue.

  The reinforcing piece 4 is arranged between the base piece 1 and the disposable diaper 100 so that the back side of the base piece 1 on the connection point side and the back side of the open end side of the base piece 1 are directly bonded to the outer surface of the disposable diaper 100. Established. That is, it is preferable that the base piece 1 is directly bonded to the disposable diaper at two points on the back surface on the connection point side with the intermediate piece 2 and the back surface on the open end side.

  In the example shown in FIG. 3, in a state where the post-processing tape 200 is folded, the back surface that is the diaper side surface of the base piece 1, the back surface that is the base piece 1 side surface of the intermediate piece 2, and the intermediate piece of the top piece 3. Adhesive layers 1a, 2a, 3a, and 4a are provided on the back surface that is the surface on the second side and the back surface that is the surface on the diaper side of the reinforcing piece 4, respectively. On the other hand, in a state where the post-processing tape 200 is folded, the surface on the intermediate piece 2 side of the base piece 1, the surface on the top piece 3 side of the intermediate piece 2, the surface of the top piece 3, and the base piece of the reinforcing piece 4. Release layers 1b, 2b, 3b, and 4b are provided on the surface on the one side.

  Hereinafter, the base piece 1, the intermediate piece 2, the uppermost piece 3, and the reinforcing piece 4 constituting the post-processing tape 100 of the first embodiment will be described in detail.

(2-1-1. Basal piece)
The base piece 1 is a piece that is directly bonded to the outer surface of the disposable diaper 100 and serves as a base of the post-processing tape main body 6. Basically, the base piece 1 is bonded to the disposable diaper 100 so that the intermediate piece 2 and the uppermost piece 3 do not peel from the disposable diaper 100 even when the intermediate piece 2 and the uppermost piece 3 are expanded. However, there is a problem that the base piece 1 is easily peeled off from the diaper 100 when it is applied with a force in the same direction (D1 direction) as the direction in which the top piece 3 is peeled off from the intermediate piece 2.

  The base piece 1 is provided with a release layer 1b on the surface thereof. By providing the release layer 1b on the surface of the base piece 1, the adhesive layer 2a provided on the back surface of the intermediate piece 2 is appropriately peeled off from the surface of the base piece 1 when the post-processing tape body 6 is unfolded. It becomes easy.

  On the other hand, an adhesive layer 1 a is provided on the back surface of the base piece 1. Since it is preferable that the back surface of the base piece 1 basically does not peel from the disposable diaper, the adhesive layer 1 a is preferably formed over the entire back surface of the base piece 1.

  Moreover, it is preferable that the back surface of the base piece 1 contains the 1st adhesion surface 11, the 2nd adhesion surface 12, the 3rd adhesion surface 13, and the 4th adhesion surface, as FIG. 3 shows. The first bonding surface 11 is a surface directly bonded to the object 100 in the vicinity of the connection point between the base piece 1 and the intermediate piece 2. The second adhesive surface 12 is a surface that adheres to the surface of the reinforcing piece 4. The third adhesion surface is a surface that adheres to the back surface of the reinforcing piece 5 that is folded back at the third folding portion 41. The fourth adhesive surface 41 is a surface that directly adheres to the object 100 in the vicinity of the open end of the base piece 1.

  Here, the adhesive force 11 ′ between the first adhesive surface 11 and the disposable diaper 100 is preferably larger than the adhesive force 12 ′ between the second adhesive surface 12 and the surface of the reinforcing piece 4 (11 ′). > 12 '). The difference between the adhesive force 11 'and the adhesive force 12' is preferably larger. Further, the adhesive force 13 ′ between the third adhesive surface 13 and the back surface of the reinforcing piece 4 and the adhesive force 14 ′ between the fourth adhesive surface 14 and the disposable diaper 100 are also the second adhesive surface 12 and the reinforcing piece. It is preferable that it is larger than the adhesive force 12 'between the four surfaces (13'> 12 ', 14'> 12 '). Note that the adhesive force 11 ′, the adhesive force 13 ′, and the adhesive force 14 ′ may be the same or different. However, the adhesive force 13 'and the adhesive force 14' are preferably larger than the adhesive force 11 '(13'> 11 ', 14'> 11 ').

The adjustment of the adhesive force can be appropriately adjusted by changing the type of adhesive and the amount of adhesive applied. For example, the adhesive strength of the adhesive layer can be adjusted by using adhesives having different adhesive strengths (tackiness) or changing the amount of adhesive applied. The release layer can also be adjusted by changing the type of dissociator and the amount applied. Furthermore, the adhesive force (adhesive strength) can be adjusted by freely combining the adhesive and the dissociating agent. In addition, it is preferable that the quantity of the adhesive used for this invention is 10-100 g / m < ² >, for example.

  The lengths in the longitudinal direction of the first adhesive surface 11, the second adhesive surface 12, the third adhesive surface 13, and the fourth adhesive surface are, for example, 10 mm to 20 mm, respectively. Each of the bonding surfaces 11, 12, 13, and 14 may be obtained by equally dividing the entire length of the base piece 1 in the longitudinal direction. In order to adjust the length of each of the bonding surfaces 11, 12, 13, and 14, for example, the length of the base piece 1 and the reinforcing piece 4 disposed between the base piece 1 and the disposable diaper 100 are used. What is necessary is just to change a position, the length of the reinforcement piece 4, and the length of the folding | turning piece 42 of the reinforcement piece 4 suitably.

(2-1-2. Intermediate piece)
The intermediate piece 2 is a piece located between the base piece 1 and the uppermost piece 3 in a state where the post-processing tape 200 is folded. The intermediate piece 2 is continuous with the base piece 1 and the uppermost piece 3 and forms an unfolded free piece 7 together with the uppermost piece 3.

  An adhesive layer 2 a is provided on the back surface of the intermediate piece 2. By providing the adhesive layer 2 a on the back surface of the intermediate piece 2, the state where the intermediate piece 2 is adhered to the base piece 1 can be maintained in a state where the post-processing tape 200 is folded.

On the other hand, a release layer 2 b is provided on the surface of the intermediate piece 2. By providing the release layer 2 b on the surface of the intermediate piece 2, the adhesive layer 3 a provided on the back surface of the uppermost piece 2 is appropriately peeled off from the surface of the intermediate piece 2 when the post-processing tape body 6 is unfolded. It becomes easy.
(2-1-3. Top piece)

  The top piece 3 is a piece located at the top of the post-processing tape 200 in the folded state. The uppermost piece 3 is continuous with the intermediate piece 2 and forms an unfolded free piece 7 together with the intermediate piece 2. The uppermost piece 3 is a piece that is bonded to the outer surface of the diaper main body 102 over the diaper waist end 103 when the disposable diaper 100 is discarded.

  An adhesive layer 3 a is provided on the back surface of the top piece 3. By providing the adhesive layer 3 a on the back surface of the top piece 3, the state where the top piece 3 is adhered to the intermediate piece 2 can be maintained in a state where the post-processing tape 200 is folded. Further, since the adhesive layer 3a is provided on the back surface of the uppermost piece 3, the post-treatment tape 200 can be held on the outer surface of the diaper main body 102 side beyond the waist periphery end 103 of the diaper when the disposable diaper 100 is discarded. .

  Moreover, it is preferable that the knob | pick part 31 is provided in the back surface of the open end which is the other end with respect to the end of the top piece 3 continuous with the intermediate piece 2. As shown in FIG. The picking part 3 is a part to be picked when the post-processing tape main body 6 is unfolded. As a result, the top piece 3 is picked and the post-processing tape main body 6 is easily developed. For example, the knob 3 is formed by adhering a non-stick tab to the back of the top piece 3, not forming an adhesive layer on a part of the back of the top piece 3, or separating it on a part of the back of the top piece 3. It is formed by performing mold processing.

(2-1-4. Reinforcing piece)
The reinforcing piece 4 is a piece for preventing the entire post-treatment tape 200 from being peeled from the disposable diaper even when the back surface of the base piece 3 near the first folded portion is peeled off from the disposable diaper 100. . The reinforcing piece 4 is continuous with the base piece 1 and reinforces the bonding state between the base piece 1 and the disposable diaper 100.

  In the first embodiment shown in FIG. 3, the reinforcing piece 4 is disposed so as to be adhered to the middle of the back surface of the base piece 1. Further, the reinforcing piece 4 is folded back by a predetermined length toward the surface of the reinforcing piece 4 at the third folded portion. Thereby, the folded back surface of the reinforcing piece 4 and the back surface of the base piece 1 are bonded.

  An adhesive layer 4 a is provided on the back surface of the reinforcing piece 4. The adhesive layer 4 a is preferably formed over the entire back surface of the reinforcing piece 4. By providing the adhesive layer 4 a on the back surface of the reinforcing piece 4, the reinforcing piece 4 is bonded to the outer surface of the disposable diaper 100, and the folded piece 42 of the reinforcing piece 4 has the back surface of the base piece 1 and the reinforcing piece 4. Adhesion on the back side of the material becomes strong.

  The reinforcing piece 4 has an adhesive surface 43 that adheres to the disposable diaper 100 on its back surface. The adhesive force 43 ′ between the adhesive surface 43 of the reinforcing piece 4 and the disposable diaper 100 is preferably larger than the adhesive force 12 ′ between the second adhesive surface 12 and the surface of the reinforcing piece 4 (43 ′> 12). ´). Moreover, it is preferable that the adhesive force 43 ′ is larger than the adhesive force 11 ′ between the first adhesive surface 11 and the disposable diaper 100 (43 ′> 11 ′). In particular, it is preferable that the adhesive force 43 ′ is larger than the adhesive force 11 ′ and the adhesive force 11 ′ is larger than the adhesive force 12 ′ (43 ′> 11 ′> 12 ′). The adjustment of the adhesive force can be appropriately adjusted by changing the type of adhesive and the amount of adhesive applied.

  On the other hand, a release layer 4 b is provided on the surface of the reinforcing piece 4. Since the release layer 4b is provided on the surface of the reinforcing piece 4, a part of the base piece (second adhesive surface) is easily peeled off. For this reason, the user feels that the peeling of the base piece 1 and the disposable diaper 100 has accelerated ("beats out"). Therefore, it can be expected that the user reflexively weakens the pulling force of the unfolding free piece.

(2-2. Second Embodiment)
Next, a second embodiment of the post-processing tape 200 according to the present invention will be described with reference to FIG. In the description of the second embodiment, the description will focus on the differences from the first embodiment described above.

  The second embodiment is an example in which the base piece 1, the intermediate piece 2, the uppermost piece 3, and the reinforcing piece 4 that are formed as separate bodies are bonded together to form a continuous structure. As shown in FIG. 4, the second embodiment is different from the first embodiment in that the base piece 1, the intermediate piece 2, and the uppermost piece 3 are configured as separate bodies.

  In the second embodiment, the base piece 1 is folded at the end on the side continuous with the intermediate piece 2, and the folded back surface is bonded to the back surface of the intermediate piece 2. The intermediate piece 2 is also folded at the end that is continuous with the uppermost piece 2, and the folded back surface is bonded to the rear surface of the uppermost piece 3.

  In this way, by configuring each piece as a separate body, it is only necessary to form three pieces each having an adhesive layer on one side and then bond each piece in a continuous manner. Compared with the case where it does, it is not necessary to form an adhesive layer and a mold release layer alternately, and the post-processing tape 200 can be manufactured easily. Adhesive layers 1a, 2a, 3a are provided on the back surfaces of the base piece 1, the intermediate piece 2, and the top piece 3, respectively, and the connection point between the base piece 1 and the intermediate piece 1 and the intermediate piece 2 and the top piece 3 are provided. Since the adhesive layers are bonded to each other at the connection point of the pieces 3, the bonded state of each piece can be maintained in a strong state.

(2-3. Third Embodiment)
Next, a third embodiment of the post-processing tape 200 according to the present invention will be described with reference to FIG. The third embodiment of the present invention shown in FIG. 5 differs from the first embodiment described above in that the uppermost piece 3 and the reinforcing piece 4 are integrally formed continuously.

  In the third embodiment of the present invention, the reinforcing piece 4 is integrally continuous with the base piece 1 at one end where the base piece 1 is continuous with the intermediate piece 2 and at the other end. Therefore, the cross-sectional shape of the state in which the post-processing tape 200 is folded is a shape in which the reinforcing piece 1, the base piece 2, the intermediate piece 3, and the uppermost piece 4 are folded in quadruplicate.

  In the third embodiment of the present invention, the back surface of the base piece 1 is on the connection point side between the reinforcing piece 4 and the first bonding surface 11 directly bonded to the disposable diaper 100 on the connection point side with the intermediate piece 2. A second adhesive surface 12 that adheres to the surface of the reinforcing piece 4 is provided.

  In this way, the back surface of the base piece 1 has the first adhesive surface 11 and the second adhesive surface 12 so that the post-processing tape 20 is developed, and the development free piece 7 peels off the top piece 3 and the intermediate piece. When pulled in the direction (D1 direction), first, the first adhesive surface 11 begins to peel, and then the second adhesive surface 12 peels. Since the holding force of the second bonding surface 12 is weaker than the holding force of the first bonding surface 11, the user feels that the peeling between the base piece and the target object has been accelerated (“beat is lost”) and reflected. Weaken the pulling force. In addition, the end portion of the base piece 1 and the reinforcing piece 4 have a strong holding force against the force from the direction D1, and the reinforcing piece 4 is continuous with the end portion of the base piece 1. Therefore, the post-treatment tape 200 is disposed in the disposable diaper 100. It is possible to prevent the situation from completely peeling off.

  Accordingly, in the third embodiment, similarly to the first embodiment, the user is made aware of the abnormality of the post-processing tape, and the base piece 1 is completely peeled from the disposable diaper, or the disposable diaper 100 The situation where the outer surface is damaged can be prevented.

(2-4. Embodiment 4)
Next, a fourth embodiment of the post-processing tape 200 according to the present invention will be described with reference to FIG. The fourth embodiment of the present invention shown in FIG. 6 is an embodiment obtained by further improving the above-described third embodiment.

  As shown in FIG. 6, in the fourth embodiment, similarly to the third embodiment, the reinforcing piece 4 has a base piece 1 at the other end from one end where the base piece 1 is continuous with the intermediate piece 2. It is continuous continuously. Further, a fastening piece 5 having an adhesive surface with the surface of the base piece 1 and an external surface of the disposable diaper 100 is disposed on the connecting point side where the base piece 1 and the reinforcing piece 4 are continuous. Has been. The back surface of the fastening piece 5 includes a base piece bonding surface 51 that is bonded to the surface of the other end of the base piece 1 that is continuous with the intermediate piece 2, and a target object bonding surface that is bonded to the outer surface of the target object 100. 52.

  The fastening piece 5 is provided with an adhesive layer 5a on the back surface thereof. The fastening piece 5 is bonded to the surface of the base piece 1 and the outer surface of the disposable diaper 100 so as to cover the third folded portion 41 that is a connection point between the base piece 1 and the reinforcing piece 4.

  The fastening piece 5 arranged in this way has the same action as the third adhesive surface and the fourth adhesive surface on the back surface of the base piece 1 in the first embodiment of the present invention. That is, even when the unfolded free piece 7 is pulled from either the D1 direction or the D2 direction shown in FIG. 6, the piece on the side opposite to the tensile direction of the unfolded free piece 7 (reinforcement) The holding force of the adhesive tape can be maintained in a strong state by the piece 4 or the fastening piece 5). In particular, since the fastening piece 5 is disposed, a strong holding force can be exerted against pulling from the direction D2 in FIG.

(3. Action of post-processing tape)
Below, with reference to FIG.7 and FIG.8, the effect | action of the post-processing tape which concerns on this invention is demonstrated. In the following, the operation of the present invention will be described based on the above-described first embodiment of the present invention.

  FIG. 7 is a schematic view showing an example of a normal use state of the post-processing tape 200 according to the present invention. First, when the uppermost piece 3 is pulled in the D1 direction from the state where the post-processing tape 200 is folded in a Z shape as shown in FIG. 3, the uppermost piece 3 is peeled off from the intermediate piece 2. Next, when the post-processing tape 200 is pulled in the direction D2 which is the direction opposite to the direction D1, the intermediate piece 2 is peeled off from the base piece 1. Thus, the state in which the uppermost piece 3 and the intermediate piece 2 are peeled off and the unfolded free piece 7 is formed is the normal use state of the post-processing tape 200. In this state, the disposable diaper 100 can be held in a rolled state by adhering the adhesive layer formed on the back surface of the uppermost piece 3 to the diaper body 102 beyond the waist periphery 103 of the disposable diaper 100.

  Further, as shown in FIG. 7, in the normal use state of the post-processing tape 200 described above, the first adhesive surface 11 on the back surface of the base piece 1 is held while being adhered to the outer surface of the disposable diaper 100. Yes.

  On the other hand, when the unfolded free piece 7 of the post-processing tape 200 is further pulled in the direction D1 from the state shown in FIG. 7, first, the first adhesive surface 11 on the back surface of the base piece 11 becomes the disposable diaper 100. Peel from the outer surface. The first adhesive surface 11 on the back surface of the base piece 11 has a strong holding force with the outer surface of the disposable diaper 100, but peels off when pulled with a certain strong force. At this time, the user of the post-processing tape 200 can be given a feeling that the base piece 1 is peeled from the outer surface of the disposable diaper 100.

  When the unfolded free piece 7 of the post-processing tape 200 is further pulled in the direction D1, the second adhesive surface 12 on the back surface of the base piece 11 is peeled off from the surface of the reinforcing piece 4. Since the release layer is formed on the surface of the reinforcing piece 4, compared with the case where the first adhesive surface 11 on the back surface of the base piece 11 peels from the outer surface of the disposable diaper 100, the second surface on the back surface of the base piece 11. The adhesive surface 12 easily peels from the surface of the reinforcing piece 4. As described above, since the stress against the pulling force of the user is suddenly weakened, the user feels that he is out of time. Therefore, the user can recognize that the post-processing tape has been pulled too much in a direction different from the normal use state, and can weaken the pulling force in a reflective manner.

  FIG. 8 shows an example of the state where the unfolding free piece 7 is pulled in the direction D1 from the state of FIG. 7 and the first adhesive surface 11 and the second adhesive surface 12 on the back surface of the base piece 11 are peeled off. ing. As in the state shown in FIG. 8, even if the first adhesive surface 11 and the second adhesive surface 12 are peeled off, the third adhesive surface 13 on the back surface of the base piece 11 is connected to the back surface of the reinforcing piece 4. Since it is bonded, it has a strong holding force against the force applied from the D1 direction. Further, when the second adhesive surface 12 on the back surface of the base piece 11 is peeled off from the surface of the reinforcing piece 4, the user weakens the pulling force by reflection. It is possible to sufficiently prevent the post-processing tape 200 from peeling from the disposable diaper 100.

  Moreover, since the 4th adhesion surface of the base piece 1 back surface is adhere | attached on the outer surface of the disposable diaper 100, the post-processing tape 200 has a strong holding force also with respect to the tension | pulling from D2 direction. Therefore, even when the development free piece 7 is further pulled in the D2 direction from the state shown in FIG. 8, it is possible to prevent the post-processing tape 200 from being peeled from the disposable diaper 100.

  In addition, this invention is not limited to the post-processing tape mentioned above and the disposable diaper with a post-processing tape, It can apply widely to the adhesive tape which can employ | adopt the said structure, and the target object with an adhesive tape.

  The present invention can be applied to a post-treatment tape for holding the disposable diaper in a rolled state when the disposable diaper is discarded, and a disposable diaper to which the post-treatment tape is attached. Therefore, the present invention can be suitably used in industries related to childcare and nursing care.

DESCRIPTION OF SYMBOLS 1 Base piece 1a Adhesive layer 1b Release layer 2 Middle piece 2a Adhesive layer 2b Release layer 3 Top piece 3a Adhesive layer 4 Reinforcing piece 4a Adhesive layer 4b Release layer 5 Fastening piece 5a Adhesive layer 6 Post-processing tape main body 7 Deployment Free piece 11 First adhesive surface 12 Second adhesive surface 13 Third adhesive surface 14 Fourth adhesive surface 31 Knob portion 41 Third folded portion 42 Folded piece 43 Adhesive surface 51 Base piece adhesive surface 52 Object adhesion Surface 61 First folded part 62 Second folded part 100 Disposable diaper (object)
101 waist elastic material 102 diaper body 103 waist edge 104 back sheet 105 cover sheet 200 post-treatment tape (adhesive tape)

Claims (7)

An adhesive tape adhered to the object (100),
A base piece (1) having an adhesive layer on the back surface which is the surface on the object (100) side;
An intermediate piece (2) continuous with the base piece (1);
Continuing with the intermediate piece (2), it has an uppermost piece (3) having an adhesive layer on the back surface that is the surface on the object (100) side,
The base piece (1), the intermediate piece (2) and the top piece (3) are folded in a Z-shape,
A reinforcing piece (4) that is continuous with the base piece (1) and is disposed between the object (100) and the base piece (1);
The longitudinal length of the reinforcing piece (4) is such that the back surface of the base piece (1) is directly bonded to the object (100) in the vicinity of the connection point with the intermediate piece (2). Shorter than the longitudinal length of the base piece (1),
The reinforcing piece (4) has a pressure-sensitive adhesive layer on the back surface which is a surface to be bonded to the object (100), and a release layer on the surface which is a surface in contact with the base piece (1),
An adhesive tape that holds the object (100) in a rolled state by wrapping the object (100) in a state where the intermediate piece (2) and the uppermost piece (3) are stretched.
The reinforcing piece (4) is configured separately from the base piece (1),
The reinforcing piece (4) has one end that is continuous with the intermediate piece (2) of the base piece (1) and the tip of the other end side folded back toward the surface of the reinforcing piece (4). The pressure-sensitive adhesive tape according to claim 1, wherein the back surface of (4) is adhered to the back surface of the base piece (1).
The back surface of the base piece (1)
In the vicinity of the connection point with the intermediate piece (2), a first adhesive surface (11) that adheres to the object (100),
A second adhesive surface (12) for adhering to the surface of the reinforcing piece (4);
A third adhesive surface (13) that adheres to the back surface of the reinforcing piece (5), and
The pressure-sensitive adhesive tape according to claim 2, further comprising a fourth adhesive surface (14) that adheres to the object (100) in the vicinity of the distal end side of the base piece (1).
The reinforcing piece (4) is integrally continuous with the base piece (1) at one end where the base piece (1) is continuous with the intermediate piece (2).
The pressure-sensitive adhesive tape according to claim 1, wherein the base piece (1), the intermediate piece (2), the uppermost piece (3), and the reinforcing piece (4) are folded four times.
further,
An adhesive layer is provided on the back surface of the intermediate piece (2) on the base piece (1) side,
A release layer is provided on the surface of the base piece (1) which is the surface on the intermediate piece (2) side and the surface of the intermediate piece (2) which is the surface on the uppermost piece (3) side. The adhesive tape according to any one of claims 1 to 4.
further,
One end continuous with the intermediate piece (2) of the base piece (1) is a base piece bonding surface (51) bonded to the surface of the other end, and an object bonding surface bonded to the object (100) The pressure-sensitive adhesive tape according to any one of claims 1 to 5, further comprising a fastening piece (5) including (52).
A disposable diaper with a post-treatment tape to which a post-treatment tape (200) for holding the disposable diaper in a rolled state is disposed when the disposable diaper (100) is disposed;
The post-processing tape (200) is
A base piece (1) having an adhesive layer on the back surface which is the surface of the disposable diaper (100) side;
An intermediate piece (2) continuous with the base piece (1);
Continuing with the intermediate piece (2), and having a top piece (3) having an adhesive layer on the back surface, which is the surface on the disposable diaper (100) side,
The base piece (1), the intermediate piece (2) and the top piece (3) are folded in a Z-shape,
And further comprising a reinforcing piece (4) continuous with the base piece (1) and disposed between the disposable diaper (100) and the base piece (1),
The longitudinal length of the reinforcing piece (4) is such that the back surface of the base piece (1) is directly bonded to the disposable diaper (100) in the vicinity of the connection point with the intermediate piece (2). Shorter than the base piece (1),
The reinforcing piece (4) has a pressure-sensitive adhesive layer on the back surface which is a surface to be bonded to the object (100), and a release layer on the surface which is a surface in contact with the base piece (1),
The disposable diaper with a post-treatment tape that holds the disposable diaper (100) in a rolled state by the uppermost piece (3) and the intermediate piece (2) being stretched.

Images