JP2009172355A - Fastening tape, its manufacturing method, manufacturing apparatus, and tape type diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastening tape used for fastening a front body section to a back body section of a diaper, preventing easy peeling of a base material and a hook material, preventing the easy occurrence of warp and waving at a joining part between the base material and the hook material, and capable of improving the wearing property of the diaper. <P>SOLUTION: The fastening tape 10 is used for fastening the front body section to the back body section of the diaper, and has the base material 48 and a hook material 44 attached to the surface of the base material 48, wherein the respective ends 44a of the hook material are formed with belt-like recessed portions 60 formed by pressing by a prescribed width from the surface side of the hook material 44 toward the side of the base material 48, each recessed portion 60 is formed of a deep recess portion 62 having a deep pressing depth and a shallow recess portion 64 having the pressing depth shallower than the deep recess portion 62, and the deep recess portions 62 and the shallow recess portions 64 are formed at a predetermined repeated pattern. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fastening tape, a method and apparatus for manufacturing the same, and a tape-type diaper. More specifically, the diaper is used to fix the front body and the back body of the diaper, the base material and the hook material are not easily peeled off, and the joint between the base material and the hook material is less likely to be warped or wavy. The present invention relates to a fastening tape capable of improving the wearing feeling, a manufacturing method and a manufacturing apparatus thereof, and a tape-type diaper provided with such a fastening tape.

  In general, a tape-type diaper is arranged so as to cover the surface of the absorbent body 22 and the absorbent body 22, for example, like a tape-type diaper 150 shown in FIG. 20, and at least a top made of a liquid-permeable material. The sheet 18 is disposed so as to cover the back surface of the absorbent body 22 and includes a back sheet 20 made of a liquid-impermeable material, and includes a front body 2, a crotch 4, and a back body 6. The disposable diaper is further provided with a fastening tape 140 arranged to extend from the left and right side edges 6a, 6b of the back body 6 and for fixing the front body 2 and the back body 6 (for example, Patent Literatures 1 to 3).

  According to such a tape-type diaper 150, the excrement of the wearer passes through the liquid-permeable portion of the top sheet 18 (the center sheet 18a in the figure) and is absorbed by the absorber 22, and normally the liquid Leakage to the outside is prevented by the back sheet 20 made of an impermeable material, and excrement can be held inside the diaper. Further, by fixing the front body 2 and the back body 6 of the diaper to each other with the fastening tape 140, there is an advantage that the wearer can easily attach the diaper.

  By the way, conventionally, as a fastening system for a tape-type diaper, an adhesive fastener that is fixed by the adhesive force of an adhesive has been widely used. However, in recent years, a mechanical structure of a convex member (hook member) and a concave member (loop member) is used. Transition to mechanical fasteners (also referred to as planar fasteners) that are fixed by bonding is progressing.

  As shown in FIG. 21, such a fastening tape is formed by attaching the hook material 144 of the mechanical fastener described above to the surface of the base material 148. As for the method of attaching the hook material, for example, a method of applying and bonding an adhesive to the back surface of the hook material, or using a base material whose surface is coated with a thermoplastic resin film as the base material, the above-mentioned adhesive In combination, the end of the hook material is heat-sealed with a certain width and joined to the surface of the base material. FIG. 21 shows an example in which each end portion 144a of the hook material 144 is heat-sealed by being heated and pressed in a band shape from the surface side of the hook material 144 toward the base material 148 side.

JP 2004-201894 A JP 2005-319319 A JP 2005-279005 A

  However, as shown in Patent Literatures 1 and 2, for example, when the end of the hook material is pressed to a uniform depth and pressed against the base material, warping or undulation occurs in the pressed portion of the hook material. There is a problem that the fastening force of the fastening tape is reduced.

  For example, when a fastening tape that has warped or wavy in such a pressed part is used for a tape-type diaper, the fastening tape that fixes the diaper is likely to come off or the feeling of wearing becomes worse. I'm sorry.

  Further, the fastening tape of Patent Document 3 is formed by embossing an identification portion for identifying from a colored side panel. However, since only the identification portion is embossed, the bonding strength of the hook material is low. There is a problem that the hook material is easily detached from the base material.

  The present invention was made to solve such problems of the prior art, and is used to fix the front body and the back body of the diaper, and the base material and the hook material are difficult to peel off, and Fastening tape that is less likely to be warped or wavy at the joint between the base material and the hook material, and can improve the feeling of wearing the diaper, its manufacturing method and manufacturing device, and tape including such a fastening tape A type diaper is provided.

  As a result of intensive studies to solve the problems of the prior art as described above, the inventor has a deep concave portion having a deep pressing depth at each end portion of the hook material, and a pressing depth larger than that of the deep concave portion. The present invention has been completed by conceiving that the above-mentioned problems can be solved by providing concave portions in which shallow shallow concave portions are arranged in a predetermined repeating pattern. Specifically, according to the present invention, the following fastening tape, a manufacturing method and manufacturing apparatus thereof, and a tape-type diaper are provided.

[1] It is used for fixing a front body and a back body of a diaper, and includes a base material and a hook material of a mechanical fastener attached to the surface of the base material, and at each end of the hook material , A belt-shaped concave portion pressed at a predetermined width from the surface side of the hook material toward the base material side is formed, and the concave portion is pressed deeper than the deep concave portion and a deep concave portion having a deep pressing depth. A fastening tape in which shallow recesses having a shallow depth are formed to have a predetermined repeating pattern.

[2] The fastening tape according to [1], wherein each of the deep recess and the shallow recess loses the fastening force of the hook material by the pressing.

[3] The deep recess has lost the fastening force of the hook material due to the pressing, and the shallow recess has the fastening force of the hook material without loss. [1] The fastening tape according to [1].

[4] The fastening tape according to any one of [1] to [3], wherein the hook member is bonded to the base material with an adhesive.

[5] The fastening tape according to any one of [1] to [4], wherein the concave portion is formed only by pressing, heat sealing, or ultrasonic welding.

[6] The fastening tape according to any one of [1] to [5], wherein a width of the concave portion formed in a band shape is 1 to 9 mm.

[7] The concave portion is formed such that at least one of the deep concave portion and the shallow concave portion has a repeated pattern arranged obliquely with respect to the axial direction of the concave portion formed in a band shape. The fastening tape according to any one of 1] to [6].

[8] The above [7], wherein the diagonally arranged repeating pattern is configured such that the direction of the pattern is opposite between one end side and the other end side of the hook material. Fastening tape.

[9] The fastening according to any one of [1] to [8], wherein the back surface of the base material does not have the concave and convex portions of the concave portion on the surface of the hook material, and is configured in a planar shape. tape.

[10] A sheet laminating step of obtaining a long sheet laminate by placing a belt-like long hook material on one surface of the long base sheet along the longitudinal direction of the long base sheet, and obtaining The both side edge portions of the long hook material of the long sheet laminate thus formed are pressed with a predetermined width from the surface side of the long hook material toward the long base material sheet to form a recess. A recess forming step, and a fastening tape separating step of obtaining a plurality of fastening tapes by separating the long sheet laminate formed with the recess with a predetermined width, and in the recess forming step, A method for manufacturing a fastening tape, wherein the concave portion is formed so that a deep concave portion having a deep pressing depth and a shallow concave portion having a shallower pressing depth than the deep concave portion have a predetermined repeating pattern.

[11] The method for manufacturing a fastening tape according to [10], wherein the long base sheet and the long hook material are joined in the sheet stacking step.

[12] The stop according to [10] or [11], wherein in the concave portion forming step, the concave portions are formed by pressurizing, heat sealing, or ultrasonic welding the both side edges of the long hook material. A method for manufacturing a receiving tape.

[13] In the fastening tape separating step, the long sheet laminate in which the recesses are formed is cut so that a cutting locus draws an S-curve along the longitudinal direction of the long sheet laminate. The two fastening tape intermediates are obtained, and the gap between the valleys of the side edges formed in the S-shaped curve and the side edges formed in a straight line of each of the obtained fastening tape intermediates is obtained. The method for producing a fastening tape according to any one of [10] to [12], wherein a plurality of the fastening tapes are obtained by separating.

[14] A sheet laminating unit that forms a long sheet laminate by placing a belt-like long hook material on one surface of the long base sheet along the longitudinal direction of the long base sheet; Protrusions that press both side edges of the long hook material of the long sheet laminate with a predetermined width from the surface side of the long hook material toward the long base sheet side are formed on the pressing surface. A sheet pressing portion having a pressing means, wherein the convex portion of the pressing surface of the pressing means is a high convex portion having a high protruding height and a low convex having a lower protruding height than the high convex portion. The fastening tape manufacturing apparatus which is comprised from the part.

[15] The stop according to [14], wherein the pressing means of the sheet pressing portion includes a pattern roll arranged on the pressing surface so that the high convex portion and the low convex portion have a predetermined repeating pattern. Wearing tape manufacturing equipment.

[16] The pressing means of the sheet pressing unit includes an ultrasonic horn for ultrasonic welding and a receiving roll for the ultrasonic horn, and the pressing of one of the ultrasonic horn and the receiving roll. The fastening tape manufacturing apparatus according to [14], wherein the convex portion is formed on a surface.

[17] The fastening tape manufacturing apparatus according to any one of [14] to [16], wherein the sheet stacking unit includes a joining unit for joining the long base sheet and the long hook material. .

[18] An absorber, a top sheet that is disposed so as to cover the surface of the absorber, and at least a portion that is made of a liquid-permeable material, and a back sheet that is disposed so as to cover the back surface of the absorber. And a back sheet made of a sex material, and is composed of each part of the front body, the crotch part and the back body, and is arranged to extend from the left and right side edges of the back body, the front body and the above A tape-type diaper further comprising a fastening tape for fixing the back body, wherein the fastening tape is the fastening tape according to any one of [1] to [9]. .

[19] The tape-type diaper according to [18], wherein two fastening tapes are arranged on each of the left and right side edges of the back body.

  The fastening tape of the present invention is used to fix the front body and the back body of the diaper, the base material and the hook material are not easily peeled off, and the joint portion between the base material and the hook material is warped and wavy. It is less likely to occur and the feeling of wearing the diaper can be improved.

  Moreover, the manufacturing method of the fastening tape of this invention can manufacture the fastening tape of this invention mentioned above simply and at low cost. Moreover, the fastening tape manufacturing apparatus of this invention can be used suitably for the manufacturing method of the fastening tape of this invention.

  Furthermore, since the tape-type diaper of the present invention is provided with the above-described fastening tape of the present invention, it has a high fastening power, and when the diaper is used repeatedly for a long period of time, or when the wearer turns over. Even when the above operation is performed, a good wearing feeling can be realized.

  Hereinafter, the fastening tape of the present invention, its manufacturing method and manufacturing apparatus, and the best mode for carrying out the tape-type diaper will be specifically described. However, the present invention broadly encompasses fastening tapes, manufacturing methods and apparatuses, and tape-type diapers having the invention-specific matters, and is not limited to the following embodiments.

  In the present specification, “tape-type diaper” means, as in the tape-type diaper 1 shown in FIG. 1, the absorbent body 22, the top sheet 18 at least partly made of a liquid-permeable material, and liquid-impermeable. A back sheet 20 made of material, and composed of a front body 2, a crotch 4 and a back body 6, and arranged so as to extend from the left and right side edges 6 a and 6 b of the back body 6. A disposable diaper further comprising a fastening tape 10 for fixing the back body 6 to the front body 2 is meant.

  In addition, in this specification, “front body” means a part that covers the abdomen (front of the body) of the wearer when a diaper is worn on the wearer, and “inseam” means that the wearer wears a diaper. When the wearer wears a diaper, the part covering the inseam of the wearer means the part covering the back side (back of the body) of the wearer.

[1] Fastening tape:
First, an embodiment of the fastening tape of the present invention will be described. The fastening tape of the present invention is used to fix the front body 2 and the back body 6 of the diaper, like the fastening tape 10 shown in FIGS. And a hook material 44 of a mechanical fastener attached to the surface of 48, and each end portion 44a of the hook material 44 is pressed with a predetermined width from the surface side of the hook material 44 toward the base material 48 side. A band-shaped recess 60 is formed.

  The above-described concave portion 60 is configured by arranging a deep concave portion 62 having a deep pressing depth and a shallow concave portion 64 having a pressing depth shallower than the deep concave portion 62 so as to have a predetermined repeating pattern.

  Such a fastening tape of the present invention is such that the base material and the hook material are not easily peeled off, and the joint portion between the base material and the hook material is less likely to be warped or wavy, for example, the front and back bodies of a diaper When used for fixing the diaper, it is possible to improve the feeling of wearing the diaper.

  Here, FIG. 1 is a partially cutaway cross-sectional view showing an embodiment of a tape-type diaper using the fastening tape of the present invention, where the tape-type diaper is developed and viewed from the top sheet side. FIG. FIG. 2 is an enlarged view showing an embodiment of a tape-type diaper using the fastening tape of the present invention, and is an enlarged view showing a fastening tape portion of the tape-type diaper shown in FIG. FIG. 3 is an enlarged view in which the portion of the fastening tape shown in FIG. 2 to which the hook material is attached is further enlarged. FIG. 4 is a schematic cross-sectional view showing a cross section of the fastening tape shown in FIG. 3 cut along the line A-A ′.

  As long as the above-mentioned recess is formed by compressing the surface side of the hook material and forming the predetermined repeating pattern, for example, even if the hook material and the base material are simply pressure-bonded by applying pressure. Alternatively, the hook material and the base material may be fused by applying heat together with pressure. That is, the hook material may be bonded to the base material with an adhesive or the like, and may further be formed by pressing the both ends of the hook material to form the concave portion. The base material may be joined or temporarily joined, and both end portions of the hook material may be joined again together with the formation of the concave portion by heat sealing or ultrasonic welding.

  Examples of the adhesive for joining the hook material include conventionally known hot melt adhesives.

  As shown in FIGS. 1 to 3, in the fastening tape 10 of the present invention, each of the deep concave portion 62 and the shallow concave portion 64 constituting the concave portion 60 exerts the fastening force of the hook material 44 by pressing when the concave portion 60 is formed. Each is preferably lost.

  With this configuration, the non-fixed portion (the portion where the fixing force is lost) having a predetermined width is formed at both ends of the hook member 44 by the deep concave portion 62 and the shallow concave portion 64 (that is, the entire concave portion 60). And the hook material 44 is less likely to be detached from the base material 48.

  That is, when the hook member 44 is bonded, the bonding strength (peel strength) of the hook member 44 can be increased as the width of the non-fixed portion at the both end portions is wider. For this reason, it is possible to improve the bonding strength of the hook member 44 while making the hook member 44 less likely to warp or undulate by making the deep recess 62 and the shallow recess 64 lose their fastening force.

  Further, with this configuration, for example, even when the leading end portion of the fastening tape 10 is bent inward and engaged with the hook member 44, the leading end portion of the fastening tape 10 is It is easy to pick and the front end portion of the engaged fastening tape 10 can be easily peeled off from the hook material 44.

  For example, when the hook material has a plurality of protrusions (hereinafter also referred to as pins) like a mechanical fastener, it is preferable that the pin is pressed and plastically deformed to form a recess. Although not particularly limited, in the fastening tape of the present invention, as described above, when the shallow concave portion of the concave portion loses the fastening force, from the protruding end of the pin constituting the hook material. The ratio ((H1-H2) / L) of the difference (H1-H2) between the pressing depth (H1) of the deep recess and the pressing depth (H2) of the shallow recess with respect to the length (L) to the root, It is preferably 0.1 to 0.8, more preferably 0.15 to 0.75, and particularly preferably 0.2 to 0.5. The above-mentioned “length from the tip of the pin to the root” means that no stress is applied to the tip of the pin and the pin is not plastically deformed (ie, before pressing). The length of the pin. The “pressing depth” refers to the distance from the tip of the pin in the state before pressing to the surface (bottom surface) of the recess plastically deformed by pressing.

  Thus, by setting the ratio ((H1-H2) / L) to 0.8 or less, the shape of the pin constituting the hook material in the shallow recess is not maintained, and pain is felt when hitting the skin. Can be eliminated. On the other hand, by setting the ratio ((H1-H2) / L) to 0.1 or more, warping and undulation of the hook material can be effectively prevented.

  The concave portion is preferably formed in a band shape having a constant width in view of difficulty in peeling of the joined hook material and ease of manufacture. The width of the recess is not particularly limited. As described above, when the shallow recess loses the fastening force, it is formed in a strip shape, although it depends on the width and size of the hook material itself. The width of the recessed portion is preferably 1 to 9 mm, more preferably 2 to 8 mm, and particularly preferably 3 to 7 mm.

  By comprising in this way, sufficient fastening force can be left to a hook material. In addition, when the pressing is performed by heat sealing or ultrasonic welding, sufficient bonding strength by heat sealing or the like can be expressed.

  In addition, although it does not specifically limit, For example, the said recessed part may be formed so that it may protrude in the base material side which attached the hook material from each edge part of a hook material. By configuring in this way, the hook material and the base material are pressed by the concave portion, particularly the deep concave portion, so that the adhesive force between the hook material and the base material can be further improved. In such a case, it is preferable that the deep concave portion of the hook material is formed by being pressed to a depth reaching the surface side of the base material.

  In addition, if the said recessed part is comprised from the deep recessed part and the shallow recessed part, for example, the shallow recessed part may have, without losing the fastening force of a hook material. By configuring in this way, the shallow concave portion can be fixed to the fixing portion such as the front patch, and can be fixed using a wide range of the hook material.

  In addition, for example, when bonding is performed by heat sealing or ultrasonic welding, for example, warping or undulation caused by a difference in shrinkage due to heat between the hook material and the base material has a shallow pressing depth, and the hook material It is relieved by the shallow concave portion having a high degree of freedom at the time of joining to the base material, and the occurrence of warpage, undulation, wrinkles and the like can be effectively suppressed.

  Further, the fastening tape 10 of the present invention has a difference in the strength of the joining portion due to the above-described repetitive pattern in the strip-shaped recess 60, so that a part of the recess 60 (for example, one of the edges) is peeled off. Even if there is nothing, it is possible to effectively avoid the situation where the peeling reaches the entire recess 60.

  In addition, the concave part of such a fastening tape is, for example, a pattern roll in which a convex part corresponding to the arrangement pattern of the deep concave part and the shallow concave part is formed on the pressing surface as a pattern roll that presses the surface side of the hook material. It can be formed by using.

  As a specific pattern roll configuration, for example, on the pressing surface, a high convex portion corresponding to the deep concave array pattern (inverted shape of the deep concave portion) and a low convex portion corresponding to the shallow concave array pattern (shallow). Inverted shape of the concave portion) and a convex portion formed from the concave portion can be mentioned. By using such a pattern roll, a deep concave portion is formed by the high convex portion, and a shallow concave portion is formed by the low convex portion.

  Further, when the concave portion of the fastening tape is formed by ultrasonic welding, a deep concave portion is formed on one pressing surface of the ultrasonic horn for ultrasonic welding and the receiving roll as a receiving base for the ultrasonic horn. It is preferable to use a projection formed of a high convex portion corresponding to the above and a low convex portion corresponding to the shallow concave portion. In addition, since it is usually preferable that the pressing surface of the ultrasonic horn is a plain surface, it is more preferable to form the convex portion on the pressing surface of the receiving roll of the ultrasonic horn. In such a case, the ultrasonic horn is disposed on the back surface side of the substrate, and the ultrasonic horn receiving roll is disposed on the front surface side of the hook material to perform ultrasonic welding. As the receiving roll of the ultrasonic horn having a convex portion formed on the pressing surface, for example, a receiving roll having the same configuration as the above-described pattern roll can be suitably used. Moreover, as an ultrasonic horn, a roll-shaped ultrasonic horn can also be used and a fixed-type ultrasonic horn which is not a roll can also be used.

  As shown in FIGS. 3 and 4, the back surface of the base material 48 that constitutes the fastening tape 10 is preferably configured to have a flat surface without any pressing unevenness on the surface of the hook material 48. .

  When only the back surface of the base material is made flat, when pressing the base material and the hook material, for example, as a pattern roll that presses the front surface side of the hook material, the arrangement pattern of deep recesses and shallow recesses A plain roll having a flat surface may be used as a roll that presses the back side of the substrate using a pattern roll having a corresponding convex portion.

  In the fastening tape of the present invention, a loop material that can be fastened to the hook material (hereinafter sometimes referred to as “back surface side loop material”) may be attached to the back surface of the base material.

  It is preferable that this back surface side loop material is joined after forming the said recessed part in the back surface side of the base material with which the hook material was attached. The back surface side loop material can be bonded using a hot melt adhesive or the like.

  With this configuration, for example, as shown in FIG. 5, a tape-type diaper in which two fastening tapes 10x and 10y of the present invention are arranged on each of the left and right side edges 6a and 6b of the back body 6. 1, one fastening tape 10 x at each side edge 6 a, 6 b is fastened to the front patch 12, and the other fastening tape 10 y is fastened to the front patch 12. It can also be fixed to the back side loop material on the back side.

  Such a fastening tape is excellent in that the tape position and the tightening degree can be adjusted in accordance with the wearer's body shape, specifically, the waist circumference and leg circumference dimensions.

  Here, in the tape-type diaper 1 shown in FIG. 5, two fastening tapes 10 of the present invention are arranged on each of the left and right side edges 6a, 6b of the back body 6 (fastening tape 10x, 10y).

  For example, when a back surface side loop material is attached to the back surface of the base material or the back surface of the base material, if unevenness corresponding to the concave portion of the hook material appears on the surface of the back surface side loop material, When another fastening tape is fastened to the back surface of the tape, sufficient fastening force may not be obtained due to the unevenness, and the other fastening tape may easily come off.

  In the fastening tape of the present invention, the ratio (S1 / (S1 + S2)) of the total area S1 of the deep recess to the total area (S1 + S2) of the total area S1 of the deep recess and the total area S2 of the shallow recess. 0.4 to 0.9, more preferably 0.5 to 0.8, and particularly preferably 0.6 to 0.7.

  By configuring in this way, it is possible to effectively suppress warping and undulation of the hook material while maintaining sufficient bonding strength between the hook material and the base material.

  There is no restriction | limiting in particular about the arrangement pattern of the deep recessed part and shallow recessed part which comprise a recessed part, What is necessary is just to have a fixed repeating pattern. For example, in addition to the stripe shape as shown in FIG. 3, the shapes as shown in FIGS.

  3 shows an example of the fastening tape 10 in which the deep concave portion 62 and the shallow concave portion 64 are repeatedly formed in the strip-shaped concave portion 60 in an oblique stripe shape, and FIG. 6 shows a fishbone shape in the strip-shaped concave portion 60a. An example of a fastening tape 10a is shown in which a shallow fish-like recess 64a is formed and the other part of the recess 60a becomes a deep recess 62a.

  7 shows an example of the fastening tape 10b in which the dot-shaped shallow recess 64b is formed in the strip-shaped recess 60b and the other part of the recess 60b becomes the deep recess 62b, and FIG. That is, the deep recesses 62c and the shallow recesses 64c arranged in the strip-shaped recess 60c so as to be perpendicular to the longitudinal direction of the recess from one side edge side to the other side edge side of the strip-shaped recess alternately in the longitudinal direction of the recess. The example of the fastening tape 10c formed in is shown.

  Further, FIG. 9 shows an example of a fastening tape 10d in which V-shaped deep recesses 62d and shallow recesses 64d are alternately formed in the longitudinal direction of the recesses in the strip-shaped recess 60d, and FIG. An example of the fastening tape 10e is shown in which a cross-shaped shallow concave portion 64e is formed in the concave portion 60e, and another portion of the concave portion 60e becomes a deep concave portion 62e.

  Even if the deep recesses and the shallow recesses are arranged so as to have a repeating pattern of the shape as shown in FIGS. 6 to 10, the same effect as that of the fastening tape shown in FIG. 3 can be obtained. it can.

  The fastening tape has such a shape that each deep recess and shallow recess intersect the longitudinal axis of the recess from one side edge side to the other side edge side of the belt-like recess. Is preferred. Furthermore, as shown in the fastening tape shown in FIG. 3, it is more configured to have a repeating pattern in which deep concave portions and shallow concave portions are arranged obliquely with respect to the longitudinal axis of the belt-like concave portion. preferable. That is, it is preferable that the deep recess and the shallow recess are configured to have an oblique stripe-like repeated pattern with respect to the longitudinal axis of the strip-shaped recess.

  By configuring in this way, for example, dust and debris generated when the hook material is pressed are less likely to be caught on the pressing surface of the pattern roll or the like used when forming the recess, and the productivity of the fastening tape is improved. . Further, even when dust is caught between pressing surfaces such as the pattern roll, it can be easily removed.

  In addition, when at least one of the deep concave portion and the shallow concave portion has a repeating pattern arranged obliquely with respect to the axial direction of the strip-shaped concave portion, the hook material is detached from the base material. The effect which suppresses can also be expected.

  In addition, in the fastening tape of the present invention, when it has a repeating pattern in which at least one of the deep recesses and the shallow recesses is diagonally arranged as described above, for example, the fastening tape 10f shown in FIG. In this way, the repeated pattern arranged diagonally has a pattern direction opposite to that of the recess 60f on one end side of the hook member 44 and the recess 60f on the other end side (that is, the diagonal direction is It is particularly preferable that it is configured to be in the reverse direction. By configuring in this way, warpage, waviness, wrinkles and the like are less likely to occur in the hook material.

  In addition, in the fastening tape of the present invention, in addition to the recesses formed at both ends of the hook material, another recess (hereinafter sometimes referred to as a “center recess”) is formed in a part of the central portion of the hook material. May be formed.

  For example, as shown in FIG. 12, a part of the central portion of the hook material 44 is pressed in a dot shape at a predetermined interval in parallel with the belt-shaped concave portion 60f. The fastening tape 10g in which the central recess 61a is formed, or a central recess 61b in which a part of the central portion of the hook member 44 is pressed with a predetermined width in parallel with the belt-like recess 60f as shown in FIG. The fastening tape 10h on which is formed can be mentioned.

  By forming the central concave portion, it is possible to effectively prevent the central portion of the hook material from being lifted, warped, and wavy.

  The shape of the central concave portion is not particularly limited. For example, as shown in FIG. 12, the central concave portion is pressed in two rows in a zigzag pattern at predetermined intervals in parallel with the strip-shaped concave portion 60f. 61a can be mentioned as a suitable example. By comprising in this way, the effect by the center recessed part 61a mentioned above can be expressed efficiently, without reducing the fastening force of the center part of the hook material 44 significantly.

  Although there is no restriction | limiting in particular about the pressing depth of this center recessed part, It is preferable that it is what was pressed by the pressing force of the grade which can press the center part of a hook material with a base material by a center recessed part. Specifically, the pressing depth from the pressing depth of the shallow recess to the pressing depth of the deep recess is preferable, and the pressing depth is more preferably the same as the pressing depth of the deep recess.

  The “hook material” is a convex member of a mechanical fastener (also referred to as a planar fastener) and can be fixed by mechanical coupling with a loop material that is a concave material. This hook material is attached to the surface of the base material. As the “hook material”, for example, a material having a large number of protrusions (such as a bowl shape, a mushroom shape, a bowl shape) formed on the surface thereof is used.

  On the other hand, as the “loop”, those having loop-like fibers arranged on the surface are often used. In this fastener, the hook material is overlapped on the surface of the loop material, and a large number of protrusions of the hook material are engaged with the surface of the loop material, so that both members can be peeled and firmly fixed. it can.

  For example, in the tape-type diaper 1 shown in FIG. 1, a hook material 44 of a mechanical fastener is attached to the base material 48 of the fastening tape 10. On the other hand, the front body 12 is provided with a front patch 12 made of a loop material 52 of a mechanical fastener, and is configured so that the hook material 44 can be fixed.

  With such a configuration, the back body 6 of the diaper can be fixed to the front body 2, and the diaper can be worn by the wearer. FIG. 5 is a diagram illustrating a usage state of the tape-type diaper 1 illustrated in FIG. 1, and illustrates a state where the tape-type diaper 1 is attached to the wearer using the fastening tape 10.

  Such a hook material is not particularly limited as long as it can be compressed by pressing to form the specific repeating pattern as described above. Examples of the material include polyolefin (polyethylene). , Polypropylene, etc.), polyester, aliphatic polyamide (so-called nylon), and other synthetic fibers made of thermoplastic resins can be used. In particular, polyethylene and polypropylene can be preferably used. When such a material is formed, for example, by using a heated pattern roll, the formation of the recess and bonding to the base material by heat sealing can be performed simultaneously.

  The “base material” functions as a main body of the fastening tape 10 by attaching a hook material and fixing the fastening tape 10 to the left and right side edges 6 a and 6 b of the back body 6.

  As the base material, sheet materials made of various nonwoven fabrics such as spunbond, SMS (spunbond / meltblown / spunbond), SMMS (spunbond / meltblown / meltblown / spunbond), card embossing, resin bond, etc. are used. be able to. In view of strength, it is preferable to use a sheet material made of a spunbonded nonwoven fabric.

  Examples of the constituent material of the nonwoven fabric include synthetic fibers made of polyolefin (polyethylene, polypropylene, etc.), polyester, aliphatic polyamide (so-called nylon), and other thermoplastic resins. In this case, the synthetic fiber may be a single fiber or a composite fiber having a core-sheath structure or the like. In general, when a single fiber is used, polyolefin is often used, but it is also preferable to use polyester in consideration of strength.

  Moreover, the laminated body which laminated | stacked the some nonwoven fabric and film can also be used as a raw material of a base material. In the case of using a laminate of films, when a non-woven fabric or loop material (back surface side loop material) that is easily engaged with the hook material is disposed on the surface opposite to the surface on which the hook material is disposed, as shown in FIG. The other fastening tape 10y can be fastened to the back side of one fastening tape 10x.

[2] Manufacturing method of fastening tape:
Next, an embodiment of a method for producing a fastening tape of the present invention will be described. The method for producing a fastening tape of the present invention comprises a long sheet laminate in which a belt-like long hook material is placed on one surface of a long base sheet along the longitudinal direction of the long base sheet. And pressing both side edges of the long hook material of the obtained long sheet laminate with a predetermined width from the surface side of the long hook material toward the long base sheet side. A recess forming step for forming a recess, and a fastening tape separating step for obtaining a plurality of fastening tapes by separating the long sheet laminate formed with the recess with a predetermined width. The concave portion is formed so that a deep concave portion having a deep pressing depth and a shallow concave portion having a shallower pressing depth than the deep concave portion have a predetermined repeating pattern.

  By comprising in this way, the fastening tape of this invention demonstrated until now can be manufactured simply and at low cost.

  Hereinafter, the example which manufactures a fastening tape using the fastening tape manufacturing apparatus shown in FIG. 14 is demonstrated more concretely for every process. Here, FIG. 14 is an explanatory view schematically showing a configuration of a fastening tape manufacturing apparatus used in the method for manufacturing a fastening tape of the present invention, and FIG. 15 is a diagram of the fastening tape manufacturing apparatus shown in FIG. It is a partial schematic perspective view which expands and shows the part shown to B (sheet press part vicinity).

[2-1] Sheet lamination step:
When manufacturing the fastening tape of the present invention, first, as shown in FIG. 14, a long base sheet 78 is prepared, and a long base sheet is provided on one surface of the long base sheet 78. A belt-like long hook material 74 is placed along the longitudinal direction of 78 to obtain a long sheet laminate 71.

  In the case of forming the long sheet laminate 71, it is preferable that the long base sheet 78 and the long hook material 74 are previously bonded or temporarily bonded by an adhesive 92 as shown in FIG. In the fastening tape manufacturing apparatus 90 shown in FIG. 14, an adhesive 92 is applied to the back surface of the long hook material 74 by the adhesive applying means 94, and the back surface on which the adhesive 92 is applied is a long base sheet 78. The long sheet laminate 71 is formed so as to overlap with each other.

[2-2] Concave formation step:
Next, as shown in FIGS. 14 and 15, both side edge portions 74 a of the long hook material 74 of the obtained long sheet laminate 71 are moved from the surface side of the long hook material 74 to the long base sheet 78. A concave portion 80 is formed by pressing toward the side with a predetermined width (recess forming step).

  The recess 80 described above can be formed by using, for example, a pattern roll 98 as shown in FIGS. 17 and 18 in which a protrusion 99 corresponding to the shape of the recess is formed on the pressing surface. That is, the convex portion 99 on the pressing surface of the pattern roll 98 has a predetermined convex pattern in which a high convex portion 99a having a high protruding height and a low convex portion 99b having a lower protruding height than the high convex portion 99a have a predetermined repeating pattern. The arrangement is as follows. Here, FIG. 17 is a plan view schematically showing the configuration of the pattern roll used for forming the recess, and FIG. 18 is a partial plan view showing the portion indicated by C of the pattern roll shown in FIG. FIG.

  In such a pattern roll 98, the convex portions 99 are formed on both sides of the pressing surface, and no protruding portion (convex portion) is formed on at least a part of the central portion of the pressing surface of the pattern roll 98. In the region where the protruding portion is not formed, the pin constituting the long hook material 74 is not crushed, so that a fastening region where the fastening force is not lost is secured in the central portion of the long hook material 74. can do.

  As shown in FIGS. 14 and 15, in the recess forming step, a plain roll 100 having a flat contact surface with the long base sheet 78 is used as a roll for pressing the back side of the long base sheet 78. It is preferable to use it.

  When joining the long base material sheet 78 and the long hook material 74 in the recess forming step, the long base material sheet 78 and the long hook material 74 are heated by heating the pattern roll 98 and the plain roll 100. And heat seal.

  On the other hand, when the long base sheet 78 and the long hook material 74 have already been joined, the pattern roll 98 and the plain roll 100 do not necessarily have to be heated. It is also possible to compress the side edge portions 74a of the material 74 to form the concave portions 80 having a predetermined repeated pattern.

  In the manufacturing method of the present invention, for example, as shown in FIG. 16, the ultrasonic horn 96 for ultrasonic welding and a receiving roll for the ultrasonic horn are provided. You may form a recessed part by the press means 95 by which the convex part comprised from the high convex part corresponding to a deep recessed part and the low convex part corresponding to a shallow recessed part was formed in one press surface. In addition, in the fastening tape manufacturing apparatus 90a shown in FIG. 16, the pattern roll 98 by which the convex part was formed in the press surface is used as a receiving roll of an ultrasonic horn. Here, FIG. 16 is explanatory drawing which shows typically the other structure of the fastening tape manufacturing apparatus used for the manufacturing method of the fastening tape of this invention.

  In the manufacturing method of the present invention, as described above, the deep concave portion and the shallow concave portion are not formed simultaneously with the pair of pressing rolls or the ultrasonic horn and the receiving roll, but the deep concave portion and the shallow concave portion. Can be formed separately.

  Specifically, for example, first, both side edges of the long hook material are pressed to a constant width at the depth of the shallow recess, and then the portion corresponding to the deep recess is pressed deeper than the shallow recess. May be pressed to form a repetitive pattern consisting of deep recesses and shallow recesses.

  In addition, in this recess forming step, in addition to the recesses 80 formed on both side edges 74a of the long hook material 74, another recess (central recess 81) is formed in a part of the central portion in the longitudinal direction of the long hook material. ) May be formed.

  When forming such a central concave portion, as shown in FIGS. 17 and 18, a central convex portion 101 corresponding to the formation pattern of the central concave portion 81 is formed as the pattern roll 98 separately from the convex portion 99. The patterned roll 98 may be used. By comprising in this way, the recessed part 80 of the both-sides edge part 74a of the elongate hook material 74 and the center recessed part 81 of a center part can be formed simultaneously.

  In addition, when the pattern roll 98 used in the concave portion forming step has the convex portion 99 and the central convex portion 101 as described above, a non-protruding portion between the convex portion 99 and the central convex portion 101, and When the central convex portion 101 has two or more rows of protruding portions parallel to the convex portion 99, a non-projecting portion between the central convex portions 101 prevents a fastening region where the fastening force is not lost. Can be secured.

  In addition, it is preferable that this pattern roll 98 is divided | segmented in the center part, and is comprised so that adjustment of the space | interval of the convex part 99 of both sides is possible. By configuring in this way, the width of the pattern roll 98 can be adjusted in accordance with the width of the long hook material, the fine position of the recessed portion formed in the long hook material, and the long hooks having different widths can be adjusted. It is possible to adjust the position of the convex portion 99 according to the material.

  This central convex part does not necessarily have to be formed at the same time as the concave parts on both side edges of the long hook material, and the central convex part is formed using another pattern roll before the concave part is formed or after the concave part is formed. May be. Moreover, this center convex part can also be formed by ultrasonic welding.

[2-3] Fastening tape separation step:
Next, a plurality of fastening tapes are obtained by separating the long sheet laminate formed with the recesses with a predetermined width (fastening tape separating step). According to the method as described above, a large number of fastening tapes can be produced simply and efficiently.

  For example, as shown in FIG. 15, the fastening tape separating step cuts the long sheet laminate 71 so that the cutting locus draws an S-curve along the longitudinal direction of the long sheet laminate 71. Thus, two fastening tape intermediate bodies 72 are obtained, and between the valley portions of the side edges formed in the S-curve shape of the obtained fastening tape intermediate bodies 72 and the side edges formed in a straight line. A method of obtaining a plurality of fastening tapes 10 can be mentioned by cutting off the.

  In addition, as a cutting method of this sheet | seat, the method of cut | disconnecting in the S shape so that the locus | trajectory of the said cutting may straddle the elongate hook material 74 in the width direction can be mentioned. By configuring in this way, the hook members each having the concave portion 80 composed of the deep concave portion 82 and the shallow concave portion 84 are formed on the side of the mountain portion formed in the S-shaped shape of each fastening tape intermediate body 72. Will be placed.

  The cutting of the long sheet laminate 71 is not particularly limited as long as it is cut into a continuous shape. Usually, as shown in FIG. 15, the locus is a continuous S-shape, that is, a periodic wave shape. It is preferable to cut so that This makes it possible to obtain a large number of fastening tapes at a time.

  When each fastening tape intermediate is obtained in this manner, a side edge valley formed in an S-curve shape and a side edge formed linearly in each obtained fastening tape intermediate A plurality of fastening tapes are obtained by separating the gaps. According to the method as described above, a large number of fastening tapes can be produced simply and efficiently.

  Specifically, as shown in FIG. 19, the gap between the side edge trough portion 102 formed in the S-curve shape of each fastening tape intermediate body 72 and the side edge 104 formed linearly is cut off. Thus, a plurality of fastening tapes 70 are obtained. In the example shown in the figure, between the valleys 102 of the side edges formed in the S-curve shape of each fastening tape intermediate body 72 and the side edges 104 formed in a straight line, in the direction orthogonal to the side edges 104. A plurality of fastening tapes 70 are obtained by separating them.

  A plurality of fastening tapes can be obtained by separating the fastening tape intermediate in this way. However, it is preferable to temporarily fix the hook material and the fastening tape prior to the “separation”. This is because, when the fastening tape having a free end is in a floating state, there is a possibility that the free end may cause problems such as being caught in a manufacturing facility when continuous production is performed.

  For example, the fastening tape intermediate is folded back so that the hook material is on the inside between the portion where the hook material is attached and the side edge formed in a straight line, and the hook material is placed on the surface of the long base sheet. After temporarily fixing, it is preferable to separate between the valley portion of the side edge formed in the S-curve shape and the side edge formed in the linear shape. Folding work for multiple fastening tapes at once and continuously by temporarily fastening between the valleys of the side edges formed in an S-shaped curve and the side edges formed in a straight line Compared to the case where the folding operation is performed after “separation”, the folding operation can be performed stably and efficiently.

  In the manufacturing method shown in FIG. 19, the fastening tape intermediate body 72 is folded back so that the hook material 84 is on the inner side between the portion where the hook material is attached and the side edge 104 formed linearly. 84 is temporarily fixed to the surface of the long base material sheet 78 (temporary fixing portion 86), and then, between the valley portion 102 of the side edge formed in the S-curve shape and the side edge 104 formed in the linear shape. This is an example where

[3] Fastening tape manufacturing equipment:
Next, an embodiment of the fastening tape manufacturing apparatus of the present invention will be described. The fastening tape manufacturing apparatus of this invention is a manufacturing apparatus used for the manufacturing method of the fastening tape demonstrated until now.

  That is, as shown in FIGS. 14 and 15, the fastening tape manufacturing apparatus of the present invention has a belt-like long hook on one surface of the long base sheet 78 along the longitudinal direction of the long base sheet 78. The sheet stacking part 122 for placing the material to form the long sheet laminate 71 and the side edge portions 74a of the long hook member 74 of the long sheet laminate 71 are extended from the surface side of the long hook member 74. A sheet pressing portion 124 having pressing means 95 (pattern roll 98 in FIGS. 14 and 15) having a convex portion 99 that is pressed on the pressing surface with a predetermined width toward the scale substrate sheet 78 side. I have.

  In the fastening tape manufacturing apparatus of the present invention, the convex portion of the pressing surface of the pressing means is composed of a high convex portion having a high protruding height and a low convex portion having a lower protruding height than the high convex portion. Yes. For example, the convex part 99 of the pattern roll 98 shown in FIGS. 17 and 18 has a predetermined repeating pattern in which a high convex part 99a having a high projecting height and a low convex part 99b having a projecting height lower than the high convex part 99a. Are arranged so as to have

  In addition, as a press means of the fastening tape manufacturing apparatus of this invention, you may form the said recessed part by ultrasonic welding, for example. For example, the fastening tape manufacturing apparatus 90a shown in FIG. 16 has an ultrasonic horn 96 for ultrasonic welding and a receiving roll for the ultrasonic horn as the pressing means 95, and on the pressing surface of the receiving roll for the ultrasonic horn. A high convex portion corresponding to the deep concave portion and a low convex portion corresponding to the shallow concave portion are formed (pattern roll 98). In addition, as shown in FIG. 16, the convex part for forming the concave part is formed on the receiving roll (pattern roll 98) of the ultrasonic horn so that the ultrasonic welding can be satisfactorily performed. Although not shown in the drawings, a convex portion may be formed on the pressing surface of the ultrasonic horn, and ultrasonic welding may be performed by arranging the ultrasonic horn on the surface side of the hook material. Moreover, in FIG. 16, although the example using the fixed ultrasonic horn 96 is shown, you may use a roll-shaped ultrasonic horn, for example.

  By using a fastening tape manufacturing apparatus such as these, a fastening tape in which a recess composed of a deep recess and a shallow recess is formed at each end of the hook material can be manufactured easily and at low cost. Can do.

[3-1] Sheet lamination part:
The sheet lamination part is to form a long sheet laminate by placing a band-like long hook material along the longitudinal direction of the long base sheet on one surface of the long base sheet, Such a sheet | seat lamination | stacking part can use what is comprised similarly to the sheet | seat lamination | stacking part which mounts a long hook material on a long base material sheet in the conventional fastening tape manufacturing apparatus. For example, as shown in FIGS. 14 and 15, a long base sheet supply roll 118 capable of continuously feeding out a long base sheet 78 and a long hook capable of continuously feeding out a long hook material 74. Support for placing the long hook material 74 on one surface side of the long base material sheet 78 by guiding the long hook material 74 to one surface side of the material supply roll 114 and the long base material sheet 78 The thing which has the roll 116 can be mentioned.

  Moreover, in the fastening tape manufacturing apparatus of this invention, you may further have a joining means for joining a long base material sheet and the long hook material mounted on the surface. As such a joining means, for example, an adhesive applying means 94 for applying an adhesive 92 to the back surface of the long hook material 74 can be cited as in the fastening tape manufacturing apparatus 90 shown in FIG.

  The joining means is not limited to the adhesive applying means as long as it can join the long base sheet and the long hook material placed on the surface thereof. Moreover, in the fastening tape manufacturing apparatus of this invention, it may be comprised so that a long base material sheet and a long hook material may be joined in the sheet | seat press part which forms a recessed part, for example. For this reason, the sheet laminate portion may not have the above-described joining means, and may simply form a long sheet laminate by superimposing a long base sheet and a long hook material.

[3-2] Sheet pressing part:
The sheet pressing portion presses both side edges of the long hook material of the long sheet laminate by pressing means having convex portions formed on the pressing surface, and the arrangement pattern of the convex portions is arranged on both side edges of the long hook material. It is engraved on the part.

  Specifically, the fastening tape manufacturing apparatus 90 shown in FIGS. 14 and 15 is configured so that both side edge portions 74 a of the long hook material 74 of the long sheet laminate 71 are elongated from the surface side of the long hook material 74. The concave portion 80 is formed by pressing the substrate sheet 78 with a predetermined width. For this reason, the sheet pressing part 124 has a pressing roll (pattern roll 98) in which a convex part corresponding to the shape of the concave part 80 is formed on the pressing surface. As this pattern roll 98, as shown in FIG.17 and FIG.18 demonstrated with the manufacturing method of the fastening tape of this invention mentioned above, it is higher than the high convex part 99a with high protrusion height, and the high convex part 99a. The pattern roll 98 in which the convex part 99 comprised so that the low convex part 99b with low protrusion height may have a predetermined repeating pattern can be mentioned as a suitable example.

  Further, as a roll for forming a concave portion which is a pair of the pattern roll 98, for example, as shown in FIGS. 14 and 15, a plane roll 100 having a flat contact surface with the long base sheet 78 is preferable. Can be mentioned.

  Furthermore, although illustration is abbreviate | omitted, a sheet | seat press part heats a pattern roll and a plain roll so that a long base material sheet and a long hook material can be heat-sealed and joined with formation of a recessed part. You may further have a heating means. By comprising in this way, a long base material sheet and a long hook material can be joined (fused) by a recessed part simultaneously with formation of a recessed part.

  As the heating means, a heating means used in a conventionally known heat sealing apparatus can be suitably used. The heating temperature should just be what can heat the roll (pattern roll 98, plain roll 100) for a recessed part formation to the temperature which can heat-seal a long base material sheet and a long hook material.

  The arrangement pattern of the high and low convex portions of the pattern roll, and the height and width of each convex portion are not particularly limited, and are appropriately determined according to the shape of the repeated pattern of the concave portions in the fastening tape to be manufactured. Can do. In other words, the inverted shape of the repeated pattern of the concave portions in the fastening tape becomes the array pattern of the convex portions of the pattern roll.

  Further, for example, as shown in FIGS. 17 and 18, the pattern roll is formed with a central convex portion 101 corresponding to the formation pattern of the central concave portion 81 (see FIG. 15) separately from the convex portion 99. It may be. In addition, the code | symbol 97 in FIG. 17 shows the pattern roll support body for supporting the pattern roll 98 rotatably. The pattern roll support 97 supports the rotation axis of the pattern roll 98, and when the pattern roll 98 is configured to be split at the center portion, the pattern roll support 97 is moved left and right, The position of the convex part 99 of the pattern roll 98 can be adjusted.

  Further, when the pressing means is composed of an ultrasonic horn for ultrasonic welding and a receiving roll for the ultrasonic horn, any of the conventionally known ultrasonic horn and a receiving roll that serves as a receiving base for the ultrasonic horn. It is possible to suitably use the pressing surface having a convex portion corresponding to the shape of the concave portion. In addition, in the fastening tape manufacturing apparatus 90a shown in FIG. 16, the pattern roll 98 is used as a receiving roll. In addition, about the shape of the convex part of a press surface, it can select suitably according to the shape of the recessed part to form. The ultrasonic horn has a vibrator that converts electrical energy into mechanical vibration energy. The mechanical vibration energy converted by the vibrator is transferred from the pressing surface of the ultrasonic horn to the object to be joined (that is, a long length). Can be transferred to the boundary surface between the hook member and the long base sheet), and the object to be joined can be fused by frictional heat generated on the boundary surface. In the fastening tape manufacturing apparatus of the present invention, pressure is applied when the joined body is melted, and the shape of the convex portion of the pressing surface of the ultrasonic horn is engraved on both side edges of the long hook material.

  In addition, there is no restriction | limiting in particular about the conditions of the ultrasonic welding by an ultrasonic horn, Ultrasonic welding can be performed according to conventionally well-known ultrasonic welding conditions (for example, the amplitude of an oscillator, pressing pressure, etc.).

[3-3] Other configuration of the fastening tape manufacturing apparatus:
The fastening tape manufacturing apparatus of the present invention is not particularly limited as long as it includes the sheet lamination part and the sheet pressing part described so far, and constitutes a conventionally known fastening tape manufacturing apparatus. It may be further provided with other components.

  For example, the tape manufacturing apparatus 90 shown in FIG. 14 draws an S-shaped curve along the longitudinal direction of the long sheet laminate 71 after forming the recess 80 by the sheet pressing portion 124. A sheet cutting part 126 that cuts in the manner described above, and a sheet cutting part 128 that cuts between the valleys of the side edges formed in an S-shaped curve and the side edges formed in a straight line. .

  The sheet cutting part 126 of the fastening tape manufacturing apparatus 90 shown in FIG. 14 is formed in a straight line with a portion provided with a cutting means 132 such as a cutter for cutting the long sheet laminate 71 into an S-shape and a hook material 84. A folding means 134 that folds back the hook material 84 between the side edge 104 and the temporary fastening means 136 that temporarily fastens the folded hook material 84 to the surface of the long base sheet 78. Yes. The temporary fixing means 136 includes a pair of temporary fixing rolls 136a and 136b formed with at least one unevenness for pressing a part of the folded hook member 84 against the surface of the long base sheet 78. Have.

  Further, the sheet separating portion 128 has a separating means 138 such as a cutter for separating between a valley portion of a side edge formed in an S-shaped curve and a side edge formed in a linear shape.

[4] Tape-type diapers:
The tape-type diaper of the present invention includes the above-described fastening tape of the present invention as the fastening tape. More specifically, the absorber is disposed so as to cover the surface of the absorber, and is disposed so as to cover at least a part of the liquid-permeable material and the back surface of the absorber. A back sheet made of a permeable material, and is composed of each part of the front body, the crotch part, and the back body, and is arranged so as to extend from the left and right side edges of the back body. Is a tape-type diaper that is the above-described fastening tape of the present invention.

[4-1] Fastening tape:
If the tape type diaper of this invention is provided with the fastening tape of this invention already demonstrated as the fastening tape, there will be no restriction | limiting about another structure. However, it is preferable that two fastening tapes of the present invention are arranged on each of the left and right side edges of the back body.

  For example, in the tape-type diaper 1 shown in FIGS. 1 and 5, two fastening tapes 10 of the present invention are disposed on each of the left and right side edges 6 a and 6 b of the back body 6. In this way, the tape type diaper in which two fastening tapes are arranged is compared with the tape type diaper in which one piece is arranged at a time, and the wearer's body shape, specifically, the waist circumference and leg circumference dimensions. It is excellent in that the tape position and tightening condition can be adjusted according to the situation.

  The tape-type diaper of the present invention is preferably one in which the fastening tape of the present invention is joined to the diaper main body by fusion. By joining by fusion | bonding, compared with the adhesion | attachment using an adhesive agent etc., firm joining can be aimed at and the situation where a fastening tape falls off from a diaper main body can be prevented effectively. For example, the tape-type diaper 1 shown in FIG. 1 is ultrasonically bonded to the side edges 6a and 6b of the back body 6 of the diaper main body, more specifically, to both side edges of the side flap 8 constituted by the side sheet 19. It is the example which joined the fastening tape 10 of this invention.

[4-2] Absorber:
The absorber is a member for absorbing and holding the wearer's urine. The absorber is made of an absorbent material because it needs to absorb and retain the wearer's urine and body fluid.

  Examples of the absorbent material constituting the absorber include conventionally known absorbent materials usually used for disposable diapers and other absorbent articles, such as fluff pulp, super absorbent polymer (Super Absorbent Polymer; hereinafter referred to as “SAP”). And a hydrophilic sheet. It is possible to use wood pulp or non-wood pulp defibrated as fluff pulp, sodium polyacrylate as SAP, tissue, absorbent paper, hydrophilized nonwoven fabric as hydrophilic sheet preferable.

  These absorbent materials are usually used as a single-layer or multi-layer mat. Under the present circumstances, 1 type may be used independently among the said absorptive materials, and 2 or more types may be used together. Especially, what used together about 10-500 mass parts SAP with respect to 100 mass parts of fluff pulp is preferable. At this time, the SAP may be uniformly mixed in each mat of fluff pulp, or may be arranged in layers between the layers of the multilayer fluff pulp.

  It is preferable that the absorber is interposed at least in part between the top sheet and the back sheet. Usually, the absorber is interposed between the top sheet and the back sheet by being sandwiched between the top sheet and the back sheet and sealing the peripheral edge thereof. Therefore, the flap part in which the absorber is not interposed is formed between the top sheet and the back sheet at the peripheral part of the absorber. The absorber is interposed in at least a part between the top sheet and the back sheet. More specifically, the absorbent body may be interposed at least in the crotch region, and the absorbent body may extend to the front body and the back body.

  It is preferable that the absorber is entirely wrapped with a hydrophilic sheet. Such a configuration has an advantage that SAP can be prevented from leaking from the absorber and shape stability can be imparted to the absorber.

  Although there is no restriction | limiting in particular about the shape of an absorber, The shape used in the conventional disposable diaper and other absorbent articles, for example, a rectangular shape, an hourglass type, a gourd type, a T shape etc. can be mentioned. The tape-type diaper 1 shown in FIG. 1 is an example in which an hourglass-type absorber is used as the absorber 22.

  In addition, a sheet (second sheet) for diffusing liquid such as urine and body fluid may be incidentally disposed on the surface side of the absorber (for example, between the absorber and the top sheet). . When this second sheet is attached, due to the wearer's posture, etc., even when the space on the back side of the top sheet is not sufficiently formed, the absorption rate of urine, body fluid, etc. is difficult to decrease, and the absorption rate decreases. It is possible to prevent leakage of urine and body fluids.

  Examples of the material constituting the second sheet include hydrophilic and liquid-permeable materials such as woven fabric, non-woven fabric, porous plastic, and fluff pulp. Examples of these constituent materials include polypropylene, polyethylene, polyester, rayon, pulp, and composite fibers thereof. As the pulp, crimped fibers such as curly cellulose fibers can be suitably used.

[4-3] Top sheet:
A top sheet is a sheet | seat arrange | positioned so that the surface (surface located in a wearer's skin side at the time of mounting | wearing of a diaper) may be coat | covered. At least a part (all or a part) of the top sheet is made of a liquid-permeable material because the absorber disposed on the back surface side needs to absorb the wearer's urine. Usually, at least near the surface of the absorber, it is made of a liquid-permeable material that can permeate the wearer's urine and body fluid. As long as at least a part is made of the liquid permeable material, the entire top sheet is not necessarily made of the liquid permeable material.

  Examples of the liquid permeable material constituting the top sheet include a woven fabric, a nonwoven fabric, and a porous film. Among these, it is preferable to use a non-woven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, or nylon and subjected to a hydrophilic treatment. There is no restriction | limiting in particular also about the kind of nonwoven fabric, The conventionally well-known nonwoven fabric manufactured by various manufacturing methods, such as air through (card hot air), card | curd embossing, and a spun bond, can be used suitably.

  The top sheet may be composed of a single sheet material, but may be composed of a plurality of sheet materials. In addition, a top sheet (center sheet) made of a liquid permeable material is disposed on the surface of the wearer when the diaper is worn, and another sheet (side sheet) is disposed on the side flap. Sheet) may be arranged. The tape-type diaper 1 shown in FIG. 1 has a top sheet 18 (center sheet 18a) made of a liquid-permeable material at the center of the diaper, and the side flap 8 part of the diaper is resistant to liquid permeation. This is an example in which a side sheet 19 made of a breathable water repellent material is disposed.

[4-4] Backsheet:
A backsheet is a sheet | seat arrange | positioned so that the back surface (surface located in a wearer's clothing side at the time of mounting | wearing of a diaper) may be coat | covered. The back sheet is made of a liquid-impermeable material because it is necessary to prevent the wearer's urine from leaking outside the diaper.

  Although there is no restriction | limiting in particular about the arrangement | positioning method, For example, the structure which arrange | positions the back seat | sheet 20 so that it may correspond with the external shape of a diaper like the tape-type diaper 1 shown in FIG. However, it is not always necessary to adopt such a configuration. From the viewpoint of preventing leakage of urine absorbed by the absorber, a back sheet made of a liquid-impermeable material is disposed at least in a portion where the absorber is present. May be.

  Examples of the liquid-impermeable material constituting the backsheet include a liquid-impermeable film made of a resin such as polyethylene. Among these, a microporous polyethylene film is preferably used. This microporous polyethylene film has a large number of fine pores of 0.1 to several μm, and is liquid impervious but has moisture permeability, so that the inside of the diaper can be prevented from being steamed There is.

  Note that a sheet material (cover sheet) may be bonded to the outer surface of the back sheet. This cover sheet is used to reinforce the back sheet and improve the feel (tactile feeling) of the back sheet.

  Examples of the material constituting the cover sheet include woven fabric and non-woven fabric. Especially, it is preferable to use the dry nonwoven fabric and wet nonwoven fabric which consist of thermoplastic resins, such as polyethylene, a polypropylene, and polyester.

[4-5] Solid gather:
In order to prevent the side leakage of the urine excreted by the wearer, a three-dimensional gather may be provided. The three-dimensional gather is a member for preventing side leakage of the urine excreted by the wearer, and is a leak-proof wall configured to stand up three-dimensionally. By forming such a three-dimensional gather, the three-dimensional gather serves as a breakwater, and leakage from a leg-diameter opening or the like (so-called “lateral leakage”) can be effectively prevented.

  The structure of a three-dimensional gather can employ | adopt the structure used for the conventional disposable diaper and other absorbent articles. For example, a stretchable material (a three-dimensional gathered stretchable material) disposed on a part of the water-repellent sheet material and a sheet (gather) formed on the sheet material by the three-dimensional gathered stretchable material can be suitably used.

  The three-dimensional gather may be formed of a sheet material that is completely different from the top sheet or the back sheet, but may be formed by folding back a top sheet (for example, a center sheet) or a side sheet. For example, the tape-type diaper 1 shown in FIG. 1 is an example in which the three-dimensional gathers 26 (26a, 26b) are formed by folding the side sheets 19. However, the three-dimensional gather may be formed by folding back members other than the second sheet.

  In order to prevent leakage from the crotch part, this three-dimensional gather may be formed at least in the crotch part, but may be formed in the front body or the back body. For example, the tape-type diaper 1 shown in FIG. 1 has a pair of three-dimensional gathers 26 (26a, 26b) formed continuously from the crotch part 4 to both the front body 2 and the back body 6 along the longitudinal direction of the diaper. An example is shown. Further, at least one pair of solid gathers must be formed, but two or more pairs may be formed.

  The three-dimensional gather may be an inward gather that tilts toward the inside of the diaper, or may be an outward gather that tilts toward the outside of the diaper. Moreover, it can also be set as the three-dimensional gathers (C fold gather, Z fold gather, etc.) which formed the bending part and the folding | turning part in a part of height direction. For example, the tape-type diaper 1 shown in FIG. 1 is an example in which the three-dimensional gather 26 (26a, 26b) is inwardly gathered.

[4-6] Various elastic materials:
In a tape-type diaper, it is preferable to arrange an elastic material around the legs and arrange an elastic material around the waist.

  The leg circumference elastic material is an elastic material arranged along the leg circumference opening. By arranging the leg-stretchable material, a gather (leg gather) rich in stretchability can be formed in the leg-surrounding opening. Therefore, it is difficult to form a gap around the leg, and urine leakage from the opening around the leg can be effectively prevented. Further, when the leg stretchable material is disposed, the leg stretchable material contracts on both sides of the absorbent body when changing the diaper, so that the vicinity of the crotch portion is deformed into a bowl shape and a recess is formed. For this reason, urine and body fluid accumulate in the concave portion, and the diaper can be easily replaced without spilling urine and body fluid.

  For example, the tape-type diaper 1 shown in FIG. 1 is an example in which leg gathers are formed by arranging two leg-around elastic members 40 linearly along the longitudinal direction of the diaper. The leg-around elastic member 40 is made of rubber thread. However, the leg-surrounding elastic members are not necessarily arranged linearly, and may be arranged in a curved line along the curve of the leg-periphery opening, for example.

  The leg stretchable material is preferably formed with a leg stretchable material 40 in a portion outside the upright line 46 of the three-dimensional gather 26, for example, like the tape-type diaper 1 shown in FIG. With such a configuration, it is possible to improve the wearing feeling and wearing feeling of the crotch part while ensuring a sufficient leakage preventing effect of the three-dimensional gather.

  The tape-type diaper 1 shown in FIG. 1 shows an example in which the shape, arrangement position, number of arrangements, etc. of the leg elastic members 40 are bilaterally symmetric, but those that are bilaterally asymmetric are also included in the scope of the present invention. It is. And in the tape-type diaper 1 shown in FIG. 1, although the example in which the leg periphery elastic material 40 was arrange | positioned two per one side was shown, only one may be arrange | positioned and three or more may be arrange | positioned. Good. Further, when using a plurality of leg-surrounding stretchable materials, the thickness, stretch rate, etc. may be set as appropriate according to the purpose, and it is not necessary to use the same for all.

  The waist elastic material is an elastic material arranged along the waist opening. By arranging the elastic material around the waist, a gather (waist gather) rich in elasticity can be formed in the waist opening. This waist gather makes it difficult for gaps to be formed around the waist, preventing urine leakage from around the waist, and improving the fit of the diaper to the wearer, thereby preventing the diaper from falling down.

  In addition, the tape-type diaper 1 shown in FIG. 1 is the example which has arrange | positioned the strip | belt-shaped waist circumference elastic material 42 along the edge of the back body 6 of a diaper. The belt-like waist elastic member 42 is made of an elastic foam such as urethane foam. In the illustrated example, the waist elastic member 42 is disposed only on the back body (back side), but the waist elastic material may be disposed on the front body (abdominal side).

  For example, when two fastening tapes 10 are arranged on each of the left and right side edges 6a and 6b of the back body 6 as in the tape-type diaper 1 shown in FIG. It is preferable that the elastic material 42 around the waist is attached along the edge and the elastic material 40 around the leg is attached at least along both side edges of the crotch portion 4.

  With the configuration as described above, the fastening tape 10 disposed on the upper side of the two fastening tapes 10 and the waist elastic member 42 are integrated to improve the fit of the diaper around the wearer's waist. be able to. Moreover, the fastening tape 10 arrange | positioned below among the two fastening tapes 10 and the leg periphery expansion-contraction material 40 can be united, and the fit property of the diaper around a wearer's leg can be improved. The effect is that the fastening tape 10 arranged on the upper side is fastened in substantially the same direction as the edge of the front body 2, and the fastening tape 10 arranged on the lower side is attached to the edge side (upper diaper) of the front body 2. It becomes particularly large when it is stopped so as to be pulled up.

  For these stretchable materials, after considering the degree of shrinkage of gathers, etc., the constituent material, the elongation rate of the material, the stretched state at the time of fixing, etc. may be determined.

  As an elastic material, the elastic material which has been used with the conventional disposable diaper can be used conveniently. Specific examples include elastic rubber, elastic film, elastic foam (urethane foam, etc.), etc., as well as thread rubber and flat rubber made of elastic materials such as natural rubber and synthetic rubber (urethane rubber, etc.). .

  The stretchable material is preferably fixed in the stretched state in order to exert a sufficient stretch force. For example, when the elastic material is natural rubber or synthetic rubber, it is preferably fixed in a stretched state of 110 to 400%, and more preferably fixed in a stretched state of 200 to 300%. By fixing in the extended state in such a range, a sufficient stretching force can be applied.

  The stretchable material as described above is fixed to other constituent members of the diaper by an adhesive or other means. The fixing method may be, for example, adhesion using a hot melt adhesive or other highly fluid adhesive, or may be welding by heat such as heat sealing or ultrasonic waves.

[5] Tape type diaper manufacturing method:
Hereinafter, the manufacturing method of the tape type diaper of this invention is demonstrated in the example in the case of manufacturing the tape type diaper 1 shown in FIG. First, the absorbent body 22 and the leg elastic member 40 wrapped in a hydrophilic sheet are placed on the surface of a long sheet material (back sheet material) which is a material of the back sheet 20, and the top sheet is further placed on the surface. By placing a long sheet material (top sheet material) as 18 material, a laminate (diaper continuum) as an intermediate body of the diaper is obtained. At this time, as the top sheet material, two types of a top sheet material corresponding to the center sheet 18 a and a side sheet material corresponding to the side sheet 19 are used. A three-dimensional gather 26 is formed by providing a folded portion on a side sheet material corresponding to the side sheet 19.

  In the diaper continuous body obtained as described above, a portion corresponding to the opening around the leg of the diaper is cut out in an arc shape and cut (R cut) to form an opening around the leg. Finally, the fastening tape 10 of the present invention is attached to the side edges 6a and 6b of the back body 6 of the diaper, and the continuous diaper is cut into individual diapers, whereby the tape-type diaper 1 is manufactured. At this time, the left and right side edge portions of the back body 6 and the end portion of the fastening tape 10 are preferably joined by fusion such as heat sealing.

  In addition to the method described above, a fastening tape is previously attached to the top sheet material, and on the surface of the back sheet material, the absorbent body wrapped in a hydrophilic sheet and the elastic material around the legs are placed, Furthermore, you may obtain a diaper continuous body by mounting the top sheet material in which the fastening tape was attached to the surface. The series of steps as described above can be continuously performed by mechanical means. For example, by adopting a method / apparatus such as continuously feeding a long sheet material from a roller, continuous production of a tape-type diaper becomes possible, which contributes to improvement of productivity.

  Hereinafter, examples of the fastening tape of the present invention will be described more specifically. However, the fastening tape of the present invention includes all fastening tapes having the invention-specific matters, and is not limited to the following examples.

Example 1
As Example 1, a fastening tape shown in FIG. 12 will be described. The fastening tape 10g of the present embodiment is used for fixing the front and back bodies of the diaper, and includes a base material 48 and a hook material 44 of a mechanical fastener attached to the surface of the base material 48. Each of the end portions 44a of the hook material 44 is formed with a strip-shaped recess 60f that is pressed with a predetermined width from the surface side of the hook material 44 toward the base material 48 side.

  The base material 48 and the hook material 44 are joined by a hot melt adhesive applied to the back surface of the hook material 44, and are further heat sealed and joined by a heated pattern roll when the recess 60f is formed.

  The base material 48 is made of a sheet material made of a spunbonded nonwoven fabric, and the hook material 44 is made of a mechanical fastener made of polyethylene and having a thickness of 1 mm (when not pressed). The width from one end of the hook member 44 to the other end is 30 mm. The width of each recess 60f formed at the end of the hook member 44 is 4 mm, and the width of the fastening region at the center is 22 mm.

  In the first embodiment, the concave portion 60f has a striped repeating pattern in which the deep concave portion 62f and the shallow concave portion 64f are inclined at 45 degrees with respect to the longitudinal axis of the strip-shaped concave portion 60f. The stripe-shaped repeated pattern is such that the pattern direction (inclination direction) is reversed between the recess 60f on one end side of the hook material 44 and the recess 60f on the other end side. It is configured. In this repeating pattern, the deep recesses 62f and the shallow recesses 64f are arranged at equal intervals (equal pitch). The width of the deep recesses 62f in the longitudinal axis direction is 2 mm, and the width of the shallow recesses 64f is 5 mm. is there.

  The pressing depth of the deep recess 62f is 0.9 mm, and the pressing depth of the shallow recess 64f is 0.8 mm. In addition, the deep recessed part 62f and the shallow recessed part 64f in Example 1 are what respectively lose | fastened the fastening force of the hook material 44 by the press at the time of formation of the recessed part 60f. The pressing depth is a distance (depth) from the protruding end of the pin of the hook member 44 before pressing to the surface (bottom surface) of the recess 60f formed by pressing.

  In addition, the fastening tape 10g of Example 1 is pressed in two rows and zigzag in a dot pattern at a predetermined interval in the central portion between the recesses 60f on both ends of the hook material 44 in parallel with the belt-like recesses 60f. A central recess 61a is formed. Each central recess 61a is 1 × 1 mm in size, spaced from each recess 60f by 6 mm in the width direction, and one row of the central recesses 61a is formed in a staggered manner with an interval of 8 mm in the longitudinal direction. Has been. The pressing depth of the central recess 61a is 0.5 mm.

  This fastening tape 10g was manufactured by a fastening tape manufacturing apparatus 90 as shown in FIGS. The sheet pressing portion 124 constituting the fastening tape manufacturing apparatus 90 has a pattern roll 98 for forming the concave portion and the central concave portion as shown in FIGS. 17 and 18. The pattern roll 98 has, on its pressing surface, a convex portion 99 consisting of a deep convex reverse convex portion 99a and a shallow concave reverse convex portion 99b, and a central concave portion 101 reverse convex central convex portion 101. Is formed.

  The pattern roll 98 was heat-sealed by being heated to a temperature capable of heat-sealing when pressed. Of course, the hook material and the base material can be simply bonded without heating the pattern roll.

  Moreover, this pattern roll 98 is comprised so that division | segmentation is possible in the width direction in the center part, and it is comprised so that the position (distance between the convex parts 99) of the convex part 99 can be adjusted.

  Such a fastening tape 10g is disposed on the left and right side edges 6a and 6b of the back body 6 of the disposable diaper 1 as shown in FIG. 1 to fix the front body 2 and the back body 6 of the diaper. Can be suitably used.

  The fastening tape of the present invention can be suitably used as a fastening tape for fixing the front and back bodies of a diaper. Moreover, the tape type diaper of this invention can be utilized suitably as a diaper for adults, such as an elderly person and a disabled person for infants or the elderly who require nursing care.

It is a partially cutaway sectional view showing one embodiment of a tape type diaper using the fastening tape of the present invention, and is a figure showing the state where a tape type diaper was developed and seen from the top sheet side. It is an enlarged view which shows one Embodiment of the tape type diaper using the fastening tape of this invention, and is a figure which expands and shows the fastening tape part of the tape type diaper shown in FIG. It is the enlarged view which expanded further the site | part to which the hook material of the fastening tape shown in FIG. 2 was attached. It is a schematic sectional drawing which shows the cross section which cut | disconnected the fastening tape shown in FIG. 3 along the A-A 'line. It is a perspective view which shows the state which uses the tape-type diaper using the fastening tape of this invention. It is the enlarged view which expanded the site | part provided with the hook material of the fastening tape which shows the other example of the repeating pattern of a deep recessed part and a shallow recessed part. It is the enlarged view which expanded the site | part provided with the hook material of the fastening tape which shows the further another example of the repeating pattern of a deep recessed part and a shallow recessed part. It is the enlarged view which expanded the site | part provided with the hook material of the fastening tape which shows the further another example of the repeating pattern of a deep recessed part and a shallow recessed part. It is the enlarged view which expanded the site | part provided with the hook material of the fastening tape which shows the further another example of the repeating pattern of a deep recessed part and a shallow recessed part. It is the enlarged view which expanded the site | part provided with the hook material of the fastening tape which shows the further another example of the repeating pattern of a deep recessed part and a shallow recessed part. It is the enlarged view which expanded the site | part provided with the hook material of the fastening tape which shows the further another example of the repeating pattern of a deep recessed part and a shallow recessed part. It is the enlarged view to which the attachment by which the hook material of the fastening tape is arrange | positioned which shows the other example of the fastening tape of this invention was expanded. It is the enlarged view to which the attachment by which the hook material of the fastening tape is arrange | positioned which shows the other example of the fastening tape of this invention was expanded. It is explanatory drawing which shows typically the structure of one Embodiment of the fastening tape manufacturing apparatus of this invention. It is a partial schematic perspective view which expands and shows the part shown to B of the fastening tape manufacturing apparatus shown in FIG. It is explanatory drawing which shows typically the structure of other embodiment of the fastening tape manufacturing apparatus of this invention. It is a top view which shows typically the structure of the pattern roll used for formation of a recessed part. It is a partial top view which expands and shows the part shown to C of the pattern roll shown in FIG. It is a top view explaining the fastening tape cutting-off process in one Embodiment of the manufacturing method of the fastening tape of this invention. It is a partially cutaway sectional view showing one embodiment of the conventional tape type diaper, and is a figure showing the state which developed the conventional tape type diaper and was seen from the top sheet side. It is the enlarged view which expanded further the site | part provided with the hook material of the fastening tape shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,150: Tape type diaper, 2: Front body, 4: Crotch part, 6: Back body, 6a, 6b: Side edge, 8: Side flap, 10, 10a, 10b, 10c, 10d, 10e, 10f, 10x , 10y: Fastening tape, 12: Front patch, 18: Top sheet, 18a: Center sheet, 19: Side sheet, 20: Back sheet, 22: Absorber, 26, 26a, 26b: Three-dimensional gather, 36, 36a, 36b: Three-dimensional gather elastic material, 40: Elastic material around leg, 42: Elastic material around waist, 44: Hook material, 44a: End (end of hook material), 46: Standing wire, 48: Base material, 52: Loop material, 60, 60, 60a, 60b, 60c, 60d, 60e, 60f, 60g, 60h: recess, 61a, 61b: recess (central recess), 62, 62a, 62b, 62c, 6 d, 62e, 62f: deep recess, 64, 64a, 64b, 64c, 64d, 64e, 64f: shallow recess, 70: fastening tape, 71: long sheet laminate, 72: fastening tape intermediate, 74: Long hook material, 74a: side edge (side edge of long hook material), 78: long base material sheet, 80: concave portion, 81: concave portion (central concave portion), 84: hook material, 86: temporary fixing Part, 90, 90a: fastening tape manufacturing apparatus, 92: adhesive, 94: adhesive applying means, 95: pressing means, 96: ultrasonic horn, 97: pattern roll support, 98: pattern roll, 99: convex Part, 99a: High convex part, 99b: Low convex part, 100: Plain roll, 101: Central convex part, 102: Valley part, 104: Side edge, 114: Long hook material supply roll, 116: Support roll, 118 : Long base sheet supply roll, 1 2: sheet stacking unit, 124: sheet pressing unit, 126: sheet cutting unit, 128: sheet separating unit, 132: cutting unit, 134: folding unit, 136: temporary fixing unit, 136a: roll for temporary fixing, 136b: 140: fastening tape, 144: hook material, 144a: end (end of hook material), 148: base material.

Claims (19)

Used to fix the front and back of diapers,
Comprising a base material and a hook material of a mechanical fastener attached to the surface of the base material,
Each end of the hook material is formed with a band-shaped recess pressed with a predetermined width from the surface side of the hook material toward the base material side,
The fastening tape is a fastening tape in which a deep recess having a deep pressing depth and a shallow recess having a pressing depth shallower than the deep recess have a predetermined repeating pattern.   The fastening tape according to claim 1, wherein each of the deep recess and the shallow recess loses the fastening force of the hook material by the pressing.   2. The deep recess has lost the fastening force of the hook material due to the pressing, and the shallow recess has the fastening force of the hook material without losing the fastening force. Fastening tape.   The fastening tape according to any one of claims 1 to 3, wherein the hook member is bonded to the base material with an adhesive.   The fastening tape according to any one of claims 1 to 4, wherein the concave portion is formed only by pressurization, heat sealing, or ultrasonic welding.   The fastening tape according to any one of claims 1 to 5, wherein a width of the concave portion formed in a band shape is 1 to 9 mm.   The said recessed part is formed so that at least one of the said deep recessed part and the said shallow recessed part may have a repeating pattern diagonally arranged with respect to the axial direction of the said recessed part formed in the strip | belt shape. The fastening tape according to any one of the above.   The fastening tape according to claim 7, wherein the repeating pattern arranged diagonally is configured such that the direction of the pattern is reversed between one end side and the other end side of the hook material. .   The fastening tape according to any one of claims 1 to 8, wherein the back surface of the base material is configured to have a flat shape without the irregularities of the concave portion on the surface of the hook material appearing. A sheet laminating step of obtaining a long sheet laminate by placing a band-like long hook material on one surface of the long base sheet along the longitudinal direction of the long base sheet,
The both side edge portions of the long hook material of the obtained long sheet laminate are pressed with a predetermined width from the surface side of the long hook material toward the long base sheet side to form a recess. A recess forming step,
A fastening tape separating step of obtaining a plurality of fastening tapes by separating the long sheet laminate formed with the recesses at a predetermined width;
In the recessed portion forming step, the recessed portion is formed such that the recessed portion having a deep pressing depth and the shallow recessed portion having a pressing depth shallower than the deep recessed portion have a predetermined repeating pattern. .   The manufacturing method of the fastening tape of Claim 10 which joins the said elongate base material sheet and the said elongate hook material in the said sheet | seat lamination process.   The manufacturing method of the fastening tape of Claim 10 or 11 which forms the said recessed part by only pressurizing, heat-sealing, or ultrasonic welding the both-sides edge part of the said long hook material in the said recessed part formation process. In the fastening tape separating step, the long sheet laminate formed with the recesses is cut so that a cutting locus draws an S-curve along the longitudinal direction of the long sheet laminate. The fastening tape intermediate of
A plurality of the fastening tapes are obtained by separating between the valley portions of the side edges formed in the S-curve shape and the side edges formed in a straight line in each of the obtained fastening tape intermediates. The manufacturing method of the fastening tape as described in any one of Claims 10-12. On one surface of the long base sheet, a sheet stacking unit that forms a long sheet stack by placing a band-shaped long hook material along the longitudinal direction of the long base sheet;
Protrusions that press both side edges of the long hook material of the long sheet laminate with a predetermined width from the surface side of the long hook material toward the long base sheet side are formed on the pressing surface. A sheet pressing portion having a pressing means,
The fastening tape manufacturing apparatus, wherein the convex portion of the pressing surface of the pressing means includes a high convex portion having a high protruding height and a low convex portion having a protruding height lower than that of the high convex portion. .   The fastening tape manufacturing apparatus according to claim 14, wherein the pressing means of the sheet pressing portion includes a pattern roll arranged so that the high convex portion and the low convex portion have a predetermined repeating pattern on the pressing surface. .   The pressing means of the sheet pressing unit includes an ultrasonic horn for ultrasonic welding and a receiving roll for the ultrasonic horn, and the pressing surface on one of the ultrasonic horn and the receiving roll The fastening tape manufacturing apparatus according to claim 14, wherein a convex portion is formed.   The fastening tape manufacturing apparatus according to any one of claims 14 to 16, wherein the sheet stacking unit includes a joining unit for joining the long base sheet and the long hook material. An absorber, a top sheet that is arranged so as to cover the surface of the absorber, and at least partly made of a liquid permeable material, and a back sheet that is arranged so as to cover the back surface of the absorber. And a back sheet
It consists of each part of the front body, the crotch and the back body,
A tape-type diaper arranged to extend from the left and right side edges of the back body, further comprising a fastening tape for fixing the front body and the back body,
The tape-type diaper whose said fastening tape is the fastening tape as described in any one of Claims 1-9.   The tape-type diaper according to claim 18, wherein two fastening tapes are arranged on each of the left and right side edges of the back body.

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