阅读说明：本技术 一种半开孔水刺无纺布及其制备方法 (Semi-open-hole spunlace non-woven fabric and preparation method thereof ) 是由 杨晓伟 贾耀芳 蒙国慧 赵祥 王中荣 吴育师 马莹莹 于 2019-04-29 设计创作，主要内容包括：本发明是关于一种半开孔水刺无纺布,包括水刺布区(1),所述水刺布区(1)上开设有多个半开孔(2),所述半开孔(2)在水刺布区(1)上呈行排列且任意相邻两行之间的距离相同；且同一行任意相邻的两个所述半开孔(2)之间的距离相同；同一列任意相邻的两个所述半开孔(2)之间的距离相同。本发明还提供了上述半开孔水刺无纺布的制备方法。本发明所制备的半开孔水刺无纺布,一面为连续的平整平纹状,一面为带凹孔的平面状态,平纹面可提供平整舒适的使用面,凹孔面可提供产品较好的吸液性和较好的复合性。(The invention relates to a half-open-hole spunlace non-woven fabric which comprises a spunlace fabric area (1), wherein a plurality of half-open holes (2) are formed in the spunlace fabric area (1), the half-open holes (2) are arranged in rows on the spunlace fabric area (1), and the distance between any two adjacent rows is the same; and the distance between any two adjacent half open pores (2) in the same row is the same; the distance between any two adjacent half open pores (2) in the same column is the same. The invention also provides a preparation method of the semi-open spunlace nonwoven fabric. The semi-open spunlace non-woven fabric prepared by the invention has one continuous flat plain weave shape and one plane state with concave holes, the plain weave shape can provide a flat and comfortable use surface, and the concave hole surface can provide good liquid absorption and good compound property for the product.)

1. The semi-open spunlace non-woven fabric is characterized by comprising a spunlace fabric area (1), wherein a plurality of semi-open holes (2) are formed in the spunlace fabric area (1), the semi-open holes (2) are arranged in a row on the spunlace fabric area (1), and the distance between any two adjacent rows is the same; and the distance between any two adjacent half open pores (2) in the same row is the same; the distance between any two adjacent half open pores (2) in the same column is the same.

2. Semi-open spunlace nonwoven according to claim 1, wherein the semi-openings (2) are blind holes of oval, prismatic, rectangular or circular shape.

3. A semi-apertured spunlace as defined in claim 2 wherein the distance between any two adjacent semi-apertures (2) in the same row is between 0.3 and 2.0 mm.

4. A semi-apertured spunlace as defined in claim 3 wherein the distance between any two adjacent semi-apertures (2) in the same row is between 0.3 and 2.0 mm.

5. A semi-apertured spunlace according to claim 4 wherein the length of the semi-apertures (2) in the longitudinal direction is between 0.5 and 2.0mm and the length in the transverse direction is between 0.2 and 1.5 mm.

6. A semi-apertured spunlace nonwoven according to claim 5, wherein the distance between the center points of any two adjacent semi-apertures (2) in the same row is 0.5-3.0 mm; the distance between the central points of any two adjacent half open pores (2) in the same column is 0.5-3.0 mm.

7. A semi-apertured spunlace nonwoven according to claim 1 wherein the semi-apertures (2) have a perforation rate of 24 to 40 mesh; the spunlace cloth area (1) is formed by one or the combination of polyester fibers, viscose fibers, tencel fibers, lyocell fibers, cotton fibers and ES fibers through entanglement.

8. The semi-apertured hydroentangled nonwoven fabric according to any one of claims 1 to 7, wherein the semi-apertured hydroentangled nonwoven fabric has a grammage of from 30 to 80 grams per square meter, a tenacity at break in the machine direction of greater than 30N/(5cm x 10cm), a tenacity at break in the cross-machine direction of greater than 10N/(5cm x 10cm), an elongation at break in the machine direction of from 25 to 35%, and an elongation at break in the cross-machine direction of from 35 to 150%.

9. A method of making a semi-open spunlace nonwoven fabric according to any of claims 1 to 8, comprising the steps of:

1) feeding, opening and carding the fibers into a net;

2) carrying out spunlace pre-needling, carrying out spunlace in a half-open-hole spunlace first area and carrying out spunlace in a half-open-hole spunlace second area;

3) and finishing, drying, coiling, inspecting, slitting and packaging.

10. The method of claim 9, wherein in step 2), the setting conditions of the semi-open hydroentangling zone are 3-5 hydroentangling heads, and the hydroentangling pressure is 30-120 bar; the setting condition of the semi-open pore area is 1-2 spunlace heads, and the spunlace pressure is 10-20 bar; the forming net of the half-open-hole spunlace first area is a spunlace forming net curtain with more than 60 meshes; the forming net of the semi-open hydroentangling area II is a hydroentangling forming net curtain with 24-40 meshes.

Technical Field

The invention relates to the technical field of non-woven materials, in particular to a semi-open spunlace non-woven fabric and a preparation method thereof.

Background

The product structure of the existing spunlace fabric is mainly plain weave, jacquard weave or open pore structure, the open pore structure is generally 6-22 meshes (generally referring to the number of corresponding holes in each inch of transverse length of the spunlace fabric), and the product is mainly applied to dry wet tissues, wiping cloth, medical dressing, medical protective materials, leather base cloth, wall cloth, lining cloth, health care products and the like.

Most of the existing spunlace fabrics are spunlace non-woven fabrics with two plain surfaces or two open holes, but the two surfaces of the existing spunlace fabrics with two plain surfaces are too smooth, the gripping force is not strong, and the water absorption capacity is low when the spunlace fabrics are used as absorption materials; the spunlace fabric with holes on both sides has the problem of rough surface.

Disclosure of Invention

In view of the above, the main objective of the present invention is to provide a semi-open spunlace nonwoven fabric and a preparation method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

a half-open-hole spunlace non-woven fabric comprises a spunlace fabric area, wherein a plurality of half-open holes are formed in the spunlace fabric area, the half-open holes are arranged in rows on the spunlace fabric area, and the distance between any two adjacent rows is the same; and the distance between any two adjacent half open pores in the same row is the same; the distance between any two adjacent half open pores in the same column is the same.

Further, the semi-open holes are blind holes which are oval, prismatic, rectangular or circular.

Further, the distance between any two adjacent half open pores in the same row is 0.3-2.0 mm.

Further, the distance between any two adjacent half open pores in the same column is 0.3-2.0 mm.

Further wherein the half-open pores have a length in the longitudinal direction of 0.5 to 2.0mm and a length in the transverse direction of 0.2 to 1.5 mm.

Further, the distance between the center points of any two adjacent half open pores in the same row is 0.5-3.0 mm; the distance between the central points of any two adjacent half open pores in the same column is 0.5-3.0 mm.

Further wherein the semi-open pores have a porosity of 24-40 mesh; the spunlace cloth area (1) is formed by one or the combination of polyester fibers, viscose fibers, tencel fibers, lyocell fibers, cotton fibers and ES fibers through entanglement.

Further, the gram weight of the semi-open-pore spunlace nonwoven fabric is 30-80 g/square meter, the longitudinal breaking strength is more than 30N/(5cm multiplied by 10cm), the transverse breaking strength is more than 10N/(5cm multiplied by 10cm), the longitudinal breaking elongation is 25-35%, and the transverse breaking elongation is 35-150%.

A preparation method of the semi-open-pore spunlace non-woven fabric comprises the following steps:

1) feeding, opening and carding the fibers into a net;

2) carrying out spunlace pre-needling, carrying out spunlace in a half-open-hole spunlace first area and carrying out spunlace in a half-open-hole spunlace second area;

pre-needling: pre-needling the fiber web to remove air in the fiber web;

carrying out half-open water-punching in a first area: the pre-needled fiber net is subjected to spunlace reinforcement, so that fibers are entangled and cohered, and the strength is improved;

Carrying out half-open-hole spunlace in a second region: carrying out half-open spunlace on the spunlace cloth which is well entangled and reinforced in the spunlace first area, so that one side of the spunlace cloth is flat and the other side of the spunlace cloth is provided with concave holes;

3) and finishing, drying, coiling, inspecting, slitting and packaging.

Further, in the step 2), the setting condition of the semi-open-pore spunlace zone in the step 2) is 3-5 spunlace heads, and the spunlace pressure is 30-120 bar; the setting condition of the semi-open-pore area is 1-2 spunlace heads, and the spunlace pressure is 10-20 bar.

Further, in the step 2), the forming net of the semi-open hydroentangling zone is a hydroentangling forming net curtain with more than 60 meshes; the forming net of the semi-open hydroentangling area II is a hydroentangling forming net curtain with 24-40 meshes.

By the technical scheme, the invention at least has the following advantages:

one surface of the semi-open spunlace non-woven fabric prepared by the invention is in a continuous flat plain weave shape, and the other surface is in a plane state with concave holes, so that the flat grain surface can provide a flat and comfortable use surface for sanitary care, and the concave hole surface can provide good liquid absorption and good compound performance for products;

the semi-open spunlace non-woven fabric prepared by the invention has a flat surface, and can provide beautiful and comfortable appearance and use surface for application scenes such as bed sheets, cover cloth and the like; the concave hole surface enables the product to have better water conductivity and water storage capacity;

Compared with plain spunlace fabrics, the semi-open spunlace non-woven fabric prepared by the invention has better thickness and hand feeling; compared with jacquard and perforated spunlace fabrics, the invention has more delicate hand feeling.

Drawings

FIG. 1 is a schematic structural view of a semi-open spunlace nonwoven fabric according to an embodiment of the present invention;

FIG. 2 is a second schematic structural view of a semi-open spunlace nonwoven fabric according to an embodiment of the present invention;

fig. 3 is a flow chart of a process for preparing a semi-open spunlace nonwoven fabric according to an embodiment of the invention.

Detailed Description

To further explain the technical means and effects of the present invention adopted to achieve the predetermined objects, the following description is made in conjunction with the accompanying drawings and preferred embodiments.

The following materials and reagents are commercially available unless otherwise specified.

As shown in fig. 1 and 2, the invention provides a semi-open spunlace nonwoven fabric, which comprises a spunlace fabric area 1, wherein a plurality of semi-open pores 2 are arranged on the spunlace fabric area 1, the semi-open pores 2 are arranged in rows on the spunlace fabric area 1, and the distance between any two adjacent rows is the same; and the distance between any two adjacent half open pores 2 in the same row is the same; the distance between any two adjacent half open pores 2 in the same column is the same. The semi-open holes 2 are blind holes in an oval shape, a prismatic shape, a rectangular shape or a circular shape. The distance between any two adjacent half open pores 2 in the same row is 0.3-0.4 mm. The distance between any two adjacent half open pores 2 in the same column is 0.3-0.4 mm. The length of the half open pores 2 in the longitudinal direction is 1.5-2.5mm, and the length thereof in the transverse direction is 0.5-1.0 mm. The distance between the central points of any two adjacent semi-open holes 2 in the same row is 3-4 mm; the distance between the central points of any two adjacent half open pores 2 in the same row is 1.5-2.0 mm. The punching rate of the half-open holes 2 is 24-40 meshes. The semi-open spunlace non-woven fabric provided by the invention has the characteristics of flat one surface and blind holes on the other surface, and the shape, size, arrangement mode and the like of the blind holes, and aims to enable a product to have a unique style, meet different requirements of various customers and improve the performance of the non-woven fabric. For example, when the disposable sanitary towel is used as a sanitary nursing product, the flat surface is a flat and comfortable use surface, and the surface with the blind holes is a shielding surface with good liquid absorption performance and composite performance. Compared with plain weave, the style has better thickness and hand feeling, and compared with jacquard weave and punching type spunlace fabrics, the invention has finer hand feeling. The mesh size is optimized, and the effect of half-open holes can be influenced when the mesh size is smaller than the minimum range or larger than the maximum range, so that the performance, the hand feeling and the appearance of the product are not attractive. The spunlace cloth area 1 is formed by one or the combination of polyester fiber, viscose fiber, tencel fiber, lyocell fiber, cotton fiber and ES fiber through entanglement. The gram weight of the semi-open pore spunlace non-woven fabric is 30-80 g/square meter, the longitudinal breaking strength is more than 30N/(5cm multiplied by 10cm), and the transverse breaking strength is more than 10N/(5cm multiplied by 10 cm); the elongation at break in the longitudinal direction is 25-35%, and the elongation at break in the transverse direction is 35-150%. The gram weight and the tensile property of the product are set according to the requirements of semi-open spunlace, and the requirements of subsequent processing of customers can be met only by the spunlace nonwoven fabric meeting the requirements.

As shown in fig. 3, the present invention further provides a method for preparing the semi-open spunlace nonwoven fabric, comprising the following steps:

1) feeding, opening and carding the fibers into a net;

2) carrying out spunlace pre-needling, carrying out spunlace in a half-open-hole spunlace first area and carrying out spunlace in a half-open-hole spunlace second area;

3) and finishing, drying, coiling, inspecting, slitting and packaging.

In the step 2), the setting condition of the semi-open-hole spunlace first area is 3-5 spunlace heads for spunlace, and the spunlace pressure is 30-120 bar; the setting condition of the semi-open pore area is 1-2 spunlace heads, and the spunlace pressure is 10-20 bar; the forming net of the half-open-hole spunlace first area is a spunlace forming net curtain with more than 60 meshes; the forming net of the semi-open spunlace second area is a spunlace forming net curtain with 24-40 meshes; the half-hole first area is mainly used for reinforcing the fiber web, so that the spunlace fabric has enough strength; and the semi-opening second area is used for semi-opening the reinforced spunlace fabric to enable one side of the spunlace fabric to be flat and the other side of the spunlace fabric to be provided with concave holes.

The following is a further description with reference to specific examples.