CN211535188U

CN211535188U - Novel liquid-permeable fiber non-woven fabric

Info

Publication number: CN211535188U
Application number: CN201921170187.4U
Authority: CN
Inventors: 黄清山
Original assignee: Nanliu Enterprise Pinghu Co ltd
Current assignee: Nanliu Enterprise Pinghu Co ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-09-22
Anticipated expiration: 2029-07-24

Abstract

The utility model provides a novel liquid permeability fiber non-woven fabrics, including last fibrous layer, non-woven fabrics layer and lower fibrous layer, it includes the hydrophobic fiber to go up the fibrous layer, the fibrous layer includes hydrophilic fiber down, all be provided with the stamp structure about the non-woven fabrics layer, the stamp structure includes the square stamp unit of a plurality of equipartition, the non-woven fabrics layer is provided with the hole of permeating water at the center of stamp unit, the circumference in hole of permeating water is provided with four fish shape indent that are circular array distribution, fish shape indent includes the head, belly and tail fin portion, the head is connected with the hole of permeating water, tail fin portion towards the corner of stamp unit and with the corner formation sector of stamp unit, the initiating terminal of tail fin portion is less than the sector, the fish shape indent becomes gradually to the degree of depth of head from tail fin portion to be smooth transition with the hole of permeating water. The liquid on the upper fiber layer in the device has high downward permeation speed, can keep a dry and comfortable state, has high comfort level, reasonable design and simple structure, and is suitable for large-scale popularization.

Description

Novel liquid-permeable fiber non-woven fabric

Technical Field

The utility model belongs to the technical field of the non-woven fabrics, especially, relate to a novel liquid permeability fiber non-woven fabrics.

Background

The non-woven fabric is a non-woven fabric which is formed by directly utilizing high polymer slices, short fibers or filaments to form a net through air flow or machinery, then carrying out spunlace, needling or hot rolling reinforcement, and finally carrying out after-treatment. Its advantages are no generation of fibre filings, high toughness, high durability, soft silk, and high strength and cotton feeling. Liquid-permeable fibrous nonwoven fabrics are used as a topsheet for disposable liquid-absorbent articles such as diapers and sanitary napkins, and liquid is absorbed by the core of the diaper or sanitary napkin after penetrating the nonwoven fabric.

The conventional liquid-permeable nonwoven fabric generally comprises three layers, i.e., an upper fibrous layer, a nonwoven fabric layer, and a lower fibrous layer. Wherein, go up fibrous layer direct contact human skin, also be close skin layer, liquid is when penetrating this layer of non-woven fabrics, and moisture can't be absorbed by the polymer completely, and the liquidity of current non-woven fabrics is also relatively poor moreover, and the most direct phenomenon is that, the health supplies's that adopts this non-woven fabrics humidity is great, influences the use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that above-mentioned non-woven fabrics exists, provide a reasonable in design, simple structure, the good and dry and comfortable degree high novel liquid permeability fiber non-woven fabrics in close skin surface of liquid permeability.

In order to achieve the above object, the technical solution adopted by the present invention is that, the present invention provides a novel liquid-permeable fiber non-woven fabric, which comprises an upper fiber layer, a non-woven fabric layer and a lower fiber layer stacked up from top to bottom, wherein the upper fiber layer comprises hydrophobic fibers, the lower fiber layer comprises hydrophilic fibers, the upper and lower surfaces of the non-woven fabric layer are all provided with a printing structure, the printing structure comprises a plurality of uniformly distributed square printing units, the non-woven fabric layer is provided with a water permeable hole at the center of the printing units, the circumference of the water permeable hole is provided with four fish-shaped press grooves distributed in a circular array, the fish-shaped press grooves comprise a head, an abdomen and a tail fin, the head is connected with the water permeable hole, the tail fin faces to the corner of the printing units and forms a sector area of 90 degrees with the corner of the printing units, the starting end of the tail fin is lower than the sector, the depth of the fish-shaped pressure groove from the tail fin part to the head part is gradually increased to form smooth transition with the water permeable hole.

Preferably, the non-woven fabric layer comprises two layers of non-woven fabrics which are stacked, one side of the non-woven fabrics is provided with a printing structure, the other side of the non-woven fabrics is of a plane structure, and the plane structures of the two layers of non-woven fabrics are connected into a whole after being butted.

Preferably, the aperture of the water permeable hole accounts for 1/8-1/4 of the side length of the printing unit.

Preferably, the fish-shaped pressure tank occupies 1/3-1/2 of the area of the printing unit.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

the utility model provides a novel liquid permeability fiber non-woven fabrics, can obtain the stamp structure similar with the non-woven fabrics layer after upper and lower fibrous layer and non-woven fabrics hot briquetting, make the liquid on the upper fibrous layer can penetrate the upper fibrous layer and move to the hole of permeating water along the fish-shaped indent of non-woven fabrics layer under its dead weight, and then enter into the lower fibrous layer through the hole of permeating water and carry out the diffusion, liquid infiltration and diffusion rate are fast, thus make the close skin face of this device namely the upper fibrous layer keep dry and comfortable state, improve comfortable degree; meanwhile, the fabric is particularly suitable for being used as skin-friendly fabric of baby diapers, adult diapers, sanitary napkins for women and various absorption pads. The utility model relates to a rationally, simple structure, be fit for extensive popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic cross-sectional view of a novel liquid-permeable fibrous nonwoven fabric provided in accordance with an embodiment;

FIG. 2 is a schematic structural diagram of a printing unit provided in the embodiment;

FIG. 3 is a schematic structural view of a novel liquid-permeable fibrous nonwoven fabric according to an embodiment;

in each of the above figures, 1, the upper fiber layer; 2. a non-woven fabric layer; 21. printing structure; 211. a printing unit; 2111. a fish-shaped pressure groove; 2111a, a header; 2111b, abdomen; 2111c, skeg; 2112. a sector area; 22. water permeable holes; 23. non-woven fabrics; 3. and a lower fiber layer.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "up" and "down" will be used hereinafter to designate corresponding directions, but not to limit the structure of the drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

In the embodiment, as shown in fig. 1, fig. 2 and fig. 3, the present invention provides a novel liquid-permeable fiber nonwoven fabric, which comprises an upper fiber layer 1, a nonwoven fabric layer 2 and a lower fiber layer 3 stacked up and down, wherein the upper fiber layer 1 comprises hydrophobic fibers, the lower fiber layer 3 comprises hydrophilic fibers, and both the upper and lower surfaces of the nonwoven fabric layer 2 are provided with printed structures 21. The hydrophilic fiber and the hydrophobic fiber are single-layer fiber nets, the two fiber nets are overlapped with the non-woven fabric layer of the non-woven fabric layer, and the two fiber nets and the non-woven fabric layer are conveyed to a thermal bonding device through a conveying belt after being compressed properly and are thermally bonded through a thermal bonding process. The thermal bonding process may be hot air bonding, hot rolling, or ultrasonic pressing. The water holes 22 of the non-woven fabric layer are punched by a punching machine, and the printing structure 21 is formed by punching by a corresponding die and an embossing machine or rolling by a knurling machine.

Further, the utility model provides a stamp structure 21 on non-woven fabrics layer 2 includes the square stamp unit 211 of a plurality of equipartition, be provided with the hole 22 of permeating water corresponding to the center of stamp unit on the non-woven fabrics layer 2, the circumference of the hole 22 of permeating water is provided with four fish shape indent 2111 that are circular array and distribute, fish shape indent 2111 includes head 2111a, belly 2111b and tail fin portion 2111c, head 2111a is connected with the hole 22 of permeating water, tail fin portion 2111c towards the corner of stamp unit and form 90 degrees sectorial region 2112 with the corner of stamp unit, tail fin portion 2111 c's initiating terminal is less than the sectorial region, fish shape indent 2111 from tail fin portion to head's degree of depth grow gradually to be smooth transition with the hole of permeating water. The fish-shaped press grooves 2111 of the non-woven fabric layer have a certain depth, and the thickness of the upper fiber layer and the lower fiber layer is between 0 mm and 3mm and is smaller than that of the non-woven fabric layer, so that a printing structure similar to that of the non-woven fabric layer can be obtained after the upper fiber layer and the lower fiber layer are subjected to hot press forming with the non-woven fabric layer; because the hydrophobic fibers of the upper fiber layer 1 have the hydrophobic effect, the liquid falling on the upper fiber layer can penetrate through the upper fiber layer 1 under the self weight of the liquid, and the fish-shaped pressing groove of the non-woven fabric layer 2 is taken as the main flow track until the liquid moves to the water permeable holes and then enters the lower fiber layer 3 through the water permeable holes 22 for diffusion; the sectors 2112 of adjacent printing units form a circular platform with higher potential energy, which not only can form the trend of liquid flow, but also plays a role in distributing liquid to a certain extent; because the depth of the fish-shaped pressure groove 2111 becomes deeper gradually and has a smooth track curve, the liquid seeps into the permeable holes quickly and can be diffused into the lower fiber layer with the hydrophilic effect quickly, the diffusion efficiency is higher, the skin-friendly surface of the device, namely the upper fiber layer, is kept in a dry and comfortable state, and the comfort degree of the product as the skin-friendly fabric is improved.

In order to reduce the production degree of difficulty, the utility model provides a non-woven fabrics layer 2 includes the non-woven fabrics 23 of two-layer range upon range of setting, and one side of non-woven fabrics is provided with stamp structure and opposite side and is planar structure, and the planar structure of two-layer non-woven fabrics is as an organic whole after the butt joint, has saved the quantity of production mould, can guarantee the production quality on non-woven fabrics layer moreover.

In order to improve the dry and comfortable effect of the surface of the upper fiber layer, the utility model provides a pore diameter of the permeable hole 22 accounts for 1/8 ~ 1/4 of the length of side of the stamp unit 211. On the one hand, water can be guided out through the water permeable holes, on the other hand, because the cross-sectional area of the water permeable holes is far smaller than the area of the printing unit, liquid in the fish-shaped pressing groove on the lower surface of the non-woven fabric layer is difficult to form the tendency of backflow, and a large part of the non-woven fabric in the prior art is hydrophilic non-woven fabric, so that the liquid can permeate downwards.

In order to improve the liquid permeation effect, the utility model provides a fish shape indent 2111 accounts for 1/3 ~ 1/2 of stamp unit 211 area. By limiting the area of the fish-shaped pressure groove 2111 and limiting the area of the water permeable holes connected with the head 2111a, the fish-shaped pressure groove with a thin body can be obtained, the passing rate of liquid in the fish-shaped pressure groove 2111 is improved, and a smooth flow trajectory curve is provided, so that the liquid permeation effect is improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. A novel liquid-permeable fiber non-woven fabric comprises an upper fiber layer, a non-woven fabric layer and a lower fiber layer which are stacked up and down, characterized in that the upper fibrous layer comprises hydrophobic fibers, the lower fibrous layer comprises hydrophilic fibers, the upper surface and the lower surface of the non-woven fabric layer are respectively provided with a printing structure, the printing structure comprises a plurality of evenly distributed square printing units, the non-woven fabric layer is provided with a water permeable hole at the center of the printing unit, the circumference of the water permeable hole is provided with four fish-shaped press grooves distributed in a circular array, the fish-shaped pressure tank comprises a head part, an abdomen part and a tail fin part, the head part is connected with the water permeable hole, the tail fin part faces to the corner of the printing unit and forms a sector area of 90 degrees with the corner of the printing unit, the starting end of the tail fin part is lower than the sector area, and the depth of the fish-shaped pressure groove from the tail fin part to the head part is gradually increased to form smooth transition with the water permeable hole.

2. A novel liquid-permeable fibrous nonwoven fabric as claimed in claim 1, wherein said nonwoven fabric layer comprises two layers of nonwoven fabric arranged one on top of the other, said nonwoven fabric layer having a printed structure on one side and a planar structure on the other side, the planar structures of the two layers of nonwoven fabric being joined to each other to form a unitary structure.

3. A novel liquid-permeable fibrous nonwoven fabric as claimed in claim 2, wherein the water-permeable holes have a diameter of 1/8 to 1/4 times the length of the side of the printing unit.

4. A novel liquid-permeable fibrous nonwoven fabric as claimed in claim 3, wherein said fish-shaped depressions occupy 1/3-1/2 of the area of the printing unit.