CN113907955A

CN113907955A - Sanitary towel preparation method and sanitary towel

Info

Publication number: CN113907955A
Application number: CN202111201432.5A
Authority: CN
Inventors: 陈爱华
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-01-11

Abstract

The invention discloses a sanitary towel preparation method which comprises the steps of respectively preparing a positioning drainage part and a liquid absorption layer; the positioning drainage part is connected to the surface of the liquid absorbing layer; the liquid absorbing layer is arranged on the bottom layer; the surface layer covers the positioning drainage part and the liquid absorption layer; carrying out mould pressing on the bottom layer and the surface layer so that the bottom layer is connected with the periphery of the surface layer; wherein the step of preparing the liquid absorption layer comprises respectively preparing a dust-free coating part and a liquid absorption part; the liquid absorption part is arranged in the coating space of the dust-free coating part; the invention also discloses a sanitary towel. This application has avoided the influence of aqueous glue, has guaranteed the imbibition effect, and through location drainage portion and imbibition layer realize the drainage to physiological liquid, damps and shunts, has further guaranteed the side leakage effect of preventing of sanitary towel for sanitary towel reaches the abundant absorption to physiological liquid.

Description

Sanitary towel preparation method and sanitary towel

Technical Field

The invention relates to the technical field of sanitary towels, in particular to a sanitary towel and a preparation method thereof.

Background

The sanitary towel is a common female physiological product, and the existing sanitary towel is of a hierarchical structure. When the sanitary towel is prepared, the common practice in the industry at present is to adhere all levels of the sanitary towel layer by layer through water-based glue, wherein the water absorption factor paper mainly playing a role in absorbing liquid is formed by spraying the water absorption factor on wood pulp paper, and then the water absorption factor paper is fixed in the sanitary towel through superposition of the water-based glue, because the influence of the water-based glue on the integrally prepared sanitary towel has an unsatisfactory water absorption effect, the problem of side leakage can be caused, and the sanitary towel cannot fully absorb physiological liquid.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a sanitary towel and a preparation method thereof.

The invention discloses a preparation method of a sanitary towel, which comprises the following steps:

respectively preparing a positioning drainage part and a liquid absorption layer;

the positioning drainage part is connected to the surface of the liquid absorbing layer;

the liquid absorbing layer is arranged on the bottom layer;

the surface layer covers the positioning drainage part and the liquid absorption layer;

carrying out mould pressing on the bottom layer and the surface layer so that the bottom layer is connected with the periphery of the surface layer;

obtaining the sanitary towel;

wherein, preparing the liquid absorbing layer comprises:

respectively preparing a dust-free coating part and a liquid absorbing part;

the liquid absorbing part is arranged in the coating space of the dust-free coating part.

According to an embodiment of the present invention, before obtaining the sanitary napkin, the method further comprises the following steps:

the prepared functional supporting layer is arranged on the bottom layer.

According to an embodiment of the present invention, preparing the positioning drain includes:

forming a drainage sleeve;

filling a drainage sleeve with a drainage material;

sealing two ends of the drainage sleeve;

obtaining a positioning drainage part.

According to an embodiment of the invention, forming the drainage sleeve comprises:

two hot air cotton strips are correspondingly stacked to form a stacking group;

ultrasonic welding is carried out on two side edges of the stacking group along the length direction of the stacking group;

forming a drainage sleeve.

integrally forming a shaping drainage strip by using a flexible material;

obtaining a positioning drainage part.

According to an embodiment of the present invention, the step of preparing the functional support layer on the bottom layer comprises:

preparing a support body;

the first adhesive layer and the two second adhesive layers are respectively arranged on one surface of the support body; the two second adhesive layers are respectively positioned on two opposite sides of the first adhesive layer; a space is arranged between the first adhesive layer and the second adhesive layer;

the other surface of the support body is arranged on the bottom layer.

The utility model provides a sanitary towel includes location drainage portion, imbibition layer, bottom and surface course, and the bottom is located to the imbibition layer, and the surface course that the imbibition layer was located to location drainage portion covers in imbibition layer and location drainage portion, and the imbibition layer includes dustless cladding portion and imbibition portion, and the imbibition portion is placed in the cladding space of dustless cladding portion.

According to one embodiment of the invention, the positioning drainage part comprises a drainage sleeve and drainage material filled in the drainage sleeve.

According to one embodiment of the invention, the sizing drainage strip is integrally formed of a flexible material.

According to an embodiment of the present invention, the substrate further includes a functional supporting layer disposed on the bottom layer.

The beneficial effect of this application lies in: when the sanitary towel is prepared, the lotion part mainly playing a role of imbibition is arranged in a coating mode, the surface layer and the bottom layer are also in a coating mode of peripheral connection, the influence of water-based glue is avoided integrally, the imbibition effect is ensured, the lotion part is also coated and supported by the dust-free coating part, and then the positioning drainage part is connected to the surface of the imbibition layer; and the sanitary towel can be stably supported by the functional supporting layer, so that the sanitary towel maintains the shape of positioning drainage, and the positioning drainage and liquid absorption effects of the sanitary towel are ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a flow chart of a method of making a sanitary napkin in an example embodiment;

FIG. 2 is a schematic structural view of a bottom layer, a liquid absorbing layer and a positioning drainage part in the embodiment;

FIG. 3 is a schematic structural view of a bottom layer and a top layer in the embodiment;

FIG. 4 is a schematic structural view of a dust-free coating part and a liquid absorbing part in the embodiment;

FIG. 5 is a schematic structural view of a liquid absorbing layer and a positioning drainage part in the embodiment;

FIG. 6 is a schematic structural view of the sizing drainage part in the embodiment;

FIG. 7 is a schematic view of the drainage sleeve and drainage material in an embodiment;

FIG. 8 is another structural diagram of the sizing drainage part in the embodiment;

FIG. 9 is another flow chart of a method for manufacturing a sanitary napkin in the example;

FIG. 10 is a schematic structural diagram of a functional support layer in an embodiment;

fig. 11 is a diagram showing the fitting state of the functional support layer and the bottom layer.

In the attached drawings, 1-a shaping drainage part; 11-a drainage sleeve; 12-a drainage material; 13-shaping the drainage strip; 2-liquid absorption layer; 21-dust-free coating part; 22-a liquid suction part; 3-a bottom layer; 4-surface layer; 5-a diversion trench; 6-protecting wing surrounding edges; 100-a functional support layer; 101. a support body; 102. a first glue layer; 103. a second adhesive layer; 110. and (4) texture.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, for the purpose of simplifying the drawings, certain well-known and conventional structures and components are shown in the drawings in a simplified schematic manner.

It should be noted that all the directional indications such as up, down, left, right, front and rear … … in the embodiment of the present invention are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to order or sequence, and do not limit the present invention, but only distinguish the elements or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:

example one

Referring to fig. 1 to 5, fig. 1 is a flow chart of a sanitary napkin manufacturing method in an embodiment, fig. 2 is a schematic structural diagram of a bottom layer, a liquid absorbing layer and a positioning drainage portion in the embodiment, fig. 3 is a schematic structural diagram of a bottom layer and a surface layer in the embodiment, fig. 4 is a schematic structural diagram of a dust-free coating portion and a liquid absorbing portion in the embodiment, and fig. 5 is a schematic structural diagram of a liquid absorbing layer and a positioning drainage portion in the embodiment. The preparation method of the sanitary napkin in the embodiment comprises the following steps:

s1, preparing a positioning drainage part 1 and a liquid absorption layer 2 respectively;

s2, connecting the positioning drainage part 1 to the surface of the liquid absorbent layer 2;

s3, placing the liquid absorbing layer 2 on the bottom layer 3;

s4, covering the positioning drainage part 1 and the liquid absorption layer 2 with the surface layer 4;

s5, carrying out die pressing on the bottom layer 3 and the surface layer 4 to enable the bottom layer 3 to be connected with the periphery of the surface layer 4;

and S7, obtaining the sanitary towel.

Wherein, in step S1, the preparing the liquid absorbent layer 2 includes:

s11, preparing a dust-free coating part 21 and a liquid absorbing part 22 respectively;

s12, liquid absorbing part 22 is placed in the covering space of dust-free covering part 21.

When preparing sanitary towel, lotion portion 22 to mainly playing the imbibition is the mode setting of cladding, surface course 4 and bottom 3 are the cladding mode of periphery connection also, the influence of aqueous glue has wholly been avoided, the imbibition effect has been guaranteed, and still carry out the cladding through dustless cladding portion 21 and bear the weight of to imbibition portion 22, again will fix a position drainage portion 1 and connect in the surface of

imbibition layer

2, 1 adaptation women's physiological characteristics of drainage portion is practical in the location, can drain physiological fluid to imbibition portion 22 fast, realize the drainage to physiological fluid, dams and the reposition of redundant personnel, sanitary towel's the side leakage effect of preventing has further been guaranteed, make sanitary towel reach the abundant absorption to physiological fluid.

Referring to fig. 6 and 7 together, fig. 6 is a schematic view of the structure of the sizing drainage portion in the embodiment, and fig. 7 is a schematic view of the drainage sleeve and the drainage material in the embodiment. Further, in step S1, preparing the positioning drain 1 includes the following sub-steps:

S1A, forming a drainage sleeve 11;

S1B, filling the drainage sleeve 11 with the drainage material 12;

S1C, sealing two ends of the drainage sleeve 11;

a positioning drainage part 1 is obtained.

Through filling drainage material 12 in drainage sleeve 11, form long tube-shape, perhaps long banding location drainage portion 1, when location drainage portion 1 connects in the surface of imbibition layer 2, can form protruding form, its physiological characteristic that more can the adaptation women, the drainage of being convenient for stereotype. Wherein, the drainage sleeve 11 is made of hot air cotton, and the drainage material 12 is a water absorption factor.

Preferably, step S1A, forming drainage sleeve 11 includes the following substeps:

S1A1, stacking two hot air cotton strips correspondingly to form a stacking group;

S1A2, ultrasonic welding is carried out on two side edges of the stacked group along the length direction of the stacked group;

s1a3, forming drainage sleeve 11.

The long-strip-shaped hot air cotton is used for preparing the drainage sleeve 11, the ultrasonic welding mode can be adopted for side edge forming, the simple realization of the preparation process of the drainage sleeve 11 can be facilitated, and the existing ultrasonic welding machine can be adopted in the specific application.

Preferably, in step S1B, the drainage sleeve 11 is filled with the drainage material 12, and the drainage sleeve 11 may be filled with the water absorption factor from the end of the drainage sleeve 11 by using an existing filling machine.

Preferably, in step S1C, the two ends of the drainage sleeve 11 are sealed by various sealing methods such as welding, ultrasonic welding, gluing, and sewing, which are not limited herein.

Preferably, in step S11, the preparing the dust-free cover 21 includes:

and S11a, making the dust-free paper into a bag shape to form a dust-free paper bag, wherein a coating space is formed in the dust-free paper bag. Specifically, after the dust-free paper is cut, two pieces of dust-free paper are stacked, and then the three opening sides are glued to form the dust-free paper bag. The dust-free paper can be cut and folded in half, and then the two opening sides are glued, so that the dust-free paper bag can be formed. Preferably, in step S11, the preparing the liquid absorbing portion 22 includes:

s11b, preparing the water absorption factor into water absorption factor paper. The existing process for preparing the water absorption factor paper by using the water absorption factor can be adopted, and the details are not repeated herein.

In step S12, the coating space of the dust-free coating portion 21 in which the liquid absorbing portion 22 is placed includes:

s12a, placing the water absorption factor paper in a coating space of a dust-free paper bag;

and S12b, sealing the mouth of the dust-free paper bag.

The dust-free coating part 21 is made into a dust-free paper bag shape, so that a coating space is conveniently formed, the liquid absorption part 22 of the water absorption factor paper is coated and carried, the liquid absorption part 22 is not required to be fixed through water-based glue, and the liquid absorption effect is ensured.

Preferably, in step S2, both ends of the positioning drainage part 1 are fixed by glue to the surface of the liquid absorbent layer 2. The two ends of the drainage sleeve 11 are glued and fixed on the surface of the dust-free coating part 21, and the two ends of the drainage sleeve 11 are only glued and fixed, so that the fixing effect of the positioning drainage part 1 and the liquid absorption layer 2 can be guaranteed, and the influence of excessive glue can be avoided. In specific applications, the existing gluing method can be adopted, and is not limited herein. Preferably, the drainage part 1 and the liquid absorbent layer 2 are positioned on the same center axis.

Preferably, in step S3, the liquid absorbent layer 2 is placed on the back layer 3. Firstly, a bottom layer 3 is arranged in a mould, and then a liquid absorption layer 2 which is glued with a drainage limiting part 1 is correspondingly arranged on the bottom layer 3. In step S4, the surface layer 4 covers the positioning drainage part 1 and the liquid absorbent layer 2, and the periphery of the surface layer 4 extends outward until it is directly attached to the back sheet 3. Preferably, in step S5, the base layer 3 and the surface layer 4 are molded so that the base layer 3 is connected to the peripheral edge of the surface layer 4, and the base layer 3 and the surface layer 4 also form a hermetically sealed space to cover the absorbent layer 2. When specifically using, the tool can adopt current hot melt tool, and its laminating periphery that corresponds bottom 3 and surface course 4 has looks adaptation hot melt ring, and bottom 3 is the PE material, and surface course 4 is hot-blast cotton or velvet soft cotton, and the hot melting of its accessible mould is as an organic whole.

Preferably, in step S5, embossing the bottom layer 3 and the face layer 4 to connect the bottom layer 3 with the periphery of the face layer 4 includes:

the bottom layer 3, the liquid absorbing layer 2, the positioning drainage part 1 and the surface layer 4 which are sequentially stacked from bottom to top are molded, so that the bottom layer 3 is connected with the periphery of the surface layer 4, and the liquid absorbing layer 2 and the surface layer 4 are molded to form a flow guide groove 5 and a side wing surrounding edge 6. It is specific, to bottom 3 through the mould, imbibition layer 2, location drainage portion 1 and surface course 4 carry out the mould pressing, wherein, inside the hot melt ring of mould, water conservancy diversion lug and flank recess have, the mould is when hot melt bottom 3 and surface course 4, mould pressing forms guiding gutter 5 and flank surrounding edge 6 on imbibition layer 2 and surface course 4, guiding gutter 5 is convenient for further water conservancy diversion dispersion to the physiological liquid in imbibition layer 2, guarantee the imbibition effect, flank surrounding edge 6 makes surface course 4 more accord with ms's physiological characteristic, guarantee the comfort of the use of sanitary towel.

Example two

Referring to fig. 8, fig. 8 is another structural diagram of the sizing drainage part in the embodiment. The difference between the preparation method of the sanitary napkin in the embodiment and the first embodiment is that:

in step S1, preparing the positioning drain 1 includes the following substeps:

s1a, integrally forming the shaping drainage strip 13 by a flexible material;

and S1b, obtaining the positioning drainage part 1.

That is, the positioning drainage part 1 in this embodiment is the shaped drainage strip 13 integrally formed by a flexible material. The adaptation will design drainage strip 13 and laminate in women's physiology position, equally can be with the layer that absorbs water of physiology liquid drainage to sanitary towel, directly hold back the liquid that flows from physiology position, avoid the edge leakage. Preferentially, design drainage strip 13 that flexible material made itself can form a little arch, and is more soft during attached design, and after the imbibition inflation, can not arouse great discomfort, when guaranteeing the drainage of design drainage portion 1 and damming the effect, increased the travelling comfort. In a specific application, the shaping drainage strip 13 can be integrally formed by using a flexible material, for example, flexible cotton.

S12A, filling the fluff pulp containing the water absorption factors into the coating space of the dust-free paper bag;

and S12B, sealing the mouth of the dust-free paper bag.

Through the fluff pulp that will contain water absorption factor fill in the cladding space of dustless container bag, seal again and form imbibition layer 2, can make water absorption factor's the effect of absorbing water obtain the release for physiological liquid spreads rapidly and is absorbed in the fluff pulp that contains water absorption factor, further promotes the imbibition effect of imbibition layer 2.

EXAMPLE III

Referring to fig. 9 to 11, fig. 9 is another flow chart of a method for manufacturing a sanitary napkin according to an embodiment, fig. 10 is a schematic structural view of a functional support layer according to an embodiment, and fig. 11 is a view showing a state where the functional support layer is engaged with a backsheet. The difference between the preparation method of the sanitary napkin in the embodiment and the first embodiment is that:

before obtaining the sanitary napkin in step S7, the method further comprises the following steps:

s6, the functional support layer 100 is prepared on the bottom layer 3.

Through the setting of function supporting layer 100, carry out the support after the deformation to the sanitary towel to the realization that sanitary towel location drainage function is more convenient.

Specifically, step S6 includes the following substeps:

s61, preparing the supporting body 101;

s62, disposing the first adhesive layer 102 and the two second adhesive layers 103 on one side of the supporting body 101; the two second adhesive layers 103 are respectively positioned at two opposite sides of the first adhesive layer 102; a gap is arranged between the first adhesive layer 102 and the second adhesive layer 103;

s64, the other surface of the support body 101 is provided on the back sheet 3.

Preferably, before step S64, the method further includes the following steps: s63, the first adhesive layer 102 and the space between the first adhesive layer 102 and the second adhesive layer 103 are embossed to form three embossings 110.

In step S61, the supporting body 101 may be made of a material with a settable hardness, such as paper, and may be made by the existing technology in specific applications, which is not limited herein. In step S62, the first adhesive layer 102 and the second adhesive layer 103 are both in the form of strips, and both adopt adhesive tapes with release paper, and the adhesive tapes are disposed on the surface of the supporting body 101 and then attached with the release paper. The two second adhesive layers 103 are respectively located on two opposite sides of the first adhesive layer 102, the first adhesive layer 102 is parallel to the second adhesive layer 103, and a space is provided between the two. In specific application, the process can be realized by adopting the existing process for preparing the release adhesive tape, and the details are not repeated here. In step S63, the embossings 110 may be formed on the central axis of the first adhesive layer 102 and the embossings 110 may be formed between the spaces between the first adhesive layer 102 and the second adhesive layer 103 by a conventional embossing process, where the three embossings 110 are parallel to each other, and preferably, the embossings 110 between the first adhesive layer 102 and the second adhesive layer 103 are the same distance from the first adhesive layer 102 to the second adhesive layer 103. In step S64, the other surface of the support body 101 is disposed on the bottom layer 3, and may be directly fixed, such as by sewing or thermal fusion, or detachably connected, such as by gluing.

First glue film 102 in this embodiment, support body 101, bottom 3 and location drainage portion 1 collineation setting, privately from the type paper after, first glue film 102 and second glue film 103 are towards pants, first glue film 102 is folded along the impressed watermark 110 of first glue film 102, make first glue film 102 adhere relatively, so can form the support arch, then paste two second glue films 103 on pants, form a support to bottom 3, thereby make imbibition layer 2 and surface course 4 maintain a stable state, realize supporting one to the whole sanitary towel in embodiment one, maintain and strengthen the location drainage effect of location drainage portion 1, the imbibition effect of imbibition layer 2, make the sanitary towel wholly can stabilize the use for a long time, thereby guarantee the result of use of sanitary towel.

Example four

Referring to fig. 2 to 8 again, the sanitary napkin of the present embodiment further includes a positioning and drainage unit 1, a liquid absorbent layer 2, a bottom layer 3, and a surface layer 4, wherein the liquid absorbent layer 2 is disposed on the bottom layer 3, the positioning and drainage unit 1 is disposed on the surface of the liquid absorbent layer 2, and the surface layer 4 covers the liquid absorbent layer 2 and the positioning and drainage unit 1. Carry out the drainage to women's physiology liquid through location drainage portion 1 for physiology liquid can drainage reposition of redundant personnel rapidly and permeate to imbibition layer 2, and location drainage portion 1 and women physiology characteristic looks adaptation can agree with women physiology characteristic after the imbibition inflation, reach the location effect, thereby guarantee the drainage effect, make sanitary towel can be abundant to physiology liquid absorption, can not the edge leakage.

Wherein, design drainage portion 1 includes drainage sleeve 11 and drainage material 12. Drainage material 12 is filled in drainage sleeve 11. The liquid absorbent layer 2 includes a dust-free coating portion 21 and a liquid absorbent portion 22, and the liquid absorbent portion 22 is provided in the dust-free coating portion 21. The central axis of the sizing drainage part 1 is overlapped with the central axis of the liquid absorbing layer 2. Both ends of the flow guide sleeve 11 are glued to the surface of the dust-free cover 21. The drainage sleeve 11 can be made into a long-strip-shaped cylinder by adopting a hot air cotton material, the drainage material 12 is a water absorption factor, and after the drainage sleeve 11 is uniformly filled with the water absorption factor, the two ends of the drainage sleeve 11 are sealed, so that the shaping drainage part 1 is formed. The dust-free cover 21 is a flat bag made of dust-free paper, and can cover and support the liquid-absorbing portion 22 of the absorbent factor paper. Drainage material 12 has strong water absorption performance, the design drainage portion 1 that forms is protruding form, can adapt to the laminating in women physiology position, make drainage material 12 drainage of design drainage portion 1 receive physiological liquid after, can permeate to dustless cladding portion 21 of closely laminating with it fast, at the same time by the absorption of imbibition portion 22, then spread imbibition portion 22 in whole dustless cladding portion 21 thereupon, realize the drainage of physiological liquid, hold back, reposition of redundant personnel, avoid the side leakage of physiological liquid. And when drainage material 12 because of imbibition inflation back, can further play the design effect, can not swing, when playing the location design effect, still guarantee the drainage effect of design drainage portion 1. And through dustless cladding part 21 to carry out the cladding setting to imbibition portion 22 for imbibition portion 22 carries out the imbibition in the space that dustless cladding part 21 was injectd, with better function of holding back, further avoids the physiological fluid side leakage.

The arrangement of the bottom layer 3 is convenient for the sanitary towel to be stuck and fixed on underpants for use, and when the sanitary towel is applied specifically, the bottom layer 3 can adopt the existing sanitary towel bottom layer, for example, the bottom layer 3 is formed by laminating PE small envelope, release paper, gum and a breathable bottom membrane. Through the setting of surface course 4 to the more comfortable use of user, when the specific application, surface course 4 can adopt close skin's cotton face, for example, adopts the gentle cotton face of velvet.

Preferably, the liquid absorbing layer 2 and the surface layer 4 are matched to form a guide groove 5, and the guide groove 5 is distributed around the shaping drainage part 1. Through the setting of guiding gutter 5, absorb physiological liquid to imbibition layer 2 and carry out the water conservancy diversion for more even dispersion of physiological liquid in imbibition layer 2, thereby guarantee the imbibition of imbibition layer 2 and cut off the reposition of redundant personnel effect, still can avoid the not edge leakage of physiological liquid under the great condition of physiological liquid volume. When specifically answering, can be behind bottom 3, imbibition layer 2 and the coincide of surface course 4, form a plurality of recess lines around design drainage portion 1 through the mode of mould pressing, form guiding gutter 5, guiding gutter 5 quantity is a plurality of in this embodiment, and one of them is around design drainage portion 1 setting, and other guiding gutters 5 are the arc form, and the periphery around design drainage portion 1 carries out the dispersion setting, and its specific quantity and shape can be decided according to actual conditions.

Preferably, the liquid absorbing layer 2 and the surface layer 4 are further matched with two wing surrounding edges 6, and the two wing surrounding edges 6 are positioned at two opposite sides of the shaping drainage part 1. The sanitary towel is more in line with the human engineering by the arrangement of the side wing surrounding edge 6, so that the sanitary towel is stably attached to the user, and the user feels more comfortable. Specifically, the flap surrounding edges 6 are of arc-shaped structures and are attached to the side edges of the surface layer 4, and the two flap surrounding edges 6 are arranged in axial symmetry by taking the central axis of the shaping drainage part 1 as a central line. In particular applications, the side panel perimeter 6 and the facing layer 4 may be integrally formed.

EXAMPLE five

The sanitary napkin in this embodiment is different from that in the third embodiment in that: the setting drainage part 1 in the embodiment comprises a setting drainage strip 13, and the setting drainage strip 13 is integrally formed by a flexible material. The position that will design drainage strip 13 corresponds the axis of sanitary towel inlays and establishes in sanitary towel or attached uses on the sanitary towel surface, and design drainage strip 13 is made by flexible material, and during the use, the adaptation will design drainage strip 13 and laminate in women's physiology position, can be with the layer that absorbs water of physiology liquid drainage to sanitary towel, directly hold back from the liquid that physiology position flows, avoid the edge leakage. Preferably, design drainage strip 13 that flexible material made itself can form and is protruding slightly, can play the design effect, and after the imbibition inflation, can further play the design effect, can not swing, when playing the location design effect, still guarantee the drainage of design drainage portion 1 and cut off the effect. In a specific application, the shaping drainage strip 13 can be integrally formed by using a flexible material, for example, flexible cotton.

The liquid absorbing part 22 is fluff pulp containing water absorbing factors, which is directly poured into a flat space inside the dust-free coating part 21 and uniformly dispersed in the dust-free coating part 21 to form the liquid absorbing layer 2, wherein the fluff pulp may be pulp.

EXAMPLE six

With continued reference to fig. 2 to 11, the difference between the present embodiment and the fourth embodiment is: the sanitary napkin further comprises a functional support layer 100, wherein the functional support layer 100 is disposed on the bottom layer 3. The functional support layer 100 includes a support body 101, a first glue layer 102, and two second glue layers 103. The first adhesive layer 102 is disposed on the supporting body 101, and after the supporting body 101 is folded, the first adhesive layer 102 is folded along with the supporting body 101. The first adhesive layer 102 is folded and bonded to each other. The second glue layers 103 are disposed on the supporting body 101 and spaced apart from one side of the first glue layer 102, and the two second glue layers 103 are spaced apart from two opposite sides of the first glue layer 102. Through the arrangement of the first glue layer 102, the maintenance of the positioning drainage part 1 is facilitated. The first adhesive layer 102 and the second adhesive layer 103 are matched, so that the sanitary towel is stably attached to underwear in a characteristic supporting shape, and the positioning drainage and liquid absorption effects of the sanitary towel are further ensured.

Specifically, the supporting body 101 is rectangular and attached to the bottom layer 3, and the supporting body 101 may be made of a material with a settable hardness, such as a paper body, and may be selected to be conventional in specific applications, which is not described herein again. The first adhesive layer 102 is a non-setting adhesive with release paper, and is in a strip shape, and is arranged on one surface of the support body 101 facing to underpants, the central axis of the first adhesive layer 102 in the embodiment is overlapped with the central axis of the sanitary napkin by the central axis of the support body 101, after the release paper of the first adhesive layer 102 is torn off, the non-setting adhesive leaks out, when the support body 101 is folded along the central axis of the sanitary napkin, the first adhesive layer 102 is relatively adhered together, so that the support body 101 is maintained in a folding deformation state, and the positioning drainage part 1 on the sanitary napkin is supported and maintained. The second adhesive layer 103 is also a strip-shaped adhesive sticker with release paper, and is disposed on one side of the support body 101 facing the underwear and located on two opposite sides of the support body 101. Any second glue layer 103 is parallel to the first glue layer 102, and has a gap with the first glue layer 102. After first glue film 102 is folded and is bound relatively, privately from type paper on two second glue films 103, can be so that the non-setting adhesive of second glue film 103 leaks outward, so as to attach in pants, and because the physiology structure of pants, the interval between second glue film 103 and the first glue film 102 can form reverse folding structure, reverse folding structure here is that second glue film 103 can be folded towards the direction that is carried on the back in first glue film 102, thereby make whole support body 101 form approximate W shape structure, so can make support body 101 firm in pants, and keep the stability of shape, also more accord with women's physiology characteristic, thereby further guarantee the state stability of location drainage portion 1.

Preferably, three lines 110 are respectively formed on the supporting body 101 along a direction parallel to the central axis of the sanitary napkin, wherein one line 110 overlaps the central axis of the first adhesive layer 102, and the other two lines 110 are respectively located at the interval between the first adhesive layer 102 and the second adhesive layer 103. Through the arrangement of the grains 110, the folding actions at the positions of the first adhesive layer 102 and the intervals between the second adhesive layer 103 and the first adhesive layer 102 are facilitated, and the shaping is easier. The lines 110 are folding lines, the first folding line is overlapped with the central axis of the first adhesive layer 102, and the other two folding lines are respectively positioned in the middle of the space between the first adhesive layer 102 and the second adhesive layer 103 and are overlapped with the central axis of the supporting body 101.

Of course, in specific applications, the women may select the folding functional support layer 100 to form the positioning drainage part 1 according to their own usage habits, or select the non-folding functional support layer 100 to be used as the existing sanitary napkin, which is not limited herein.

To sum up: the sanitary towel prepared by the sanitary towel preparation method is of a coating structure as a whole, is not fixed by laminating water-based glue, is shaped by drainage and expansion of the shaped drainage part, and is cut off and shunted by the liquid absorption layer, so that the whole liquid absorption effect of the sanitary towel is improved, side leakage is avoided, and the sanitary towel can be fully absorbed; and the sanitary towel can be stably supported by the functional supporting layer, so that the sanitary towel maintains the shape of positioning drainage, and the positioning drainage and liquid absorption effects of the sanitary towel are ensured.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A method of making a sanitary napkin, comprising:

respectively preparing a positioning drainage part (1) and a liquid absorption layer (2);

the positioning drainage part (1) is connected to the surface of the liquid absorbing layer (2);

the liquid absorbing layer (2) is arranged on the bottom layer (3);

the surface layer (4) covers the positioning drainage part (1) and the liquid absorbing layer (2);

embossing the bottom layer (3) and the face layer (4) such that the bottom layer (3) is connected to the periphery of the face layer (4);

obtaining the sanitary towel;

wherein the preparation of the liquid absorbent layer (2) comprises:

preparing a dust-free coating part (21) and a liquid absorbing part (22) respectively;

the liquid absorbing part (22) is arranged in the coating space of the dust-free coating part (21).

2. The method of making a sanitary napkin as claimed in claim 1, further comprising the steps of, prior to obtaining the sanitary napkin:

the prepared functional supporting layer (100) is arranged on the bottom layer (3).

3. A method for preparing a sanitary napkin according to claim 1, wherein preparing the positioning drains (1) comprises:

forming a drainage sleeve (11);

filling the drainage sleeve (11) with a drainage material (12);

sealing both ends of the drainage sleeve (11);

obtaining the positioning drainage part (1).

4. A method of making a sanitary napkin according to claim 3 wherein forming the drainage sleeve (11) comprises:

two hot air cotton strips are correspondingly stacked to form a stacking group;

forming the drainage sleeve (11).

5. A method for preparing a sanitary napkin according to claim 1, wherein preparing the positioning drains (1) comprises:

the shaping drainage strip (13) is integrally formed by flexible materials;

obtaining the positioning drainage part (1).

6. A method for preparing a sanitary napkin according to claim 2, wherein the step of preparing a functional support layer (100) on the bottom layer (3) comprises:

preparing a support body (101);

arranging a first adhesive layer (102) and two second adhesive layers (103) on one surface of the support body (101) respectively; the two second adhesive layers (103) are respectively positioned at two opposite sides of the first adhesive layer (102); a space is arranged between the first glue layer (102) and the second glue layer (103);

the other surface of the support body (101) is arranged on the bottom layer (3).

7. The utility model provides a sanitary towel, its characterized in that, includes location drainage portion (1), imbibition layer (2), bottom (3) and surface course (4), imbibition layer (2) are located bottom (3), location drainage portion (1) are located the surface of imbibition layer (2), surface course (4) cover in imbibition layer (2) and location drainage portion (1), imbibition layer (2) are including dustless cladding portion (21) and imbibition portion (22), imbibition portion (22) are arranged in the cladding space of dustless cladding portion (21).

8. A sanitary towel according to claim 7, characterized in that the positioning drain (1) comprises a drain sleeve (11) and a drain material (12) filled in the drain sleeve (11).

9. A sanitary towel according to claim 7, characterized in that the shaping and drainage strips (13) are integrally formed from a flexible material.

10. A sanitary napkin according to claim 7, further comprising a functional support layer (100), said functional support layer (100) being provided on said backsheet (3).