RECLOSABLE UNDERWEAR-TYPE DISPOSABLE ARTICLE FOR WEARING AND MANUFACTURING METHOD THEREFOR
20230127980 · 2023-04-27
Inventors
Cpc classification
A61F13/15756
HUMAN NECESSITIES
A61F13/62
HUMAN NECESSITIES
A61F13/15764
HUMAN NECESSITIES
International classification
Abstract
While in an unused folded state of a worn article, flaps are engaged with second touch fasteners in a protruding end portion via first touch fasteners, and the flaps are folded so that the protruding end portion comes closer to a proximal end portion, and while in a worn state in which the worn article is used, the flaps can be developed so that the first touch fasteners of the protruding end portion can oppose and engage with the second touch fasteners.
Claims
1. A reclosable pants-type disposable worn article comprising: a front panel and a back panel covering a torso of a wearer; a crotch member covering crotch of the wearer and connecting between the front panel and the back panel; a separation portion formed on the front panel, thereby making the front panel separated or separable into left and right parts; a pair of flaps provided in an area of the crotch member, the pair of flaps 4 opposing the front panel and each extending in a left-right direction from a proximal end portion to a protruding end portion; a pair of left and right first touch fasteners, the left first touch fastener provided on at least a non-skin-contact side of the protruding end portion of one of the pair of flaps, the right first touch fastener provided on at least the non-skin-contact side of the protruding end portion of another one of the pair of flaps; and a pair of second touch fasteners provided on a skin-contact side of the front panel and engaging with the pair of first touch fasteners, thereby allowing the front panel to be re-fastened to the crotch member, wherein: the separation portion is interposed between the pair of second touch fasteners; one of the pair of second touch fasteners is provided on a left side of the separation portion; another one of the pair of second touch fasteners is provided on a right side of the separation portion; and while in an unused folded state of the worn article, the flaps are engaged with the second touch fasteners min the protruding end portions via the first touch fasteners, and the flaps are folded so that the protruding end portions come closer to the respective proximal end portions; and while in a worn state in which the worn article is used, the flaps are capable of being developed so that the first touch fasteners of the protruding end portions are capable of opposing and engaging with the second touch fasteners.
2. The worn article according to claim 1, wherein tentative fastening for maintaining the unused folded state of the flaps is provided on the flaps 4.
3. The worn article according to claim 2, wherein the tentative fastening is a bonded portion where a material forming the flaps is bonded by a tentative fastening agent or a welded portion where the material is welded.
4. The worn article according to claim 1, wherein the first touch fasteners F are each provided extending from the proximal end portion to the protruding end portion.
5. The worn article according to claim 4, wherein in the unused state, the flaps each are folded in a Z-letter shape having two folded portions, and the second touch fasteners engage with the first touch fasteners of the protruding end portions.
6. The worn article according to claim 2, wherein: the crotch member includes a longitudinal portion extending from a crotch portion covering the crotch to a front torso portion covering a front torso of the wearer, and the pair of flaps; and the proximal end portions of the pair of flaps are attached to the front torso portion, and the protruding end portions protrude in the left-right direction from the front torso portion.
7. The worn article according to claim 6, wherein the pair of flaps include one flap body attached to the front torso portion, and the first touch fasteners, wherein the first touch fasteners are provided on the non-skin-contact side of the flap body.
8. A method for manufacturing a reclosable pants-type disposable worn article, wherein the worn article includes: a front panel and a back panel covering a torso of a wearer; a crotch member covering crotch of the wearer and connecting between the front panel and the back panel; a separation portion formed on the front panel, thereby making the front panel separated or separable into left and right parts; a pair of flaps provided in an area of the crotch member, the pair of flaps 4 opposing the front panel and each extending in a left-right direction from a proximal end portion to a protruding end portion; a pair of left and right first touch fasteners, the left first touch fastener provided on at least a non-skin-contact side of the protruding end portion of one of the pair of flaps, the right first touch fastener provided on at least the non-skin-contact side of the protruding end portion of another one of the pair of flaps; and a pair of second touch fasteners provided on a skin-contact side of the front panel and engaging with the pair of first touch fasteners, thereby allowing the front panel to be re-fastened to the crotch member, wherein: the separation portion is interposed between the pair of second touch fasteners; one of the pair of second touch fasteners is provided on a left side of the separation portion; another one of the pair of second touch fasteners is provided on a right side of the separation portion; and the method for manufacturing the worn article comprises: a step of conveying a rear continuous body to be the back panel in such a manner that an around-torso direction is a conveyance direction; a step of conveying a precursor member to be the front panel in such a manner that an around-torso direction is the conveyance direction; a bridging step of providing the crotch member so as to bridge between the rear continuous body and the precursor member being conveyed; a step of, prior to the bridging step, folding a flap member to be the flaps so that the protruding end portions of the pair of flaps come closer to the respective proximal end portions and so that the first touch fasteners are exposed in the protruding end portions; and an engagement step of, while the first touch fasteners are exposed, engaging the pair of second touch fasteners arranged on the precursor member with the first touch fasteners.
9. The manufacturing method according to claim 8, further comprising the step of forming the separation portion for each worn article on a front continuous body to be the precursor member.
10. The manufacturing method according to claim 9, wherein the separation portion is formed by severing the front continuous body along a virtual cut-off line perpendicular to the around-torso direction at a center in the around-torso direction of an area corresponding to the front panel.
11. The manufacturing method according to claim 8, wherein: the crotch member includes a longitudinal portion extending from a crotch portion covering the crotch to a front torso portion covering a front torso of the wearer, and the pair of flaps, wherein the pair of flaps include the pair of first touch fasteners arranged on one flap body being continuous with the flaps in the around-torso direction; and the folding step is performed by folding the first touch fasteners together with the flap body.
12. The manufacturing method according to claim 8, wherein the crotch member is provided so as to bridge between the precursor member and the rear continuous body in the bridging step while the first touch fasteners are exposed and so that the pair of second touch fasteners arranged on the precursor member engage with the first touch fasteners.
13. The manufacturing method according to claim 8, wherein the engagement step is performed prior to the bridging step, and the crotch member is provided so as to bridge between the corresponding flap and the rear continuous body in the bridging step.
14. The manufacturing method according to claim 1, wherein a reinforcement strip is provided between the front panel and each of the second touch fasteners in a separation end portion of the front panel that is close to the separation portion.
15. The manufacturing method according to claim 14, wherein the reinforcement strip is provided in an area larger than the respective second touch fasteners, and each of the second touch fasteners is arranged within the area where the reinforcement strip is provided.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0032]
[0033]
[0034]
[0035]
[0036]
[0037]
[0038]
[0039]
[0040]
[0041]
[0042]
[0043]
[0044] In
DESCRIPTION OF EMBODIMENTS
[0045] The present invention will be understood more clearly from the following description of preferred embodiments taken in conjunction with the accompanying drawings. Note however that the embodiments and the drawings are merely illustrative and should not be taken to define the scope of the present invention. The scope of the present invention shall be defined only by the appended claims. In the accompanying drawings, like reference numerals denote like components throughout the plurality of figures.
[0046] One embodiment of the present invention will now be described with reference to the drawings.
[0047]
[0048] In a used state shown in
[0049] As shown in
[0050] As shown in gray in
[0051] The separation portion 10 may be formed by perforations or thermally-deteriorated fragile portions so that the front panel 1 is continuous in the left-right direction when unused and is separable by being torn when in use. The separation portion 10 may be separated in the left-right direction in advance when unused.
[0052] As shown in
[0053] The left and right flaps 4 of
[0054] On the other hand, a male touch fastener (an example of the second touch fastener) M is provided on the skin-contact side 1F of separation end portions 1E of the left and right front panels 1 of
[0055] In the present invention, “skin-contact side” refers to the side opposing the skin of the wearer, and “non-skin-contact side” refers to the side opposite to the skin-contact side.
[0056] The male touch fasteners M of
[0057] As will be described below, the present worn article N is used as its form is changed from the unused folded state of
[0058] In the unused folded state of
[0059] In the unused state of
[0060] As shown in
[0061] Thus, with the worn article N of the present embodiment, the male touch fastener M engages with the female touch fastener F whether the waist size of the wearer is large or small. Therefore, it is possible to obtain a sufficient engagement force by touch fasteners after size adjustment.
[0062] Next, prior to the description of the overall manufacturing method for manufacturing the worn article N, a method for manufacturing the crotch member 3 of
[0063] Female touch fastener members WF and flap members W4, attached together, of
[0064] Thus, the flap member W4 to which the female touch fastener members WF are attached is folded in left-right symmetry so that one end portion is folded in a Z-letter shape and the other end portion in an inverted Z-letter shape. As shown in
[0065] That is, as shown in
[0066] After the folding, a tentative fastening step may be performed. In the tentative fastening step, a portion of the female touch fastener F of
[0067] After the tentative fastening step, the flap member W4 of
[0068] The crotch continuous body W3 of
[0069] Next, the overall manufacturing method for manufacturing the worn article N will be described with reference to
[0070] As shown in
[0071] These steps are ordinary steps, and the bridging step is performed by the re-pitch turn drum 66 and a vacuum drum 67 of
[0072] Here, before the crotch member 3 is provided so as to bridge between the front continuous body W1 and the rear continuous body W2, a front portion cutter 68 being in contact with the vacuum drum 67 of
[0073] In this process, the pair of crotch members 3 and the flaps 4 of
[0074] In this arrangement process, the pair of female touch fasteners F, F of the crotch member 3 are pressed against facing the pair of male touch fasteners M, M of the front panel 1. Therefore, the pair of female touch fasteners F, F engage with the pair of male touch fasteners M, M.
[0075] Thus, the crotch member 3 is detachably fixed to the front panel 1 via male and female fasteners. On the other hand, the front panel 1, which is separated by the separation portion 10, is fixed to the crotch member 3 without inadvertently moving in the around-torso direction.
[0076] After the arrangement of the crotch member 3 of
[0077] Next, another embodiment of the structure of the front panel will be described with reference to
[0078] As shown in
[0079] This reinforcement strip 1S is provided in an area that is larger than the male touch fastener M, and the male touch fastener M is provided in the area where the reinforcement strip 1S is provided.
[0080] The reinforcement strip 1S may include two strips of non-woven fabric layered on each other, for example.
[0081] Next, another method for manufacturing a worn article including flaps will be described with reference to
[0082] In the method for manufacturing a worn article shown in
[0083] That is, in
[0084] Next, another method for manufacturing the worn article N will be described briefly with reference to
[0085] In
[0086] The produced flaps 4 (
[0087] Other methods of the present manufacturing method are similar to those shown in
[0088] Next, technical concepts that can be grasped from the embodiment described above will be described together with their effects.
[0089] In a preferred worn article, tentative fastening for maintaining the unused folded state of the flaps 4 is provided on the flaps 4.
[0090] In such a case, the folded state of the flaps is maintained until the product reaches consumers.
[0091] For example, the tentative fastening may be a bonded portions where materials forming the flaps 4 are bonded by a tentative fastening agent or welded portions where the materials are welded.
[0092] Preferably, each female touch fastener F (first touch fastener) is provided so as to extend from the proximal end portion 41 to the protruding end portion 42.
[0093] In such a case, the male touch fastener M (second touch fastener) can be fastened at any appropriate position ranging from the proximal end portion 41 to the protruding end portion 42 of the flaps 4, thereby facilitating size adjustment.
[0094] More preferably, in the unused state, the flaps 4 are folded in a Z-letter shape having two folded portions 43, and the male touch fastener M engages with the female touch fastener F of the protruding end portion 42.
[0095] The flaps 4 folded in a Z-letter shape significantly expand when developed.
[0096] Preferably, the crotch member 3 includes the longitudinal portion 30 extending from the crotch portion 31 covering the crotch to the front torso portion 32 covering the front torso of the wearer, and the pair of flaps 4; and
[0097] the proximal end portions 41 of the pair of flaps 4 are attached to the front torso portion 32, and the protruding end portions 42 protrude in the left-right direction X from the front torso portion 32.
[0098] The flaps protruding in the left-right direction X from the front torso portion increase the around-torso size to which adjustment can be made.
[0099] In such a case, the pair of flaps 4 include one flap body 40 attached to the front torso portion 32, and the female touch fasteners F, wherein the female touch fasteners F may be provided on the non-skin-contact side 4B of the flap body 40.
[0100] Preferably, the reinforcement strip 1S is provided between the front panel 1 and the male touch fastener M in the separation end portion 1E of the front panel 1 that is close to the separation portion 10.
[0101] This increases the thickness of the separation end portion 1E and increases the rigidity of the separation end portion 1E, thereby preventing the flap 4 from inadvertently folding to the separation end portion 1E at the time of attachment, and improving the appearance. As the thickness of the separation end portion 1E increases, the rigidity of the separation end portion 1E increases and it is possible to more firmly attach the male touch fastener M to the flap 4.
[0102] Preferably, the reinforcement strip 1S is provided in an area larger than the male touch fastener M, and the male touch fastener M is arranged in the area where the reinforcement strip 1S is provided.
[0103] Stress localization is likely to occur if the male touch fastener M is attached directly to the front panel 1. However, since the male touch fastener M is arranged in the area of the reinforcement strip is, stress localization is unlikely to occur and it is possible to prevent the flap 4 from inadvertently folding.
[0104] A manufacturing method may further include the step of forming the separation portion 10 for each worn article on the front continuous body W1 to be the precursor member.
[0105] Preferably, the front continuous body W1 is severed along a virtual cut-off line perpendicular to an around-torso direction at the center in the around-torso direction of the front panel 1, thereby forming the separation portion 10.
[0106] With the separation portion 10 obtained by severing the front panel 1 in advance, it is easy to open up the front panel 1 when wearing.
[0107] Preferably, the crotch member 3 includes the longitudinal portion 30 extending from the crotch portion 31 covering the crotch to the front torso portion 32 covering the front torso of the wearer, and the pair of flaps 4, wherein the pair of flaps 4 include a pair of female touch fasteners F arranged on one flap body 40 being continuous with each other in the around-torso direction; and
[0108] the folding step is performed by folding the female touch fastener F together with the flap body 40.
[0109] With the female touch fastener F layered on the flap body 40, it is possible to obtain a sufficient rigidity for the flap 4.
[0110] Preferably, the crotch member 3 is provided so as to bridge between the precursor member and the rear continuous body W2 in the bridging step while the female touch fastener F is exposed and so that the pair of male touch fasteners M arranged on the precursor member engage with the female touch fastener F.
[0111] In such a case, what is obtained by layering together the crotch continuous body W3 and the flap member W4 is cut into units of individual worn articles (the crotch members 3), which are provided so as to bridge between the front panel 1 and the back panel 2, and it can therefore be done with a single re-pitch turn step (re-pitch turn drum), thus enabling reduction in the equipment cost.
[0112] Preferably, the engagement step is performed prior to the bridging step, and the crotch member 3 is provided so as to bridge between the flap 4 and the rear continuous body W2 in the bridging step.
[0113] In such a case, the female touch fastener F of the flap 4, which is not bonded to the crotch member 3, is fastened to the male touch fastener M. Therefore, members to be fastened together do not include a thick part such as a core, making the fastening easier. This as a result increases the reproducibility of the fastened state and decreases the variations of the fastened state, improving the reliability of the fastening.
[0114] Any feature illustrated and/or depicted in conjunction with one embodiment or preferred embodiments may be used in the same or similar form in one or more of the other embodiments, and/or may be used in combination with, or in place of, the other embodiments.
[0115] While preferred embodiments have been described above with reference to the drawings, obvious variations and modifications will readily occur to those skilled in the art upon reading the present specification.
[0116] For example, the male touch fastener may be provided on the flap, and the female touch fastener on the front panel.
[0117] The flap may be continuous with the crotch member.
[0118] Thus, such variations and modifications shall fall within the scope of the present invention as defined by the appended claims.
INDUSTRIAL APPLICABILITY
[0119] The present invention is applicable to a reclosable pants-type disposable worn article and a method for manufacturing the same.
REFERENCE SIGNS LIST
[0120] 1: Front panel, 1E: Separation end portion, 1F: Skin-contact side, 1S: Reinforcement strip, 10: Separation portion [0121] 2: Back panel [0122] 3: Crotch member, 30: Longitudinal portion, 31: Crotch portion, 32: Front torso portion [0123] 4: Flap, 4B: Non-skin-contact side, 40: Flap body, 41: Proximal end portion, 42: Protruding end portion, 43: Folded portion, 44: Tentative fastening portion, 45: Middle portion [0124] 5: Elastic member [0125] 6: Side seal portion, 61: First folder device, 62: Second folder device, 63: Welding roll [0126] 64: Cutter roll, 65: Cutter, 66: Re-pitch turn drum, 67: Vacuum drum, 68: Front portion cutter, 75: Cutter roll, 76: Re-pitch turn drum [0127] 85: Cutter, 86: Re-pitch turn drum, 87: Drum [0128] F: First touch fastener (female touch fastener), M: Second touch fastener (male touch fastener) [0129] N: Worn article [0130] X: Left-right direction [0131] W1: Front continuous body (an example of precursor member), W2: Rear continuous body, W3: Crotch continuous body, W4: Flap member, WF: Female touch fastener member