Disposable wearing article and manufacturing method thereof

Abstract

The invention provides a disposable wearing article capable of being completely torn along tearing guide lines. The disposable wearing article comprises a front piece 12, a rear piece 14, a crotch part 16, a pair of first combining parts 20a and 20b, a pair of wing piece components 18a and 18b, a pair of second combining parts 22a and 22b and a pair of tearing guide lines 24a and 24b. Wherein the crotch part 16 is combined with the front piece 12 and the rear piece 14; a pair of 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; a pair of flap members (18a, 18b) that are disposed along the one-side main surface (12s) of the front sheet (12) and that can be refastened to the one-side main surface (12s) of the front sheet (12); a pair of second joining portions (22a, 22b) that join the flap members (18a, 18b) and the front sheet (12) to each other; and a pair of tear guide lines (24a, 24b) formed on the front sheet (12). The tear strength of the tear guide lines (24a, 24b) is lower than the tear strength of the front sheet (12) in a portion where the tear guide lines (24a, 24b) are not formed, and is lower than the tear strength of the second bonding portions (22a, 22b).

Description

Technical Field

[0001] The present invention relates to a disposable wearing article and a manufacturing method thereof, in particular to an underpants type disposable wearing article which can be fastened again after being torn open 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.12 This is the front view of this type of disposable wear.

[0003] like Fig.12 As shown, in the underpants type disposable wearing article 150, the two ends of the front piece 152 and the back piece 157 are combined with each other at the joint 162, and the two ends of the crotch portion 160 are installed on the front piece 152 and the back piece 157. A pair of tear guide lines 132, 134 extending from the waist opening part 165 to the leg opening part 164 are formed on the two ends of the front piece 152, and a pair of wing parts 166, 168 are installed so that they cross the tear guide lines 132, 134.

[0004] The root 143 of the wing parts 166, 168 is combined with the front piece 152, and 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, wrapped around the legs of the wearer, and then the wing parts 166, 168 are fastened again, and the wearer's legs are put through the leg openings 164 before wearing. When wearing in this way, the front sheet 152 needs to be completely torn along the tear guide lines 132, 134. Summary of the invention

[0007] The object of the present invention is to provide a disposable wearing article which can be completely torn along a tear guide line.

[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; (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 connects the two ends of the front piece and the back piece together; the pair of wing components have a fastening part, and the fastening part is constructed as follows: a first part and a second part; the second parts are opposite to each other, so that the first part and the front piece are connected The second part is detachably fastened to the one main surface of the front piece; the pair of second joining parts joins the first part of each of the wing parts to the front piece; the pair of tear guide lines extend between the upper and lower edges of the front piece; and are formed on the front piece to pass through between the second joining parts of each of the wing parts and the fastening parts; (i) the tear strength of the tear guide lines is lower than the tear strength of the front piece in the portion where the tear guide lines are not formed, and is lower than the tear strength of the second joining parts.

[0010] With the above structure, since the tear guide line is easier to tear than the second connecting part, when the part between a pair of tear guide lines of the front piece and the wing parts on either side are pulled in the direction of separation from each other, the wing parts will detach from the front piece, and the front piece can be completely torn along the tear guide line.

[0011] Preferably, the tearing strength of the tearing guide line is lower than the tearing strength of the first bonding portion.

[0012] At this time, since the tear guide line is easier to tear than the first joint, when the part between the pair of tear guide lines of the front piece and the back piece are pulled in the direction of separation from each other, the front piece and the back piece will be disengaged at the first joint, and the front piece can be completely torn along the tear guide line.

[0013] Preferably, when viewed from a direction perpendicular to the one main surface of the front panel, the first connecting portion and the second connecting portion overlap with each other.

[0014] 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.

[0015] Preferably, the tear guide line is a linear eyelet having a plurality of penetrating portions, which can penetrate between the one main surface and the other main surface of the front panel.

[0016] In this case, the tear guide line can be easily formed.

[0017] Preferably, the fastening portion is a hook component of a Velcro fastener.

[0018] 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.

[0019] In addition, the present invention also provides a method for manufacturing a disposable wearing article having the following structure.

[0020] 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 which parts to be a single piece are connected together, the parts to be a single piece include a front piece having first and second tear guide lines, a back piece, and a crotch part combined with the front piece and the back piece, and 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 conveyed in a state of being separated from each other; The step 2 is to combine 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 cut them into a predetermined shape to form the first and second wing parts respectively having the hook parts; Step 3, overlapping the first and second wing members with one main surface of the front piece connection part in the main body connection part, and then combining the first and second wing members with the front piece connection part in the main body connection part to form a second connection part; The step 4 is to overlap the other main surface of the back sheet connection part with the front sheet connection part in the main body connection part, and then combine the front sheet connection part and the back sheet connection part in the main body connection part to form a first connection part; The step 5 is to cut the main body connection portion to form a single piece, in which the pair of first joints joins the two ends of the front piece and the rear piece together, and the pair of second joints joins the front piece and the first and second wing members together; (a) in the step 1, after the first and second tear guide lines are formed, the tear strength of the first and second tear guide lines is lower than the tear strength of the front sheet connection portion in the portion where the first and second tear guide lines are not formed; (b) In the step 3, after the second joint portion is formed, the tear strength of the first and second tear guide lines is lower than the tear strength of the second joint portion.

[0021] In this case, a disposable wearing article can be manufactured which can be completely torn along the tear guide line.

[0022] Preferably, after the first bonding portion is formed, the tearing strength of the first and second tearing guide lines is lower than the tearing strength of the first bonding portion.

[0023] In this case, a disposable wearing article can be manufactured in which the front sheet and the back sheet will not be separated at the first joining portion, and the front sheet can be completely torn apart along the tear guide line.

[0024] Preferably, (a) after the first and second wing components are overlapped with one main surface of the front piece connecting part in the main body connecting part, in order to configure an adhesive coating part between the first and second wing components and the front piece connecting part in the main body connecting part, an adhesive is applied on the front piece connecting part in the main body connecting part, the substrate connecting part or the first and second wing components to form the adhesive coating part; (b) in the step 3, after the first and second wing components are overlapped with one main surface of the front piece connecting part in the main body connecting part via the adhesive coating part, they are temporarily fixed to form the second connecting part.

[0025] In this case, by temporarily fixing the first and second wing members, the conveying speed of the production line can be increased compared to the case where the adhesive application portion is not formed, and the number of products produced per unit time can be easily increased.

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

[0027] 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 which parts that become a single piece are connected together, and the parts that become a single piece include a front piece formed with first and second tear guide lines, a back piece, and a crotch part that is combined with the front piece and the back piece; and then convey 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 is to combine 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 cut them into a predetermined shape to form the wing parts before being divided in which the first and second wing parts each having the hook part are connected; Step 3, overlapping the main surface of one side of the wing member before the division with the front piece connection part in the main body connection part; and overlapping the back piece connection part in the main body connection part with the other main surface of the front piece connection part in the main body connection part; then, the wing member before the division and the overlapping front piece connection part and the back piece connection part in the main body connection part are combined together to form a first combined part that combines the front piece connection part and the back piece connection part in the main body connection part; and a second combined part that combines the wing member before the division with the front piece connection part in the main body connection part; The step 4 is to cut the wing parts and the main body connecting part which are connected to each other before being divided, so as to form the single piece; in the single piece, the pair of the first connecting parts connects the two ends of the front piece and the rear piece to each other, and the pair of the second connecting parts connects the front piece and the wing parts to each other; (a) 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 the front sheet connection portion in the portion where the first and second tear guide lines are not formed; (b) In the step 3, the second joint portion is formed so that the tear strength of the first and second tear guide lines is lower than the tear strength of the second joint portion.

[0028] In this case, a disposable wearing article that can be completely torn apart along the tearing guide line can be manufactured. The method can simultaneously form the first binding position that binds the front piece and the back piece together and the second binding position that binds the front piece and the wing member together, thereby simplifying the manufacturing process.

[0029] Preferably, the first connecting portion is formed so that the tearing strength of the first and second tearing guide lines is lower than the tearing strength of the first connecting portion.

[0030] In this case, a disposable wearing article can be manufactured in which the front sheet and the back sheet will not be separated at the first joining portion, and the front sheet can be completely torn apart along the tear guide line.

[0031] Preferably, (a) after the wing part before separation is overlapped with the one main surface of the front piece connection part in the main body connection part, in order to configure an adhesive coating part between the wing part before separation and the front piece connection part in the main body connection part, an adhesive is applied on the front piece connection part in the main body connection part, the substrate connection part or the wing part before separation to form the adhesive coating part; (b) in the step 3, after the wing part before separation is overlapped with the one main surface of the front piece connection part in the main body connection part via the adhesive coating part, it is temporarily fixed to form the first connecting part and the second connecting part.

[0032] In this case, by temporarily fixing the wing member before being divided, the conveying speed of the production line can be increased compared to the case where the adhesive application portion is not formed, and the number of products produced per unit time can be easily increased.

[0033] 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; the paired hook parts are spaced apart from each other in the conveying direction and combined with the substrate connecting part to form a hook connecting part; then, the hook connecting part is cut off between the adjacent pair of hook parts to form the wing part before division.

[0034] In this case, different devices can be used to effectively cut off the first and second hook connection parts and the base substrate connection part, which can easily improve production efficiency. In addition, the present invention can suppress the wear of the cutting blade used for cutting, thereby achieving effective use of the production line.

[0035] The invention provides a disposable wearing article which can be completely torn apart along a tearing guide line. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 (a) is a front view of a disposable wearing article embodiment 1 of the present invention; Figure 1 (b) is the back view. Figure 2 For Example 1, Figure 1 (a) is a cross-sectional view taken along line AA. Figure 3 This is a perspective view of the main parts of the disposable wearing article of Example 1. Figure 4 Schematic diagram of the manufacturing process of the disposable wearing article of Example 1. Figure 5(a) is a front view of the disposable wearing article of Example 2; Figure 5 (b) is the back view. Figure 6 Schematic diagram of the manufacturing process of the disposable wearing article of Example 2. Figure 7 For Example 2, Figure 5 (a) is a cross-sectional view taken along line BB. Figure 8 This is an enlarged view of the main parts of the disposable wearing article of the present invention. (Deformation 1) Fig. 9 Schematic diagram of the manufacturing process of the disposable wearing article of the present invention. (Variant 2) Fig.10 Schematic diagram of the manufacturing process of the disposable wearing article of the present invention. (Variant 2) Fig.11 Schematic diagram of the manufacturing process of the disposable wearing article of the present invention. (Variant 3) Fig.12 It is a stereoscopic view of the disposable wearing article of conventional embodiment 1. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] Example 1: Figure 1 to Figure 4 Referring to the figure, the disposable wearing article 10 of the present invention and the method for manufacturing the same will be described.

[0039] Figure 1 (a) is a front view of the disposable wearing article 10 of Example 1; Figure 1 (b) is the back 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.

[0040] like Figure 1 (a) Figure 1 (b) Figure 2 and Figure 3 As 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.

[0041] The front sheet 12 and the back sheet 14 may also be configured to be non-stretchable, for example, they may be configured to be stretchable by using a stretchable composite sheet formed by arranging elastic components between non-woven fabric sheets and combining the non-woven fabric sheets and the elastic components at appropriate locations. Figure 1 (a) and Figure 1 (b) or a further folded state is packaged and provided to consumers.

[0042] 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.

[0043] The first binding sites 20a, 20b, such as Figure 3 As shown, 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.

[0044] On the front panel 12, a pair of tear guide lines 24a, 24b are formed with a space between the first joint portions 20a, 20b, and a pair of wing members 18a, 18b are arranged so as to straddle the tear guide lines 24a, 24b.

[0045] The pair of wing members 18a, 18b have a first portion 18p at the root side and a second portion 18q at the front end side, and are arranged so that the second portions 18q face each other, and the first portion 18p and the front sheet 12 are connected to each other via second connection portions 22a, 22b. Figure 3 As shown, the second bonding portions 22a, 22b are formed by heat sealing, ultrasonic bonding or the like so as to extend continuously between the first bonding portions 20a, 20b and the tear guide lines 24a, 24b adjacent to each other.

[0046] The second part 18q of the wing parts 18a and 18b has a fastening part, which is configured to be fastened to one main surface 12s of the front sheet 12 in a detachable manner. For example, the fastening part is a hook part 19a and 19b of a Velcro tape, which is mounted on the second part 18q of the wing parts 18a and 18b in a manner opposite to one main surface 12s of the front sheet 12; as a result, the hook surface 19s of the hook part 19a and 19b is engaged with one main surface 12s of the front sheet 12, so that the hook part 19a and 19b can be fastened to one main surface 12s of the front sheet 12 in a detachable manner. The fastening part can be configured using components such as an adhesive sheet, a hook, and a button.

[0047] A pair of tear guide lines 24a, 24b are formed to extend between the upper edge 12p and the lower edge 12q of the front panel 12, and pass through between the second joint portions 22a, 22b of the wing members 18a, 18b and the hook members 19a, 19b, respectively.

[0048] The tear guide lines 24a, 24b are formed so that the tear strength of the tear guide lines 24a, 24b is lower than the tear strength of the front panel 12 in the portion 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, but is not torn in the portion where the tear guide lines 24a, 24b are not formed.

[0049] like Figure 3 As shown, the tear guide lines 24a, 24b are linear holes with a plurality of penetrating portions 24s, which penetrate between the main surface 12s on one side and the main surface 12t on the other side of the front panel 12. The tear guide lines 24a, 24b of the linear holes can be easily formed, and can also be formed by forming non-penetrating slits on the front panel 12 or removing part of the material of the front panel 12.

[0050] 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 between the pair of tear guide lines 24a, 24b of the front sheet 12 and any one of the wing members 18a, 18b are pulled in a direction away from each other, the wing members 18a, 18b will not be detached from the front sheet 12, but the front sheet 12 can be completely torn apart along the tear guide lines 24a, 24b.

[0051] 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 and the back sheet 14 will not be separated at the first joints 20a, 20b, but the front sheet 12 can be completely torn apart along the tear guide lines 24a, 24b.

[0052] Assume that the tear strength of the tear guide lines 24a and 24b is F fThe tear strength of the front sheet in the portion where the tear guide lines 24a and 24b are not formed is F0, the tear strength of the first connecting portion 20a and 20b is F1, and the tear strength of the second connecting portion 22a and 22b is F2. The structure satisfies the following formulas 1 and 2, and is preferably structured to satisfy formula 3. F f <F 0 (Formula 1) F f <F2(Formula 2) F f <F1(Formula 3)

[0053] The tear strength was measured in accordance with JIS L 1096C method (trapezoidal method).

[0054] 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.

[0055] 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 is shown in Table 1 below. [Table 1] W(mm) D(mm) <![CDATA[F 0(N)]]> 2.5 1.0 3.38 3.5 1.0 3.52 2.5 5.O 5.61

[0056] The tear strength of the front panel in the portion 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, and a tear test is performed under specified conditions while the sample is clamped by a fixed side clamp and a movable side clamp of a test device. The maximum strength displayed during tearing is measured and expressed as an average value of three measurements.

[0057] The tearing strength of the first joint 20a, 20b is measured in the following manner: a sample of a specified size is prepared with a front piece 12 and a rear piece 14 arranged on both sides so that the first joint 20a, 20b is located in the center of the long side direction of the sample; 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, and the rear piece 14 of the sample is clamped by the other; in this state, a tearing test is carried out under the specified conditions, and the maximum strength displayed during tearing is measured, and expressed as the average value of three measurements.

[0058] The tearing strength of the second joint 22a, 22b is measured in the following manner: a sample of specified dimensions is prepared with the front panel 12 and the wing parts 18a, 18b arranged on both sides so that the second joints 20a, 20b are located in the center of the long side direction of the sample; then, the second joints 22a, 22b are arranged between the fixed side clamp and the movable side clamp of the test device; the front panel 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 under specified conditions, and the maximum strength displayed during tearing is measured and expressed as an average value of three measurements.

[0059] 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

[0060] like Figure 4 As shown, the manufacturing method of the disposable wearing article 10 of the present invention will be described below.

[0061] The method for manufacturing the disposable wearing article 10 includes the following steps 1 to 5.

[0062] (i) Step 1: forming a main body connecting portion 11, in which a portion 11k that will become a single piece is connected together; the portion 11k that will become a single piece includes a front piece 12 formed with first and second tear guide lines 24a, 24b, 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 in which a front piece connecting portion 12k connected to the portion that will become the front piece 12 and a back piece connecting portion 14k connected to the portion that will become the back piece 14 are separated from each other.

[0063] The main body connection part 11 can be formed by a well-known method, for example, a plurality of elastic members 12i, 14i are arranged between sheets such as nonwoven fabrics in the front sheet connection part 12k and the back sheet connection part 14k, and the sheets such as nonwoven fabrics and the elastic members 12i, 14i are combined with each other at appropriate positions, and then the elastic members 12i, 14i are transmitted in a stretched state. An absorbent 18 for absorbing and retaining liquids such as menstrual blood and / or urine may be pre-arranged on the main body connection part 11, or it may not be arranged.

[0064] (ii) Step 2: In addition, while conveying the substrate 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 with each other and cut into a specified shape to form the first and second wing parts 18a, 18b respectively having the hook parts 19a, 19b.

[0065] The first and second wing members 18a and 18b may be formed in various forms.

[0066] 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.

[0067] Then, on the base material connection part 30, the first and second hook connection parts 32 and 34 are joined together with a space between them along a pair of side edges 30m and 30n of the base material connection part 30, thereby forming the first connection part 30a. At this time, the first and second hook connection parts 32 and 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.

[0068] 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, which has hook parts 19a and 19b formed by cutting off the first and second hook connecting portions 32 and 34.

[0069] Next, the second connection portion 30b is divided between the opposing hook members 19a and 19b to form a pair of third connection portions 31a and 31b having outer edges 31m and 31n formed by the division.

[0070] Then, a pair of third connecting parts 31a, 31b are cut off at the specified position 31x indicated by the dotted line to form the first and second wing parts 18a, 18b having hook parts 19a, 19b. After the first and second wing parts 18a, 18b are paired, the orientation relative to the conveying direction is changed as shown by the arrow 31u.

[0071] In addition, as shown in a second modification described later, the first and second wing members 18a and 18b may be formed without changing their orientations with respect to the conveying direction.

[0072] (iii) Step 3: Overlap the first and second wing members 18a, 18b with one main surface 12s of the front piece connection portion 12k in the main body connection portion 11; then, combine the first and second wing members 18a, 18b with the front piece connection portion 12k in the main body connection portion 11 to form second connection portions 22a, 22b.

[0073] At this time, between the second joint portions 22a, 22b of each of the pair of wing members 18a, 18b and the wing members 19a, 19b, any one of the first and second tear guide lines 24a, 24b is arranged so that the wing members 18a, 18b cross any one of the first and second tear guide lines 24a, 24b. The second joint portions 22a, 22b are formed by heat sealing, ultrasonic bonding, or the like.

[0074] (Iv) Step 4: As shown by arrow 11x, the main connecting portion 11 is folded back, and the rear piece connecting portion 14k in the main connecting portion 11 is overlapped with the other side main surface 12t of the front piece connecting portion 12k in the main connecting portion 11; then, the front piece connecting portion 12k and the rear piece connecting portion 14k in the main connecting portion 11 are combined together to form the first combining portion 20a, 20b.

[0075] The first combining 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 front piece connecting part 12k and the rear piece connecting part 14k can also be combined with each other so that the first combining parts 20a, 20b are connected and cross the boundary line of the single-piece part 11k.

[0076] (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 front piece 12 and the first and second wing parts 18a, 18b together.

[0077] In step 1 of (i), the first and second tear guide lines 24a, 24b are formed so that the tear strength of the first and second tear guide lines 24a, 24b is lower than the tear strength of the front panel connection portion 12k in the portion where the first and second tear guide lines 24a, 24b are not formed.

[0078] Furthermore, in the step (iii) 3, the second joint portions 22a and 22b are formed so that the tear strength of the first and second tear guide lines 24a and 24b is lower than the tear strength of the second joint portions 22a and 22b.

[0079] Thus, the present invention can continuously and efficiently manufacture disposable wearing articles 10 that can be completely torn along the tear guide lines 24a, 24b.

[0080] 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.

[0081] In the step (iv) 4, the first connecting parts 20a and 20b may be formed so that the tear strength of the first and second tear guide lines 24a and 24b is lower than the tear strength of the first connecting parts 20a and 20b.

[0082] In this case, a disposable wearing article 10 can be manufactured in which the front sheet 12 and the back sheet 14 will not be separated at the first joining portions 20a, 20b, but the front sheet 12 can be completely torn apart along the tear guide lines 24a, 24b.

[0083] In the step (iii) 3, the first and second wing members 18a and 18b may be temporarily fixed after being overlapped with one main surface 12s of the front sheet connecting portion 12k in the main body connecting portion 11.

[0084] In this case, (a) after the first and second wing parts 18a, 18b are overlapped with one main surface 12s of the front piece connection part 12k in the main body connection part 11, in order to arrange adhesive coating parts 36a, 36b between the first and second wing parts 18a, 18b and the front piece connection part 12k in the main body connection part 11, adhesive is applied on the front piece connection part 12k in the main body connection part 11, the substrate connection part 30 or the first and second wing parts 18a, 18b to form the adhesive coating parts 36a, 36b; (b) in the step 3, after the first and second wing parts 18a, 18b are overlapped with one main surface 12s of the front piece connection part 12k in the main body connection part 11 via the adhesive coating parts 36a, 36b, they are temporarily fixed to form the second connecting parts 22a, 22b.

[0085] For example, Figure 4 As shown, on the main surface of a pair of third connecting parts 31a, 31b on the same side as the first and second hook parts 19a, 19b, an adhesive such as hot melt adhesive is applied along the outer edges 31m, 31n to form adhesive coating parts 36a, 36b; in order to configure tear guide lines 24a, 24b between the adhesive coating parts 36a, 36b and the hook parts 19a, 19b, the first and second wing parts 18a, 18b are temporarily fixed after being overlapped with the main surface 12s of one side of the front piece connecting part 12k in the main body connecting part 11.

[0086] Alternatively, an adhesive such as hot melt adhesive may be applied to appropriate portions of the front piece connection portion 12k, the substrate connection portion 30, the first connection portion 30a, the second connection portion 30b, or the pair of wing parts 18a, 18b after being cut in the main body connection portion 11 to form adhesive application portions 36a, 36b to replace the pair of third connection portions 31a, 31b.

[0087] 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 temporary fixing is not performed, and the number of products produced per unit time can be easily increased.

[0088] Example 2: Figure 5 to Figure 7 As shown, when observing from the direction perpendicular to the main surface 12s of the front piece 12, the disposable wearing article 10 and the manufacturing method thereof of the embodiment 2 in which the first binding part 20p, 20q overlaps with the second binding part 22p, 22q are described. The construction of the embodiment 2 is basically the same as that of the embodiment 1. The same symbols as those of the embodiment 1 will be used for the components identical to the embodiment 1 below, and the differences from the embodiment 1 will be described as the center.

[0089] Figure 5 (a) is a front view of a disposable wearing article 10a of Example 2; Figure 5 (b) is the back view. Figure 7 It is along Figure 5 (a) is a cross-sectional view taken along line BB.

[0090] like Figure 5 (a) Figure 5 (b) and Figure 7 As shown, the disposable wearing article 10a of the second embodiment is the same as the first embodiment, and the wing members 18a and 18b are attached to the front panel 12 so as to cross the tear guide lines 24a and 24b formed on the front panel 12.

[0091] When viewed from a direction perpendicular to the main surface 12s of the front sheet 12, the first joints 20p and 20q that join the front sheet 12 and the rear sheet 14 together overlap with the second joints 22p and 22q that join the wing members 18a and 18b to the front sheet 12. Since the first joints 20p and 20q overlap with the second joints 22p and 22q, the first joints 20p and 20q and the second joints 22p and 22q can be formed at the same time.

[0092] Figure 6 Schematic diagram of the manufacturing process of the disposable wearing article 10a. Figure 6 As shown, a method for manufacturing the disposable wearing article 10a will be described below.

[0093] The method for producing the disposable wearing article 10a includes the following steps 1 to 4.

[0094] like Figure 6 As shown, (i) Step 1: forming the main body connecting portion 11 and conveying it in the direction indicated by the arrow. Specifically, forming the main body connecting portion 11, in the main body connecting portion 11, connecting together the portion 11k to be a single piece, the portion 11k to be a single piece including the front piece 12 formed with the first and second tear guide lines 24a, 24b, the back piece 14, and the crotch portion 16 combined with the front piece 12 and the back piece 14; then, conveying is performed in a state where the front piece connecting portion 12k connected to the portion of the front piece 12 and the back piece connecting portion 14k connected to the portion of the back piece 14 are separated from each other.

[0095] Step 2: Using the substrate connecting portion 30 and the hook connecting portion 35 to form the wing component 18c before segmentation; that is, while conveying the substrate connecting portion 30 for forming the first and second wing components 18a, 18b and the hook connecting portions 32, 34 for forming the hook components 19a, 19b, they are combined together and cut into a specified shape to form the wing component 18c before segmentation; in the wing component 18c before segmentation, the first and second wing components 18a, 18b having the hook components 19a, 19b, respectively, are connected together.

[0096] In detail, the base connecting portion 30 and the hook connecting portion 35 are transported in the direction indicated by the arrow.

[0097] A slit is formed at the middle position in the width direction of the hook connecting portion 35 using the slitting device 80; then, the first and second hook connecting portions 32 and 34 are formed.

[0098] Next, the first and second hook connecting portions 32 and 34 are cut into predetermined lengths using the cutting slide 82, and then the paired hook members 19a and 19b are sequentially formed, and the paired hook members 19a and 19b are bonded to one main surface 30s of the base material connecting portion 30 with a gap in the conveying direction, thereby forming the wing connecting portion 31. At this time, the surfaces of the hook members 19a and 19b on the opposite side to the hook surface are 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 19a and 19b, for example, an adhesive is applied to predetermined positions of the base material connecting portion 30 and / or the hook members 19a and 19b.

[0099] Next, the pin embossing device 84 is used to strengthen the bonding between the base material connecting portion 30 of the flap connecting portion 31 and the hook members 19a, 19b.

[0100] The wing connecting portion 31 is cut at a predetermined position between the hook members 19a and 19b adjacent to each other in the conveying direction by the cutting and turning device 88 to form the wing member 18c before being divided. Then, the wing member 18c before being divided is conveyed while being rotated 90 degrees relative to the conveying direction. The cutting and turning device 88 conveys the wing connecting portion 31 while supporting the other main surface of the base material connecting portion 30.

[0101] The wing member 18c before segmentation may also be formed by other methods. Figure 1The same as the embodiment 1 shown, the base material connecting part 30, the first and second hook connecting parts 32, 34 are combined and processed to form the second connecting part 30b having the hook parts 19a, 19b; then, unlike the embodiment 1, the second connecting part 30b is not divided into a pair of third connecting parts 31a, 31b, but the second connecting part 30b is cut at a specified position to form the wing part 18c before division, and then the direction of the wing part 18c before division is changed; the wing part 18c before division has the first and second hook parts 19a, 19b facing each other, and the first parts 18p of the first and second wing parts 18a, 18b are connected to each other.

[0102] In this case, when forming the wing member 18c before division, the first and second hook connection portions 32 and 34 of the second connection portion 30b are cut simultaneously with the base material connection portion 30, so the blade used for cutting is easily worn.

[0103] like Figure 6 As shown, if the first and second hook connection parts 32, 34 and the base material connection part 30 of the hook connection part 31 are cut by using respective devices 82, 88, it is possible to cut efficiently compared to the case where both are cut at the same time, and it is easier to increase the conveying speed and improve the production efficiency. In addition, the present invention can suppress the wear of the cutting blade used for cutting, and realize the efficient use of the production line.

[0104] Step 3: Overlap the wing member 18c before the splitting with one main surface 12s of the front piece connection part 12k in the main body connection part 11, and overlap the back piece connection part 14k in the main body connection part 11 with the other main surface 12t of the front piece connection part 12k in the main body connection part 11; then, the wing member 18c before the splitting and the front piece connection part 12k and the back piece connection part 14k in the main body connection part 11 that overlap with each other are combined to form the first combined parts 20p and 20q that combine the front piece connection part 12k and the back piece connection part 14k in the main body connection part 11; and the second combined parts 22p and 22q that combine the wing member 18c before the splitting with the front piece connection part 12k in the main body connection part 11.

[0105] At this time, in order to make the boundary line 18k between the opposite pair of first and second hook parts 19a, 19b of the wing part 18c before division coincide with the boundary line of the part 11k that becomes a single piece in the main connecting part 11, the wing part 18c before division is overlapped with a main surface 12s of the front piece connecting part 12k in the main connecting part 11; then, a pair of first and second tear guide lines 24a, 24b formed on the front piece connecting part 12k in the main connecting part 11 are set between the hook parts 19a, 19b of the wing part 18c before division.

[0106] In process 3, sub-process 1 of overlapping the wing part 18c before division with the main surface 12s of one side of the front piece connection part 12k in the main body connection part 11 can be performed before sub-process 2 of overlapping the rear piece connection part 14k in the main body connection part 11 with the main surface 12t of the other side of the front piece connection part 12k in the main body connection part 11, or can be performed after sub-process 2 or simultaneously with sub-process 2.

[0107] Step 4: Cut off the wing parts 18c and the main body connecting part 11 before being divided, so as to form the single piece; in the single piece, a pair of the first connecting parts 20p, 20q connect 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 connecting parts 22p, 22q connect the front piece 12 and the wing parts 18a, 18b together.

[0108] In step 1 of (i), the first and second tear guide lines 24a, 24b are formed so that the tear strength of the first and second tear guide lines 24a, 24b is lower than the tear strength of the front panel connection portion 12k in the portion where the first and second tear guide lines 24a, 24b are not formed.

[0109] In the step (iii) 3, the second joint portions 22p and 22q are formed so that the tear strength of the first and second tear guide lines 24a and 24b is lower than the tear strength of the second joint portions 22p and 22q.

[0110] As a result, disposable wearing articles 10 that can be completely torn apart along tear guide lines 24a, 24b can be manufactured continuously and efficiently; the first joint portions 20p, 20q that join the front panel 12 and the back panel 14 together and the second joint portions 22p, 22q that join the front panel 12 and the wing parts 18a, 18b together can be formed simultaneously, thereby simplifying the manufacturing process.

[0111] In the step (iii) 3, the first connecting parts 20p and 20q may be formed so that the tear strength of the first and second tear guide lines 24a and 24b is lower than the tear strength of the first connecting parts 20p and 20q.

[0112] In this case, a disposable wearing article 10a can be manufactured in which the front sheet 12 and the back sheet 14 will not be separated at the first joining portions 20p and 20q, and the front sheet 12 can be completely torn apart along the tear guide lines 24a and 24b.

[0113] In the step (iii) 3, the wing members 18a and 18b before being divided may be overlapped with one main surface 12s of the front sheet connection part 12k in the main body connection portion 11 to be temporarily fixed.

[0114] In this case, (a) after the wing part 18c before division is overlapped with the one side main surface 12s of the front piece connection part 12k in the main body connection part 11, in order to configure an adhesive coating part between the wing part 18c before division and the front piece connection part 12k in the main body connection part 11, adhesive is applied to the front piece connection part 12k in the main body connection part 11, the substrate connection part 30 or the wing part 18c before division to form the adhesive coating part; (b) in the step 3, after the wing part 18c before division is overlapped with the one side main surface 12s of the front piece connection part 12k in the main body connection part 11 via the adhesive coating part, they are temporarily fixed to form the second connecting part 22a, 22b.

[0115] By temporarily fixing the wing member 18c before being divided, the conveying speed of the production line can be increased compared to the case where the temporary fixing is not performed, and the number of products produced per unit time can be easily increased.

[0116] Deformation method 1: Figure 8 This is an enlarged view of the main parts of the disposable wearing article in the modification mode 1. Figure 8 As shown, a plurality of elastic components 13 such as rubber threads are arranged on the front sheet 12; in the linear eyelets constituting the tear guide line 24, the elastic component 13x intersecting the penetration portion 24s between the main surfaces 12s and 12t of the front sheet 12 will be cut when the penetration portion 24s is formed, but the elastic components 13a and 13b intersecting the non-penetration portion 24x between the adjacent penetration portions 24s will not be cut. These elastic components 13a and 13b that are not cut will not be cut even if the front sheet 12 is torn along the tear guide line 24, and need to be torn off when wearing the disposable wearing article.

[0117] In order to prevent the uncut elastic members 13 a and 13 b from remaining, an auxiliary cutting line 25 is provided in the vicinity of the tearing guide line 24 .

[0118] The auxiliary cutting line 25 is formed with a pitch smaller than the linear perforations of the tear guide line 24, so that the front sheet 12 is torn along the tear guide line 24 rather than along the auxiliary cutting line 25. For example, the elastic component 13 is cut in the vicinity of the tear guide line 24 using a cutter whose blade pitch is set to be smaller than the linear perforations of the tear guide line 24, and at this time, it should be ensured that the nonwoven fabric of the front sheet 12 is not cut.

[0119] To form the auxiliary cutting line 25, the same anvil as that used to form the linear eyelet of the tear guide line 24 may be used, or other devices may be used.

[0120] The auxiliary cutting line 25 may also be formed by fusing the elastic member 13 or the like.

[0121] An auxiliary cutting line 25 can be used to cut off at least the elastic parts 13a and 13b that would not be cut off 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, at the same time as forming the tear guide lines 24a and 24b, or after forming the tear guide lines 24a and 24b.

[0122] Deformation method 2: Fig. 9 and Fig.10 As shown, the manufacturing method of the disposable wearing article according to the second modification will be described below. Fig. 9 and Fig.10 In the second modification, the wing members 18a, 18b formed by the base material connecting parts 30i, 30j and the hook connecting parts 32, 34 can be overlapped with one main surface 12s of the front sheet connecting part 12k in the main body connecting part 11 without changing the orientation relative to the conveying direction.

[0123] like Fig. 9 As shown, the substrate connecting parts 30i, 30j for forming the wing parts 18a, 18b and the first and second hook connecting parts 32, 34 for forming the hook parts 19a, 19b are conveyed in respective continuous directions, and the first and second hook connecting parts 32, 34 are cut off at a specified width to form unprocessed hook parts 32k, 34k.

[0124] Set intervals and arrange the unprocessed hook parts 32k, 34k on the substrate connecting parts 30i, 30j at a specified interval; then, combine the unprocessed hook parts 32k, 34k with the substrate connecting parts 30i, 30j by bonding, heat sealing, ultrasonic bonding, etc. to form a pair of first connecting parts 37a, 37b.

[0125] Next, an adhesive such as hot melt adhesive is applied to predetermined positions of the pair of first connecting portions 37a and 37b to form a pair of second connecting portions 37u and 37v, on which adhesive application areas 36a and 36b are formed. At this time, the adhesive application areas 36a and 36b are spaced apart from the unprocessed hook members 32k and 34k and are arranged on the same surface of the base connecting portions 30i and 30j.

[0126] Then, the trimming portions 37p, 37q of the prescribed shape indicated by the dotted lines are cut away to form the wing members 18a, 18b having the hook members 19a, 19b formed by cutting the unprocessed hook members 32k, 34k and the adhesive application portions 36a, 36b.

[0127] Then, the wing members 18a and 18b are paired and arranged at a predetermined interval.

[0128] While the process so far is in progress, Fig.10 As shown, similarly to the first and second embodiments, the main body connection portion 11 is conveyed in a direction in which the single-piece portion 11k is continuous while the front sheet connection portion 12k and the rear sheet connection portion 14k are separated from each other.

[0129] Next, the pair of wing parts 18a, 18b are overlapped with the main surface 12s of one side of the front piece connecting part 12k in the main body connecting part 11, so that the hook parts 19a, 19b and the adhesive coating parts 36a, 36b of the wing parts 18a, 18b face the main surface of one side of the front piece connecting part 12k in the main body connecting part 11, and the pair of wing parts 18a, 18b are temporarily fixed on the main surface 12s of one side of the front piece connecting part 12k in the main body connecting part 11 via the adhesive coating parts 36a, 36b.

[0130] At this time, a pair of wing parts 18a, 18b are arranged on both sides of the boundary line of the part 11k that becomes a single piece in the main connecting part 11; and any one of a pair of tear guide lines 24a, 24b is arranged between the hook parts 19a, 19b of each of the pair of wing parts 18a, 18b and the adhesive coating parts 36a, 36b.

[0131] Then, a pair of wing parts 18a, 18b temporarily fixed on the front piece connecting part 12k in the main body connecting part 11 are combined with the front piece connecting part 12k in the main body connecting part 11 by heat sealing, ultrasonic bonding or the like to form the second connecting parts 22a, 22b.

[0132] Then, as shown by arrow 11 x , the main body connecting portion 11 is folded back, and the rear sheet connecting portion 14 k in the main body connecting portion 11 is overlapped with the other main surface 12 t of the front sheet connecting portion 12 k in the main body connecting portion 11 .

[0133] Then, by heat sealing, ultrasonic bonding or the like, the overlapping front sheet connection portion 12k and the rear sheet connection portion 14k in the main connecting portion 11 are bonded together at a specified position between a pair of wing members 18a, 18b to form the first bonding portion 20a, 20b.

[0134] Next, the main body connection portion 11 is cut at a cutting position 10x indicated by a dashed line to form a single piece.

[0135] It is also possible to not form the adhesive coating parts 36a, 36b, but to overlap the main surface 12s of one side of the wing parts 18a, 18b and the front piece connecting part 12k 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 front piece connecting part 12k in the main body connecting part 11 together.

[0136] Alternatively, the wing members 18a and 18b may be arranged on the front sheet connecting portion 12k in the main body connecting portion 11 and then immediately fixed, instead of being temporarily fixed.

[0137] In addition, instead of forming a pair of the wing parts 18a and 18b, the wing parts 18a and 18b can be overlapped with one side main surface 12s of the front piece connecting part 12k in the main body connecting part 11, and then the wing parts 18a and 18b and the front piece connecting part 12k in the main body connecting part 11 are combined with each other.

[0138] Deformation method 3: Fig.11 As shown, the manufacturing process of the disposable wearing article according to the third modification will be described below. Fig.11 In the third 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.

[0139] like Fig.11As 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.

[0140] 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.

[0141] 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 having either the first and second hook members 19a and 19b.

[0142] 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 the side of one side edge 30m of the base connecting portion 30 and a portion on the side of 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.

[0143] Although not shown, an adhesive such as hot melt adhesive may be applied to the base material connection portion 30, the first connection portion 30c, the first and second wing parts 18a and 18b at an appropriate time as needed to form an adhesive application portion on one main surface 12s of the front piece connection portion 12k in the main body connection portion 11 for temporary fixation.

[0144] Modification 4: The wing members 18a and 18b formed by the base material connection part and the hook connection part may not be paired, but may be arranged on one main surface 12s of the front sheet connection part 12k in the main body connection part 11 at appropriate timing.

[0145] As described above, the present invention can provide a disposable wearing article in which the front panel can be completely torn apart along the tear guide line, wrapped around the legs after being torn apart, and refastened using the wing parts.

[0146] The present invention is not limited to the above-described embodiments, and may be implemented by various modifications.

[0147] For example, one or more of the modifications 1 to 4 may be appropriately combined with the first embodiment or the second embodiment.

[0148] Reference Numbers 10, 10a: Disposable wearing articles 11: Main connecting part 11k: Becoming a monolithic part 12: Front piece 12a, 12b: Both ends 12p: Top edge 12q: Lower edge 12s: One main surface 12t: The other main surface 12k: Front piece connection 14: Back 14a, 14b: Both ends 14k: Rear plate connection 16: Crotch 18a, 18b: Wing parts 18c: Wing parts before segmentation 18p: Part 1 18q: Part 2 19A, 19b: Hook component (fastening part) 20a, 20b, 20p, 20q: 1st binding site 20a, 22b, 22p, 22q: Second binding site 24, 24A, 24b: Tear off guide line (linear eyelet) 24s: Run-through 30, 30i, 30j: Substrate connection part 32, 33, 34, 35: Hook connection part 36a, 36b: Adhesive application area

Claims

1. A disposable wearing article, comprising: 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 pair of first joining portions combine the two ends of the front piece and the back piece together; the pair of wing components have a fastening portion; the fastening portion is constructed as follows: a first part and a second part; the second parts are opposite to each other, so that the first part is adjacent to one of the two ends of the front piece , arranged along the main surface of the front piece on the opposite side to the back 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 and the front piece to each other; the pair of tear guide lines extend between the upper edge and the lower edge of the front piece, and are formed on the front piece to pass through the second connecting parts of each of the wing parts and the fastening parts; the tear strength of the tear guide lines is lower than the tear strength of the front piece in the part where the tear guide lines are not formed, and is lower than the tear strength of the second connecting parts.

2. The disposable wearing article according to claim 1, characterized in that: The tearing strength of the tearing guide line is lower than the tearing strength of the first bonding portion.

3. The disposable wearing article according to claim 1 or 2, characterized in that: When viewed from a direction perpendicular to the one main surface of the front panel, the first connecting portion and the second connecting portion overlap each other.

4. The disposable wearing article according to any one of claims 1 to 3, characterized in that: The tear guide line is a linear eyelet having a plurality of penetrating portions, and penetrates between the one main surface and the other main surface of the front panel.

5. The disposable wearing article according to claims 1 to 4, characterized in that: The fastening part is the hook part of the Velcro.

6. A method for manufacturing a disposable wearing article, comprising: Process 1, process 2, process 3, process 4, process 5; wherein, The process 1 is to form a main body connection part, in which parts that become a single piece are connected together; the parts that become a single piece include a front piece formed with first and second tear guide lines, a back piece, and a crotch portion combined with the front piece and the back piece; then, convey 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 portion for forming the first and second wing members and the hook connection portion 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 front piece connection part in the main body connection part, and then combining the first and second wing members with the front piece connection part in the main body connection part to form a second connection part; Step 4: overlapping the other main surface of the front piece connection part of the rear piece connection part with the main body connection part; then, combining the overlapping front piece connection part and the rear piece connection part of 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 front piece and the first and second wing members together; 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 the front sheet connection portion in the portion where the first and second tear guide lines are not formed; In the step 3, the second joint portion is formed so that the tear strength of the first and second tear guide lines is lower than the tear strength of the second joint portion.

7. The method for manufacturing a disposable wearing article according to claim 6, wherein: The first joint portion is formed so that the tearing strength of the first and second tearing guide lines is lower than the tearing strength of the first joint portion.

8. The method for manufacturing a disposable wearing article according to claim 6 or 7, characterized in that: After the first and second wing parts are overlapped with the one main surface of the front piece connecting part in the main body connecting part, in order to configure an adhesive coating part between the first and second wing parts and the front piece connecting part in the main body connecting part; adhesive is applied on the front piece connecting part in the main body connecting part, the substrate connecting part or the first and second wing parts to form the adhesive coating part; in the step 3, the first and second wing parts are overlapped with the one main surface of the front piece connecting part in the main body connecting part via the adhesive coating part, and then temporarily fixed to form the second connecting part.

9. A method for manufacturing a disposable wearing article, comprising: 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, and 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 then conveyed; The step 2 is to combine 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 cut them into a predetermined shape to form the wing members before being divided in which the first and second wing members each having the hook member are connected; Step 3: overlap the main surface of one side of the wing member before the division with the front piece connection part in the main body connection part, and overlap the back piece connection part in the main body connection part with the other main surface of the front 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 back piece connection part in the main body connection part to form a first connection part that combines the front piece connection part and the back piece connection part in the main body connection part; and a second connection part that combines the wing member before the division with the front piece connection part in the main body connection part; Step 4: cutting the wing member and the main body connecting portion that are bonded together before being divided to form the single piece; in the single piece, a pair of the first bonding portions bond the two ends of the front piece and the rear piece together, and a pair of the second bonding portions bond the front piece and the wing member together; 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 the front sheet connection portion in the portion where the first and second tear guide lines are not formed; In the step 3, the second joint portion is formed so that the tear strength of the first and second tear guide lines is lower than the tear strength of the second joint portion.

10. The method for manufacturing a disposable wearing article according to claim 9, wherein: The first joint portion is formed so that the tearing strength of the first and second tearing guide lines is lower than the tearing strength of the first joint portion.

11. The method for manufacturing a disposable wearing article according to claim 9 or 10, characterized in that: After the wing part before division is overlapped with the one main surface of the front 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 front piece connection part in the main body connection part; adhesive is coated on the front 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, the wing part before division is overlapped with the one main surface of the front piece connection part in the main body connection part via the adhesive coating part, and then temporarily fixed to form the first connecting part and the second connecting part.

12. The method for manufacturing a disposable wearing article according to claim 9 or 10, characterized in that: 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 the 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 substrate connecting part; then, the hook connecting part is cut off between the adjacent pair of hook parts to form the wing part before division.

Images