CN219256683U - Hot-rolled composite non-woven fabric - Google Patents
Hot-rolled composite non-woven fabric Download PDFInfo
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- CN219256683U CN219256683U CN202223015434.8U CN202223015434U CN219256683U CN 219256683 U CN219256683 U CN 219256683U CN 202223015434 U CN202223015434 U CN 202223015434U CN 219256683 U CN219256683 U CN 219256683U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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Abstract
The utility model discloses a hot-rolled composite non-woven fabric, which comprises a surface layer 1, a middle layer, a high barrier layer and a bottom layer which are compounded by hot rolling; the surface layer is a fiber web formed by bi-component polylactic acid short fibers; the middle layer is antibacterial polypropylene non-woven fabric; the high barrier layer is made of superfine fiber membranous structural material; the bottom layer is a polyester fiber layer; the surface of the bottom layer is provided with rolling points; the area of the rolling point is 1.5-2mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The average pore diameter of the superfine fiber membranous structure material is 0.1-10 microns. The bottom layer close to one side of the user adopts a fiber web formed by the bi-component polylactic acid short fibers, so that the soft hand feeling of the bottom layer can be effectively improved. And the adopted superfine fiber membranous structure material can effectively improve the barrier property of the hot-rolled composite non-woven fabric. And the used antibacterial polypropylene non-woven fabric is named as hot-rolled composite non-woven fabric which has a certain antibacterial capability.
Description
Technical Field
The utility model relates to a hot-rolled non-woven fabric, in particular to a hot-rolled composite non-woven fabric.
Background
The non-woven fabric is also called non-woven fabric and is formed by directional or random fibers, is a new generation environment-friendly material, and has the characteristics of moisture resistance, ventilation, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity or irritation, rich color, low price and the like. The hot rolled non-woven fabric as one of the non-woven fabrics can be suitable for disposable sanitary products, conventional surgical gowns and the like.
However, the barrier properties of conventional hot-rolled nonwoven fabrics are not satisfactory for surgical gowns or protective garments for industrial use, which have high barrier requirements. And because the hot-rolled non-woven fabric is formed into a net by spun-bonding and then hot-rolled, the surface of the hot-rolled non-woven fabric has harder hand feeling, and the hot-rolled non-woven fabric has poor experience when being worn as protective clothing. There is a need for how to make a hot-rolled nonwoven fabric that has a soft hand feel in the inner layer and can have high barrier properties.
Disclosure of Invention
The utility model aims to provide a hot-rolled composite non-woven fabric, wherein a bottom layer close to one side of a user adopts a fiber net formed by bi-component polylactic acid short fibers, so that the soft hand feeling of the bottom layer can be effectively improved. And the adopted superfine fiber membranous structure material can effectively improve the barrier property of the hot-rolled composite non-woven fabric.
In order to solve the technical problems, the aim of the utility model is realized as follows:
the utility model relates to a hot-rolled composite non-woven fabric, which comprises a surface layer 1, a middle layer, a high barrier layer and a bottom layer which are compounded by hot rolling; the surface layer is a fiber web formed by bi-component polylactic acid short fibers; the middle partThe interlayer is antibacterial polypropylene non-woven fabric; the high barrier layer is made of superfine fiber membranous structural material; the bottom layer is a polyester fiber layer; the surface of the bottom layer is provided with rolling points; the area of the rolling point is 1.5-2mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The average pore diameter of the superfine fiber membranous structure material is 0.1-10 microns.
The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: a reinforcing layer is arranged between the high barrier layer and the bottom layer.
The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the reinforcing layer is nylon mesh cloth, and the side length of the mesh is 4-8mm square.
The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the rolling points are positioned in the grids of the nylon grid cloth.
The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the surface density of the superfine fiber film-shaped structural material is 20-25 grams per square meter.
The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the area of the rolling point accounts for 20-25% of the area of the bottom layer.
The beneficial effects of the utility model are as follows: according to the hot-rolled composite non-woven fabric, the bottom layer close to one side of a user adopts the fiber net formed by the bi-component polylactic acid short fibers, so that the soft hand feeling of the bottom layer can be effectively improved. And the adopted superfine fiber membranous structure material can effectively improve the barrier property of the hot-rolled composite non-woven fabric. And the used antibacterial polypropylene non-woven fabric is named as hot-rolled composite non-woven fabric which has a certain antibacterial capability.
Drawings
FIG. 1 is a schematic structural view of a hot-rolled composite nonwoven fabric according to an embodiment;
FIG. 2 is a schematic view of a surface layer side of a hot-rolled composite nonwoven fabric according to an embodiment I;
fig. 3 is a schematic structural view of a hot-rolled composite nonwoven fabric according to a second embodiment.
The labels in the figures are illustrated below: 1-a surface layer; 2-an intermediate layer; 3-a high barrier layer; 4-a bottom layer; 5-a reinforcing layer; 6-rolling point.
Detailed Description
The utility model will be further described with reference to the drawings and specific examples.
Example 1
The present embodiment will be described in detail with reference to fig. 1 and 2. The hot-rolled composite non-woven fabric comprises a surface layer 1, a middle layer 2, a high barrier layer 3 and a bottom layer 4 which are compounded by hot rolling; the surface layer 1 is a fiber web formed by bicomponent polylactic acid short fibers; the middle layer 2 is antibacterial polypropylene non-woven fabric; the high barrier layer 3 is made of superfine fiber membranous structural material; the bottom layer 4 is a polyester fiber layer; the surface of the bottom layer 4 is provided with rolling points; the area of the rolling point is 1.5-2mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The average pore diameter of the superfine fiber membranous structure material is 0.1-10 microns.
In this example, the middle layer 1 is a web of carded bicomponent polylactic acid staple fibers having a grammage of 20-25 grams per square meter. The fineness of the bicomponent polylactic acid staple fiber used was 1 to 1.5D, the length was 38mm, and specifically to the fineness of 1.5D in this example. The section of the specific bi-component polylactic acid short fiber is in a sheath-core structure, the sheath layer is low-melting polylactic acid, the core layer is high-melting polylactic acid, the sheath layer is melted at the rolling point position during hot rolling, the surface layer 1 can be fixedly bonded, and the rolling point position is bonded with an adjacent fiber layer.
In this embodiment, no rolling points are provided on the surface of the skin layer 1. That is, when the entire nonwoven fabric is hot-rolled and compounded, the side contacting the top sheet 1 is smooth.
Further, the superfine film-like structural material has an areal density of 20-25 grams per square meter. In this example 25 grams per square meter.
Further, the area of the rolling points accounts for 20-25% of the area of the bottom layer 4. In this embodiment, the area of the nip is 20% of the area of the bottom layer 4. If the ratio is smaller than this, the bonding strength is insufficient, and the whole hot-rolled composite nonwoven fabric is liable to delaminate. If the occupied area is high, the air permeability thereof becomes poor.
Further, the gram weight of the antibacterial polypropylene nonwoven fabric was 20 grams per square meter.
The preparation process of the hot-rolled composite non-woven fabric in the implementation is as follows: preparing a fiber web from polyester filaments in a spun-bonding mode, wherein the fiber web is a bottom layer 4; and placing the superfine fiber membranous structure material above the bottom layer 4, arranging the antibacterial polypropylene non-woven fabric above the superfine fiber membranous structure material, and paving a fiber web formed by the double-component polylactic acid short fibers above the antibacterial polypropylene non-woven fabric. Forming a four-layer composite fiber net structure, and then carrying out hot rolling to form the hot-rolled composite non-woven fabric.
Example two
This embodiment will be described in detail with reference to fig. 3. The difference between the hot rolled composite nonwoven fabric according to the present embodiment and the first embodiment is that: a reinforcing layer 5 is arranged between the high barrier layer 3 and the bottom layer 4. When the hot-rolled composite non-woven fabric is cut to prepare protection, the reinforcing layer 5 can increase the strength of the whole hot-rolled composite non-woven fabric, and avoid the damage of the whole hot-rolled composite non-woven fabric.
Further, the reinforcing layer 5 is nylon mesh cloth, and the side length of the mesh is square with the length of 4-8 mm. In this embodiment, the side length is 4mm.
Still further, the rolling points 6 are positioned in the grids of the nylon grid cloth. The rolling points are arranged inside the grids, so that nylon filaments on the nylon grid cloth are not damaged during hot rolling, the strength of the nylon grid cloth is reduced, and the strength of the whole hot-rolled non-woven fabric is reduced.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (6)
1. A hot-rolled composite nonwoven fabricCharacterized by comprising a surface layer (1), a middle layer (2), a high barrier layer (3) and a bottom layer (4) which are compounded by hot rolling; the surface layer (1) is a fiber web formed by bicomponent polylactic acid short fibers; the middle layer (2) is antibacterial polypropylene non-woven fabric; the high barrier layer (3) is made of superfine fiber membranous structural material; the bottom layer (4) is a polyester fiber layer; the surface of the bottom layer (4) is provided with rolling points (6); the area of the rolling point (6) is 1.5-2mm 2 The method comprises the steps of carrying out a first treatment on the surface of the The average pore diameter of the superfine fiber membranous structure material is 0.1-10 microns.
2. A hot-rolled composite nonwoven according to claim 1, characterized in that a reinforcing layer (5) is arranged between the high barrier layer (3) and the bottom layer (4).
3. A hot-rolled composite nonwoven fabric according to claim 2, characterized in that the reinforcing layer (5) is a nylon scrim, the sides of the scrim being square with a length of 4-8 mm.
4. A hot rolled composite nonwoven fabric according to claim 3, wherein said rolling points are located within the mesh of a nylon mesh cloth.
5. The hot rolled composite nonwoven fabric according to claim 1, wherein said superfine fiber film-like structural material has an areal density of 20 to 25 grams per square meter.
6. A hot-rolled composite nonwoven according to claim 1, characterized in that the area of the roll nip (6) is 20-25% of the area of the bottom layer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223015434.8U CN219256683U (en) | 2022-11-11 | 2022-11-11 | Hot-rolled composite non-woven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223015434.8U CN219256683U (en) | 2022-11-11 | 2022-11-11 | Hot-rolled composite non-woven fabric |
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| Publication Number | Publication Date |
|---|---|
| CN219256683U true CN219256683U (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223015434.8U Active CN219256683U (en) | 2022-11-11 | 2022-11-11 | Hot-rolled composite non-woven fabric |
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| CN (1) | CN219256683U (en) |
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- 2022-11-11 CN CN202223015434.8U patent/CN219256683U/en active Active
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