WO2023207449A1

WO2023207449A1 - Breast pad and preparation method

Info

Publication number: WO2023207449A1
Application number: PCT/CN2023/083213
Authority: WO
Inventors: 夏双印; 陈广岩; 刘立坚
Original assignee: 上海护理佳实业有限公司
Priority date: 2022-04-27
Filing date: 2023-03-22
Publication date: 2023-11-02
Also published as: CN114795662A; CN114795662B

Abstract

A breast pad, comprising a body (100) formed from a surface layer (11), an absorption layer (12), and a bottom layer (13). The surface layer (11) comprises a first notch portion (111); the absorption layer (12) comprises a second notch portion (121); the body (100) comprises a first bonding area (1061) which bonds the surface layer (11) and the bottom layer (13) in a curved shape concave towards a middle direction; the bottom layer (13) comprises a second bonding area (133); the body (100) forms a folding body (10) along a folding line (101); the second bonding area (133) is divided into a left side area and a right side area; the folding body (10) further comprises a second bonding portion (132) connecting the left side area and the right side area; the surface layer (11) of the folding body (10) is not fixedly connected, so that when the breast pad is unfolded and stressed, the inner surface layer (11) and the absorption layer (12) are wrapped by the bottom layer (13), and the surface layer (11) is prevented from being affected by a tension, thereby avoiding damage to the structure or preventing pores between fibers from becoming larger. The curved first bonding area (1061) forms a better closed effect, thereby reducing the precipitation of a polymer water-absorbing material from the surface layer (11). Meanwhile, the folding body (10) has higher bonding strength, lower damage probability of the bottom layer (13) or the surface layer (11), and is more comfortable to use. A preparation method for the breast pad is further provided.

Description

Breast pad and preparation method

Technical field

The present invention is in the field of absorbent articles, and specifically relates to a breast pad and a preparation method of the breast pad.

Background technique

Breast pads are a maternal and infant product that prevent lactating women from overflowing. As people's living standards continue to improve, more and more attention is paid to them. Breast pads need to be kept attached to the breasts when used. Since the breasts are hemispherical, Therefore, breast pads also need to be set into a hemispherical shape to adapt to the shape of the breast to improve comfort.

In order to achieve a hemispherical shape, people have developed some technologies, such as using thermally deformable materials such as polyethylene to form a flat circular material on the outer surface, heating the flat circular material and Pressing it onto a hemispherical mold for heating and molding will result in poor shape retention. Once the hemispherical shape is deformed, its fit will become worse and position deviation will occur. For example, in a circle, Both sides of the shaped or approximately circular product are provided with gathered portions made of elastomers such as rubber bands in their respective longitudinal directions, thereby forming a hemispherical shape with better shape retention, or a circular absorbent layer Cut along one radius or opposite sides, overlap the fan-shaped areas at the cutting position and form a hemispherical joint surface, or set a notch on one side or opposite sides of the absorbing layer, and cut the notch along the center line of the notch. The surface layers are connected in the direction of mutual adhesion, and the surface layers are combined to form a joint, thereby forming a hemispherical three-dimensional shape. However, this method has the following problems:

1. Due to the combination of surface layers, when the breast pad is opened so that the breast pad is hemispherical and the breast pad is attached to the breast, a pulling force will be exerted on the two opposite surface layers of the joint. , causing the surface layer adjacent to the joint area to be pulled, causing the surface layer material in this area to be damaged or the pores of the surface layer material to become larger, but at the same time, because this area usually corresponds to the position of the notch, at the concave end of this notch Due to the location very close to the absorption center and the stress during folding, the concave end of this notch is very prone to polymer precipitation. It is very easy for the overlay surface material to be damaged or the pores of the surface material to become larger. If polymers are precipitated through the top layer and are swallowed by the baby, there will be extremely serious safety risks, such as suffocation or difficulty breathing. Therefore, there is an urgent need for a milk that can avoid the above risks and be safer to use. pad;

2. Due to the need to combine the opposite surface layers, the currently available bonding methods are mainly heat sealing (hot melt or ultrasonic welding) or bonding. When heat sealing is used, the surface layer located on the inside of the breast pad needs to be melted to form a bond. However, Since there is a bottom layer in addition to the surface layer, on the one hand, the melting points between the bottom layer and the surface layer are inconsistent. When hot-melting the surface layer, it is very easy to cause problems such as melting of the bottom layer or insufficient connection strength between the surface layers. On the other hand, due to the existence of the bottom layer and the absorption layer, the surface layer is hot-melt connected, and the heating thickness is extremely large, so that The hot-melt connection requires higher energy or the processing difficulty increases. At the same time, because the bottom layer located on the outside contacts the heating body or welding head first, and the hot-melt surface layer through the bottom layer requires higher energy, further leading to the bottom layer being formed when the surface layer connection is formed. To prevent breakage, the adhesive method also needs to apply pressure on the bottom side to form a solid connection between the surface layer and the surface layer. However, if pressure needs to be applied to the opposite layer through the bottom layer, it will easily lead to stiffness in the area or also cause the bottom layer to become stiff. Breakage problem.

3. Due to the way the surface layers are connected, there are usually at least four or even six layers in this area, making this corner area very stiff and uncomfortable to use.

Contents of the invention

To this end, the present invention provides a breast pad to solve the above technical problems.

A breast pad includes a main body formed by laminating a top layer, an absorbent layer and a bottom layer. The top layer includes a first cutout portion that is recessed toward the middle of the body. The absorbent layer includes a recessed first cut portion that is recessed toward the middle of the body. The second cutout portion includes a first cutout outline, the second cutout includes a second cutout outline, and the body includes a first cutout outline, The first bonding area between the second incision contour lines, the first bonding area has a curved shape that is concave toward the middle direction, and the surface layer and the bottom layer are bonded along the curved first bonding area, and the The bottom layer includes a second bonding area located outside the first bonding area and corresponding to the first cutout. The body is folded along the first fold line in such a way that the surface layer becomes the inner surface to form a folded body. The first fold line passes through the second joining area and separates the second joining area into a left side area and a right side area. The folded body further includes a second joining part fixedly connecting the left side area and the right side area, and the In the above-mentioned folded body, the surface layer that becomes the inner surface does not form a fixed connection, and the second connecting portion does not extend to the surface layer.

Furthermore, the first cutout portion is gradually narrowed from the outer side to the middle direction of the body, and the second cutout portion is also gradually narrowed from the outer side to the middle direction. The first cutout portion is There is a pair of second cutouts, respectively located on opposite sides of the first fold line.

Furthermore, a third cutout portion is also provided on the second coupling area, so that the folded body forms a cut angle at the third cutout portion.

Further, the bottom layer includes a first bottom layer facing the absorption layer and a second bottom layer facing away from the absorption layer, wherein the surface layer is combined with the first bottom layer in the first bonding area, and the first bottom layer includes The notch area corresponding to the first cutout portion, the second bottom layer includes a second bonding area, and the second bonding portion is connected to the second The second bonding area of the bottom layer is located in the left area and the right area on both sides of the first fold line.

Further, the first bottom layer includes a first bottom layer contour line, the surface layer includes a first contour line, and the first bottom layer contour line coincides with the first contour line.

Further, the bottom layer includes a first bottom layer facing the absorbing layer and a second bottom layer facing away from the absorbing layer, wherein the surface layer in the first bonding area is combined with the first bottom layer, and the first bottom layer has a layer with the second bottom layer. The same third contour line of the bottom layer also includes a third bonding area outside the first bonding area for bonding the first bottom layer and the second bottom layer.

The present invention also provides a method for preparing breast pads to prepare the above-mentioned breast pads, which is characterized in that it includes:

Provide an absorbent layer, the absorbent layer includes a second cutout portion recessed toward the middle direction, the second cutout portion includes a second cutout contour line;

Provide a surface layer, and stack the absorbent layer on the surface layer. Before or after the absorbent layer is stacked on the surface layer, it also includes the step of forming a first cutout portion on the surface layer, wherein the first cutout portion faces the surface layer. The middle direction is recessed, the first cutout part and the second cutout part are arranged correspondingly, and the first cutout part includes a first cutout outline;

Covering the bottom layer, at least a part of the bottom layer covers the first cutout portion, the bottom layer includes a second bonding area, and the second bonding area is an area on the bottom layer corresponding to the first cutout portion;

Combining the surface layer and the bottom layer along the first bonding area between the first incision contour line and the second incision contour line;

Fold along a first fold line in such a way that the surface layer becomes the inner surface, the first fold line passes through the second bonding area and separates the second bonding area into a left side area and a right side area;

The left side area and the right side area are fixedly connected to form a second joint part.

The folded bodies are separated along a contour line forming the outer edge of the base layer.

Further, the surface layer is provided continuously, the absorption layer is stacked on the surface layer and the surface layer moves along the first movement direction, and the first cutout portions include a pair, and the pair of first cutout portions The connecting line is parallel to the first movement direction, and the first fold line coincides with the connecting line between the pair of first cutout portions.

providing a facing layer and laminating the absorbent layer on the facing layer, before or after laminating the absorbing layer on the facing layer, It also includes the step of forming a first cutout portion on the surface layer, wherein the first cutout portion is recessed toward the middle direction, and the first cutout portion and the second cutout portion are arranged correspondingly, and the first cutout portion includes First incision outline;

Separate the body along a contour line forming the outer edge of the ground floor;

Provide a surface layer and stack the absorbent layer on the surface layer;

Cover the first bottom layer;

Combine the surface layer and the bottom layer along a contour line on the outside of the absorbent layer;

A first notch is formed on the surface layer, and the monomer formed by the surface layer, the absorption layer and the first bottom layer is separated. The first notch is recessed toward the middle, and the first notch corresponds to the second notch. It is provided that the first cutout portion includes a first cutout contour line;

A second bottom layer is covered on the monomer, at least a part of the second bottom layer covers the first cutout, the second bottom layer includes a second bonding area, and the second bonding area is formed on the second bottom layer and The area corresponding to the first incision;

Fold along a first fold line in such a way that the surface layer becomes the inner surface, and the first fold line passes through the second bonding area;

Fixedly connecting the left side area and the right side area to form a second combination part;

The folded body is separated along a contour line forming the outer edges of the first bottom layer and the second bottom layer.

Beneficial effects: Embodiments of the present invention provide a breast pad, including a body formed by laminating a top layer, an absorbent layer, and a bottom layer. The top layer includes a first incision portion with a first incision contour line, and the absorbent layer includes a first incision portion with a first incision contour line. The second cutout portion of the two cutout contours is arranged corresponding to the first cutout portion, and the body includes a first knot The first joining area is in a curved shape that is concave toward the middle, and is combined with the bottom layer along the surface layer of the first joining area. The bottom layer includes a second joining area. The body forms a folded body along the first fold line, and the second joining area separates into a left side area and a right side area. The folded body also includes a second connecting portion connecting the left side area and the right side area, and the surface layer that becomes the inner surface of the folded body does not form a fixed connection, so that when used as a breast pad When unfolded to form a hemisphere or worn on the breast, the hemispherical structure is formed by wrapping the inner surface layer and absorbent layer with the bottom layer to prevent the surface layer from being affected by tension and causing the surface layer to be pulled and cause structural damage or fiber damage to the surface layer. The pores between them become larger and the curved first bonding zone forms a better sealing effect, thereby reducing the precipitation of polymer water-absorbing materials from the surface layer, and making the folded body have better bonding strength and lower damage to the bottom layer or surface layer. The present invention also adopts the preparation method of the breast pad.

Description of drawings

Figure 1 is a front view of the breast pad according to the first embodiment of the present invention;

Figure 2 is a schematic diagram of the breast pad unfolding in Figure 1;

Figure 3 is a schematic diagram of the A-A section in Figure 1;

Figure 4 is a schematic diagram of the B-B section in Figure 2;

Figure 5 is a schematic cross-sectional view of the breast pad A-A of the second embodiment;

Figure 6 is a schematic cross-sectional view of the breast pad B-B of the second embodiment;

Figure 7 is a front view of the breast pad of the third embodiment;

Figure 8 is a schematic cross-sectional view at C-C in Figure 7;

Figures 9-17 illustrate the steps for preparing breast pads according to the first embodiment;

Figures 18-26 illustrate another preparation step of the breast pad of the first embodiment;

Figures 27-35 illustrate the steps for preparing breast pads according to the second embodiment;

Figure 36 is a diagram illustrating the step of forming a notch in the preparation step of the breast pad according to the third embodiment.

Description of the component symbols in the diagram:

fold body 10;

Ontology 100, 400;

The first polyline 101;

Central 102;

first side 103;

second side 104;

The first joint part 105, 205, 405;

Surface layer 11, 21, 41;

first contour line 110, 210, 410;

first cutout portions 111, 211, 411;

Through hole 1110, 5110;

First incision outline 1111, 2111, 4111;

Absorption layer 12, 22, 42;

second contour line 120;

second cutout portions 121, 221, 421;

second incision outline 1211;

Bottom 13,23;

third contour line 130, 230, 330;

The third cutout portion 131;

the second joint part 132, 232, 332, 432;

first bottom layer 23a, 33a;

second bottom layer 23b, 33b;

The third joint part 306.

Detailed ways

Embodiments of the present invention provide a breast pad that can be easily unfolded into a hemispherical shape, can greatly reduce the precipitation of polymers in the surface layer 11, and is easy to use and easy to manufacture. The present application will be further described below with reference to the accompanying drawings.

At the same time, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the orientation or positional relationship shown in the drawings, and only It is intended to facilitate the description of the present invention and simplify the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

Please refer to the accompanying drawings 1-4. The breast pad provided by the first embodiment of the present application includes a body 100. The body 100 includes a top layer 11, a bottom layer 13, and an absorption layer sandwiched between the top layer 11 and the bottom layer 13. 12.

The surface layer 11 is disposed on the side close to the user's skin. Since it is in contact with the skin, It is preferred to use sheet-like materials with low irritation and softness, such as gauze, cotton, spunlace non-woven fabrics, hot-air non-woven fabrics and other sheet materials with a weight per unit area of 10-60g/m2. More preferably, they are made of thermoplastic Air-through non-woven fabric made of synthetic fibers.

As the synthetic fibers constituting the above-mentioned air-through non-woven fabric, polyolefin fibers such as polyethylene (PE) fibers and polypropylene (PP) fibers, polyester fibers, polyamide fibers such as nylon, etc. can be used. In some optional In embodiments, natural fibers or viscose fibers may also be added at the same time to further reduce irritation to the skin. These natural fibers may include wood fibers, cotton fibers, etc.

The absorbent layer 12 is disposed between the surface layer 11 and the bottom layer 13. Specifically, the absorbent layer 12 is composed of a number of fibers entangled and appropriately connected to form a three-dimensional network structure, with a number of pores distributed between the three-dimensional network structure. , a polymer water-absorbent material (SAP) is included between the three-dimensional network structure. Liquid can be absorbed and diffused through these pores, and liquid can be absorbed and retained by the polymer water-absorbent material. The fibers can be fluff pulp.

In some embodiments, the absorbent layer 12 also includes a coating layer that covers the three-dimensional network structure. The usual coating layer is configured on the upper and lower sides of the three-dimensional network structure to prevent the three-dimensional network structure from interfering with each other. The polymer water-absorbing material is precipitated to the surface of the absorption layer 12 through the pores and prevents the polymer water-absorbing material from being lost with the airflow under negative pressure during the manufacturing process of the absorption layer 12 and reducing the adsorption effect of the absorption layer 12 .

The bottom layer 13 is arranged on the side away from the user's skin. In order to prevent liquid from penetrating the top layer 11 and contaminating the user's clothes, the bottom layer 13 is usually a water-repellent material. Specifically, it can be a PE film or SMS. Non-woven fabrics, etc., preferably, the bottom layer 13 can allow gas, such as water vapor, to pass through, but liquid cannot pass through, so that it will not be stuffy during use.

The absorption layer 12 includes a second cutout portion 121 that is recessed toward the middle portion 102 of the body 100, and the surface layer 11 includes a first cutout portion 111 that is recessed toward the middle portion 102 of the body 100. The first cutout portion 111 is provided correspondingly to the second cutout 121, the absorbing layer 12 includes a second contour line 120, the surface layer 11 includes a first contour line 110, and the body 100 includes a second contour line located between the second contour line 120 and the first contour line 120. A body bonding area between contour lines 110, where the surface layer 11 and the bottom layer 13 are bonded.

The above-mentioned combination refers to the connection of the combined materials to form a whole. Generally, it can be formed by hot melting or bonding. Among them, hot melting can be done by heating the material itself to make it reach the melting point temperature. Molten, solidified and formed to form a connection, or through external energy such as ultrasonic waves The amount acts on the material, causing the material to locally melt at high temperature and form a connection after solidification.

In this embodiment, the body 100 and the absorbing layer 12 are both circular, and the opening of the second cutout 121 is gradually narrowing from the outside of the body 100 to the middle 102 , more specifically, it is roughly V-shaped. Of course, it is also possible that the second cutout 121 is U-shaped, semicircular, etc. Similarly, the opening of the first cutout 111 is also gradually narrowing from the outside to the middle 102 direction. The shape is also V-shaped. At the same time, the first cutout portion 111 and the second cutout portion 121 are provided correspondingly. The corresponding arrangement means that the position of the first cutout portion 111 and the position of the second cutout portion 121 are substantially the same. The opening directions are the same.

The second cutout portion 121 includes a second cutout outline 1211, and the first cutout portion 111 includes a first cutout outline 1111. It can be understood that the second cutout outline 1211 is the second outline 120. The first incision contour line 1111 is a part of the first contour line 110, and a first bonding area is included between the second contour line 120 and the first contour line 110. It can be understood that the first bonding area is in the form of The curved shape is concave toward the middle direction. At the same time, the first bonding area is part of the body bonding area. It can be understood that the surface layer 11 and the bottom layer 13 proceed along the curved first bonding area. combine.

It can be understood that the first bonding area includes a first bonding portion 105, and the first bonding portion 105 can extend outward to abut the first incision outline 1111, or be in contact with the first incision outline 1111. 1111 is in a separated state, and the first connecting portion 105 can extend inward to contact the second incision outline 1211, or be in a separated state from the second incision outline 1211. However, in order to make the polymer water-absorbing material To avoid leakage from the second cutout portion 121, preferably, the distance between the second cutout outline 1211 and the adjacent inner edge line of the first joint portion 105 is less than or equal to 5 mm.

Furthermore, the first bonding portion 105 is parallel to the second incision outline 1211, that is, the bonding area between the surface layer 11 and the bottom layer 13 is always equidistant from the edge of the absorption layer 12, which can further reduce the probability of precipitation of polymer water-absorbing materials. .

Furthermore, the side of the second incision outline 1211 toward the middle is an arc.

It can be understood that the body bonding area also includes a peripheral bonding area for bonding the surface layer 11 and the bottom layer 13 in the outer peripheral bonding area. In this embodiment, the outer peripheral bonding area and the first bonding area are connected end to end. A continuous annular strip is formed, that is, the surface layer 11 and the bottom layer 13 can be bonded roughly along the second contour line 111 of the surface layer 11 through the body bonding area.

It can be understood that since the top layer 11 is stacked on the absorbent layer 12 and the bottom layer 13, and the top layer 11 has the first cutout 111, the absorbent layer 12 has the second cutout 121, so that the bottom layer 13 is in contact with the first cutout. The area corresponding to 111 has a gap area, which is defined as the second bonding area. It can be understood that the second bonding area 132 is in an exposed state, and the second bonding area is located outside the first bonding area. , the outside refers to the side facing away from the middle,

Since the surface layer 11 , the absorption layer 12 and the bottom layer 13 are stacked to form the body 100 , the surface layer 11 has a first cutout 111 , the absorption layer 12 has a second cutout 121 , and the second cutout 121 has a second cutout outline. 1211 is located on the side of the first cutout contour line 1111 of the first cutout portion 111 toward the middle portion 102. The bottom layer 13 has a gap area in the area corresponding to the first cutout portion 111. This gap area is defined as the second bonding area. , it can be understood that the second bonding area is in an exposed state, and the second bonding area is located outside the first bonding area, and the outside refers to the side facing away from the middle part. In this embodiment , since the main body 100 is circular and the first cutout 111 is V-shaped, the notch area is generally a fan-shaped area.

The body 100 is folded along the first fold line 101 in such a way that the surface layer 11 becomes the inner surface, and the first fold line 101 separates the body 100 into a first side part 103 and a second side part 104. At the same time, The first fold line 101 passes through the second bonding area and divides the second bonding area into two areas. For convenience of description, the body 100 folded along the first fold line 101 will be called the folded body 10 in the following description. The second joint areas separated by the first fold line 101 are respectively called the left area and the right area. Generally, the first side part 103 and the second side part 104 are roughly equivalent, so that the formed folded body 10 can better form a hemisphere. In addition, it can be understood that the first fold line 101 passes through the second cutout 121 and the first cutout 111 .

In this embodiment, the second cutout portion 121 and the first cutout portion 111 are both V-shaped and include an apex toward the middle portion 102 , and the first fold line 101 passes through the second cutout portion 121 and the first cutout portion 111 . Cutting the vertex of the cutout 111, in a preferred embodiment, there is a pair of the second cutout 121 and the first cutout 111, which are respectively arranged on both sides of the body 100, and a virtual straight line connects the pair. The vertices of the second cutout portion 121, the vertices of the pair of first cutout portions 111, and the first polyline 101 are collinear with the virtual straight line.

The folded body 10 also includes a second joint part 132, which connects the left side area and the right side area. In fact, the second joint part 132 is located on both sides of the first fold line 101. A connection is formed between the bottom layers 13, and the connection is a fixed connection. Specifically, when the first side part 103 and the second side part 104 are folded along the first fold line 101 in such a way that the surface layer 11 becomes the inner surface. , the left side area and the right side area are also attached and overlapped in the direction of approaching each other, and the second connecting part 132 forms a fixed connection between the left side area and the right side area. The fixed connection refers to Located on the left side of both sides of the first polyline 101 The area and the right area are combined together by adhesion, heat sealing, mechanical action or friction. In this embodiment, by setting an adhesive on the corresponding bottom layer 13 of the left area and the right area, The fixed connection is achieved through the adhesion of adhesive. Of course, it can also be alone or further combined with ultrasonic welding to form a fixed connection between the bottom layers 13. It can be understood that the surface layer of the folded body 10 becomes the inner surface. 11 does not form a fixed connection. The meaning of not forming a fixed connection means that when the breast pad is unfolded, the opposite surface layers 11 are in a separated state, that is, there is no connection point between the surface layers 11 on both sides of the first fold line 101 after unfolding.

Furthermore, the second bonding area further includes a third cutout 131 , which is provided corresponding to the first cutout 111 . By providing the third cutout 131 , the foldable body 10 is positioned along the first cutout 131 . A fold line 101 forms cut corners on both sides, so that the unfolded breast pad forms a shape closer to a hemisphere, making it more comfortable to use.

The applicant’s research found that through the above settings, the following effects are achieved:

1. When the breast pad is unfolded to form a hemisphere or is worn on the breast, when the first side part 103 and the second side part 104 are subjected to tension that opens in both directions, this tension acts on the bottom layer 13, which is equivalent to forming The hemispherical structures are all composed of the bottom layer 13 wrapping the internal surface layer 11 and the absorption layer 12, thereby preventing the surface layer 11 from being affected by tension, causing the surface layer 11 to be pulled and causing structural damage or the pores between the fibers of the surface layer 11 to change. At the same time, because the first bonding area is in a curved shape that is concave toward the middle, the surface layer and the bottom layer are bonded along the curved first bonding area, that is, inside the first cutout, the surface layer and the bottom layer are bonded together. In order to be combined with and remain always adjacent to the edge of the absorbent layer, compared with breast pad products in the prior art, the breast pad of the present application can significantly reduce the precipitation of surface polymer materials, especially near the vertex of the second cutout 121 At this location, studies have shown that the number of particles of polymer water-absorbent material precipitated in this position is reduced by more than 80% on average, and at the same time, the average number of particles of polymer water-absorbent material precipitated is reduced by 67%;

2. When forming the second joint part, the bottom layer is bonded to the bottom layer. At the same time, there is only the same bottom layer material at the bonding position. The same bottom layer material has the same material properties, especially the same melting point, so that When forming the second joint part, the optimal melting point can be easily used for bonding, which greatly reduces the occurrence of material damage or poor bonding. According to actual measurements, the number of material breakage or poor bonding has been reduced by more than 30%;

3. Since only the two bottom layers are targeted when bonding at the second bonding part, that is, the thickness of the material at the bonding position is significantly reduced compared to the existing technology, making it easy to bond on the one hand, and on the other hand, it can reduce the energy required for bonding. Significantly reduced, especially when ultrasonic welding is used, it can form a better bonding effect and more low energy consumption;

4. Since there are only two bottom layers at the second joint part, this corner area can be made softer compared to the prior art, thereby improving the comfort of use.

Please refer to Figures 5 and 6 together. In the second embodiment of the present invention, the bottom layer 23 is a composite structure, including a first bottom layer 23a facing the absorption layer 22 and a second bottom layer 23b facing away from the absorption layer 22. Among them, the surface layer 21 and the first bottom layer 23a are combined in the first joint part 205. Inside the first cutout part 111, at least a part of the second bottom layer 23b is exposed. This part of the exposed second bottom layer 23b is It is the second bonding area. When folded along the first fold line, a fixed connection is formed between the second bottom layers 23b on both sides of the first fold line. The second bottom layers 23b on both sides of the first fold line are the left area and the right area. , that is, in this form, a fixed connection is formed between the second bottom layers 23b located on the outside, so that the formed hemispherical structure is equivalent to being wrapped by the second bottom layer 23b.

Further, the first bottom layer 23a includes a first bottom layer contour line, and the first bottom layer contour line coincides with the first contour line 210.

Furthermore, the first bottom layer 23a and the second bottom layer 23b are in a combined state. Generally, an adhesive can be provided between the first bottom layer 23a and the second bottom layer 23b, so that the first bottom layer 23a and the second bottom layer 23b are bonded. combine.

Please refer to Figures 7 and 8 together. In the third embodiment of the present invention, the bottom layer 33 is also a composite structure, including a first bottom layer 33a and a second bottom layer 33b. In this embodiment, in the first combination The surface layer is combined with the first bottom layer 33a. The first bottom layer 33a has the same third contour line 330 as the second bottom layer 33b. At the same time, a third joining portion 306 is also included outside the first joining portion 305, along the adjacent first joining portion 305. The first bottom layer 33a and the second bottom layer 33b are combined at the third contour line 330 of the first bottom layer 33a and the second bottom layer 33b. In this case, when the first bottom layer 33a is thinner, the second bottom layer can still be stably formed. Joint 332.

Please refer to Figures 9 to 17 to further describe the breast pad of the present invention in conjunction with the method of preparing the breast pad of the first embodiment.

S1: Provide the absorbing layer 12. The absorbing layer 12 includes a second cutout portion 121, and the second cutout portion 121 includes a second cutout contour line 1211.

In a preferred embodiment, the absorbent layer 12 can be formed by a molding device. These molding devices usually include a molding mold with a predetermined shape, and the molding mold is attached to a circular shape of a molding drum with negative pressure. On the peripheral surface, a feeding device transports water-absorbent fibers mixed with polymer water-absorbent materials. The predetermined shape is a hollow space corresponding to the shape of the absorption layer 12. The water-absorbent fibers mixed with polymer water-absorbent materials are accumulated in the hollow space under the action of negative pressure. The fibers are entangled in the space to form a three-dimensional network structure corresponding to the hollow space. The three-dimensional network structure is transferred out of the hollow space to form the absorption layer 12 with the second cutout 121 .

In another embodiment, a sheet-shaped absorbing layer can also be formed first, and a second incision portion is punched or cut on the sheet-shaped absorbing layer through a punching or cutting process. It is also possible to obtain a sheet-shaped absorbing layer with a second incision. Absorbent layer inside.

In addition, in some other embodiments, the coating layer can be pre-laid, and the three-dimensional network structure can be supported by the pre-laid coating layer, and the coating layer can be folded onto the three-dimensional network structure, or on the three-dimensional network structure. The network structure is then covered with a coating layer to form an absorption layer with a coating layer, and the absorption layer with the coating layer is punched or cut with a second cutout portion to form a second cutout portion. Absorbent layer with coating.

S2: Provide the surface layer 11, and stack the absorbent layer 12 on the surface layer 11, wherein before or after stacking the absorbent layer 12 on the surface layer 11, it also includes forming the first cutout 111 on the surface layer. In the step, the first cutout portion 111 includes a first cutout outline 1111 .

The surface layer 11 is continuously provided and transported in the downstream direction. The absorbent layer 12 is stacked on the surface layer 11 and is supported by the surface layer 11 and moves in the downstream direction along with the movement of the surface layer 11. This allows products to be processed or manufactured continuously.

Furthermore, before stacking the absorbent layer 12 on the surface layer 11, a process of spraying adhesive at a predetermined position is also included. It can be understood that the predetermined position is consistent with the location of the absorbent layer 12 stacked on the surface layer 11. The positions are corresponding, so that when the absorbent layer 12 is stacked on the surface layer 11 and moves or is processed along with the surface layer 11, it can be maintained in a predetermined position.

In other embodiments, other measures can also be taken to fix the relative position of the absorbent layer 12 and the surface layer 11 , for example, applying mechanical force to the surface layer 11 and the absorbent layer 12 so that the fibers between the surface layer 11 and the absorbent layer 12 are loosened. Entanglement, etc., the mechanical action can be pressing or puncture, etc.

It can be understood that when the surface layer 11 is provided and transported in the downstream direction, the surface layer 11 and the absorbent layer 12 supported on the surface layer 11 include the first movement direction, as in this embodiment. , the first movement direction is from left to right, the absorption layer 12 includes a pair of second cutout portions 121, a virtual connection line is included between the pair of second cutout portions 121, and the virtual connection line is The first direction of movement is parallel.

The first cutout portion 111 can be formed by passing the surface layer 11 through a hole with the first cutout portion. 111 is carried out with cutting knives of the same shape. Specifically, the cutting knife is set on the cutting knife roller, wherein the cutting knife roller includes an upper roller with a cutting knife and a lower roller matching the upper roller. The upper roller There is a slit between the lower roller and the surface layer 11. When the surface layer 11 passes through the slit, a cut corresponding to the shape of the cutter is formed on the surface layer 11. In this embodiment, the cutter is roughly prism-shaped. The annular shape includes two opposite side parts, which are the same as the first cutout outline 1111 , so that when the opposite layer 11 is cut, the first cutout part 111 is formed at the corresponding position.

It can be understood that in this embodiment, the cutter cuts between adjacent absorbent layers 12, so that when the cut surface layer 11 is removed, a through hole 1110 is formed through the surface layer 11. The through hole 1110 forms a first cutout portion 111 adjacent to the second cutout portions 121 of two adjacent absorbing layers 12 .

Of course, in some other embodiments, punching may also be used to form the first cutout on the surface layer.

And, in another embodiment, the first cutout portion may be formed on the surface layer first, and then the absorbent layer is stacked on the surface layer with the first cutout portion.

It can be understood that the step of forming the first cutout portion 111 can be arranged before or after stacking the absorbent layer 12 on the surface layer 11 .

S3: Cover the bottom layer 13.

It can be understood that the bottom layer 13 can be continuously covered on the surface layer 11 and the absorption layer 12 by the placement device, and a stacked structure of the surface layer 11, the absorption layer 12 and the bottom layer 13 from bottom to top is formed by covering the bottom layer 13. At the same time, In the area corresponding to the through hole 1110, the bottom layer 13 is exposed.

At the same time, before covering the bottom layer 13, it also includes spraying adhesive on a predetermined position of the bottom layer 13 so that the surface layer 11, the absorption layer 12 and the bottom layer 13 form a stable structure to prevent position changes during movement or subsequent processing.

S4: Bond the surface layer 11 and the bottom layer 13 along the first bonding area between the first incision contour line 1111 and the second incision contour line 1211 .

Typically, the structure of the surface layer 11, the absorbent layer 12 and the bottom layer 13 formed through step S3 is passed through a bonding pressure roller. The bonding pressure roller includes a bonding protrusion corresponding to the shape of the first bonding portion 105. Through the bonding protrusion The surface layer 11 and the bottom layer 13 are pressed together so that the surface layer 11 and the bottom layer 13 are fixed together.

It can be understood that the first joining portion 105 should pass between the second incision outline 1211 and the first incision outline 1111 to connect the surface layer between the second incision outline 1211 and the first incision outline 1111 11 is combined with the bottom layer 13.

S5: Fold along a first fold line 101 so that the surface layer 11 becomes the inner surface.

It can be understood that the surface layer 11 and the bottom layer 13 both have a width direction. When folding, they are folded along the width direction of the surface layer 11 and the bottom layer 13. In this embodiment, the folding process is performed in step S4 along the first fold line 101. The structure formed by the processing, more specifically, the first fold line 101 passes through the second cutout 121 and the first cutout 111, and is folded in such a way that the top layer 11 becomes the inner surface, that is, after folding, the top layer 11 is located on the folded body. 10, and the bottom layer 13 is located on the outside of the folded body 10.

When there is a pair of the second cutout portion 121 and the first cutout portion 111 and both have a vertex, the first fold line 101 passes through the vertices of the second cutout portion 121 and the first cutout portion 111 .

It can be understood that the folded state can be formed through a folding plate through step S5.

S6: Form the second coupling part 132.

It can be understood that after the folded body 10 is folded, the bottom layer 13 in the area corresponding to the first cutout 111 and located on both sides of the first fold line 101 will fit together. When an adhesive is provided on this area, Once fitted, a secure connection will be formed.

In other embodiments, hot melt or ultrasonic welding may be further used alone or together with an adhesive to further form a welding area in the second joint portion 132 to form a more stable fixed connection.

In a preferred embodiment, the welding zone is substantially strip-shaped, and the strip-shaped welding zone is substantially parallel to the first incision contour line 1111.

S7: Separate the folded body 10.

The structure processed in step S7 is passed through a slitting device. The slitting device has a cutter with a third contour line 130 as shown in Figure 16. When the structure passes through the slitting device, the structure is cut along the third contour line. 130, so that the folded body 10 is separated from the structure and forms the outer edge of the bottom layer.

It can be understood that at the same time or after the separation of the folded body 10 , the angle cutting process of the folded body 10 is also included.

Please refer to Figures 18 to 26 at the same time. In this embodiment, another method of forming the breast pad in the first embodiment is proposed. In this method, the folding direction will be perpendicular to the movement direction of the breast pad, specifically as follows description of.

S11: Provide an absorbing layer 42, which includes a second cutout 421.

The formation of the absorption layer 42 is the same as described above and will not be described again.

S12: Provide the surface layer 41, and stack the absorption layer 42 on the surface layer 41. Before or after stacking the absorption layer 42 on the surface layer 41, it also includes forming the first cutout 411 on the surface layer 41. step.

The surface layer 41 is continuously provided and transported in the downstream direction. The absorbent layer 42 is stacked on the surface layer 41 and is supported by the surface layer 41 and moves in the downstream direction along with the movement of the surface layer 41. Thereby, the product can be continuously processed or manufactured. At the same time, the surface layer 41 is provided and transported in the downstream direction. The surface layer 41 and the absorbent layer 42 placed on the surface layer 41 include a first Movement direction. In this embodiment, the first movement direction is from left to right. The absorption layer 42 includes a pair of second cutout portions 421. There is a virtual virtual space between the pair of second cutout portions 421. The virtual connection is perpendicular to the first direction of movement.

The first cutout portion 411 is formed on the surface layer 41 by a cutter. In this embodiment, since the connection line between the pair of second cutout portions 421 is perpendicular to the first movement direction, the cutter cuts along the arranged perpendicular to the first movement direction, and the cutter has a pair of sub-cutters, the outlines of the pair of sub-cutters correspond to the second cut outlines 4111 of the pair of first cut portions 411, so that in A pair of cuts are formed in the width direction of the surface layer 41 . It can be understood that the cuts form the first cutout 111 in a region adjacent to the second cutout 421 .

S13: Cover the bottom layer 43.

S14: Combine the surface layer and the bottom layer along the first bonding area between the first incision contour line and the second incision contour line.

Step S13 and step S14 are basically the same as the above and will not be described again.

S15: Separate the body 400.

The structure processed in step S15 is passed through a slitting device. The slitting device has a cutter with a first contour line 410 as shown in Figure 23. When the structure passes through the slitting device, the structure is cut along the first contour line. Slit 410 so that the body 400 is separated from the structure and forms the outer edge of the base layer.

S16: Fold along a first fold line so that the surface layer 41 becomes the inner surface.

Generally, the body 400 can be folded along the first fold line through a folding roller device.

S17: Form the second coupling part 432.

The step of forming the second coupling part 432 is basically the same as step S7 and will not be described again.

Please refer to Figures 27 to 35 at the same time. In this embodiment, a method for forming the breast pad in the second embodiment is proposed. Method, specifically as described below.

S21: Provide an absorption layer 22, which includes a second cutout 221.

S22: Provide the surface layer 21, and stack the absorption layer 22 on the surface layer 11.

S23: Cover the first bottom layer 23a.

S24: Combine the surface layer and the bottom layer along the first bonding area between the first incision contour line and the second incision contour line.

Step S21 and step S1, step S22 and step S2, step S23 and step S4, step S24 and step S5 are basically the same, and will not be described again here.

S25: Form the first cutout 211 on the surface layer 21, and separate the single body formed by the surface layer 21, the absorption layer 22 and the first bottom layer 23a.

It can be understood that in this embodiment, a cutting device is used to form the first incision portion 211 and at the same time separate the monomer formed by the surface layer 21, the absorbing layer 22 and the first bottom layer 23a from the continuous material. It can be understood that at this time, the slitting device has a cutter that is the same as the first contour line 210, so that the outer edge of the sheet-shaped unit formed after slitting is the first contour line 210.

S26: Cover the second bottom layer 23b.

The second bottom layer 23b is covered on the monomer, and the monomer is fixed on the second bottom layer 23b. It can be understood that the area of the second bottom layer 23b corresponding to the first cutout 211 is exposed.

In some other embodiments, the second bottom layer 23b can be laid first, and the monomer is stacked on the second bottom layer 23b. The monomer will move downstream along with the second bottom layer 23b, thereby facilitating continuous production.

It can be understood that in this way, before stacking the monomers, it also includes turning the monomers 180°, so that the first bottom layer 23a is located below and adheres to the second bottom layer 23b.

S27: Fold along a first fold line so that the surface layer 21 becomes the inner surface.

S28: Form the second coupling part 232.

S29: Separate the folded body.

Steps S27 and S6, S28 and S7, and S29 and S8 are basically the same. They are cut along a third contour line 230 to separate the folded body and form the outer edges of the first bottom layer and the second bottom layer. This is no longer necessary. Repeat.

In another embodiment, please refer to Figure 36 as well. In step 25, the monomer may not be separated, but a through hole 5110 similar to that in step S3 may be formed to form a first cutout. two The folded body in the second embodiment is formed after the processes of bottom layer, folding, forming the second joint part and separating the folded body.

The above descriptions are only embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the description and drawings of the present invention, or directly or indirectly applied to other related technologies fields are equally included in the scope of patent protection of the present invention.

Claims

A breast pad, characterized in that it includes a main body formed by laminating a top layer, an absorbent layer and a bottom layer. The top layer includes a first cutout that is recessed toward the middle of the body, and the absorbent layer includes a first cutout that is recessed toward the middle of the body. A second cutout portion is recessed in the middle direction of the body. The first cutout portion includes a first cutout outline. The second cutout portion includes a second cutout outline. The body includes a second cutout portion located on the first cutout. The first bonding area between the mouth contour line and the second incision contour line, the first bonding area is in a curved shape that is concave toward the middle direction, and is carried out along the surface layer and the bottom layer of the curved first bonding area. Combined, the bottom layer includes a second bonding area located outside the first bonding area and corresponding to the first incision, and the body is folded along the first fold line in such a way that the surface layer becomes the inner surface to form a folded body , the first fold line passes through the second joining area and separates the second joining area into a left side area and a right side area, and the folded body also includes a second joining part that fixedly connects the left side area and the right side area. , and the surface layer that becomes the inner surface of the folded body does not form a fixed connection, and the second connecting portion does not extend to the surface layer.
The breast pad according to claim 1, wherein the first cutout is gradually narrowed from the outside to the middle of the body, and the second cutout is also gradually narrowed from the outside to the middle. In the form, there is a pair of first cutout portions and a pair of second cutout portions, which are respectively located on opposite sides of the first fold line.
The breast pad according to claim 2, wherein a third cutout is further provided on the second joint area, so that the folded body forms a cut angle at the third cutout.
The breast pad of claim 1, wherein the bottom layer includes a first bottom layer facing the absorbent layer and a second bottom layer facing away from the absorbent layer, wherein the surface layer and the first bottom layer in the first bonding area The bottom layers are combined, the first bottom layer includes a notch area corresponding to the first cutout, the second bottom layer includes a second bonding area, and the second bonding portion is connected to the second bonding area of the second bottom layer at the first The left and right areas on both sides of the polyline.
The breast pad of claim 4, wherein the first bottom layer includes a first bottom layer contour line, the top layer includes a first contour line, and the first bottom layer contour line coincides with the first contour line.
The breast pad of claim 1, wherein the bottom layer includes a first bottom layer facing the absorbent layer and a second bottom layer facing away from the absorbent layer, wherein the surface layer and the first bottom layer in the first bonding area The bottom layers are bonded. The first bottom layer has the same third contour line as the second bottom layer. A third bonding area is also included outside the first bonding area for combining the first bottom layer and the second bottom layer.
A method for preparing a breast pad, used to prepare the breast pad according to claim 1, characterized in that: include:

Provide an absorbent layer, the absorbent layer includes a second cutout portion recessed toward the middle direction, the second cutout portion includes a second cutout contour line;

Provide a surface layer, and stack the absorbent layer on the surface layer. Before or after the absorbent layer is stacked on the surface layer, it also includes the step of forming a first cutout portion on the surface layer, wherein the first cutout portion faces the surface layer. The middle direction is recessed, the first cutout part and the second cutout part are arranged correspondingly, and the first cutout part includes a first cutout outline;

Covering the bottom layer, at least a part of the bottom layer covers the first cutout portion, the bottom layer includes a second bonding area, and the second bonding area is an area on the bottom layer corresponding to the first cutout portion;

Combining the surface layer and the bottom layer along the first bonding area between the first incision contour line and the second incision contour line;

Fold along a first fold line in such a way that the surface layer becomes the inner surface, the first fold line passes through the second bonding area and separates the second bonding area into a left side area and a right side area;

The left side area and the right side area are fixedly connected to form a second joint part.

The folded bodies are separated along a contour line forming the outer edge of the base layer.
The method of preparing a breast pad according to claim 7, wherein the top layer is provided continuously, the absorbent layer is stacked on the top layer and moves along the first movement direction with the top layer, and the first There is a pair of cutout parts, a connection line between the pair of first cutout parts is parallel to the first movement direction, and the first fold line coincides with a connection line between the pair of first cutout parts.
A method for preparing breast pads, used to prepare the breast pads as claimed in claim 1, characterized in that:

Provide an absorbent layer, the absorbent layer includes a second cutout portion recessed toward the middle direction, the second cutout portion includes a second cutout contour line;

Provide a surface layer, and stack the absorbent layer on the surface layer. Before or after the absorbent layer is stacked on the surface layer, it also includes the step of forming a first cutout portion on the surface layer, wherein the first cutout portion faces the surface layer. The middle direction is recessed, the first cutout part and the second cutout part are arranged correspondingly, and the first cutout part includes a first cutout outline;

Covering the bottom layer, at least a part of the bottom layer covers the first cutout portion, the bottom layer includes a second bonding area, and the second bonding area is an area on the bottom layer corresponding to the first cutout portion;

Combining the surface layer and the bottom layer along the first bonding area between the first incision contour line and the second incision contour line;

Separate the body along a contour line forming the outer edge of the ground floor;

Fold along a first fold line in such a way that the surface layer becomes the inner surface, the first fold line passes through the second bonding area and separates the second bonding area into a left side area and a right side area;

The left side area and the right side area are fixedly connected to form a second joint part.
A method for preparing breast pads, used to prepare the breast pads as claimed in claim 4, characterized in that:

Provide an absorbent layer, the absorbent layer includes a second cutout portion recessed toward the middle direction, the second cutout portion includes a second cutout contour line;

Provide a surface layer and stack the absorbent layer on the surface layer;

Cover the first bottom layer;

Combine the surface layer and the bottom layer along a contour line on the outside of the absorbent layer;

A first notch is formed on the surface layer, and the monomer formed by the surface layer, the absorption layer and the first bottom layer is separated. The first notch is recessed toward the middle, and the first notch corresponds to the second notch. It is provided that the first cutout portion includes a first cutout contour line;

A second bottom layer is covered on the monomer, at least a part of the second bottom layer covers the first cutout, the second bottom layer includes a second bonding area, and the second bonding area is formed on the second bottom layer and The area corresponding to the first incision;

Fold along a first fold line in such a way that the surface layer becomes the inner surface, and the first fold line passes through the second bonding area;

Fixedly connecting the left side area and the right side area to form a second combination part;

The folded body is separated along a contour line forming the outer edges of the first bottom layer and the second bottom layer.