Skin leakage-proof sanitary towel

Abstract

The utility model relates to a skin leakproof sanitary napkin which comprises a core body (10), a surface layer (20) and a bottom film (30), the core body is arranged between the surface layer and the bottom film, leakproof side edges (40) are arranged on the two sides of the core body (10), the leakproof side edges (40) are attached to the surface layer (20) and the bottom film (30), and the core body, the surface layer, the bottom film and the leakproof side edges are bent towards the side of the surface layer. The leakage-proof side edge (40) is made of elastic water-repellent cloth. The sanitary napkin has the advantages that the elastic leakage-proof side edges are adopted, the overall natural bending of the sanitary napkin is achieved through the elastic recovery function of the leakage-proof side edges, the leakage-proof side edges are made of water-repellent cloth commonly used by the sanitary napkin, the sanitary napkin has good contact feeling with the human body, and the naturally-bent sanitary napkin is comfortable to wear and strong in side leakage prevention function; the skin leakage-proof sanitary napkin with the core body suspension structure has larger liquid containing modification and better body feeling.

Description

TECHNICAL FIELD

[0001] The utility model relates to female sanitary napkin manufacturing technology, especially a kind of body fit leakage-proof sanitary napkin. BACKGROUND

[0002] The existing female sanitary napkin product is mostly plane, and does not fit the body curve, and is bent with underpants when used.The defect is that the comfort is poor when wearing, and the sanitary napkin core body appears to be folded after forced bending, and liquid leakage is easy to occur.The plane sanitary napkin is easy to separate from the human body when lying flat or side-lying, and is also easy to cause side leakage.Some plane sanitary napkin+side rubber band structure increases rubber band on the plane water-repellent side edge of sanitary napkin, to realize bending, and this kind of sanitary napkin has the effect of blocking liquid transverse diffusion, but the effect is not obvious, and the touch feeling is rough after rubber band and non-woven fabric are compounded, and skin is rubbed when contacting with thigh root, and female private parts are easy to cause allergy and discomfort. SUMMARY

[0003] The utility model aims at providing a kind of body fit leakage-proof sanitary napkin, to make sanitary napkin realize the bending of natural state, improve the comfort and the effect of preventing side leakage.

[0004] In order to realize the above-mentioned purpose, the technical scheme of the utility model is as follows: a kind of body fit leakage-proof sanitary napkin, including core body (10), surface layer (20) and bottom film (30), the core body is arranged between the surface layer and bottom film, both sides of the core body (10) are equipped with leakage-proof side edge (40), the leakage-proof side edge (40) is attached with the surface layer (20) and bottom film (30), the core body, surface layer, bottom film and leakage-proof side edge are bent to the surface layer side.

[0005] Further, in order to realize the bending structure of sanitary napkin, the leakage-proof side edge (40) is the leakage-proof side edge made of elastic water-repellent cloth.

[0006] Further, a preferred sanitary napkin bending structure is that the leakage-proof side edge (40) is attached with the surface layer (20) by elastic contraction.

[0007] Further, the combination structure of a kind of core body attachment structure body fit leakage-proof sanitary napkin is that the core body (10) is attached with the surface layer (20) and the bottom film (30), the leakage-proof side edge (40) includes leakage-proof side edge body layer (41) and leakage-proof side edge folding layer (42), the leakage-proof side edge body layer (41) is attached with the bottom film (30), the leakage-proof side edge folding layer (42) is folded to the surface layer (20), the leakage-proof side edge folding layer (42) is partially attached with the surface layer (20) in middle part, and the leakage-proof side edge folding layer (42) is completely attached with the surface layer (20) at both ends.

[0008] Further, the combination structure of the core suspension structure body-adhering leakproof sanitary napkin is that the core (10) is adhered to the surface layer (20), the leakproof side edge comprises a leakproof side edge folding back layer (43) and a leakproof side edge folding layer (42), the leakproof side edge folding back layer (43) is wrapped from the side edge of the core to the bottom surface of the core, the leakproof side edge (40) is provided with a bottom film cushion layer (50) between the leakproof side edge (40) and the bottom film, the leakproof side edge folding back layer (43) is arranged between the core (10) and the bottom film cushion layer (50), the inner measuring edge of the leakproof side edge folding back layer (43) is adhered to the bottom film cushion layer (50) through the structural adhesive (45) in the full length, the outer measuring edge of the leakproof side edge folding back layer (43) is adhered to the bottom film cushion layer (50) through the structural adhesive (46) at both ends, and the outer measuring edge of the leakproof side edge folding back layer (43) is separated from the bottom film cushion layer (50) in the middle part.

[0009] Further, in order to obtain a good leakproof side edge turning-up effect, the separation length (S) of the leakproof side edge folding back layer (43) and the bottom film cushion layer (50) is 0.4-0.8 times the full length (L) of the sanitary napkin.

[0010] Further, the bottom film cushion layer (50) is a non-elastic water-repellent cloth.

[0011] The beneficial effects of the utility model are as follows: the elastic leakproof side edge is adopted, the natural bending of the sanitary napkin is realized by using the elastic recovery function of the leakproof side edge, the leakproof side edge adopts the water-repellent cloth material commonly used in sanitary napkins, has good contact feeling with the human body, the naturally bent sanitary napkin is comfortable to wear, the side leakage prevention function is strong, and the core suspension structure body-adhering leakproof sanitary napkin has greater liquid containing capacity and better body feeling.

[0012] The utility model will be described in detail below in combination with the drawings and embodiments. DRAWINGS

[0013] Figure 1 is the appearance structure diagram of the core adhering structure body-adhering leakproof sanitary napkin of the utility model;

[0014] Figure 2 is the side view of the core adhering structure body-adhering leakproof sanitary napkin of the utility model;

[0015] Figure 3 is the surface layer surface view of the core adhering structure body-adhering leakproof sanitary napkin of the utility model;

[0016] Figure 4 is the structure exploded view of the core adhering structure body-adhering leakproof sanitary napkin of the utility model;

[0017] Figure 5 is the A-A sectional view of Figure 1 ; and

[0018] Figure 6 B-B sectional view of Figure 1 ;

[0019] Figure 7 is a core body fitting structure body leak-proof sanitary napkin manufacturing schematic diagram, the elastic water-repellent cloth is elastically lengthened;

[0020] Figure 8 is a manufacturing schematic diagram of the utility model, the inner side of the elastic water-repellent cloth is folded into a leak-proof side edge folding layer 42, and a leak-proof side edge 40 is formed by a leak-proof side edge body layer 41 and the leak-proof side edge folding layer 42;

[0021] Figure 9 is a core body fitting structure body leak-proof sanitary napkin manufacturing schematic diagram, the surface layer 20 and the leak-proof side edge folding layer 42 are fitted, the core body 10 and the surface layer 20 are fitted, and the flow guide groove 22 is formed by using the surface roller to press the surface layer 20;

[0022] Figure 10 is a core body fitting structure body leak-proof sanitary napkin manufacturing schematic diagram, the bottom film 30 and the core body 10 are adhesively fitted;

[0023] Figure 11 is a core body fitting structure body leak-proof sanitary napkin manufacturing schematic diagram, and the structure body of the sanitary napkin is formed with a peripheral seal 60 at both ends, and the sanitary napkin shape is cut out;

[0024] Figure 12 is a surface layer 20 front view of the core body suspension structure body leak-proof sanitary napkin of the utility model;

[0025] Figure 13 C-C sectional view of Figure 11 ;

[0026] Figure 14 D-D sectional view of Figure 11 ;

[0027] Figure 15 E-E sectional view of Figure 11 ;

[0028] Figure 16 F-F sectional view of Figure 14 , indicating the position of the structural adhesive on the bottom film pad layer 50;

[0029] Figure 17 is a core body fitting structure body leak-proof sanitary napkin manufacturing schematic diagram, the elastic water-repellent cloth is elastically lengthened;

[0030] Figure 18 is a core body fitting structure body leak-proof sanitary napkin manufacturing schematic diagram, the elastic water-repellent cloth is elastically lengthened;

[0031] Figure 19 is a core suspension structure body leak-proof sanitary napkin manufacturing schematic diagram, the outer side of the elastic water-repellent cloth is wrapped from the side of the core to the bottom surface of the core, forming a leak-proof side edge folding layer 43;

[0032] Figure 20 is a core suspension structure body leak-proof sanitary napkin manufacturing schematic diagram, the leak-proof side edge folding layer 43 is combined with the bottom film pad layer 50, and the bottom film pad layer 50 is combined with the bottom film 30. DETAILED DESCRIPTION

[0033] Example 1:

[0034] As Figures 1 to 6 A core combined structure body leak-proof sanitary napkin includes a core 10, a surface layer 20, a bottom film 30, and two pieces of leak-proof side edges 40.

[0035] The core 10 is formed by molding wood pulp, water-absorbent polymer materials, toilet paper, or water-absorbent paper materials through a die, and the core 10 has strong liquid absorption function.

[0036] The core 10 is arranged between the surface layer 20 and the bottom film 30. The surface layer 20 covers the core 10, and the surface layer 20 is a contact layer with the human body. The core 10 and the surface layer 20 are bonded and combined by using structural adhesive 12, and a flow guide groove 22 is arranged on the surface layer 20. The bottom film 30 is also bonded and combined with the core 10 by using structural adhesive 13, and the area of the bottom film 30 is larger than the area of the core 10. The bottom film has side wings 32 on both sides of the core.

[0037] Two pieces of leak-proof side edges 40 are arranged on both sides of the core 10. The leak-proof side edges 40 are made of elastic water-repellent cloth.

[0038] Elastic water-repellent cloth is a kind of elastic non-woven fabric with longitudinal elasticity and water-repellent properties. The elastic non-woven fabric is made by adding polymers and fiber enhancers on the surface of the fibers and controlling the arrangement direction of the fibers, so that it has certain elasticity and tensile strength in a certain direction. Elastic non-woven fabric is widely used in medical care, home cleaning, personal care, and industrial fields. It is most widely used in the field of medical care, including sterile bandages, surgical gowns, surgical masks, and other products. It also has a large number of applications in the field of personal care, such as wet wipes, sanitary pads, and paper diapers. Elastic water-repellent cloth is based on elastic non-woven fabric, and water-repellent substances are added to the surface of the fibers, so that liquid flows along the surface of the non-woven fabric without penetrating, thereby achieving the effect of water-repellency.

[0039] The leakage-proof side edge 40 comprises a leakage-proof side edge body layer 41 and a leakage-proof side edge folding layer 42. The leakage-proof side edge body layer 41 is provided with a shape corresponding to the bottom film 30 and is provided with a wing edge 44. The leakage-proof side edge folding layer 42 is a 180° folded edge on the leakage-proof side edge body layer 41, and the leakage-proof side edge folding layer 42 is folded towards the surface layer 20. The leakage-proof side edge folding layer 42 is attached to the surface layer 20 by elastic contraction, and the attachment mode adopts structural adhesive bonding. The leakage-proof side edge folding layer 42 is partially attached to the surface layer 20 in the middle part, and the structural adhesive 21 bonds the leakage-proof side edge folding layer 42 at the edge of the surface layer 20, so that the leakage-proof side edge folding layer 42 forms a free edge 42a in the middle part. The leakage-proof side edge folding layer 42 is completely attached to the surface layer 20 at both ends.

[0040] The leakage-proof side edge body layer 41 is attached to the bottom film 30, and the attachment mode adopts structural adhesive 33 bonding. The leakage-proof side edge body layer 41 and the bottom film 30 are attached in a natural state, i.e. non-elastic contraction bonding.

[0041] Due to the elastic contraction of the leakage-proof side edge folding layer 42, the overall structure of the sanitary napkin (including the core body 10, the surface layer 20, the bottom film 30 and the leakage-proof side edge 40) is curved, and the curved direction is towards the surface layer 20 side.

[0042] In the curved state, the free edge 42a of the sanitary napkin is turned up, and the leakage-proof side edge folding layer 42 forms a "cofferdam" structure, which can prevent liquid leakage and improve the liquid receiving capacity of the sanitary napkin.

[0043] The embodiment adopts an elastic leakage-proof side edge, and utilizes the elastic recovery function of the leakage-proof side edge to make the overall sanitary napkin maintain a natural curve. The leakage-proof side edge adopts a commonly used water-repellent cloth material for sanitary napkins, has good contact with the human body, is comfortable to wear, and has strong side leakage prevention function.

[0044] Example Two

[0045] As Figures 7 to 10 , a manufacturing method of a core-attached structure body leakage-proof sanitary napkin, the manufacturing method of the body leakage-proof sanitary napkin is described in Example One, and the steps of the manufacturing method comprise:

[0046] a. Elongate the elastic water-repellent cloth 4a by elasticity on a continuous production line, as Figure 7 shown;

[0047] b. Fold the inner side edge of the elastic water-repellent cloth to form a leakage-proof side edge folding layer 42, and form a leakage-proof side edge 40 composed of a leakage-proof side edge body layer 41 and a leakage-proof side edge folding layer 42, as Figure 8 shown.

[0048] c. The surface layer 20 is attached to the leakage-proof side edge folding layer 42, and the leakage-proof side edge folding layer 42 is attached to the surface layer 20 by structural adhesive 21, so that the leakage-proof side edge folding layer 42 forms a free edge 42a in the middle, as shown in Figure 9 .

[0049] d. The core 10 is attached to the surface layer 20 by structural adhesive 12, and the surface layer 20 is formed into a flow guide groove 22 by using a flow guide roller, as shown in Figure 9 .

[0050] e. The bottom film 30 is attached to the core 10 by structural adhesive 13, as shown in Figure 10 . Thus, the sanitary napkin structure is formed by the combination of the core 10, the surface layer 20, the bottom film 30, and the leakage-proof side edge 40.

[0051] f. The two ends of the sanitary napkin structure are reinforced by heat rolling, ultrasonic compounding, or adhesive bonding, and the sanitary napkin structure is cut into a sanitary napkin shape, as shown in Figure 11 .

[0052] The cut sanitary napkin has two elastic leakage-proof side edges 40, which form a curved (crescent) sanitary napkin. The leakage-proof side edge folding layer 42 is completely attached to the core 10, the surface layer 20, and the bottom film 30 at the two ends of the sanitary napkin structure. The elastic recovery of the leakage-proof side edge 40 causes the sanitary napkin to bend towards the surface layer, and the free edge 42a of the leakage-proof side edge folding layer 42 is raised on the surface layer, as shown in Figure 1 . By adjusting the elastic stretching length of the leakage-proof side edge folding layer 42, sanitary napkins with different bending degrees can be obtained.

[0053] Example Three:

[0054] As shown in Figures 11 to 14 , a sanitary napkin with a core suspension structure and a leakage-proof side edge, which is an improvement of Example One, includes a core 10, a surface layer 20, a bottom film 30, and two leakage-proof side edges 40. The two leakage-proof side edges 40 are arranged on the two sides of the core.

[0055] In this example, the core 10 is attached to the surface layer 20 by structural adhesive. The leakage-proof side edge 40 includes a leakage-proof side edge folding layer 42 and a leakage-proof side edge folding back layer 43, and the leakage-proof side edge folding back layer 43 covers from the side edge of the core to the bottom surface of the core.

[0056] As same as example one, the leakage-proof side edge folding layer 42 is folded to the surface layer 20, and the leakage-proof side edge folding layer 42 is partially attached to the surface layer 20, so that the leakage-proof side edge folding layer 42 forms a free edge 42a. The leakage-proof side edge folding layer 42 is attached to the surface layer 20 by elastic contraction and structural adhesive. Due to the elastic contraction of the leakage-proof side edge folding layer 42 and the leakage-proof side edge folding-back layer 43, the core 10, the surface layer 20 and the leakage-proof side edge 40 are bent, and the bending direction is towards the surface layer 20 side. In the bent state, the sanitary napkin can make the free edge 42a turn up, as shown in Figure 14 、 15

[0057] The leakage-proof side edge 40 is provided with a bottom film pad layer 50 between the bottom film, and the leakage-proof side edge folding-back layer 43 is arranged between the core 10 and the bottom film pad layer 50. The bottom film pad layer 50 is made of water-repellent cloth. Since the bottom film pad layer 50 does not need to be elastically deformed, in this embodiment, the bottom film pad layer is made of non-elastic water-repellent cloth.

[0058] The leakage-proof side edge folding-back layer 43 is attached to the bottom film pad layer 50 by structural adhesive. The inner edge of the leakage-proof side edge folding-back layer 43 is attached to the bottom film pad layer 50 by structural adhesive 45 along the full length (L), and the outer edge of the leakage-proof side edge folding-back layer 43 is attached to the bottom film pad layer 50 by structural adhesive 46 at both ends, as shown in Figure 14 、 Figure 16 The outer edge of the leakage-proof side edge folding-back layer 43 is separated from the bottom film pad layer 50 (not attached to the bottom film pad layer 50) in the middle part. When the core 10, the surface layer 20 and the leakage-proof side edge 40 are bent, the outer side of the leakage-proof side edge folding-back layer 43 in the separated section (S section) in the middle part can turn up on the bottom film pad layer 50, so that the core 10 and the surface layer 20 on both sides and the leakage-proof side edge 40 form a floating part 47, as shown in Figure 15 Due to the elastic contraction of the leakage-proof side edge 40, the greater the turning-up amount of the floating part 47, the closer it is to the middle part of the sanitary napkin. The length S of the separated section of the outer side of the leakage-proof side edge folding-back layer 43 in the middle part is 0.4-0.8 times the full length L.

[0059] The bottom film pad layer 50 is divided into two pieces, and each piece of the bottom film pad layer 50 corresponds to a piece of the leakage-proof side edge 40. The bottom film pad layer 50 is attached to the bottom film 30 by structural adhesive.

[0060] Example four:

[0061] A manufacturing method of a core floating structure attached leakage-proof sanitary napkin, the manufacturing method of the core floating structure attached leakage-proof sanitary napkin is described in example three, and the steps of the manufacturing method include:

[0062] a. Elongate the elastic water-repellent cloth as the leakage-proof side edge 40 on the continuous production line, as shown in Figure 17 b. Fold the leakage-proof side edge folding layer 42 to the surface layer 20, and the leakage-proof side edge folding layer 42 is partially attached to the surface layer 20, so that the leakage-proof side edge folding layer 42 forms a free edge 42a, as shown in c. Attach the leakage-proof side edge folding-back layer 43 to the core 10 and the bottom film pad layer 50 by structural adhesive, as shown in

[0063] b. Fold the inner side of the elastic water-repellent cloth out of the leakage-proof side edge folding layer 42, as shown in Figure 18 . .

[0064] c. Attach the surface layer 20 to the leakage-proof side edge folding layer 42, and the leakage-proof side edge folding layer 42 is partially attached to the surface layer 20 with the structural adhesive 21, so that the leakage-proof side edge folding layer 42 forms a free edge 42a in the middle.

[0065] d. Attach the core 10 to the surface layer 20 with the structural adhesive 12, and form the flow guide groove 22 on the surface layer 20 using a flow guide roller.

[0066] e. Cover the outer side of the elastic water-repellent cloth from the side of the core to the bottom surface of the core to form the leakage-proof side edge folding-back layer 43, as shown in Figure 19 .

[0067] f. Attach the leakage-proof side edge folding-back layer 43 to the bottom film pad layer 50 with the structural adhesive, and the inner side of the leakage-proof side edge folding-back layer 43 is attached to the bottom film pad layer 50 with the structural adhesive 45 in the full length (L), the outer side of the leakage-proof side edge folding-back layer 43 is attached to the bottom film pad layer 50 with the structural adhesive 46 at both ends, and the outer side of the leakage-proof side edge folding-back layer 43 is separated from the bottom film pad layer 50 (not attached to the bottom film pad layer 50) in the middle (S section), as shown in Figure 20 .

[0068] g. Attach the bottom film pad layer 50 to the bottom film 30 with the structural adhesive 51, and thus form the sanitary napkin structure composed of the core 10, the surface layer 20, the bottom film 30, the leakage-proof side edge 40, and the bottom film pad layer 50, as shown in Figure 20 .

[0069] h. Strengthen the two ends of the sanitary napkin structure by a composite process such as hot rolling, ultrasonic wave compounding, or adhesive bonding to form the peripheral seal 60, and cut the sanitary napkin structure into the shape of a sanitary napkin, as shown in Figure 12 .

[0070] Thus, the manufacturing of the core-suspended structure attached leakage-proof sanitary napkin is completed. The manufactured sanitary napkin has the two leakage-proof side edges 40 elastically contracted relative to the bottom film pad layer 50 and the bottom film 30 to form a curved (crescent-shaped) sanitary napkin, the free edge 42a of the leakage-proof side edge folding layer 42 is raised on the surface layer, and the suspended part 47 of the leakage-proof side edge is also raised from the bottom film pad layer 50.

Claims

1. An adhesive body leakproof sanitary napkin comprising a core (10), a top sheet (20) and a back sheet (30), said core being disposed between said top sheet and back sheet, characterized in that, The core (10) is provided with leakproof side edges (40) on both sides, the leakproof side edges (40) are attached to the surface layer (20) and the bottom film (30), and the core, the surface layer, the bottom film and the leakproof side edges are bent towards the surface layer side.

2. The skin-fit leakproof sanitary napkin according to claim 1, characterized by The leakproof side edges (40) are made of elastic water-repellent cloth.

3. The skin-fit leakproof sanitary napkin according to claim 1, characterized by The leakproof side edges (40) are attached to the surface layer (20) through elastic contraction.

4. The skin-fit leakage-proof sanitary napkin according to claim 1, characterized by The core (10) is attached to the surface layer (20) and the bottom film (30), the leakproof side edges (40) comprise a leakproof side edge body layer (41) and a leakproof side edge folding layer (42), the leakproof side edge body layer (41) is attached to the bottom film (30), the leakproof side edge folding layer (42) is folded towards the surface layer (20), the leakproof side edge folding layer (42) is partially attached to the surface layer (20) in the middle part, and the leakproof side edge folding layer (42) is completely attached to the surface layer (20) at both ends.

5. The skin-fit leakage-proof sanitary napkin according to claim 1, characterized by The core (10) is attached to the surface layer (20), the leakproof side edges comprise a leakproof side edge folding layer (42) and a leakproof side edge folding back layer (43), the leakproof side edge folding back layer (43) is wrapped from the side edge of the core to the bottom surface of the core, a bottom film pad layer (50) is arranged between the leakproof side edges (40) and the bottom film, the leakproof side edge folding back layer (43) is arranged between the core (10) and the bottom film pad layer (50), the inner measuring line of the leakproof side edge folding back layer (43) is attached to the bottom film pad layer (50) through structural adhesive in the full length, the outer measuring line of the leakproof side edge folding back layer (43) is attached to the bottom film pad layer (50) through structural adhesive at both ends, and the outer measuring line of the leakproof side edge folding back layer (43) is separated from the bottom film pad layer (50) in the middle part.

6. The skin-fit leakage-proof sanitary napkin according to claim 5, characterized by The separation length (S) of the leakproof side edge folding back layer (43) and the bottom film pad layer (50) is 0.4-0.8 times the full length (L) of the sanitary napkin.

7. The skin-fit leakage-proof sanitary napkin according to claim 5, characterized by The bottom film pad layer (50) is made of non-elastic water-repellent cloth.

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