CN114569336A - Activated carbon dust-free paper, production device thereof and disposable nursing sanitary product - Google Patents

Activated carbon dust-free paper, production device thereof and disposable nursing sanitary product Download PDF

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Publication number
CN114569336A
CN114569336A CN202210254325.7A CN202210254325A CN114569336A CN 114569336 A CN114569336 A CN 114569336A CN 202210254325 A CN202210254325 A CN 202210254325A CN 114569336 A CN114569336 A CN 114569336A
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CN
China
Prior art keywords
activated carbon
layer
free paper
carbon dust
woven fabric
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Pending
Application number
CN202210254325.7A
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Chinese (zh)
Inventor
李秋红
胡宝苓
李博
张�杰
瞿小刚
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Beijing Beishute Maternity & Child Articles Co ltd
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Beijing Beishute Maternity & Child Articles Co ltd
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Priority to CN202210254325.7A priority Critical patent/CN114569336A/en
Publication of CN114569336A publication Critical patent/CN114569336A/en
Pending legal-status Critical Current

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    • 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
    • A61F13/84—Accessories, not otherwise provided for, for absorbent pads
    • A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
    • 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
    • A61F13/15804—Plant, e.g. involving several steps
    • 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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • 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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/04—Layered products comprising a layer of paper or cardboard next to a particulate layer
    • 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
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • 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
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • 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
    • 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
    • B32B5/16—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 features of a layer formed of particles, e.g. chips, powder or granules
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/30—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being formed of particles, e.g. chips, granules, powder
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/002—Tissue paper; Absorbent paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • 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
    • A61F13/15804—Plant, e.g. involving several steps
    • A61F2013/15813—Plant, e.g. involving several steps with modular lines
    • 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
    • A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
    • A61F2013/15861—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding
    • A61F2013/15878—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding by thermal bonding
    • 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
    • A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
    • A61F2013/15934—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for making non-woven
    • A61F2013/15991—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for making non-woven in making composite multi-layered product
    • 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
    • A61F13/84—Accessories, not otherwise provided for, for absorbent pads
    • A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
    • A61F2013/8408—Additives, e.g. for odour, disinfectant or pH control with odour control
    • A61F2013/842—Additives, e.g. for odour, disinfectant or pH control with odour control with active charcoal
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/107—Ceramic
    • B32B2264/108—Carbon, e.g. graphite particles
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/758—Odour absorbent
    • 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
    • B32B2555/00—Personal care
    • B32B2555/02—Diapers or napkins

Abstract

The invention discloses activated carbon dust-free paper, a production device thereof and a disposable nursing sanitary article, and belongs to the field of sanitary articles. The activated carbon dust-free paper comprises an upper liquid guide layer, an upper bonding layer, an adsorption layer, a lower bonding layer and a lower liquid guide layer, wherein the adsorption layer is a granular activated carbon layer. The granular activated carbon layer adopts 20-70 mesh activated carbon granules. The activated carbon particles are subjected to decoloring pretreatment by adopting a water washing or polishing process. The invention develops the porous active carbon dust-free paper with particles by arranging the granular active carbon subjected to pre-decoloration treatment between the upper liquid guide layer and the lower liquid guide layer, so that when the porous active carbon dust-free paper is applied to various disposable sanitary products, the problem of black leakage on the surface layer of the product can be prevented, and the problems of material pollution and equipment pollution in the production and processing of the existing incontinence product with the active carbon are solved; and by utilizing the characteristics of the granular activated carbon, the good odor-removing adsorption effect of the adsorption type odor-removing incontinence product is improved, the satisfaction degree of a user is improved, and the embarrassment problem of using the incontinence product is avoided.

Description

Activated carbon dust-free paper, production device thereof and disposable nursing sanitary product
Technical Field
The invention relates to the field of sanitary products, in particular to activated carbon dust-free paper, a production device thereof and a disposable nursing sanitary product.
Background
In order to avoid embarrassment of incontinence people in life, incontinence pad products are used with great confidence, various methods are tried in the industry to introduce a urine smell removing function into the incontinence products, and three main implementation modes are fragrance shielding, urine smell adsorption and antibacterial substance addition. Wherein, the fragrance shielding mode does not completely solve the embarrassment, but can be counterproductive, and the secrecy of the incontinence people is further exposed; the product with the fungus inhibiting substances cannot be suitable for all people, and may bring potential safety hazards to some sensitive people. Thus, incontinence products with a urine odour adsorption principle are safer for the user.
The activated carbon adsorbent has the characteristics of more pores, high adsorption rate, large specific surface area and the like, and is naturally the first choice material for the research and development of the products. However, in the product realization process, the activated carbon adsorbent material is difficult to be added into the incontinence product, because the activated carbon generally exists in the form of fine powder or particles, the fine powder has poor adsorption effect, and the particles have stronger adsorption effect due to large pores, so that the activated carbon adsorbent material is more suitable for removing odor. However, granular activated carbon is a brittle material and is easily crushed, and when the product is compacted, there are problems in that not only is the equipment contaminated and the contacted material is contaminated to black, but also the adsorption performance is not satisfactory due to the crushed granules.
In order to solve the problems, the invention creates the activated carbon dust-free paper for the incontinence products and the production device thereof, so that the problems of equipment pollution and activated carbon particle crushing are solved, and the activated carbon dust-free paper can realize stronger odor removing and adsorbing functions after being applied to the products.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the activated carbon dust-free paper, so that the activated carbon exists in a granular shape, the activated carbon dust-free paper not only has a strong odor removing and adsorbing function, but also can solve the problem of activated carbon equipment pollution or clothes, and further overcomes the defects of the existing incontinence products.
In order to solve the technical problem, the invention provides an activated carbon dust-free paper which comprises an upper liquid guide layer, an upper bonding layer, an adsorption layer, a lower bonding layer and a lower liquid guide layer, wherein the adsorption layer is a granular activated carbon layer.
Further improved, the granular activated carbon layer adopts 20-70 mesh activated carbon granules, and the iodine adsorption value is 700-1400 mg/g.
Further improved, the activated carbon particles are subjected to decoloring pretreatment by adopting a water washing or polishing process.
Further improved, the upper liquid guiding layer is made of toilet paper, spun-bonded non-woven fabric, hot-air non-woven fabric, hot-rolled non-woven fabric, SMS non-woven fabric or melt-blown non-woven fabric.
The lower liquid guiding layer is further improved by adopting toilet paper, spun-bonded non-woven fabric, hot air non-woven fabric, hot rolled non-woven fabric, SMS non-woven fabric or melt-blown non-woven fabric.
The improved structure is characterized in that the upper bonding layer and the lower bonding layer are hot melt adhesives sprayed in a spiral mode.
As an improvement of the invention, the invention also provides a production device of the activated carbon dust-free paper, wherein a blanking roller with punctiform concave points on the surface is adopted as the blanking roller for blanking the granular activated carbon in the production device.
In a further improvement, the compacting rollers used for compacting the activated carbon dust-free paper in the production device adopt soft rubber rollers or foam rollers, and the compacting pressure of the soft rubber rollers or the foam rollers is 0.3-0.5 MPa.
As a further improvement, the invention also provides a disposable nursing sanitary product which comprises the activated carbon dust-free paper.
In a further improvement, the sanitary product is an incontinence pad, a paper diaper, a safety pad or a sanitary towel.
After adopting such design, the invention has at least the following advantages:
according to the activated carbon dust-free paper, the granular activated carbon subjected to pre-decoloration treatment is arranged between the upper liquid guide layer and the lower liquid guide layer, so that the dust-free paper with the granular porous activated carbon is developed, the problem that the surface of a product is black when the dust-free paper is applied to various disposable sanitary products can be solved, and the problems that the existing product with activated carbon incontinence pollutes materials and production equipment during production and processing are solved; and the granular activated carbon has strong odor-removing adsorbability, so that the good odor-removing adsorption effect of the adsorption type odor-removing incontinence product is improved, the product permeability is not influenced, the user satisfaction is improved, and the embarrassment problem of using the incontinence product is avoided.
The production device of the activated carbon dust-free paper provided by the invention is used for innovating the blanking roller and the compaction roller of the production device aiming at the characteristics of the adsorption layer in the dust-free paper, so that the production and processing requirements of the activated carbon dust-free paper can be met, the integrity of granular activated carbon is ensured, and the odor removal and adsorption performance of the dust-free paper is improved.
Drawings
The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.
Fig. 1 is a schematic structural diagram of the activated carbon dust-free paper of the present invention.
FIG. 2 is a front view of the surface structure of a blanking roller in the apparatus for producing activated carbon dust-free paper of the present invention.
FIG. 3 is a side view showing the surface structure of a blanking roller in the apparatus for producing activated carbon dust-free paper of the present invention.
Wherein, 1, upper liquid guide layer, 2, upper bonding layer, 3, adsorption layer, 4, lower bonding layer, 5, lower liquid guide layer, 6, blanking roller surface, 7, concave point.
Detailed Description
Referring to fig. 1, the activated carbon dust-free paper of the present embodiment includes an upper liquid guide layer 1, an upper adhesive layer 2, an adsorption layer 3, a lower adhesive layer 4, and a lower liquid guide layer 5.
Wherein, the upper liquid guiding layer 1 is made of materials with coating, liquid guiding and liquid permeating effects, such as toilet paper, spun-bonded non-woven fabric, hot-air non-woven fabric, hot-rolled non-woven fabric, SMS non-woven fabric or melt-blown non-woven fabric. The upper liquid-guiding layer has a material basis weight of 12-20 gsm.
The upper bonding layer 2 adopts various types of hot melt adhesives in the sanitary product industry, and the upper liquid guide layer 1 is fixed on the absorption layer 3 in a spiral spraying mode at the temperature of 120-150 ℃.
The adsorption layer 3 adopts a granular activated carbon layer. The granular activated carbon layer adopts 20-70 meshes of activated carbon granules, and the iodine adsorption value is 700-1400 mg/g. And the activated carbon particles are subjected to decoloring pretreatment by adopting a water washing or polishing process in advance, so that the activated carbon particles are prevented from fading in use and polluting production equipment or clothes.
The lower adhesive layer 4 is made of hot melt adhesives of various types in the sanitary product industry, and the adsorption layer 3 is fixed on the lower liquid guide layer 5 in a spiral spraying mode at the temperature of 120-150 ℃. Of course, the hot melt adhesives used for the upper adhesive layer 2 and the lower adhesive layer 4 can be the same or different.
The lower liquid guide layer 5 is made of 12-20gsm materials with coating, liquid guiding and liquid permeating effects, such as toilet paper, spun-bonded non-woven fabric, hot-air non-woven fabric, hot-rolled non-woven fabric, SMS non-woven fabric or melt-blown non-woven fabric.
The materials used for the upper liquid-guiding layer 1 and the lower liquid-guiding layer 5 may be the same or different. And the basis weights of the materials used may be the same or different. For example, the upper liquid guide layer 1 is made of 12-20gsm toilet paper, and the lower liquid guide layer 5 is made of 12-20gsm toilet paper; or 12-20gsm hot air cloth is used as the upper liquid guide layer 1, and 12-20gsm toilet paper is used as the lower liquid guide layer 5; alternatively, the upper liquid-guiding layer 1 may be 12-20gsm meltblown, the lower liquid-guiding layer 5 may be 12-20gsm toilet paper, etc.
In the preparation process of the activated carbon dust-free paper, the pretreatment step of the activated carbon can be completed independently, or can be continuously performed with the subsequent dust-free paper processing technology.
In order to prevent the granular activated carbon in the adsorption layer from being crushed during the processing of the activated carbon dust-free paper, or to meet the purpose of uniform distribution of the granular activated carbon, the production device of the activated carbon dust-free paper of the embodiment is modified as follows.
Firstly, the blanking roller for blanking the granular activated carbon in the production device of the activated carbon dust-free paper adopts the blanking roller with the surface provided with the punctiform concave points, so that the granular activated carbon can be uniformly dispersed on the lower liquid guide layer 5 during blanking. As shown in fig. 2, which is a front view of the surface structure of the blanking roller in the present embodiment, and fig. 3, which is a side view of the surface structure of the blanking roller in the present embodiment, the pits 7 on the surface 6 of the blanking roller are hexagonal pits. Of course, a circular concave structure may be adopted as long as the granular activated carbon is uniformly dispersed on the lower liquid guide layer 5 and is not easily crushed during blanking.
Secondly, soft rubber rollers or foam rollers are adopted as compaction rollers for compacting the activated carbon dust-free paper in the production device, and the compaction pressure of the soft rubber rollers or the foam rollers is 0.3-0.5MPa, preferably 0.4 MPa. Therefore, the granular active carbon can be prevented from being crushed in the processing process of the active carbon dust-free paper, so that the granular active carbon is ensured to be granular, and the extremely strong odor-removing adsorption performance is met.
In the embodiment, the structures of other parts of the production device of the activated carbon dust-free paper can adopt the existing structures of the existing devices, so that the production and processing functions of the activated carbon dust-free paper are met.
The activated carbon dust-free paper can be directly used in disposable nursing sanitary products, such as incontinence pads, disposable diapers, safety pads or sanitary towel products, and can further improve the odor-removing adsorption performance of the sanitary products without influencing the permeability.
The activated carbon dust-free paper has the characteristics of reasonable structure, simple production process, odor removal, good liquid permeability, no carbon leakage in the production and use processes, and good practical application effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the above description of the present invention can be applied to various modifications, equivalent variations or modifications without departing from the spirit and scope of the present invention.

Claims (10)

1. The activated carbon dust-free paper is characterized by comprising an upper liquid guide layer, an upper bonding layer, an adsorption layer, a lower bonding layer and a lower liquid guide layer, wherein the adsorption layer is a granular activated carbon layer.
2. The activated carbon dust-free paper as claimed in claim 1, wherein the granular activated carbon layer is made of 20-70 mesh activated carbon granules, and the iodine adsorption value is 700-1400 mg/g.
3. The activated carbon dust-free paper as claimed in claim 2, wherein the activated carbon particles are subjected to a decoloring pretreatment using a water washing or polishing process.
4. The activated carbon dust-free paper as claimed in claim 1, wherein the upper liquid guiding layer is toilet paper, spun-bonded non-woven fabric, hot-air non-woven fabric, hot-rolled non-woven fabric, SMS non-woven fabric or melt-blown non-woven fabric.
5. The activated carbon dust-free paper as claimed in claim 1, wherein the lower liquid guiding layer is toilet paper, spun-bonded non-woven fabric, hot-air non-woven fabric, hot-rolled non-woven fabric, SMS non-woven fabric or melt-blown non-woven fabric.
6. The activated carbon dust-free paper as claimed in claim 1, wherein the upper and lower adhesive layers are hot melt adhesives sprayed in a spiral manner.
7. An apparatus for producing activated carbon dust-free paper as described in any one of claims 1 to 6, wherein a blanking roller having a surface with dot-like concave points is used as a blanking roller for blanking granular activated carbon in said apparatus.
8. The activated carbon dust-free paper production device as claimed in claim 7, wherein the compaction rollers for compacting the activated carbon dust-free paper in the production device are soft rubber rollers or foam rollers, and the compaction pressure of the soft rubber rollers or the foam rollers is 0.3-0.5 MPa.
9. A disposable hygienic article characterized by comprising the activated carbon dust-free paper according to any one of claims 1 to 6.
10. The disposable care hygiene article according to claim 9, characterized in that said hygiene article is an incontinence pad, a diaper, a soothing pad or a sanitary napkin.
CN202210254325.7A 2022-03-15 2022-03-15 Activated carbon dust-free paper, production device thereof and disposable nursing sanitary product Pending CN114569336A (en)

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