A hollowing process and a sanitary napkin

Abstract

The invention discloses a hollowing process and a sanitary napkin, comprising a guide surface layer, a plurality of guide layer units being sequentially arranged along the conveying direction thereof, the guide layer units being provided with hollow parts and adhesive parts spaced apart along the conveying direction; S1, a sheet moving component sequentially cuts out the hollow parts of the guide layer units to form slices and sucks them up; S2, glue is applied to the adhesive parts; S3, a sheet moving component moves the slices in S1 to the adhesive parts in the same guide layer unit, and then sticks the slices on the adhesive parts; S4, glue is applied to the guide layer units; S5, an integration component sequentially cuts out the guide layer units after the slices are stuck and sucks them up; S6, an integration component moves the guide layer units of S5 and sticks them on the glued parts of the surface layer, the slices of the invention are cut from the guide layer units being conveyed, and the phases are shifted backward, so as to be cut and stuck on the guide layer units of the same sheet, and there is no need to set up an additional absorbing material for cutting and transportation, thereby reducing the area occupied by the equipment and improving the utilization rate of the guide sheet layer.

Description

Technical Field

[0001] The invention relates to the field of sanitary napkin manufacturing, in particular to a hollowing process and a sanitary napkin. Background Art

[0002] In order to improve the liquid absorption and leakage prevention effects of sanitary napkins, in the production process of sanitary napkins on the market, sheets are often cut out from some absorbent materials, and then the cut sheets are collected for transportation, and finally stacked and attached to the cut and formed guide sheet layer, while the waste of the absorbent material after cutting is rolled up separately. However, this production process generates a lot of waste, and it is necessary to set up additional parts for conveying, cutting, transporting, pasting and rolling up the absorbent materials. The entire process equipment occupies a large area and is difficult to debug. Summary of the invention

[0003] The purpose of the present invention is to provide a hollowing process and a sanitary napkin to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The solution of the present invention to solve its technical problem is:

[0005] A hollowing process includes: a guide surface layer is provided with a plurality of guide layer units in sequence along its conveying direction, and the guide layer units are provided with hollow parts and adhesive parts arranged at intervals along the conveying direction; S1, a sheet moving component sequentially cuts out the hollow parts of the guide layer units to form slices and sucks them up; S2, glue is applied to the adhesive part; S3, the sheet moving component moves the slices in S1 to the adhesive part in the same guide layer unit, and then sticks the slices on the adhesive part; S4, glue is applied to the guide layer unit or the surface layer; S5, an integration component sequentially cuts out the guide layer units after the slices are attached and sucks them up; S6, an integration component moves the guide layer unit of S5 and sticks it on the surface layer.

[0006] The technical solution has at least the following beneficial effects: the sheet-moving component cuts out the hollow parts in the guide layer unit one by one, and sticks the cut slices to the adhesive part of the same guide layer unit; the integration component then cuts off the guide layer unit and combines the sanitary napkins; the slices of the present invention are cut from the guide layer unit being transported, and the phase is shifted backward to be cut and stuck on the same guide layer unit, without the need to set up additional absorbent materials for cutting, and then stick them on the guide sheet layer through transportation, thereby reducing the area occupied by the equipment, while improving the utilization rate of the guide sheet layer and reducing waste; when the sanitary napkin is in use, the hollow part on the guide layer unit is concave to achieve drainage and liquid collection, and the slices of the adhesive part are raised to achieve flow blocking, so that a three-step structure is formed in the internal guide layer of a sanitary napkin, thereby improving the efficiency of the sanitary napkin in absorbing liquid and effectively preventing liquid from leaking backwards.

[0007] As a further improvement of the above technical solution, the sheet transfer assembly includes a feed roller and a support roller a. The feed roller and support roller a are arranged on both sides of the guide surface layer. A cutter and a negative pressure hole are arranged on the side wall of the feed roller. The cutter is in a ring shape matching the outer periphery of the hollow part. The cutter surrounds the negative pressure hole, wherein: after the cutter cuts out the slice along the hollow part, the negative pressure hole sucks up the slice. The feed roller and support roller a rotate continuously, and their linear speed is consistent with the conveying speed of the guide surface layer. The cutter is in a ring shape matching the outer periphery of the hollow part. Support roller a supports the guide surface layer. The hollow part can be completely cut out and sliced ​​under the cooperation of the cutter and support roller a. At the same time, the negative pressure hole in the cutter sucks up the slice, so that the slice can be moved away from its cutting end as the feed roller rotates, thereby realizing the transfer of the slice.

[0008] As a further improvement of the above technical solution, the sheet moving assembly includes a transfer roller, a pressing device and a roller b, all of which are located downstream of the material picking roller. The periphery of the transfer roller is provided with a suction hole, the periphery of the pressing device has a material receiving end and a material pressing end, and the pressing device is provided with an air suction duct from the material receiving end to the material pressing end. The transfer roller is respectively abutted against the material picking roller and the material receiving end, and the material pressing end and the roller b are clamped on both sides of the guide surface layer, wherein: the slice is transferred from the material picking roller to the transfer roller through the suction hole, and then the slice moves along the material receiving end to the material pressing end through the air suction duct and then adheres to the guide surface layer. The outer periphery of the pressing device continuously moves from the material receiving end to the pressing end, and the moving direction is consistent with the conveying direction of the guide surface layer. When the slice is transferred to the intersection of the material taking roller and the transfer roller, the transfer roller sucks the slice through the suction hole and changes the conveying direction of the slice at the same time. Until the slice moves to the material receiving end of the pressing device with the rotation of the transfer roller, the suction duct drives the slice to move along the suction duct toward the pressing end. When the slice is ingested between the pressing end and the guide surface layer, the adhesive part of the cut guide layer unit is conveyed to the pressing end, so that the slice can be exactly fitted, and the conveying direction of the slice during fitting is kept consistent with the conveying direction of the guide layer, thereby improving the slice fitting effect.

[0009] As a further improvement of the above technical solution, the pressing device includes a negative pressure conveyor belt, and a first pulley and a second pulley supporting the negative pressure conveyor belt, the air intake duct is arranged on the negative pressure conveyor belt, the material receiving end is located between the first pulley and the transfer roller, the pressing end is located between the second pulley and the roller b, and the diameter of the second pulley is smaller than the conveying length of the slice. The negative pressure conveyor belt is transported in the circumferential direction under the rotation of the first pulley and the second pulley. When the slice moves to the pressing end with the negative pressure conveyor belt, because the diameter of the second pulley is smaller than the length of the slice along the conveying direction, the slice will naturally come out at the second pulley and stick to the sticking part, reducing the possibility of the slice continuing to transfer with the pressing device, reducing the phenomenon of missing or wrong sticking of the slice, and improving production efficiency.

[0010] As another improvement of the above technical solution, the pressing device includes a pressing roller, and the parts of the pressing roller that respectively contact the transfer roller and the top surface of the guide surface layer are the receiving end and the pressing end. The pressing roller takes the slice from the receiving end and keeps rotating until the slice moves to the pressing end and is fixed to the pasting part. The structure is simple and easy to debug.

[0011] As another improvement of the above technical solution, the glue spraying port acting on the pasting part is directly opposite to the guide surface layer, and the material taking roller, the glue spraying port and the supporting roller b are sequentially arranged along the conveying direction of the guide surface layer. The glue spraying spacing of the glue spraying port is consistent with the gap between the hollow part and the glue part, ensuring accurate lamination of the slices, and the direction of the glue spraying port is located between the cutting end of the slice and the laminating end of the slice, preventing the transfer roller from scratching the glue during the cutting process, reducing pollution and improving product production quality.

[0012] As another improvement of the above technical solution, the distance between any adjacent hollow parts and the pasting part is L, and the circumference of the feeding roller is C=L, wherein: after the feeding roller sucks up the slice located in the hollow part and rotates one circle, the guide surface layer moves a distance L along the conveying direction, and the feeding roller sticks the slice to the pasting part of the same guide layer unit. The feeding roller can jointly realize the cutting and pasting of the slice, so that after the feeding roller rotates one circle, the target slice can be cut out from the hollow part of the guide layer unit, and the corresponding pasting part on the same guide layer unit is realized to realize integrated cutting and pasting, and then rotate one circle to cut out the hollow part of the next guide layer unit, thereby reducing space occupation and reducing production costs.

[0013] As a further improvement of the above technical solution, the glue spraying port acting on the pasting part is directly opposite to the guide surface layer, and the glue spraying port and the sheet moving assembly are sequentially arranged along the conveying direction of the guide surface layer. The glue spraying port sprays glue on the pasting part when the sheet moving assembly cuts out the slices, so that the material taking roller can timely adhere the slices to the pasting part, and the structure is reliable.

[0014] As another improvement of the above technical solution, the integrated component includes a cutting roller, a roller c and a roller d. The cutting roller and the roller c are clamped on both sides of the guide surface layer, and the cutting roller has a blade that matches the shape of the guide layer unit. When the guide layer moves between the cutting roller and the roller c, the guide layer unit can be cut in sequence. The roller c sucks up the cut guide layer unit and sticks it on the surface layer. The position where the guide layer unit 210 sticks to the surface layer 180 is taken as the overlapping end. The roller d170 and the roller c160 are located on both sides of the overlapping end. The cut guide layer unit 210 is sucked by the roller c160 and transported to the overlapping end, so that the guide layer unit 210 can be attached to the surface layer 180.

[0015] The present invention also includes a sanitary napkin, wherein the axis extends in the front-to-back direction, and the sanitary napkin includes a surface layer, a guide layer, and a surface layer stacked in sequence from top to bottom, and the guide layer includes a layer body and slices, and the slices are taken out from the layer body to form liquid collection holes on the layer body, and the slices are attached to the layer body and are spaced behind the liquid collection holes along the central axis.

[0016] This technical solution has at least the following beneficial effects: when the sanitary napkin is in use, the concave part of the hollow portion on the guide layer unit can drain and gather liquid, and at the same time its loose cross-section can also absorb and penetrate the liquid, while the raised sections of the adhesive portion can block the flow, so that a three-step structure is formed in the internal guide layer of a sanitary napkin, thereby improving the efficiency of the sanitary napkin in absorbing liquid, effectively preventing liquid from leaking backwards, and improving the utilization rate of the guide layer, while enhancing the absorption and leakage-proof effects of the sanitary napkin, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0018] Figure 1 This is the hollowing process provided by the first embodiment of the present invention;

[0019] Figure 2 is a top view of the sanitary napkin provided in the present invention;

[0020] Figure 3 is a side cross-sectional view of a sanitary napkin provided in the present invention;

[0021] Figure 4 This is the hollowing process provided by the second embodiment of the present invention;

[0022] Figure 5 This is the hollowing process provided by the third embodiment of the present invention.

[0023] In the accompanying drawings: 110-guide surface layer, 111-hollow part, 112-adhesive part, 121-feeding roller, 122-roller a, 130-transfer roller, 141-pressing roller, 142-roller b, 150-cutting roller, 160-roller c, 170-roller d, 180-surface layer, 210-guide layer unit, 310-slice, 320-layer body, 410-negative pressure conveyor belt, 420-first pulley, 430-second pulley. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connecting accessories according to the specific implementation situation. The various technical features in the present invention can be combined interchangeably without conflicting with each other.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figure 1 , Figure 2 and Figure 3The guide surface layer 110 is provided with a plurality of guide layer units 210 in sequence along its conveying direction, and the guide layer units 210 are provided with hollow parts 111 and adhesive parts 112 arranged at intervals along the conveying direction, wherein the hollowing process of the present invention comprises: S1, the sheet moving component sequentially cuts out the hollow parts 111 of the guide layer units 210 to form slices 310 and sucks them up; S2, applies glue to the adhesive part 112; S3, the guide surface layer 110 is continuously conveyed, and the sheet moving component moves the slices 310 in S1 to the same After the guide layer unit 210 is attached to the adhesive portion 112, the slice 310 is attached to the adhesive portion 112; S4, the surface layer 180 is continuously transported, and glue is applied on the guide layer unit after the slice 310 is attached or on the surface layer 180; S5, the integration component sequentially cuts and sucks up the guide layer unit 210 after the slice 310 is attached; S6, the integration component moves the guide layer unit 210 of S5, and sequentially attaches the guide layer unit 210 to the glued portion of the surface layer 180.

[0029] The sheet transfer assembly in this embodiment includes a pick-up roller 121 , a support roller a122 , and a transfer roller 130 , a material pressing device and a support roller b142 , all of which are located downstream of the pick-up roller 121 .

[0030] The feeding roller 121 and the supporting roller a122 are arranged on both sides of the guide surface layer 110, and the feeding roller 121 and the supporting roller a122 are both against the guide surface layer 110. A cutter and a negative pressure hole are provided on the side wall of the feeding roller. The cutter is in a ring shape matching the outer periphery of the hollow part, and the cutter surrounds the negative pressure hole.

[0031] Moreover, the outer periphery of the transfer roller 130 is provided with a material suction hole, the outer periphery of the material pressing device has a material receiving end and a material pressing end, the material pressing device is provided with an air suction channel in the portion from the material receiving end to the material pressing end, the transfer roller 130 is respectively against the material taking roller 121 and the material receiving end, and the material pressing end and the support roller b142 are clamped on both sides of the guide surface layer 110. The material pressing device in this embodiment includes a material pressing roller 141, and the portions of the material pressing roller 141 that are respectively against the top surfaces of the transfer roller 130 and the guide surface layer 110 are the material receiving end and the material pressing end, and the air suction channel is the air suction hole on the surface of the material pressing roller 141.

[0032] Specifically, during production, the feed roller 121 and the idler a122 rotate continuously, and their linear speed is consistent with the conveying speed of the guide surface layer 110. The cutter is in a ring shape that matches the outer periphery of the hollow portion. The idler a supports the guide surface layer. The hollow portion can be completely cut out and formed into slices under the cooperation of the cutter and the idler a. At the same time, the negative pressure hole in the cutter sucks up the slices, so that the slices can be moved away from the cutting end as the feed roller rotates, so that the slices 310 can be moved away from the cutting end as the feed roller 121 rotates. The feed roller 121 and the idler a122 cut the hollow portion 111 one by one. When the slices 310 are transferred to the feed roller 121 and the transfer roller 13 0, the transfer roller 130 sucks away the slice 310 through the suction hole and changes the conveying direction of the slice 310 at the same time, until the slice 310 moves to the receiving end of the pressing roller 141 with the rotation of the transfer roller 130, and the pressing roller 141 continues to rotate, so that the suction channel drives the slice 310 to move toward the pressing end along the suction channel. When the slice 310 is ingested between the pressing end and the guide surface layer 110, the adhesive portion 112 of the cut guide layer unit 210 is conveyed to the pressing end, so that the slice 310 can be exactly fitted, and the conveying direction of the slice 310 during fitting is kept consistent with the conveying direction of the guide sheet layer, thereby improving the fitting effect of the slice 310 and facilitating debugging.

[0033] It should be noted that the length of the cutter is 0.01cm to 0.02cm, and the hardness of the cutter is higher than that of the roller a122 to prevent the cutter from being damaged. In addition, in some embodiments, a groove may be provided on the side wall of the roller a122 corresponding to the position where the cutter engages. In addition, a cutter may be provided on the side wall of the roller a122, and the cutter is in a ring shape matching the outer periphery of the hollow portion 111. The side wall of the feeding roller 121 is provided with a groove and a negative pressure hole, and the groove surrounds the negative pressure hole. When the cutter rotates to engage with the groove, the hollow portion 111 is completely cut out to form a slice 310 under the action of the cutter, and at the same time, the negative pressure hole in the groove or the negative pressure hole in the cutter sucks up the slice 310.

[0034] It should be noted that each time the cutter cuts, a groove is corresponding to the cut, which prevents the cutter from being damaged and improves the effect of cutting the hollow portion 111. In addition, the portion where the cutter acts on the guide surface layer 110 is the cut-out end, and the cutting cycle of the cutter matches the cycle of the hollow portion 111 passing through the cut-out end, ensuring accurate cutting of the slice 310. In addition, step S2 of the hollowing process can be implemented before step S1 or after step S1, etc., and can be adjusted according to actual production, and the order of listing the steps is not necessarily the production order.

[0035] The slice 310 of the present invention is cut from the guide layer unit 210 being transported and phase-shifted to achieve cutting and pasting on the same guide layer unit 210. There is no need to set up a separate conveying route for the absorbent material, that is, there is no need to cut, transport, and paste the absorbent material on the guide layer and roll it up, which reduces the area occupied by the equipment and improves the utilization rate of the guide layer while reducing waste. When the sanitary napkin is in use, the hollow portion 111 on the guide layer unit 210 is concave to achieve drainage and liquid collection, and the slice 310 of the adhesive portion 112 is raised to achieve flow obstruction, so that a three-step structure is formed in the internal guide layer of a sanitary napkin, thereby improving the efficiency of the sanitary napkin in absorbing liquid and effectively preventing liquid from leaking backwards.

[0036] In this embodiment, the guide layer unit 210 is adhered to the surface layer 180. In fact, the surface layer 180 can be a sheet layer superimposed on any side of the guide layer unit 210. In fact, it can be a layer structure that may be adhered in the production of sanitary napkins, such as non-woven fabric, toilet paper, water-repellent layer or even activated carbon surface layer. This application does not limit the material of the surface layer 180 or on which side of the guide layer unit 210 it is located.

[0037] In addition, to ensure the realization of cutting and pasting the same piece, when applying glue to the surface layer 180 , the glue is applied on the surface layer 180 at intervals according to the interval between two adjacent guide layer units 210 .

[0038] In this embodiment, the integrated assembly includes a cutting roller 150, a roller c160 and a roller d170. The cutting roller 150 and the roller c160 are sandwiched on both sides of the guide surface layer 110, and the cutting roller 150 has a blade that matches the shape of the guide layer unit 210. When the guide sheet layer moves between the cutting roller 150 and the roller c160, the guide layer unit 210 can be cut in sequence. The position where the guide layer unit 210 is attached to the surface layer 180 is the overlapping end, and the roller d170 and the roller c160 are located on both sides of the overlapping end. The cut guide layer unit 210 is adsorbed by the roller c160 and transported to the overlapping end, so that the guide layer unit 210 can be attached to the surface layer 180.

[0039] In actual production, glue is usually applied to the guide layer unit 210 after the slices 310 are bonded, and the guide layer unit 210 is transferred around the roller c160 to the surface layer 180 for bonding after being cut. Alternatively, the place where glue is applied to the surface layer 180 may be located upstream of the overlapped end, so that the guide layer unit 210 can be bonded. Moreover, the cutting roller 150 cuts the guide surface layer 110 directly, so that the guide surface layer 110 is directly cut into multiple guide layer units 210, which are then sucked away and transferred by the roller c160, which is convenient for cutting, and there is no waste in the cutting process, and there is no need to rewind the guide surface layer 110 separately.

[0040] In this embodiment, the rotation axes of roller a122, roller b142, roller c160, roller d170, material picking roller 121, transfer roller 130, pressure roller 141 and cutting roller 150 are parallel to each other, and the material picking roller 121, transfer roller 130, pressure roller 141 and roller c160 all adjust the adsorption force on the material through the air distribution disk.

[0041] Reference Figure 4 In order to reduce the phenomenon of missing or wrong pasting of the slice 310, the slice transfer assembly in the second embodiment includes a feed roller 121, a roller a122, and a transfer roller 130, a pressing device and a roller b142 all located downstream of the feed roller 121. The feed roller 121 and the roller a122 are arranged on both sides of the guide surface layer 110. A cutter and a negative pressure hole are arranged on the side wall of the feed roller 121. The cutter is annular and matches the outer periphery of the hollow part 111. The cutter surrounds the negative pressure hole. The pressing device includes The negative pressure conveyor belt 410, and the first pulley 420 and the second pulley 430 supporting the negative pressure conveyor belt 410, the material taking roller 121, the transfer roller 130 and the negative pressure conveyor belt 410 are abutted in sequence, the suction duct is arranged on the negative pressure conveyor belt 410, the material receiving end is located between the first pulley 420 and the transfer roller 130, the material pressing end is located between the second pulley 430 and the roller b142, and the diameter of the second pulley 430 is smaller than the conveying length of the slice 310.

[0042] Specifically, the slice 310 cut out from the cutting end moves with the material taking roller 121 to the transfer roller 130 and is transferred, and then rotates along the transfer roller 130 to the receiving end of the negative pressure conveyor belt 410. The negative pressure conveyor belt 410 transports the slice 310 in a circumferential direction under the rotation of the first pulley 420 and the second pulley 430. When the slice 310 moves to the pressing end with the negative pressure conveyor belt 410, because the diameter of the second pulley 430 is smaller than the length of the slice 310 along the conveying direction, the slice 310 will naturally fall out from the second pulley 430 under its own resilience and adhere to the pasting portion 112, thereby reducing the possibility of the slice 310 continuing to be transferred with the pressing device, reducing the phenomenon of missing or wrong pasting of the slice 310, and improving production efficiency. It should be noted that, because the slice 310 can be transferred between the pick-up roller 121, the transfer roller 130 and the first pulley 420 respectively, the diameters of the pick-up roller 121, the transfer roller 130 and the first pulley 420 are all larger than the conveying length of the slice 310 to ensure the operation of the equipment.

[0043] Moreover, in this embodiment, the glue spraying port acting on the adhesive portion 112 is directly opposite to the guide surface layer 110 , and the material taking roller 121 , the glue spraying port and the support roller b142 are sequentially arranged along the conveying direction of the guide surface layer 110 .

[0044] Specifically, the glue spraying spacing of the glue spraying port and the gap between the hollow portion 111 and the adhesive portion are consistent, ensuring that the slice 310 is accurately fitted. Moreover, the glue spraying port is oriented between the cutting end of the slice 310 and the fitting end of the slice 310, preventing the transfer roller 130 from scratching the glue during the cutting process, reducing pollution, and improving product production quality.

[0045] Reference Figure 5 In order to further reduce the space occupied by the equipment and reduce the production cost, in Example 3, the sheet moving assembly includes a feeding roller 121 and a roller a122. The feeding roller 121 and the roller a122 are arranged on both sides of the guide surface layer 110. A cutter and a negative pressure hole are provided on the side wall of the feeding roller. The cutter is in a ring shape matching the outer periphery of the hollow part. The cutter surrounds the negative pressure hole. The distance between any adjacent hollow parts and the pasting part is L. The circumference of the feeding roller C=L, wherein: after the feeding roller sucks up the slice located in the hollow part and rotates one circle, the guide surface layer moves a distance L along the conveying direction, and the feeding roller sticks the slice to the pasting part of the same guide layer unit.

[0046] In addition, a cutting groove may be provided on the feeding roller 121, and n cutting knives may be provided on the supporting roller a122, and the circumference of the supporting roller a122 is 2n times the circumference of the feeding roller 121. The specific process is as follows: S1, glue is applied to the pasting portion 112; S2, after the cutting knife is engaged with the cutting groove, the cutting knife cuts out a slice 310 along the hollow portion 111, and the negative pressure hole in the cutting groove sucks up the slice 310; S3, the guide surface layer 110 moves a distance L, the circumference C of the feeding roller 121 is L, and the slice 310 is aligned with the pasting portion 112 of the same guide unit after rotating one circle with the feeding roller 121 and is pasted; S4, glue is applied to the guide layer unit 210; S5, the integration component cuts off and sucks up the guide layer unit 210 after pasting the slice 310 in turn; S6, the integration component moves the guide layer unit 210 of S5 and sticks it to the glued part of the surface layer 180. In fact, in the above embodiments, the take-up roller may not be provided with a groove.

[0047] The feeding roller 121 in this embodiment can jointly realize the cutting and bonding of the slice 310, so that the feeding roller 121 rotates one circle, and the target slice 310 can be cut out from the hollow part 111 of the guide layer unit 210, and correspondingly attached to the adhesive part 112 on the same guide layer unit 210, so as to realize integrated cutting and bonding, and reduce space occupation. At the same time, the circumference of the roller a122 is an even multiple of the circumference of the feeding roller 121, and the number of the cutters is correspondingly n along the center array of the roller a122, so that after the feeding roller 121 rotates two circles, the cutting groove on it can be matched with the cutter, and at the same time, it can also prevent the cutter from affecting the bonding process of the slice 310, thereby ensuring the production effect.

[0048] Moreover, in this embodiment, the glue spraying port acting on the sticking portion 112 is directly opposite to the guide surface layer 110 , and the glue spraying port and the sheet moving assembly are sequentially arranged along the conveying direction of the guide surface layer 110 .

[0049] Specifically, the glue spray port sprays glue on the slice 310 cut out by the slice moving assembly and sent to the pasting portion 112, so that the material taking roller 121 can timely adhere the slice 310 to the pasting portion 112, and the structure is reliable.

[0050] The present invention relates to a hollowing device. In some embodiments, the hollowing device includes a sheet moving assembly, wherein the sheet moving assembly includes a feeding roller 121, a roller a122, and a transfer roller 130, a pressing device and a roller b142, all of which are located downstream of the feeding roller 121. The feeding roller 121 and the roller a122 are arranged on both sides of the guide surface layer 110, and the pressing device and the roller b142 are also arranged on both sides of the guide surface layer 110. At the same time, the feeding roller 121, the transfer roller 130 and the pressing device are abutted in sequence, so that the slice 310 can be taken from the guide surface layer 110 and then transported back to the guide surface layer 110 in sequence through the feeding roller 121, the transfer roller 130 and the pressing device.

[0051] Specifically, the periphery of the pressing device continuously moves from the material receiving end to the pressing end, and the moving direction is consistent with the conveying direction of the guide surface layer 110. When the slice 310 is transferred to the intersection of the material taking roller 121 and the transfer roller 130, the transfer roller 130 sucks away the slice 310 through the suction hole, and at the same time changes the conveying direction of the slice 310, until the slice 310 moves to the material receiving end of the pressing device with the rotation of the transfer roller 130, and the suction channel drives the slice 310 to move toward the pressing end along the suction channel. When the slice 310 is ingested between the pressing end and the guide surface layer 110, the adhesive portion 112 of the cut guide layer unit 210 is conveyed to the pressing end, so that the slice 310 can be exactly bonded, and the conveying direction of the slice 310 during bonding is kept consistent with the conveying direction of the guide layer, thereby improving the bonding effect of the slice 310

[0052] In fact, the pressing device can be just a pressing roller 141, or a negative pressure conveyor belt 410 assembly, and the first pulley 420 and the second pulley 430 in the negative pressure conveyor belt 410 are respectively against the transfer roller 130 and the guide surface layer 110.

[0053] In some other embodiments, the sheet moving assembly of the hollowing device may also include a feeding roller 121 and a roller a122. The feeding roller 121 and the roller a122 are arranged on both sides of the guide surface layer 110. The distance between any adjacent hollow parts 111 and the adhesive parts 112 is L. The circumference C of the feeding roller 121 is L. A cutter and a negative pressure hole are provided on the side wall of the feeding roller. The cutter is in a ring shape matching the outer periphery of the hollow part. The cutter surrounds the negative pressure hole. The number of cutters is 1.

[0054] The hollowing device can realize cutting, transferring and pasting of slices 310 on the same roller, thereby reducing space occupation and facilitating installation.

[0055] Reference Figure 2 and Figure 3 The present invention also includes a sanitary napkin, wherein the axis extends in the front-to-back direction, and the sanitary napkin includes a surface layer, a guide layer, and a surface layer 180 stacked in sequence from top to bottom, and the guide layer includes a layer body 320 and a slice 310, and the slice 310 is taken out from the layer body 320 to form a liquid collection hole on the layer body 320, and the slice 310 is attached to the layer body 320 and is spaced behind the liquid collection hole along the central axis.

[0056] Specifically, when the sanitary napkin is in use, the hollow portion 111 and the adhesive portion 112 are arranged at intervals along the extension direction of the central axis of the sanitary napkin. The hollow portion 111 on the guide layer unit 210 is removed to form a liquid collecting hole, and its concave part is opposite to the discharge point to achieve drainage and liquid collection. At the same time, the loose cross-section at the liquid collecting hole can also achieve absorption and penetration of the liquid, and the slice 310 of the adhesive portion 112 is raised, and the raised part is located in the crotch seam to achieve flow obstruction, so that a three-step structure is formed in the internal guide layer of a sanitary napkin along its central axis, thereby improving the efficiency of the sanitary napkin in absorbing liquid, effectively preventing liquid from leaking backwards, and improving the utilization rate of the guide layer. At the same time, the absorption and leakage-proof effects of the sanitary napkin are enhanced, thereby improving the user experience.

[0057] In fact, after the guide layer unit 210 is bonded to the surface layer 180, the surface layer will continue to be bonded and cut to form a sanitary napkin unit, wherein the surface layer can be a non-woven fabric, and the surface layer 180 can be a composite of a water-absorbent material and a water-repellent material.

[0058] The preferred embodiments of the present invention are specifically described above, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A hollowing process, Features: The following steps are involved: The guide surface layer (110) is provided with a plurality of guide layer units (210) in sequence along the conveying direction thereof, and the guide layer units (210) are provided with hollow portions (111) and adhesive portions (112) arranged at intervals along the conveying direction; S1, the sheet moving assembly sequentially cuts out the hollowed-out parts (111) of the guide layer unit (210) to form slices (310) and sucks them up; S2, applying glue to the pasting portion (112); S3, the slice moving component moves the slice (310) in S1 to the sticking portion (112) in the same guide layer unit (210), and then sticks the slice (310) on the sticking portion (112); S4, applying glue onto the guide layer unit (210) or the surface layer (180); S5, the integration component sequentially cuts off and sucks up the guide layer units (210) after the laminated slices (310); S6. The integration component moves the guide layer unit (210) of S5 and attaches it to the surface layer (180).

2. A hollowing process according to claim 1, Features: The sheet moving assembly comprises a material taking roller (121) and a roller a (122). The material taking roller (121) and the roller a (122) are arranged on both sides of the guide surface layer (110). A cutter and a negative pressure hole are arranged on the side wall of the material taking roller (121). The cutter is in a ring shape matching the outer periphery of the hollow part (111). The cutter surrounds the negative pressure hole, wherein: After the cutter cuts out the slice (310) along the hollow portion (111), the negative pressure hole sucks up the slice (310).

3. A hollowing process according to claim 2, Features: The sheet transfer assembly comprises a transfer roller (130), a material pressing device and a support roller b (142) all located downstream of a material taking roller (121); a material suction hole is provided on the periphery of the transfer roller (130); a material pressing device has a material receiving end and a material pressing end on the periphery; the material pressing device is provided with an air suction channel in the portion from the material receiving end to the material pressing end; the transfer roller (130) is respectively pressed against the material taking roller (121) and the material receiving end; the material pressing end and the support roller b (142) are clamped on both sides of the guide surface layer (110); wherein: The slice (310) is transferred from the material taking roller (121) to the transfer roller (130) through the material suction hole, and then the slice (310) moves along the material receiving end to the material pressing end through the air suction channel and then adheres to the guide surface layer (110).

4. A hollowing process according to claim 3, Features: The material pressing device includes a negative pressure conveyor belt (410), and a first pulley (420) and a second pulley (430) supporting the negative pressure conveyor belt (410); the air suction duct is arranged on the negative pressure conveyor belt (410); the material receiving end is located between the first pulley (420) and the transfer roller (130); the material pressing end is located between the second pulley (430) and the roller b (142); and the diameter of the second pulley (430) is smaller than the conveying length of the slice (310).

5. A hollowing process according to claim 3, Features: The material pressing device comprises a material pressing roller (141), and the parts of the material pressing roller (141) respectively contacting the top surfaces of the transfer roller (130) and the guide surface layer (110) are the material receiving end and the material pressing end.

6. A hollowing process according to claim 3, Features: The glue spraying port acting on the adhesive portion (112) is directly opposite to the guide surface layer (110), and the material taking roller (121), the glue spraying port and the support roller b (142) are arranged in sequence along the conveying direction of the guide surface layer (110).

7. A hollowing process according to claim 2, Features: The distance between any adjacent hollow portions (111) and the sticking portions (112) is L, and the circumference of the material taking roller is C=L, wherein: After the pick-up roller (121) sucks up the slice located in the hollow portion (111) and rotates one circle, the guide surface layer (110) moves a distance L along the conveying direction, and the pick-up roller (121) sticks the slice (310) to the adhesive portion (112) of the same guide layer unit (210).

8. A hollowing process according to claim 7, Features: The glue spraying port acting on the adhesive portion (112) is directly opposite to the guide surface layer (110), and the glue spraying port and the sheet moving assembly are arranged in sequence along the conveying direction of the guide surface layer (110).

9. A hollowing process according to claim 1, Features: The integrated component comprises a cutting roller (150), a supporting roller c (160) and a supporting roller d (170); the cutting roller (150) and the supporting roller c (160) are clamped on both sides of the guide surface layer (110); the cutting roller (150) is provided with a blade matching the shape of the guide layer unit (210); when the guide sheet layer moves between the cutting roller (150) and the supporting roller c (160), the guide layer unit (210) can be cut in sequence; the supporting roller c (160) sucks up the cut guide layer unit (210) and attaches it to the surface layer (180).

10. A sanitary napkin, wherein the axis extends in the front-to-back direction, and the sanitary napkin comprises a surface layer, a guide layer, and a surface layer (180) stacked in sequence from top to bottom, It is characterized in that The guide layer comprises a layer body (320) and a slice (310), wherein the slice (310) is taken out from the layer body (320) so that a liquid collecting hole is formed on the layer body (320), and the slice (310) is attached to the layer body (320) and arranged behind the liquid collecting hole at intervals along the central axis.

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