CN108310445A - A kind of medical dressing and its manufacturing method - Google Patents
A kind of medical dressing and its manufacturing method Download PDFInfo
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- CN108310445A CN108310445A CN201810101329.5A CN201810101329A CN108310445A CN 108310445 A CN108310445 A CN 108310445A CN 201810101329 A CN201810101329 A CN 201810101329A CN 108310445 A CN108310445 A CN 108310445A
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- chitin fiber
- base
- medical dressing
- fiber net
- nonwoven layer
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 136
- 229920002101 Chitin Polymers 0.000 claims abstract description 118
- 238000000034 method Methods 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 15
- 239000004744 fabric Substances 0.000 claims description 24
- 239000004745 nonwoven fabric Substances 0.000 claims description 20
- 229920003043 Cellulose fiber Polymers 0.000 claims description 5
- 241000381602 Vachellia nebrownii Species 0.000 claims 1
- 208000027418 Wounds and injury Diseases 0.000 abstract description 36
- 206010052428 Wound Diseases 0.000 abstract description 34
- 239000007788 liquid Substances 0.000 abstract description 18
- 230000029663 wound healing Effects 0.000 abstract description 7
- 206010011409 Cross infection Diseases 0.000 abstract description 4
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 239000002585 base Substances 0.000 description 43
- 238000002156 mixing Methods 0.000 description 17
- 150000001875 compounds Chemical class 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 241000894006 Bacteria Species 0.000 description 11
- 238000001514 detection method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 230000003115 biocidal effect Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 230000001427 coherent effect Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006855 networking Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 241000238557 Decapoda Species 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000845 anti-microbial effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000002504 physiological saline solution Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 229920000433 Lyocell Polymers 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 206010072170 Skin wound Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000001266 bandaging Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229960002668 sodium chloride Drugs 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 238000002166 wet spinning Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/28—Polysaccharides or their derivatives
-
- 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
- A61F13/02—Adhesive plasters or dressings
- A61F13/0203—Adhesive plasters or dressings having a fluid handling member
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/425—Porous materials, e.g. foams or sponges
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Materials Engineering (AREA)
- Epidemiology (AREA)
- Hematology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Dispersion Chemistry (AREA)
- Materials For Medical Uses (AREA)
Abstract
The invention discloses a kind of medical dressing and its manufacturing methods, the medical dressing includes chitin fiber net and base's nonwoven layer, by the way that chitin fiber is formed chitin fiber net after shredding, combing, cross lapping, the weight ratio that wherein chitin fiber accounts for chitin fiber net is >=50%, and the grammes per square metre of chitin fiber net is 2 30g/m2, it is laid on an at least surface for base's nonwoven layer；Then process processing is pierced by carrying out spun lacing or needle, chitin fiber is interted and is wrapped in the surface of base's nonwoven layer, to which medical dressing be made, since there is the chitin fiber for being weight ratio for >=50% good biocompatibility with the surface of contact skin, be conducive to quickly absorb the liquid of wound exudation, keep wound clean, be conducive to wound healing, and nonwoven layer has then effectively separated extraneous graininess pollutant, external microbe is reduced by medical dressing, to cause the risk of cross-infection.
Description
Technical field
The present invention relates to a kind of medical non-woven fabrics field, especially a kind of superficial layer has the Medical coating of good biocompatibility
Material and its manufacturing method.
Background technology
Medical dressing is common medical supplies as protecting wound surface covering material, in traditional medical procedure, for
General skin wound will carry out bandaging method for treating, wound is avoided to be infected, or injured again, to promote wound that can use up
Fast healing.
Chitin fiber is pure natural animal fiber now, by it with good biocompatibility, adhesiveness, nothing
The advantages that challeng, does not reject at non-sensitization, and good, safe and non-toxic, the antibacterial rush of ventilative and hygroscopicity energy is cured, extensive use
In medical domain, it is particularly applied in medical dressing.After shrimp, crab shell being chemically treated using advanced technologies and by acid, alkali,
I.e. from shrimp, crab shell extraction chitin, then through deacetylated technology then become chitin first order derivatives, finally by wet spinning
Technique and chitin fiber is made.But chitin fiber is as a kind of tencel, and since itself is very crisp, spinnability is poor, by force
Spend poor, obvolvent force difference, not easy to be processed, cost is higher, therefore is fine with cotton, viscose glue etc. mostly in the application of medical dressing field
Hybrid process is tieed up, to improve its spinnability.Application No. is the patent of invention of 201410370820.X provide a kind of chitin without
Woven fabric comprising host material, the host material contain 5~90 parts by weight chitin fiber and 10~95 parts by weight its
Non-woven fabrics of chitin is made by spun lacing, needle thorn or heat pressing process after mixing in its fiber.But blending product mostly uses greatly spun lacing
Mode is molded, and product strength is small, is easily deformed；And product permeability is too high, is easy that the surface of a wound is made to be dehydrated, and is unfavorable for wound and is cured
It closes, external environment microorganism is easy to pass through, and to graininess pollutant without barrier, causes the chance of cross-infection higher.
Invention content
It is an object of the invention to overcome the defect of existing medical dressing, it is good, strong now to provide a kind of surface biocompatible
Degree is good and can effectively prevent the medical dressing and its manufacturing method of cross-infection.
To achieve the above object, solution of the invention is：
A kind of medical dressing, the medical dressing include chitin fiber net and base's nonwoven layer, at least base's non-woven fabrics
There is chitin fiber net, the chitin fiber in the chitin fiber net is interspersed and is wrapped in base's non-woven fabrics in layer surface
On layer, wherein：Chitin fiber accounts for weight ratio >=50% of chitin fiber net, and the grammes per square metre of chitin fiber net is 2-30g/
m2。
The grammes per square metre of chitin fiber net is 5-20g/m2。
The surface of the chitin fiber net has open-celled structure.
The surface of the chitin fiber net has bulge-structure.
Two surfaces up and down of base's nonwoven layer all have chitin fiber net.
Base's nonwoven layer is spun-bonded non-woven fabrics, hot-wind nonwoven cloth or fabric hot rolled nonwoven fabrics, base's nonwoven layer
Grammes per square metre be 5-50g/ m2。
A kind of manufacturing method step of medical dressing includes：Chitin fiber net grammes per square metre is 2-30g/m2, chitin will be accounted for
The chitin fiber that the weight ratio of web is >=50% forms chitin fiber net after shredding, combing, cross lapping,
It is laid on an at least surface for base's nonwoven layer；Then process processing is pierced by carrying out spun lacing or needle, by chitin fiber
Surface that is interspersed and being wrapped in base's nonwoven layer.
The chitin fiber net pierces process after surface forms open-celled structure through spun lacing or needle and is laid in base's non-woven fabrics
Layer surface, then process processing is pierced by carrying out spun lacing or needle, chitin fiber is interted and is wrapped in the table of base's nonwoven layer
Face.
The chitin fiber net is laid in base's nonwoven layer surface, then pierce by carrying out spun lacing or needle after jacquard weave
Process processing, interts and is wrapped in the surface of base's nonwoven layer by chitin fiber.
The chitin fiber net is laid in base's nonwoven layer upper and lower surface.
After adopting the above scheme, the medicinal dressing obtained by manufacturing method through the invention is due to as contact skin
There is chitin fiber net, the chitin fiber in the chitin fiber net is interspersed and is wrapped on base's nonwoven layer surface
In base's nonwoven layer, and the good biocompatibility of chitin fiber is protected to be conducive to quickly absorb the liquid of wound exudation
Wound clean is held, wound healing is conducive to, and base's nonwoven layer has then effectively separated extraneous graininess pollutant, reduces outer
Boundary microorganism is by medical dressing, to cause the risk of cross-infection, meanwhile, base's nonwoven layer is ensureing medical dressing
Under the premise of intensity, the dosage of chitin fiber is greatly reduced, reduces the cost of medical dressing.
Description of the drawings
Fig. 1 is the sectional view of the medical dressing of the embodiment of the present invention 1；
Fig. 2 is the vertical view of the medical dressing of the embodiment of the present invention 2；
Fig. 3 is the sectional view of the medical dressing of the embodiment of the present invention 2；
Fig. 4 is the vertical view of the medical dressing of the embodiment of the present invention 3；
Fig. 5 is the sectional view of the medical dressing of the embodiment of the present invention 3；
Fig. 6 is the sectional view of the medical dressing of the embodiment of the present invention 4.
Specific implementation mode
In order to further explain the technical solution of the present invention, being explained in detail the present invention below by specific embodiment
It states.
Embodiment 1
As shown in Figure 1, chitin fiber and other fibers are fed by drawing-in device respectively, drawing-in device carries out raw material thick
After shredding, it is 50% to account for chitin fiber net weight ratio according to chitin fiber, and chitin fiber net grammes per square metre is 15g/m2, throw
Initial stage mixing is carried out on Conveyance belt, then chitin fiber and other fibrous raw materials are sent by Conveyance belt to smart shredding
Into more storehouse blending boxs, more storehouse blending boxs make fiber obtain uniform mixing using typical " horizontal paving directly takes " method.This is whole
Covering device ensures effective proportioning of fiber, and the fiber after being then blended enters networking system by more storehouse blending boxs, is opened through combing
Song Hou, carries out cross lapping and drawing-off forms chitin fiber net B1；Chitin fiber net B1 is laid in base's spun-bonded non-woven fabrics
On the surfaces layer C1, wherein the grammes per square metre of base's spun-bonded non-woven fabrics is 15g/m2；Then process processing is pierced by spun lacing or needle, in multiply
Fine high-pressure water jet sprays compound chitin fiber net B1 and base spun-bonded non-woven fabrics layer C1, and water jet passes through compound first
It after shell cellulose fiber net B1 and base spun-bonded non-woven fabrics layer C1, is rebounded by holding lace curtaining, interts compound chitin fiber again
Net B1 and base spun-bonded non-woven fabrics layer C1, as a result, in chitin fiber net B1 fiber different directions high-speed water jet intert
Under hydraulic action, displacement, interspersed, entanglement and obvolvent are generated, to intert and be wrapped in base's spunbond nonwoven by chitin fiber
The surface of layer of cloth C1 forms the medical dressing A1 with chitin fiber on the surface of contact skin.
The main function of usual medical dressing is：1）Control the diffusate of wound; 2）Avoid or control the infection of wound;
3）The stink that removal or control wound generate; 4）Mitigate pain;5）Ensure the comfort of patient as best one can; 6）Hidden wound with
Protection needs beauty by hurting sb.'s feelings; 7）It soon cicatrizes a wound and the wound surface after healing is made to have good appearance
Image.
From in several requirements above as can be seen, medical dressing mainly be used to absorb wound on diffusate, control
The breeding of bacterium and wound is protected as much as possible, patient is made normally to work and live during wound healing.Therefore,
The main performance index detection method of medical dressing is as follows：
The hygroscopic test method of medical dressing, it is specific as follows：
Test solution：Physiological saline：0.9% sodium-chloride water solution
Test method：Medical dressing is cut into 5cm × 5cm sizes first, it is small to be then placed in 105 DEG C of baking ovens dry 2
Up to weight, dry weight (W, the unit of medical dressing are at this moment measured:g).Medical dressing is placed on later the training of a diameter of 90cm
The physiological saline that 50ml is added in ware is supported, after 30 min are placed at 37 DEG C, one jiao of medical dressing is clamped in the air with tweezers
After hanging 30s, weight in wet base (W1, the unit of medical dressing are measured:g).The hygroscopicity of Unit Weight dressing is (W1-W)/W (units:
), g/g 100cm2The hygroscopicity of area is 4 (W1-W) (units:g).
The test method that liquid is distributed in fiber between fiber, it is specific as follows：
When due to absorbing the diffusate on wound when dressing, a part of liquid is absorbed in the sky of the capillary between fiber and fiber
In, and another part liquid is preferentially absorbed into the macromolecular structure of fibrous inside.If the liquid of front portion and the knot of dressing
It is poor to close, and structure of the liquid readily along fabric will be made to spread, the moistening of the skin of wound perimeter is caused even to rot.Latter portion
The liquid divided can be retained in fibrous inside, play the role of as wound moisturizing.And absorb liquid between the fibers due to
It is to be attracted in dressing in a manner of physical action, it is possible to by the liquid of front portion and be applied with Centrifugal dehydration method
Material separation.
Dressing (weight W1) after moisture absorption after being tested according to hygroscopic test method is placed on a centrifuge tube
In, knitted fabric that the filling of the lower half of centrifuge tube is folded is so as to for keeping the moisture for centrifuging and sloughing from fiber here.Centrifuge tube
After being dehydrated 15min under the speed of 1200r/min, the weight of medical dressing after dehydration is measured（W2）, this weight W2 is fine
The summation of the dry weight of dimension itself and the liquid weight for being absorbed into fibrous inside.
W1-W2 are the liquid absorbed between the fibers, and W2-W is the liquid for being absorbed into fibrous inside.And pass through
(W1- W2)/W and (W2-W)/W calculates the liquid that every gram of (dry weight) dressing can be absorbed between fibrous inside and fiber
The scale of construction.
Anti-microbial property test
Bacteria suspension is made in the Escherichia coli kind to have spread cultivation first, control bacterium number is surveyed in 1 × 108cfu/ml or so
Try viable count Ma.Then the step of simulation hygroscopicity test, is placed on the medical dressing of one piece of 5 cm of cm × 5 and compares Medical coating
Material weighs in 40 times of bacteria suspension, after placing 30 min at 37 DEG C in the culture dish of a diameter of 90cm, is clamped with tweezers medical
After one jiao of dressing hangs 30s in the air, with microorganism testing method measure solution in viable count Mb, bacteriostasis rate Y=（Ma-Mb）/
Ma×100%。
Existing medical dressing and medical dressing A1 are subjected to the coherent detections such as hygroscopicity, antibiotic property respectively, detection data is such as
Under：
Chitin fiber net B1 is in contact with wound and skin when use, due to chitin fiber good biocompatibility, and has
There are moisture absorption and antibacterial action, can effectively absorb the liquid of wound exudation so that wound keeps cleaning, is conducive to wound healing.
And while being also to lean on multiple filtration ability since the resistance bacterium of the medical dressing of gas permeability is controlled by the size in aperture
Achieve the effect that hinder bacterium, therefore several fine fibres are irregular vertical by the nothing of chitin fiber net B1 by base spun-bonded non-woven fabrics layer C1
Traversed by is wrong, forms the aperture that effective aperture is less than 50um, to reaching resistance bacterium, ventilative performance, effective barrier microorganism and
Dust penetrates, it is therefore prevented that external microbe invades wound, and ensures that the superficial layer of medical dressing is wrapped by chitin fiber
The dosage covered and on the basis of mechanical strength, reduce chitin fiber reduces the cost of medical dressing.
Embodiment 2
As shown in Figures 2 and 3, chitin fiber and other fibers are fed by drawing-in device respectively, drawing-in device is to raw material
After carrying out thick shredding, the weight ratio that chitin fiber net is accounted for according to chitin fiber is 70%, and chitin fiber net grammes per square metre is
20g/m2, cast to progress initial stage mixing on Conveyance belt, then chitin fiber and other fibrous raw materials are sent by Conveyance belt
Enter more storehouse blending boxs after to smart shredding, more storehouse blending boxs make fiber obtain uniform using typical " horizontal paving directly takes " method
Mixing.This package unit ensures effective proportioning of fiber, and the fiber after being then blended enters networking system by more storehouse blending boxs
System carries out cross lapping and drawing-off after combing shredding, pierces process through spun lacing or needle, surface forms the crust of open-celled structure D2
Cellulose fiber net B2；Chitin fiber net B2 is laid on the surfaces base hot-wind nonwoven cloth layer C2, wherein base's hot-wind nonwoven cloth
Grammes per square metre is 24g/m2；Then process processing is pierced by spun lacing or needle, sprays compound chitin in the fine high-pressure water jet of multiply
Web B2 and base hot-wind nonwoven cloth layer C2, water jet pass through compound chitin fiber net B2 and base's hot-wind nonwoven cloth layer
It after C2, is rebounded by holding lace curtaining, interts compound chitin fiber net B2 and base hot-wind nonwoven cloth layer C2 again, as a result,
Fiber is under the hydraulic action that different directions high-speed water jet interts in chitin fiber net B2, generate displacement, it is interspersed, tangle and
Obvolvent, the surface so that chitin fiber is interted and is wrapped in base hot-wind nonwoven cloth layer C2 are formed on the surface of contact skin
Medical dressing A2 with chitin fiber.
Existing medical dressing and medical dressing A2 are subjected to the coherent detections such as hygroscopicity, antibiotic property respectively, detection data is such as
Under：
Due to contacting the chitin fiber net B2 good biocompatibilities of skin, and there is open-celled structure D2, can effectively absorb
The liquid of wound exudation so that wound keeps cleaning, is conducive to wound healing, and open-celled structure D2 can be effectively reduced and be hindered
The contact area of mouth, it is therefore prevented that medical dressing and wound adhesion, secondary injury caused by being torn to wound when reducing dressing.
Embodiment 3
As shown in Figures 4 and 5, chitin fiber and other fibers are fed by drawing-in device respectively, drawing-in device is to raw material
After carrying out thick shredding, the weight ratio that chitin fiber net is accounted for according to chitin fiber is 80%, and chitin fiber net grammes per square metre is
20g/m2, cast to progress initial stage mixing on Conveyance belt, then chitin fiber and other fibrous raw materials are sent by Conveyance belt
Enter more storehouse blending boxs after to smart shredding, more storehouse blending boxs make fiber obtain uniform using typical " horizontal paving directly takes " method
Mixing.This package unit ensures effective proportioning of fiber, and the fiber after being then blended enters networking system by more storehouse blending boxs
System, into carding machine, forms chitin fiber net B3 of the surface with bulge-structure E3 after further shredding after jacquard weave；
Chitin fiber net B3 is laid on the surfaces base hot-wind nonwoven cloth layer C3, and wherein the grammes per square metre of base's hot-wind nonwoven cloth is 40g/
m2；Then process processing is pierced by spun lacing or needle, the fine high-pressure water jet of multiply spray compound chitin fiber net B3 and
Base hot-wind nonwoven cloth layer C3 is commissioned after water jet passes through compound chitin fiber net B3 and base hot-wind nonwoven cloth layer C3
The rebound of lace curtaining is held, interts compound chitin fiber net B3 and base hot-wind nonwoven cloth layer C3 again, as a result, chitin fiber
It nets fiber in B3 and generates displacement, interspersed, entanglement and obvolvent under the hydraulic action that different directions high-speed water jet interts, to
Chitin fiber is interted and is wrapped in the surface of base hot-wind nonwoven cloth layer C3, being formed has crust on the surface of contact skin
The medical dressing A3 of cellulose fiber.
Existing medical dressing and medical dressing A3 are subjected to the coherent detections such as hygroscopicity, antibiotic property respectively, detection data is such as
Under：
Due to contacting the chitin fiber net B3 good biocompatibilities of skin, and there is bulge-structure E3, can effectively absorb
The liquid of wound exudation so that wound keeps cleaning, is conducive to wound healing, and projecting apertures structure E3 can be effectively reduced and be hindered
The contact area of mouth, it is therefore prevented that medical dressing and wound adhesion, secondary injury caused by being torn to wound when reducing dressing.
Embodiment 4
As shown in fig. 6, chitin fiber net grammes per square metre is 8g/m2, the crust that the weight ratio of chitin fiber net is 100% will be accounted for
Cellulose fiber is respectively formed two layers chitin fiber net B4 and F4 after shredding, combing, cross lapping, be laid in base's hot rolling without
In the upper and lower surface of woven fabric layer C4, wherein the grammes per square metre of base's fabric hot rolled nonwoven fabrics is 20g/m2；Then process is pierced by spun lacing or needle
Processing, sprays compound chitin fiber net B4, F4 and base fabric hot rolled nonwoven fabrics layer C4, water-jet in the fine high-pressure water jet of multiply
Stream is rebounded by holding lace curtaining, is interted again after compound chitin fiber net B4, F4 and base fabric hot rolled nonwoven fabrics layer C4
Compound chitin fiber net B4, F4 and base fabric hot rolled nonwoven fabrics layer C4, as a result, in chitin fiber net B4 and F4 fiber not
Under the interspersed hydraulic action of equidirectional high-speed water jet, displacement, interspersed, entanglement and obvolvent are generated, to wear chitin fiber
Two surfaces of base's fabric hot rolled nonwoven fabrics layer are inserted and be wrapped in, medical dressing A4 is formed.
Existing medical dressing and medical dressing A4 are subjected to the coherent detections such as hygroscopicity, antibiotic property respectively, detection data is such as
Under：
Due to contacting the chitin fiber net B4 good biocompatibilities of skin, and there is moisture absorption and antibacterial action, it can be effective
Absorb the liquid of wound exudation so that wound keeps cleaning, is conducive to wound healing.Superficies chitin fiber net simultaneously
F4, skin-friendly is preferable, prevents adjacent stimulation skin, causes allergy, simultaneously because amino absorption positively charged in chitin fiber
Bacterium makes bacteria cell wall memebrane protein be denaturalized, and hinders bacterial growth；Meanwhile chitin glycosidic bonds, prevent substance inside and outside bacterium
Transmission, keep bacterium interior tissue exposed and dead, thus chitin fiber have splendid anti-microbial property.
Claims (10)
1. a kind of medical dressing, it is characterised in that：The medical dressing includes chitin fiber net and base's nonwoven layer, at least
There is chitin fiber net, the chitin fiber in the chitin fiber net interts and looping on one base's nonwoven layer surface
In in base's nonwoven layer, wherein：Chitin fiber accounts for weight ratio >=50% of chitin fiber net, chitin fiber net
Grammes per square metre is 2-30g/m2。
2. a kind of medical dressing as described in claim 1, it is characterised in that：The grammes per square metre of chitin fiber net is 5-20g/m2。
3. a kind of medical dressing as described in claim 1, it is characterised in that：The surface of the chitin fiber net has trepanning
Structure.
4. a kind of medical dressing as described in claim 1, it is characterised in that：The surface of the chitin fiber net has protrusion
Structure.
5. a kind of medical dressing as described in claim 1, it is characterised in that：Two surfaces up and down of base's nonwoven layer are equal
With chitin fiber net.
6. a kind of medical dressing as described in claim 1, it is characterised in that：Base's nonwoven layer be spun-bonded non-woven fabrics,
The grammes per square metre of hot-wind nonwoven cloth or fabric hot rolled nonwoven fabrics, base's nonwoven layer is 5-50g/m2。
7. a kind of manufacturing method of medical dressing, which is characterized in that step includes：Chitin fiber net grammes per square metre is 2-30g/m2, will
The chitin fiber that the weight ratio for accounting for chitin fiber net is >=50% forms chitin after shredding, combing, cross lapping
Web is laid on an at least surface for base's nonwoven layer；Then process processing is pierced by carrying out spun lacing or needle, by crust
Cellulose fiber is interspersed and is wrapped in the surface of base's nonwoven layer.
8. a kind of manufacturing method of medical dressing as claimed in claim 7, it is characterised in that：The chitin fiber net is through water
Thorn or needle pierce process, after surface forms open-celled structure, are laid in base's nonwoven layer surface, then pierce work by carrying out spun lacing or needle
Sequence processing, interts and is wrapped in the surface of base's nonwoven layer by chitin fiber.
9. a kind of manufacturing method of medical dressing as claimed in claim 7, it is characterised in that：The chitin fiber net is through carrying
Hua Hou is laid in base's nonwoven layer surface, then pierces process processing by carrying out spun lacing or needle, and chitin fiber is interted and wrapped
It twines in the surface of base's nonwoven layer.
10. a kind of manufacturing method of medical dressing as claimed in claim 7, it is characterised in that：The chitin fiber net is flat
It is laid in base's nonwoven layer upper and lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101329.5A CN108310445A (en) | 2018-02-01 | 2018-02-01 | A kind of medical dressing and its manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101329.5A CN108310445A (en) | 2018-02-01 | 2018-02-01 | A kind of medical dressing and its manufacturing method |
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|---|---|
| CN108310445A true CN108310445A (en) | 2018-07-24 |
Family
ID=62888951
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810101329.5A Pending CN108310445A (en) | 2018-02-01 | 2018-02-01 | A kind of medical dressing and its manufacturing method |
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| CN112111806A (en) * | 2020-08-21 | 2020-12-22 | 上海题桥纺织染纱有限公司 | Medical fiber and preparation method and application thereof |
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Application publication date: 20180724 |