CN219256679U

CN219256679U - Polylactic acid surgical gown fabric with self-cleaning function

Info

Publication number: CN219256679U
Application number: CN202221346928.1U
Authority: CN
Inventors: 樊海彬; 蒋兵
Original assignee: Suzhou Guyuan Biotechnology Co ltd
Current assignee: Suzhou Guyuan Biotechnology Co ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2023-06-27
Anticipated expiration: 2032-05-31

Abstract

The utility model discloses a polylactic acid surgical gown fabric with a self-cleaning function, which comprises an inner layer, an intermediate layer, an electrostatic spinning nano-structure layer and an outer layer; the inner layer is degradable polylactic acid spunlaced non-woven fabric or degradable polylactic acid mixed fiber spunlaced non-woven fabric; the outer layer is polylactic acid spunlaced non-woven fabric; the middle layer is a PLA/PBAT film; the electrostatic spinning nano-structure layer comprises an electrostatic spinning nano-fiber film close to one side of the middle layer, and nanoscale protrusions are distributed on the surface of one side of the electrostatic spinning nano-fiber film close to the outer layer. The inner layer and the outer layer are both spun-laced non-woven fabrics, so that the soft touch feeling of the operating coat fabric can be improved, the wearing comfort is improved, and the operating coat fabric has good fit. And the outer side of the middle layer is compounded with an electrostatic spinning nano-structure layer, so that microparticles cannot permeate and adsorb on the electrostatic spinning nano-structure layer, and the whole polylactic acid surgical gown fabric has a good self-cleaning function and keeps air permeability.

Description

Polylactic acid surgical gown fabric with self-cleaning function

Technical Field

The utility model relates to the technical field of surgical gown fabrics, in particular to a polylactic acid surgical gown fabric with a self-cleaning function.

Background

The medical protective material belongs to a disposable material product in order to avoid the occurrence of cross infection. The medical operating gown can effectively prevent blocking effects of liquid, microorganisms and particulate matters, and is an important guarantee for guarding medical staff. How to effectively shield the infection of bacterial virus and simultaneously make the surgical clothing fabric have self-cleaning function. The melt-blown spun-bonded non-woven fabric is adopted, so that the prepared surgical gown fabric is poor in air permeability, uncomfortable for medical staff when being worn, and poor in barrier property to bacterial and virus if being used for drawing. The existing surgical gown is generally prepared by adopting a material of non-degradable non-woven fabrics and a film, and meanwhile, the film is an outer layer of the surgical gown. In order to prevent the outer layer of the film from being damaged during use, the film is usually required to be made thicker, which results in higher production cost. And the existing surgical gown fabric has the defect of self-cleaning.

Disclosure of Invention

The utility model aims to provide a polylactic acid surgical gown fabric with a self-cleaning function, which has a good self-cleaning function, so that microparticles cannot permeate and adsorb on an electrostatic spinning nano-structure layer, and has a good self-cleaning function.

In order to solve the technical problems, the aim of the utility model is realized as follows:

the utility model relates to a polylactic acid surgical gown fabric with a self-cleaning function, which sequentially comprises an inner layer, an intermediate layer, an electrostatic spinning nano-structure layer and an outer layer;

the inner layer is degradable polylactic acid spunlaced non-woven fabric or degradable polylactic acid mixed fiber spunlaced non-woven fabric; the outer layer is polylactic acid spunlaced non-woven fabric; the intermediate layer is a PLA/PBAT film;

the electrostatic spinning nano-structure layer comprises an electrostatic spinning nano-fiber film close to one side of the middle layer, and nanoscale protrusions are distributed on the surface of one side of the electrostatic spinning nano-fiber film close to the outer layer;

the inner layer, the middle layer, the electrostatic spinning nano-structure layer and the outer layer are all compounded through a bonding layer with air permeability.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the bonding layer is a hot melt adhesive net film.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the bonding layer is a hot melt adhesive in a dot shape, a strip shape or a net shape, or a hot melt adhesive sprayed in a spiral shape.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: a layer of gramineous fiber spunlaced non-woven fabric is arranged between the inner layer and the middle layer; the said gramineous fiber water thorn non-woven fabrics are all compounded with the inner layer and the middle layer through the bonding layer.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the degradable polylactic acid mixed fiber spun-laced non-woven fabric is prepared from polylactic acid fibers and viscose fibers.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the electrostatic spinning nano-structure layer is prepared from polylactic acid through an electrostatic spinning process; the size of the protrusions is 6-8 mu m, the height is 11-13 mu m, and the interval between two adjacent protrusions is 19-28 mu m.

The beneficial effects of the utility model are as follows: according to the polylactic acid surgical gown fabric with the self-cleaning function, the inner layer and the outer layer are both made of the spun-laced non-woven fabrics, so that the soft touch feeling of the surgical gown fabric can be improved, the wearing comfort is improved, and the surgical gown fabric has good fit. And the outer side of the middle layer is compounded with an electrostatic spinning nano-structure layer, so that microparticles cannot permeate and adsorb on the electrostatic spinning nano-structure layer, and the whole polylactic acid surgical gown fabric has a good self-cleaning function and keeps air permeability.

Drawings

Fig. 1 is a schematic structural view of a polylactic acid surgical gown fabric according to an embodiment one;

FIG. 2 is a schematic structural view of an electrospun nanostructure layer according to one embodiment;

fig. 3 is a schematic structural diagram of an antistatic nanostructure layer according to a second embodiment.

The labels in the figures are illustrated below: 1-an inner layer; 2-an intermediate layer; 3-electrospinning the nanostructure layer; 4-an outer layer; 5-gramineralogical fiber spunlaced nonwoven fabric; 31-electrospinning a nanofiber membrane; 32-protrusions.

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 polylactic acid surgical gown fabric with the self-cleaning function comprises an inner layer 1, an intermediate layer 2, an electrostatic spinning nano-structure layer 3 and an outer layer 4 in sequence.

The inner layer 1 is a degradable polylactic acid spunlaced non-woven fabric or a degradable polylactic acid mixed fiber spunlaced non-woven fabric; the outer layer 4 is polylactic acid spunlaced non-woven fabric; the inner layer 1 and the outer layer 4 are both made of spun-laced non-woven fabrics, the spun-laced non-woven fabrics have the characteristic of soft touch, the surgical gown made of the surgical gown fabric is comfortable to wear, the fit is good, and the wearing experience of medical staff can be achieved.

The middle layer 2 is a PLA/PBAT film; the PLA/PBAT film is a composite film material prepared by taking PBAT and PLA as raw materials and adding a dispersing agent, an initiator, an opening agent, a compatilizer, a chain extender, a plasticizing compatibilizer, a nano material and an inorganic filler. The PLA/PBAT film has the oxygen transmittance and the water vapor transmittance both conforming to the national standard and good barrier property.

The electrospun nano-structure layer 3 comprises an electrospun nano-fiber film 31 close to one side of the middle layer 2, and nano-scale protrusions 32 are distributed on the surface of one side of the electrospun nano-fiber film 31 close to the outer layer 4. The lotus leaf in the nature has self-cleaning and dustproof functions, researches show that the nano micro-convex structure on the surface of the lotus leaf is the main reason for causing the functions, no nano functional particles exist, the corresponding functions are realized by the nano microstructure, the electrostatic spinning nano structure layer 3 of the fabric takes the lotus leaf as a template for electrostatic spinning, the surface of the lotus leaf is sprayed with gold during preparation, then the lotus leaf is taken as a receiving plate for electrostatic spinning, PLA is taken as a spinning solution material, the gold is sprayed onto the surface of the gold-plated lotus leaf, and the electrostatic spinning film 31 with the nano structure on the surface of the lotus leaf is obtained through mould pressing, and nanoscale protrusions 32 are distributed on the outer surface of the electrostatic spinning film 31. The projections 32 are 6 to 8 μm in size and 11 to 13 μm in height, and the interval between two adjacent projections 32 is 19 to 28 μm. The tips of the protrusions 32 are flat and centrally concave. The nano-thickness air layer formed between the spacing of the layer protrusions 32 prevents dust impurities and the like larger than the structure from penetrating and adsorbing the layer structure, so that the layer structure has good dustproof and self-cleaning functions.

The inner layer 1, the middle layer 2, the electrostatic spinning nano-structure layer 3 and the outer layer 4 are all compounded by a bonding layer with air permeability. The adhesive layer is required to have air permeability, so that the air permeability of the whole surgical gown fabric is not affected. In particular, in this embodiment, the adhesive layer 4 may be a hot melt adhesive web. The hot melt adhesive net film has larger void ratio and air permeability on the premise of having bonding effect. The hot melt adhesive used is a degradable hot melt adhesive.

Further, the adhesive layer 4 may be a hot melt adhesive in a dot shape, a strip shape or a net shape, or a hot melt adhesive sprayed in a spiral shape. The hot melt adhesive sprayed in the above form can also provide the adhesive layer 4 with good air permeability.

In this embodiment, the inner layer 1 is selected from a degradable polylactic acid mixed fiber spun-laced nonwoven fabric, and the degradable polylactic acid mixed fiber spun-laced nonwoven fabric is specifically a polylactic acid fiber and viscose fiber mixed spun-laced nonwoven fabric. The non-woven fabric with the polylactic acid fiber and the viscose fiber mixed has certain moisture absorption capacity and can absorb sweat secreted by medical staff when the operating gown is worn. The weight of the degradable polylactic acid mixed fiber spunlaced nonwoven used in the inner layer 1 ranges from 35 to 45 grams per square meter, and 35 grams per square meter is selected in the embodiment.

In this embodiment, the outer layer 4 is a polylactic acid spun-laced nonwoven fabric, and the polylactic acid spun-laced nonwoven fabric may be subjected to water-repellent treatment, so that a layer of water-repellent coating is attached to the surface of the polylactic acid spun-laced nonwoven fabric, and when the surgical gown fabric is made into a surgical gown, the outer layer 3 has a certain waterproof function, and can achieve a certain waterproof effect in rainwater, so that the effect of protecting medical staff is achieved. The polylactic acid spunlaced nonwoven used for the outer layer 4 has a grammage of 25-32 grams per square meter, in this example chosen to be 25 grams per square meter.

In this embodiment, the thickness of the intermediate layer 2 is 0.008cm to 0.01cm, specifically 0.008cm.

The fabric for surgical gown prepared in this example was tested to have a moisture permeability of 820g/m ² D, 6 grade penetration resistance to synthetic blood, 13.5kPa permeation resistance to water, and 4 grade surface moisture resistance.

Example two

Referring to fig. 3, the polylactic acid surgical gown fabric with self-cleaning function according to the present utility model is different from the first embodiment in that: a layer of gramineous fiber spunlaced non-woven fabric 5 is arranged between the inner layer 1 and the middle layer 2; the gramineous fiber spunlaced non-woven fabric 5 is compounded with the inner layer 1 and the middle layer 2 through bonding layers. The grammage of the inner layer 1 is 30 grams per square meter, and the grammage of the gramineous fiber spunlaced nonwoven fabric 4 is 25 grams per square meter. The inner layer 1 is cross-laid, and the gramineous fiber spunlaced non-woven fabric 4 is parallel-laid.

The said fiber is a biological base fiber, and is produced by using glucose produced by corn starch as main material to culture a great amount of selected microbe, extracting one kind of polyester PHBV from the microbe, spinning to produce new fiber, contacting with bacteria to destroy the cell wall of harmful bacteria and inhibit bacteria growth.

Another difference is that the polylactic acid spunlaced nonwoven fabric used for the outer layer 3 is 100% polylactic acid fiber; one side of the polylactic acid non-woven fabric is coated with a water repellent coating, and the other side is coated with an antistatic coating; the thickness of the outer layer 3 is 0.01-0.018cm. The protective clothing fabric has waterproof and antistatic functions, and the water-repellent coating is positioned at the outermost side when the protective clothing fabric is used.

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

1. The polylactic acid surgical gown fabric with the self-cleaning function is characterized by sequentially comprising an inner layer (1), an intermediate layer (2), an electrostatic spinning nano-structure layer (3) and an outer layer (4);

the inner layer (1) is a degradable polylactic acid water-jet non-woven fabric or a degradable polylactic acid mixed fiber water-jet non-woven fabric; the outer layer (4) is polylactic acid spunlaced non-woven fabric; the middle layer (2) is a PLA/PBAT film;

the electrostatic spinning nano-structure layer (3) comprises an electrostatic spinning nano-fiber film (31) close to one side of the middle layer (2), and nanoscale protrusions (32) are distributed on the surface of one side, close to the outer layer (4), of the electrostatic spinning nano-fiber film (31);

the inner layer (1), the middle layer (2), the electrostatic spinning nano-structure layer (3) and the outer layer (4) are all compounded through a bonding layer with air permeability.

2. The polylactic acid surgical gown fabric with a self-cleaning function according to claim 1, wherein the adhesive layer is a hot melt adhesive omentum.

3. The polylactic acid surgical gown fabric with a self-cleaning function according to claim 1, wherein the adhesive layer is a hot melt adhesive in a dot shape, a strip shape or a net shape or a hot melt adhesive sprayed in a spiral shape.

4. The polylactic acid surgical gown fabric with the self-cleaning function according to claim 1, characterized in that a layer of gramineous fiber spunlaced non-woven fabric (5) is arranged between the inner layer (1) and the middle layer (2); the gramineous fiber spunlaced non-woven fabric (5), the inner layer (1) and the middle layer (2) are all compounded through a bonding layer.

5. The polylactic acid surgical gown fabric with self-cleaning function according to any one of claims 1 to 4, characterized in that the electrospun nanostructure layer (3) is prepared from polylactic acid through an electrospinning process; the size of the protrusions (32) is 6-8 mu m, the height is 11-13 mu m, and the interval between two adjacent protrusions (32) is 19-28 mu m.