CN109234911A - A kind of preparation method of biodegradable medical dressing - Google Patents
A kind of preparation method of biodegradable medical dressing Download PDFInfo
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- CN109234911A CN109234911A CN201811142317.3A CN201811142317A CN109234911A CN 109234911 A CN109234911 A CN 109234911A CN 201811142317 A CN201811142317 A CN 201811142317A CN 109234911 A CN109234911 A CN 109234911A
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- catkin
- viscose glue
- woven cloth
- medical dressing
- machine
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
- D04H1/4258—Regenerated cellulose series
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
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- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Nonwoven Fabrics (AREA)
- Materials For Medical Uses (AREA)
Abstract
This application discloses a kind of preparation methods of biodegradable medical dressing, the raw material of the biodegradable medical dressing for production includes: catkin, viscose rayon and chitosan, specifically includes the following steps: S1: cleaning catkin rejects impurity, vacuum drying is then carried out at 40-60 DEG C；S2: catkin and viscose rayon are processed into catkin/viscose glue non-woven cloth；S3: the chitosan finishing liquid that mass fraction is 0.1-0.5g/ml is prepared；S4: the final finishing of second dipping and rolling is carried out to catkin/viscose glue non-woven cloth using the chitosan finishing liquid of step S3 configuration；S5: 5-15min is dried at 80-100 DEG C to the catkin after arrangement/viscose glue non-woven cloth.A kind of preparation method of biodegradable medical dressing provided by the invention, catkin is recycled, and for producing non-woven cloth medical dressing, is turned waste into wealth, medical dressing obtained has biodegradability, high-hydroscopicity, antibacterial functions and hemostatic function.
Description
Technical field
The present invention relates to field of medical article technology more particularly to a kind of preparation methods of biodegradable medical dressing.
Background technique
Spring is that the season that catkin dances in the air all over the sky and various allergic symptoms high-incidence season, caused allergy are mainly sent out
Life is in the upper respiratory tract, after catkin is inhaled into nasal cavity, strong impulse, runny nose, cough and asthma etc. can be caused to react, such as skin scabies
Itch, eye conjunctiva is rubescent etc., serious also to will affect sleep, the catkin danced in the air all over the sky can also cause certain journey to urban ecological environment
The destruction of degree, willow catkins flying in the air also cause damages to public safety, traffic safety and communal facility, as willow catkins flying in the air may block pedestrian, vehicle
Trip sight, to influence traffic safety.However recorded according to Biography of Medical Figures, catkin is the Chinese medicine with refrigerant hemostatic healing efficacy, and poison is secondary
Act on small, have no drug resistance, be used as natural material, raw material from the Nature present, it is from a wealth of sources.But due to catkin suede
It is partially short and more loose, strongly it is worth lower, it is difficult to which spun yarn, generally directly as waste processing, this has been resulted in greatly
Cellulose resource waste.
Summary of the invention
The present invention recycles catkin in view of the above-mentioned problems, propose a kind of preparation method of biodegradable medical dressing
It utilizes, for producing non-woven cloth medical dressing, turns waste into wealth, biodegradable medical dressing obtained has biodegradable
Property, high-hydroscopicity, antibacterial functions and hemostatic function.
The technical solution adopted by the present invention is as follows: the present invention provides a kind of preparation sides of biodegradable medical dressing
The raw material of method, the biodegradable medical dressing for production includes: catkin, viscose rayon and chitosan, is specifically included
Following steps:
S1: cleaning catkin rejects impurity, vacuum drying is then carried out at 40-60 DEG C；
S2: catkin and viscose rayon are processed into catkin/viscose glue non-woven cloth；
S3: the chitosan finishing liquid that mass fraction is 0.1-0.5g/ml is prepared；
S4: the rear whole of second dipping and rolling is carried out to catkin/viscose glue non-woven cloth using the chitosan finishing liquid of step S3 configuration
Reason；
S5: 5-15min is dried at 80-100 DEG C to the catkin after arrangement/viscose glue non-woven cloth.
In one embodiment of the invention, the step S2 includes moulding process and needling process, and the moulding process is by adding
Work direction is disposed with opener, cotton feeder, carding machine and lapping machine, and the needling process is set gradually by machine direction
There are charger, pre-needling machine, pre- lapper, needing machine and main needing machine, the opener is to fine by catkin and viscose glue
Dimension is loosened, and is uniformly mixed, and the cotton feeder is mixed to opening fiber through the uniform regenerated fiber layer of broadwise, institute
It states carding machines to form the thin net of single layer fibre to comb regenerated fiber layer, the lapping machine is to the single layer that handles carding machine
Fibrous web cross folding forms multilayer fibre web, and the charger is to feed multilayer fibre web in pre-needling machine, the pre- needle
Thorn machine to by fluffy fibre web pinprick reinforcement, the pre- lapper to by fibre web crimped, it is described fall needing machine to will be more
Layer fibre web falls pinprick reinforcement, and the main needing machine is to by multilayer fibre web repeated puncture, fixed to form fine and close catkin/viscose glue non-
Woven cloths.
In one embodiment of the invention, the parameter of the needling process includes: that the speed of input and output material is 20m/min, needle thorn
Frequency is 33 times/min, and the needle thorn number of the main needing machine is 2 times.
In one embodiment of the invention, the step S3 is the following steps are included: chitosan is added in acetic acid solution 60
Then DEG C stirring uses the bath raio of 1:30, adds acetic acid solution to dilute again the chitosan solution sufficiently dissolved, match to abundant dissolution
The chitosan finishing liquid that mass fraction is 0.2-2% is made.
In one embodiment of the invention, the second dipping and rolling of the step S4 is the following steps are included: non-woven by catkin/viscose glue
Cloth is placed in chitosan finishing liquid, along with the stirring of electric mixer, is covered in finishing fluid uniformly on non-woven cloth,
After impregnating 30min under the conditions of 60 DEG C, first time pressure rolling is carried out, after sample to be then placed in 60 DEG C of condition dipping 30min, is carried out
Second of pressure rolling.
In one embodiment of the invention, the pick-up after the second dipping and rolling is 80-90%.
In one embodiment of the invention, catkin/viscose glue non-woven cloth dries 5- in 80-100 DEG C of baking oven after second dipping and rolling
15min。
In one embodiment of the invention, the quality proportioning of the catkin/viscose glue is 15/85-40/60.
The beneficial effects of the present invention are: being used the present invention provides a kind of preparation method of biodegradable medical dressing
Catkin/viscose glue non-woven cloth is made in catkin and viscose rayon hybrid process, recycles chitosan finishing liquid to carry out final finishing, finally
Drying is made.Using waste catkin as the raw material for producing the biodegradable medical dressing, realization is turned waste into wealth；Catkin is day
Right material, source is sufficient, and the non-woven cloth being made from it has biodegradability；Catkin has the hollow structure of height, energy
A large amount of water is absorbed, the non-woven cloth being made from it has high-hydroscopicity and hemostatic function；Chitosan has the effect of antibacterial, because
This catkin/viscose glue non-woven cloth carries out final finishing through chitosan finishing liquid, and biodegradable medical dressing obtained has antibacterial
Function.
Detailed description of the invention
Fig. 1 is that the catkin without final finishing/viscose glue non-woven cloth of the invention imitates the antibacterial experiment of staphylococcus aureus
Fruit figure；
Fig. 2 is that catkin/viscose glue non-woven cloth of the present invention Jing Guo final finishing imitates the antibacterial experiment of staphylococcus aureus
Fruit figure；
Fig. 3 is antibacterial experiment effect picture of the catkin without the final finishing/viscose glue non-woven cloth of the invention to Escherichia coli；
Fig. 4 is antibacterial experiment effect picture of catkin/viscose glue non-woven cloth of the present invention Jing Guo final finishing to Escherichia coli.
Specific embodiment
Below with reference to each attached drawing, by specific embodiment, the present invention in detail, completely describe.
The present invention provides a kind of biodegradable medical dressing, including following material component: catkin, viscose rayon and shell
Glycan.Catkin fiber finer and it is short, be difficult independent networking or fibre web be thin, manufactured composite material strength is lower, therefore by catkin
Medical dressing is made by mixing with viscose rayon.Catkin easily causes allergic symptom, and has a degree of destruction to environment, often quilt
As offal treatment, using waste catkin as the raw material for producing the biodegradable medical dressing, realization is turned waste into wealth；Willow
Wadding is the Chinese medicine with refrigerant hemostatic healing efficacy, and toxic side effect is small, is used as natural material, and source is sufficient, and what is be made from it non-knits
Cloth is made with biodegradability；Catkin has the hollow structure of height, can absorb a large amount of water, the non-woven cloth being made from it
With high-hydroscopicity；Chitosan has the effect of antibacterial, therefore catkin/viscose glue non-woven cloth is whole after the progress of chitosan finishing liquid
Reason, biodegradable medical dressing obtained have antibacterial functions.
Contain catkin fiber and catkin seed in catkin, the main comprise material of catkin fiber is cellulose, catkin fiber
Hollow structure be conducive to absorb large quantity of moisture, can achieve the effect that hemostasis in a short time.Main component in catkin seed
For carbon, oxygen, also containing calcium, potassium, sulphur etc., wherein the mass content of calcium and potassium is respectively 0.79% and 0.465%, according to present doctor
It learns it was verified that the calcium in blood has facilitation to blood coagulation, for coagulation factor, it can effectively keep cell membrane, capillary
Permeability, reduce the excitability of muscle and nerve, and transfer a variety of factors and participate in hemostasis, potassium can effectively control nervous system
Excitement, maintain the normal transport capacity of blood vessel, maintain the blood circulation of local damage, eliminate the inflammation of local damage, have
Conducive to the histocyte Regeneration and Repair for promoting damage, achieve the purpose that treatment restores.
The present invention also provides a kind of preparation methods of biodegradable medical dressing, for making above-mentioned biodegradable
Medical dressing, comprising the following steps:
S1: cleaning catkin rejects impurity, vacuum drying is then carried out at 40-60 DEG C；
S2: catkin and viscose rayon are uniformly mixed and are processed into catkin/viscose glue non-woven cloth；
S3: the chitosan finishing liquid that mass fraction is 0.1-0.5g/ml is prepared；
S4: the rear whole of second dipping and rolling is carried out to catkin/viscose glue non-woven cloth using the chitosan finishing liquid of step S3 configuration
Reason；
S5: 5-15min is dried at 80-100 DEG C to the catkin after arrangement/viscose glue non-woven cloth.
During catkin is collected, can inevitably there are dust, the impurity such as leaf, when making medical accessory, for health
Property and aesthetics, need in water to clean catkin, reject impurity, then in 40-60 DEG C of vacuum drying.By loose catkin and
Viscose rayon is processed into fine and close catkin/viscose glue non-woven cloth.During the final finishing of chitosan finishing liquid, viscose glue/
The surface of catkin non-woven material is uniformly coated with one layer of chitosan, and chitosan has good film forming, so after arranging
The mechanical property of non-woven cloth be optimised.Chitosan also has the effect of antibacterial, therefore catkin/viscose glue non-woven cloth is through shell
Glycan finishing fluid carries out final finishing, and biodegradable medical dressing obtained has antibacterial functions.
Above-mentioned steps S2 includes moulding process and needling process, and the moulding process is disposed with shredding by machine direction
Machine, cotton feeder, carding machine and lapping machine, the needling process are disposed with charger, pre-needling machine, pre- by machine direction
Lapper, needing machine and main needing machine, the opener are uniformly mixed catkin and viscose rayon to be loosened
It closes, the cotton feeder is mixed to opening fiber through the uniform regenerated fiber layer of broadwise, and the carding machines will be will regenerate
Fibrous layer combs to form the thin net of single layer fibre, and the lapping machine is to the thin net cross folding shape of single layer fibre that handles carding machine
At multilayer fibre web, the charger is to feed multilayer fibre web in pre-needling machine, and the pre-needling machine is to by fluffy fibre
Net pinprick reinforcement, the pre- lapper to by fibre web crimped, it is described fall needing machine multilayer fibre web is fallen pinprick reinforcement, institute
It states main needing machine and forms fine and close catkin/viscose glue non-woven cloth to fix multilayer fibre web repeated puncture.
Preferably, it is 20m/min that the parameter of needling process, which includes: the speed of input and output material, and punch frequency is 33 times/min, main
The needle thorn number of needing machine is 2 times, and catkin obtained/viscose glue non-woven cloth thickness, grammes per square metre, mechanical property etc. are best.Disengaging
Speed difference between material extends fibre web by drawing-off, and discharging speed is too small, and production efficiency is low, and discharging speed is excessive, fine
The mechanical property and surface density of net decline；Needle pierces the pressure given and fibre web is made to generate diffusion deformation, and needle thorn number is very few, fine
Intersecting between dimension tangles not consolidation, and needle thorn number is excessive, will cause the damage of few fibers in fibre web, the mechanics of fibre web
Performance and surface density decline；Punch frequency is too low, and intersecting between fiber tangles not consolidation, and punch frequency is excessively high, also can
Cause the damage of few fibers in fibre web, mechanical property and the surface density decline of fibre web.
Above-mentioned steps S3 is the following steps are included: chitosan is added in acetic acid solution in 60 DEG C of stirrings to abundant dissolution, so
The bath raio for using 1:30 afterwards, adds acetic acid solution to dilute the chitosan solution sufficiently dissolved again, and being configured to mass fraction is 0.1-
The chitosan finishing liquid of 0.5g/ml.
The second dipping and rolling of above-mentioned steps S4 is the following steps are included: be placed on chitosan finishing liquid for catkin/viscose glue non-woven cloth
In, it along with the stirring of electric mixer, is covered in finishing fluid uniformly on non-woven cloth, is impregnated under the conditions of 60 DEG C
After 30min, first time pressure rolling is carried out, after sample to be then placed in 60 DEG C of condition dipping 30min, carries out second of pressure rolling.Afterwards
Arrangement is that improve fabric feeling and appearance by the method for physics, chemistry or physics and chemistry (such as hard finishing, soft whole
Reason, calendering or raising etc.), improve fabric quality and to assign the new function of fabric (such as crease-resistant, waterproof, antifouling, anti-corrosion, mould proof, anti-
Moth and fungi-proofing etc.) process.Catkin/viscose glue non-woven cloth itself is whole after the progress of chitosan finishing liquid without antibacterial effect
After reason, inhibition zone becomes smaller, therefore the catkin after final finishing/viscose glue non-woven cloth has good antibacterial effect.
Pick-up after second dipping and rolling is 80-90%.Pick-up is also referred to as liquid carrying rate, be on fabric the liquid weight of band with knit
The percentage of object weight itself.Accurate saying is after solution on stock tank band, by rolling after rod rolls the molten of band on cloth cover
Liquid weight and the percentage for padding preceding original fabric weight.The calculation formula of pick-up are as follows: pick-up=[(cloth after second dipping and rolling
Weight-experiment before dry cloth weight)/test before dry cloth weight] × 100%.
Catkin/viscose glue non-woven cloth dries 5-15min, suitable baking temperature after second dipping and rolling in 80-100 DEG C of baking oven
Degree can guarantee that the rate of drying of fabric after arranging avoids fabric general so that the film that chitosan is formed is fixed on fabric surface
Huang can also lead to being thermally decomposed for fiber to avoid temperature is excessively high, reduce the strength of fabric.
Viscose rayon is that raw material is made through wet spinning with natural material (timber, cotton linter, bagasse etc.).Viscose glue is fine
Dimension has good hygroscopicity, and regain is 13% or so, breaking strength 1.6-2.7cn/dtex, and elongation at break is
16%-22%, viscose rayon density close to cotton be 1.50-1.52g/cm3.The hygroscopicity of viscose rayon meets the life of human skin
The features such as reason requires, and has smooth nice and cool, ventilative, antistatic, antiultraviolet, and dyefastness is preferable, especially viscose rayon is long
Degree, fineness are uniform, and impurity content is few in fiber, and manufactured composite material quality is preferable.The raw material sources of viscose rayon are in natural
Material, catkin fiber and its seed are also natural material, therefore the non-woven material that catkin and viscose glue are mixed has biology
Degradability.
Catkin/viscose glue quality proportioning is 15/85-40/60, and when catkin content is lower than 15%, the medical performance of catkin is not
It must preferably be embodied, when catkin content is more than 40%, the mechanical property of the biodegradable medical dressing is not ideal enough,
Therefore catkin/viscose glue quality proportioning is the various performances of catkin/viscose glue Nonwoven Medical Dressings within the scope of 15/85-40/60
Relatively preferably.0.1-10mm can be made in the thickness of the biodegradable medical dressing, can according to need carry out processing and fabricating.
Embodiment one
A kind of biodegradable medical dressing, catkin/viscose glue quality proportioning are 5/95.Catkin and viscose rayon are processed
At catkin/viscose glue non-woven cloth.
Embodiment two
A kind of biodegradable medical dressing, catkin/viscose glue quality proportioning are 5/95.Catkin and viscose rayon are processed
The rear whole of second dipping and rolling is carried out by chitosan finishing liquid at catkin/viscose glue non-woven cloth, then by catkin/viscose glue non-woven cloth
Reason, finally dries 5-15min at 80-100 DEG C to the viscose glue non-woven cloth after arrangement.
Embodiment three
A kind of biodegradable medical dressing, catkin/viscose glue quality proportioning are 15/85.Catkin and viscose rayon are added
Work is at catkin/viscose glue non-woven cloth.
Example IV
A kind of biodegradable medical dressing, catkin/viscose glue quality proportioning are 15/85.Catkin and viscose rayon are added
Work carries out the rear whole of second dipping and rolling by chitosan finishing liquid at catkin/viscose glue non-woven cloth, then by catkin/viscose glue non-woven cloth
Reason, finally dries 5-15min at 80-100 DEG C to the viscose glue non-woven cloth after arrangement.
Embodiment five
A kind of biodegradable medical dressing, catkin/viscose glue quality proportioning are 25/75.Catkin and viscose rayon are added
Work is at catkin/viscose glue non-woven cloth.
Embodiment six
A kind of biodegradable medical dressing, catkin/viscose glue quality proportioning are 25/75.Catkin and viscose rayon are added
Work carries out the rear whole of second dipping and rolling by chitosan finishing liquid at catkin/viscose glue non-woven cloth, then by catkin/viscose glue non-woven cloth
Reason, finally dries 5-15min at 80-100 DEG C to the viscose glue non-woven cloth after arrangement.
Embodiment seven
A kind of biodegradable medical dressing, catkin/viscose glue quality proportioning are 35/65.Catkin and viscose rayon are added
Work is at catkin/viscose glue non-woven cloth.
Embodiment eight
A kind of biodegradable medical dressing, catkin/viscose glue quality proportioning are 35/65.Catkin and viscose rayon are added
Work carries out the rear whole of second dipping and rolling by chitosan finishing liquid at catkin/viscose glue non-woven cloth, then by catkin/viscose glue non-woven cloth
Reason, finally dries 5-15min at 80-100 DEG C to the viscose glue non-woven cloth after arrangement.
Embodiment nine
A kind of biodegradable medical dressing, catkin/viscose glue quality proportioning are 40/60.Catkin and viscose rayon are added
Work is at catkin/viscose glue non-woven cloth.
Embodiment ten
A kind of biodegradable medical dressing, catkin/viscose glue quality proportioning are 40/60.Catkin and viscose rayon are added
Work carries out the rear whole of second dipping and rolling by chitosan finishing liquid at catkin/viscose glue non-woven cloth, then by catkin/viscose glue non-woven cloth
Reason, finally dries 5-15min at 80-100 DEG C to the viscose glue non-woven cloth after arrangement.
Embodiment 11
A kind of biodegradable medical dressing, catkin/viscose glue quality proportioning are 45/55.Catkin and viscose rayon are added
Work is at catkin/viscose glue non-woven cloth.
Embodiment 12
A kind of biodegradable medical dressing, catkin/viscose glue quality proportioning are 45/55.Catkin and viscose rayon are added
Work carries out the rear whole of second dipping and rolling by chitosan finishing liquid at catkin/viscose glue non-woven cloth, then by catkin/viscose glue non-woven cloth
Reason, finally dries 5-15min at 80-100 DEG C to the viscose glue non-woven cloth after arrangement.
The procedure of processing of the non-woven cloth of above-described embodiment 1-12 is as follows:
(1) catkin and viscose rayon are equably loosened with opener；
(2) catkin uniformly loosened and viscose rayon are made through the uniform regenerated fiber of broadwise with cotton feeder；
(3) regenerated fiber layer is combed to form the thin net of single layer fibre with carding machine；
(4) the thin net cross folding of single layer fibre is formed into multilayer fibre web with lapping machine；
(5) multilayer fibre web is fed in pre-needling machine with charger, input and output material speed is 20.00m/min；
(6) with pre-needling machine by fluffy multilayer fibre web pinprick reinforcement, input and output material speed is 20.00m/min, punch frequency
For 33 times/min；
(7) with pre- lapper multilayer fibre web is carried out crimped；
(8) multilayer fibre web is fallen into pinprick reinforcement with falling needing machine, input and output material speed is 20.00m/min, punch frequency 33
Secondary/min；
(9) fine and close catkin/viscose glue non-woven cloth is formed to fix multilayer fibre web repeated puncture with main needing machine, it is main
The processing times of needing machine are that twice, input and output material speed is 20.00m/min, and punch frequency is 33 times/min.
The procedure of processing of the second dipping and rolling of above-described embodiment 2,4,6,8,10 and 12 is as follows:
(1) catkin/viscose glue non-woven cloth or viscose glue non-woven cloth are put into mass fraction is that 0.1-0.5g/ml chitosan is whole
It manages in liquid, along with the stirring of electric mixer, is covered in finishing fluid uniformly on non-woven cloth, is impregnated under the conditions of 60 DEG C
After 30min, first time pressure rolling is carried out；
(2) catkin after first time pressure rolling/viscose glue non-woven cloth or viscose glue non-woven cloth are put into mass fraction again is
In 0.1-0.5g/ml chitosan finishing liquid, along with the stirring of electric mixer, finishing fluid is made uniformly to be covered in non-woven cloth
On, after impregnating 30min under the conditions of 60 DEG C, carry out second of pressure rolling.
The performance test of 1 catkin of table/viscose glue non-woven cloth
It can be seen that the increase with catkin content according to the testing result of table 1, surface density is being gradually reduced, catkin/viscous
The longitudinal fracture strength and Cross breaking strength of glue non-woven cloth decline therewith, when catkin content is more than 40%, catkin/viscose glue
The ultimate strength and bursting strength of non-woven cloth sharply decline.The mechanics of non-woven cloth after the arrangement of chitosan second dipping and rolling
Performance and surface density are centainly optimized, and ultimate strength and bursting strength increase.Therefore from longitudinal fracture strength, cross
To from the aspect of ultimate strength and surface density three, catkin content is no more than 40%.
When 15% or less catkin content, with the increase of catkin content, the gas permeability of non-woven cloth is remarkably decreased, and willow
Wadding content be more than after 15% ventilative fall off rate it is more gentle.With gradually increasing for catkin content, the imbibition times of non-woven cloth
Rate is increasing, and when the weight ratio of catkin reaches 15%, the liquid absorbency rate of non-woven cloth is dramatically increased, to have the effect of hemostasis
Fruit.Consider from gas permeability and imbibition rate, the content of catkin not preferably less than 15%, the medical property of catkin can just obtain preferable body
It is existing.Therefore, catkin/viscose glue proportion is the various performances of catkin/viscose glue Nonwoven Medical Dressings within the scope of 15/85-40/60
Relatively preferably.
Selecting catkin/viscose glue proportion is that the 20/80 catkin/viscose glue non-woven cloth being processed into is carried out to Staphylococcus aureus
The antibiotic property test experiments of bacterium and Escherichia coli, staphylococcus aureus represent gram-positive bacterium, and Escherichia coli represent leather
Gram-negative bacteria, specific experiment step are as follows: preparation agar is placed in culture dish within first day, with scribing line stroke after solidification to be cooled
It takes bacterium to cross on nutrient agar panel, and is cultivated one day in 37 DEG C of gas bath constant temperature oscillator, to activate bacterium；Second
It prepares nutrient broth, and a typical bacterium colony is taken in the bacterium activated, is inoculated in nutrient broth, and in 37 DEG C,
It is cultivated one day in the gas bath constant temperature oscillator of 130r/min and obtains bacterial suspension；It is flat that nutrient agar is made in third day preparation agar
Plate is placed in plate from absorption 0.1mL in bacterial suspension with liquid-transfering gun and is applied uniformly, to bacterial suspension in plate with spreading rod
When micro- dry, an equal amount of circle will be cut into catkin/viscose glue nonwoven samples after arrangement before arranging and is placed in center；4th day
Observation experiment phenomenon.It please refers to shown in Fig. 1-4, the catkin without final finishing/there is no antibiotic properties for viscose glue non-woven cloth, that is,
Say the effect of viscose rayon and catkin without antibacterial itself, and the catkin Jing Guo final finishing/viscose glue non-woven cloth can generate inhibition zone,
Therefore, catkin/viscose glue non-woven cloth is by having good antibacterial effect after arranging.
The above description is only a preferred embodiment of the present invention, not thereby limits scope of patent protection of the invention, all
It is directly or indirectly to be used in other relevant technologies with equivalent structure transformation made by description of the invention and accompanying drawing content
Field similarly includes within the scope of the present invention.
Claims (9)
1. a kind of preparation method of biodegradable medical dressing, which is characterized in that the biodegradable for production is medical
The raw material of dressing includes: catkin, viscose rayon and chitosan, specifically includes the following steps:
S1: cleaning catkin rejects impurity, vacuum drying is then carried out at 40-60 DEG C；
S2: catkin and viscose rayon are processed into catkin/viscose glue non-woven cloth；
S3: the chitosan finishing liquid that mass fraction is 0.1-0.5g/ml is prepared；
S4: the final finishing of second dipping and rolling is carried out to catkin/viscose glue non-woven cloth using the chitosan finishing liquid of step S3 configuration；
S5: 5-15min is dried at 80-100 DEG C to the catkin after arrangement/viscose glue non-woven cloth.
2. the preparation method of biodegradable medical dressing as described in claim 1, which is characterized in that the step S2 includes
Moulding process and needling process, the moulding process are disposed with opener, cotton feeder, carding machine and paving by machine direction
Net machine, the needling process are disposed with charger, pre-needling machine, pre- lapper, needing machine and master by machine direction
Needing machine, the opener are uniformly mixed catkin and viscose rayon to be loosened, and the cotton feeder is to shredding fibre
Dimension is mixed through the uniform regenerated fiber layer of broadwise, and to form single layer fibre thin to comb regenerated fiber layer for the carding machines
Net, the lapping machine form multilayer fibre web to the thin net cross folding of single layer fibre for handling carding machine, and the charger is used
To feed multilayer fibre web in pre-needling machine, the pre-needling machine is to by fluffy fibre web pinprick reinforcement, the pre- lapper
To by fibre web crimped, it is described fall needing machine multilayer fibre web is fallen pinprick reinforcement, the main needing machine is to by multilayer fibre
Net repeated puncture is fixed to form fine and close catkin/viscose glue non-woven cloth.
3. the preparation method of biodegradable medical dressing as claimed in claim 2, which is characterized in that the needling process
Parameter includes: that the speed of input and output material is 20m/min, and punch frequency is 33 times/min, and the needle thorn number of the main needing machine is 2
It is secondary.
4. the preparation method of biodegradable medical dressing as described in claim 1, which is characterized in that the step S3 includes
Following steps: chitosan being added in acetic acid solution in 60 DEG C of stirrings to abundant dissolution, the bath raio of 1:30 is then used, will be abundant
The chitosan solution of dissolution adds acetic acid solution to dilute again, is configured to the chitosan finishing liquid that mass fraction is 0.1-0.5g/ml.
5. the preparation method of biodegradable medical dressing as described in claim 1, which is characterized in that the two of the step S4
Leaching two is rolled the following steps are included: catkin/viscose glue non-woven cloth is placed in chitosan finishing liquid, along with stirring for electric mixer
It mixes, is covered in finishing fluid uniformly on non-woven cloth, after impregnating 30min under the conditions of 60 DEG C, carry out first time pressure rolling, then
After sample to be placed in 60 DEG C of condition dipping 30min, second of pressure rolling is carried out.
6. the preparation method of biodegradable medical dressing as claimed in claim 5, which is characterized in that after the second dipping and rolling
Pick-up be 80-90%.
7. the preparation method of biodegradable medical dressing as claimed in claim 5, which is characterized in that catkin/viscose glue is non-to be knitted
Cloth is made after second dipping and rolling, dries 5-15min in 80-100 DEG C of baking oven.
8. the preparation method of biodegradable medical dressing as described in claim 1, which is characterized in that the catkin/viscose glue
Quality proportioning be 15/85-40/60.
9. the preparation method of biodegradable medical dressing as described in claim 1, which is characterized in that the biodegradable
The antibiotic property test that medical dressing carries out represents gram-positive bacterium with staphylococcus aureus, and it is blue that Escherichia coli represent leather
Family name's negative bacteria.
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