CN110916902A - Disposable absorbent article and apparatus and method for making same - Google Patents
Disposable absorbent article and apparatus and method for making same Download PDFInfo
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- CN110916902A CN110916902A CN201911340872.1A CN201911340872A CN110916902A CN 110916902 A CN110916902 A CN 110916902A CN 201911340872 A CN201911340872 A CN 201911340872A CN 110916902 A CN110916902 A CN 110916902A
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Manufacturing & Machinery (AREA)
- Epidemiology (AREA)
- Biomedical Technology (AREA)
- Textile Engineering (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The present application provides a disposable absorbent article and apparatus and method for making the same. Wherein, the device includes: consecutive be used for preparing including the surface course processing apparatus of at least one water repellent zone's surface course, be used for preparing the absorbed layer processing apparatus of absorbed layer, be used for preparing the bottom processing apparatus of bottom and be used for compound the surface course the absorbed layer with the set composite of bottom, wherein, surface course processing apparatus includes coating roll and non-woven fabrics roller, the coating roll with non-woven fabrics roller axial direction parallel and relative rotation, the surface covering of non-woven fabrics roller has original non-woven fabrics. The application provides a disposable absorption product and a preparation device and method thereof, can make the surface course possess stable local water repellent effect, effectively improve disposable absorption product's surface course dry and comfortable nature and use cleanliness factor, improve and use the body and feel.
Description
Technical Field
The present application relates to the field of hygiene products, and more particularly, to a disposable absorbent product, and apparatus and method for making the same.
Background
Disposable absorbent articles are articles used to absorb and contain bodily waste in order to prevent it from soiling the body, clothing, or other objects with which the wearer comes into contact, including sanitary napkins, diapers, pantiliners, and the like, which are common in everyday life.
Current disposable absorbent articles typically include dry mesh, soft cover, and cotton cover types. Wherein, the dry and comfortable net surface layer material is mainly a Polyethylene (PE) perforated film, but the PE film is not breathable, is easy to cause allergy, has strong damp and stuffy feeling when being used and is gradually eliminated; the surface layer material of the soft surface layer is mainly made of artificial synthetic fibers subjected to hydrophilic treatment, but the artificial synthetic fibers subjected to hydrophilic treatment have the problems of serious liquid residue and poor dryness in the using process; the surface layer material of the pure cotton surface layer is generally made of natural fibers, has hydrophilicity and water retention, but still has the problems of heavy moist feeling and poor dryness in the using process.
Therefore, the problems that the liquid is easy to remain, the moist feeling is strong, and the dryness and the smoothness are poor are urgently needed to be solved no matter the surface layer of the current disposable absorbent product is made of natural fibers or artificially synthesized fibers subjected to hydrophilic treatment.
Disclosure of Invention
In view of the above, embodiments of the present application provide a disposable absorbent article, and a manufacturing apparatus and method thereof, to solve the technical defects in the prior art.
The application discloses disposable absorbent article's preparation facilities includes: consecutive be used for preparing including the surface course processing apparatus of at least one water repellent zone's surface course, be used for preparing the absorbed layer processing apparatus of absorbed layer, be used for preparing the bottom processing apparatus of bottom and be used for compound the surface course the absorbed layer with the set composite of bottom, wherein, surface course processing apparatus includes coating roll and non-woven fabrics roller, the coating roll with non-woven fabrics roller axial direction parallel and relative rotation, the surface covering of non-woven fabrics roller has original non-woven fabrics.
Further, the surface layer processing device further comprises a liquid feeding roller and a sponge roller, wherein the liquid feeding roller, the sponge roller and the coating roller are axially parallel, the liquid feeding roller and the sponge roller rotate relatively, and the sponge roller and the coating roller rotate relatively.
Furthermore, a plurality of bulges are arranged on the coating roller and are arranged at intervals along the outer surface of the coating roller.
Further, the surface layer processing device also comprises a drying device, and the drying device is connected with the non-woven fabric roller through a conveying device.
The present application also discloses a method of making a disposable absorbent article for use in a device for making the disposable absorbent article, the method comprising:
loop through surface course processing apparatus, absorbed layer processing apparatus, bottom processing apparatus preparation and obtain surface course, absorbed layer and bottom, wherein, obtain the surface course through surface course processing apparatus preparation, include: the coating roller which is pre-stained with a water repellent agent prints the water repellent agent on the original non-woven fabric covered on the outer surface of the non-woven fabric roller which rotates relative to the coating roller through axial rotation to obtain a surface layer comprising at least one water repellent area;
and compounding the surface layer, the absorption layer and the bottom layer by a compounding device to obtain the disposable absorption product.
Further, before the coating roller contaminated with the water repellent agent prints the water repellent agent on the original non-woven fabric covered on the outer surface of the non-woven fabric roller rotating opposite to the coating roller through axial rotation, the method further comprises the following steps:
the liquid feeding roller is stained with a water repellent agent through axial rotation, and the water repellent agent is transferred to a sponge roller which rotates relative to the liquid feeding roller;
the sponge roll, which is contaminated with the water repellent, transfers the water repellent to a coating roll rotating relative to the sponge roll by axial rotation.
Further, the method for manufacturing the disposable absorbent article further comprises the following steps:
the non-woven fabric is conveyed to a drying device for drying through a non-woven fabric roller and a conveying device connected with the non-woven fabric roller.
Furthermore, a plurality of bulges are arranged on the coating roller and are arranged at intervals along the outer surface of the coating roller;
the coating roller which is stained with the water repellent agent in advance prints the water repellent agent on the non-woven fabric covered on the outer surface of the non-woven fabric roller which rotates relative to the coating roller through axial rotation, and the method comprises the following steps:
and the bulges which are pre-stained with the water repellent agent print the water repellent agent on the non-woven fabric covered on the outer surface of the non-woven fabric roller which rotates relative to the coating roller along with the rotation of the coating roller, so as to obtain a surface layer comprising at least one water repellent area.
The application also discloses a disposable absorption product which is prepared by the preparation device of the disposable absorption product, and the disposable absorption product sequentially comprises a surface layer, an absorption layer and a bottom layer from top to bottom.
The application provides a disposable absorbent article's preparation facilities and method carries out local water repellent treatment to the surface course through surface course processing apparatus in disposable absorbent article's preparation process for the surface course possesses stable local water repellent effect, on the basis of guaranteeing compliance, close skin nature, the nonirritant of disposable absorbent article, can effectively improve disposable absorbent article's surface course dry and comfortable nature and use cleanliness factor, improves and uses the body to feel.
The application provides a disposable absorbent article, on the basis of guaranteeing compliance, skin affinity, nonirritant, gas permeability, the dry and comfortable nature that contains the regional surface course of refusing water and improve disposable absorbent article greatly through the setting, reduces the sensibility, improves and uses the comfort.
Drawings
Fig. 1 is a schematic structural diagram of a surface layer processing apparatus according to an embodiment of the present application;
FIG. 2 is a schematic flow chart illustrating steps in a method of making a disposable absorbent article according to an embodiment of the present application;
FIG. 3 is a schematic view of a water repellent zone of a nonwoven facing according to an embodiment of the present application;
FIG. 4 is a schematic view of a water repellent zone of a nonwoven facing according to an embodiment of the present application;
FIG. 5 is a schematic view of a water repellent zone of a nonwoven facing according to an embodiment of the present application;
FIG. 6 is a schematic structural view of a disposable absorbent article according to an embodiment of the present application;
FIG. 7 is a schematic structural view of a disposable absorbent article according to an embodiment of the present application;
reference numerals
1-a liquid feeding roller, 2-a sponge roller, 3-a coating roller, 4-a bump, 5-a non-woven fabric roller, 6-a non-woven fabric conveying roller, 7-a drying device, 8-a water repellent agent pool, 9-a surface layer, 10-a flow guide layer, 11-an absorption layer, 12-a bottom layer, 13-a back glue layer and 14-a release paper layer;
a-non-woven fabric which is not subjected to water repellent treatment, and b-non-woven fabric which is subjected to water repellent treatment.
Detailed Description
The following description of specific embodiments of the present application refers to the accompanying drawings.
Example 1
The present embodiment discloses a device for making disposable absorbent articles, comprising: the water repellent layer treatment device comprises a surface layer treatment device for preparing a surface layer 9 comprising at least one water repellent area, an absorption layer treatment device for preparing an absorption layer 11, a bottom layer treatment device for preparing a bottom layer 12 and a compounding device for compounding the surface layer 9, the absorption layer 11 and the bottom layer 12 which are connected in sequence.
As shown in fig. 1, the facing layer processing device comprises an application roller 3 and a non-woven fabric roller 5, wherein the application roller 3 and the non-woven fabric roller 5 are axially parallel and relatively rotate, the outer surface of the non-woven fabric roller 5 is covered with raw non-woven fabric, and the raw non-woven fabric is subjected to water repellent treatment to form at least one water repellent area and then is used for preparing a facing layer 9 of a disposable absorbent article.
The applicator roll 3 is a cylindrical machine member that is used for coating operations and is rotatable on the machine.
Preferably, the coating roll 3 may be provided with at least one protrusion 4, more preferably, the coating roll 3 is provided with a plurality of protrusions 4, the protrusions 4 are arranged along the outer surface of the coating roll 3 at intervals, one protrusion 4 stained with a water repellent agent is printed on the non-woven fabric to form a water repellent area, the shape or size of each protrusion 4 may be the same or different, and the protrusions are located on the side wall of the coating roll 3 and may be arranged at regular intervals or irregular intervals, which is not limited in the present application.
In practical application, the protrusions 4 which are pre-stained with the water repellent agent are printed on the non-woven fabric covered on the outer surface of the non-woven fabric roller 5 which rotates relative to the coating roller 3 along with the rotation of the coating roller 3, so that the non-woven fabric surface layer comprising at least one water repellent area is obtained.
The nonwoven fabric roll 5 is a cylindrical member for water-repellent treatment of nonwoven fabric and rotatable on the machine, and the nonwoven fabric roll 5 can convey the nonwoven fabric by means of rotation of one or more nonwoven fabric conveying rolls 6.
The above-mentioned coating roller 3 and the nonwoven fabric roller 5 are in adjacent position and rotate relatively, for example, in the case that the coating roller 3 rotates counterclockwise, the nonwoven fabric roller 5 rotates clockwise, when the projection 4 on the coating roller 3 rotates to the position contacting with the nonwoven fabric roller 5, the water repellent agent stained on the projection 4 is printed on the nonwoven fabric between the two by the relative force between the coating roller 3 and the nonwoven fabric roller 5, that is, the pressing force, to form the water repellent area.
The surface layer treatment device in the preparation device of the disposable absorbent article according to the embodiment prints the water repellent agent stained on the coating roller 3 onto the nonwoven fabric through the relative rotation of the coating roller 3 and the nonwoven fabric roller 5 which are positioned at adjacent positions to prepare the surface layer 9 comprising at least one water repellent area, and has the advantages of low cost, good economic benefit, simple and convenient operation, stable formation of the water repellent area and good effect.
Further, the surface layer processing device of this embodiment still includes liquid feeding roller 1 and sponge roller 2, liquid feeding roller 1, sponge roller 2 and coating roll 3 are all axially parallel, go up liquid roller 1 with relative rotation between sponge roller 2, relative rotation between sponge roller 2 and coating roll 3.
The liquid feeding roller 1 is stained with a water repellent agent through axial rotation, and the water repellent agent is transferred to a sponge roller 2 which rotates relative to the liquid feeding roller 1; the sponge roll 2, which is contaminated with the water repellent agent, transfers the water repellent agent to the applicator roll 3, which rotates relative to the sponge roll 2, by rotating axially.
The liquid feeding roller 1 is a cylindrical machine member which is used for initially staining a water repellent agent and can rotate on a machine. The side surface of the upper liquid roller 1 can be made of materials with good hydrophilicity and water absorbability, such as velveteen or velveteen, a water repellent agent pool 8 for containing a water repellent agent is arranged below the upper liquid roller 1, and the liquid level of the water repellent agent in the water repellent agent pool 8 is always higher than the lowest point of the upper liquid roller 1, so that the smoothness of the operation of absorbing the water repellent agent by the upper liquid roller 1 is kept, and the water repellent agent is fully absorbed by the upper liquid roller 1.
The sponge roller 2 is a rotatable cylindrical member covered with a porous sponge having pores communicating with each other. The sponge roller 2 has good flexibility and water absorbability, and can absorb and store a large amount of water repellent agent.
The liquid feeding roller 1 is stained with a water repellent agent through axial rotation, and the water repellent agent is transferred to a sponge roller 2 which rotates relative to the liquid feeding roller 1; the sponge roll 2, which is contaminated with the water repellent agent, transfers the water repellent agent to the applicator roll 3, which rotates relative to the sponge roll 2, by rotating axially.
Due to the arrangement of the liquid feeding roller 1 and the sponge roller 2, the waste of the water repellent agent can be effectively reduced, the utilization rate of the water repellent agent is improved, the uniformity of the water repellent agent stained by the coating roller 3 is improved, and the stability and the water repellent effect of a water repellent area are improved.
Further, the surface layer processing device according to the embodiment further includes a drying device 7 connected to the nonwoven fabric roll 5 by a conveying device.
The nonwoven is conveyed to a drying device 7 for drying by means of a nonwoven roller 5 and a conveying device connected to the nonwoven roller 5.
The drying device 7 may be various devices having a drying function, such as a hot air dryer, a microwave dryer, and the like, which is not limited in the present application.
The drying device 7 can further improve the stability of the water-repellent region formed by the non-woven fabric surface layer 9.
This embodiment surface course processing apparatus, can make things convenient for, quick reject water treatment to the non-woven fabrics, and the effect through water treatment is stable, and the non-woven fabrics surface course 9 that contains water-repellent region that obtains after water treatment rejects water effectually, can effectively improve disposable absorbent article surface course 9's dry and comfortable nature, improves disposable absorbent article's use comfort.
The absorbent layer 11 is a layered structure for absorbing and storing liquid in the disposable absorbent article, and the absorbent layer processing device is a device for preparing the absorbent layer 11 of the disposable absorbent article, in this embodiment, the absorbent layer processing device may be any existing device and device having a function of preparing the absorbent layer 11 or any device and device for cutting the prepared absorbent layer 11, which is not limited in this application.
The bottom layer 12 is a liquid leakage prevention layer structure of the disposable absorbent product, and the bottom layer processing device is a device for preparing the bottom layer 12 of the disposable absorbent product, and in this embodiment, the bottom layer processing device can be any existing device or device having the function of preparing the bottom layer 12, and the application is not limited thereto.
The compounding device is a device or a device for compounding the surface layer 9, the absorption layer 11 and the bottom layer 12 to obtain the disposable absorption product, and the compounding processing mode of the surface layer 9, the absorption layer 11 and the bottom layer 12 can be heat sealing, pressing, gluing or other compounding modes, which is not limited in the application.
It should be noted that, in this embodiment, the surface layer processing device, the absorbent layer processing device, the bottom layer processing device and the combining device are sequentially connected to form a continuous production line of the disposable absorbent article, and the arrangement order of the continuous production line may be the surface layer processing device, the absorbent layer processing device, the bottom layer processing device, the combining device, or the bottom layer processing device, the absorbent layer processing device, the surface layer processing device, the combining device, which is not limited in this application.
The device for preparing the disposable absorbent article provided by the embodiment carries out local water repellent treatment on the surface layer 9 in the preparation process of the disposable absorbent article through the surface layer treatment device, so that the surface layer 9 has a stable local water repellent effect, and on the basis of ensuring the softness, skin affinity and nonirritant of the disposable absorbent article, the dryness and cleanliness of the surface layer 9 of the disposable absorbent article can be effectively improved, and the use body feeling is improved.
Example 2
As shown in fig. 2, the present embodiment discloses a method for manufacturing a disposable absorbent article, including steps S210 to S220.
S210, preparing the surface layer 9, the absorption layer 11 and the bottom layer 12 sequentially through a surface layer treatment device, an absorption layer treatment device and a bottom layer treatment device.
Wherein, prepare face layer 9 through face layer processing apparatus, include:
the coating roller 3 which is pre-stained with the water repellent agent prints the water repellent agent on the original non-woven fabric covered on the outer surface of the non-woven fabric roller 5 which rotates relative to the coating roller 3 through axial rotation, and a surface layer 9 comprising at least one water repellent area is obtained.
The applicator roll 3 is a cylindrical machine member that is used for coating operations and is rotatable on the machine. The axial rotation is clockwise or counterclockwise about the axis of the cylindrical member of the application roller 3.
Preferably, the coating roll 3 may be provided with at least one protrusion 4, more preferably, the coating roll 3 is provided with a plurality of protrusions 4, the protrusions 4 are arranged along the outer surface of the coating roll 3 at intervals, one protrusion 4 stained with a water repellent agent is printed on the non-woven fabric to form a water repellent area, the shape or size of each protrusion 4 may be the same or different, and the protrusions are located on the side wall of the coating roll 3 and may be arranged at regular intervals or irregular intervals, which is not limited in the present application.
In practical application, the protrusions 4 which are pre-stained with the water repellent agent are printed on the non-woven fabric covered on the outer surface of the non-woven fabric roller 5 which rotates relative to the coating roller 3 along with the rotation of the coating roller 3, so that the non-woven fabric comprising at least one water repellent area is obtained.
A nonwoven fabric roll 5 is a cylindrical member for subjecting nonwoven fabric to water-repellent treatment and rotatable on a machine, and the nonwoven fabric roll 5 can convey the original nonwoven fabric to water-repellent treatment by means of rotation of one or more nonwoven fabric conveying rolls 6. The raw nonwoven fabric is a nonwoven fabric which has not been subjected to water repellency treatment.
The coating roller 3 and the non-woven fabric roller 5 are adjacent to each other and rotate relatively, for example, in the case that the coating roller 3 rotates counterclockwise, the non-woven fabric roller 5 rotates clockwise, when the protrusions 4 on the coating roller 3 rotate to the position contacting with the non-woven fabric roller 5, the water repellent agent stained on the protrusions 4 is printed on the non-woven fabric by the relative force between the coating roller 3 and the non-woven fabric roller 5, and a water repellent area is formed.
The method for performing water repellency treatment on the non-woven fabric is simple, convenient and quick to operate, waste of the water repellent agent can be avoided, resources are saved, the formed water repellent area is stable, and the water repellent effect is good.
Further, the method for water-repellent treatment of a nonwoven fabric according to this embodiment may further include the steps of:
the liquid feeding roller 1 is stained with a water repellent agent through axial rotation, and the water repellent agent is transferred to a sponge roller 2 which rotates relative to the liquid feeding roller 1; the sponge roll 2, which is contaminated with the water repellent agent, transfers the water repellent agent to the applicator roll 3, which rotates relative to the sponge roll 2, by rotating axially.
The liquid feeding roller 1 is a cylindrical machine member which is used for initially staining a water repellent agent and can rotate on a machine. The axial rotation is clockwise or counterclockwise rotation around the axis of the cylindrical part of the upper liquid roller 1.
The side surface of the upper liquid roller 1 can be made of materials with good hydrophilicity and water absorbability, such as velveteen or velveteen, a water repellent agent pool 8 for containing a water repellent agent is arranged below the upper liquid roller 1, and the liquid level of the water repellent agent in the water repellent agent pool 8 is always higher than the lowest point of the upper liquid roller 1, so that the smoothness of the operation of absorbing the water repellent agent by the upper liquid roller 1 is kept, and the water repellent agent is fully absorbed by the upper liquid roller 1.
Water repellents are preparations which are non-allergenic or hypoallergenic and have a water repellent effect. In the present embodiment, the water repellent agent may be a colorless and transparent water repellent oil agent or a water-oil mixed type water repellent agent, such as a silicone water repellent agent. The water repellent agent utilizes the property of low surface tension to reduce the surface tension of the hydrophilic non-woven fabric, thereby reducing the surface tension of the water repellent area part of the non-woven fabric to be lower than the surface tension of water, and achieving the effect of water repellency. The surface tension of the water repellent area of the non-woven fabric is reduced by the water repellent agent, so that the air permeability and the flexibility of the non-woven fabric are not influenced, and the water repellent effect is good.
The sponge roller 2 is a rotatable cylindrical member covered with a porous sponge having pores communicating with each other. The sponge roller 2 has good flexibility and water absorbability, and can absorb and store a large amount of water repellent agent.
The liquid feeding roller 1 and the sponge roller 2 are adjacent to each other and rotate relatively, for example, in the case that the liquid feeding roller 1 rotates counterclockwise, the sponge roller 2 rotates clockwise. When the liquid feeding roller 1 sucks the water repellent agent from the water repellent agent pool 8 and the part sucking the water repellent agent is transferred to the position contacting with the sponge roller 2, the water repellent agent sucked by the liquid feeding roller 1 is transferred to the sponge roller 2 through the relative acting force between the two parts.
The above-mentioned sponge roller 2 and the application roller 3 are in adjacent positions and rotate relatively, and for example, in the case where the sponge roller 2 rotates clockwise, the application roller 3 rotates counterclockwise. When the part of the sponge roller 2 which absorbs the water repellent agent is transferred to the position which is contacted with the coating roller 3, the projections 4 arranged on the coating roller 3 are used for staining the water repellent agent by extruding the sponge which is saturated with the water repellent agent on the sponge roller 2, and the subsequent water repellent treatment step is continued.
According to the water repellent treatment method of the non-woven fabric, the water repellent agent is absorbed by the liquid feeding roller 1, then is transferred to the coating roller 3 through the sponge roller 2, and finally is printed on the non-woven fabric to form the water repellent area, so that the utilization rate of the water repellent agent can be improved, the uniform contamination of the coating roller 3 is facilitated, and the problem that the non-woven fabric water repellent area is not uniform due to the non-uniform contamination of the water repellent agent of the coating roller 3 is avoided.
Further, the method for water-repellent treatment of a nonwoven fabric according to the present embodiment further includes:
the nonwoven is conveyed to a drying device 7 for drying by means of a nonwoven roller 5 and a conveying device connected to the nonwoven roller 5.
Specifically, various drying modes such as heat conduction drying, heat convection drying, heat radiation drying and the like can be adopted, and the application does not limit the drying modes.
The non-woven fabric forming the water-repellent area is dried, so that the stability of the water-repellent area can be improved, and the water-repellent effect of the non-woven fabric is improved.
S220, compounding the surface layer 9, the absorption layer 11 and the bottom layer 12 through a compounding device to obtain the disposable absorption product.
In this embodiment, the disposable absorbent article can be obtained by combining the surface layer 9, the absorbent layer 11, and the bottom layer 12 by a combining device through heat sealing, pressing, gluing, and the like.
The method for preparing the disposable absorbent article according to this embodiment can conveniently and quickly perform water repellent treatment on the surface layer 9, and the surface layer 9 including the water repellent region obtained after the water repellent treatment has a good water repellent effect, and the water repellent effect is stable.
Example 3
The embodiment discloses a non-woven fabric surface layer 9, the non-woven fabric surface layer 9 is used for disposable absorbent products and is manufactured by the surface layer processing device, and the non-woven fabric surface layer 9 comprises at least one water repellent area.
Nonwoven fabrics (Non Woven Fabric, Non Woven cloth) are also called Nonwoven fabrics, and are composed of oriented or random fibers. The non-woven fabric has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity or irritation, rich color, low price, recycling and the like, and can be widely applied to the fields of medical treatment and health, family decoration, clothing, industry, agriculture and the like.
The non-woven fabric surface layer 9 described in this embodiment is natural fiber or chemical fiber subjected to hydrophilic treatment.
The natural fiber is textile fiber obtained from natural or artificially cultured plants or artificially cultured animals. The natural fiber is used for the surface layer of the disposable absorbent product, which is beneficial to reducing the irritation of the surface layer and improving the softness, skin-friendly property, hydrophilicity and moisture absorption of the surface layer.
In this embodiment, the natural fiber includes any one or a combination of cotton fiber, bamboo charcoal fiber, viscose fiber, and chitin fiber. In other words, the nonwoven fabric surface layer 9 of the present embodiment may be single fibers such as cotton fibers, bamboo charcoal fibers, etc., or may be various mixed fibers such as a combination of bamboo fibers and bamboo charcoal fibers, a mixed fiber of cotton fibers, viscose fibers, chitin fibers, a mixed fiber of cotton fibers, bamboo charcoal fibers, a mixed fiber of viscose fibers and chitin fibers, etc., which is not limited in the present application.
The cotton fiber is seed fiber formed by elongation and thickening of epidermal cells of fertilized ovule, and the main component is cellulose. The cotton fiber is used for the pure cotton surface layer of the disposable absorption product, is soft and skin-friendly, has good air permeability, good heat resistance and good hydrophilicity, and is environment-friendly and pollution-free.
Bamboo fiber, also known as bamboo fiber, is a cellulose fiber extracted from naturally growing bamboo. The bamboo fiber is used for the bamboo fiber surface layer of the disposable absorption product, is beneficial to improving the performances of the surface layer such as air permeability, instant water absorption, wear resistance and the like, can also resist bacteria, inhibit bacteria and deodorize, is natural, environment-friendly and pollution-free.
The bamboo charcoal fiber is prepared by taking moso bamboo as a raw material, refining and honeycombing micropores of the natural bamboo charcoal by adopting a pure oxygen high temperature and nitrogen blocking time-delay calcination process and technology, and then carrying out melt spinning with a polyester modified slice with a honeycomb micropore structure trend. The bamboo charcoal fiber is used as the surface layer of the disposable absorption product, is beneficial to resisting and inhibiting bacteria, absorbing moisture and ventilating, and is green, environment-friendly and pollution-free.
Viscose (Viscose), abbreviated as Viscose, is cellulose fiber obtained by extracting and remolding fiber molecules from natural wood cellulose using wood as a raw material. The viscose fiber is used for the surface layer of the disposable absorbent product, is soft, skin-friendly, smooth, cool, good in air permeability and hygroscopicity, meets the physiological requirements of human skin, and is green and environment-friendly.
Chitin, also called chitin, has a chemical structure similar to that of cellulose and is the largest amount of nitrogen-containing natural organic compounds except proteins. Chitin and its derivative chitosan have certain ductility and filamentation, are good fiber forming materials, select proper spinning conditions, can make chitin fiber with higher intensity and elongation through the conventional wet spinning process. The chitin fiber is used for the surface layer of the disposable absorbent product, is soft, skin-friendly and non-irritant, is beneficial to antibiosis, deodorization and skin care, and is green and environment-friendly.
The chemical fiber is prepared with natural polymer or artificially synthesized polymer as material and through the steps of preparing spinning solution, spinning, post-treatment, etc. The chemical fiber is used for the soft surface layer of the disposable absorption product, has soft texture, smoothness, comfort and good wear resistance, but has poor water absorption, so before the chemical fiber is used for manufacturing the surface layer of the disposable absorption product, the chemical fiber is firstly subjected to hydrophilic treatment to improve the hydrophilicity.
In this embodiment, the chemical fiber includes any one or a combination of polypropylene fiber, polyethylene fiber, polyester fiber, and composite fiber. In other words, the nonwoven fabric of the present embodiment may be a single fiber such as a polypropylene fiber, a polyethylene fiber, and a polyester fiber subjected to hydrophilic treatment, or various mixed fibers such as a mixed fiber of a polypropylene fiber and a polyethylene fiber, and a mixed fiber of a polyethylene fiber and a polyester fiber subjected to hydrophilic treatment, which is not limited in the present application.
Polypropylene fibers, also known as PP fibers and polypropylene fibers, are synthetic fibers spun from isotactic polypropylene obtained by polymerizing propylene. The polypropylene fiber after hydrophilic treatment is used for the surface layer of the disposable absorbent product, is soft and skin-friendly, has the effects of antibiosis and odor elimination, good hydrophilicity, low cost and good economic benefit.
Polyethylene fibers, also known as PE fibers and polyethylene fibers, are fiber materials obtained by spinning polyethylene through a melt spinning method, and have the advantages of stable chemical properties, high strength, low density and the like. The hydrophilic polyethylene fiber is used for the surface layer of the disposable absorbent product, has strong wear resistance, no irritation, good hydrophilicity, low cost and good economic benefit.
Polyester fiber, also known as PET fiber and terylene, is synthetic fiber obtained by spinning polyester formed by polycondensation of organic dibasic acid and dihydric alcohol, and belongs to a high molecular compound. The polyester fiber after hydrophilic treatment is used for the surface layer of the disposable absorption product, and has good wrinkle resistance, shape retention, stability and hydrophilicity.
The composite fiber is also called ES fiber, after the ES fiber is heat treated, the fiber is mutually connected to form a non-woven fabric forming body without adhesive. The composite fiber after hydrophilic treatment is used for the surface layer of the disposable absorbent product, and has no irritation, good stability and good hydrophilicity.
In this embodiment, the water-repellent region refers to a region of the nonwoven fabric subjected to water-repellent treatment and having a water-repellent function. The nonwoven fabric includes at least one water repellent zone, and preferably a plurality of water repellent zones, to enhance the freshness of the nonwoven fabric facing 9 for use in the disposable hydrophilic article.
Specifically, in the present embodiment, the water-repellent regions are arranged at intervals. The water-repellent regions may be regularly spaced or irregularly spaced, and may be various regularly or irregularly shaped regions such as triangles, quadrangles, circles, hexagons, and the like.
Taking fig. 3, fig. 4 and fig. 5 as examples, fig. 3, fig. 4 and fig. 5 are schematic diagrams of the water repellent area of the nonwoven fabric facing 9 of the present embodiment. Referring to fig. 3, the white part in fig. 3 represents a water-repellent region, and in the non-woven fabric surface layer 9 shown in fig. 3, the water-repellent region is rhombic and arranged at regular intervals; referring to fig. 4, the black part in fig. 4 represents a water-repellent region, and in the nonwoven fabric facing 9 shown in fig. 4, the water-repellent region is circular and arranged at regular intervals; referring to fig. 5, in the nonwoven fabric facing 9 shown in fig. 5, the water-repellent regions are irregularly shaped but regularly spaced. Other situations can be analogized, which is not described again, and the present application is not limited thereto.
Specifically, the sum of the areas of the water-repellent areas is 1-99% of the area of the non-woven fabric surface layer 9. The sum of the areas of the water-repellent regions may be 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, etc. of the area of the nonwoven fabric facing 9, although the present application is not limited thereto.
Preferably, the sum of the areas of the water-repellent areas is 50-99% of the area of the non-woven fabric surface layer 9, so that the dryness of the non-woven fabric for the disposable absorbent product is further improved on the premise of ensuring the hydrophilicity and the hygroscopicity of the non-woven fabric.
Specifically, the non-woven fabric surface layer 9 is prepared by subjecting an application roller 3 stained with a water repellent agent, a non-woven fabric roller 5 rotating relative to the application roller 3, and an original non-woven fabric covering the non-woven fabric roller 5 to water repellent treatment.
Wherein the water repellent is a non-sensitizing or low-sensitizing agent having a water-repellent effect. In the present embodiment, the water repellent agent may be a colorless and transparent water repellent oil agent or a water-oil mixed type water repellent agent, such as a silicone water repellent agent. The water repellent agent utilizes the property of low surface tension to reduce the surface tension of the non-woven fabric surface layer 9 with hydrophilicity, namely, the surface tension of the water repellent area part of the non-woven fabric surface layer 9 is reduced, so that the surface tension is lower than the surface tension of water, and the effect of water repellency is achieved. The surface tension of the water repellent area of the non-woven fabric surface layer 9 is reduced by the water repellent agent, the air permeability and the flexibility of the non-woven fabric are not influenced, and the water repellent effect is good.
The non-woven fabric surface layer 9 provided by the embodiment is thin, soft, skin-friendly and non-irritant, has good moisture absorption, air permeability and hydrophilicity, and also has good local water repellency and dryness, and is widely applicable to various types of disposable absorbent products, so that the dryness and cleanliness of the disposable absorbent products are improved, and the user feeling is improved.
Example 4
As shown in fig. 6, this example provides a disposable absorbent article comprising a surface layer 9, an absorbent layer 11 and a back layer 12 in this order from top to bottom, which is prepared by the apparatus and method for preparing the disposable absorbent article of the above examples.
The surface layer 9, also called as surface layer, is the part of the disposable absorbent product directly contacting with the skin, the surface layer 9 is made of the non-woven fabric with the water repellent area after water repellent treatment, and can avoid the liquid residue in the using process and greatly improve the dryness of the surface layer 9 on the basis of ensuring the softness, skin-friendly property, no irritation and air permeability of the non-woven fabric.
The absorbent layer 11, which is a layered structure for absorbing and storing liquid and preventing liquid from rewetting, is located between the topsheet 9 and the backsheet 12 of the disposable absorbent article. The absorbent layer 11 can be made of materials such as high-quality wood pulp and super absorbent resin as base materials to better lock secretions such as liquid and avoid backflow and uncomfortable feeling, and further improve the cleanness of the disposable absorbent product, which is not limited by the application.
The bottom layer 12 is a liquid leakage prevention hierarchical structure and is positioned below the absorption layer 11 of the disposable absorption product, and the bottom layer 12 is usually made of a breathable and waterproof material, so that the breathability of the disposable absorption product is enhanced on the basis of preventing liquid leakage, and the damp feeling in use is reduced.
It should be noted that the disposable absorbent article in this embodiment may be a disposable article having a liquid absorption function, such as a sanitary napkin, a panty liner, a diaper, a nursing pad, and the like, and may further include other different hierarchical structures according to the specific type of the sequential absorbent article, for example, in the case that the disposable absorbent article is a sanitary napkin, it may further include a back adhesive layer, a release paper layer, and the like, and in the case that the disposable absorbent article is a diaper, it may further include leg opening leakage-proof sides, and the like.
The disposable absorbent product provided by the embodiment has the advantages that on the basis of ensuring softness, skin affinity, no irritation and air permeability, the dryness of the disposable absorbent product is greatly improved by arranging the surface layer 9 containing the water repellent area, the sensitivity is reduced, and the use comfort is improved.
Example 5
As shown in fig. 7, the present embodiment provides a disposable absorbent article, which is a sanitary napkin, and the sanitary napkin sequentially comprises, from top to bottom, a surface layer 9, a flow guiding layer 10, an absorbing layer 11, a bottom layer 12, a back adhesive layer 13 and a release paper layer 14, wherein the surface layer 9 is made of the above-mentioned nonwoven fabric with water-repellent treated water-repellent regions.
The surface layer 9, also called as surface layer, is the part of the disposable absorbent product directly contacting with the skin, the surface layer 9 is made of the non-woven fabric with the water repellent area after water repellent treatment, and can avoid the liquid residue in the using process and greatly improve the dryness of the surface layer 9 on the basis of ensuring the softness, skin-friendly property, no irritation and air permeability of the non-woven fabric.
The flow guide layer 10 is a hierarchical structure used for longitudinal backflow and promoting liquid to rapidly seep downwards, is positioned between the surface layer 9 and the absorption layer 11 of the disposable absorption product, and the flow guide layer 10 can be made of materials such as hot air non-woven fabrics.
The absorbent layer 11, which is a layered structure for absorbing and storing liquid and preventing liquid from rewetting, is located between the baffle layer 10 and the bottom layer 12 of the disposable absorbent article. The absorbent layer 11 can be made of materials such as high-quality wood pulp and super absorbent resin as base materials to better lock secretions such as liquid and avoid backflow and uncomfortable feeling, and further improve the cleanness of the disposable absorbent product, which is not limited by the application.
The bottom layer 12 is a hierarchical structure for preventing liquid leakage and is positioned between the absorption layer 11 and the back adhesive layer 13 of the disposable absorption product, and the bottom layer 12 is usually made of a breathable and waterproof material, so that the breathability of the disposable absorption product is enhanced on the basis of preventing liquid leakage, and the damp feeling of use is reduced.
The back adhesive layer 13 is a layered structure for fixing the disposable absorbent article, and is located below the bottom layer 12 of the disposable absorbent article, and the back adhesive layer 13 is usually made of a waterproof material to further prevent liquid from leaking. The area of the back adhesive layer 13 is smaller than or equal to the area of the bottom layer 12, and the back adhesive layer 13 may include one or more sub-layers arranged at intervals, which may be determined as the case may be, and the application is not limited thereto.
The release paper layer 14 is a release paper layer that prevents the adhesion of the prepreg and protects the prepreg from contamination. The release paper is made of paper coated with an anti-adhesive substance and has the same area as the back adhesive layer 13.
The surface layer 9, the flow guide layer 10, the absorption layer 11, the bottom layer 12, the back adhesive layer 13 and the release paper layer 14 of the disposable absorbent article may be joined by gluing, heat sealing, ultrasonic bonding, and the like, which is not limited in this application.
The sanitary napkin of the disposable absorbent article of the embodiment has the advantages that the dryness is greatly improved, the sensitivity is reduced, and the use comfort is improved by arranging the surface layer 9 containing the water repellent area on the basis of ensuring the softness, the skin affinity, the nonirritant and the air permeability.
In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used only to indicate relative positional relationships between relevant portions, and do not limit absolute positions of the relevant portions.
In this document, "first", "second", and the like are used only for distinguishing one from another, and do not indicate the degree and order of importance, the premise that each other exists, and the like.
In this context, "equal", "same", etc. are not strictly mathematical and/or geometric limitations, but also include tolerances as would be understood by a person skilled in the art and allowed for manufacturing or use, etc.
Unless otherwise indicated, numerical ranges herein include not only the entire range within its two endpoints, but also several sub-ranges subsumed therein.
The preferred embodiments and examples of the present application have been described in detail with reference to the accompanying drawings, but the present application is not limited to the embodiments and examples described above, and various changes can be made within the knowledge of those skilled in the art without departing from the concept of the present application.
Claims (9)
1. A device for making disposable absorbent articles, comprising: the surface course processing apparatus that is used for preparing including at least one water repellent zone's surface course (9), the absorbed layer processing apparatus that is used for preparing absorbed layer (11), the bottom processing apparatus that is used for preparing bottom (12) and be used for compound in proper order surface course (9) absorbed layer (11) with the set composite of bottom (12), wherein, surface course processing apparatus includes coating roll (3) and non-woven fabrics roller (5), coating roll (3) with non-woven fabrics roller (5) axial direction parallel and relative rotation, the surface covering of non-woven fabrics roller (5) has original non-woven fabrics.
2. The apparatus for preparing disposable absorbent articles according to claim 1, characterized in that the surface layer treatment apparatus further comprises a liquid application roller (1) and a sponge roller (2), the liquid application roller (1), the sponge roller (2) and the coating roller (3) are all axially parallel, the liquid application roller (1) and the sponge roller (2) rotate relatively, and the sponge roller (2) and the coating roller (3) rotate relatively.
3. The device for manufacturing disposable absorbent articles according to claim 1, characterized in that the coating roll (3) is provided with a plurality of protrusions (4), and the protrusions (4) are arranged at intervals along the outer surface of the coating roll (3).
4. The apparatus for manufacturing disposable absorbent articles according to claim 1, characterized in that the facing layer treatment apparatus further comprises a drying device (7), and the drying device (7) is connected to the nonwoven roll (5) by a conveyor.
5. A method of making a disposable absorbent article, characterized in that a device for making a disposable absorbent article according to any of claims 1-4, said method comprising:
loop through surface course processing apparatus, absorbed layer processing apparatus, bottom processing apparatus preparation and obtain surface course (9), absorbed layer (11) and bottom (12), wherein, obtain surface course (9) through surface course processing apparatus preparation, include: the method comprises the following steps that a coating roller (3) which is stained with a water repellent agent in advance prints the water repellent agent on original non-woven fabric covered on the outer surface of a non-woven fabric roller (5) rotating relative to the coating roller (3) through axial rotation to obtain a surface layer (9) comprising at least one water repellent area;
the surface layer (9), the absorption layer (11) and the bottom layer (12) are compounded by a compounding device to prepare the disposable absorption product.
6. The method of manufacturing a disposable absorbent article according to claim 5, further comprising, before said application roller (3) contaminated with a water repellent agent prints the water repellent agent onto the original nonwoven fabric covered on the outer surface of the nonwoven fabric roller (5) rotating opposite to said application roller (3) by axial rotation:
the liquid feeding roller (1) is stained with a water repellent agent through axial rotation, and the water repellent agent is transferred to the sponge roller (2) which rotates relative to the liquid feeding roller (1);
the sponge roller (2) stained with the water repellent agent transfers the water repellent agent to a coating roller (3) rotating relative to the sponge roller (2) through axial rotation.
7. The method of making a disposable absorbent article of claim 5, further comprising:
the non-woven fabric is conveyed to a drying device (7) for drying through a non-woven fabric roller (5) and a conveying device connected with the non-woven fabric roller (5).
8. The method for manufacturing a disposable absorbent article according to claim 5, characterized in that the coating roll (3) is provided with a plurality of protrusions (4), the protrusions (4) being arranged at intervals along the outer surface of the coating roll (3);
the coating roller (3) which is stained with the water repellent agent in advance prints the water repellent agent on the non-woven fabric covered on the outer surface of the non-woven fabric roller (5) which rotates relative to the coating roller (3) through axial rotation, and the method comprises the following steps:
the bulges (4) which are pre-stained with the water repellent agent rotate along with the coating roller (3) to print the water repellent agent on the non-woven fabric covered on the outer surface of the non-woven fabric roller (5) which rotates relative to the coating roller (3), so as to obtain a surface layer (9) comprising at least one water repellent area.
9. A disposable absorbent article, characterized in that it is manufactured by the apparatus for manufacturing a disposable absorbent article according to any one of claims 1 to 4, and comprises, from top to bottom, a top layer (9), an absorbent layer (11) and a bottom layer (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911340872.1A CN110916902A (en) | 2019-12-23 | 2019-12-23 | Disposable absorbent article and apparatus and method for making same |
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| CN201911340872.1A CN110916902A (en) | 2019-12-23 | 2019-12-23 | Disposable absorbent article and apparatus and method for making same |
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Application publication date: 20200327 |