Absorbent article and manufacturing method thereof, and production system for manufacturing absorbent articles

Abstract

The present application provides an absorbent article, a manufacturing method thereof, and a production system for manufacturing an absorbent article. In the manufacturing method of the absorbent article according to the present application, the cuts on the sensing layer and the leak-proof back sheet are controlled based on the in-position signal of the same cut mark, so that the orthogonal projection of the sensing strip on the leak-proof back sheet intersects with the accommodation groove for accommodating the data reader. When the absorbent article thus obtained is used, the absorbed liquid such as urine can penetrate through the top sheet and into the absorbent body, and in this process, one end of the sensing strip that contacts the absorbent body is made conductive by the absorbed liquid in this portion, and the data reader can obtain the conductivity data of the sensing strip and issue a replacement alert, and the absorbent article can be replaced in a timely manner based on the replacement alert. In addition, in the manufacturing method of the absorbent article, it is not necessary to separately form the attachment position of the data reader according to the position of the sensing strip, and production efficiency can be effectively improved.

Description

[Technical field]

[0001] The present application relates to the technical field of absorbent articles, and more particularly to an absorbent article and a manufacturing method thereof, and a production system for manufacturing the absorbent article. [Background technology]

[0002] Examples of absorbent articles include disposable diapers, sanitary napkins, incontinence products, etc. Disposable diapers usually include a surface coating layer, an absorbent layer, and a base fabric. The surface coating layer adheres closely to the body of an infant, thereby promoting rapid penetration of urine and effectively preventing wetback, thereby keeping the top sheet of the disposable diaper dry.

[0003] As living standards improve, people's needs for disposable absorbent articles are no longer satisfied with just urine absorption function, but are beginning to become multifunctional, leading to the appearance of various smart disposable diapers on the market.

[0004] However, in the conventional smart disposable diaper production process, after completing the manufacture of the main body part of the smart disposable diaper, it is necessary to form the mounting position of the data reader based on the position of the sensing layer of the main body part of the smart disposable diaper, which results in low production efficiency of the smart disposable diaper. Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the technical problem to be solved by the present application is to provide an absorbent article and a manufacturing method thereof that can improve the production efficiency of smart disposable diapers, and a production system for manufacturing absorbent articles. [Means for solving the problem]

[0006] In order to solve the above problems, the present application provides: A step of feeding and conveying a top sheet and a leak-proof back sheet along a longitudinal direction, the top sheet and the leak-proof back sheet being disposed opposite each other with a space therebetween, and an absorbent body having a predetermined dimension being disposed between the top sheet and the leak-proof back sheet; providing and conveying a sensing layer located on one side of the topsheet; obtaining an in-position signal of a cut mark on the leak-proof backsheet, and controlling a cut on the sensing layer based on the in-position signal of the cut mark to obtain a sensing strip having a predetermined length; Adhering the cut sensing strip to a side of the topsheet facing the absorbent body; controlling a cut on the leakproof backsheet based on the in-position signal of the cut mark to form a receiving groove at a predetermined portion of the leakproof backsheet, the receiving groove being for receiving a data reader, and an orthogonal projection of the sensing strip onto the leakproof backsheet intersecting with the receiving groove; and sequentially adhering the top sheet, the absorbent body and the leak-proof back sheet so that one end of the sensing strip is connectable to the data reader in the accommodation groove and the other end is contactable with the absorbent body.

[0007] Optionally, the step of controlling a cut on the sensing layer based on the cut mark in-position signal to obtain a sensing strip having a predetermined length can be specifically: setting a duration for continuously cutting the sensing layer based on the cut mark in-position signal, The duration of successively cutting the sensing layer includes steps that are positively correlated with the predetermined length.

[0008] Optionally, a time interval between a start time of cutting the sensing layer and a start time of cutting the leakproof backsheet is set based on a position of the sensing strip along the longitudinal direction relative to the receiving groove.

[0009] Optionally, the sensing layer is cut at a predetermined speed based on the transport speed of the sensing layer.

[0010] Optionally, said leakproof backsheet is provided with a plurality of said cut marks spaced apart along said longitudinal direction.

[0011] Optionally, the step of adhering the cut sensing strip to the side of the top sheet facing the absorbent body specifically includes: adsorbing the cut sensing strip to a first cutter roll that cuts the sensing strip; and controlling and rotating the first cutter roll so as to transfer the adsorbed sensing strip to the side of the top sheet facing the absorbent body.

[0012] Optionally, the step of controlling the cutting of the leak-proof backsheet based on the cut mark in-position signal specifically includes: The method includes a step of cutting the leak-proof backsheet, sucking the cut scrap into a hollow cavity of a second cutter roll that cuts the leak-proof backsheet, and discharging the cut scrap through the hollow cavity of the second cutter roll.

[0013] Optionally, the manufacturing process of the absorbent body includes: feeding and conveying an absorbent layer along a machine direction; controlling a cut on the absorbent layer based on the cut mark in-position signal to obtain the absorbent having a predetermined dimension; and adhering the absorbent body to a side of the leak-proof backsheet facing the topsheet such that an orthogonal projection of the absorbent body onto the leak-proof backsheet and the containment groove are offset from each other.

[0014] The present application provides a production system for manufacturing absorbent articles, the production system including a controller in which a computer program is stored, the production system implementing the steps of the above-mentioned manufacturing method when the controller executes the computer program.

[0015] The present application, A top sheet provided along the longitudinal direction; a sensing strip having a predetermined length along the longitudinal direction and attached to one side of the top sheet; a leak-proof backsheet provided on the side of the topsheet to which the sensing strip is adhered, the leak-proof backsheet having a receiving groove formed in a predetermined portion thereof for receiving a data reader, and an orthogonal projection of the sensing strip onto the leak-proof backsheet intersects with the receiving groove; an absorbent body disposed between the topsheet and the leak-resistant backsheet, The sensing strip has one end connectable to the data reader in the receiving groove and the other end contactable with the absorbent body.

[0016] According to the absorbent article and its manufacturing method and the production system for manufacturing the absorbent article provided by the present application, in the manufacturing method of the absorbent article, the cuts on the sensing layer and the leakproof backsheet are controlled based on the in-position signal of the same cut mark, so that the orthogonal projection of the sensing strip on the leakproof backsheet intersects with the storage groove that stores the data reader. In this way, the sensing strip having a predetermined length obtained has one end that can be connected to the data reader in the storage groove, and the other end that can contact the absorbent body. When the absorbent article is used, the absorbed liquid such as urine can penetrate the top sheet and penetrate into the absorbent body, and in this process, the one end of the sensing strip that contacts the absorbent body is conductive by the absorbed liquid in this part, and the data reader can obtain the conductivity data of the sensing strip and issue a replacement alert, and the absorbent article can be replaced in a timely manner based on the replacement alert. In addition, in the manufacturing method of the absorbent article, it is not necessary to separately form the mounting position of the data reader according to the position of the sensing strip, and production efficiency can be effectively improved. [Brief description of the drawings]

[0017] In order to more clearly describe the technical means in the embodiments of the present disclosure, the drawings that need to be used in the description of the embodiments are briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these drawings without creative labor.

[0018] [Figure 1] 1 is a flowchart of a method for manufacturing an absorbent article according to an embodiment of the present application. [Diagram 2] 1 is a schematic diagram showing a process of adhering a sensing strip according to an embodiment of the present application to one side of a top sheet. [Diagram 3] 3A to 3C are schematic diagrams showing a process of forming a receiving groove in a leak-proof backsheet according to an embodiment of the present application. [Figure 4] FIG. 2 is a schematic diagram of a top sheet and a sensing strip according to an embodiment of the present application. [Diagram 5] 1 is a schematic diagram of a leak-proof back sheet according to an embodiment of the present application. [Figure 6] 1 is a schematic diagram of an absorbent article according to an embodiment of the present application. [Figure 7] 1 is a schematic diagram of a sensing strip according to an embodiment of the present application; [Figure 8] 1 is a schematic diagram showing the cutting principle of a leak-proof backsheet according to an embodiment of the present application. FIG. [Explanation of symbols]

[0019] 20 absorbent article, 210 top sheet, 211 top sheet main layer, 212 elastic gather, 220 leak-proof back sheet, 221 storage groove, 230 absorbent body, 240 sensing layer, 241 sensing strip, 2411 sub-sensing strip, 250 cut mark, 260 data reader, 271 first cutter roll, 2711 fixed inner roll, a suction cavity, 2712 rotating outer roll, b suction hole, 2713 arc-shaped cutter, 272 second cutter roll, 2721 hollow cavity. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] In order to make the above objects, features and advantages of the present disclosure clearer and easier to understand, specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. In the following description, many specific details are described to provide a complete understanding of the present disclosure. However, the present disclosure can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present disclosure, so the present disclosure is not limited by the specific examples disclosed below.

[0021] As shown in FIGS. 1, 2 and 3, according to an embodiment of the present application, there is provided a method for manufacturing an absorbent article 20, which includes the following steps S110 to S160.

[0022] In step S110, the topsheet 210 and the leak-proof backsheet 220 are fed and transported along the longitudinal direction F. The topsheet 210 and the leak-proof backsheet 220 are provided facing each other with a gap therebetween, and an absorbent body 230 having a predetermined dimension is provided between the topsheet 210 and the leak-proof backsheet 220. The absorbent body 230 may be laid on the side of the leak-proof backsheet 220 facing the topsheet 210.

[0023] In step S120, the sensing layer 240 located on one side of the top sheet 210 is supplied and transported.

[0024] In step S130, an in-position signal of the cut mark 250 on the leakproof backsheet 220 is obtained, and based on the in-position signal of the cut mark 250, a cut on the sensing layer 240 is controlled to obtain a sensing strip 241 having a predetermined length.

[0025] In step S140, as shown in FIG. 4, the cut sensing strip 241 is adhered to the side of the top sheet 210 facing the absorbent body 230.

[0026] In step S150, as shown in Fig. 5, based on the in-position signal of the cut mark 250, the cut on the leakproof backsheet 220 is controlled to form a receiving groove 221 at a predetermined portion of the leakproof backsheet 220, and as shown in Fig. 6, the receiving groove 221 is for receiving a data reader 260, and the orthogonal projection of the sensing strip 241 onto the leakproof backsheet 220 intersects with the receiving groove 221. In this way, one end of the obtained sensing strip 241 is electrically connected to the data reader 260 in the receiving groove 221, so that data related to the absorbed liquid on the absorbent body 230 can be obtained from the sensing strip 241 by the data reader 260.

[0027] The predetermined portion of the leak-proof backsheet 220 is located on the side of the leak-proof backsheet 220 facing the topsheet 210 .

[0028] In step S160, the top sheet 210, the absorbent body 230 and the leak-proof back sheet 220 are sequentially bonded together so that one end of the sensing strip 241 can be connected to the data reader 260 in the receiving groove 221 and the other end can contact the absorbent body 230.

[0029] In the manufacturing method of the absorbent article 20, the cutting of the sensing layer 240 and the leakproof backsheet 220 is controlled based on the in-position signal of the same cut mark 250, so that the orthogonal projection of the sensing strip 241 on the leakproof backsheet 220 intersects with the accommodation groove 221 that accommodates the data reader 260. The sensing strip 241 having a predetermined length thus obtained has one end connectable to the data reader 260 in the accommodation groove 221, and the other end contactable with the absorbent body 230. When the absorbent article 20 is used, the absorbed liquid such as urine can penetrate the top sheet 210 and permeate the absorbent body 230, and in this process, the one end of the sensing strip 241 that contacts the absorbent body 230 is made conductive by the absorbed liquid in this portion, and the data reader 260 can obtain the conduction data of the sensing strip 241 and issue a replacement alert, and the absorbent article 20 can be replaced in a timely manner based on the replacement alert. Furthermore, in the manufacturing method of the absorbent article 20, there is no need to separately form an attachment position for the data reader 260 according to the position of the sensing strip 241, and production efficiency can be effectively improved.

[0030] As shown in FIG. 7, the sensing strip 241 includes two sub-sensing strips 2411 spaced apart in a direction perpendicular to the longitudinal direction F and parallel to the sensing strip 241, and before the absorbent article 20 absorbs urine, one end of each of the two sub-sensing strips 2411 away from the data reader 260 is in an off state.

[0031] As shown in FIG. 6, in the longitudinal direction F, the orthogonal projection of the sensing strip 241 onto the leakproof backsheet 220 intersects with the receiving groove 221 .

[0032] In one embodiment, the step of controlling the cut on the sensing layer 240 based on the inposition signal of the cut mark 250 to obtain the sensing strip 241 having a predetermined length specifically includes the step of setting a duration for continuously cutting the sensing layer 240 based on the inposition signal of the cut mark 250, where the duration for continuously cutting the sensing layer 240 is positively correlated with the predetermined length. Note that, the sensing layer 240 is continuously cut, and the duration of the continuous cut is positively correlated with the predetermined length, so that the sensing strip 241 having the predetermined length can be obtained.

[0033] Optionally, the sensing layer 240 can be cut by an arc-shaped cutter 2713, which includes an arc-shaped main body portion and an annular cutter provided on the arc-shaped main body portion and extending along the curvature direction of the arc-shaped main body portion, and the arc-shaped cutter 2713 can be controlled to rotate so as to continuously cut the sensing layer 240, thereby obtaining a sensing strip 241 having a predetermined length.

[0034] In one embodiment, the sensing layer 240 is cut at a predetermined speed based on the transport speed of the sensing layer 240. In this way, the cutting precision of the cut sensing strips 241 can be better guaranteed.

[0035] Optionally, the rotation speed of the arc cutter 2713 is set based on the transport speed of the sensing layer 240 to improve the cutting accuracy of the sensing strip 241 .

[0036] In one embodiment, the interval time between the start time of cutting the sensing layer 240 and the start time of cutting the leakproof backsheet 220 is set based on the position of the sensing strip 241 along the longitudinal direction F with respect to the receiving groove 221. In the absorbent article 20, the interval time between the start time of cutting the sensing layer 240 and the start time of cutting the leakproof backsheet 220 can be set based on the relative positional relationship between the orthogonal projection of the sensing strip 241 onto the leakproof backsheet 220 and the receiving groove 221 along the longitudinal direction F. In this way, in the finally manufactured absorbent article 20, it can be ensured that the orthogonal projection of the sensing strip 241 onto the leakproof backsheet 220 intersects with the receiving groove 221 in the longitudinal direction F, and one end of the sensing strip 241 is well electrically connected to the data reader 260 received in the receiving groove 221, improving the reliability of data reading of the absorbent article 20.

[0037] In one embodiment, the leak-resistant backsheet 220 is provided with a plurality of cut marks 250 spaced apart along the longitudinal direction F, as shown in FIG.

[0038] Based on the in-position signal of the cut mark 250, the cutting of the sensing layer 240 and the leak-proof backsheet 220 is controlled. In this manner, by cutting the sensing layer 240 and the leak-proof backsheet 220, respectively, based on the in-position signal of any one of the cut marks 250, it is ensured that in the finally manufactured absorbent article 20, the orthogonal projection of the sensing strip 241 onto the leak-proof backsheet 220 intersects with the accommodation groove 221 in the longitudinal direction F, and further that one end of the sensing strip 241 is well electrically connected to the data reader 260 accommodated in the accommodation groove 221. In addition, the multiple cut marks 250 are provided on the leak-proof backsheet 220 at intervals along the longitudinal direction F, and the multiple cut marks 250 can be used to cut the sensing layer 240 and the leak-proof backsheet 220 multiple times, respectively, facilitating the manufacture of multiple absorbent articles 20.

[0039] In one embodiment, as shown in FIG. 2, the step of adhering the cut sensing strip 241 to the side of the top sheet 210 facing the absorbent 230 specifically includes the steps of adsorbing the cut sensing strip 241 to a first cutter roll 271 that cuts the sensing strip 241, and controlling and rotating the first cutter roll 271 so as to transfer the adsorbed sensing strip 241 to the side of the top sheet 210 facing the absorbent 230.

[0040] In this way, after controlling the first cutter roll 271 to cut the sensing layer 240, the first cutter roll 271 can transfer the cut sensing strip 241 to the side of the top sheet 210 facing the absorbent body 230, thereby releasing the adsorption to the sensing strip 241, and transfer the sensing strip 241 to the side of the top sheet 210 facing the absorbent body 230, thereby further improving the production efficiency of the absorbent article 20.

[0041] Optionally, the first cutter roll 271 includes a fixed inner roll 2711 and a rotating outer roll 2712 rotatably connected to the fixed inner roll 2711 and surrounding the fixed inner roll 2711, the fixed inner roll 2711 having an adsorption cavity a to which a suction member is externally connected, the rotating outer roll 2712 having a plurality of adsorption holes b uniformly distributed on the outer peripheral surface of the rotating outer roll 2712, and the adsorption cavity a is connected to some of the adsorption holes b. The first cutter roll 271 further includes an arc-shaped cutter 2713 provided on the outer rotating roll 2712 and located outside the suction cavity a, and the arc-shaped cutter 2713 surrounds some of the suction holes b. In this way, while the outer rotating roll 2712 is rotating, the sensing layer 240 can be cut to obtain a sensing strip 241 having a predetermined length. After cutting, the sensing strip 241 is adsorbed to the suction hole b on the first cutter roll 271 and rotates along with the outer rotating roll 2712. When one end of the sensing strip 241 rotates toward the top sheet 210, the suction hole b at the portion of the outer rotating roll 2712 that abuts against the top sheet 210 does not communicate with the suction cavity a, and the sensing strip 241 gradually releases from the adsorbed state and becomes more easily adhered to one side of the top sheet 210.

[0042] Optionally, the rotation speed of the outer rotating roll 2712 is set according to the transport speed of the sensing layer 240. By setting the rotation speed of the arc-shaped cutter 2713 in this manner, the cutting accuracy of the sensing strip 241 can be improved.

[0043] In some embodiments, the step of controlling and rotating the first cutter roll 271 to transfer the adsorbed sensing strip 241 to the side of the topsheet 210 facing the absorbent body 230 specifically includes the step of controlling a hot melt adhesive sprayer to spray adhesive on one side of the topsheet 210 so that the sensing strip 241 can be adhered to the side of the topsheet 210 facing the absorbent body 230. In this way, it can be ensured that the sensing strip 241 is adhered to the side of the topsheet 210 facing the absorbent body 230.

[0044] Optionally, the number of spray heads of the hot melt adhesive sprayer can be selected according to the width dimension of the sensing strip 241, and all the spray heads of the hot melt adhesive sprayer can be spaced apart along the width direction of the sensing strip 241, and the width dimension of the sensing strip 241 is the dimension in the direction perpendicular to the longitudinal direction of the sensing strip 241. This allows the sensing strip 241 to be firmly attached to one side of the topsheet 210.

[0045] Optionally, the size of the adhesive droplets sprayed from the spray head of the hot melt adhesive spray machine is controlled to be between 1mm and 8mm, preferably between 1mm and 2mm. The adhesive is applied to one side of the top sheet 210 by setting a time interval between two adhesive droplets in adjacent time.

[0046] 3, in some embodiments, step S150 of controlling the cutting of the leakproof backsheet 220 based on the in-position signal of the cut mark 250 specifically includes a step of cutting the leakproof backsheet 220, sucking the cut end material into a hollow cavity 2721 of a second cutter roll 272 that cuts the leakproof backsheet 220, and discharging the cut end material through the hollow cavity 2721 of the second cutter roll 272. This makes it possible to cut the leakproof backsheet 220 and complete the discharge of the cut end material, thereby improving the production efficiency of the absorbent article 20.

[0047] Alternatively, a suitable shape of the second cutter roll 272 may be selected according to the shape of the data reader 260. Specifically, the blade edge of the second cutter roll 272 is elliptical, and the dimensions of the blade edge of the second cutter roll 272 are 30 mm x 20 mm. In this manner, the dimensions of the groove opening of the accommodation groove 221 formed in the leak-proof backsheet 220 are also 30 mm x 20 mm, making it easy to attach the data reader 260.

[0048] Alternatively, a straight line passing through one side edge of the cut mark 250 in the longitudinal direction F can be used as a reference reference line. Specifically, in the embodiment shown in FIG. 8, the reference reference line is a dashed line as shown. Based on a predetermined distance between the accommodating groove 221 and the reference reference line in the longitudinal direction F, the position of the second cutter roll 272 is adjusted relative to the reference reference line, and the second cutter roll 272 is controlled to cut the leakproof backsheet 220. In this way, the distance between the accommodating groove 221 formed in the leakproof backsheet 220 in the longitudinal direction F is approximately equal to the predetermined distance, which can meet the setting requirement.

[0049] 4, the topsheet 210 includes a topsheet main layer 211 and two elastic gathers 212 attached to opposite sides of the topsheet main layer 211. The manufacturing process of the topsheet 210 is as follows.

[0050] By winding the top sheet main layer 211 onto the first air payout reel, one end of the top sheet main layer 211 away from the first air payout reel passes through the first buffer payout device, the misalignment corrector and the spray head, and is fed and transported along the vertical direction F.

[0051] By winding the leak-proof gathering material around the second air pay-out reel, one end of the leak-proof gathering material separated from the second air pay-out reel passes through the second buffer winder and is supplied and transported along the vertical direction F.

[0052] The leak-proof gathered material that has passed through the second buffer payout device is cut in half, and two elastic polyurethane threads are continuously laid on each cut leak-proof gathered material, and the leak-proof gathered material with the elastic polyurethane threads laid thereon is folded using a folding plate to form an elastic gather 212.

[0053] The two resulting elastic gathers 212 are bonded to opposite sides of the topsheet main layer 211, respectively, to obtain the topsheet 210.

[0054] In this manner, when the absorbent article 20 is a disposable diaper, the absorbent article 20 manufactured using the top sheet 210 fits well on the user and provides good leakage prevention effects.

[0055] In one embodiment, the manufacturing process for the leakproof backsheet 220 is as follows.

[0056] The bottom nonwoven fabric material and the bottom breathable membrane material are bonded together to obtain the bottom base material layer.

[0057] A hook-and-loop fastener material is laminated to a nonwoven tape fabric, and the laminated whole is then divided in half to obtain a left tape layer and a right tape layer.

[0058] The left and right tape layers are respectively adhered to opposite sides of the bottom substrate layer.

[0059] After passing through the buffer, the deviation corrector and the positioner, the nonwoven fabric front tape material is cut into a long piece and attached to the bottom nonwoven fabric material to obtain the leak-proof back sheet 220.

[0060] In some embodiments, the manufacturing process for the absorbent body 230 includes: Supplying and conveying the absorbent layer along a longitudinal direction F; controlling a cut on the absorbent layer based on the in-position signal of the cut mark 250 to obtain an absorbent body 230 of a predetermined dimension; and adhering the absorbent body 230 to the side of the leakproof backsheet 220 facing the topsheet 210 such that the orthogonal projection of the absorbent body 230 onto the leakproof backsheet 220 and the storage grooves 221 are misaligned with each other. Specifically, in the longitudinal direction F, the orthogonal projection of the absorbent body 230 onto the leakproof backsheet 220 and the storage grooves 221 are misaligned with each other.

[0061] In this way, the absorbent body 230 can be adhered to the center of the side of the leak-proof backsheet 220 facing the topsheet 210, and the data reader 260 attached in the accommodation groove 221 can obtain signal data by the sensing strip 241 that the absorbent body 230 is absorbing the absorbent liquid.

[0062] Optionally, one end of the sensing strip 241 can be connected to the data reader 260 in the receiving groove 221, and the other end can contact the center of the absorbent body 230. When the absorbent article 20 manufactured in this manner is used, absorbed liquid such as urine penetrates the top sheet 210 and permeates the center region of the absorbent body 230, and in this process, the one end of the sensing strip 241 that contacts the absorbent body 230 is made conductive by the absorbed liquid in this portion, and the data reader 260 can obtain the conductivity data of the sensing strip 241 and issue a replacement alert to notify the user to replace the absorbent article 20. The data reader 260 can respond faster and issue a replacement alert faster when the absorbent article 20 absorbs a certain amount of absorbed liquid.

[0063] In some embodiments, after sequentially bonding the topsheet 210, absorbent body 230 and leak-proof backsheet 220, the method for manufacturing the absorbent article 20 further includes a step of cutting the entire bonded assembly to obtain a plurality of absorbent articles 20.

[0064] The present invention provides a production system for manufacturing an absorbent article 20, the production system including a controller having a computer program stored therein, the production system implementing the steps of the above-described manufacturing method when the controller executes the computer program.

[0065] Optionally, a printed pattern is provided on the breathable membrane of the leakproof backsheet 220, and the cut mark 250 is configured as a positioning luminous mark formed on one side edge along the vertical direction F of the printed pattern, and the production system for manufacturing the absorbent article 20 further includes a photoelectric sensor located above the leakproof backsheet 220, the photoelectric sensor being electrically connected to a controller, the photoelectric sensor being for acquiring an imposition signal of the cut mark 250 in the leakproof backsheet 220, and the controller cuts the leakproof backsheet 220 and the sensing layer 240 respectively based on the imposition signal of the cut mark 250, so that in the manufactured absorbent article 20, one end of the sensing strip 241 can be connected to the data reader 260 in the accommodating groove 221, and the other end can contact the absorbent body 230.

[0066] Alternatively, the positioning light-emitting mark may be a black light-emitting mark, a blue light-emitting mark, or a dark brown light-emitting mark, etc., and is preferably a black light-emitting mark. The positioning light-emitting mark has a dimension of c*d, where c is 5mm to 8mm, and d is 2mm to 5mm, and preferably the black light-emitting mark is 5mm*2mm.

[0067] The present invention provides an absorbent article 20 comprising a topsheet 210, a sensing strip 241, and a leak-proof backsheet 220, wherein the topsheet 210 is arranged along a longitudinal direction F, the sensing strip 241 has a predetermined length along the longitudinal direction F, and the sensing strip 241 is adhered to one side of the topsheet 210.

[0068] The leak-proof backsheet 220 is provided on the side of the topsheet 210 to which the sensing strip 241 is adhered, and a receiving groove 221 for receiving the data reader 260 is formed at a predetermined portion of the leak-proof backsheet 220, and the orthogonal projection of the sensing strip 241 onto the leak-proof backsheet 220 intersects with the receiving groove 221. In this way, one end of the sensing strip 241 can be easily electrically connected to the data reader 260 in the receiving groove 221.

[0069] The absorbent body 230 is provided between the top sheet 210 and the leak-proof back sheet 220, and the sensing strip 241 has one end connectable to the data reader 260 in the accommodation groove 221 and the other end contactable with the absorbent body 230. In this manner, the sensing strip 241 connected to the data reader 260 is conducted by the absorbent liquid absorbed in the absorbent article 20, and issues a replacement alert when the absorbent article 20 absorbs a certain amount of absorbent liquid.

[0070] In some embodiments, the sensing layer 240 includes two substrate layers and a conductive layer disposed between the two substrate layers, the conductive layer including two conductive strips spaced apart from each other. The substrate layer is made of flexible PET or PET / PP, and the specially treated PET material has good flexibility and the ability to be wound around a circumference with a minimum length of 50 mm.

[0071] Optionally, the sensing layer 240 is wound on a coil material, the diameter of the wound coil material being 276 mm.

[0072] Optionally, along the longitudinal direction F, the length of the sensing layer 240 is 500m to 1600m, preferably 800m.

[0073] The technical features of the above-described embodiments may be combined in any manner, and for the sake of brevity, not all possible combinations of the technical features of the above-described embodiments are described, but all such combinations should be considered to fall within the scope described in this specification unless there is a contradiction.

[0074] The above examples only describe some embodiments of the present application, and although the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent of the present application. It should be noted that those skilled in the art can make various modifications and improvements to the present application without departing from the spirit of the present application, and both of these modifications and improvements are within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application should be based on the scope of the attached claims.

Claims

1. A step of feeding and conveying a top sheet and a leak-proof back sheet along a longitudinal direction, the top sheet and the leak-proof back sheet being disposed opposite each other with a space therebetween, and an absorbent body having a predetermined dimension being disposed between the top sheet and the leak-proof back sheet; providing and conveying a sensing layer located on one side of the topsheet; obtaining an in-position signal of a cut mark on the leak-proof backsheet, and controlling a cut on the sensing layer based on the in-position signal of the cut mark to obtain a sensing strip having a predetermined length; Adhering the cut sensing strip to a side of the topsheet facing the absorbent body; a step of controlling a cut on the leakproof backsheet based on an in-position signal of the cut mark to form a receiving groove at a predetermined portion of the leakproof backsheet, the receiving groove being for receiving a data reader for acquiring the conduction data of the sensing strip, and an orthogonal projection of the sensing strip onto the leakproof backsheet intersects with the receiving groove; and sequentially adhering the top sheet, the absorbent body and the leak-proof back sheet so that one end of the sensing strip is connectable to the data reader in the storage groove and the other end is contactable with the absorbent body.

2. The step of controlling the cutting of the sensing layer based on the in-position signal of the cut mark to obtain a sensing strip having a predetermined length specifically includes: setting a duration for continuously cutting the sensing layer based on the cut mark in-position signal, The method for manufacturing an absorbent article according to claim 1, further comprising a step in which the duration of continuously cutting the sensing layer is positively correlated with the predetermined length.

3. The method for manufacturing an absorbent article according to claim 2, further comprising setting an interval time between a start time of cutting the sensing layer and a start time of cutting the leak-proof backsheet based on a position of the sensing strip along the longitudinal direction relative to the storage groove.

4. The method for manufacturing an absorbent article according to claim 2, further comprising the step of cutting the sensing layer at a predetermined speed based on a conveying speed of the sensing layer.

5. The method for manufacturing an absorbent article according to claim 1, wherein the leak-proof backsheet is provided with a plurality of the cut marks spaced apart along the longitudinal direction.

6. The step of adhering the cut sensing strip to the side of the top sheet facing the absorbent body specifically includes: adsorbing the cut sensing strip to a first cutter roll that cuts the sensing strip; A method for manufacturing an absorbent article as described in any one of claims 1 to 5, characterized in that it includes a step of controlling and rotating the first cutter roll so as to transfer the adsorbed sensing strip to the side of the top sheet facing the absorbent body.

7. Specifically, the step of controlling the cutting of the leak-proof backsheet based on the cut mark in-position signal includes: The method for manufacturing an absorbent article according to any one of claims 1 to 5, further comprising the steps of cutting the leak-proof backsheet, sucking the cut scrap into a hollow cavity of a second cutter roll that cuts the leak-proof backsheet, and discharging the cut scrap through the hollow cavity of the second cutter roll.

8. The manufacturing process of the absorbent body includes: feeding and conveying an absorbent layer along a machine direction; controlling a cut on the absorbent layer based on the cut mark in-position signal to obtain the absorbent having a predetermined dimension; The method for manufacturing an absorbent article according to claim 1, further comprising a step of adhering the absorbent body to the side of the leak-proof backsheet facing the topsheet so that the orthogonal projection of the absorbent body onto the leak-proof backsheet and the storage groove are offset from each other.

9. A production system for manufacturing absorbent articles, comprising a controller in which a computer program is stored, and which, when the controller executes the computer program, realizes the steps of the manufacturing method described in any one of claims 1 to 8.

10. A top sheet provided along the longitudinal direction; a sensing strip having a predetermined length along the longitudinal direction and attached to one side of the top sheet; a leak-proof backsheet provided on the side of the topsheet to which the sensing strip is adhered, the leak-proof backsheet having a receiving groove formed in a predetermined portion thereof for receiving a data reader, and an orthogonal projection of the sensing strip onto the leak-proof backsheet intersects with the receiving groove; an absorbent body disposed between the topsheet and the leak-resistant backsheet, An absorbent article, characterized in that one end of the sensing strip is connectable to the data reader in the accommodation groove and the other end is contactable with the absorbent body.

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