WO2019016831A1 - Device for sealing, shaping, and automating a process of making sanitary pads - Google Patents

Device for sealing, shaping, and automating a process of making sanitary pads Download PDF

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Publication number
WO2019016831A1
WO2019016831A1 PCT/IN2018/050464 IN2018050464W WO2019016831A1 WO 2019016831 A1 WO2019016831 A1 WO 2019016831A1 IN 2018050464 W IN2018050464 W IN 2018050464W WO 2019016831 A1 WO2019016831 A1 WO 2019016831A1
Authority
WO
WIPO (PCT)
Prior art keywords
link system
composite layer
core layer
side direction
pad
Prior art date
Application number
PCT/IN2018/050464
Other languages
French (fr)
Inventor
Kartik Mehta
Shivam CHAUBEY
Vijay Prakash
Roy RAJU
Original Assignee
Saral Design Solutions Private Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saral Design Solutions Private Limited filed Critical Saral Design Solutions Private Limited
Publication of WO2019016831A1 publication Critical patent/WO2019016831A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577Apparatus or processes for manufacturing
    • A61F13/15804Plant, e.g. involving several steps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577Apparatus or processes for manufacturing
    • A61F13/15707Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15739Sealing, e.g. involving cutting
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577Apparatus or processes for manufacturing
    • A61F2013/15821Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
    • A61F2013/15861Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding
    • A61F2013/1591Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding via adhesive
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F2013/16Sanitary towels; Means for supporting or fastening them

Definitions

  • the embodiments herein generally relate to sealing one or more layers of one or more sanitary pads, and, more particularly, to a device and a method for shaping and automating a process of making the one or more sanitary pads.
  • a sanitary napkin is a medium for absorbing body fluids.
  • a typical sanitary napkin includes adhesive layers, and release papers or adhesive tapes which allow the sanitary napkin to stick to a user's undergarment. The release papers protect the adhesive layers till the sanitary napkin is ready to be used.
  • a slip-and-cut applicator is typically including a cylindrical rotating vacuum anvil, a rotating cutting roller, and a transfer device.
  • an incoming web is fed at a relatively low speed along the vacuum face of the rotating anvil, which is moving at a relatively higher surface speed and upon which the incoming web is allowed to "slip".
  • a knife-edge mounted on the rotating cutting roller, cuts an off a segment of the incoming web against the anvil face. This knife-edge is preferably moving at a surface velocity similar to that of the anvil's surface. Once cut, the web segment is held by vacuum drawn through holes on the anvil's face as it is carried at the anvil's speed downstream to the transfer point where the web segment is transferred to the traveling web.
  • Typical vacuum rolls used in the prior art have rows of vacuum holes which are fed by cross-drilled ports, each being exposed to the source of vacuum by commutations, as the ports move into a zone of negative pressure in a stationary manifold. Such a configuration serves to apply vacuum sequentially to each successive row of holes.
  • a common problem associated with slip-and-cut applicators occurs at the point of cut.
  • a device for sealing, shaping and an automating a process of making one or more sanitary pads includes a pneumatic cylinder, a set of grippers, a sealing unit, a cutting module, and a pad puller unit.
  • the pneumatic cylinder moves the link system in a right-side direction for a predetermined distance to transfer a composite layer and core layer from a first position to a second position when a limit switch is triggered.
  • the set of grippers holds said composite layer and core layer when said link system is moved for said predetermined distance in said right side direction, wherein said pneumatic cylinder moves said link system in a left side direction up to said first position from said second position when the motion of said pneumatic cylinder is detected by a sensor.
  • the sealing unit that provides thermal bonding between said composite layer and core layer for a predetermined time period while moving said link system in said left side direction.
  • the cutting module that comprises a cutting roller and a cutting die, wherein said cutting module cuts, by rolling a cutting roller over a cutting die, said composite layer and core layer to obtain a sanitary napkin while moving said link system in said left side direction, a pad puller unit that pulls said sanitary napkin while moving said link system in said left side direction.
  • the device further includes a set of idle rollers.
  • the set of idle rollers are rolled over one or more sanitary pads that are obtained from said cutting die to move the one or more sanitary pads in the right side or forward direction, wherein said set of idle rollers comprises a first idler roller and a second idler roller.
  • the first idler roller (119A) moves the one or more sanitary pads from said cutting die (118) to a loop adjusting mechanism (120), wherein said second idler roller (119B) moves the one or more sanitary pads from the loop adjusting mechanism (120) to the pad puller unit (122), wherein said pad puller unit (122) pulls the one or more sanitary pads from said loop adjusting mechanism.
  • the limit switch (124) is triggered to (i) stop an operation or function of said pad puller unit (122), (ii) stop an operation or function of said link system (101) and (iii) start an operation or function of said sealing unit (112) depends upon movement of said composite layer and core layer.
  • the loop adjusting mechanism (120) synchronizes a motion between said link system (101) and said pad puller unit.
  • a method for sealing, shaping and automating a process of making a plurality of sanitary pads includes the steps of: (i) obtaining a composite layer and core layer from a storing area; (ii) triggering a limit switch when said composite layer and core layer moves to a first position; (iii) moving, using a pneumatic cylinder, a link system in a right side direction for a predetermined distance to transfer said composite layer and core layer from said first position to a second position when the limit switch is triggered; (iv) holding, by a set of grippers, said composite layer and core layer when said link system is moved for said predetermined distance in said right side direction; (v) moving, using said pneumatic cylinder, said link system in a left side direction up to said first position from said second position when the motion of said pneumatic cylinder is detected by a sensor; (vi) providing, using a sealing unit, thermal bonding between said composite layer and core layer for a predetermined time period while moving said link
  • rolling a set of idle rollers over one or more sanitary pads that are obtained from said cutting die to move the one or more sanitary pads in the right side or forward direction wherein said set of idle rollers comprises a first idler roller and a second idler roller.
  • the first idler roller moves the one or more sanitary pads from said cutting die to said loop adjusting mechanism
  • said second idler roller moves the one or more sanitary pads from the loop adjusting mechanism to the pad puller unit
  • said pad puller unit pulls the one or more sanitary pads from said loop adjusting mechanism.
  • FIG. 1A illustrates a side view of a device for sealing, shaping and an automating a process of making one or more sanitary pads according to the embodiment herein;
  • FIG. IB illustrates a perspective view of the device for sealing, shaping and an automating the process of making the one or more sanitary pads of FIG. 1A according to the embodiment herein;
  • FIG. 2 illustrates an exploded view of a link system of FIG. 1A according to an embodiment herein;
  • FIG. 3A illustrates an exploded view of a thermal sealing unit of FIG. 1A according to an embodiment herein;
  • FIGS. 3B-3C illustrate side and sectional views of the thermal sealing unit of FIG.3 A according to an embodiment herein;
  • FIG. 4 illustrates an exploded view of a loop adjusting mechanism of FIG. 1A according to an embodiment herein;
  • FIG. 5A illustrates a front view of a pad puller unit of FIG. 1 A according to an embodiment herein;
  • FIG. 5B illustrates an isometric view of the pad puller unit of FIG. 1A according to an embodiment herein;
  • FIGS. 6A-6C illustrate exploded views of a cutting die of FIG. IB according to the embodiment herein;
  • FIGS. 7A-7C illustrate exploded views of a sealing die of FIG. 3A according to the embodiment herein;
  • FIG. 8A-8B illustrate a method for sealing, shaping and automating a process of making one or more sanitary pads of FIG. 1 A according to an embodiment herein.
  • the embodiments herein achieve this by providing the device includes one or more composite layers, a sealing unit, and a cutter section.
  • the sealing unit includes a set of pneumatic cylinders that actuates one or more dies for applying one or more sheets on the one or more sanitary pads.
  • FIG. 1A illustrates a side view of a device for sealing, shaping and an automating a process of making one or more sanitary pads according to the embodiment herein.
  • the perspective view includes a composite layer and a core layer 102, a linear guider 104, a linear slider 106, a frame 108, a set of grippers 110A-B, a sealing unitl l2, a cutting modulel l4, a pneumatic cylinder 116, a set of idler rollers 119 A-B, a loop adjusting mechanisml20, a pad puller unit 122, a glue tank 124, a set of idlers 126&128, a loop adjuster 130, and a release paper storage area 132.
  • the linear guider 104 and the linear slider 106 provide a linear motion to a link system 101.
  • the linear guider 104 is stationary and the linear slider 106 is moved at the time of making sanitary pads.
  • the link system 101 is moved (i) a right side direction, or (ii) a left side direction in the device for a predetermined distance by the pneumatic cylinder 116.
  • the composite layer 102 includes a top layer, a bottom layer and the core layer.
  • the core layer is placed in a predefined gap between consecutive core layers.
  • the pneumatic cylinder 116 moves the link system 101 in the right side direction for the predetermined distance to transfer the composite layer and the core layer 102 from a first position to a second position.
  • the set of grippers 110A-B are pneumatic actuated grippers, provide grip to the composite layer and the core layer 102.
  • the pneumatic cylinder 116 moves the link system 101 in the left side direction to (i) provide thermal bonding between the composite layer and the core layer 102 by the sealing unit 112, (ii) cut the composite layer and the core layer 102 by the cutting module 114, and (iii) pull the sanitary napkin that is obtained from the cutting module 114.
  • the cutting module 114 provides a desired shape to the composite layer and the core layer 102 that is obtained from the sealing unit 112 using a cutting die.
  • the cutting die cuts the composite layer and the core layer 102 into sanitary pad shape by rolling a cutting roller over the cutting die when the link system 101 moves in the left side direction.
  • the cutting roller rolls over the cutting die to cut the composite layer and the core layer 102 using a set of pneumatic cylinders.
  • the set of idle rollers 119A-B are rolled over one or more sanitary pads that are obtained from the cutting die to move the one or more sanitary pads in the right side or forward direction.
  • a first idler roller 119A moves the one or more sanitary pads from the cutting die to the loop adjusting mechanism 120.
  • a second idler roller 119B moves the one or more sanitary pads from the loop adjusting mechanism 120 to the pad puller unit 122.
  • the pad puller unit 122 pulls the one or more sanitary pads from the loop adjusting mechanism 120 using a set of rollers.
  • the loop adjusting mechanism 120 includes a loop adjusting idler roller to provide and/or maintain a tension in the composite layer 102.
  • the device includes a sensor to detect a position of the composite and core layer 102.
  • the sensor is placed near to the pneumatic cylinder 116.
  • the sensor may detect the position of the link system 101.
  • a release paper is added with the previous composite layer.
  • a position of the release paper layer is on the top of the previous composite layer.
  • the release paper is added to composite layer from the storage area 124 through sandwich rollers assembly.
  • sandwich roller assembly is performed the function of sandwiching the release paper with composite layer and it only allow to move the web in the forward direction only.
  • positioning glue is applied on release paper by glue applicator and nozzle.
  • position of the glue applied by glue applicator on the release paper is controlled by sensors and movement of the link system 101.
  • link system 101 moves in right hand direction
  • release paper web with positioning glue applied on it along with the composite layer moves in forward direction through sandwich roller.
  • positive drive is provided to unwind the release paper from the storage area 124 and it is passed through the loop adjuster 130. Positive drive unwinds the release paper web from the storage area 124 till the movable roller of the loop adjuster 130 reaches its extreme bottom position.
  • FIG. IB illustrates a perspective view of the device for sealing, shaping and an automating the process of making the one or more sanitary pads of FIG. 1A according to the embodiment herein.
  • the right side view includes the composite layer and the core 102, the linear guider 104, the frame 108, the set of grippers 110A-B, the sealing unit 112, the cutting module 114, the pneumatic cylinder 116, a cutting roller 117, the cutting die 118, the set of idler rollers 119A-B, the loop adjusting mechanism 120, the pad puller unit 122 and a limit switch 124.
  • the link system 101 is moved in the right side direction for the predetermined distance to transfer the composite layer and the core layer 102 from the first position to the second position using the pneumatic cylinder 116 when the limit switch 124 is triggered.
  • the composite layer and the core layer 102 is hold by the set of grippers 110A-B when the link system 101 is moved for the predetermined distance when the limit switch 124 is triggered.
  • the link system 10 l is moved in the left side direction by the pneumatic cylinder 116 when the limit switch 124 is triggered.
  • FIG. 2 illustrates an exploded view of the link system lOlof FIG. 1A according to an embodiment herein.
  • the exploded view includes the linear slider 106, a set of link plates 202A-B, the set of pneumatic cylinders 204 A-B, the set of grippers 110A-B, and the cutting roller 117.
  • the set of link plates 202A-B connects the set of grippers 110A-B and the cutting module 114 to one assembly. The function of these components has been described above.
  • FIG. 3 A illustrates an exploded view of the sealing unit of FIG. 1 A according to an embodiment herein.
  • the exploded view includes a first die 302, a second die 304, a third die 306, a fourth die (not shown in FIG.
  • the first die 302 and the third die 306 are thermal sealing dies.
  • the second die 304 and the fourth die are nonthermal sealing dies.
  • the first die 302 enables sealing the top sheet and the bottom sheet of the sanitary pad.
  • the first die 302 does or doesn't heat in the core area of the composite layer core layer 102.
  • the sealing unit 112 includes a metal plate.
  • the metal plate may be isolated thermally from the first die 302, the second die 304, the third die 306 and the fourth die.
  • the metal plate acts as a supporting plate.
  • the second die 304 provides support to the first die 302 by the composite layer 102 rests over the second die 304.
  • the thermal bonding is obtained on the top layer and bottom layer when the set of sealing unit pneumatic cylinders 308A-B presses the metal plate.
  • the third die 306 provides the thermal bonding between the core layer and the top sheet of the sanitary pad.
  • the center block is mounted on center of the first die 302.
  • the third die 306 is adapted to apply a pattern on the top sheet of the sanitary pad.
  • the third die 306 adheres partially to the core layer due to heating properties of materials.
  • the fourth die is placed on the center of the first die 302.
  • the cartridge heater 310 is placed inside the first die 302 and the third die 306 to provide heat to the first die 302 and the third die 306.
  • the first die 302 pulls the composite layer 102 in upward direction.
  • the set of sealing unit grippers 312A-B removes the composite layer 102 from the first die 302 by pushing the composite layer 102 downwards.
  • the set of sealing unit linear bearings 314A-B and the set of sealing unit linear guiders 316A-B provide a single DOF (Degree of Freedom) to the first die 302 and the third die 306 there is an allowance between the set of sealing unit linear bearings 314A-B and the set of sealing unit linear guiders 316A-B, so that the sealing die 302 balance equally on the second die 304 (e.g. middle die) and the third die 306 on a fourth die 307 (e.g. center block die).
  • FIGS. 3B-3C illustrates side and sectional views of the sealing unit of FIG .3A according to an embodiment herein.
  • the side and sectional views include the first die 302, the second die 304, the third die 306, and the fourth die 307, and the set of sealing unit pneumatic cylinders 308A-N. The function of these components has been described above.
  • FIG. 4 illustrates an exploded view of the loop adjusting mechanism of FIG. 1A according to an embodiment herein.
  • the exploded view includes the loop adjusting idler roller 402, a linear bearing 404A-B and the limit switch 124.
  • the loop adjusting mechanism 120 synchronizes a motion between the link system 101 and the pad puller unit 122.
  • the loop adjusting idler roller 402 moves in vertical direction due to the linear bearing 404A-B and provides a tension in the one or more sanitary pads.
  • the loop adjusting idler roller 402 passes the one or more sanitary pads to the pad puller unit 122.
  • the limit switch 124 is triggered to (i) stop an operation or function of the pad puller unit 122, (ii) stop an operation or function of the link system 101 and (iii) start an operation or function of the sealing unit 112.1n one embodiment, the composite layer and the core 102 is travelled for the predetermined distance "D" and the core layer is sandwiched between the composite layer 102 rests over the third die 306. In one embodiment, there is an accumulation of the composite layer 102, the loop adjusting idler roller 402 is travelled in distance of half of the predetermined distance "D/2" in vertical downward direction due to gravity.
  • FIG. 5 A illustrates a front view of the pad puller unit of FIG. 1 A according to an embodiment herein.
  • the exploded view includes a motor 502, the set of rollers 504A&B and a set of shafts 506A&B.
  • the pad puller unit 122 pulls the one or more sanitary pads without damaging wing of the one or more sanitary pads.
  • the set of rollers 504A&B are mounted on the set of shafts 506A&B.
  • the set of rollers 504A&B can be adjusted transversely so that the set of rollers 504A&B can nip a waste material and pulls the one or more sanitary pads.
  • the composite layer and the core layer 102 is still in joint with left material at two points.
  • the waste material with the sanitary pad is pulled using four rollers that nip the waste material in the one or more sanitary pads.
  • the set of rollers 504A&B doesn't nip the sanitary pad else the set of rollers 504 A&B affect the quality of the one or more sanitary pads.
  • FIG. 5B illustrates an isometric view of the pad puller unit of FIG. 1A according to an embodiment herein.
  • the isometric view includes the motor 502, the set of rollers 504 A&B and the set of shafts 506A&B. The function of these components has been described above.
  • FIGS. 6A-6C illustrate exploded views of the cutting die 118 of FIG. IB according to the embodiment herein.
  • FIG. 6A depicts a perspective view of the cutting die 118 according to an embodiment herein.
  • FIG. 6B depicts a front view of the cutting die 118 according to an embodiment herein.
  • FIG. 6C depicts a side view of the cutting die 118 according to an embodiment herein. The function of this component have been described above.
  • FIGS. 7A-7C illustrate exploded views of the sealing die of FIG. 3A according to the embodiment herein.
  • FIG. 7A depicts a perspective view of the sealing die according to an embodiment herein.
  • FIG. 7B depicts a front view of the sealing die according to an embodiment herein.
  • FIG. 7C depicts a side view of the sealing die according to an embodiment herein. The function of this component have been described above.
  • FIG. 8A-8B are illustrate a method for sealing, shaping and automating a process of making one or more sanitary pads according to an embodiment herein.
  • a composite layer and a core layer 102 is obtained in a first position.
  • a limit switch 124 is triggered.
  • a link system 101 is moved in a right side direction for a predetermined distance to transfer the composite layer and the core layer 102 from a first position to a second position using a pneumatic cylinder 116 when the limit switch 124 is triggered.
  • the composite layer and the core layer 102 are hold by a set of grippers 110A-Bwhen the link system 101 is moved for the predetermined distance in the right side direction.
  • the link system 101 is moved in a left side direction up to the first position when the motion of the pneumatic cylinder 116 is detected by a sensor.
  • the sensor e.g. reed switch
  • the sensor detects the motion and gives a signal, which is used to activate the pneumatic cylinder 116 to move the link system 101 to the first position (i.e. at extreme left) from the second position (i.e. extreme right).
  • thermal bonding is provided between the composite layer and the core layer 102 using a sealing unit 112 for a predetermined time period while moving the link system 101 in the left side direction.
  • the composite layer and the core layer 102 is cut by rolling the cutting roller 117 over the cutting die 118 to obtain a sanitary napkin while moving the link system 101 in the left side direction.
  • the sanitary napkin is pulled by a pad puller unit 122 while moving the link system 101 in the left side direction.
  • the device for sealing, shaping, and automating a process of making sanitary pads enables high quality sanitary napkins with a very low cost.
  • the device enables sealing four layers of a sanitary pad, without adhesive in top sheet and core layer.

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Abstract

A device for sealing, shaping and an automating a process of making one or more sanitary pads is provided. The device includes a link system (101), a composite layer and a core layer (102), a linear guider (104), a linear slider (106), a frame (108), a set of grippers (110A-B), a sealing unit (112), a cutting module (114), a pneumatic cylinder (116), a set of idler rollers (119A-B), a loop adjusting mechanism (120), and a pad puller unit (122). When the link system (101) is moved in the left side direction, (i) the thermal bonding is provided between the composite layer and the core layer (102) using the sealing unit (112) when the limit switch (124) is triggered, (ii) the composite layer and the core layer (102) is cut by rolling the cutting roller (117) over the cutting die (118) to obtain the sanitary napkin when the limit switch (124) is triggered, and (iii) the sanitary napkin is pulled by the pad puller unit (122) from the cutting die (118).

Description

DEVICE FOR SEALING, SHAPING, AND AUTOMATING A PROCESS OF
MAKING SANITARY PADS
BACKGROUND
Technical Field
[0001] The embodiments herein generally relate to sealing one or more layers of one or more sanitary pads, and, more particularly, to a device and a method for shaping and automating a process of making the one or more sanitary pads.
Description of the Related Art
[0002] A sanitary napkin is a medium for absorbing body fluids. A typical sanitary napkin includes adhesive layers, and release papers or adhesive tapes which allow the sanitary napkin to stick to a user's undergarment. The release papers protect the adhesive layers till the sanitary napkin is ready to be used. When manufacturing hygiene products, such as baby diapers, adult diapers, disposable undergarments, incontinence devices, sanitary napkins and the like, a common method of applying discrete pieces of one web to another is by use of a slip-and-cut applicator. A slip-and-cut applicator is typically including a cylindrical rotating vacuum anvil, a rotating cutting roller, and a transfer device. In typical applications, an incoming web is fed at a relatively low speed along the vacuum face of the rotating anvil, which is moving at a relatively higher surface speed and upon which the incoming web is allowed to "slip". A knife-edge, mounted on the rotating cutting roller, cuts an off a segment of the incoming web against the anvil face. This knife-edge is preferably moving at a surface velocity similar to that of the anvil's surface. Once cut, the web segment is held by vacuum drawn through holes on the anvil's face as it is carried at the anvil's speed downstream to the transfer point where the web segment is transferred to the traveling web. [0003] Typical vacuum rolls used in the prior art have rows of vacuum holes which are fed by cross-drilled ports, each being exposed to the source of vacuum by commutations, as the ports move into a zone of negative pressure in a stationary manifold. Such a configuration serves to apply vacuum sequentially to each successive row of holes. A common problem associated with slip-and-cut applicators occurs at the point of cut.
[0004] The current methods used in high speed line are very sophisticated and consume high energy. The current methods involve use of Rotary sealers which include a slip ring arrangement for sealing process, a specialized rotary cutting die, a rotary embossing unit, vacuum conveyors, and other automation equipment's. The space required for the mechanisms is higher which makes the entire machine very bulky. Accordingly, there remains a need for an improved device and process for sealing, shaping of the sanitary pads with low cost automation.
SUMMARY
[0005] In view of foregoing, a device for sealing, shaping and an automating a process of making one or more sanitary pads is provided. The device includes a pneumatic cylinder, a set of grippers, a sealing unit, a cutting module, and a pad puller unit. The pneumatic cylinder moves the link system in a right-side direction for a predetermined distance to transfer a composite layer and core layer from a first position to a second position when a limit switch is triggered. The set of grippers holds said composite layer and core layer when said link system is moved for said predetermined distance in said right side direction, wherein said pneumatic cylinder moves said link system in a left side direction up to said first position from said second position when the motion of said pneumatic cylinder is detected by a sensor. The sealing unit that provides thermal bonding between said composite layer and core layer for a predetermined time period while moving said link system in said left side direction. The cutting module that comprises a cutting roller and a cutting die, wherein said cutting module cuts, by rolling a cutting roller over a cutting die, said composite layer and core layer to obtain a sanitary napkin while moving said link system in said left side direction, a pad puller unit that pulls said sanitary napkin while moving said link system in said left side direction.
[0006] The device further includes a set of idle rollers. The set of idle rollers are rolled over one or more sanitary pads that are obtained from said cutting die to move the one or more sanitary pads in the right side or forward direction, wherein said set of idle rollers comprises a first idler roller and a second idler roller.
[0007] The first idler roller (119A) moves the one or more sanitary pads from said cutting die (118) to a loop adjusting mechanism (120), wherein said second idler roller (119B) moves the one or more sanitary pads from the loop adjusting mechanism (120) to the pad puller unit (122), wherein said pad puller unit (122) pulls the one or more sanitary pads from said loop adjusting mechanism.
[0008] The limit switch (124) is triggered to (i) stop an operation or function of said pad puller unit (122), (ii) stop an operation or function of said link system (101) and (iii) start an operation or function of said sealing unit (112) depends upon movement of said composite layer and core layer.
[0009] The loop adjusting mechanism (120) synchronizes a motion between said link system (101) and said pad puller unit.
[0010] In another aspect, a method for sealing, shaping and automating a process of making a plurality of sanitary pads is provided. The method includes the steps of: (i) obtaining a composite layer and core layer from a storing area; (ii) triggering a limit switch when said composite layer and core layer moves to a first position; (iii) moving, using a pneumatic cylinder, a link system in a right side direction for a predetermined distance to transfer said composite layer and core layer from said first position to a second position when the limit switch is triggered; (iv) holding, by a set of grippers, said composite layer and core layer when said link system is moved for said predetermined distance in said right side direction; (v) moving, using said pneumatic cylinder, said link system in a left side direction up to said first position from said second position when the motion of said pneumatic cylinder is detected by a sensor; (vi) providing, using a sealing unit, thermal bonding between said composite layer and core layer for a predetermined time period while moving said link system in said left side direction; (vii) cutting, by rolling a cutting roller over a cutting die, said composite layer and core layer to obtain a sanitary napkin while moving said link system in said left side direction; (viii) pulling, by a pad puller unit said sanitary napkin while moving said link system in said left side direction. In another embodiment, rolling a set of idle rollers over one or more sanitary pads that are obtained from said cutting die to move the one or more sanitary pads in the right side or forward direction, wherein said set of idle rollers comprises a first idler roller and a second idler roller.
[0011] In one embodiment, the first idler roller moves the one or more sanitary pads from said cutting die to said loop adjusting mechanism, wherein said second idler roller moves the one or more sanitary pads from the loop adjusting mechanism to the pad puller unit, wherein said pad puller unit pulls the one or more sanitary pads from said loop adjusting mechanism. [0012] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating preferred embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The embodiments herein will be better understood from the following detailed description with reference to the drawings, in which:
[0014] FIG. 1A illustrates a side view of a device for sealing, shaping and an automating a process of making one or more sanitary pads according to the embodiment herein;
[0015] FIG. IB illustrates a perspective view of the device for sealing, shaping and an automating the process of making the one or more sanitary pads of FIG. 1A according to the embodiment herein;
[0016] FIG. 2 illustrates an exploded view of a link system of FIG. 1A according to an embodiment herein;
[0017] FIG. 3A illustrates an exploded view of a thermal sealing unit of FIG. 1A according to an embodiment herein;
[0018] FIGS. 3B-3C illustrate side and sectional views of the thermal sealing unit of FIG.3 A according to an embodiment herein; [0019] FIG. 4 illustrates an exploded view of a loop adjusting mechanism of FIG. 1A according to an embodiment herein;
[0020] FIG. 5A illustrates a front view of a pad puller unit of FIG. 1 A according to an embodiment herein;
[0021] FIG. 5B illustrates an isometric view of the pad puller unit of FIG. 1A according to an embodiment herein;
[0022] FIGS. 6A-6C illustrate exploded views of a cutting die of FIG. IB according to the embodiment herein;
[0023] FIGS. 7A-7C illustrate exploded views of a sealing die of FIG. 3A according to the embodiment herein; and
[0024] FIG. 8A-8B illustrate a method for sealing, shaping and automating a process of making one or more sanitary pads of FIG. 1 A according to an embodiment herein.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0025] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein. [0026] As mentioned earlier, there remains a need for a device for sealing, shaping and automating a process of making one or more sanitary pads. The embodiments herein achieve this by providing the device includes one or more composite layers, a sealing unit, and a cutter section. The sealing unit includes a set of pneumatic cylinders that actuates one or more dies for applying one or more sheets on the one or more sanitary pads. Referring now to the drawings and more particularly to FIGS. 1A through 8B, where similar reference characters denote corresponding features consistently throughout the figures, there are shown preferred embodiments.
[0027] FIG. 1A illustrates a side view of a device for sealing, shaping and an automating a process of making one or more sanitary pads according to the embodiment herein. The perspective view includes a composite layer and a core layer 102, a linear guider 104, a linear slider 106, a frame 108, a set of grippers 110A-B, a sealing unitl l2, a cutting modulel l4, a pneumatic cylinder 116, a set of idler rollers 119 A-B, a loop adjusting mechanisml20, a pad puller unit 122, a glue tank 124, a set of idlers 126&128, a loop adjuster 130, and a release paper storage area 132. The linear guider 104 and the linear slider 106 provide a linear motion to a link system 101. The linear guider 104 is stationary and the linear slider 106 is moved at the time of making sanitary pads. In one embodiment, the link system 101 is moved (i) a right side direction, or (ii) a left side direction in the device for a predetermined distance by the pneumatic cylinder 116. In one embodiment, the composite layer 102 includes a top layer, a bottom layer and the core layer. In another embodiment, the core layer is placed in a predefined gap between consecutive core layers.
[0028] The pneumatic cylinder 116 moves the link system 101 in the right side direction for the predetermined distance to transfer the composite layer and the core layer 102 from a first position to a second position. The set of grippers 110A-B, are pneumatic actuated grippers, provide grip to the composite layer and the core layer 102. The pneumatic cylinder 116 moves the link system 101 in the left side direction to (i) provide thermal bonding between the composite layer and the core layer 102 by the sealing unit 112, (ii) cut the composite layer and the core layer 102 by the cutting module 114, and (iii) pull the sanitary napkin that is obtained from the cutting module 114.
[0029] The cutting module 114 provides a desired shape to the composite layer and the core layer 102 that is obtained from the sealing unit 112 using a cutting die. The cutting die cuts the composite layer and the core layer 102 into sanitary pad shape by rolling a cutting roller over the cutting die when the link system 101 moves in the left side direction. In one embodiment, the cutting roller rolls over the cutting die to cut the composite layer and the core layer 102 using a set of pneumatic cylinders.
[0030] The set of idle rollers 119A-B are rolled over one or more sanitary pads that are obtained from the cutting die to move the one or more sanitary pads in the right side or forward direction. In one embodiment, a first idler roller 119A moves the one or more sanitary pads from the cutting die to the loop adjusting mechanism 120. In another embodiment, a second idler roller 119B moves the one or more sanitary pads from the loop adjusting mechanism 120 to the pad puller unit 122. The pad puller unit 122 pulls the one or more sanitary pads from the loop adjusting mechanism 120 using a set of rollers. The loop adjusting mechanism 120 includes a loop adjusting idler roller to provide and/or maintain a tension in the composite layer 102.
[0031] In one embodiment, the device includes a sensor to detect a position of the composite and core layer 102. The sensor is placed near to the pneumatic cylinder 116. The sensor may detect the position of the link system 101. In one embodiment, in the current process a release paper is added with the previous composite layer. A position of the release paper layer is on the top of the previous composite layer. The release paper is added to composite layer from the storage area 124 through sandwich rollers assembly. In one embodiment, sandwich roller assembly is performed the function of sandwiching the release paper with composite layer and it only allow to move the web in the forward direction only. In another embodiment, before added to the composite layer, positioning glue is applied on release paper by glue applicator and nozzle.
[0032] In another embodiment, position of the glue applied by glue applicator on the release paper is controlled by sensors and movement of the link system 101. When the link system 101 moves in right hand direction, release paper web with positioning glue applied on it along with the composite layer moves in forward direction through sandwich roller. In another embodiment, positive drive is provided to unwind the release paper from the storage area 124 and it is passed through the loop adjuster 130. Positive drive unwinds the release paper web from the storage area 124 till the movable roller of the loop adjuster 130 reaches its extreme bottom position.
[0033] In another embodiment, when web passed from loop adjuster 130 to sandwich roller it is in contact with the nozzle tip which applies the glue on release paper in strip from. In yet another embodiment, release paper web passed through idler rollers which helps in maintaining contact of web with nozzle tip and maintaining tension in the web.
[0034] FIG. IB illustrates a perspective view of the device for sealing, shaping and an automating the process of making the one or more sanitary pads of FIG. 1A according to the embodiment herein. The right side view includes the composite layer and the core 102, the linear guider 104, the frame 108, the set of grippers 110A-B, the sealing unit 112, the cutting module 114, the pneumatic cylinder 116, a cutting roller 117, the cutting die 118, the set of idler rollers 119A-B, the loop adjusting mechanism 120, the pad puller unit 122 and a limit switch 124. The link system 101 is moved in the right side direction for the predetermined distance to transfer the composite layer and the core layer 102 from the first position to the second position using the pneumatic cylinder 116 when the limit switch 124 is triggered.
[0035] The composite layer and the core layer 102 is hold by the set of grippers 110A-B when the link system 101 is moved for the predetermined distance when the limit switch 124 is triggered. The link system 10 lis moved in the left side direction by the pneumatic cylinder 116 when the limit switch 124 is triggered. When the link system 10 lis moved in the left side direction, (i) the thermal bonding is provided between the composite layer and the core layer 102 using the sealing unit 112 when the limit switch 124 is triggered, (ii) the composite layer and the core layer 102 is cut by rolling the cutting roller 117 over the cutting die 118 to obtain the sanitary napkin when the limit switch 124 is triggered, and (iii) the sanitary napkin is pulled by the pad puller unit 122 from the cutting die 118.
[0036] FIG. 2 illustrates an exploded view of the link system lOlof FIG. 1A according to an embodiment herein. The exploded view includes the linear slider 106, a set of link plates 202A-B, the set of pneumatic cylinders 204 A-B, the set of grippers 110A-B, and the cutting roller 117. The set of link plates 202A-Bconnects the set of grippers 110A-B and the cutting module 114 to one assembly. The function of these components has been described above. [0037] FIG. 3 A illustrates an exploded view of the sealing unit of FIG. 1 A according to an embodiment herein. The exploded view includes a first die 302, a second die 304, a third die 306, a fourth die (not shown in FIG. 3A), a set of sealing unit pneumatic cylinders 308 A-B, a cartridge heater310, a set of sealing unit grippers 312A-B and a set of sealing unit linear bearings 314A-B, and a set of sealing unit linear guiders 316A-B. The first die 302 and the third die 306 are thermal sealing dies. The second die 304 and the fourth die are nonthermal sealing dies. The first die 302 enables sealing the top sheet and the bottom sheet of the sanitary pad. The first die 302 does or doesn't heat in the core area of the composite layer core layer 102.
[0038] In one embodiment, the sealing unit 112 includes a metal plate. In one embodiment, the metal plate may be isolated thermally from the first die 302, the second die 304, the third die 306 and the fourth die. In one embodiment, the metal plate acts as a supporting plate. The second die 304 provides support to the first die 302 by the composite layer 102 rests over the second die 304. The thermal bonding is obtained on the top layer and bottom layer when the set of sealing unit pneumatic cylinders 308A-B presses the metal plate. The third die 306 provides the thermal bonding between the core layer and the top sheet of the sanitary pad.
[0039] In one embodiment, the center block is mounted on center of the first die 302. The third die 306 is adapted to apply a pattern on the top sheet of the sanitary pad. The third die 306 adheres partially to the core layer due to heating properties of materials. The fourth die is placed on the center of the first die 302. The cartridge heater 310 is placed inside the first die 302 and the third die 306 to provide heat to the first die 302 and the third die 306. In one embodiment, after sealing the top layer and the bottom layer of the composite layer 102, there is a tendency that the composite layer 102 sticks to the first die 302 so while moving to its initial position, the first die 302 pulls the composite layer 102 in upward direction.
[0040] The set of sealing unit grippers 312A-B removes the composite layer 102 from the first die 302 by pushing the composite layer 102 downwards. The set of sealing unit linear bearings 314A-B and the set of sealing unit linear guiders 316A-B provide a single DOF (Degree of Freedom) to the first die 302 and the third die 306 there is an allowance between the set of sealing unit linear bearings 314A-B and the set of sealing unit linear guiders 316A-B, so that the sealing die 302 balance equally on the second die 304 (e.g. middle die) and the third die 306 on a fourth die 307 (e.g. center block die).
[0041] FIGS. 3B-3C illustrates side and sectional views of the sealing unit of FIG .3A according to an embodiment herein. The side and sectional views include the first die 302, the second die 304, the third die 306, and the fourth die 307, and the set of sealing unit pneumatic cylinders 308A-N. The function of these components has been described above.
[0042] FIG. 4 illustrates an exploded view of the loop adjusting mechanism of FIG. 1A according to an embodiment herein. The exploded view includes the loop adjusting idler roller 402, a linear bearing 404A-B and the limit switch 124. The loop adjusting mechanism 120 synchronizes a motion between the link system 101 and the pad puller unit 122. The loop adjusting idler roller 402 moves in vertical direction due to the linear bearing 404A-B and provides a tension in the one or more sanitary pads. The loop adjusting idler roller 402 passes the one or more sanitary pads to the pad puller unit 122. The limit switch 124 is triggered to (i) stop an operation or function of the pad puller unit 122, (ii) stop an operation or function of the link system 101 and (iii) start an operation or function of the sealing unit 112.1n one embodiment, the composite layer and the core 102 is travelled for the predetermined distance "D" and the core layer is sandwiched between the composite layer 102 rests over the third die 306. In one embodiment, there is an accumulation of the composite layer 102, the loop adjusting idler roller 402 is travelled in distance of half of the predetermined distance "D/2" in vertical downward direction due to gravity.
[0043] FIG. 5 A illustrates a front view of the pad puller unit of FIG. 1 A according to an embodiment herein. The exploded view includes a motor 502, the set of rollers 504A&B and a set of shafts 506A&B. The pad puller unit 122 pulls the one or more sanitary pads without damaging wing of the one or more sanitary pads. The set of rollers 504A&B are mounted on the set of shafts 506A&B. The set of rollers 504A&B can be adjusted transversely so that the set of rollers 504A&B can nip a waste material and pulls the one or more sanitary pads. In one embodiment, after cutting the composite layer and the core layer 102 into sanitary pad shape, the composite layer and the core layer 102 is still in joint with left material at two points. In another embodiment, the waste material with the sanitary pad is pulled using four rollers that nip the waste material in the one or more sanitary pads. In one embodiment, the set of rollers 504A&B doesn't nip the sanitary pad else the set of rollers 504 A&B affect the quality of the one or more sanitary pads.
[0044] FIG. 5B illustrates an isometric view of the pad puller unit of FIG. 1A according to an embodiment herein. The isometric view includes the motor 502, the set of rollers 504 A&B and the set of shafts 506A&B. The function of these components has been described above.
[0045] FIGS. 6A-6C illustrate exploded views of the cutting die 118 of FIG. IB according to the embodiment herein. FIG. 6A depicts a perspective view of the cutting die 118 according to an embodiment herein. FIG. 6B depicts a front view of the cutting die 118 according to an embodiment herein. FIG. 6C depicts a side view of the cutting die 118 according to an embodiment herein. The function of this component have been described above.
[0046] FIGS. 7A-7C illustrate exploded views of the sealing die of FIG. 3A according to the embodiment herein. FIG. 7A depicts a perspective view of the sealing die according to an embodiment herein. FIG. 7B depicts a front view of the sealing die according to an embodiment herein. FIG. 7C depicts a side view of the sealing die according to an embodiment herein. The function of this component have been described above.
[0047] FIG. 8A-8B are illustrate a method for sealing, shaping and automating a process of making one or more sanitary pads according to an embodiment herein. At step 802, a composite layer and a core layer 102 is obtained in a first position. At step 804, a limit switch 124 is triggered. At step 806, a link system 101 is moved in a right side direction for a predetermined distance to transfer the composite layer and the core layer 102 from a first position to a second position using a pneumatic cylinder 116 when the limit switch 124 is triggered. At step 808, the composite layer and the core layer 102 are hold by a set of grippers 110A-Bwhen the link system 101 is moved for the predetermined distance in the right side direction. At step 810, the link system 101 is moved in a left side direction up to the first position when the motion of the pneumatic cylinder 116 is detected by a sensor. The sensor (e.g. reed switch) is used to detect the motion of the pneumatic cylinder 116. When the link system 101 moves at extreme right position, the sensor detects the motion and gives a signal, which is used to activate the pneumatic cylinder 116 to move the link system 101 to the first position (i.e. at extreme left) from the second position (i.e. extreme right). At step 812, thermal bonding is provided between the composite layer and the core layer 102 using a sealing unit 112 for a predetermined time period while moving the link system 101 in the left side direction. At step 814, the composite layer and the core layer 102 is cut by rolling the cutting roller 117 over the cutting die 118 to obtain a sanitary napkin while moving the link system 101 in the left side direction. At step 816, the sanitary napkin is pulled by a pad puller unit 122 while moving the link system 101 in the left side direction.
[0048] The device for sealing, shaping, and automating a process of making sanitary pads enables high quality sanitary napkins with a very low cost. The device enables sealing four layers of a sanitary pad, without adhesive in top sheet and core layer.
[0049] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the appended claims.

Claims

CLAIMS I/We Claim:
1. A device (100) for sealing, shaping and an automating a process of making one or more sanitary pads, wherein said device (100) comprises
a pneumatic cylinder (116) that moves said link system (101) in a right side direction for a predetermined distance to transfer a composite layer and core layer (102) from a first position to a second position when a limit switch (124) is triggered; a set of grippers (110A-B) that holds said composite layer and core layer (102) when said link system (101) is moved for said predetermined distance in said right side direction, wherein said pneumatic cylinder (116) moves said link system (101) in a left side direction up to said first position from said second position when the motion of said pneumatic cylinder (116) is detected by a sensor;
characterized in that,
a sealing unit (112) that provides thermal bonding between said composite layer and core layer (102) for a predetermined time period while moving said link system (101) in said left side direction;
a cutting module (114) that comprises a cutting roller (117) and a cutting die (118), wherein said cutting module (114) cuts, by rolling a cutting roller (117) over a cutting die (118), said composite layer and core layer (102) to obtain a sanitary napkin while moving said link system (101) in said left side direction; and
a pad puller unit (122) that pulls said sanitary napkin while moving said link system (101) in said left side direction.
2. The device (100) as claimed in claim 1, comprises
a set of idle rollers (119A-B), wherein said set of idle rollers (119A-B) are rolled over one or more sanitary pads that are obtained from said cutting die (118) to move the one or more sanitary pads in the right side or forward direction, wherein said set of idle rollers (119A-B) comprises a first idler roller (119A) and a second idler roller (119B).
3. The device (100) as claimed in claim 2, wherein said first idler roller (119 A) moves the one or more sanitary pads from said cutting die (118) to a loop adjusting mechanism (120), wherein said second idler roller (119B) moves the one or more sanitary pads from the loop adjusting mechanism (120) to the pad puller unit (122), wherein said pad puller unit (122) pulls the one or more sanitary pads from said loop adjusting mechanism (120).
4. The device (100) as claimed in claim 1, comprises
a glue applicator that is adapted to apply glue on release paper, wherein a position of the glue applied by the glue applicator on the release paper is controlled by sensors and movement of the link system (101), wherein when the link system (101) moves in right hand direction, a release paper web with positioning glue applied on the release paper along with the composite layer moves in forward direction through sandwich roller.
5. The device (100) as claimed in claim 1, wherein said limit switch (124) is triggered to (i) stop an operation or function of said pad puller unit (122), (ii) stop an operation or function of said link system (101) and (iii) start an operation or function of said sealing unit (112) depends upon movement of said composite layer and core layer (102).
6. The device (100) as claimed in claim 3, wherein said loop adjusting mechanism (120) synchronizes a motion between said link system (101) and said pad puller unit (122).
7. A method for sealing, shaping and automating a process of making a plurality of sanitary pads, said method comprising:
obtaining a composite layer and core layer (102) from a storing area;
triggering a limit switch (124) when said composite layer and core layer (102) moves to a first position;
moving, using a pneumatic cylinder (116), a link system (101) in a right side direction for a predetermined distance to transfer said composite layer and core layer (102) from said first position to a second position when the limit switch (124) is triggered;
holding, by a set of grippers (110A-B), said composite layer and core layer (102) when said link system (101) is moved for said predetermined distance in said right side direction; moving, using said pneumatic cylinder (116), said link system (101) in a left side direction up to said first position from said second position when the motion of said pneumatic cylinder (116) is detected by a sensor;
providing, using a sealing unit (112), thermal bonding between said composite layer and core layer (102) for a predetermined time period while moving said link system (101) in said left side direction;
cutting, by rolling a cutting roller (117) over a cutting die (118), said composite layer and core layer (102) to obtain a sanitary napkin while moving said link system (101) in said left side direction; and
pulling, by a pad puller unit (122), said sanitary napkin while moving said link system (101) in said left side direction.
8. The method as claimed in claim 7, comprises
rolling a set of idle rollers (119A-B) over one or more sanitary pads that are obtained from said cutting die ( 118) to move the one or more sanitary pads in the right side or forward direction, wherein said set of idle rollers (119A-B) comprises a first idler roller (119A) and a second idler roller (119B).
9. The method as claimed in claim 7, wherein said first idler roller (119 A) moves the one or more sanitary pads from said cutting die (118) to said loop adjusting mechanism (120), wherein said second idler roller (119B) moves the one or more sanitary pads from the loop adjusting mechanism (120) to the pad puller unit (122), wherein said pad puller unit (122) pulls the one or more sanitary pads from said loop adjusting mechanism (120).
10. The method as claimed in claim 7, wherein said limit switch (124) is triggered to (i) stop an operation or function of said pad puller unit (122), (ii) stop an operation or function of said link system (101) and (iii) start an operation or function of said sealing unit (112) depends upon movement of said composite layer and core layer (102).
PCT/IN2018/050464 2017-07-19 2018-07-17 Device for sealing, shaping, and automating a process of making sanitary pads WO2019016831A1 (en)

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CN112790913A (en) * 2020-12-30 2021-05-14 广州市智勋电子商务有限公司 Edge sealing device for sanitary towel
CN113069276A (en) * 2021-03-30 2021-07-06 福建省明辉机械制造有限公司 Elastic waistline forming equipment for finished trousers
CN115281937A (en) * 2022-07-28 2022-11-04 佛山市顺德区州福慈鑫无纺布有限公司 Production process of sanitary towel chip containing bamboo leaf flavone

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CN112790913A (en) * 2020-12-30 2021-05-14 广州市智勋电子商务有限公司 Edge sealing device for sanitary towel
CN113069276A (en) * 2021-03-30 2021-07-06 福建省明辉机械制造有限公司 Elastic waistline forming equipment for finished trousers
CN113069276B (en) * 2021-03-30 2022-05-13 福建省明辉机械制造有限公司 Elastic waistline forming equipment for finished trousers
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