WO2012171265A1 - Sanitary napkin having new type of absorption layer and processing method therefor - Google Patents

Abstract

A sanitary napkin having a new type of absorption layer and processing method therefor. The sanitary napkin comprises a surface layer (1), an absorption layer, and a bottom layer (5). The absorption layer is between the surface layer (1) and the bottom layer (5). The absorption layer has multiple sewing threads (7) interpenetrating therein for dividing the absorption layer into and fastening multiple web structures. The sewing threads can penetrate the surface layer (1), and separately connect the surface layer (1) and the bottom layer (5), thereby forming an integral body. The absorption layer can comprise a fluff pulp layer (3), a dispersion layer (2) thereabove, and an absorbent paper layer (4) therebelow. The sewing threads (7) can penetrate the fluff pulp layer (3), and separately connect the dispersion layer (2) and the absorbent paper layer (4). The fluff pulp layer (3) can be provided with multiple fiber coagulation points. The sanitary napkin is simple in structure, economic, practical, safe, sanitary, and comfortable. The absorption layer is not easy to deform and fracture. The processing method has a simple production process and high production efficiency.

Description

 Description

 Sanitary napkin with novel absorbent layer and processing method thereof

 The present invention relates to a sanitary napkin, and in particular to a sanitary napkin having a novel absorbent layer and a method of processing the same. Background technique

 At present, commercially available sanitary napkins are usually made up of a mixture of fluff pulp and a polymeric water absorbing layer to form an absorbent layer, which is then laminated by a top layer and a bottom layer. After the user uses the sanitary napkin, the water absorbing layer swells due to a large amount of water absorption of the polymer absorbing layer, forming a water absorbing mass, and the water absorbing mass is pulled by the water absorbing mass, and the user twists during the movement to make the water absorbing group Due to the uneven force of the other parts and the different pressing and pulling forces, the absorption layer of the sanitary napkin is wound, agglomerated, broken, delaminated, broken or the liquid is not uniformly transported. In the absence of the first time replacement, various discomforts may occur, and even the phenomenon that the polymer water absorbing layer expands and is squeezed and overflows, which seriously affects the user's health. Summary of the invention

 In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide a sanitary napkin having a novel absorbent layer and a processing method thereof, which separate the absorbent layer to form a plurality of mesh structures and are fixed so that the inner layer of the absorbent layer is fluffed. The slurry and polymer water absorbing layer are not easily deformed and broken. The technical solution is as follows:

 A sanitary napkin having a novel absorbent layer, comprising a top layer, an absorbent layer and a bottom layer, wherein the absorbent layer is disposed between the top layer and the bottom layer, wherein the absorbent layer is interspersed with a plurality of sewing threads, and the sewing thread is used for The absorber layer is divided into a plurality of mesh structures and fixed.

 Specifically, the sewing thread passes through the face layer, the absorbent layer, the bottom layer, and connects the face layer and the bottom layer, respectively, to form an integral body.

 Specifically, the absorbing layer is composed of a fluff pulp layer and a dredging layer thereabove and a lower absorbent paper layer, and the sewing thread passes through the fluff pulp layer and connects the upper dredging layer and the lower absorbent paper layer, respectively.

 Specifically, the absorbing layer is composed of a fluff pulp layer and a dredging layer thereabove and a lower absorbent paper layer, and the sewing thread passes only through the fluff pulp layer, and the fluff pulp layer is divided into a plurality of mesh structures and fixed.

 Specifically, a single segment of the sewing thread exists.

 Specifically, the sewing threads are connected to each other.

Embodiments of the present invention also provide a sanitary napkin having a novel absorbent layer, including a top layer, an absorbent layer, and a bottom layer. The absorbing layer is disposed between the top layer and the bottom layer, and the absorbing layer is composed of a fluff pulp layer and a dredging layer thereon and a lower absorbent paper layer, wherein the fluff pulp layer is provided with a plurality of fiber freezing points, the fiber The freezing point is used to separate the fluff pulp layer of the absorbent layer into a plurality of mesh structures and to fix them.

 Embodiments of the present invention provide a processing method for a sanitary napkin having a novel absorbent layer, which is formed by dividing the absorbent layer into a plurality of mesh structures and fixing during the processing of the absorbent layer in the processing process of the existing sanitary napkin. Steps, the steps specifically include:

 Step 1. The velvet sewing process is used to add the fluff pulp layer of the absorbing layer to the sewing thread, wherein the sewing thread only penetrates the fluff pulp layer and is equidistantly arranged;

 Step 2. A dredging layer is arranged on the upper part of the fluff pulp layer, and an absorbent paper layer is arranged on the lower part of the fluff pulp layer to form a complete absorbent layer.

 The embodiment of the invention further provides a processing method for a sanitary napkin having a novel absorbent layer, which is formed by dividing the absorbent layer into a plurality of mesh structures and fixing during the processing of the absorbent layer in the processing process of the existing sanitary napkin. The steps of the steps include:

 Step 1. A dredging layer is arranged on the upper part of the fluff pulp layer, and a water absorbent paper layer is arranged on the lower part of the fluff pulp layer to form a complete absorption layer;

 Step 2: Using a quilting sewing process, the fluff pulp layer of the absorbing layer is added into the sewing thread, wherein the sewing thread penetrates the fluff pulp layer and extends in the upward and downward directions, respectively, upwardly passing through the dredging layer disposed above the fluff pulp layer. And the top layer, down through the absorbent paper layer and the bottom layer below the fluff pulp layer, and the sewing threads are equidistantly arranged.

 The step may further be: using ultrasonic waves to melt the fibers in the fluff pulp layer of the absorbing layer and then solidifying, thereby forming a plurality of fiber freezing points, thereby separating the fluff pulp layer of the absorbing layer into a plurality of reticular structures and fixing.

 The beneficial effects of the embodiments of the present invention are:

 The sanitary napkin with the novel absorbent layer according to the embodiment of the invention fixes the absorbent layer of the sanitary napkin by using a sewing thread or by an ultrasonic process, and at the same time makes the liquid conduction more uniform, which advantageously accelerates the distribution of the liquid and effectively avoids Due to the expansion of water absorption, the fluff pulp is pulled, and the user is distorted during the movement, so that the water absorbing group and other parts are caused by the uneven force and the difference in the squeezing and pulling force, which is caused by the winding, agglomeration, breakage, Defects such as delamination, breakage, or uneven liquid transport, relieve the user of the troubles caused by such problems.

 The processing method of the sanitary napkin with the novel absorbent layer according to the embodiment of the present invention is to complete the single-piece production of the sanitary napkin on the production line according to the method of the ordinary sanitary napkin, and to make the sanitary napkin by the sewing process such as quilting on the sanitary napkin production line. a sanitary napkin in which the absorbent layer is integrally formed into a mesh structure from the top layer to the bottom layer to form an integral absorbent layer;

It is also possible to separately prepare the fluff pulp layer of the absorbing layer, and through the sewing process such as quilting, the fluff pulp layer of the absorbing layer is sewed into a mesh structure, and then the transport layer and the absorbent paper layer are adhered to match the surface layer and the bottom layer. Processing to form a whole Absorbent layer sanitary napkin;

 It is also possible to form a plurality of fiber freezing points in the absorption layer by ultrasonic waves for the fibers in the absorption layer, and to separate the absorption layer into a plurality of network structures and fix them by means of the fiber freezing point.

 In summary, the sanitary napkin having the novel absorbent layer according to the embodiment of the present invention has the advantages of simple structure, economical and practical, safety, sanitation, and comfortable use, and the processing method according to the embodiment of the present invention. It has the characteristics of simple production process and high production efficiency. DRAWINGS

 1 is a schematic cross-sectional view showing a sanitary napkin having a novel absorbent layer according to Embodiment 1 of the present invention;

 2 is a schematic cross-sectional structural view of a sanitary napkin having a novel absorbent layer according to Embodiment 2 of the present invention;

 Figure 3 is a schematic view showing the structure of the surface of the absorbent layer of the sanitary napkin having the novel absorbent layer according to Embodiment 1 of the present invention; Figure 4 is a surface of the absorbent layer of the sanitary napkin having the novel absorbent layer according to Embodiment 3 of the present invention. Schematic diagram of the line structure;

 Fig. 5 is a view showing the structure of the sewing thread surface of the absorbent layer of the sanitary napkin having the novel absorbent layer according to the fourth embodiment of the present invention. In the picture:

 1-surface layer;

 2-transmission layer;

 3-fluff pulp layer;

 4-absorbent paper layer;

 5-bottom;

 6-polymer absorbent resin;

 7-Sewing thread. detailed description

 A sanitary napkin having a novel absorbent layer of the present invention will now be further described with reference to the accompanying drawings and specific embodiments.

 Example 1

Referring to Fig. 1, a sanitary napkin having a novel absorbent layer comprises a topsheet 1, an absorbent layer and a bottom layer 5, the absorbent layer being disposed between the topsheet 1 and the bottom layer 5, wherein the absorbent layer is interspersed with a plurality of A sewing thread for separating the absorbing layer into a plurality of mesh structures and fixing them. Example 2:

 Referring to Fig. 2, a sanitary napkin having a novel absorbent layer comprises a topsheet 1, an absorbent layer and a bottom layer 5, the absorbent layer being disposed between the topsheet 1 and the bottom layer 5, wherein the absorbent layer is interspersed with a plurality of The sewing thread is respectively connected to the upper layer of the upper layer of the absorption layer and the bottom layer of the bottom portion for separating the absorption layer into a plurality of network structures and fixing the absorption layer to the surface layer 1 and the bottom layer 5. Example 3:

 As shown in FIG. 1 and FIG. 3, a sanitary napkin having a novel absorbent layer comprises a topsheet 1, an absorbent layer and a bottom layer 5, the absorbent layer being composed of a fluff pulp layer 3, a transport layer 2 and an absorbent paper layer. 4, the polymer layer 6 is disposed in the fluff pulp layer 3, and the transport layer 2 and the absorbent paper layer 4 are respectively disposed on both sides of the fluff pulp layer 3, and the absorption layer is disposed between the top layer 1 and the bottom layer 5, and the absorption layer is interspersed There are a plurality of sewing threads 7 for separating the absorbing layer into a plurality of mesh structures and fixing them.

 In this embodiment, as shown in Fig. 1, the sewing thread 7 can penetrate only the pile layer 3 of the absorbent layer.

 In the present embodiment, the sewing thread 7 can fix the pile layer 3 of the absorbent layer through the sewing thread 7 so as not to be deformed when pressed by an external force. Example 4:

 As shown in Fig. 2, a sanitary napkin having a novel absorbent layer comprises a topsheet 1, an absorbent layer and a bottom layer 5, the absorbent layer being composed of a fluff pulp layer 3, a transport layer 2 and an absorbent paper layer 4, a pile A polymer absorbent resin 6 is disposed in the slurry layer 3, and a transport layer 2 and a water absorbent paper layer 4 are disposed on both sides of the fluff pulp layer 3, and an absorbent layer is disposed between the top layer 1 and the bottom layer 5, and a plurality of stitches are interposed in the absorption layer. Line 7, the sewing thread 7 is used to divide the absorbing layer into a plurality of mesh structures and fix them.

 The sewing thread 7 sequentially penetrates the top layer 1, the transport layer 2 at the upper portion of the absorbing layer, the fluff pulp layer 3 of the absorbing layer, the absorbent paper layer 4 and the bottom layer 5 at the lower portion of the absorbing layer, thereby bringing the top layer 1, the absorbing layer and the bottom layer 5 Fixed together.

 In the present embodiment, the sewing thread 7 can fix the top layer 1, the absorbent layer and the bottom layer 5 as a whole by the sewing thread 7, so that it does not deform when pressed by an external force. Example 5

 A sanitary napkin having a novel absorbent layer comprising a topsheet 1, an absorbent layer and a bottom layer 5, the absorbent layer being composed of a fluff pulp layer 3, a transport layer 2 and an absorbent paper layer 4, and a polymer layer in the fluff pulp layer 3 The absorbing resin 6 is provided with a transport layer 2 and a water absorbing paper layer 4 on both sides of the fluff pulp layer 3, and an absorbing layer is disposed between the top layer 1 and the bottom layer 5, and a plurality of sewing threads 7 are interposed in the absorbing layer, and the sewing is performed. Line 7 is used to divide the absorbent layer into a plurality of mesh structures and to fix them.

In this embodiment, as shown in Fig. 1, the sewing thread 7 can penetrate only the pile layer 3 of the absorbent layer. In the present embodiment, the sewing thread 7 can fix the pile layer 3 of the absorbent layer through the sewing thread 7 so as not to be deformed when pressed by an external force.

 The present embodiment is different from the embodiment 1 in that, as shown in Fig. 4, after the sewing thread 7 penetrates the pile layer 3, the sewing threads 7 of the same row are connected to each other.

 In the present embodiment, the sewing threads 7 of the same row are connected to each other, and the fixing effect of the sewing thread 7 can be enhanced. Example 6:

 A sanitary napkin having a novel absorbent layer comprising a topsheet 1, an absorbent layer and a bottom layer 5, the absorbent layer being composed of a fluff pulp layer 3, a transport layer 2 and an absorbent paper layer 4, and a polymer layer in the fluff pulp layer 3 The absorbing resin 6 is provided with a transport layer 2 and a water absorbing paper layer 4 on both sides of the fluff pulp layer 3, and an absorbing layer is disposed between the top layer 1 and the bottom layer 5, and a plurality of sewing threads 7 are interposed in the absorbing layer, and the sewing is performed. Line 7 is used to divide the absorbent layer into a plurality of mesh structures and to fix them.

 In this embodiment, as shown in Fig. 1, the sewing thread 7 can penetrate only the pile layer 3 of the absorbent layer.

 In the present embodiment, the sewing thread 7 can fix the pile layer 3 of the absorbent layer through the sewing thread 7 so as not to be deformed when pressed by an external force.

 This embodiment differs from the first embodiment in that, as shown in Fig. 5, after the sewing thread 7 penetrates the fluff pulp layer 3, the adjacent two sewing threads 7 are connected to each other, so that the sewing thread 7 is netted. The lattice shape enhances the fixing effect of the sewing thread 7. Example 7

 The processing method of a sanitary napkin having a novel absorbent layer is a step of dividing the fluff pulp layer 3 of the absorbent layer into a plurality of mesh structures and fixing them during the processing of the absorbent layer in the processing process of the existing sanitary napkin. .

 The specific steps include: See Figure 1.

 Step 1. Using the quilting sewing process, the fluff pulp layer 3 of the absorbing layer is added to the sewing thread 7, wherein the sewing thread 7 can penetrate only the fluff pulp layer 3 and are equidistantly arranged;

 Step 2. A dredging layer 2 is disposed on the upper portion of the fluff pulp layer 3, and an absorbent paper layer is disposed on the lower portion of the fluff pulp layer 3 to constitute a complete absorbent layer.

 In the present embodiment, the sewing thread 7 is a plurality of single wires passing through the pile layer 3, respectively, thereby separating the pile layer of the absorbent layer into a plurality of mesh structures and fixing them. Example 8

A processing method for a sanitary napkin having a novel absorbent layer is a step of dividing the absorbent layer into a plurality of mesh structures and fixing them during the processing of the absorbent layer in the processing of the existing sanitary napkin. The specific steps include: See Figure 2,

 Step 1. The dredging layer 2 is disposed on the upper portion of the fluff pulp layer 3, and the absorbent paper layer is disposed on the lower portion of the fluff pulp layer 3 to constitute a complete absorbent layer;

 Step 2: The velvet sewing process is used to add the fluff pulp layer 3 of the absorbing layer to the sewing thread 7, wherein the sewing thread 7 penetrates the fluff pulp layer 3 and extends in the upward and downward directions, respectively, upwardly through the fluff pulp layer 3 The dredging layer 2 and the top layer 1 disposed above pass down through the absorbent paper layer 4 and the bottom layer 5 below the pile layer 3, and the sewing threads 7 are equidistantly arranged.

 In this embodiment, the sewing thread 7 is a single single-line loop through the top layer 1, the dredging layer 2, the fluff pulp layer 3, the absorbent paper layer 4 and the bottom layer 5, thereby separating the fluff pulp layer of the absorbent layer into a plurality of nets. Structure and fixed. Example 9

 A processing method for a sanitary napkin having a novel absorbent layer is a step of dividing the absorbent layer into a plurality of mesh structures and fixing them during the processing of the absorbent layer in the processing of the existing sanitary napkin.

 In this embodiment, the step of dividing the absorption layer into a plurality of network structures and fixing is specifically: ultrasonically melting the fibers of the pile layer 3 in the absorption layer and solidifying, thereby forming a plurality of fiber freezing points, thereby absorbing the absorption layer. The fluff pulp layer 3 is divided into a plurality of mesh structures and fixed. The above-mentioned embodiments are only one of the more preferred embodiments of the present invention, and the usual variations and alternatives made by those skilled in the art within the scope of the present invention are included in the scope of the present invention.

Claims

Claim  A sanitary napkin having a novel absorbent layer, comprising a top layer, an absorbent layer and a bottom layer, wherein the absorbent layer is disposed between the top layer and the bottom layer, wherein the absorbent layer is interspersed with a plurality of sewing threads. The sewing thread is used to divide the absorbing layer into a plurality of mesh structures and fix them. 2. A sanitary napkin having a novel absorbent layer according to claim 1, wherein the sewing thread passes through the facing layer, the absorbent layer, the bottom layer, and connects the facing layer and the bottom layer, respectively, to form a unitary body. 3. A sanitary napkin having a novel absorbent layer according to claim 1, wherein the absorbent layer is composed of a fluff pulp layer and a dredging layer thereon and a lower absorbent paper layer, and the sewing thread passes through the fluff. The slurry layer is connected to the upper drainage layer and the lower absorbent paper layer, respectively. 4. A sanitary napkin having a novel absorbent layer according to claim 1, wherein the absorbent layer is composed of a fluff pulp layer and a dredging layer thereon and a lower absorbent paper layer, and the sewing thread only passes through The fluff pulp layer separates the fluff pulp layer into a plurality of mesh structures and is fixed. A sanitary napkin having a novel absorbent layer according to any one of claims 1 to 4, wherein said sewing thread is present in a single section. A sanitary napkin having a novel absorbent layer according to any one of claims 1 to 4, wherein the sewing threads are connected to each other. 7. A sanitary napkin having a novel absorbent layer comprising a topsheet, an absorbent layer and a bottom layer, the absorbent layer being disposed between the topsheet and the bottom layer, wherein the absorbent layer comprises a layer of fluff pulp and above The dredging layer and the underlying absorbent paper layer are formed, wherein a plurality of fiber freezing points are disposed in the fluff pulp layer, and the fiber freezing point is used for dividing the fluff pulp layer of the absorbing layer into a plurality of mesh structures and fixing. 8. A processing method for a sanitary napkin having a novel absorbent layer, characterized in that in the processing of the absorbent layer in the processing process of the existing sanitary napkin, the step of dividing the absorbent layer into a plurality of network structures and fixing them is added. , the steps specifically include: Step 1. Using a quilting sewing process, the fluff pulp layer of the absorbing layer is added to the sewing thread, wherein the sewing thread only penetrates the fluff pulp layer and is equidistantly arranged;  Step 2. A dredging layer is arranged on the upper part of the fluff pulp layer, and an absorbent paper layer is arranged on the lower part of the fluff pulp layer to form a complete absorbent layer. 9. A processing method for a sanitary napkin having a novel absorbent layer, characterized in that in the processing of the absorbent layer in the processing process of the existing sanitary napkin, the step of dividing the absorbent layer into a plurality of mesh structures and fixing them is added. The steps are specifically as follows: Step 1. A dredging layer is arranged on the upper part of the fluff pulp layer, and a water absorbent paper layer is arranged on the lower part of the fluff pulp layer to form a complete absorption layer;  Step 2: Using a quilting sewing process, the fluff pulp layer of the absorbing layer is added into the sewing thread, wherein the sewing thread penetrates the fluff pulp layer and extends in the upward and downward directions, respectively, and passes upward through the dredging layer disposed above the fluff pulp layer. And the top layer, down through the absorbent paper layer and the bottom layer below the fluff pulp layer, and the sewing threads are equidistantly arranged. A processing method for a sanitary napkin having a novel absorbent layer according to claim 8 or 9, wherein said sewing thread is present in a single section. A process for processing a sanitary napkin having a novel absorbent layer according to claim 8 or 9, wherein said sewing threads are connected to each other. 12. The processing method of a sanitary napkin having a novel absorbent layer according to claim 8, wherein the step is specifically:: ultrasonically melting the fibers in the pile layer of the absorbent layer and then solidifying, Thereby, a plurality of fiber freezing points are formed, thereby separating the fluff pulp layer of the absorbing layer into a plurality of network structures and fixing.