CN111607894A - Nonwoven cotton dressing for negative pressure drainage and preparation method thereof - Google Patents
Nonwoven cotton dressing for negative pressure drainage and preparation method thereof Download PDFInfo
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- CN111607894A CN111607894A CN202010490787.XA CN202010490787A CN111607894A CN 111607894 A CN111607894 A CN 111607894A CN 202010490787 A CN202010490787 A CN 202010490787A CN 111607894 A CN111607894 A CN 111607894A
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- negative pressure
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- pressure drainage
- polyester staple
- lapping
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- 229920000742 Cotton Polymers 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 96
- 229920000728 polyester Polymers 0.000 claims abstract description 40
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052709 silver Inorganic materials 0.000 claims abstract description 27
- 239000004332 silver Substances 0.000 claims abstract description 27
- 229920000297 Rayon Polymers 0.000 claims abstract description 21
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 16
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 16
- 241001330002 Bambuseae Species 0.000 claims abstract description 16
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 16
- 239000011425 bamboo Substances 0.000 claims abstract description 16
- 239000003610 charcoal Substances 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 238000009960 carding Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 230000001788 irregular Effects 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 abstract description 14
- 230000035699 permeability Effects 0.000 abstract description 8
- 238000004383 yellowing Methods 0.000 abstract description 7
- 230000000844 anti-bacterial effect Effects 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 13
- 206010052428 Wound Diseases 0.000 description 9
- 208000027418 Wounds and injury Diseases 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000214 effect on organisms Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
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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
-
- 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
- A61L15/18—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
-
- 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
- A61L15/46—Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
-
- 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
- D04H1/407—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 containing absorbing substances, e.g. activated carbon
-
- 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
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
-
- 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
- D04H1/4391—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 characterised by the shape of the fibres
-
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/55—Polyesters
-
- 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
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/10—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing inorganic materials
- A61L2300/102—Metals or metal compounds, e.g. salts such as bicarbonates, carbonates, oxides, zeolites, silicates
- A61L2300/104—Silver, e.g. silver sulfadiazine
-
- 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
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
- A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
-
- 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
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/60—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a special physical form
- A61L2300/602—Type of release, e.g. controlled, sustained, slow
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Materials Engineering (AREA)
- Epidemiology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention provides a non-woven cotton dressing for negative pressure drainage, which is prepared from the following components in parts by weight: 15-20 parts of silver-loaded viscose fiber, 15-35 parts of low-melting-point polyester staple fiber, 45-65 parts of three-dimensional crimped hollow polyester staple fiber and 1-2 parts of bamboo charcoal powder. The invention also provides a preparation method of the non-woven cotton dressing for negative pressure drainage. The non-woven cotton dressing for negative pressure drainage provided by the invention has the advantages of good air permeability, rebound resilience and stability, no yellowing during storage and no damage to elasticity.
Description
Technical Field
The invention relates to a non-woven cotton dressing for negative pressure drainage and a preparation method thereof.
Background
The wound sealing negative pressure drainage technology is a new wound treatment technology which is developed rapidly in recent years, and achieves the treatment purpose by wrapping a drainage tube or a disc with sponge, gauze and the like, not directly contacting with wound tissues and carrying out intermittent negative pressure suction or continuous negative pressure suction. Evidence-based medical research has proved that the technology is obviously superior to the traditional dressing when applied to the treatment of chronic wounds, wounds with deep cavities or pipeline wounds, and has the advantages of more excellent cost performance and obviously reduced workload of medical staff.
At present, the closed negative pressure drainage technology adopts a foam porous dressing with a drainage tube to cover or fill a wound surface, and the main materials are polyurethane sponge and polyvinyl alcohol sponge. Both materials are produced by chemical foaming, have organic residues, have certain toxic and side effects on organisms, and are yellowing, oxidation and hardening during storage to cause elasticity damage, so the stability is poor.
Chinese patent application CN201310040429.9 discloses "lavage type negative pressure dressing", including the dressing body, the dressing body includes the waterproof pad pasting of viscidity and sets up the polyurethane sponge on the waterproof pad pasting of viscidity, be provided with in the polyurethane sponge and be used for connecting the drainage tube of outside negative pressure source and be used for injecting the drip tube of lavage liquid. When dressing change is carried out, the wound surface is debrided and stopped bleeding, and the protective film is torn off and then is directly stuck on the wound surface. The invention has the problems of yellowing, poor air permeability and the like during storage.
Disclosure of Invention
The invention aims to provide a non-woven cotton dressing for negative pressure drainage, which has better air permeability, rebound resilience and stability, and does not yellow and damage elasticity during storage.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the non-woven cotton dressing for negative pressure drainage is prepared from the following components in parts by weight: 15-20 parts of silver-loaded viscose fiber, 15-35 parts of low-melting-point polyester staple fiber, 45-65 parts of three-dimensional crimped hollow polyester staple fiber and 1-2 parts of bamboo charcoal powder.
Further, the silver content of the silver-loaded viscose fiber is 4%.
Furthermore, the low-melting-point polyester staple fiber is a sheath-core structure type polyester staple fiber with the melting point of 110 ℃, the fineness of 2D and the length of 51 mm.
Furthermore, the fineness of the three-dimensional curled hollow polyester staple fiber is 0.5D, and the length of the three-dimensional curled hollow polyester staple fiber is 51 mm.
The invention also provides a preparation method of the non-woven cotton dressing for negative pressure drainage.
In order to solve the technical problems, the technical scheme is as follows:
a preparation method of a non-woven cotton dressing for negative pressure drainage comprises the following steps:
s1, weighing the components in parts by weight, uniformly mixing silver-loaded viscose fibers, three-dimensional curled hollow polyester staple fibers, bamboo charcoal powder and half of low-melting-point polyester staple fibers in parts by weight, and then opening to obtain mixed fibers;
s2, preparing the mixed fibers obtained in the step S1 into fiber webs by a mechanical carding and web forming method;
s3, adding the fiber web obtained in the step S2 into a vertical lapping machine, simultaneously scattering the remaining low-melting-point polyester staple fibers between the fiber webs, and vertically lapping to obtain lapping cotton;
s4, placing the lapping cotton obtained in the step S3 into a drying tunnel, baking for 5-10 minutes, taking out, and cooling to room temperature;
and S5, cutting off the irregular part on the edge of the lapping cotton cooled to room temperature in the step S4, and punching after cutting to obtain the non-woven cotton dressing for negative pressure drainage.
Further, in step S3 of the present invention, the lapping width during vertical lapping is 100-200 mm.
Further, in step S4 of the present invention, the temperature in the drying tunnel is 100-125 ℃.
Compared with the prior art, the invention has the following beneficial effects:
1) the invention forms a unique upright structure by vertically lapping various fibers, and the fiber webs are provided with hot melt adhesion by the low-melting point polyester staple fibers, so that the dressing integrally generates high elasticity and pressure resistance.
2) The silver-loaded viscose fiber is used, the silver-loaded viscose fiber has excellent antibacterial performance, but the compatibility and the associativity of the silver-loaded viscose fiber with other fibers are poor, so that the antibacterial performance and the antibacterial durability of the dressing are influenced.
Detailed Description
The present invention will be described in detail with reference to specific embodiments, and the exemplary embodiments and descriptions thereof herein are provided to explain the present invention but not to limit the present invention.
Example 1
The non-woven cotton dressing for negative pressure drainage is prepared from the following components in parts by weight: 20 parts of silver-loaded viscose fibers with the silver content of 4 percent, 30 parts of sheath-core structure type polyester staple fibers with the melting point of 110 ℃, the fineness of 2D and the length of 51mm, 50 parts of three-dimensional curled hollow polyester staple fibers with the fineness of 0.5D and the length of 51mm and 1 part of bamboo charcoal powder.
The preparation method of this example includes the following steps:
s1, weighing the components in parts by weight, uniformly mixing silver-loaded viscose fibers, three-dimensional curled hollow polyester staple fibers, bamboo charcoal powder and half of low-melting-point polyester staple fibers in parts by weight, and then opening to obtain mixed fibers;
s2, preparing the mixed fibers obtained in the step S1 into fiber webs by a mechanical carding and web forming method;
s3, adding the fiber web obtained in the step S2 into a vertical lapping machine, simultaneously scattering the rest low-melting-point polyester staple fibers between the fiber webs, and vertically lapping to obtain lapping cotton, wherein the lapping width is 200 mm;
s4, placing the lapping cotton obtained in the step S3 in a drying tunnel at 110 ℃, baking for 10 minutes, taking out and cooling to room temperature;
and S5, cutting off the irregular part on the edge of the lapping cotton cooled to room temperature in the step S4, and punching after cutting to obtain the non-woven cotton dressing for negative pressure drainage.
Example 2
The non-woven cotton dressing for negative pressure drainage is prepared from the following components in parts by weight: 15 parts of silver-loaded viscose fibers with the silver content of 4 percent, 30 parts of sheath-core structure type polyester staple fibers with the melting point of 110 ℃, the fineness of 2D and the length of 51mm, 55 parts of three-dimensional curled hollow polyester staple fibers with the fineness of 0.5D and the length of 51mm and 2 parts of bamboo charcoal powder.
The preparation method of this example includes the following steps:
s1, weighing the components in parts by weight, uniformly mixing silver-loaded viscose fibers, three-dimensional curled hollow polyester staple fibers, bamboo charcoal powder and half of low-melting-point polyester staple fibers in parts by weight, and then opening to obtain mixed fibers;
s2, preparing the mixed fibers obtained in the step S1 into fiber webs by a mechanical carding and web forming method;
s3, adding the fiber web obtained in the step S2 into a vertical lapping machine, simultaneously scattering the rest low-melting-point polyester staple fibers between the fiber webs, and vertically lapping to obtain lapping cotton, wherein the lapping width is 110 mm;
s4, placing the lapping cotton obtained in the step S3 in a drying tunnel at 115 ℃, baking for 8 minutes, taking out and cooling to room temperature;
and S5, cutting off the irregular part on the edge of the lapping cotton cooled to room temperature in the step S4, and punching after cutting to obtain the non-woven cotton dressing for negative pressure drainage.
Example 3
The non-woven cotton dressing for negative pressure drainage is prepared from the following components in parts by weight: 18 parts of silver-loaded viscose fibers with the silver content of 4 percent, 15 parts of sheath-core structure type polyester staple fibers with the melting point of 110 ℃, the fineness of 2D and the length of 51mm, 65 parts of three-dimensional curled hollow polyester staple fibers with the fineness of 0.5D and the length of 51mm and 1.5 parts of bamboo charcoal powder.
The preparation method of this example includes the following steps:
s1, weighing the components in parts by weight, uniformly mixing silver-loaded viscose fibers, three-dimensional curled hollow polyester staple fibers, bamboo charcoal powder and half of low-melting-point polyester staple fibers in parts by weight, and then opening to obtain mixed fibers;
s2, preparing the mixed fibers obtained in the step S1 into fiber webs by a mechanical carding and web forming method;
s3, adding the fiber web obtained in the step S2 into a vertical lapping machine, simultaneously scattering the rest low-melting-point polyester staple fibers between the fiber webs, and vertically lapping to obtain lapping cotton, wherein the lapping width is 150 mm;
s4, placing the lapping cotton obtained in the step S3 in a drying tunnel at 100 ℃, baking for 7 minutes, taking out and cooling to room temperature;
and S5, cutting off the irregular part on the edge of the lapping cotton cooled to room temperature in the step S4, and punching after cutting to obtain the non-woven cotton dressing for negative pressure drainage.
Example 4
The non-woven cotton dressing for negative pressure drainage is prepared from the following components in parts by weight: 16 parts of silver-loaded viscose fibers with the silver content of 4 percent, 35 parts of sheath-core structure type polyester staple fibers with the melting point of 110 ℃, the fineness of 2D and the length of 51mm, 45 parts of three-dimensional curled hollow polyester staple fibers with the fineness of 0.5D and the length of 51mm and 2 parts of bamboo charcoal powder.
The preparation method of this example includes the following steps:
s1, weighing the components in parts by weight, uniformly mixing silver-loaded viscose fibers, three-dimensional curled hollow polyester staple fibers, bamboo charcoal powder and half of low-melting-point polyester staple fibers in parts by weight, and then opening to obtain mixed fibers;
s2, preparing the mixed fibers obtained in the step S1 into fiber webs by a mechanical carding and web forming method;
s3, adding the fiber web obtained in the step S2 into a vertical lapping machine, simultaneously scattering the rest low-melting-point polyester staple fibers between the fiber webs, and vertically lapping to obtain lapping cotton, wherein the lapping width is 180 mm;
s4, placing the lapping cotton obtained in the step S3 in a drying tunnel at 125 ℃, baking for 5 minutes, taking out and cooling to room temperature;
and S5, cutting off the irregular part on the edge of the lapping cotton cooled to room temperature in the step S4, and punching after cutting to obtain the non-woven cotton dressing for negative pressure drainage.
Reference example 1: the difference from example 3 is that: the preparation method adopts a plane lapping mode, and the structure of the prepared dressing is in a plane fiber shape.
Reference example 2: the difference from example 3 is that: the silver-loaded viscose fibers are not included in the composition.
Reference example 3: the difference from example 3 is that: the bamboo charcoal powder is not included in the composition.
Comparative example 1: example 1 of chinese patent application No. CN 201310040429.9.
Comparative example 2: a dressing made of ordinary non-woven fabric.
The first test example: air permeability test
Examples 1 to 4, reference examples 1 to 3, and comparative examples 1 to 2 were each tested for gas permeability. The test results are shown in table 1:
TABLE 1
As can be seen from Table 1, examples 1-4 of the present invention all had significantly better air permeability than comparative examples 1-2. The parts of the components or the preparation methods of reference examples 1 to 3 are different from those of example 3, the air permeability of reference examples 1 and 3 is reduced, and the vertical structure formed by vertical lapping and the bamboo charcoal powder can effectively improve the air permeability of the non-woven cotton dressing for negative pressure drainage.
Test example two: rebound resilience test
Examples 1 to 4, reference examples 1 to 3, and comparative examples 1 to 2 were each tested for resilience after compression of 5% and resilience after storage for 3 months. The test results are shown in table 2:
| rebound resilience (%) | Rebound Rate after 3 months of storage (%) | |
| Example 1 | 94 | 94 |
| Example 2 | 93.5 | 93.5 |
| Example 3 | 95 | 95 |
| Example 4 | 93 | 93 |
| Reference example 1 | 76 | 67 |
| Reference example 2 | 95 | 95 |
| Reference example 3 | 95 | 95 |
| Comparative example 1 | 92 | 86 |
| Comparative example 2 | 65-70 | 55-60 |
TABLE 2
As can be seen from Table 2, the rebound resilience of inventive examples 1-4 and the rebound resilience after 3 months of storage are both significantly better than that of comparative example 2, the rebound resilience of comparative example 1 is not much different from that of inventive examples 1-4, but the rebound resilience after 3 months of storage is not reduced much, while the rebound resilience of inventive examples 1-4 after 3 months of storage is not changed, which indicates that the invention has better rebound resilience and stability. The components of reference examples 1 to 3 or the preparation method thereof are different from example 3, and the rebound resilience of reference example 1 and the rebound resilience after 3 months of storage are reduced, which indicates that the upright structure formed by vertical lapping is a main factor for improving the rebound resilience and stability of the nonwoven cotton dressing for negative pressure drainage.
Test example three: yellowing test
The initial yellowness index of examples 1 to 4 and comparative examples 1 to 2 and the yellowness index after 3 months of storage were respectively tested, and the yellowness index change rate, which is (yellowness index after 3 months of storage-initial yellowness index)/initial yellowness index × 100%, was calculated. Lower yellowness index change rates indicate less yellowing and the test results are shown in table 3:
| yellow index Change Rate (%) | |
| Example 1 | 0.34 |
| Example 2 | 0.36 |
| Example 3 | 0.33 |
| Example 4 | 0.35 |
| Comparative example 1 | 8.21 |
| Comparative example 2 | 1.47 |
TABLE 3
As can be seen from Table 3, the change rates of the yellowness indexes of the inventive examples 1 to 4 are significantly lower than those of the comparative examples 1 to 2, indicating that the yellowing degree of the present invention is very small, nearly no yellowing.
Test example four: test of antibacterial Property
The antibacterial ratio against E.coli of examples 1 to 4 and reference examples 1 to 3 and the antibacterial ratio after 3 months of storage were measured, respectively. The test results are shown in table 4:
TABLE 4
As can be seen from Table 4, the antibacterial rates of examples 1 to 4 of the present invention are all very high, and the decrease degree of the antibacterial rate after 3 months of storage is very small, indicating that the present invention has good antibacterial performance and antibacterial durability. The components or preparation methods of reference examples 1 to 3 are different from those of example 3, the antibacterial rate of reference example 2 is greatly reduced, which indicates that the silver-loaded viscose fiber is the main factor for improving the antibacterial performance of the non-woven cotton dressing for negative pressure drainage, the antibacterial rate of reference example 3 is reduced in a small range, and the antibacterial rate after 3 months of storage is obviously reduced, which indicates that the bamboo charcoal powder can effectively improve the compatibility and the binding property between the silver-loaded viscose fiber and other fibers.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a cotton dressing of non-woven for negative pressure drainage which characterized in that: the composition is prepared from the following components in parts by weight: 15-20 parts of silver-loaded viscose fiber, 15-35 parts of low-melting-point polyester staple fiber, 45-65 parts of three-dimensional crimped hollow polyester staple fiber and 1-2 parts of bamboo charcoal powder.
2. The non-woven cotton dressing for negative pressure drainage according to claim 1, characterized in that: the silver content of the silver-loaded viscose fiber is 4%.
3. The non-woven cotton dressing for negative pressure drainage according to claim 1, characterized in that: the low-melting-point polyester staple fiber is a sheath-core structure polyester staple fiber with the melting point of 110 ℃, the fineness of 2D and the length of 51 mm.
4. The non-woven cotton dressing for negative pressure drainage according to claim 1, characterized in that: the three-dimensional crimped hollow polyester staple fiber has the fineness of 0.5D and the length of 51 mm.
5. The method for preparing the non-woven cotton dressing for negative pressure drainage according to any one of claims 1 to 4, which is characterized in that: the method comprises the following steps:
s1, weighing the components in parts by weight, uniformly mixing silver-loaded viscose fibers, three-dimensional curled hollow polyester staple fibers, bamboo charcoal powder and half of low-melting-point polyester staple fibers in parts by weight, and then opening to obtain mixed fibers;
s2, preparing the mixed fibers obtained in the step S1 into fiber webs by a mechanical carding and web forming method;
s3, adding the fiber web obtained in the step S2 into a vertical lapping machine, simultaneously scattering the remaining low-melting-point polyester staple fibers between the fiber webs, and vertically lapping to obtain lapping cotton;
s4, placing the lapping cotton obtained in the step S3 into a drying tunnel, baking for 5-10 minutes, taking out, and cooling to room temperature;
and S5, cutting off the irregular part on the edge of the lapping cotton cooled to room temperature in the step S4, and punching after cutting to obtain the non-woven cotton dressing for negative pressure drainage.
6. The method for preparing the non-woven cotton dressing for negative pressure drainage according to claim 5, which is characterized in that: in the step S3, the lapping width during vertical lapping is 100-200 mm.
7. The method for preparing the non-woven cotton dressing for negative pressure drainage according to claim 5, which is characterized in that: in the step S4, the temperature in the drying tunnel is 100-125 ℃.
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