Disposable wearing article and manufacturing method thereof

Abstract

The invention provides a disposable wearing article and a manufacturing method thereof. The disposable wearing article does not hinder operation when a flap part is torn. The present invention comprises a front piece (12), a rear piece (14), a crotch (16), first joining parts (20a, 20b), flap members (18a, 18b), second joining parts (22a, 22b), and tear guide lines (24a, 24b). Wherein the crotch part 16 is combined with the front piece 12 and the rear piece 14; first joining portions (20a, 20b) that join both end portions (12a, 12b, 14a, 14b) of the front sheet (12) and the rear sheet (14) together; the fin components 18a and 18b are provided with fastening parts 19a and 19b which can be fastened with the front piece 12 and are configured on the rear piece 14; second joining portions (22a, 22b) that join the flap members (18a, 18b) and the rear sheet (14) to each other; tearing guide lines (24a, 24b) which can tear and separate a connection portion where the front sheet (12) and the rear sheet (14) are connected at the front sheet (12) or the first joining portions (20a, 20b); and after the fastening parts 19a and 19b of the wing sheet parts 18a and 18b are fastened with the front sheet 12, the connecting part torn at the tearing guide line is reconnected.

Description

Technical Field

[0001] The present invention relates to a disposable wearing article and a manufacturing method thereof, and in particular to an underpants type disposable wearing article which can be fastened and worn again after being torn apart and a manufacturing method thereof. Background Art

[0002] Heretofore, a disposable underpants-type wearing article has been proposed which can be refastened and worn after being torn. Fig.18 It is a three-dimensional diagram of such a disposable wearing article.

[0003] like Fig.18 As shown, in the underpants type disposable wearing article 150, the two ends of the front piece 152 and the back piece 157 are joined together at the joint 162; the two ends of the crotch portion 160 are mounted on the front piece 152 and the back piece 157. A pair of tear guide lines 132, 134 extending from the waist opening 165 to the leg opening 164 are formed on the two ends of the front piece 152, and a pair of wing parts 166, 168 are provided to cross the tear guide lines 132, 134.

[0004] The root 143 of the wing parts 166, 168 is combined with the front piece 152; a fastening part is provided on the front end part 149; the fastening part of the front end part 149 can be combined with and separated from the fastening area 140 of the front piece 152 (for example, patent literature).

[0005] Patent document 1: U.S. Patent Application Publication No. 2002 / 0148557.

[0006] Before wearing such a disposable wearing article 150, the front sheet 152 is sometimes torn along the tear guide lines 132, 134 and then wrapped around the legs of the wearer so that the legs of the wearer can pass through the leg openings 164; then, the wing components 166, 168 are fastened again and the wearer is put on. When the front sheet 152 is torn along the tear guide lines 132, 134, the wing components 166, 168 may hinder the operation. Summary of the invention

[0007] The present invention provides a disposable wearing article in which a wing member does not interfere with operation when being torn and a method for manufacturing the same.

[0008] The present invention provides a disposable wearing article having the following structure.

[0009] A disposable wearing article, comprising: (a) a front piece, (b) a back piece, (c) a crotch portion, (d) a pair of first connecting parts, (e) a pair of wing components, (f) a pair of second connecting parts, and (g) a pair of tear guide lines; wherein the front piece is arranged on the abdomen side of the wearer when worn; the back piece is arranged on the back side of the wearer when worn; the crotch portion is connected to the front piece and the back piece; the first connecting part is to connect the two ends of the front piece and the back piece together; the pair of wing components are provided with a fastening part; the fastening part is provided with a first part and a second part, and the second parts are opposite to each other; in order to make the first part adjacent to one of the two ends of the back piece, the back piece is fastened along the back piece. The second part is configured on the main surface on the opposite side of the front piece; the second part can be detachably fastened to the one main surface of the front piece; the pair of second connecting parts connect the first part of each of the wing parts with the front piece; the pair of tear guides can tear the connecting part connecting the front piece and the back piece at the front piece or the first connecting part and then separate them; (i) the tearing strength of the tear guide line is lower than the tearing strength of the connecting part in the part where the tear guide line is not formed; (ii) the connecting part torn along the tear guide line can be reconnected by fastening the fastening part of the second part in the wing part to the one main surface of the front piece.

[0010] According to the above structure, the connecting part torn along the tearing guide line can be reconnected by fastening the fastening part of the second part of the wing member to one main surface of the front sheet. Since the wing member is arranged along the back sheet, when the connecting part is torn along the tearing guide line, the wing member will not hinder the operation.

[0011] Preferably, the second portion of the wing member is arranged along the one main surface of the rear panel in a state where the wing member is folded so that the fastening portion is not exposed.

[0012] In this case, the fastening parts will not interfere with other articles and the disposable wearing article can be easily handled when it is packaged or initially worn.

[0013] In a preferred embodiment, the tear guide line is a linear eyelet formed by arranging a plurality of penetrating portions penetrating between the one main surface and the other main surface of the front sheet between the upper edge and the lower edge of the front sheet.

[0014] In this case, the tear guide line can be easily formed.

[0015] In a preferred embodiment, the tear guide line is the first bonding portion; the tear strength of the first bonding portion is lower than the tear strength of the portions of the front sheet and the back sheet where the first bonding portion is not formed.

[0016] In this case, the structure is simpler than when a tear guide line is formed separately from the first joint portion.

[0017] Preferably, when viewed from a direction perpendicular to the one main surface of the rear panel, the first connecting portion and the second connecting portion overlap with each other.

[0018] In this case, since the first connecting portion and the second connecting portion can be formed at the same time, the manufacturing process of the disposable wearing article can be simplified.

[0019] Preferably, the fastening portion is a hook component of a Velcro fastener.

[0020] In this case, the hook member can be easily attached to and detached from the front sheet, and can be stably fastened even if the attachment and detachment are repeated.

[0021] In addition, the present invention also provides a method for manufacturing a disposable wearing article having the following structure.

[0022] A method for manufacturing a disposable wearing article, comprising: (i) step 1, (ii) step 2, (iii) step 3, and (iv) step 4; wherein: The process 1 is to form a main body connection part; in the main body connection part, the parts to be a single piece are connected together; the parts to be a single piece include a front piece formed with a first and a second tear guide line, a back piece, and a crotch part combined with the front piece and the back piece; then, the front piece connection part connected to the front piece part and the back piece connection part connected to the back piece part are separated from each other and conveyed; The step 2 comprises: combining the base material connection part for forming the first and second wing parts and the hook connection part for forming the hook part while conveying them; cutting them into a predetermined shape to form the wing parts before division; and connecting the first and second wing parts respectively provided with the hook parts in the wing parts before division; Step 3: overlap the main surface of one side of the wing member before the division with the rear piece connection part in the main body connection part; overlap the main surface of the front piece connection part in the main body connection part with the other main surface of the rear piece connection part in the main body connection part; then, combine the wing member before the division with the overlapped front piece connection part and the rear piece connection part in the main body connection part to form a first connection part that combines the front piece connection part and the rear piece connection part in the main body connection part; and a second connection part that combines the wing member before the division with the rear piece connection part in the main body connection part; Step 4: cutting the wing member and the main body connecting portion that are connected to each other before being divided to form the single piece; in the single piece, a pair of the first connecting parts connects the two ends of the front piece and the rear piece to each other, and a pair of the second connecting parts connects the rear piece and the wing member to each other; In the step 1, the first and second tear guide lines are formed so that the tear strength of the first and second tear guide lines is lower than the tear strength of a portion of the front panel connection portion where the first and second tear guide lines are not formed.

[0023] According to the above method, disposable wearing articles can be continuously and efficiently manufactured in which the wing member does not interfere with the operation when tearing along the tear guide line.

[0024] Preferably, in the process 2, when the substrate connecting part and the hook connecting part are conveyed, the hook connecting part is divided to form the first and second hook connecting parts; and the first and second hook connecting parts are cut off to form a pair of hook parts; then, the pair of hook parts are spaced apart from each other in the conveying direction and combined with the substrate connecting part to form the first connecting part; then, the first connecting part is folded so that the hook part is sandwiched between the substrate connecting parts to form the second connecting part; and the second connecting part is cut off between the adjacent pair of hook parts to form the wing part before division.

[0025] In this case, different devices can be used to effectively cut off the first and second hook connection parts and the base material connection part in the second connection part, which can easily improve production efficiency. In addition, the present invention can suppress the wear of the cutting blade used for cutting and realize the effective use of the production line.

[0026] In addition, the present invention also provides a method for manufacturing another disposable wearing article with the following structure.

[0027] A method for manufacturing a disposable wearing article, comprising: (i) step 1, (ii) step 2, (iii) step 3, (iv) step 4, and (v) step 5; wherein: The process 1 is to form a main body connection part; in the main body connection part, parts that become a single piece are connected together; the parts that become a single piece include a front piece, a back piece, and a crotch part that is combined with the front piece and the back piece; then, the front piece connection part connected to the part that becomes the front piece and the back piece connection part connected to the part that becomes the back piece are separated from each other, and the conveying is performed; The step 2 includes: combining the base material connection part for forming the first and second wing members and the hook connection part for forming the hook member while conveying them; and cutting them into a predetermined shape to form the first and second wing members each having the hook member; Step 3: overlapping the first and second wing members with one main surface of the rear panel connection portion in the main body connection portion; then, combining the first and second wing members with the rear panel connection portion in the main body connection portion to form a second connection portion; Step 4: overlapping the other main surface of the front piece connection part in the main body connection part and the rear piece connection part in the main body connection part; then, combining the overlapping front piece connection part and the rear piece connection part in the main body connection part together to form a first connection part; Step 5: cutting the main body connection portion to form the single piece; in the single piece, the pair of first joints join the two ends of the front piece and the rear piece together, and the pair of second joints join the rear piece and the first and second wing members together; In the step 4, the tear strength of the first connecting portion is lower than the tear strength of the front sheet connecting portion and the back sheet connecting portion where the first connecting portion is not formed.

[0028] According to the above method, disposable wearing articles can be continuously and efficiently manufactured in which the wing member does not interfere with the operation when tearing along the first joint portion serving as the tearing guide line.

[0029] Preferably, (a) after the first and second wing members are overlapped with the one main surface of the rear piece connection part in the main body connection part, in order to configure an adhesive coating part between the first and second wing members and the rear piece connection part in the main body connection part; adhesive is coated on the rear piece connection part in the main body connection part, the substrate connection part or the first and second wing members to form the adhesive coating part; (b) in the step 3, after the first and second wing members are overlapped with the one main surface of the rear piece connection part in the main body connection part, the first and second wing members are temporarily fixed to the rear piece connection part of the main body connection part via the adhesive coating part to form the second connecting part.

[0030] In this case, by temporarily fixing the first and second wing members 18a and 18b, the present invention can improve the conveying speed of the production line and easily increase the number of products produced per unit time compared to the case where the first and second wing members are not temporarily fixed.

[0031] In addition, the present invention also provides another method for manufacturing a disposable wearing article with the following structure.

[0032] A method for manufacturing a disposable wearing article, comprising: (i) step 1, (ii) step 2, (iii) step 3, and (iv) step 4; wherein: The process 1 is to form a main body connection part; in the main body connection part, parts that become a single piece are connected together; the parts that become a single piece include a front piece, a back piece, and a crotch part that is combined with the front piece and the back piece; then, the front piece connection part connected to the part that becomes the front piece and the back piece connection part connected to the part that becomes the back piece are separated from each other, and the conveying is performed; The step 2 comprises: combining the base material connection part for forming the first and second wing parts and the hook connection part for forming the hook part while conveying them; and cutting them into a predetermined shape to form the wing parts before division; in the wing parts before division, the first and second wing parts respectively having the hook parts are connected together; Step 3: overlap the main surface of one side of the wing member before the division with the rear piece connection part in the main body connection part; overlap the main surface of the front piece connection part in the main body connection part with the other main surface of the rear piece connection part in the main body connection part; then, combine the wing member before the division with the overlapped front piece connection part and the rear piece connection part in the main body connection part to form a first connection part combining the front piece connection part and the rear piece connection part in the main body connection part; and a second connection part combining the wing member before the division with the rear piece connection part in the main body connection part; Step 4: cutting the wing member and the main body connecting portion that are connected to each other before being divided to form the single piece; in the single piece, a pair of the first connecting parts connects the two ends of the front piece and the rear piece to each other, and a pair of the second connecting parts connects the rear piece and the wing member to each other; In the step 3, the first connecting portion is formed so that the tear strength of the first connecting portion is lower than the tear strength of the front sheet connecting portion and the back sheet connecting portion where the first connecting portion is not formed.

[0033] According to the above method, the present invention can continuously and efficiently manufacture disposable wearing articles in which the wing member does not interfere with the operation when tearing along the first joint portion serving as the tearing guide line.

[0034] Preferably, (a) after the wing part before division is overlapped with the one main surface of the rear piece connection part in the main body connection part, in order to configure an adhesive coating part between the wing part before division and the rear piece connection part in the main body connection part; adhesive is coated on the rear piece connection part in the main body connection part, the substrate connection part or the wing part before division to form the adhesive coating part; (b) in the step 3, after the wing part before division is overlapped with the one main surface of the rear piece connection part in the main body connection part, the wing part before division is temporarily fixed to the rear piece connection part of the main body connection part via the adhesive coating part to form the second connecting part.

[0035] In this case, by temporarily fixing the wing members before being divided, the present invention can improve the conveying speed of the production line and easily increase the number of products produced per unit time, compared with the case where temporary fixing is not performed.

[0036] Preferably, in the process 2, the substrate connecting part and the hook connecting part are conveyed, and the hook connecting part is divided to form the first and second hook connecting parts; and the first and second hook connecting parts are cut off to form a pair of hook parts; then, the pair of hook parts are spaced apart from each other in the conveying direction; and are combined with the substrate connecting part to form the first connecting part; then, the first connecting part is folded so that the hook part is sandwiched between the substrate connecting parts to form the second connecting part; and the second connecting part is cut off between the adjacent pair of hook parts to form the wing part before division.

[0037] In this case, different devices can be used to effectively cut off the first and second hook connection parts and the base material connection part in the second connection part, which can easily improve production efficiency. In addition, the present invention can suppress the wear of the cutting blade used for cutting and realize the effective use of the production line.

[0038] The advantages of the present invention are to provide a disposable wearing article in which the wing member does not interfere with the operation when tearing and a method for manufacturing the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 (a) is a rear view of the disposable wearing article of embodiment 1 of the present invention; Figure 1 (b) is the front view. Figure 2 In Example 1 of the present invention, Figure 1 (a) is a cross-sectional view taken along line AA. Figure 3 It is a perspective view of the main parts of the disposable wearing article according to embodiment 1 of the present invention. Figure 4 Schematic diagram of the manufacturing process of the disposable wearing article according to Example 1 of the present invention. Figure 5 (a) is a rear view of a disposable wearing article according to embodiment 2 of the present invention; Figure 5 (b) is the front view. Figure 6 It is a schematic diagram of the manufacturing process of the disposable wearing article according to Example 2 of the present invention. Figure 7 (a) is a rear view of a disposable wearing article according to embodiment 3 of the present invention; Figure 7 (b) is the front view. Figure 8 Schematic diagram of the manufacturing process of the disposable wearing article according to Example 4 of the present invention. Fig. 9 (p) is the method according to Embodiment 4 of the present invention. Figure 8 The cross-sectional view after cutting through the PP line in the figure; Fig. 9 (q) is along Figure 8 The cross-section diagram after cutting along the QQ line in the figure; Fig. 9 (r) is along Figure 8 Cross-section view after cutting along the RR line. Fig.10 In Example 4 of the present invention, Figure 8 Cross-sectional view after cutting along the SS line. Fig.11 This is an enlarged view of the main parts of the disposable wearing article of the present invention. (Deformation 1) Fig.12 This is a cross-sectional view of the disposable wearing article of the present invention. (Deformation 2) Fig.13 This is a cross-sectional view of the disposable wearing article of the present invention. (Deformation 3) Fig.14 This is a schematic diagram of the manufacturing process of the disposable wearing article of the present invention. (Variant 5) Fig.15 In Example 2 of the present invention, Figure 5 (a) is a cross-sectional view taken along line BB. Fig.16 In Example 3 of the present invention, Figure 7 (a) is a cross-sectional view taken along line CC. Fig.17 This is a schematic diagram of the manufacturing process of the disposable wearing article of the present invention. (Variation 6) Fig.18 It is a three-dimensional diagram of a conventional disposable wearable article. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0041] Example 1: Figure 1 to Figure 4 As shown, the disposable wearing article 10 of embodiment 1 and the manufacturing method thereof will be described below.

[0042] Figure 1 (a) is a rear view of the disposable wearing article 10 of Example 1; Figure 1 (b) is the front view. Figure 2 It is along Figure 1 (a) is a cross-sectional view taken along line AA. Figure 3 It is a perspective view of the main part of the wearing article 10.

[0043] like Figure 1 (a) Figure 1 (b) Figure 2 and Figure 3As shown, in the disposable wearing article 10, the two end portions 12a, 12b, 14a, 14b of the front piece 12 and the back piece 14 are respectively connected to each other via a pair of first connecting parts 20a, 20b; the two end portions of the crotch portion 16 are connected to the front piece 12 and the back piece 14; and the crotch portion 16 is folded back at the middle position 17.

[0044] The front sheet 12 and the back sheet 14 may be constructed as a stretchable composite sheet, for example, by placing elastic components between nonwoven fabric sheets and combining the nonwoven fabric sheets and the elastic components at appropriate locations, so as to make them stretchable; or they may be constructed as non-stretchable. Figure 1 (a) and Figure 1 The method shown in (b) or the method further folded is packaged and provided to consumers.

[0045] The front sheet 12 is disposed on the abdomen side of the wearer when worn, and the back sheet 14 is disposed on the back side of the wearer when worn. When a space is provided between the front sheet 12 and the back sheet 14, a waist opening is formed along the upper edge 12p of the front sheet 12 and the upper edge 14p of the back sheet 14, and a pair of leg openings are formed on both sides of the crotch portion 16.

[0046] like Figure 3 As shown, the first joining parts 20a, 20b are formed by intermittently heat-sealing the front sheet 12 and the back sheet 14; a plurality of heat-sealed portions 20s extending obliquely toward the upper edge 12p and the lower edge 12q of the front sheet 12 are arranged at intervals from each other.

[0047] The front panel 12 is provided with a pair of tear guide lines 24a and 24b with a space between the first joint portions 20a and 20b.

[0048] The pair of wing members 18a, 18b have a first portion 18p on the root side and a second portion 18q on the front end side, and are arranged so that the second portions 18q face each other; the first portion 18p and the rear panel 14 are connected to each other via second connection portions 22a, 22b; the second connection portions 22a, 22b, for example, Figure 3 As shown in the perspective view of the main parts observed from the back, it is formed by heat sealing, ultrasonic bonding and other methods so that it extends continuously on the back sheet 14 between the first bonding parts 20a, 20b and the tear guide lines 24a, 24b.

[0049] The second part 18q of the wing parts 18a and 18b has a fastening part; the fastening part is configured to be fastened to one main surface 12s of the front piece 12 in a detachable manner. For example, the fastening part is a hook part 19a and 19b of a Velcro tape, which is arranged on the second part 18q of the wing parts 18a and 18b in a manner opposite to one main surface 12s of the front piece 12, and as a result, the hook surface 19s of the hook part 19a and 19b is engaged with one main surface 12s of the front piece 12, so that it can be fastened to one main surface 12s of the front piece 12 in a detachable manner. Preferably, the hook part 19a and 19b can be easily installed and removed from the front piece; and even if it is repeatedly installed and removed, it can be stably fastened; the fastening part can also be composed of components such as adhesive sheets, hooks, buttons, etc.

[0050] In order to avoid hook components 19a, 19b from being exposed, the second part 18q of wing components 18a, 18b has been folded along fold line 18r. As a result, hook components 19a, 19b can not interfere with other articles, and disposable wearing articles can be easily handled when being packed or beginning to wear.

[0051] The pair of tear guide lines 24a, 24b are formed so that the front sheet 12 can be torn and separated along the tear guide lines 24a, 24b. That is, the pair of tear guide lines 24a, 24b are formed so that the connection portion that connects the front sheet 12 and the back sheet 14 in a ring shape or a cylindrical shape and continues through the first connecting parts 20a, 20b on the front sheet 12 is torn and separated.

[0052] Specifically, if Figure 3 As shown, the tear guide lines 24a, 24b are linear perforations with a plurality of penetrating portions 24s, which penetrate between the one main surface 12s and the other main surface 12t of the front sheet 12, and the tear guide lines 24a, 24b extend between the upper edge 12p and the lower edge 12q of the front sheet 12. The tear guide lines 24a, 24b of the linear perforations can be easily formed, and can also be formed by forming non-penetrating slits on the front sheet 12 or removing part of the material of the front sheet 12.

[0053] The tear strength of the tear guide lines 24a, 24b is lower than the tear strength of the portion of the front panel 12 where the tear guide lines 24a, 24b are not formed. As a result, when both sides of the tear guide lines 24a, 24b of the front panel 12 are pulled in opposite directions, the front panel 12 is torn along the tear guide lines 24a, 24b, and is not torn at the portion where the tear guide lines 24a, 24b are not formed.

[0054] The tear guide lines 24a, 24b and the second joints 22a, 22b are formed so that the tear strength of the tear guide lines 24a, 24b is lower than the tear strength of the second joints 22a, 22b. As a result, when the portion of the front sheet 12 between the pair of tear guide lines 24a, 24b and any one of the wing members 18a, 18b are pulled in a direction away from each other, the front sheet 12 can be completely torn apart along the tear guide lines 24a, 24b, and the wing members 18a, 18b will not be detached from the rear sheet 14.

[0055] In addition, preferably, the tear guide lines 24a, 24b and the first joints 20a, 20b are formed so that the tear strength of the tear guide lines 24a, 24b is lower than the tear strength of the first joints 20a, 20b joining the front sheet 12 and the back sheet 14. As a result, when the portion between the pair of tear guide lines 24a, 24b of the front sheet 12 and the back sheet 14 are pulled in a direction away from each other, the front sheet 12 can be completely torn apart along the tear guide lines 24a, 24b, and the front sheet 12 and the back sheet 14 will not be separated at the first joints 20a, 20b.

[0056] That is, assuming that the tear strength of the tear guide lines 24a and 24b is F f The tear strength of the portion of the front piece 12 where the tear guide lines 24a and 24b are not formed is F0, the tear strength of the first connecting parts 20a and 20b is F1, and the tear strength of the second connecting parts 22a and 22b is F2. The structure satisfies the following formulas 1 and 2, and is preferably structured to satisfy formula 3. F f <F0 (Formula 1) F f <F2 (Formula 2) F f <F1 (Formula 3)

[0057] The tear strength was measured in accordance with JIS L 1096C method (trapezoidal method).

[0058] The tear strength of the tear guide lines 24a and 24b is measured in the following manner: a sample of the front panel 12 of a specified size is prepared so that the tear guide lines 24a and 24b are located in the center of the long side direction of the sample; then, with the tear guide lines 24a and 24b arranged between the fixed side clamp and the movable side clamp of the test device, a tear test is carried out according to the specified conditions (specified clamp spacing, specified tensile speed), and the maximum strength [Kgf (N)] displayed during tearing is measured and expressed as the average value of three measurements.

[0059] For example, assuming that the width of the blade forming the linear perforations is W (mm) and the gap size between adjacent linear perforations is D (mm), the tear strength of the tear guide lines 24a and 24b of the linear perforations is as shown in Table 1 below. Table 1 W(mm) D(mm) <![CDATA[F0(N)]]> 2.5 1.0 3.38 3.5 1.0 3.52 2.5 5.0 5.61

[0060] The tear strength of the portion of the front panel 12 where the tear guide lines 24a, 24b are not formed is measured in the following manner: a sample of the front panel 12 of a specified size that does not include the tear guide lines 24a, 24b is prepared; while the sample is clamped by the fixed side clamp and the movable side clamp of the test device, a tear test is performed under specified conditions, the maximum strength displayed during tearing is measured, and the average value of three measurements is expressed.

[0061] The tearing strength of the first joint 20a, 20b is measured in the following manner: a sample of a specified size is prepared in which the first joint 20a, 20b is located in the center of the long side direction of the sample and the front piece 12 and the rear piece 14 are arranged on both sides; then, the first joint 20a, 20b is arranged between the fixed side clamp and the movable side clamp of the test device, and the front piece 12 of the sample is clamped by any one of the fixed side clamp and the movable side clamp; the rear piece 14 of the sample is clamped by the other; in this state, a tearing test is carried out according to the specified conditions, and the maximum strength displayed during tearing is measured, and it is expressed as the average value of three measurements.

[0062] The tearing strength of the second joint 22a, 22b is measured in the following manner: a sample of specified dimensions is prepared in which the second joint 20a, 20b is located in the center of the long side direction of the sample, and the front piece 12 and the wing parts 18a, 18b are arranged on both sides; then, the second joint 22a, 22b is arranged between the fixed side clamp and the movable side clamp of the test device, and the front piece 12 of the sample is clamped by any one of the fixed side clamp and the movable side clamp; and the wing parts 18a, 18b of the sample are clamped by the other; in this state, a tearing test is carried out according to the specified conditions, and the maximum strength displayed during tearing is measured, and it is expressed as the average value of three measurements.

[0063] For example, suppose Figure 3 The sealing width of the heat-sealed portion 20s is W (mm), and the tear strength of the first bonding portions 20a and 20b is shown in Table 2 below. Table 2 W(mm) <![CDATA[F1(N)]]> 5.0 12.67 3.0 6.83 2.0 5.24

[0064] The disposable wearing article 10 is made by tearing the front panel 12 along the tear guide lines 24a, 24b; then, the torn portion is wrapped around the legs; the folded second portion 18q of the wing members 18a, 18b is pulled out and turned to the side of the front panel 12; and the hook members 19a, 19b are fastened to one main surface 12s of the front panel 12, so that the legs can be passed through the leg openings, so that the wearer can stand.

[0065] In the disposable wearing article 10, since the wing members 18a, 18b are arranged along the back sheet 14 and away from the tear guide lines 24a, 24b, the wing members 18a, 18b do not interfere with the operation when tearing along the tear guide lines.

[0066] like Figure 4 As shown, the manufacturing method of the disposable wearing article 10 of the present invention will be described below. Figure 4 This is a schematic diagram of the manufacturing process of disposable wearing products.

[0067] like Figure 4 As shown, the manufacturing method of the disposable wearing article 10 of the present invention includes the following steps 1 to 4.

[0068] (i) Step 1: forming a main body connecting portion 11; in the main body connecting portion 11, a single-piece portion 11k is connected together; the single-piece portion 11k includes a front piece 12 and a back piece 14 formed with first and second tear guide lines 24a and 24b, and a crotch portion 16 combined with the front piece 12 and the back piece 14; then, conveying is performed in a state in which the front piece connecting portion 12k connected to the portion that becomes the front piece 12 and the back piece connecting portion 14k connected to the portion that becomes the back piece 14 are separated from each other.

[0069] The main body connection part 11 can be formed by a well-known method. For example, after arranging a plurality of elastic components 12i, 14i between sheets of non-woven fabrics, a stretchable composite sheet is used to combine sheets of non-woven fabrics and elastic components 12i, 14i with each other at appropriate positions to form the front sheet connection part 12k and the back sheet connection part 14k; the elastic components 12i, 14i are stretched and transmitted. The absorbent 18 for absorbing and retaining liquids such as menstrual blood and / or urine can be arranged on the main body connection part 11, or it can be not arranged.

[0070] Step 2: While conveying the base material connecting portion 30 for forming the first and second wing parts 18a, 18b and the hook connecting portions 32, 34 for forming the hook parts 19a, 19b, they are combined together; and cut into a specified shape to form a wing part 31 before division; in the wing part 31 before division, the first and second wing parts 18a, 18b respectively provided with the hook parts 19a, 19b are connected together.

[0071] The wing member 31 before division can be configured in various forms. For example, the wing member 31 before division can be configured as follows.

[0072] First, the base material connecting portion 30 and the first and second hook connecting portions 32 and 34 forming the first and second hook members 19a and 19b of the hook and loop fastener are conveyed in respective connecting directions.

[0073] Then, on the base material connection part 30, along a pair of side edges 30m, 30n of the base material connection part 30, the first and second hook connection parts 32, 34 are provided at intervals from each other, and then they are bonded together by heat sealing, ultrasonic bonding, etc., to form the first connection part 30a. At this time, the hook surfaces of the first and second hook connection parts 32, 34 are exposed.

[0074] Then, for the first connecting portion 30a, the cutting portions 30p and 30q of the specified shape shown by the dotted lines are cut off along a pair of side edges 30m and 30n of the base material connecting portion 30 to form the second connecting portion 30b; the second connecting portion 30b is provided with hook parts 19a and 19b opposite to each other formed by cutting off the first and second hook connecting portions 32 and 34.

[0075] Next, as shown by arrow 30x, the two side parts 30u and 30v of the second connecting part 30b, on which the relative hook parts 19a and 19b are respectively provided, are folded back so that the hook parts 19a and 19b are located inside, thereby forming a third connecting part 30c; a pair of relative hook parts 19a and 19b are provided on the third connecting part 30c with a gap left between them.

[0076] Then, the third connecting portion 30c is cut off at the specified position 30y indicated by the dotted line to form the wing part 31 before division; on the wing part 31 before division, the first part 18p of the parts that become the first and second wing parts 18a and 18b are connected together; then, as shown by the arrow 31u, the orientation relative to the conveying direction is changed.

[0077] The orientation of the wing member 31 before the division is changed in order to overlap the wing member 31 before the division formed in the desired orientation with one main surface 14s of the rear sheet connection part 14k in the main body connection part 11 in the step 3 described later. If the wing member 31 before the division is formed after the orientation of the portion to be the wing member 31 before the division is changed, it is possible to overlap with one main surface 14s of the rear sheet connection part 14k in the main body connection part 11 without changing the orientation of the wing member 31 before the division.

[0078] Step 3: Overlap the wing part 31 before division with the main surface 14s of one side of the rear piece connection part 14k in the main body connection part 11; at the same time, overlap the front piece connection part 12k in the main body connection part 11 with the other main surface 14t of the rear piece connection part 14k in the main body connection part 11; then, combine the wing part 31 before division with the overlapping front piece connection part 12k and the rear piece connection part 14k in the main body connection part 11 to form the first connection part 20a, 20b that combines the front piece connection part 12k and the rear piece connection part 14k in the main body connection part 11; and the second connection part 22a, 22b that combines the wing part 31 before division with the rear piece connection part 14k in the main body connection part 11.

[0079] At this time, in order to make the boundary line of the parts that become the first and second wing parts 18a and 18b in the wing part 31 before division coincide with the boundary line of the part 11k that becomes a single piece in the main body connecting part 11, the wing part 31 before division is overlapped with a main surface 14s of the rear piece connecting part 14k in the main body connecting part 11.

[0080] The sub-process 1 of overlapping the wing part 31 before division with the main surface 14s of one side of the rear piece connection part 14k in the main body connection part 11 can be performed before the sub-process 2 of overlapping the front piece connection part 12k in the main body connection part 11 with the main surface 14t of the other side of the rear piece connection part 14k in the main body connection part 11, or can be performed after the sub-process 2 or simultaneously with the sub-process 2.

[0081] If sub-process 1 and sub-process 2 are performed simultaneously, the first joint portions 20a, 20b for joining the front panel 12 and the back panel 14 together and the second joint portions 22a, 22b for joining the wing parts 18a, 18b and the back panel 14 together can be formed simultaneously, thereby simplifying the process.

[0082] Step 4: Cutting the split front wing component 31 and the main body connecting portion 11 that are combined together to form the single piece; in the single piece, a pair of the first connecting parts 20a, 20b connect the two end portions 12a, 12b, 14a, 14b of the front piece 12 and the rear piece 14 together, and a pair of the second connecting parts 22a, 22b connect the rear piece 14 and the first and second wing components 18a, 18b together.

[0083] In the above-mentioned process 1 of (i), the tear strength of the first and second tear guide lines 24a, 24b is formed to be lower than the tear strength of the portion of the front piece connection portion 12k where the first and second tear guide lines 24a, 24b are not formed.

[0084] As a result, the tear guide lines 24a, 24b can be formed on the front panel 12, and the disposable wearing article 10 can be continuously and efficiently manufactured without the wing members 18a, 18b interfering with the operation when the front panel 12 is torn along the tear guide lines 24a, 24b.

[0085] Furthermore, since the elastic members 12i, 14i of the front sheet connecting portion 12k and the back sheet connecting portion 14k are released from their stretched state by being cut, the front sheet 12 and the back sheet 14 of the wearing article 10 are in a contracted state after being cut.

[0086] Example 2: Figure 5 , Figure 6 and Fig.15 As shown, the disposable wearing article 10 of embodiment 2 in which the tear guide line is the first binding part 20a, 20b and the manufacturing method thereof will be described below. The structure of embodiment 2 is the same as that of embodiment 1. The same symbols as those of embodiment 1 will be used for the same components as those of embodiment 1, and the description will be centered on the differences from embodiment 1.

[0087] Figure 5 (a) is a rear view of the disposable wearing article 10a of Example 2; Figure 5 (b) is the front view. Fig.15 It is along Figure 5 (a) is a cross-sectional view taken along line BB.

[0088] like Figure 5 (a) Figure 5 (b) and Fig.15 As shown, the disposable wearing article 10a of the second embodiment is the same as the first embodiment, and is provided with a front panel 12, a back panel 14, a crotch portion 16 and a pair of wing members 18a, 18b.

[0089] Different from the first embodiment, the tearing guide lines 24a, 24b of the linear eyelets in the first embodiment are not formed on the front piece 12 of the disposable wearing article 10a. In addition, the first binding parts 20a, 20b that bind the front piece 12 and the back piece 14 together and the second binding parts 22a, 22b that bind the wing parts 18a, 18b and the back piece 14 together are separated from each other. That is, the wing parts 18a, 18b are separated from the first binding parts 20a, 20b and the two end parts 14a, 14b of the back piece 14 and are arranged.

[0090] Moreover, the tearing guide line is the first joint part 20a, 20b. That is, the first joint part 20a, 20b is formed so that the connection part connecting the front piece 12 and the back piece 14 can be torn and separated at the first joint part 20a, 20b. Specifically, the tearing strength of the first joint part 20a, 20b is lower than the tearing strength of the part of the front piece 12 and the back piece 14 where the first joint part 20a, 20b is not formed. For example, the first joint part 20a, 20b is formed by intermittent heat sealing, and the bonding strength is weakened compared with the case of continuous heat sealing. In addition, as long as the tearing strength of the first joint part 20a, 20b can be lower than the tearing strength of the part of the front piece 12 and the back piece 14 where the first joint part 20a, 20b is not formed, various bonding methods such as ultrasonic welding, bonding using hot melt adhesive, and suture bonding can be used.

[0091] When the front sheet 12 and the back sheet 14 are pulled in the direction of being separated from each other, the wearing article 10a will not be detached except at the first joint portions 20a, 20b, but can be completely torn apart along the first joint portions 20a, 20b.

[0092] Since the wing members 18a and 18b are disposed after being separated from the first connecting portions 20a and 20b, they do not interfere with the operation when being torn along the first connecting portions 20a and 20b.

[0093] Preferably, the tear strength of the first joint 20a, 20b is lower than the tear strength of the second joint 22a, 22b. As a result, when the front panel 12 and the wing components 18a, 18b are pulled in a direction away from each other, the wing components 18a, 18b will not fall off from the back panel 14, but can be torn along the first joint 20a, 20b.

[0094] like Figure 6 As shown, the manufacturing method of the disposable wearing article 10a of the present invention will be described below. Figure 6 This is a schematic diagram of the manufacturing process of disposable wearing products.

[0095] like Figure 6As shown, the method for manufacturing the disposable wearing article 10a of the present invention includes the following steps 1 to 5.

[0096] (i) Process 1: forming a main body connecting portion 11; in the main body connecting portion 11, a single-piece portion 11k is connected together; the single-piece portion 11k includes a front piece 12, a back piece 14, and a crotch portion 16 combined with the front piece 12 and the back piece 14; then, conveying is performed in a state where a front piece connecting portion 12k connected to the portion that becomes the front piece 12 and a back piece connecting portion 14k connected to the portion that becomes the back piece 14 are separated from each other.

[0097] (ii) Step 2: While conveying, the base material connecting portion 30 for forming the first and second wing parts 18a, 18b and the hook connecting portions 32, 34 for forming the hook parts 19a, 19b are combined with each other; and cut into a specified shape to form the first and second wing parts 18a, 18b respectively provided with the hook parts 19a, 19b.

[0098] The first and second wing members 18a and 18b can be formed in various ways. For example, the first and second wing members 18a and 18b are formed as follows.

[0099] First, the base material connecting portion 30 and the first and second hook connecting portions 32 and 34 forming the first and second hook members 19a and 19b of the hook and loop fastener are conveyed in respective connecting directions.

[0100] Then, on the base material connection part 30, along a pair of side edges 30m, 30n of the base material connection part 30, the first and second hook connection parts 32, 34 are joined together to form the first connection part 30a. At this time, the first and second hook connection parts 32, 34 are joined together with the base material connection part 30 by an appropriate method such as bonding, heat sealing, ultrasonic bonding, sewing, etc., so that the hook surface is exposed.

[0101] Then, for the first connecting portion 30a, the cutting portions 30p and 30q of a specified shape shown by the dotted lines are cut off along a pair of side edges 30m and 30n of the substrate connecting portion 30 to form the second connecting portion 30b; the second connecting portion 30b is provided with hook parts 19a and 19b formed by cutting off the first and second hook connecting portions 32 and 34.

[0102] Next, as shown by arrow 30x, the two side parts 30u and 30v of the second connecting part 30b, on which the relative hook parts 19a and 19b are respectively provided, are folded back so that the hook parts 19a and 19b are located inside, thereby forming a third connecting part 30c; a pair of relative hook parts 19a and 19b are provided on the third connecting part 30c with a gap left between them.

[0103] Next, the third connection portion 30c is divided between the opposing hook members 19a, 19b and the interval is enlarged to form a pair of fourth connection portions 31a, 31b having outer edges 31m, 31n formed by the division.

[0104] Then, at a predetermined position 30z indicated by a dashed line, a pair of fourth connecting portions 31a, 31b are cut to form first and second wing members 18a, 18b provided with hook members 19a, 19b; and then, as indicated by arrow 31u, the orientation relative to the conveying direction is changed.

[0105] In order to avoid changing the orientation with respect to the conveying direction, the first and second wing members 18 a and 18 b may be formed using the base material connecting portion 30 and the hook connecting portions 32 and 34 .

[0106] (iii) Step 3: Overlap the first and second wing members 18a, 18b with one main surface 14s of the rear sheet connection portion 14k in the main body connection portion 11; then combine the first and second wing members 18a, 18b with the rear sheet connection portion 14k in the main body connection portion 11 to form second connection portions 22a, 22b.

[0107] At this time, in order to arrange the pair of wing members 18a and 18b on both sides of the boundary line of the single-piece portion 11 in the main body connecting portion 11, second bonding portions 22a and 22b are formed by heat sealing, ultrasonic bonding or the like.

[0108] (iv) Step 4: After the front piece connecting portion 12k in the main connecting portion 11 and the rear piece connecting portion 14k in the main connecting portion 11 are placed on the other side main surface 14t, the front piece connecting portion 12k and the rear piece connecting portion 14k in the main connecting portion 11 that overlap each other are combined together to form the first combining portion 20a, 20b.

[0109] The first connecting parts 22a, 22b are formed on both sides of the boundary line of the single-piece part 11k in the main connecting part 11 by heat sealing, ultrasonic bonding or the like; the first connecting parts 20a, 20b may also be connected together.

[0110] (v) Step 5: Cutting the main connecting portion 11 to form the single piece; in the single piece, a pair of the first connecting portions 20a, 20b connect the two end portions 12a, 12b, 14a, 14b of the front piece 12 and the rear piece 14 together, and a pair of the second connecting portions 22a, 22b connect the rear piece 14 and the first and second wing parts 18a, 18b together.

[0111] In step 4 of (iv) above, the first bonding portions 20a, 20b are formed so that the tear strength of the first bonding portions 20a, 20b is lower than the tear strength of the front sheet connection portion and the back sheet connection portion where the first bonding portions 20a, 20b are not formed.

[0112] In the above step (iii) 3, the pair of wing members 18a and 18b may be temporarily fixed after being overlapped with one main surface 14s of the rear sheet connecting portion 14k in the main body connecting portion 11.

[0113] like Figure 6 As shown, at this time, hot melt adhesive or other adhesive is applied to the appropriate part of the fourth connection part 31a, 31b; and adhesive application parts 36a, 36b are formed on the wing parts 18a, 18b. Alternatively, hot melt adhesive or other adhesive may be applied to the appropriate part of the rear sheet connection part 14k or the base material connection part 30 in the main body connection part 11 to form the adhesive application parts 36a, 36b.

[0114] That is, (a) after the first and second wing members 18a, 18b are overlapped with the one main surface 14s of the rear sheet connection part 14k in the main body connection part 11, in order to provide adhesive application parts 36a, 36b between the first and second wing members 18a, 18b and the rear sheet connection part 14k in the main body connection part 11; on the rear sheet connection part 14k in the main body connection part 11, the base material connection part 30 or the first and second wing members 18a, 18b Applying adhesive to form the adhesive application parts 36a, 36b; (b) in the step 3, after the first and second wing parts 18a, 18b are overlapped with the one side main surface 14s of the rear piece connection part 14k in the main body connection part 11, the first and second wing parts 18a, 18b are temporarily fixed to the rear piece connection part 14k of the main body connection part 11 via the adhesive application parts 36a, 36b, thereby forming the second connection parts 22a, 22b.

[0115] By temporarily fixing the first and second wing members 18a and 18b, the conveying speed of the production line can be increased compared to the case where the first and second wing members 18a and 18b are not temporarily fixed, and the number of products produced per unit time can be easily increased.

[0116] As a result, the present invention can continuously and efficiently manufacture disposable wearing articles 10a in which the wing parts 18a, 18b do not interfere with the operation when the connecting portion connecting the front panel 12 and the back panel 14 is torn along the first joint parts 20a, 20b as the tearing guide lines.

[0117] It is also possible to not form the adhesive coating parts 36a, 36b, but to overlap the main surface 14s of one side of the wing parts 18a, 18b and the rear piece connecting part 14k in the main body connecting part 11; then, use appropriate parts to press the wing parts 18a, 18b, and at the same time, combine the wing parts 18a, 18b and the rear piece connecting part 14k in the main body connecting part 11 together.

[0118] Alternatively, instead of temporarily fixing the wing members 18a and 18b, the wing members 18a and 18b and the rear sheet connecting portion 14k of the main body connecting portion 11 may be connected to each other to form the second connecting portions 22a and 22b.

[0119] In addition, instead of forming a pair of the wing parts 18a and 18b, the wing parts 18a and 18b can be overlapped with the main surface 14s of one side of the rear piece connection part 14k in the main body connection part 11 in an appropriate order, and then the wing parts 18a and 18b and the rear piece connection part 14k in the main body connection part 11 are combined with each other.

[0120] Example 3: Figure 7 and Fig.16 As shown, the disposable wearing article 10b of embodiment 3 will be described below.

[0121] Figure 7 (a) is a rear view of the disposable wearing article 10b of Example 3; Figure 7 (b) Main view. Fig.16 For along Figure 7 (a) is a cross-sectional view taken along line CC.

[0122] like Figure 7 and Fig.16 As shown, the first part 18p of the wing parts 18a, 18b overlaps with one of the two end parts 14a, 14b of the back piece 14; each first part 18p of the wing parts 18a, 18b is connected to the back piece 14 via two second connecting parts 22a, 22b and 23a, 23b; the tear guide line is the first connecting part 20a, 20b.

[0123] One second bonding portion 22a, 22b is formed at a position away from the first bonding portion 20a, 20b, and the other second bonding portion 23a, 23b is formed to overlap with the first bonding portion 20a, 20b.

[0124] The disposable wearing article 10b of the third embodiment can be manufactured by using the wing member 31 before being divided which is formed in the same manner as in the first embodiment, for example, by the following steps.

[0125] First, the wing part 31 before separation is overlapped with the main surface 14s of one side of the rear sheet connecting part 14k in the main body connecting part 11; then, the wing part 31 before separation is combined with the rear sheet connecting part 14k in the main body connecting part 11 by heat sealing, ultrasonic bonding, adhesion, etc. to form a second connecting part 22a, 22b.

[0126] Next, the main connecting part 11 is folded back; and the front piece connecting part 12k of the main connecting part 11 is overlapped with the other side main surface 14t of the rear piece connecting part 14k of the main connecting part 11; then, the wing part 31 before separation and the overlapping front piece connecting part 112k and the rear piece connecting part 14k of the main connecting part 11 are combined together by heat sealing, ultrasonic bonding or the like to form the first combining part 20a, 20b and the other second combining part 23a, 23b.

[0127] Then, the wing member 31 and the main body connection portion before being divided, which are bonded to each other, are cut to form a single piece.

[0128] The first connecting parts 20a, 20b and the second connecting parts 22a, 22b, 23a, 23b are formed so that the tear strength of the first connecting parts 20a, 20b is lower than the tear strength of the second connecting parts 22a, 22b, 23a, 23b.

[0129] Example 4: Figure 8 to Figure 10 As shown, the disposable wearing article 10c of embodiment 4 and the manufacturing method thereof will be described below.

[0130] Figure 8 Schematic diagram of the manufacturing process of the disposable wearing article 10c of the present invention. Fig. 9 (p) is along Figure 8 The cross-sectional view after cutting through the PP line in the figure; Fig. 9 (q) is along Figure 8 The cross-section diagram after cutting along the QQ line in the figure; Fig. 9 (r) is along Figure 8 Cross-section view after cutting along the RR line. Fig.10 It is along Fig. 9 Cross-sectional view after cutting along the SS line.

[0131] like Figure 8 (j) and Fig.10 As shown, the disposable wearing article 10c of the present invention is configured such that the hook members 19a, 19b of the wing members 18a, 18b overlap with the two top portions 14a, 14b of the back panel 14.

[0132] like Figure 8 and Fig. 9 As shown, the method for manufacturing the disposable wearing article 10c of the present invention comprises the following steps 1 to 5.

[0133] (i) Process 1: forming a main body connecting portion 11; in the main body connecting portion 11, a single-piece portion 11k is connected together; the single-piece portion 11k includes a front piece 12, a back piece 14, and a crotch portion 16 combined with the front piece 12 and the back piece 14; then, conveying is performed in a state where a front piece connecting portion 12k connected to the portion that becomes the front piece 12 and a back piece connecting portion 14k connected to the portion that becomes the back piece 14 are separated from each other.

[0134] (ii) Step 2: While conveying, the base material connecting portion 30 for forming the first and second wing parts 18a, 18b and the hook connecting portion 33 for forming the hook parts 19a, 19b are combined with each other; and cut into a specified shape to form a wing part 31a before division; in the wing part 31a before division, the first and second wing parts 18a, 18b respectively provided with the hook parts 19a, 19b are connected together.

[0135] The wing member 31a before division can be formed in various ways. For example, the wing member 31a before division can be formed as follows.

[0136] First, at the center of the width direction of the base material connection part 30, a gap is provided between the side edges 30m and 30n of the base material connection part 30, and the hook connection part 33 is combined to form the first connection part 37. At this time, the hook connection part 33 is combined with the base material connection part 30 by bonding, heat sealing, etc., so that the hook surface is exposed.

[0137] Then, the portions adjacent to the pair of side edges 30 m and 30 nn of the base material connecting portion 30 are folded back toward the hook connecting portion 33 side.

[0138] Then, hot melt adhesive is applied to the portions adjacent to the pair of side edges 30 m and 30 n of the substrate connection portion 30 , and adhesive application portions 38 a and 38 b are formed along the pair of side edges 30 m and 30 n of the substrate connection portion 30 .

[0139] Then, the connecting portion 37 is cut at a predetermined position 37x indicated by a dotted line to form a pre-segmentation wing member 31a having a pre-segmentation hook member 33k cut from the hook connecting portion 33 and adhesive application portions 38a, 38b; then, the orientation relative to the conveying direction is changed.

[0140] (iii) Step 3: Overlap the wing member 31a before division with one main surface 14s of the rear piece connection portion 14k in the main body connection portion 11; and overlap the front piece connection portion 12k in the main body connection portion 11 with the other main surface 14t of the rear piece connection portion 14k in the main body connection portion 11; then, combine the wing member 31a before division with the overlapping front piece connection portion 12k and the rear piece connection portion 14k in the main body connection portion 11 to form the first connection portion 20a, 20b that combines the front piece connection portion 12k and the rear piece connection portion 14k in the main body connection portion 11 to form the second connection portion that combines the wing member 31a before division with the rear piece connection portion 14k in the main body connection portion 11 to form the first connection portion 20a, 20b that combines the front piece connection portion 12k and the rear piece connection portion 14k in the main body connection portion 11 to form the second connection portion.

[0141] For example, the main connecting portion 11 is folded back; and the front connecting portion 12k in the main connecting portion 11 is overlapped with the other side main surface 14t of the rear connecting portion 14k in the main connecting portion 11; then, the front connecting portion 12k and the rear connecting portion 14k in the main connecting portion 11 that are overlapped are combined together to form the first combining portion 20a, 20b.

[0142] Then, the wing part 31a before separation is overlapped with the other side main surface 14s of the rear piece connection part 14k in the main body connection part 11; the wing part 31a before separation and the rear piece connection part 14k in the main body connection part 11 are combined with each other through the adhesive coating parts 38a and 38b to form the second connection parts 22a and 22b.

[0143] (iv) Step 4: Cutting the split front wing parts 31a and the main body connecting part 11 that are bonded together to form the single piece; in the single piece, a pair of the first bonding parts 20a, 20b bond the two end parts 12a, 12b, 14a, 14b of the front piece 12 and the rear piece 14 together, and a pair of the second bonding parts 22a, 22b bond the rear piece 14 and the first and second wing parts 18a, 18b together.

[0144] In step 3 of (iii) above, the first joining portions 20a, 20b are formed so that the tear strength of the first joining portions 20a, 20b is lower than the tear strength of the portions of the front sheet connection portion 12k and the rear sheet connection portion 14k where the first joining portions 20a, 20b are not formed.

[0145] In step 3, before the main body connecting part 11 is folded back, the wing member 31a before being divided can be overlapped with one side main surface 14s of the rear piece connecting part 14k in the main body connecting part 11; then, the wing member 31a before being divided and the rear piece connecting part 14k in the main body connecting part 11 are combined together to form the second combined parts 22a, 22b; then, after the main body connecting part 11 is folded back, the front piece connecting part 12k in the main body connecting part 11 is overlapped with the other side main surface 14t of the rear piece connecting part 14k in the main body connecting part 11; and then, the front piece connecting part 12k and the rear piece connecting part 14k in the main body connecting part 11 that are overlapped are combined together to form the first combined parts 20a, 20b.

[0146] In this case, in order to temporarily fix the wing parts 18a, 18b on one main surface 14s of the rear panel connection part 14k in the main body connection part 11, the adhesive coating parts 38a, 38b are used to form the second connection parts 22a, 22b by heat sealing, ultrasonic bonding or the like.

[0147] Alternatively, in process 3, the main connecting part 11 may be folded back and the front piece connecting portion 12k of the main connecting part 11 may be overlapped with the rear piece connecting portion 14k; at this time, the front piece connecting portion 14k and the rear piece connecting portion 14k are not combined together; or they may be temporarily fixed; then, the wing component 31a before division is overlapped with the rear piece connecting portion 14k of the main connecting part 11, and then the wing component 31a before division is combined with the main body continuum 11, thereby forming the first combining portions 20a, 20b and the second combining portions 22a, 22b at the same time.

[0148] Deformation method 1: Fig.11 This is an enlarged view of the main parts of the disposable wearing article of deformation mode 1. Fig.11As shown in the figure, a plurality of elastic members 13 such as rubber threads are provided on the front sheet 12. In the linear holes constituting the tear guide lines 24a and 24b, the elastic members 13x intersecting the penetration portion 24s between the main surfaces 12s and 12t of the front sheet 12 are cut when the penetration portion 24s is formed, but the elastic members 13a and 13b intersecting the non-penetration portion 24x between the adjacent penetration portions 24s are not cut. These elastic members 13a and 13b that are not cut are not cut even if the front sheet 12 is torn along the tear guide lines 24a and 24b, and therefore, they need to be torn off when wearing the disposable wearing article.

[0149] In order to prevent the uncut elastic members 13a and 13b from remaining, an auxiliary cutting line 25 is provided in the vicinity of the tearing guide lines 24a and 24b.

[0150] The auxiliary cutting line 25 is formed with a pitch smaller than the linear perforations of the tearing guide lines 24a and 24b, so that the front sheet 12 is torn along the tearing guide lines 24a and 24b instead of being torn along the auxiliary cutting line 25. For example, the elastic component 13 is cut in the vicinity of the tearing guide lines 24a and 24b using a cutter whose blade pitch is set smaller than the linear perforations of the tearing guide lines 24a and 24b. At this time, it should be ensured that the nonwoven fabric of the front sheet 12 is not cut.

[0151] To form the auxiliary cutting line 25, the same anvil as that used to form the linear perforations of the tearing guide lines 24a, 24b may be used, or other devices may be used.

[0152] The auxiliary cutting line 25 may also be formed by fusing the elastic member 13 or the like.

[0153] An auxiliary cutting line 25 can be used to cut at least the elastic parts 13a and 13b which would not be cut when forming the tear guide lines 24a and 24b if there were no auxiliary cutting line 25 before forming the tear guide lines 24a and 24b; or while forming the tear guide lines 24a and 24b; or after forming the tear guide lines 24a and 24b.

[0154] Deformation method 2: Fig.12 As shown in the cross-sectional view of the disposable wearing article 10d, the second portions 18q of the wing members 18a and 18b may be folded so that the hook surfaces 19s of the hook members 19a and 19b face the rear sheet 14.

[0155] Deformation method 3: Fig.13As shown in the cross-sectional view of the disposable wearing article 10e, the second portions 18q of the wing members 18a and 18b may be arranged along one main surface 14s of the rear sheet 14 without being folded so that the hook surfaces 19s of the hook members 19a and 19b are exposed.

[0156] Deformation 4: The second portion 18q of the wing members 18a and 18b can be folded multiple times.

[0157] Deformation method 5: Fig.14 As shown, the manufacturing process of the disposable wearing article according to modification 5 will be described below. Fig.14 In the fifth modification, the first and second wing members 18a and 18b are manufactured without cutting the trimming portions from the base connecting portion 30 and the hook connecting portion 33.

[0158] like Fig.14 As shown, the base material connecting portion 30 for forming the first and second wing members 18a and 18b and the hook connecting portion 33 for forming the first and second hook members 19a and 19b are conveyed.

[0159] Then, the hook connecting portion 33 is arranged at the middle position in the width direction of the base connecting portion 30, and the hook connecting portion 33 is fixed to the base connecting portion 30 by heat sealing, ultrasonic bonding or the like, thereby forming the first connecting portion 30c.

[0160] Next, the first connection portion 30c is cut along the inner cut line 39c and the outer cut lines 39a and 39b in an appropriate order to form the first and second wing members 18a and 18b provided with either the first and second hook members 19a and 19b.

[0161] The inner cutting line 39c extends in a wave shape at the middle position in the width direction of the first connecting portion 30c, and divides the first connecting portion 30c into a portion on one side edge 30m of the base connecting portion 30 and a portion on the other side edge 30n, and simultaneously cuts the hook connecting portion 33 to form the hook members 19a and 19b. The outer cutting lines 39a and 39b extend between the side edges 30m and 30n of the base connecting portion 30 and the inner cutting line 39c, and cut one side and the other side of the first connecting portion 30c cut by the inner cutting line 39c.

[0162] Although not shown, as needed, an adhesive such as hot melt adhesive can be applied to the base connecting portion 30, the first connecting portion 30c, the first and second wing parts 18a, 18b at an appropriate time to form adhesive application portions 36a, 36b for temporary fixation on one main surface 12s of the front piece connecting portion 12k in the main body connecting portion 11.

[0163] Deformation method 6: Fig.17 As shown, the wing member 31b before the segmentation according to the deformation mode 6 will be described below. Fig.17 It is a schematic diagram of the manufacturing process of the disposable wearing article using the wing member 31b before being divided.

[0164] like Fig.17 As shown in FIG. 1 , the wing member 31b before division is formed, and the disposable wearing article is manufactured.

[0165] That is, the hook connecting portion 11 and the base connecting portion 30 are conveyed in the direction indicated by the arrow.

[0166] Then, a slit is formed at the middle position in the width direction of the hook connecting portion 33 using the slitting device 80, thereby forming the first and second hook connecting portions 32 and 34.

[0167] Next, the first and second hook connecting portions 32 and 34 are cut into predetermined lengths using the cutting slide 82. Then, the paired hook members 19p and 19q are formed in sequence, and a gap is provided in the conveying direction. The paired hook members 19p and 19q are bonded to one main surface 30s of the base material connecting portion 30 to form the first connecting portion 30d. At this time, the surface of the hook members 19p and 19q opposite to the hook surface is bonded to one main surface 30s of the base material connecting portion 30 along the side edges 30m and 30n of the base material connecting portion 30. Although not shown, before bonding the hook members 19p and 19q, for example, an adhesive is applied to predetermined positions of the base material connecting portion 30 and / or the hook members 19p and 19q.

[0168] Next, the pin embossing device 84 is used to strengthen the connection between the base material connecting portion 30 and the hook members 19 p and 19 q in the first connecting portion 30 d.

[0169] Then, the first connection portion 30d is folded by a folding device so that the hook members 19p and 19q are sandwiched between the base material connection portions 30, thereby forming the second connection portion 30e. At this time, the hook surfaces of the hook members 19p and 19q overlap with one main surface 30s of the base material connection portion 30, and the side edges 30m and 30n of the base material connection portion 30 overlap with the middle area of ​​the one main surface 30s of the base material connection portion 30 in the width direction.

[0170] Then, the second connecting part 30e is cut off at a specified position between the hook parts 19p and 19q adjacent to each other in the conveying direction by using the cutting and flipping device 88 to form the wing part 31b before division; then, while conveying the wing part 31b before division, it is rotated 90 degrees relative to the conveying direction and pasted to a specified position of the main connecting part 11.

[0171] When the cutting and flipping device 88 supports the folded side of the second connecting portion 30e, that is, the middle area in the width direction of the main surface 30s of the substrate connecting portion 30, and the side edge area adjacent to the side edges 30m and 30n of the other main surface of the second connecting portion 30e, the same as in Example 1, the cutting and flipping device 88 is used to transfer the folded side of the second connecting portion 30e, that is, the middle area in the width direction of the main surface 30s of the substrate connecting portion 30, and the side edge area adjacent to the side edges 30m and 30n of the other main surface of the second connecting portion 30e. Figure 4 Similarly, the middle area between the hook members 19 p and 19 q on the other main surface of the wing member 31 b before being divided is bonded so as to overlap with the cut position of the main body connecting portion 11 .

[0172] When the cutting and turning device 88 is transported while supporting the side opposite to the folded side of the second connecting portion 30d, that is, the middle area in the width direction of the other main surface of the substrate connecting portion 30, the same as in Example 4 is achieved. Figure 8 Similarly, the middle area between the hook members 19 p and 19 q on one main surface 30 s of the wing member 31 b before division is bonded so as to overlap with the cut position of the main body connecting portion 11 .

[0173] After the wing member 31b before being divided is attached to a predetermined position of the main body connecting portion 11, the single piece of the disposable wearing article is formed according to the manufacturing process already described.

[0174] In the sixth modification, different devices 82 and 88 can be used to cut the first and second hook connection parts 32 and 34 and the base material connection part 30e. Therefore, compared with the case where the first and second hook connection parts 32 and 34 and the base material connection part 30 are cut at the same time, the cutting can be performed efficiently, and the conveying speed can be easily increased, thereby improving the production efficiency. In addition, the present invention can suppress the wear of the cutting blade used for cutting, thereby realizing the efficient operation of the production line.

[0175] As described above, by fastening the fastening position of the second part of the wing member to one main surface of the front sheet, the connecting portion torn along the tearing guide line can be reconnected. Since the wing member is arranged along the back sheet, when the connecting portion is torn along the tearing guide line, the wing member will not hinder the operation.

[0176] The present invention is not limited to the above-described embodiments, and can be implemented by various modifications.

[0177] For example, one or more of Modifications 1 to 6 may be appropriately combined with Embodiments 1 to 4 to form a configuration.

[0178] Reference Numbers 10, 10a, 10b, 10c, 10d, 10e: Disposable wearable articles 11: Main connecting part 11k: Becoming a monolithic part 12: Front piece 12a, 12b: Both ends 12k: Front piece connection 12p: Top edge 12q: Lower edge 12s, 12t: Main side 14: Back 14a, 14b; two ends 14k: Rear plate connection 14s, 14t: Main side 16: Crotch 18a, 18b: Wing parts 19a, 19b, 19p, 19q: Hook parts, fastening parts 20a, 20b: 1st joint part, tearing guide line 22a, 22b: Second binding site 23a, 23b: Second binding site 24a, 24b: Tear guide wire, linear eyelet 30: Base material connection part 31, 31a, 31b: Wing parts before segmentation 32, 33, 34: Hook connection part 36a, 36b: Adhesive application area

Claims

1. A disposable wearing article, characterized in that: It includes: A front piece, a back piece, a crotch portion, a pair of first joining portions, a pair of wing components, a pair of second joining portions, and a pair of tear guide lines; wherein the front piece is arranged on the abdomen side of the wearer when worn; the back piece is arranged on the back side of the wearer when worn; the crotch portion is combined with the front piece and the back piece; the first joining portion combines the two ends of the front piece and the back piece together; the pair of wing components are provided with a fastening portion; the fastening portion is provided with a first part and a second part; the second parts are opposite to each other; in order to make the first part and the back piece One of the two end portions is adjacent and arranged along the main surface of the rear panel on the opposite side of the front panel; the second portion can be detached and fastened to the one main surface of the front panel; the pair of second connecting parts connect the first portions of the respective wing members to the front panel together; the pair of tear guide lines are formed to tear and separate the connecting portion connecting the front panel and the rear panel at the front panel or the first connecting portion; the tear strength of the tear guide lines is lower than the tear strength of the connecting portion without the tear guide lines.

2. The disposable wearing article according to claim 1, characterized in that: The second portion of the wing member is provided along the one main surface of the rear panel in a state where the wing member is folded so that the fastening portion is not exposed.

3. The disposable wearing article according to claim 1 or 2, characterized in that: The tear guide line is a linear eyelet formed so that a plurality of penetration portions penetrating between the one main surface and the other main surface of the front panel are arranged between the upper edge and the lower edge of the front panel.

4. The disposable wearing article according to claim 1 or 2, characterized in that: The tear guide line is the first bonding portion; the tear strength of the first bonding portion is lower than the tear strength of the portions of the front sheet and the rear sheet where the first bonding portion is not formed.

5. The disposable wearing article according to any one of claims 1 to 4, characterized in that: When viewed from a direction perpendicular to the one main surface of the rear panel, the first connecting portion and the second connecting portion overlap each other.

6. The disposable wearing article according to claims 1 to 5, characterized in that: The fastening part is the hook part of the Velcro.

7. A method for manufacturing a disposable wearing article, characterized in that: It includes: Process 1, process 2, process 3, process 4, wherein, The process 1 is to form a main body connection part; in the main body connection part, the parts that become a single piece are connected together; the parts that become a single piece include a front piece formed with a first and a second tear guide line, a back piece, and a crotch part that is combined with the front piece and the back piece; then, the front piece connection part connected to the part that becomes the front piece and the back piece connection part connected to the part that becomes the back piece are separated from each other, and the conveying is performed; The step 2 includes: combining the base material connection part for forming the first and second wing members and the hook connection part for forming the hook member while conveying them, and cutting them into a predetermined shape to form the wing members before division, wherein the first and second wing members having the hook members are connected together in the wing members before division; Step 3: overlap the main surface of one side of the wing member before the division with the rear piece connection part in the main body connection part; overlap the main surface of the front piece connection part in the main body connection part with the other main surface of the rear piece connection part in the main body connection part; then, combine the wing member before the division with the overlapped front piece connection part and the rear piece connection part in the main body connection part to form a first connection part that combines the front piece connection part and the rear piece connection part in the main body connection part; and a second connection part that combines the wing member before the division with the rear piece connection part in the main body connection part; Step 4: cutting the wing member and the main body connecting portion that are connected to each other before being divided to form the single piece; in the single piece, a pair of the first connecting parts connects the two ends of the front piece and the rear piece to each other, and a pair of the second connecting parts connects the rear piece and the wing member to each other; In the step 1, the first and second tear guide lines are formed so that the tear strength of the first and second tear guide lines is lower than the tear strength of a portion of the front panel connection portion where the first and second tear guide lines are not formed.

8. A method for manufacturing a disposable wearing article, characterized in that: It includes: Step 1, step 2, step 3, step 4, step 5, wherein: The process 1 includes forming a main body connection part; in the main body connection part, parts that become a single piece are connected together; the parts that become a single piece include a front piece, a back piece, and a crotch part that is combined with the front piece and the back piece; then, conveying the front piece connection part connected to the part that becomes the front piece and the back piece connection part connected to the part that becomes the back piece are separated from each other; The step 2 includes: combining the base material connection part for forming the first and second wing members and the hook connection part for forming the hook member while conveying them; and cutting them into a predetermined shape to form the first and second wing members each provided with the hook member; Step 3: overlapping the first and second wing members with one main surface of the rear panel connection portion in the main body connection portion; then, combining the first and second wing members with the rear panel connection portion in the main body connection portion to form a second connection portion; Step 4: overlapping the other main surface of the front piece connection part in the main body connection part and the rear piece connection part in the main body connection part; then, combining the overlapping front piece connection part and the rear piece connection part in the main body connection part together to form a first connection part; Step 5: cutting the main body connection portion to form the single piece; in the single piece, the pair of first joints join the two ends of the front piece and the rear piece together, and the pair of second joints join the rear piece and the first and second wing members together; In the step 4, the tear strength of the first connecting portion is lower than the tear strength of the front sheet connecting portion and the back sheet connecting portion where the first connecting portion is not formed.

9. The method for manufacturing a disposable wearing article according to claim 8, wherein: After the first and second wing parts are overlapped with the one main surface of the back piece connection part in the main body connection part, in order to configure an adhesive coating part between the first and second wing parts and the back piece connection part in the main body connection part, adhesive is applied to the back piece connection part in the main body connection part, the substrate connection part or the first and second wing parts to form the adhesive coating part; in the step 3, after the first and second wing parts are overlapped with the one main surface of the back piece connection part in the main body connection part, the first and second wing parts are temporarily fixed to the back piece connection part of the main body connection part via the adhesive coating part to form the second connecting part.

10. A method for manufacturing a disposable wearing article, characterized in that: It includes: Process 1, process 2, process 3, process 4, wherein, The process 1 includes forming a main body connection part; in the main body connection part, parts that become a single piece are connected together; the parts that become a single piece include a front piece, a back piece, and a crotch part that is combined with the front piece and the back piece; then, conveying the front piece connection part connected to the part that becomes the front piece and the back piece connection part connected to the part that becomes the back piece are separated from each other; The step 2 comprises: combining the base material connection part for forming the first and second wing parts and the hook connection part for forming the hook part while conveying them; and cutting them into a predetermined shape to form the wing parts before division; in the wing parts before division, the first and second wing parts respectively provided with the hook parts are connected together; Step 3: overlap the main surface of one side of the wing member before the division with the rear piece connection part in the main body connection part; overlap the main surface of the front piece connection part in the main body connection part with the other main surface of the rear piece connection part in the main body connection part; then, combine the wing member before the division with the overlapped front piece connection part and the rear piece connection part in the main body connection part to form a first connection part combining the front piece connection part and the rear piece connection part in the main body connection part; and a second connection part combining the wing member before the division with the rear piece connection part in the main body connection part; Step 4: cutting the wing member and the main body connecting portion that are combined with each other before being divided to form the single piece; in the single piece, a pair of the first joints combine the two ends of the front piece and the rear piece together, and a pair of the second joints combine the rear piece and the wing member together; In the step 3, the first connecting portion is formed so that the tear strength of the first connecting portion is lower than the tear strength of the front sheet connecting portion and the back sheet connecting portion where the first connecting portion is not formed.

11. The method for manufacturing a disposable wearing article according to claim 10, wherein: After the wing part before division is overlapped with the one main surface of the rear piece connection part in the main body connection part, in order to configure an adhesive coating part between the wing part before division and the rear piece connection part in the main body connection part, adhesive is coated on the rear piece connection part in the main body connection part, the substrate connection part or the wing part before division to form the adhesive coating part; in the step 3, after the wing part before division is overlapped with the one main surface of the rear piece connection part in the main body connection part, the wing part before division is temporarily fixed to the rear piece connection part of the main body connection part via the adhesive coating part to form the second connecting part.

12. The method for manufacturing a disposable wearing article according to claim 7, wherein: In the step 2, the base material connection part and the hook connection part are conveyed, and the hook connection part is divided to form the first and second hook connection parts; and the first and second hook connection parts are cut to form the pair of hook parts; and then, the pair of hook parts are spaced apart from each other in the conveying direction; After being combined with the base material connecting part, a first connecting part is formed; then, the first connecting part is folded so that the hook part is sandwiched between the base material connecting parts to form a second connecting part; and then the second connecting part is cut between the adjacent pair of hook parts to form the wing part before division.

13. The method for manufacturing a disposable wearing article according to claim 10, wherein: In the step 2, the base material connection part and the hook connection part are conveyed; the hook connection part is divided to form the first and second hook connection parts; and the first and second hook connection parts are cut to form a pair of the hook parts; and then, the pair of the hook parts are spaced apart from each other in the conveying direction; After being combined with the base material connecting part, a first connecting part is formed; then, the first connecting part is folded so that the hook part is sandwiched between the base material connecting parts to form a second connecting part; and then the second connecting part is cut between the adjacent pair of hook parts to form the wing part before division.

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