Composite nonwoven fabric with both breathability and comfort

Abstract

Provided is a composite nonwoven fabric having both air permeability and comfort. 【Solution means】The composite nonwoven fabric includes a porous layer 1 and a support layer 2 provided in close contact with one side of the porous layer. The number of layers of the support layer is 1 layer or at least 2 layers. The porous layer is provided with a plurality of air ventilation and flow guiding holes 3 penetrating both opposite surfaces of the porous layer. Each air ventilation and flow guiding hole presents a closed geometric shape, and the maximum dimension of each air ventilation and flow guiding hole is 2 mm or more. Both the porous layer and the support layer are composed of hot air nonwoven fabric. When used inside a sanitary product, excreta such as diarrhea feces and menstrual blood are discharged through the air ventilation and flow guiding holes of the porous layer and flow into the support layer, preventing direct contact between the excreta and the skin, improving the physical sensation of air permeability and comfort, and at the same time solving the problem of adhesive leakage due to large pore composite, preventing the occurrence of adhesive leakage. When used outside a sanitary product, it improves the air permeability of the whole product.

Description

Technical Field

[0001] The present invention relates to the field of non-woven fabric technology, and particularly to a composite non-woven fabric having both air permeability and comfort.

Background Art

[0002] The non-woven fabric industry, especially the non-woven fabric industry for sanitary products, has developed rapidly in recent years. With the development of non-woven fabric technology and the market demand for final products, especially in sanitary products such as baby diapers and feminine napkins, the requirements for the air permeability and comfort of non-woven fabrics have become increasingly high. Conventional non-woven fabrics have certain limitations in these aspects. It is mainly manifested in the following aspects. In baby diaper products, before the baby reaches one year old, basically excretes diarrhea feces. Therefore, it is difficult for conventional non-woven fabrics to ensure that diarrhea feces smoothly enter the non-woven fabric. As a result, diarrhea feces are in long-term and direct contact with the baby's skin, so the comfort is relatively poor, and it is easy to damage the baby's skin. In feminine napkin products, conventional non-woven fabrics make it difficult for menstrual blood to enter the non-woven fabric, and menstrual blood comes into contact with the skin, so it is easy to stick to the skin and the usability becomes poor. In addition, in order to improve the air permeability of the product, holes are made on the outside of diapers and sanitary napkins, but the traditional hole-making method has a small hole size, and the actual air permeability effect is limited.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The main object of the present invention is to provide a composite non-woven fabric having both air permeability and comfort to solve the problems of poor air permeability and comfort experienced when conventional non-woven fabrics are used in sanitary products.

Means for Solving the Problems

[0004] To solve the above problems, the present invention is realized as follows. It includes a porous layer and a support layer closely provided on one side of the porous layer. The number of layers of the support layer is one layer or at least two layers. The porous layer is provided with a plurality of ventilation and air guiding holes penetrating through both opposite surfaces of the porous layer. Each of the ventilation and air guiding holes presents a closed geometric shape, and the maximum dimension of each ventilation and air guiding hole is 2 mm or more. Both the porous layer and the support layer are composed of hot air non-woven fabric, and it is a composite non-woven fabric with both air permeability and comfort.

[0005] Among them, the porous layer and the support layer are fixedly connected by means of hot air adhesion. Among them, the ventilation and air guiding holes are formed in the porous layer by perforation or punching. Among them, the maximum dimension of the ventilation and air guiding holes is 5 mm or more. Among them, the closed geometric shape of the ventilation and air guiding holes is circular, elliptical, rectangular, or square. Among them, the closed geometric shape of the ventilation and air guiding holes is elliptical. Among them, as the hot air non-woven fabric, ES hot air cotton non-woven fabric is adopted. Among them, when the number of layers of the support layer is at least two layers, the two adjacent support layers are fixedly connected by means of hot air adhesion. Among them, the plurality of ventilation and air guiding holes are arranged in a plurality of rows, and the number of ventilation and air guiding holes per row is a plurality.

Effects of the Invention

[0006] In the present invention, the porous layer and the support layer are composed of hot air non-woven fabric. A plurality of ventilation and air guiding holes with large pore diameters of 2 mm or more are provided in the porous layer by punching. By fixedly connecting the porous layer with large pore diameters and the support layer as a composite non-woven fabric by means of hot air adhesion, excreta such as diarrhea feces and menstrual blood can be discharged through the ventilation and air guiding holes of the porous layer and flow into the support layer, preventing direct contact between the excreta and the skin, improving the user's physical sensation of air permeability and comfort, and at the same time solving the problem of adhesive leakage in conventional large-pore composites and preventing the occurrence of adhesive leakage. The composite non-woven fabric of the present invention can be applied to sanitary products. When used in the inner layer of sanitary products, the porous layer is located in the innermost layer, directly contacting the human skin, solving the problem of penetration of human excreta, quickly blocking contact with the skin, reducing the contact area, and maintaining skin health. In addition, when the present invention is used in positions such as the outer layer of diapers and the outer layer of sanitary napkins, the air permeability of the whole product can be improved.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0008] Hereinafter, the present invention will be described in more detail with reference to the drawings and specific embodiments. Hereinafter, the technical solutions in the embodiments of the present invention will be clearly and completely described in relation to the drawings of the embodiments of the present invention. In the following description, many specific details are described in order to fully understand the present invention, but the present invention can also be implemented using other methods with similar applications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0009] As shown in Figures 1 and 2, the composite non-woven fabric with both air permeability and comfort of the present invention includes a porous layer 1 and a support layer 2 provided in close contact with one side of the porous layer. The number of layers of the support layer 2 is 1 layer or at least 2 layers, and both the porous layer 1 and the support layer 2 are made of hot air non-woven fabric. In this embodiment, ES hot air cotton non-woven fabric is adopted as the hot air non-woven fabric. The porous layer 1 and the support layer 2 are fixedly connected by being adhered by hot air. Adhesion by hot air is a production method in which hot air penetrates the hot air non-woven fabric in a drying facility, heating and melting the internal adhesive fibers to achieve adhesion. The porous layer 1 is provided with a plurality of air ventilation holes 3 penetrating through both opposite surfaces of the porous layer 1, and the air ventilation holes 3 are formed in the porous layer 1 by drilling or punching. In this embodiment, the air ventilation holes 3 are formed in the porous layer 1 by punching. By being formed by punching, the realization of a large pore diameter of the air ventilation holes 3 can be further guaranteed, so that excrement is easily discharged from the air ventilation holes 3 with a large pore diameter. Each air ventilation hole 3 has a closed geometric shape, and the maximum dimension of each air ventilation hole 3 is 2 mm or more. In the multi-layer non-woven fabric used in conventional sanitary products, usually, holes are first punched in the non-woven fabric layer where holes need to be opened, and after the holes are opened, an adhesive is sprayed to composite with other non-woven fabric layers. In order to avoid the occurrence of adhesive leakage during the composite process, the dimension of the holes is generally in the range where the diameter is less than 1.5 mm. If it exceeds 1.5 mm, adhesive leakage is likely to occur, which will affect the use of the composite non-woven fabric. On the other hand, in the present invention, the porous layer 1 and the support layer 2 are composed of hot air non-woven fabrics. A plurality of air ventilation holes 3 with a large pore diameter having a maximum dimension of 2 mm or more are provided in the porous layer 1 by punching, and the porous layer 1 having a large pore diameter and the support layer 2 are fixedly connected by an adhesive method using hot air to form a composite non-woven fabric. When the composite non-woven fabric of the present invention is used inside a sanitary product, the porous layer 1 is arranged to be in close contact with the skin, so that excrement such as diarrhea feces and menstrual blood is discharged through the air ventilation holes 3 of the porous layer 1 and flows into the support layer 2, preventing direct contact between the excrement and the skin, improving the user's perception of breathability and comfort, and at the same time solving the problem of adhesive leakage caused by conventional large pore composites and preventing the occurrence of adhesive leakage.

[0010] The closed geometric shape of the air ventilation holes 3 may be circular, elliptical, rectangular, square, or an irregular geometric shape. Further, the maximum dimension of the air ventilation holes 3 may be 5 mm or more. In this embodiment, the maximum dimension of the air ventilation holes 3 refers to the distance between the two farthest points on the outer edge in the closed geometric shape of the air ventilation holes 3. It should be noted that "or more" in the present invention is equal to "equal to or more". In this embodiment, the closed geometric shape of the air-permeable diversion hole 3 is an ellipse, and the major axis (i.e., the maximum dimension) of the air-permeable diversion hole 3 is 5 mm or more. Among them, in one specific embodiment, the closed geometric shape of the air-permeable diversion hole 3 is an ellipse, the major axis of the air-permeable diversion hole 3 is 8 mm, and the minor axis is 3 mm. With such a large pore diameter, excrement can pass through more quickly and flow into the support layer 2, which can further improve the user's perception of air permeability and comfort. In one embodiment, the support layer 2 is one layer. In another embodiment, the number of layers of the support layer 2 is at least two layers, and the two adjacent support layers 2 are fixedly connected by adhesion with hot air.

[0011] In the present invention, a plurality of air-permeable diversion holes 3 are arranged in multiple rows, and the number of air-permeable diversion holes 3 in each row is plural. In one of its embodiments, all of the plurality of air-permeable diversion holes 3 exhibit elliptical holes. For each row of air-permeable diversion holes 3, the major axis direction of each air-permeable diversion hole 3 is perpendicular to the arrangement direction of each row of air-permeable diversion holes 3, and two adjacent rows of air-permeable diversion holes 3 are arranged in a staggered manner. Thereby, the lower air-permeable diversion holes 3 are arranged to intersect between the two air-permeable diversion holes 3 corresponding to the upper stage, so that as many air-permeable diversion holes 3 as possible can be installed on the porous layer 1 of the same area, and more rapid discharge of excrement can be realized.

[0012] The actual composite non-woven fabric developed by the applicant obtained good test effects in actual tests. The present invention can be applied to the inner layer of sanitary products such as diapers and sanitary napkins. By directly contacting the user's skin, the porous layer 1 allows excrement and the like to quickly enter the support layer 2 through the air-permeable diversion holes 3 and be isolated from the user's skin, so that the actual effect of the product can be enhanced, giving the user a new perception of air permeability and comfort, and further protecting health. In addition, the present invention can also be used for the outer layer of sanitary products. By arranging the porous layer 1 on the outermost layer, the air permeability of the whole product can be improved, and a new visual experience can also be given to consumers.

[0013] It is obvious that the above embodiments are only some embodiments of the present invention, not all embodiments. Based on the examples in the present invention, all other examples obtained by those skilled in the art without creative activities belong to the protection scope of the present invention.

Explanation of Reference Numerals

[0014] 1 porous layer 2 support layer 3 air ventilation and guiding hole

Claims

1. A porous layer; A support layer provided in close contact with one side of the porous layer, The number of layers of the support layer is one or at least two, the porous layer is provided with a plurality of air duct holes penetrating opposite surfaces of the porous layer, each of the air duct holes having a closed geometric shape, and each of the air duct holes has a maximum dimension of 2 mm or more; The porous layer and the support layer are both made of hot air nonwoven fabric. A composite nonwoven fabric that is both breathable and comfortable.

2. The porous layer and the support layer are fixed and connected by hot air bonding.

2. The composite nonwoven fabric according to claim 1, which has both breathability and comfort.

3. The air vent holes are formed in the porous layer by perforation or punching.

2. The composite nonwoven fabric according to claim 1, which has both breathability and comfort.

4. The maximum dimension of the air vent hole is 5 mm or more.

2. The composite nonwoven fabric according to claim 1, which has both breathability and comfort.

5. The closed geometric shape of the air flow hole is circular, elliptical, rectangular, or square; 2. The composite nonwoven fabric according to claim 1, which has both breathability and comfort.

6. The closed geometric shape of the air vent hole is an ellipse.

6. The composite nonwoven fabric according to claim 5, which has both breathability and comfort.

7. ES hot air cotton nonwoven fabric is used as the hot air nonwoven fabric.

2. The composite nonwoven fabric according to claim 1, which has both breathability and comfort.

8. When the number of layers of the support layer is at least two, the adjacent two support layers are fixed and connected by hot air bonding.

2. The composite nonwoven fabric according to claim 1, which has both breathability and comfort.

9. The plurality of air duct holes are arranged in a plurality of rows, and each row has a plurality of air duct holes.

2. The composite nonwoven fabric according to claim 1, which has both breathability and comfort.

Images