A new type of partitioned non-woven fabric

Abstract

The present invention provides a novel partitioned non-woven fabric, comprising two areas, dam areas on both sides and a water-absorbing area in the middle. The height of the wavy dams on both sides is 1.5 mm higher than that of the middle part, which can block the diffusion of liquid to the sides. The intervals between the dams play a good buffering role, so that the liquid will not leak sideways after passing through one barrier after another; the perforated design between the dams allows the liquid to quickly penetrate through the holes and be absorbed by the lower layer while buffering, effectively reducing the flow rate to the second and third dams and reducing the side leakage rate; a water-repellent oil agent is roller-coated on the dam area to increase the barrier effect.

Description

Technical Field

[0001] The invention relates to the technical field of nonwoven fabrics, and in particular to a novel partitioned nonwoven fabric. Background Art

[0002] Nonwoven fabrics, also known as nonwoven fabrics, are sheets, webs or pads made of directional or randomly arranged fibers that are combined with each other by friction, cohesion or bonding, or a combination of these methods.

[0003] Non-woven fabrics are moisture-proof, breathable, flexible, lightweight, non-flammable, easily decomposable, non-toxic and non-irritating, colorful, low-priced, and recyclable. They are widely used in the surface structure of sanitary napkins and diapers.

[0004] The existing patent application (CN219650714U) discloses a water-absorbent non-woven fabric, including a non-woven fabric layer, which is a viscose fiber fabric layer. A breathable layer and a wear-resistant layer are respectively arranged on both sides of the non-woven fabric layer. The wear-resistant layer is woven by warp and weft of wear-resistant yarn and elastic yarn. A plurality of breathable holes are opened on the wear-resistant layer. A plurality of antibacterial threads are spirally wrapped around the outer side of the yarn core. The antibacterial threads are bamboo fiber threads. A plurality of antistatic threads are distributed in a circular array along the circumferential direction between the antibacterial threads and the yarn core, and a breathable cavity is formed between adjacent antistatic threads.

[0005] Non-woven fabrics with a planar structure are prone to side leakage after absorbing water, so a new type of non-woven fabric that prevents side leakage is needed. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a new type of partitioned non-woven fabric, which can effectively prevent side leakage, has a short penetration time, is conducive to rapid liquid infiltration, has a small amount of rewetting, has good reverse osmosis performance, and has a drier surface layer.

[0007] The present invention provides a novel partitioned nonwoven fabric, comprising a water absorption area and two dam areas connected to both sides of the water absorption area and having a higher level than the water absorption area; the water absorption area comprises a plurality of water absorption points arranged in a dot matrix for rapid absorption of liquid, a liquid infiltration area arranged around the water absorption points, and a permeation channel arranged on the liquid infiltration area;

[0008] The dam area includes a dam base connected to the water absorption area, a plurality of dams vertically arranged on the dam base and drainage holes arranged on the dam base between adjacent dams for guiding liquid infiltration, and a water-repellent oil agent is coated on the dam.

[0009] The novel partitioned nonwoven fabric described in the present invention is preferably provided with four to eight dams arranged in parallel on the dam base.

[0010] The novel partitioned nonwoven fabric described in the present invention is preferably configured such that the horizontal height of the dam area is 1.5 mm higher than that of the water absorption area.

[0011] The novel partitioned nonwoven fabric described in the present invention is preferably arranged in an elliptical shape with water absorption points connected end to end in the horizontal and vertical directions and arranged in a copper coin shape.

[0012] The novel partitioned nonwoven fabric described in the present invention is preferably configured such that the permeation channel is located at the center of two vertically intersecting water absorption points.

[0013] The novel zoned nonwoven fabric described in the present invention is preferably such that the area of ​​the infiltration zone accounts for 40-50% of the area of ​​the water absorption zone.

[0014] The novel partitioned nonwoven fabric described in the present invention is preferably composed of hydrophilic oil agent fibers, and the hydrophilic oil agent fibers are a skin-core structure, including a skin layer, a core layer arranged inside the skin layer, and a hydrophilic oil agent coated on the surface of the skin layer.

[0015] The novel partitioned nonwoven fabric described in the present invention is preferably configured such that the fineness of the hydrophilic oil agent fiber is 1 to 3D.

[0016] The novel partitioned nonwoven fabric described in the present invention is preferably configured such that the water-repellent oil agent is evenly coated on the dam by a liquid-carrying roller.

[0017] The novel partitioned nonwoven fabric described in the present invention is preferably prepared by hot air combing to form a base fabric, which is then punched with a punching roller, embossed with an embossing roller, and coated with a water-repellent oil agent.

[0018] Compared with the existing water-absorbent non-woven fabrics, the present invention has a small amount of slippage, and the dam serves to intercept liquid and prevent side leakage. At the same time, the middle part can seep down quickly, with a short penetration time and a small amount of dewetting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a physical picture of a new type of partitioned non-woven fabric of the present invention;

[0020] Figure 2 This is a fiber schematic diagram of a novel partitioned nonwoven fabric of the present invention.

[0021] Reference numerals

[0022] 1. Water absorption area; 11. Water absorption point; 12. Liquid infiltration area; 13. Infiltration channel; 2. Dam area; 21. Dam base; 22. Dam; 23. Drain hole; 3. Cortex; 4. Core layer. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Example 1

[0025] like Figures 1-2 As shown, a novel partitioned nonwoven fabric comprises a water absorption area 1 and two dam areas 2 connected to both sides of the water absorption area 1 and having a higher level than the water absorption area; the water absorption area 1 comprises a plurality of water absorption points 11 arranged in a dot matrix for rapid absorption of liquid, a liquid infiltration area 12 arranged around the water absorption point 11 and a permeation channel 13 arranged on the liquid infiltration area 12;

[0026] The dam area 2 includes a dam base 21 connected to the water absorption area 1, a plurality of dams 22 vertically arranged on the dam base 21, and drainage holes 23 arranged on the dam base 21 between adjacent dams 22 for guiding liquid infiltration, and a water-repellent oil agent is coated on the dam 22.

[0027] Four dams 22 arranged in parallel are provided on the dam base 21 .

[0028] The level of dam area 2 is 1.5 mm higher than that of water absorption area 1.

[0029] The water absorption points 11 are elliptical in shape, and are connected end to end in the horizontal and vertical directions, and are arranged in a copper coin shape.

[0030] The permeation channel 13 is arranged at the center of two vertically intersecting water absorption points 11 .

[0031] The area of ​​the infiltration zone 12 accounts for 40% of the area of ​​the water absorption zone 1.

[0032] The novel partitioned nonwoven fabric is composed of hydrophilic oil agent fibers, and the hydrophilic oil agent fibers are a skin-core structure, including a skin layer 3, a core layer 4 arranged inside the skin layer 3, and a hydrophilic oil agent coated on the surface of the skin layer 3.

[0033] The fineness of the hydrophilic oil agent fiber is 1D.

[0034] The water-repellent oil is evenly coated on the dam by a liquid roller.

[0035] The new partitioned non-woven fabric is made of non-woven fabric through a hot air combing process to form a base fabric, which is then punched with a punching roller, embossed with an embossing roller, and coated with a water-repellent oil agent.

[0036] This product was tested with other products. The average penetration time of the new partitioned non-woven fabric was 1.22s, and the average penetration time of the comparison sample was 1.39s. The average anti-wetting amount of the new partitioned non-woven fabric was 0.067g, and the average anti-wetting amount of other products was 0.076g. The average slippage amount of the new partitioned non-woven fabric in the CD direction was 2.44g, and the average slippage amount of other products in the CD direction was 3.58g.

[0037] Example 2

[0038] like Figures 1-2 As shown, a novel partitioned nonwoven fabric comprises a water absorption area 1 and two dam areas 2 connected to both sides of the water absorption area 1 and having a higher level than the water absorption area; the water absorption area 1 comprises a plurality of water absorption points 11 arranged in a dot matrix for rapid absorption of liquid, a liquid infiltration area 12 arranged around the water absorption point 11 and a permeation channel 13 arranged on the liquid infiltration area 12;

[0039] The dam area 2 includes a dam base 21 connected to the water absorption area 1, a plurality of dams 22 vertically arranged on the dam base 21, and drainage holes 23 arranged on the dam base 21 between adjacent dams 22 for guiding liquid infiltration, and a water-repellent oil agent is coated on the dam 22.

[0040] Four dams 22 arranged in parallel are provided on the dam base 21 .

[0041] The level of dam area 2 is 1.5 mm higher than that of water absorption area 1.

[0042] The water absorption points 11 are elliptical in shape, and are connected end to end in the horizontal and vertical directions, and are arranged in a copper coin shape.

[0043] The permeation channel 13 is arranged at the center of two vertically intersecting water absorption points 11 .

[0044] The area of ​​the infiltration zone 12 accounts for 50% of the area of ​​the water absorption zone 1.

[0045] The novel partitioned nonwoven fabric is composed of hydrophilic oil agent fibers, and the hydrophilic oil agent fibers are a skin-core structure, including a skin layer 3, a core layer 4 arranged inside the skin layer 3, and a hydrophilic oil agent coated on the surface of the skin layer 3.

[0046] The fineness of the hydrophilic oil agent fiber is 3D.

[0047] The water-repellent oil is evenly coated on the dam by an embossing roller.

[0048] The new partitioned non-woven fabric is made into a base fabric through a hot air combing process, and then punched with a punching roller, embossed with an embossing roller, and coated with a water-repellent oil agent.

[0049] This product was tested with other products. The average penetration time of the new partitioned non-woven fabric was 1.25s, and the average penetration time of the comparison sample was 1.49s. The average anti-wetting amount of the new partitioned non-woven fabric was 0.066g, and the average anti-wetting amount of other products was 0.076g. The average slippage amount of the new partitioned non-woven fabric in the CD direction was 2.47g, and the average slippage amount of other products in the CD direction was 3.68g.

[0050] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that any modification, change or equivalent that can be made without departing from the spirit and scope defined by the claims will fall within the protection scope of the present invention.

Claims

1. A new type of partitioned non-woven fabric, characterized by: It comprises a water absorption area (1) and two dam areas (2) connected to both sides of the water absorption area (1) and having a higher level than the water absorption area (1); the water absorption area (1) comprises a plurality of water absorption points (11) arranged in a lattice for rapid absorption of liquid, a liquid infiltration area (12) arranged around the water absorption points (11) and an infiltration channel (13) arranged on the liquid infiltration area (12); The dam area (2) includes a dam base (21) connected to the water absorption area, a plurality of dams (22) vertically arranged on the dam base (21), and drainage holes (23) arranged on the dam base (21) between adjacent dams (22) for guiding liquid to seep downward, and a water-repellent oil agent is coated on the dam (22).

2. The novel partitioned nonwoven fabric according to claim 1 is characterized in that: Four to eight dams (22) are arranged in parallel on the dam base (21).

3. The novel partitioned nonwoven fabric according to claim 1 is characterized in that: The level of the dam area (2) is 1.5 mm higher than that of the water absorption area (1).

4. The novel partitioned nonwoven fabric according to claim 1 is characterized in that: The water absorption points (11) are circular or elliptical, and are connected end to end in the horizontal and vertical directions and arranged in a copper coin shape.

5. The novel partitioned nonwoven fabric according to claim 1 is characterized in that: The permeation channel (13) is arranged at the center of two perpendicularly intersecting water absorption points (11).

6. The novel partitioned nonwoven fabric according to claim 1 is characterized in that: The area of ​​the infiltration zone (12) accounts for 40 to 50% of the area of ​​the water absorption zone (1).

7. The novel partitioned nonwoven fabric according to claim 1 is characterized in that: The novel partitioned non-woven fabric is composed of hydrophilic oil agent fibers, and the hydrophilic oil agent fibers are of a skin-core structure, comprising a skin layer (3), a core layer (4) arranged inside the skin layer (3), and a hydrophilic oil agent coated on the surface of the skin layer (3).

8. The novel partitioned nonwoven fabric according to claim 1 is characterized in that: The fineness of the hydrophilic oil agent fiber is 1-3D.

9. The novel partitioned nonwoven fabric according to claim 1, characterized in that: The water-repellent oil agent is evenly coated on the dam (22) by a liquid roller.

10. A novel partitioned nonwoven fabric according to any one of claims 1 to 9, characterized in that: The novel partitioned non-woven fabric is prepared by a hot air combing process to form a base fabric, and then punched with a punching roller, embossed with an embossing roller, and coated with a water-repellent oil agent.

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