A cotton-like structure, quick-absorbing and diverting nonwoven fabric surface layer

Abstract

This utility model discloses a cotton-like structure fast-absorbing and diverting nonwoven fabric. The main body of the nonwoven fabric includes a fast-absorbing layer, a diverting layer, and an anti-backflow layer stacked from top to bottom. Through a hot-pressing molding process, a permeation zone and an arc-shaped diversion zone are formed on the surface of the fast-absorbing layer. The permeation zone is composed of several permeation holes. The permeation zone and the arc-shaped diversion zone are arranged alternately in a honeycomb array to ensure rapid liquid dispersion and avoid local liquid accumulation on the surface. The diversion layer plays a guiding role for the liquid permeating along the permeation zone, and rapidly disperses the liquid along the length and width of the diversion layer. The multi-layer synergistic effect significantly improves the liquid absorption speed and reduces the time of skin contact with liquid. The design of the bottom anti-backflow layer ensures that it remains dry even after long-term use.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric technology, specifically to a cotton-like structure fast-absorbing and diverting surface layer nonwoven fabric. Background Technology

[0002] Nonwoven fabric is a type of fabric that does not require spinning or weaving. It is made by arranging short or long textile fibers in a directional or random manner to form a web structure, which is then reinforced by mechanical, thermal bonding, or chemical methods. Nonwoven fabric can be used as the fabric for absorbent products.

[0003] The top layer is an indispensable and important component of the entire absorbent product. It comes into contact with the human body during use, and excreted urine is the first thing to come into contact with the top layer. Therefore, the permeability and flow-through properties are important criteria for determining whether the top layer is suitable for absorbent products. However, the breathability and permeability of current nonwoven fabrics are generally not good.

[0004] Current hygiene product surface materials mostly employ a single drainage hole or a simple geometric arrangement of pores, resulting in limited liquid dispersion efficiency and a tendency to cause localized stagnation, leading to a damp feeling and discomfort. Therefore, there is an urgent need for a surface material that achieves efficient diversion and rapid absorption through structural optimization. Utility Model Content

[0005] To address the technical deficiencies in the background technology, this utility model proposes a cotton-like structure quick-absorbing and diverting nonwoven fabric surface layer, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:

[0006] A cotton-like structure fast-absorbing and diversion surface layer nonwoven fabric includes a nonwoven fabric body, wherein the nonwoven fabric body includes a fast-absorbing layer, a diversion layer and an anti-backflow layer stacked and compounded from top to bottom;

[0007] The fast-absorbing layer is composed of several interwoven surface fibers and has several permeation zones in its thickness direction. Between two adjacent permeation zones, there is an arc-shaped guide zone extending towards the outside of the nonwoven fabric body.

[0008] The diversion layer is composed of several interwoven flow-guiding fibers, and the end face of the diversion layer that is attached to the fast-absorption layer is provided with several flow-guiding grooves, the positions of which correspond to the positions of the permeation zone.

[0009] The anti-reverse osmosis layer is composed of interwoven bicomponent fibers, which include a hydrophilic core layer and a hydrophobic skin layer covering the outer surface of the hydrophilic core layer.

[0010] As an improvement to the above solution, the surface fiber is a fine denier fiber, and the fast-absorbing layer and the distribution layer are combined by ultrasonic waves to form several sets of imprinted areas on the surface of the fast-absorbing layer.

[0011] As an improvement to the above solution, the surface of the fast-absorption layer is pressed and punctured to form several permeation zones, each permeation zone consisting of several permeation holes, with the surface between two adjacent permeation holes bulging upwards.

[0012] As an improvement to the above solution, the permeation hole includes a conical hole and a straight hole arranged from top to bottom. The conical hole is provided at one end of the permeation hole corresponding to the outer surface of the fast absorption layer, and the straight hole is provided at the end of the permeation hole near the diversion layer.

[0013] As an improvement to the above scheme, the surface of the diversion layer is hot-pressed to form several staggered flow channels, the intersection of two adjacent flow channels corresponds to the position of the permeation zone, and the cross-sectional shape of the flow channels is V-shaped.

[0014] As an improvement to the above solution, the hot air treatment of the anti-reverse osmosis layer forms bonding points at the intersections of the bicomponent fibers and micropores between two adjacent bicomponent fibers.

[0015] The beneficial effects of this invention are as follows: by using a hot-press molding process, a permeation zone and an arc-shaped flow guiding zone are formed on the surface of the fast-absorbing layer. The permeation zone is composed of several permeation holes, and the permeation zone and the arc-shaped flow guiding zone are arranged alternately in a honeycomb array to ensure rapid dispersion of liquid and avoid local accumulation of liquid on the surface. The flow distribution layer plays a guiding role for the liquid permeating along the permeation zone, and rapidly disperses the liquid along the length and width of the flow distribution layer. The multi-layer synergistic effect significantly improves the liquid absorption speed and reduces the time of skin contact with liquid. The design of the bottom anti-backflow layer can ensure that it remains dry even after long-term use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the nonwoven fabric of this utility model.

[0017] Figure 2 This is a schematic diagram of the distribution structure of the internal guide grooves in the nonwoven fabric body of this utility model.

[0018] Figure 3 This is a schematic diagram of the surface structure of the diversion layer of this utility model.

[0019] Figure 4 This is a schematic diagram of the nonwoven fabric body structure in the thickness direction of this utility model.

[0020] Figure 5 for Figure 4 Enlarged schematic diagram of part A in the middle.

[0021] Figure 6 This is a schematic diagram of the structure of the bicomponent fiber of this utility model.

[0022] Figure 7This is a schematic diagram showing the bonding points and micropore locations of the anti-reverse osmosis layer of this utility model.

[0023] Among them: non-woven fabric body 1, quick-absorbing layer 2, flow distribution layer 3, flow guide groove 31, anti-reverse seepage layer 4, hydrophilic core layer 41, hydrophobic skin layer 42, bonding point 43, micropore 44, permeation zone 5, permeation hole 51, conical hole 52, straight hole 53, arc-shaped flow guide zone 6, embossing zone 7. Detailed Implementation

[0024] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples. The embodiments of this utility model are not limited to the following examples, and this utility model relates to relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0025] like Figure 1 As shown, a cotton-like structure quick-absorbing and diverting nonwoven fabric includes a nonwoven fabric body 1. The nonwoven fabric body 1 includes a quick-absorbing layer 2, a diverting layer 3, and an anti-backflow layer 4 stacked sequentially from top to bottom. The design of the permeation zone 5 allows liquid to quickly penetrate into the interior when it comes into contact with the quick-absorbing layer 2, avoiding liquid retention on the surface. The diverting layer 3 is located below the quick-absorbing layer 2 and uses the guide channel 31 to disperse and guide the liquid, ensuring its uniform distribution within the nonwoven fabric body 1. The bottom anti-backflow layer 4 effectively prevents the absorbed liquid from flowing back to the surface, thereby ensuring dryness and comfort after long-term use.

[0026] In the technical solution of the fast-absorbing layer 2 of this utility model, the fast-absorbing layer 2 is composed of several interwoven surface fibers, and several permeation zones 5 are provided in its thickness direction. Between two adjacent permeation zones 5, there is an arc-shaped guide zone 6 extending towards the outside of the nonwoven fabric body 1. The design of the arc-shaped guide zone 6 can guide the liquid in contact with the fast-absorbing layer 2 to flow smoothly along the arc of the arc-shaped guide zone 6 to the permeation zones 5 on both sides, further accelerating the absorption and dispersion process of the liquid. In addition, the setting of the arc-shaped guide zone 6 can also effectively reduce the accumulation of liquid in the fast-absorbing layer 2 and improve the overall absorption efficiency.

[0027] It should be noted that the surface fiber is a fine denier fiber, which can provide a good tactile feel when in contact with the human body. The fast-absorbing layer 2 and the distribution layer 3 are composited by ultrasonic waves, thereby forming several sets of embossed areas 7 on the surface of the fast-absorbing layer 2. The embossed areas 7 can not only enhance the bonding force between the fast-absorbing layer 2 and the distribution layer 3, but also increase the overall strength of the nonwoven fabric body 1 to a certain extent.

[0028] Meanwhile, the presence of the imprinted area 7 enhances the curvature of the arc-shaped guide area 6, resulting in a better tactile experience when in contact with the human body during use, further enhancing the liquid absorption performance and diversion effect, and ensuring comfort and stability after long-term use.

[0029] It should be noted that the surface of the quick-absorbing layer 2 is press-pressed and punctured to form several permeation zones 5. Each permeation zone 5 is composed of several permeation holes 51, and the surface between two adjacent permeation holes 51 is raised upwards. The permeation holes 51 are formed by hot-pressing and puncturing. The bulge between two adjacent permeation holes 51 increases the three-dimensionality and layering of the non-woven fabric body 1. It can also help the liquid enter the quick-absorbing layer 2 more quickly through the permeation holes 51 when absorbing liquid. When the raised surface comes into contact with the skin, it can reduce the direct contact area with the skin, thereby reducing stickiness and improving the user's comfort. In addition, the edges of the permeation holes 51 formed by hot-pressing and puncturing are flat and are less likely to cause skin irritation.

[0030] In the technical solution of the permeation hole 51, the permeation hole 51 includes a conical hole 52 and a straight hole 53 arranged from top to bottom. The permeation hole 51 is provided with the conical hole 52 at one end corresponding to the outer surface of the fast absorption layer 2, and the permeation hole 51 is provided with the straight hole 53 at one end near the diversion layer 3. The conical surface of the conical hole 52 increases the contact area between the liquid and the fast absorption layer 2, and at the same time allows the liquid to pass through the straight hole 53 quickly.

[0031] like Figure 2 and Figure 3 As shown, in the technical solution of the diversion layer 3 of this utility model, the diversion layer 3 is composed of several interwoven flow guiding fibers. The end face of the diversion layer 3 that is attached to the fast absorption layer 2 is provided with several flow guiding grooves 31. The position of the flow guiding grooves 31 corresponds to the position of the permeation zone 5. Several interleaved flow guiding grooves 31 are formed by hot pressing on the surface of the diversion layer 3. The intersection point of two adjacent flow guiding grooves 31 corresponds to the position of the permeation zone 5. The cross-sectional shape of the flow guiding grooves 31 is V-shaped.

[0032] It should be noted that the flow guide 31 extends along the length of the flow distribution layer 3, and both ends of the flow guide 31 are connected to the permeation zone 5. After the liquid permeates downward along the permeation zone 5, the flow guide 31 guides the liquid. After the liquid flows along the length of the flow guide 31, it is dispersed in the flow distribution layer 3, ensuring its uniform distribution in the nonwoven fabric body 1.

[0033] In the technical solution of the anti-backflow layer 4 of this utility model, the anti-backflow layer 4 is composed of interwoven bicomponent fibers. The bicomponent fibers include a hydrophilic core layer 41 and a hydrophobic skin layer 42 covering the outer surface of the hydrophilic core layer 41. The anti-backflow layer 4 is hot-air treated to form bonding points 43 at the intersections of the bicomponent fibers and to form micropores 44 between two adjacent bicomponent fibers. After hot air treatment, the surface of the anti-backflow layer 4 forms densely packed breathable micropores 44, ensuring air circulation and improving user comfort. The mixing ratio of the hydrophilic core layer 41 and the hydrophobic skin layer 42 is optimized to maintain breathability while locking in water and preventing liquid backflow.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A cotton-like structure, quick-absorbing and diverting nonwoven fabric for the surface layer, characterized in that, It includes a nonwoven fabric body (1), which includes a fast-absorbing layer (2), a diversion layer (3) and an anti-backflow layer (4) stacked from top to bottom. The fast-absorbing layer (2) is composed of several surface fibers interwoven together, and several permeation zones (5) are provided in its thickness direction. An arc-shaped guide zone (6) extending towards the outside of the nonwoven fabric body (1) is provided between two adjacent permeation zones (5). The diversion layer (3) is composed of several interwoven diversion fibers. The end face of the diversion layer (3) that is attached to the fast absorption layer (2) is provided with several diversion grooves (31). The position of the diversion grooves (31) corresponds to the position of the permeation zone (5). The anti-reverse osmosis layer (4) is composed of interwoven bicomponent fibers, which include a hydrophilic core layer (41) and a hydrophobic skin layer (42) covering the outer surface of the hydrophilic core layer (41).

2. The cotton-like quick-absorbing and diverting nonwoven fabric with a cotton-like structure according to claim 1, characterized in that, The surface fiber is a fine denier fiber. The fast-absorption layer (2) and the diversion layer (3) are combined by ultrasonic waves, thereby forming several sets of imprinted areas (7) on the surface of the fast-absorption layer (2).

3. The nonwoven fabric with a cotton-like structure and fast absorption / diversion surface layer according to claim 1, characterized in that, The surface of the fast-absorbing layer (2) is pressed and punctured to form several permeation zones (5), each permeation zone (5) consisting of several permeation holes (51), with the surface between two adjacent permeation holes (51) bulging upwards.

4. The cotton-like structure quick-absorbing and diverting nonwoven fabric according to claim 3, characterized in that, The permeation hole (51) includes a conical hole (52) and a straight hole (53) arranged from top to bottom. The conical hole (52) is provided at one end of the permeation hole (51) corresponding to the outer surface of the fast absorption layer (2), and the straight hole (53) is provided at one end of the permeation hole (51) near the diversion layer (3).

5. The cotton-like quick-absorbing and diverting nonwoven fabric with a cotton-like structure according to claim 1, characterized in that, The surface of the diversion layer (3) is hot-pressed to form several staggered flow channels (31). The intersection of two adjacent flow channels (31) corresponds to the position of the permeation zone (5). The cross-sectional shape of the flow channel (31) is V-shaped.

6. The cotton-like quick-absorbing and diverting nonwoven fabric with a cotton-like structure according to claim 1, characterized in that, The anti-reverse osmosis layer (4) is hot-air treated to form bonding points (43) at the intersection of the bicomponent fibers and to form micropores (44) between two adjacent bicomponent fibers.

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