[go: up one dir, main page]

CN108819412B - Adult postoperative care pad and preparation method thereof - Google Patents

Adult postoperative care pad and preparation method thereof Download PDF

Info

Publication number
CN108819412B
CN108819412B CN201810221524.1A CN201810221524A CN108819412B CN 108819412 B CN108819412 B CN 108819412B CN 201810221524 A CN201810221524 A CN 201810221524A CN 108819412 B CN108819412 B CN 108819412B
Authority
CN
China
Prior art keywords
fiber
woven fabric
layer
woven fabrics
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201810221524.1A
Other languages
Chinese (zh)
Other versions
CN108819412A (en
Inventor
郝丽君
刘秋萍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201810221524.1A priority Critical patent/CN108819412B/en
Publication of CN108819412A publication Critical patent/CN108819412A/en
Application granted granted Critical
Publication of CN108819412B publication Critical patent/CN108819412B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices ; Anti-rape devices
    • A61F5/48—Devices for preventing wetting or pollution of the bed
    • A61F5/485—Absorbent protective pads
    • 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
    • B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
    • B32B23/10—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose next to a fibrous or filamentary 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • 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
    • B32B5/24—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 a fibrous or filamentary layer
    • B32B5/26—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 a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/046—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0223—Vinyl resin fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/04—Cellulosic plastic fibres, e.g. rayon
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • 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
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • 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
    • B32B2307/724—Permeability to gases, adsorption
    • 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
    • B32B2307/728—Hydrophilic
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nursing (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Materials For Medical Uses (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

The invention provides an adult postoperative care pad and a preparation method thereof, wherein the care pad comprises surface layer non-woven fabrics; the surface layer non-woven fabric is spunlace non-woven fabric, and is prepared from polylactic acid fiber, acrylic fiber, chitosan fiber, carboxymethyl cellulose fiber and enteromorpha fiber according to the weight ratio of 3: 3: 5: 1: 5, and mixing the components according to the mass ratio. The nursing pad also comprises a bottom film; the basement membrane be waterproof ventilative basement membrane, glue the non-woven fabrics complex by chitosan fiber non-woven fabrics, PE polymer ventilated membrane and PP and form, the thickness ratio that chitosan fiber non-woven fabrics, PE polymer ventilated membrane and PP glued the non-woven fabrics is 1: 2: 1, the thickness of the formed bottom film is 0.01-0.015mm, and the air permeability of the bottom film is 2680-2690 g/square/24 hours. The postoperative care pad has remarkable antibacterial, breathable and wear-resistant effects.

Description

Adult postoperative care pad and preparation method thereof
Technical Field
The invention belongs to the technical field of clinical care products, and particularly relates to an adult postoperative care pad and a preparation method thereof.
Background
The nursing pad can be divided into a baby nursing pad, a puerpera nursing pad and an adult nursing pad; is mainly used for hospital operation, gynecological examination, puerperal nursing, infant nursing, incontinence of urine and feces of paralyzed patients and women in menstrual period.
The infant care pad is mainly used for newborns and plays a role of isolating urine, and therefore, the infant care pad is also called a urine isolation pad. The nursing pad for lying-in women is a necessary article for the postpartum period and is also called a delivery pad. After the child is born, a large amount of lochia flows out every day in the first half month, and the common sanitary towel cannot meet the requirement, so that a special nursing pad for the lying-in woman is needed.
The adult nursing pad is mainly used for postoperative people, paralyzed people and people who can not take care of oneself in life. Particularly, the nursing pad used by a patient after an operation needs to be clean and sterile except for the function of isolation and protection, and the existing postoperative nursing pad is usually used for the patient after the ordinary nursing pad is sterilized, but the nursing pad treated in the way is only the ordinary nursing pad subjected to aseptic treatment and does not have the antibacterial and bacteriostatic effects, and the sterilization treatment before the use is more complicated, and can only be aseptic in a short time and does not have the long-acting bacteriostatic effect. If bacteria are bred during use, the wound is polluted, and the nursing of postoperative patients is extremely unfavorable.
Moreover, the nursing pad in the prior art has poor air permeability, and normal breathing of skin cells is influenced when the nursing pad is used by a patient who cannot move after operation; meanwhile, when the nursing pad is used, the movable patient turns over, gets up and the like, so that the surface of the nursing pad is fluffed and damaged due to the friction between the human body and the surface non-woven fabric.
In summary, the prior art clinical care pad for postoperative adults has the following drawbacks: (1) the bacteriostatic effect is poor; (2) the air permeability is poor; (3) the surface layer has poor abrasion resistance.
Disclosure of Invention
The invention provides an adult postoperative care pad and a preparation method thereof, which aim to achieve the following purposes: improve the antibacterial property, the air permeability and the wear resistance of the adult postoperative care pad.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an adult postoperative nursing pad and a preparation method thereof are provided, wherein the nursing pad sequentially comprises a surface layer non-woven fabric, a flow guiding breathable layer, a water absorbing layer and a bottom membrane from top to bottom.
The surface layer non-woven fabric is spunlace non-woven fabric, and is prepared from polylactic acid fiber, acrylic fiber, chitosan fiber, carboxymethyl cellulose fiber and enteromorpha fiber according to the weight ratio of 3: 3: 5: 1: 5, and mixing the components according to the mass ratio.
The basement membrane be waterproof ventilative basement membrane, glue the non-woven fabrics complex by chitosan fiber non-woven fabrics, PE polymer ventilated membrane and PP and form, the thickness ratio that chitosan fiber non-woven fabrics, PE polymer ventilated membrane and PP glued the non-woven fabrics is 1: 2: 1, the thickness of the formed bottom film is 0.01-0.015cm, and the air permeability of the bottom film is 2680-2690 g/square/24 hours.
The flow guide breathable layer is formed by compounding polyester non-woven fabric, corn fiber non-woven fabric and sponge, a plurality of flow guide breathable structures are uniformly distributed on the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge, the flow guide breathable structures are flow guide holes penetrating through the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge, the diameter of each flow guide hole is 85-92 micrometers, and the density of each flow guide hole is 200-220 pieces/cm2。
The polyester non-woven fabric comprises the following components: the gram weight is 1.5 g/square meter, and the thickness is 0.05 mm;
the corn fiber non-woven fabric comprises the following components: the weight is 8.5 g/square meter, the thickness is 0.25mm, the water content is 2.3-2.8%;
the sponge comprises: the weight per square meter is 2.5 g, the thickness is 0.15mm, and the water content is 4.2-4.5%.
The water absorption layer is formed by mixing wood pulp and high polymers and is coated by dust-free paper, and the thickness of the water absorption layer is 2.5-2.7 mm; the mass ratio of wood pulp to macromolecules is 1: 7.
the wood pulp is as follows: mechanically pulverizing the needle-leaved long fiber wood pulp into fluff pulp with the fiber length of 3.8-4.2 mm;
the polymer is as follows: japanese sumitomo polymer having a specific gravity of 1.70g/cm3The shrinkage is 0.1%, the water absorption is 0.02%, the Rockwell hardness is 91, the tensile strength is 150MPa, the Poisson ratio is 0.49, the thermal conductivity is 0.57W/m/K, and the limiting oxygen index is 48%.
The preparation method of the adult postoperative care pad comprises the following steps:
step 1, preparing surface layer non-woven fabric
(1) Premixing polylactic acid fiber, acrylic fiber, chitosan fiber, carboxymethyl cellulose fiber and enteromorpha fiber according to a formula proportion, and opening and carding to obtain a fiber web, wherein the MD to CD of the fiber web is 3.5-4.1: 1;
(2) exhausting air in the fiber web, and enabling the fiber web to effectively absorb energy of water jet after entering a spunlace area, so as to obtain a wet fiber web finally, wherein the jet time is 40-45 min;
(3) drying at low temperature, namely drying the obtained wet fiber web at low temperature until the water content is 6.5-6.8%, wherein the drying temperature is 58-64 ℃, and obtaining the non-woven fabric;
(4) after finishing; introducing the non-woven fabric prepared in the step into finishing liquid for post-finishing, starting ultrasonic auxiliary treatment, wherein the ultrasonic frequency is 20kHz, the temperature of the finishing liquid is 78-79 ℃, and the soaking time of the non-woven fabric in the finishing liquid is 20-24 min; the finishing liquid comprises the following components in parts by mass: 3-5 parts of evening primrose oil, 15-20 parts of perilla extract, 7-8 parts of citric acid, 7.5-8 parts of triterpenoid saponin, 10-11 parts of glycerol and 25-27 parts of water.
(5) And (4) secondary drying, drying the post-finished non-woven fabric at low temperature again until the water content is 7-7.5%, and rolling for later use after drying.
Step 2, preparing a flow-guiding breathable layer
(1) Sequentially laying the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge, drawing to a hot-pressing roller, and pressing by the hot-pressing roller, wherein the hot-pressing temperature is 87-89 ℃, the hot-pressing strength is 23-24MPa, and the linear speed is 16-18 m/s.
(2) After hot pressing, the material is subjected to laser drilling, and the drilling density is 200-2The diameter of the hole is 85-92 microns, a flow guide hole is formed, and the flow guide hole penetrates through the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge in sequence.
(3) After punching, ultrasonic treatment is adopted, the ultrasonic frequency is 28kHz, the ultrasonic treatment time is 4-5s, and the temperature is 75-78 ℃; and (4) after treatment, obtaining a diversion breathable layer, and rolling for later use.
Step 3, preparing the water absorption core body
Selecting needle-leaved long fiber wood pulp, mechanically crushing to fluff pulp with the fiber length of 3.8-4.2mm, uniformly mixing with high polymers, laying and molding, and coating by using dust-free paper to obtain a water-absorbing core body; the mass ratio of wood pulp to macromolecules is 1: 7.
the polymer is as follows: japanese sumitomo polymer having a specific gravity of 1.70g/cm3Shrinkage of 0.1%, water absorption of 0.02%, Rockwell hardnessThe degree is 91, the tensile strength is 150MPa, the Poisson ratio is 0.49, the thermal conductivity is 0.57W/m/K, and the limiting oxygen index is 48 percent.
Step 4, composite forming
Compacting the water absorption core body obtained in the step 3 by a compression roller to form a water absorption layer, wherein the thickness of the water absorption layer is 2.5-2.7 mm; with the operation of equipment for preparing the nursing pad, the water absorption layer is sequentially compounded with the flow guide breathable layer, the surface layer non-woven fabric and the bottom membrane together, and a finished product is obtained through hot pressing patterns and edge sealing; the finished product comprises the following components from top to bottom in sequence: surface layer non-woven fabrics, water conservancy diversion layer, the layer and the basement membrane of absorbing water, surface layer non-woven fabrics and absorb water between the layer, absorb water between layer and the basement membrane and nursing pad periphery through spraying the heat-sensitive adhesive complex together.
Compared with the prior art, the invention has the beneficial effects that:
1. the postoperative care pad has remarkable antibacterial and bacteriostatic effects, the inhibition rate of the postoperative care pad on staphylococcus aureus is 97.8-98.2%, the inhibition rate of the postoperative care pad on escherichia coli is 99.8-99.9%, and the inhibition rate of the postoperative care pad on candida albicans is 96.5-96.8%;
2. the nursing pad is particularly suitable for clinical nursing after adult operation, the air permeability of the nursing pad is good, the 100 ℃ steam air permeability is 174 g/square meter/hour, and moisture can be quickly discharged.
3. The postoperative care pad has good wear resistance, can resist abrasion for 1580 times of 1500 times, and is not fluffy and damaged.
4. The postoperative care pad disclosed by the invention uses the special flow-guiding breathable layer, is high in water absorption speed through a special preparation process, and can be used for quickly absorbing urine, blood, wound exudate and the like.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention is further illustrated by the following examples:
example 1 adult postoperative care pad and preparation method thereof
The nursing pad comprises surface non-woven fabric, a flow guiding breathable layer, a water absorbing layer and a bottom membrane.
The surface layer non-woven fabric is spunlace non-woven fabric, and is prepared from polylactic acid fiber, acrylic fiber, chitosan fiber, carboxymethyl cellulose fiber and enteromorpha fiber according to the weight ratio of 3: 3: 5: 1: 5, and mixing the components according to the mass ratio.
The basement membrane be waterproof ventilative basement membrane, glue the non-woven fabrics complex by chitosan fiber non-woven fabrics, PE polymer ventilated membrane and PP and form, the thickness ratio that chitosan fiber non-woven fabrics, PE polymer ventilated membrane and PP glued the non-woven fabrics is 1: 2: 1, the thickness of the formed bottom film is 0.01cm, and the air permeability of the bottom film is 2680 g/square/24 hours.
The air-permeable diversion layer is formed by compounding polyester non-woven fabric, corn fiber non-woven fabric and sponge, a plurality of air-permeable diversion structures are uniformly distributed on the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge, the air-permeable diversion structures are air-permeable diversion holes penetrating through the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge, the diameter of each air-permeable diversion hole is 85 micrometers, and the density of each air-diversion hole is 200/cm2。
The polyester non-woven fabric comprises the following components: the gram weight is 1.5 g/square meter, and the thickness is 0.05 mm;
the corn fiber non-woven fabric comprises the following components: the weight is 8.5 g/square meter, the thickness is 0.25mm, the water content is 2.3-2.8%;
the sponge comprises: the weight per square meter is 2.5 g, the thickness is 0.15mm, and the water content is 4.2-4.5%.
The water absorption layer is formed by mixing wood pulp and high polymers and is coated by dust-free paper, and the thickness of the water absorption layer is 2.5-2.7 mm; the mass ratio of wood pulp to macromolecules is 1: 7.
the wood pulp is as follows: mechanically pulverizing the needle-leaved long fiber wood pulp into fluff pulp with the fiber length of 3.8-4.2 mm;
the polymer is as follows: japanese sumitomo polymer having a specific gravity of 1.70g/cm3The shrinkage is 0.1%, the water absorption is 0.02%, the Rockwell hardness is 91, the tensile strength is 150MPa, the Poisson ratio is 0.49, the thermal conductivity is 0.57W/m/K, and the limiting oxygen index is 48%.
The preparation method of the adult postoperative care pad comprises the following steps:
step 1, preparing surface layer non-woven fabric
(1) Premixing polylactic acid fiber, acrylic fiber, chitosan fiber, carboxymethyl cellulose fiber and enteromorpha fiber according to a formula proportion, and opening and carding to obtain a fiber web, wherein the MD to CD of the fiber web is 3.5: 1;
(2) exhausting air in the fiber web, and enabling the fiber web to effectively absorb energy of water jet after entering a spunlace area, so as to obtain a wet fiber web finally, wherein the jet time is 40 min;
(3) drying at low temperature, namely drying the obtained wet fiber web at low temperature until the water content is 6.5 percent, wherein the drying temperature is 58 ℃, and obtaining the non-woven fabric;
(4) after finishing; introducing the non-woven fabric prepared in the step into finishing liquid for post-finishing, starting ultrasonic auxiliary treatment, wherein the ultrasonic frequency is 20kHz, the temperature of the finishing liquid is 78 ℃, and the soaking time of the non-woven fabric in the finishing liquid is 20 min; the finishing liquid comprises the following components in parts by mass: 3 parts of evening primrose oil, 15 parts of perilla extract, 7 parts of citric acid, 7.5 parts of triterpenoid saponin, 10 parts of glycerol and 25 parts of water.
(5) And (5) secondary drying, drying the post-finished non-woven fabric at low temperature again until the water content is 7%, and rolling for later use after drying.
Step 2, preparing a flow-guiding breathable layer
(1) Sequentially laying the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge, drawing to a hot-pressing roller, and pressing by the hot-pressing roller, wherein the hot-pressing temperature is 87 ℃, the hot-pressing strength is 23MPa, and the linear speed is 16-18 m/s.
(2) After hot pressing, laser drilling is carried out, and the drilling density is 200/cm2And the aperture is 85 microns to form a diversion hole, and the diversion hole sequentially penetrates through the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge.
(3) After punching, ultrasonic treatment is adopted, the ultrasonic frequency is 28kHz, the ultrasonic treatment time is 4s, and the temperature is 75 ℃; and (4) after treatment, obtaining a diversion breathable layer, and rolling for later use.
Step 3, preparing the water absorption core body
Selecting needle-leaved long fiber wood pulp, mechanically crushing to fluff pulp with the fiber length of 3.8-4.2mm, uniformly mixing with high polymers, laying and molding, and coating by using dust-free paper to obtain a water-absorbing core body; the mass ratio of wood pulp to macromolecules is 1: 7.
the polymer is as follows: japanese sumitomo polymer having a specific gravity of 1.70g/cm3The shrinkage is 0.1%, the water absorption is 0.02%, the Rockwell hardness is 91, the tensile strength is 150MPa, the Poisson ratio is 0.49, the thermal conductivity is 0.57W/m/K, and the limiting oxygen index is 48%.
Step 4, composite forming
Compacting the water absorption core body obtained in the step 3 by a compression roller to form a water absorption layer, wherein the thickness of the water absorption layer is 2.5 mm; with the operation of equipment for preparing the nursing pad, the water absorption layer is sequentially compounded with the flow guide breathable layer, the surface layer non-woven fabric and the bottom membrane together, and a finished product is obtained through hot pressing patterns and edge sealing; the finished product comprises the following components from top to bottom in sequence: surface layer non-woven fabrics, water conservancy diversion layer, the layer and the basement membrane of absorbing water, surface layer non-woven fabrics and absorb water between the layer, absorb water between layer and the basement membrane and nursing pad periphery through spraying the heat-sensitive adhesive complex together.
Through tests, the postoperative care pad prepared by the embodiment has remarkable antibacterial and bacteriostatic effects, the inhibition rate on staphylococcus aureus is 97.8%, the inhibition rate on escherichia coli is 99.8%, and the inhibition rate on candida albicans is 96.5%; the ventilation capacity of steam at 100 ℃ is 174 g/square meter/hour, and moisture can be discharged quickly; the abrasive performance is good, the friction resistance is 1580 times, and the cloth is not fluffy and damaged; the special flow-guiding breathable layer is used, and the water absorption speed is high through a special preparation process, so that urine, blood, wound exudate and the like can be quickly absorbed.
Embodiment 2 an adult postoperative care pad and a method for manufacturing the same
The nursing pad comprises surface non-woven fabric, a flow guiding breathable layer, a water absorbing layer and a bottom membrane.
The surface layer non-woven fabric is spunlace non-woven fabric, and is prepared from polylactic acid fiber, acrylic fiber, chitosan fiber, carboxymethyl cellulose fiber and enteromorpha fiber according to the weight ratio of 3: 3: 5: 1: 5, and mixing the components according to the mass ratio.
The basement membrane be waterproof ventilative basement membrane, glue the non-woven fabrics complex by chitosan fiber non-woven fabrics, PE polymer ventilated membrane and PP and form, the thickness ratio that chitosan fiber non-woven fabrics, PE polymer ventilated membrane and PP glued the non-woven fabrics is 1: 2: 1, the thickness of the formed bottom film is 0.015cm, and the air permeability of the bottom film is 2690 g/square/24 hours.
The air-permeable diversion layer is formed by compounding polyester non-woven fabric, corn fiber non-woven fabric and sponge, a plurality of air-permeable diversion structures are uniformly distributed on the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge, the air-permeable diversion structures are air-permeable diversion holes penetrating through the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge, the diameter of each air-permeable diversion hole is 92 micrometers, and the density of each air-diversion hole is 220/cm2。
The polyester non-woven fabric comprises the following components: the gram weight is 1.5 g/square meter, and the thickness is 0.05 mm;
the corn fiber non-woven fabric comprises the following components: the weight is 8.5 g/square meter, the thickness is 0.25mm, the water content is 2.3-2.8%;
the sponge comprises: the weight per square meter is 2.5 g, the thickness is 0.15mm, and the water content is 4.2-4.5%.
The water absorption layer is formed by mixing wood pulp and high polymers and is coated by dust-free paper, and the thickness of the water absorption layer is 2.7 mm; the mass ratio of wood pulp to macromolecules is 1: 7.
the wood pulp is as follows: mechanically pulverizing the needle-leaved long fiber wood pulp into fluff pulp with the fiber length of 3.8-4.2 mm;
the polymer is as follows: japanese sumitomo polymer having a specific gravity of 1.70g/cm3The shrinkage is 0.1%, the water absorption is 0.02%, the Rockwell hardness is 91, the tensile strength is 150MPa, the Poisson ratio is 0.49, the thermal conductivity is 0.57W/m/K, and the limiting oxygen index is 48%.
The preparation method of the adult postoperative care pad comprises the following steps:
step 1, preparing surface layer non-woven fabric
(1) Premixing polylactic acid fiber, acrylic fiber, chitosan fiber, carboxymethyl cellulose fiber and enteromorpha fiber according to a formula proportion, and opening and carding to obtain a fiber web, wherein the MD to CD of the fiber web is 4.1: 1;
(2) exhausting air in the fiber web, and enabling the fiber web to effectively absorb energy of water jet after entering a spunlace area, so as to obtain a wet fiber web finally, wherein the jet time is 45 min;
(3) drying at low temperature, namely drying the obtained wet fiber web at low temperature until the water content is 6.8 percent, wherein the drying temperature is 64 ℃, and obtaining the non-woven fabric;
(4) after finishing; introducing the non-woven fabric prepared in the step into finishing liquid for post-finishing, starting ultrasonic auxiliary treatment, wherein the ultrasonic frequency is 20kHz, the temperature of the finishing liquid is 79 ℃, and the soaking time of the non-woven fabric in the finishing liquid is 24 min; the finishing liquid comprises the following components in parts by mass: 5 parts of evening primrose oil, 20 parts of perilla extract, 8 parts of citric acid, 8 parts of triterpenoid saponin, 11 parts of glycerol and 27 parts of water.
(5) And (5) secondary drying, drying the post-finished non-woven fabric at low temperature again until the water content is 7.5%, and rolling for later use after drying.
Step 2, preparing a flow-guiding breathable layer
(1) The polyester non-woven fabric, the corn fiber non-woven fabric and the sponge are sequentially paved, pulled to a hot pressing roller, and pressed by the hot pressing roller, wherein the hot pressing temperature is 89 ℃, the hot pressing strength is 24MPa, and the linear speed is 18 m/s.
(2) After hot pressing, the mixture is subjected to laser drilling, and the drilling density is 220/cm2And the aperture is 92 microns to form a flow guide hole, and the flow guide hole sequentially penetrates through the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge.
(3) After punching, ultrasonic treatment is adopted, the ultrasonic frequency is 28kHz, the ultrasonic treatment time is 5s, and the temperature is 78 ℃; and (4) after treatment, obtaining a diversion breathable layer, and rolling for later use.
Step 3, preparing the water absorption core body
Selecting needle-leaved long fiber wood pulp, mechanically crushing to fluff pulp with the fiber length of 3.8-4.2mm, uniformly mixing with high polymers, laying and molding, and coating by using dust-free paper to obtain a water-absorbing core body; the mass ratio of wood pulp to macromolecules is 1: 7.
the polymer is as follows: japanese sumitomo polymer having a specific gravity of 1.70g/cm3The shrinkage is 0.1%, the water absorption is 0.02%, the Rockwell hardness is 91, the tensile strength is 150MPa, the Poisson ratio is 0.49, the thermal conductivity is 0.57W/m/K, and the limiting oxygen index is 48%.
Step 4, composite forming
Compacting the water-absorbing core body obtained in the step 3 by a compression roller to form a water-absorbing layer, wherein the thickness of the water layer is 2.6 mm; with the operation of equipment for preparing the nursing pad, the water absorption layer is sequentially compounded with the flow guide breathable layer, the surface layer non-woven fabric and the bottom membrane together, and a finished product is obtained through hot pressing patterns and edge sealing; the finished product comprises the following components from top to bottom in sequence: surface layer non-woven fabrics, water conservancy diversion layer, the layer and the basement membrane of absorbing water, surface layer non-woven fabrics and absorb water between the layer, absorb water between layer and the basement membrane and nursing pad periphery through spraying the heat-sensitive adhesive complex together.
Through tests, the postoperative care pad prepared by the embodiment has remarkable antibacterial and bacteriostatic effects, the inhibition rate on staphylococcus aureus is 98.2%, the inhibition rate on escherichia coli is 99.9%, and the inhibition rate on candida albicans is 96.8%; the nursing pad has good air permeability, and the air permeability of steam at 100 ℃ is 174 g/square meter/hour, so that moisture can be discharged quickly; can resist friction for 1580 times, and has no fluffiness and no damage; the special flow-guiding breathable layer is used, and the water absorption speed is high through a special preparation process, so that urine, blood, wound exudate and the like can be quickly absorbed.
In the above embodiments, the best mode of the present invention has been described, and it is apparent that many changes can be made under the inventive concept of the present invention. Any changes made under the inventive concept of the present invention shall fall within the protective scope of the present invention.

Claims (1)

1. An adult postoperative care pad which characterized in that: the nursing pad comprises surface layer non-woven fabrics; the surface layer non-woven fabric is spunlace non-woven fabric, and is prepared from polylactic acid fiber, acrylic fiber, chitosan fiber, carboxymethyl cellulose fiber and enteromorpha fiber according to the weight ratio of 3: 3: 5: 1: 5 in a mass ratio;
the nursing pad also comprises a flow guiding and ventilating layer; the flow guide breathable layer is formed by compounding polyester non-woven fabric, corn fiber non-woven fabric and sponge, a plurality of flow guide breathable structures are uniformly distributed on the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge, the flow guide breathable structures are flow guide holes penetrating through the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge, the diameter of each flow guide hole is 85-92 micrometers, and each flow guide hole is formed by combining polyester non-woven fabric, corn fiber non-The density of (A) is 200-2；
The nursing pad also comprises a bottom film; the basement membrane be waterproof ventilative basement membrane, glue the non-woven fabrics complex by chitosan fiber non-woven fabrics, PE polymer ventilated membrane and PP and form, the thickness ratio that chitosan fiber non-woven fabrics, PE polymer ventilated membrane and PP glued the non-woven fabrics is 1: 2: 1, the air permeability of the basement membrane is 2680-2690 g/square/24 hours;
the nursing pad also comprises a water absorption layer; the water absorption layer is formed by mixing wood pulp and high polymers and is coated by dust-free paper, and the thickness of the water absorption layer is 2.5-2.7 mm; the mass ratio of wood pulp to macromolecules is 1: 7;
the preparation method of the adult postoperative care pad comprises the steps of preparing surface layer non-woven fabric, preparing a flow guiding breathable layer and preparing a water absorption core body;
the preparation of the surface layer non-woven fabric: (1) premixing polylactic acid fiber, acrylic fiber, chitosan fiber, carboxymethyl cellulose fiber and enteromorpha fiber according to a formula proportion, and opening and carding to obtain a fiber web, wherein the MD to CD of the fiber web is 3.5-4.1: 1; (2) exhausting air in the fiber web, and enabling the fiber web to effectively absorb energy of water jet after entering a spunlace area, so as to obtain a wet fiber web finally, wherein the jet time is 40-45 min; (3) drying at low temperature, namely drying the obtained wet fiber web at low temperature until the water content is 6.5-6.8%, wherein the drying temperature is 58-64 ℃, and obtaining the non-woven fabric; (4) after finishing; introducing the non-woven fabric prepared in the step into finishing liquid for post-finishing, starting ultrasonic auxiliary treatment, wherein the ultrasonic frequency is 20kHz, the temperature of the finishing liquid is 78-79 ℃, and the soaking time of the non-woven fabric in the finishing liquid is 20-24 min; the finishing liquid comprises the following components in parts by mass: 3-5 parts of evening primrose oil, 15-20 parts of perilla extract, 7-8 parts of citric acid, 7.5-8 parts of triterpenoid saponin, 10-11 parts of glycerol and 25-27 parts of water; (5) secondary drying, drying the post-finished non-woven fabric at low temperature again until the water content is 7-7.5%, and rolling for later use after drying;
the preparation of the flow-guiding breathable layer: (1) sequentially laying polyester non-woven fabric, corn fiber non-woven fabric and sponge, drawing to a hot-pressing roller, pressing by the hot-pressing roller, and heating to a hot-pressing temperatureThe hot pressing strength is 23-24MPa at 87-89 ℃, and the linear velocity is 16-18 m/s; (2) after hot pressing, the material is subjected to laser drilling, and the drilling density is 200-2The aperture is 85-92 microns to form a diversion hole, and the diversion hole sequentially penetrates through the polyester non-woven fabric, the corn fiber non-woven fabric and the sponge; (3) after punching, ultrasonic treatment is adopted, the ultrasonic frequency is 28kHz, the ultrasonic treatment time is 4-5s, and the temperature is 75-78 ℃; after treatment, obtaining a diversion breathable layer;
the preparation of the water absorption core body comprises the following steps: selecting needle-leaved long fiber wood pulp, mechanically crushing to fluff pulp with the fiber length of 3.8-4.2mm, uniformly mixing with high polymers, laying and molding, and coating by using dust-free paper to obtain a water-absorbing core body; the mass ratio of wood pulp to macromolecules is 1: 7.
CN201810221524.1A 2018-03-17 2018-03-17 Adult postoperative care pad and preparation method thereof Expired - Fee Related CN108819412B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810221524.1A CN108819412B (en) 2018-03-17 2018-03-17 Adult postoperative care pad and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810221524.1A CN108819412B (en) 2018-03-17 2018-03-17 Adult postoperative care pad and preparation method thereof

Publications (2)

Publication Number Publication Date
CN108819412A CN108819412A (en) 2018-11-16
CN108819412B true CN108819412B (en) 2020-07-24

Family

ID=64155074

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810221524.1A Expired - Fee Related CN108819412B (en) 2018-03-17 2018-03-17 Adult postoperative care pad and preparation method thereof

Country Status (1)

Country Link
CN (1) CN108819412B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116602820B (en) * 2023-05-23 2023-10-13 江苏宝姿实业有限公司 Soft and breathable adult nursing pad and preparation process thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204274802U (en) * 2014-09-10 2015-04-22 杭州诺邦无纺股份有限公司 Baby paper diaper ventilating structure
CN205019267U (en) * 2015-08-28 2016-02-10 山东美莲达生物科技有限公司 Antibiotic antibacterial sanitary towel that contains chitosan fiber
CN205885634U (en) * 2016-05-11 2017-01-18 稳健医疗用品股份有限公司 Even absorptive dressing that absorbs water that surpasses

Also Published As

Publication number Publication date
CN108819412A (en) 2018-11-16

Similar Documents

Publication Publication Date Title
CN104096258B (en) Degradable poly lactic acid sanitary towel of a kind of lateral leakage protection and preparation method thereof
CN107519522B (en) Infant paper diaper and preparation method thereof
CN1658911A (en) Absorbent article comprising a skin care composition
CN105963081A (en) Baby paper diaper and manufacturing method thereof
CN103153251A (en) Article with health-benefit agent delivery system
CN110314042A (en) A kind of unidirectional high moisture-inhibiting paper diaper and preparation method thereof
CN107432787A (en) A kind of biological antibiotic hydroscopic sanitary material and preparation method
Ajmeri et al. Nonwoven personal hygiene materials and products
CN113693831A (en) Quick-absorption dry-comfortable absorption article and manufacturing method thereof
CN111888094A (en) Absorption core, disposable absorption product and preparation process thereof
CN102154785A (en) Antibacterial hygienic material made from bamboo proto fibers and manufacturing process and application thereof
CN113558871A (en) Adult paper diaper
CN206641998U (en) A kind of biological antibiotic hydroscopic sanitary material
CN110946712B (en) Paper diaper with functions of softening buttocks and building fat
CN108819412B (en) Adult postoperative care pad and preparation method thereof
CN108466465B (en) Clinical nursing pad and preparation method thereof
CN112921499B (en) Regenerated fiber non-woven fabric and application thereof in disposable hygienic product
Malarvizhi Development of herbal finished baby diapers with bamboo fiber
CN115337148A (en) Absorption core body and sanitary product
CN104873333A (en) Biodegradable disposable nursing product and production method thereof
CN113017989A (en) Preparation method of ultrathin breathable sanitary towel
CN110680618A (en) Long-acting antibacterial baby diaper
US6759353B2 (en) Absorbing article
CN216168307U (en) Neonate diaper
KR101749723B1 (en) Preparation method of wet-strength enhanced absorbent core

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200724