CN106178071A - A kind of superabsorbent water dressing and preparation method thereof - Google Patents
A kind of superabsorbent water dressing and preparation method thereof Download PDFInfo
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- CN106178071A CN106178071A CN201510233617.2A CN201510233617A CN106178071A CN 106178071 A CN106178071 A CN 106178071A CN 201510233617 A CN201510233617 A CN 201510233617A CN 106178071 A CN106178071 A CN 106178071A
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Abstract
The present invention relates to a kind of superabsorbent water dressing and preparation method thereof.Described dressing has simple in construction, preparation technology simplification, low cost, water absorption and lock water excellent performance and the high feature of mechanical strength, it still can take out after imbibition smoothly, there is not the problem in wound of staying because of insufficient strength, be particularly suitable for actual application and Industry Promotion.
Description
Technical field
The present invention relates to pharmaceutical technology field, more particularly to a kind of superabsorbent water dressing and preparation method thereof.
Background technology
In general daily life, often meet with all kinds of hemorrhagic wound, for minor cut or wound directly by wound
Wound can be affixed on, big wound is then needed to be cleaned a wound by the medical worker of hospital, and carries out
Sterilization, then wraps up with gauze, or sticks all kinds of applying ointment or plaster.But dressing of the prior art such as adhesive bandage,
Gauze or apply ointment or plaster etc. owing to water absorption and lock aqueous are not satisfactory, often occurs when bleeding amount of wound is bigger
Blood passes through gauze or the seepage situation applied ointment or plaster, and sepage is back to wound can cause wound superinfection, and
Owing to its mechanical strength is relatively low, dressing is irregularly ruptured or the residue of dressing is stayed on wound or wound
In, need to rinse with normal saline secondary.
Specifically, United States Patent (USP) US6458460 discloses a kind of wound dressing, two kinds of colloidal sol fibers be blended
Forming, one is carboxymethyl cellulose fiber, and another kind is alginic acid fibre, to promote moisture pick-up properties and to reach
To the optimum efficiency absorbing wound exudate.Chinese patent ZL 200680053980 discloses another wound
Dressing, is made up of the first absorbed layer, the second absorbed layer and the bonding third layer being mixed in centre, first,
Two layers are made up of non-woven fabrics viscose rayon and polyester fiber, and third layer is cotton cloth form.Chinese patent CN
201310179919 medical dressing disclosing a kind of MULTILAYER COMPOSITE, employing spun lacing reinforcement technique is made upper strata and is
Functional layer, intermediate layer be water accepting layer, lower floor be the three-layered lamination body of protective layer, and protective layer is coated with waterproofing agent
Form waterproof layer.The dressing of this patent has good biocompatibility, and rush heals, bacteriostasis rate is up to 96.7%,
Pick up is up to 1259%, and classification of waterproof is up to 5 grades.Chinese patent CN 201310728101 discloses one
Planting the wound dressing containing treble cloths, the first outer fabric, the second outer fabric and intermediate fibrous layers are knitted
Thing, this dressing has humectant, can absorb substantial amounts of wound fluid and well pin be absorbed into
The wound fluid of intermediate fibrous layers, prevents transudate to be back to wound and causes wound superinfection.China is specially
Profit CN 201410063087 discloses a kind of superabsorbent fiber medical dressing, and nexine is superabsorbent fiber material,
Outer layer is sky wire material, is integrally formed dressing by being pasted into, and this patent only word describes the dressing of invention
There are excellent antibacterial, antibacterial, antiinflammatory, hemostatic function, absorb sepage ability strong, can be waterproof, and have
Superpower moisture-inhibiting, breathability, but do not have concrete data to confirm the effect being had, and sky wire material is than it
The cost of his general fibre exceeds many times, and separately because of double-decker, technique is more complicated.Nantong University " non-is knitting
Make cloth " deliver " exploitation of superabsorbent water Nonwoven Medical Dressings " on periodical, raw material is superabsorbent fiber
(SAF), chitin fiber, ES fiber (the skin-core structure fiber produced by polyethylene and polypropylene fusion),
The cost of chitin fiber is much more expensive；" fabrics for industrial use " periodical delivers " multicomponent is non-woven
The exploitation of medical dressing ", nexine is kapok, SAF fiber, acid fiber by polylactic (PLA), and top layer is poly-third
Alkene fiber and fiber crops Sai Er fiber, more compound after heat bonding, its component contains 5 kinds of fibers altogether, and technique is the most multiple
Miscellaneous；" Nantong University's journal (natural science edition) " periodical delivers " development of Nonwoven Medical Dressings ",
Raw material is SAF fiber, chitin fiber, 3-hydroxybutyrate ester (PHB), chitin fiber and PHB
The market price the most costly, there is bigger resistance in industrialization.
Therefore, the water absorption of existing dressing, lock aqueous, mechanical strength etc. are not highly desirable, it is impossible to meet
Practical application request, and have that structure is complicated, preparation technology is loaded down with trivial details, high in cost of production is not enough, this seriously limits
Its industrialization process.
In sum, this area in the urgent need to develop a kind of novel simple in construction, technique simplification, low cost,
The dressing that water absorption is high with lock water excellent performance and mechanical strength.
Summary of the invention
It is an object of the invention to provide a kind of novel simple in construction, technique simplification, low cost, water absorption
Dressing high with lock water excellent performance and mechanical strength and preparation method thereof.
A first aspect of the present invention, it is provided that a kind of superabsorbent water dressing, described dressing has a lower stack features:
(a-1) described dressing has monolayer layer structure, and the thickness of described dressing is 0.2-5mm；
(a-2) described dressing contains the first fiber and the second fiber, and wherein, described first fiber is SAF fiber,
And described second fiber is selected from lower group: viscose rayon, polypropylene fiber, vinylon fibre, PLA fiber, bamboo pulp
Fiber or a combination thereof；
(a-3) weight part ratio of described first fiber and described second fiber is 20-95:5-80；
(a-4) fiber number of described first fiber is 5-20D, and a length of 35-100mm of described first fiber；
(a-5) fiber number of described second fiber is 0.1-4D, and a length of 5-60mm of described second fiber.
In another preference, the weight per unit area of described dressing is 30-300g/m2；And/or
The horizontal wet ultimate strength of described dressing is 2-100N/5cm；And/or
The longitudinal wet ultimate strength of described dressing is 2.5-70N/5cm.
In another preference, the weight per unit area of described dressing is 70-280g/m2, preferably 80-260
g/m2, it is more preferably 90-250g/m2。
In another preference, the horizontal wet ultimate strength of described dressing is 5-80N/5cm, preferably 8
-60N/5cm, is more preferably 9-45N/5cm.
In another preference, the longitudinal wet ultimate strength of described dressing is 3-55N/5cm, preferably
3.5-40N/5cm, it is more preferably 4-25N/5cm.
In another preference, the wet ultimate strength isotropism of described dressing.
In another preference, the horizontal wet ultimate strength of described dressing is strong with the longitudinal wet fracture of described dressing
The ratio of power is 0.5-5, preferably 0.6-4, is more preferably 0.7-3.5.
In another preference, the thickness of described dressing is 0.5-3mm, preferably 0.8-2.5mm, more preferably
Ground is 1.3-2.2mm.
In another preference, described dressing thickness is uniform.
In another preference, described " uniformly " refers to the thickness at described dressing any position and described dressing
The ratio of average thickness is 0.7-1.3, preferably 0.8-1.2, is more preferably 0.9-1.1.
In another preference, in described dressing, described first fiber and the total content >=80wt% of the second fiber,
Preferably >=90wt%, more preferably >=95wt%, most preferably >=99wt%.
In another preference, in described dressing, the total content of described first fiber and the second fiber is 100wt%.
In another preference, described SAF fiber is selected from lower group: sodium polyacrylate fiber, polyacrylonitrile are fine
Dimension, vinal or a combination thereof.
In another preference, described SAF fiber is sodium polyacrylate fiber.
In another preference, in described dressing, described first fiber and the weight part ratio of described second fiber
For 30-95:5-70.
In another preference, in described dressing, described first fiber and the weight part ratio of described second fiber
For 40-90:10-60, preferably 50-85:15-50, it is more preferably 55-85:15-45.
In another preference, the fiber number of described first fiber is 6-18D, preferably 6.5-16D, more
Goodly for 7-15D.
In another preference, a length of 40-80mm of described first fiber, preferably 45-70mm,
It is more preferably 50-65mm.
In another preference, the fiber number of described second fiber is 0.3-3.5D, preferably 0.5-3.2D,
It is more preferably 0.8-2.8D.
In another preference, a length of 10-55mm of described second fiber, preferably 15-45mm,
It is more preferably 18-38mm.
In another preference, in described dressing, described first fiber in the density of arbitrary unit are with described
The ratio of first fiber average density in whole dressing is 0.7-1.3；And/or
Described second fiber is at the closeest in whole dressing of density and described second fiber of arbitrary unit are
The ratio of degree is 0.7-1.3.
In another preference, described first fiber average density in whole dressing is 0.7-1.3g/m2,
Preferably 0.8-1.2g/m2, it is more preferably 0.9-1.1g/m2。
In another preference, described second fiber average density in whole dressing is 0.7-1.3g/m2,
Preferably 0.8-1.2g/m2, it is more preferably 0.9-1.1g/m2。
In another preference, described first fiber is uniformly distributed in described dressing.
In another preference, described " being uniformly distributed " refers to described first fiber density in arbitrary unit are
It is 0.7-1.3, preferably 0.8-1.2 with the ratio of described first fiber average density in whole dressing,
It is more preferably 0.9-1.1.
In another preference, described second fiber is uniformly distributed in described dressing.
In another preference, described " being uniformly distributed " refers to described second fiber density in arbitrary unit are
It is 0.7-1.3, preferably 0.8-1.2 with the ratio of described second fiber average density in whole dressing,
It is more preferably 0.9-1.1.
In another preference, described dressing has one or more features selected from lower group:
(b-1) multiplying power inhaling distilled water of described dressing is 30-500g/g；
In another preference, the multiplying power inhaling distilled water of described dressing is 32-400g/g, preferably
34-300g/g, is more preferably 36-250g/g, is more preferably 36-200g/g, is most preferably 38-100g/g.
(b-2) multiplying power of the sorptivety liquid of described dressing is 20-300g/g；
In another preference, the multiplying power of the sorptivety liquid of described dressing is 23-200g/g, preferably 25-150
G/g, is more preferably 28-100g/g, is more preferably 29-80g/g, is most preferably 29-60g/g.
(b-3) described dressing is 28-400g/g to the moisture holding capacity of distilled water；
In another preference, described dressing is 29-300g/g to the moisture holding capacity of distilled water, preferably
35-200g/g, is more preferably 40-160g/g, is most preferably 45-100g/g.
(b-4) described dressing is 14-100mm/5min to the horizontal vertical wicking speed of distilled water；
In another preference, described dressing is 15-to the horizontal vertical wicking speed of distilled water
80mm/5min, preferably 18-60mm/5min, be more preferably 20-40mm/5min.
(b-5) described dressing is 5-80mm/5min to the longitudinally perpendicular wicking rate of distilled water；
In another preference, described dressing is 10-to the longitudinally perpendicular wicking rate of distilled water
60mm/5min, preferably 12-50mm/5min, be more preferably 13-40mm/5min.
In another preference, described dressing is medical grade.
In another preference, the test condition of the performance of described dressing is as described in universal testing method part.
In another preference, described dressing uses method described in second aspect present invention to prepare.
A second aspect of the present invention, it is provided that the preparation method of the dressing described in a kind of first aspect present invention,
Comprise the steps:
(c-1) the first fiber and the second fiber be provided, wherein,
Described first fiber is SAF fiber；
Described second fiber is selected from lower group: viscose rayon, polypropylene fiber, vinylon fibre, PLA fiber, bamboo
Pulp fibres or a combination thereof；
(c-2) the first fiber and described second fiber described in opener shredding respectively is used；
(c-3) use and feed described first fiber through shredding and described the of cotton machine blend step (c-2) gained
Two fibers, obtain the first composite fibre；
(c-4) use carding machine combing step (c-3) described first composite fibre, obtain second through combing
Composite fibre；
(c-5) use lapping machine second composite fibre described to step (c-4) to carry out lapping, obtain primary applying
Material；
(c-6) use needing machine primary dressing described to step (c-5) to carry out acupuncture, obtain the present invention first
Dressing described in aspect.
In another preference, after step (c-6), the most optionally comprise the steps: winding and/or cut out
Cut and/or plate dressing described in post processing.
In another preference, in step (c-3) gained the first composite fibre, described first fiber and described
The weight part ratio of the second fiber is 20-95:5-80.
In another preference, shredding time of step (c-2) described opener so that described first fiber and
It is standard that described second fiber reaches maximum fluffy state.
In another preference, the combing cylinder speed of step (c-4) described carding machine is that 100-350 turns
/min。
In another preference, the combing cylinder speed of step (c-4) described carding machine is that 120-300 turns
/ min, preferably 160-290 turn/min, more preferably turn/min for 200-280.
In another preference, step (c-5) described lapping is square crossing lapping.
In another preference, the thickness of the described primary dressing of step (c-5) is 15-35mm.
In another preference, step (c-6) described acupuncture includes pre-needling and main acupuncture, and pre-needling frequency
Rate and main punch frequency are than for 8-12:6-15.
In another preference, described pre-needling frequency and main punch frequency are than for 9-11:7-13, preferably
For 9-10:9-13, it is more preferably 10:10-13.
In another preference, the described thickness through the primary dressing of pre-needling is 15-35mm, preferably
18-30mm, is more preferably 20-25mm.
In another preference, the described thickness through the primary dressing of main acupuncture is 0.5-3mm, preferably
0.8-2.5mm, is more preferably 1.3-2.2mm.
In another preference, the needling direction of described pre-needling and described main acupuncture is contrary.
In another preference, described pre-needling needling direction is from top to bottom.
In another preference, described main acupuncture needling direction is from bottom to top.
In another preference, the draw ratio of described pre-needling is 1:1.01-3；And/or
The draw ratio of described main acupuncture is 1:1.01-2.8.
In another preference, the draw ratio of described pre-needling is 1:1.05-2.5, preferably 1:1.1-2,
It is more preferably 1:1.3-1.8.
In another preference, the draw ratio of described main acupuncture is 1:1.01-2.3, preferably 1:1.1-2,
It is more preferably 1:1.2-1.6.
In another preference, the needling density of described pre-needling is 50-400 pin/cm2, preferably 100
-300 pins/cm2, it is more preferably 150-250 pin/cm2。
In another preference, the needling density of described main acupuncture is 50-400 pin/cm2, preferably 150
-350 pins/cm2, it is more preferably 200-300 pin/cm2。
In another preference, the time of described pre-needling is 5-40s, preferably 10-30s, more preferably
For 15-25s.
In another preference, the time of described main acupuncture is 10-50s, preferably 20-40s, more preferably
Ground is 25-35s.
In another preference, the pricker that described pre-needling uses is 38-42 pin, preferably 40-42
Number pin, is more preferably No. 40 pins.
In another preference, the pricker that described main acupuncture uses is 38-44 pin, preferably 40-44
Number pin, is more preferably 42-44 pin.
In another preference, the pin number of the pricker of described main acupuncture and the pin number of the pricker of described pre-needling it
Difference Δ≤6, preferably Δ≤4, more preferably Δ≤2.
A third aspect of the present invention, it is provided that the purposes of the dressing described in a kind of first aspect present invention, is used for making
Standby medical apparatus and instruments or hygienic article.
A fourth aspect of the present invention, it is provided that a kind of goods, described goods comprise described in first aspect present invention
Dressing or be made up of the dressing described in first aspect present invention.
In another preference, described goods are selected from lower group: medical apparatus and instruments, hygienic article, facial film or its group
Close.
In another preference, described medical apparatus and instruments be selected from lower group: adhesive bandage, Mattress with function of preventing bed-sore, medical absorbents,
Or a combination thereof.
In another preference, described hygienic article is sanitary belt.
In should be understood that within the scope of the present invention, above-mentioned each technical characteristic of the present invention and below (as implemented
Example) in can be combined with each other between each technical characteristic of specifically describing, thus constitute new or preferred skill
Art scheme.As space is limited, the most tired at this state.
Detailed description of the invention
The present inventor is through long-term and in-depth study, by adjusting the composition of dressing and preparation technology unexpectedly
It is prepared for one not only water absorbing properties and water retention property is excellent, and the new pattern compress that mechanical strength is the highest.
Specifically, the present inventor is by using the fibrous raw material of ad hoc structure and composition to make under specific needling process
The standby new pattern compress obtaining a kind of water absorbing properties, water retention property, fracture strength and wicking properties with excellence,
Described dressing can effectively absorb sepage and the sepage that absorbed will not occur inversely to ooze out, even if there being a depthkeeping
In the wound of degree, such as sinus tract or the wound that moves under water, still dressing can be taken out smoothly after imbibition, not exist because of dressing
Insufficient strength and stay the problem in wound.Additionally, described dressing is prone to from wound remove after a procedure,
Will not stick together and remain, be more not result in second hurt.And, described dressing have simple in construction,
Preparation technology simplifies and the advantage of low cost.On this basis, inventor completes the present invention.
Term
As used herein, term " acupuncture draw ratio " refers to input in needing machine rotating speed and the delivery roller of roller
The ratio of rotating speed, i.e. draw ratio=VEnter/VGo out。
Dressing
The invention provides a kind of superabsorbent water dressing, described dressing has a lower stack features:
(a-1) described dressing has monolayer layer structure, and the thickness of described dressing is 0.2-5mm；
(a-2) described dressing contains the first fiber and the second fiber, and wherein, described first fiber is SAF fiber,
And described second fiber is selected from lower group: viscose rayon, polypropylene fiber, vinylon fibre, PLA fiber, bamboo pulp
Fiber or a combination thereof；
(a-3) weight part ratio of described first fiber and described second fiber is 20-95:5-80；
(a-4) fiber number of described first fiber is 5-20D, and a length of 35-100mm of described first fiber；
(a-5) fiber number of described second fiber is 0.1-4D, and a length of 5-60mm of described second fiber.
In the present invention, the weight per unit area of described dressing is 30-300g/m2；And/or
The horizontal wet ultimate strength of described dressing is 2-100N/5cm；And/or
The longitudinal wet ultimate strength of described dressing is 2.5-70N/5cm.
In another preference, the weight per unit area of described dressing is 70-280g/m2, preferably 80-260
g/m2, it is more preferably 90-250g/m2。
In another preference, the horizontal wet ultimate strength of described dressing is 5-80N/5cm, preferably 8
-60N/5cm, is more preferably 9-45N/5cm.
In another preference, the longitudinal wet ultimate strength of described dressing is 3-55N/5cm, preferably
3.5-40N/5cm, it is more preferably 4-25N/5cm.
In another preference, the wet ultimate strength isotropism of described dressing.
In another preference, the horizontal wet ultimate strength of described dressing is strong with the longitudinal wet fracture of described dressing
The ratio of power is 0.5-5, preferably 0.6-4, is more preferably 0.7-3.5.
In another preference, the thickness of described dressing is 0.5-3mm, preferably 0.8-2.5mm, more preferably
Ground is 1.3-2.2mm.
In another preference, described dressing thickness is uniform.
In another preference, described " uniformly " refers to the thickness at described dressing any position and described dressing
The ratio of average thickness is 0.7-1.3, preferably 0.8-1.2, is more preferably 0.9-1.1.
In another preference, in described dressing, described first fiber and the total content >=80wt% of the second fiber,
Preferably >=90wt%, more preferably >=95wt%, most preferably >=99wt%.
In another preference, in described dressing, the total content of described first fiber and the second fiber is 100wt%.
In the present invention, described SAF fiber, viscose rayon, polypropylene fiber, vinylon fibre, PLA fiber,
Bamboo pulp fiber is not particularly limited, and can need to select the various fibers of this area routine according to reality application.
Typically, described SAF fiber includes (but being not limited to): sodium polyacrylate fiber, polypropylene
Nitrile fiber, vinal or a combination thereof.
Typically, described SAF fiber is sodium polyacrylate fiber.
In the present invention, weight part ratio, fiber number and the length of described first fiber and described second fiber does not has
Limit especially, can need in very large range to be changed according to reality application.
In another preference, in described dressing, described first fiber and the weight part ratio of described second fiber
For 30-95:5-70.
In another preference, in described dressing, described first fiber and the weight part ratio of described second fiber
For 40-90:10-60, preferably 50-85:15-50, it is more preferably 55-85:15-45.
In another preference, the fiber number of described first fiber is 6-18D, preferably 6.5-16D, more
Goodly for 7-15D.
In another preference, a length of 40-80mm of described first fiber, preferably 45-70mm,
It is more preferably 50-65mm.
In another preference, the fiber number of described second fiber is 0.3-3.5D, preferably 0.5-3.2D,
It is more preferably 0.8-2.8D.
In another preference, a length of 10-55mm of described second fiber, preferably 15-45mm,
It is more preferably 18-38mm.
In another preference, in described dressing, described first fiber in the density of arbitrary unit are with described
The ratio of first fiber average density in whole dressing is 0.7-1.3；And/or
Described second fiber is at the closeest in whole dressing of density and described second fiber of arbitrary unit are
The ratio of degree is 0.7-1.3.
In another preference, described first fiber average density in whole dressing is 0.7-1.3g/m2,
Preferably 0.8-1.2g/m2, it is more preferably 0.9-1.1g/m2。
In another preference, described second fiber average density in whole dressing is 0.7-1.3g/m2,
Preferably 0.8-1.2g/m2, it is more preferably 0.9-1.1g/m2。
In another preference, described first fiber is uniformly distributed in described dressing.
In another preference, described " being uniformly distributed " refers to described first fiber density in arbitrary unit are
It is 0.7-1.3, preferably 0.8-1.2 with the ratio of described first fiber average density in whole dressing,
It is more preferably 0.9-1.1.
In another preference, described second fiber is uniformly distributed in described dressing.
In another preference, described " being uniformly distributed " refers to described second fiber density in arbitrary unit are
It is 0.7-1.3, preferably 0.8-1.2 with the ratio of described second fiber average density in whole dressing,
It is more preferably 0.9-1.1.
In another preference, described dressing has one or more features selected from lower group:
(b-1) multiplying power inhaling distilled water of described dressing is 30-500g/g；
In another preference, the multiplying power inhaling distilled water of described dressing is 32-400g/g, preferably
34-300g/g, is more preferably 36-250g/g, is more preferably 36-200g/g, is most preferably 38-100g/g.
(b-2) multiplying power of the sorptivety liquid of described dressing is 20-300g/g；
In another preference, the multiplying power of the sorptivety liquid of described dressing is 23-200g/g, preferably 25-150
G/g, is more preferably 28-100g/g, is more preferably 29-80g/g, is most preferably 29-60g/g.
(b-3) described dressing is 28-400g/g to the moisture holding capacity of distilled water；
In another preference, described dressing is 29-300g/g to the moisture holding capacity of distilled water, preferably
35-200g/g, is more preferably 40-160g/g, is most preferably 45-100g/g.
(b-4) described dressing is 14-100mm/5min to the horizontal vertical wicking speed of distilled water；
In another preference, described dressing is 15-to the horizontal vertical wicking speed of distilled water
80mm/5min, preferably 18-60mm/5min, be more preferably 20-40mm/5min.
(b-5) described dressing is 5-80mm/5min to the longitudinally perpendicular wicking rate of distilled water；
In another preference, described dressing is 10-to the longitudinally perpendicular wicking rate of distilled water
60mm/5min, preferably 12-50mm/5min, be more preferably 13-40mm/5min.
In another preference, described dressing is medical grade.
In another preference, the test condition of the performance of described dressing is as described in universal testing method part.
In another preference, described dressing uses method described in second aspect present invention to prepare.
In the present invention, the feature that SAF fiber self exists has that water absorption is big, good water-retaining property, ultimate strength
Low, extension at break is little, intensity and elongation in polydispersity, surface is more smooth, the most not curling etc..
Second fiber of the present invention is possible not only to strengthen the mechanical strength of gained dressing, it is also possible to a certain degree
The water absorption of upper raising gained dressing and/or vertical wicking speed, and institute can also be improved to a certain extent
Obtain the bacteriostasis property of dressing.
Dressing of the present invention is the acupuncture dressing form of lint, in use will not fall wadding.
Preparation method
Present invention also offers the preparation method of a kind of described dressing, comprise the steps:
(c-1) the first fiber and the second fiber be provided, wherein,
Described first fiber is SAF fiber；
Described second fiber is selected from lower group: viscose rayon, polypropylene fiber, vinylon fibre, PLA fiber, bamboo
Pulp fibres or a combination thereof；
(c-2) the first fiber and described second fiber described in opener shredding respectively is used；
(c-3) use and feed described first fiber through shredding and described the of cotton machine blend step (c-2) gained
Two fibers, obtain the first composite fibre；
(c-4) use carding machine combing step (c-3) described first composite fibre, obtain second through combing
Composite fibre；
(c-5) use lapping machine second composite fibre described to step (c-4) to carry out lapping, obtain primary applying
Material；
(c-6) use needing machine primary dressing described to step (c-5) to carry out acupuncture, obtain described dressing.
In another preference, after step (c-6), the most optionally comprise the steps: winding and/or cut out
Cut and/or plate dressing described in post processing.
In another preference, in step (c-3) gained the first composite fibre, described first fiber and described
The weight part ratio of the second fiber is 20-95:5-80.
In another preference, shredding time of step (c-2) described opener so that described first fiber and
It is standard that described second fiber reaches maximum fluffy state.
In another preference, the combing cylinder speed of step (c-4) described carding machine is that 100-350 turns
/min。
In another preference, the combing cylinder speed of step (c-4) described carding machine is that 120-300 turns
/ min, preferably 160-290 turn/min, more preferably turn/min for 200-280.
In another preference, step (c-5) described lapping is square crossing lapping.
In another preference, the thickness of the described primary dressing of step (c-5) is 15-35mm.
In the present invention, step (c-6) described acupuncture includes pre-needling and main acupuncture, and pre-needling frequency and
Main punch frequency is than for 8-12:6-15.
In another preference, described pre-needling frequency and main punch frequency are than for 9-11:7-13, preferably
For 9-10:9-13, it is more preferably 10:10-13.
In another preference, the described thickness through the primary dressing of pre-needling is 15-35mm, preferably
18-30mm, is more preferably 20-25mm.
In another preference, the described thickness through the primary dressing of main acupuncture is 0.5-3mm, preferably
0.8-2.5mm, is more preferably 1.3-2.2mm.
In the present invention, the needling direction of described pre-needling and described main acupuncture is contrary.
Typically, described pre-needling needling direction is from top to bottom.
Typically, described main acupuncture needling direction is from bottom to top.
In the present invention, the draw ratio of described pre-needling and the draw ratio of described main acupuncture are not particularly limited,
Can need in very large range to be adjusted according to reality application.
Generally, the draw ratio of described pre-needling is 1:1.01-3；And/or
The draw ratio of described main acupuncture is 1:1.01-2.8.
In another preference, the draw ratio of described pre-needling is 1:1.05-2.5, preferably 1:1.1-2,
It is more preferably 1:1.3-1.8.
In another preference, the draw ratio of described main acupuncture is 1:1.01-2.3, preferably 1:1.1-2,
It is more preferably 1:1.2-1.6.
In the present invention, the needling density of described pre-needling and the needling density of described main acupuncture limit the most especially
System, can need in very large range to be adjusted according to reality application.
In another preference, the needling density of described pre-needling is 50-400 pin/cm2, preferably 100
-300 pins/cm2, it is more preferably 150-250 pin/cm2。
In another preference, the needling density of described main acupuncture is 50-400 pin/cm2, preferably 150
-350 pins/cm2, it is more preferably 200-300 pin/cm2。
In the present invention, the time of described pre-needling and the time of described main acupuncture are not particularly limited, can root
Border application needs in very large range to be adjusted factually.
In another preference, the time of described pre-needling is 5-40s, preferably 10-30s, more preferably
For 15-25s.
In another preference, the time of described main acupuncture is 10-50s, preferably 20-40s, more preferably
Ground is 25-35s.
In the present invention, the pin of the pricker that the pin number of the pricker that described pre-needling uses uses with described main acupuncture
Number it is not particularly limited, can need in very large range to be adjusted according to reality application.
Typically, the pricker that described pre-needling uses is 38-42 pin, preferably 40-42 pin, more
It is No. 40 pins goodly.
Typically, the pricker that described main acupuncture uses is 38-44 pin, preferably 40-44 pin, more
Goodly for 42-44 pin.
In the present invention, the difference Δ of the pin number of the pricker of described main acupuncture and the pin number of the pricker of described pre-needling
≤ 6, preferably Δ≤4, more preferably Δ≤2.
In the present invention, described opener, hello cotton machine, carding machine, lapping machine and needing machine limit the most especially
System, is commercial instruments, and its specification and configuration can the most in very large range be adjusted.
Application
Present invention also offers the purposes of a kind of described dressing, be used for preparing medical apparatus and instruments or hygienic article.
Present invention also offers a kind of goods, described goods comprise described dressing or are made up of described dressing.
Typically, described goods include (but being not limited to): medical apparatus and instruments, hygienic article, facial film or
A combination thereof.
Typically, described medical apparatus and instruments includes (but being not limited to): adhesive bandage, Mattress with function of preventing bed-sore, medical absorbent
Pad or a combination thereof.
Typically, described hygienic article includes (but being not limited to) sanitary belt.
Compared with prior art, the present invention has a following major advantage:
(1) described dressing structure is simple, preparation technology is simple, low cost of manufacture, be easy to industrialization；
(2) described dressing has water absorbing properties, water retention property, wicking rate and the mechanical strength of excellence；
(3) described dressing will not can avoid second hurt with wound adhesion；
(4) the most do not fall wadding, can avoid again cleaning a wound with normal saline after removing dressing.
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments are merely to illustrate
The present invention rather than restriction the scope of the present invention.The experimental technique of unreceipted actual conditions in the following example is logical
Often according to normal condition or according to the condition proposed by manufacturer.Unless otherwise indicated, otherwise percentage ratio and number
Calculate by weight.
Unless otherwise defined, all specialties used in literary composition are familiar with one skilled in the art with scientific words
Same meaning.Additionally, any method similar or impartial to described content and material all can be applicable to the present invention
In method.Preferable implementation described in literary composition only presents a demonstration with material and is used.
Raw material
1.SAF fiber
Nantong Jiang Chao fibre company limited, technical Absorbents Co., Ltd
Length 40-60mm, fiber number 5D-15D, dry fracture strength 0.3-1cN/d
2. viscose rayon
Lenzin (Nanjing) fiber company limited, Xingda Tangshan Sanyou Group Chemical Fiber Co
Length 30-50mm, fiber number 1-2D, dry fracture strength 1.5-4cN/d
3. polypropylene fiber
Hubei Bo Taohexian company limited
Length 30-50mm, fiber number 1-3D, dry fracture strength 1-3cN/d
4. vinylon fibre
Shunda textile raw material company limited of Xinghua County
Length 25-45mm, fiber number 1-2D, dry fracture strength 2-10cN/d
5.PLA fiber
Shanghai Tongjieliang Biomaterial Co., Ltd.
Length 25-55mm, fiber number 1-2D, dry fracture strength 2-8cN/d
6. bamboo pulp fiber
Xingda Tangshan Sanyou Group Chemical Fiber Co
Length 25-50mm, fiber number 0.5-3D, dry fracture strength 1.5-5cN/d
Universal testing method
1, surface density: GB/T 24218.1-2009 non-weaving cloth test method part 1: unit are matter
The mensuration of amount
2, liquid absorbtivity (water absorption, liquid absorption): YY/T 0471.1-2004 contact Wound dressing tries
Proved recipe method part 1: liquid-absorbent
3, moisture holding capacity: the medical non-woven compress test method part 2 of YY/T 0472.2-2004: finished product applies
Cloth appendix A absorbtivity test method
4, vertical wicking speed: GB/T 24218.6-2010 non-weaving cloth test method the 6th part: absorb
The test of property
5, wet ultimate strength: GB/T 24218.3-2010 non-weaving cloth test method third portion: fracture is strong
The mensuration (galley proof method) of power and elongation at break
6. fall performance of wadding a quilt with cotton: the medical non-woven compress test method part 2 of YY/T 0472.2-2004: become
Product compress annex F hygrometric state falls to wadding a quilt with cotton test method
Embodiment 1 dressing 1
Use opener shredding SAF fiber respectively and PLA fiber, be then used by feeding cotton machine by the SAF through shredding
Fiber is mixed homogeneously with PLA fiber, then uses carding machine combing to feed the composite fibre of cotton machine output, then
Use lapping machine that the composite fibre through combing is carried out lapping, after obtaining primary dressing, use needing machine to described
Primary dressing successively carries out pre-needling and main acupuncture obtains dressing.Finally, described dressing is wound, cuts out
Cut, post processing of plating prepares dressing 1.
Wherein, the fiber number of SAF fiber is 6.3D and a length of 52mm, the fiber number of PLA fiber be 1.2D and
A length of 38mm, SAF fiber is 5:5 with the mixed proportion of PLA fiber, and feeding cotton speed is 0.14m/min,
Combing cylinder speed is 220r/min, and pre-needling frequency is 10:11 with the ratio of main punch frequency, pre-needling
Draw ratio 1:1.18, main thorn draw ratio 1:1.2.
Result
The performance of dressing 1 is as shown in table 1.
Table 1
The thickness of described dressing 1 is 2.0mm, does not fall wadding after moisture absorption.
Embodiment 2 dressing 2
With embodiment 1, difference is: the fiber number of SAF fiber is 9D and a length of 52mm, and the second fiber is
Viscose rayon, the fiber number of viscose rayon is 1.5D and a length of 37mm, and SAF fiber is mixed with viscose rayon
Composition and division in a proportion example is 9:1, and feeding cotton speed is 0.53m/min, and combing cylinder speed is 260r/min, pre-needling
Frequency and main punch frequency are than for 10:10, and pre-needling draw ratio is 1:1.8, and main thorn draw ratio is 1:1.18.
Result
The performance of dressing 2 is as shown in table 2.
Table 2
The thickness of described dressing 2 is 1.0mm, does not fall wadding after moisture absorption.
Embodiment 3 dressing 3
With embodiment 1, difference is: the fiber number of SAF fiber is 10D and a length of 52mm, the second fiber
For viscose rayon, the fiber number of viscose rayon is 1.5D and a length of 40mm, SAF fiber and viscose rayon
Mixed proportion is 4:6, and feeding cotton speed is 0.48m/min, and combing cylinder speed is 224r/min, pre-pin
Thorn frequency and main punch frequency ratio is for 10:13, and pre-needling draw ratio is 1:1.8, and main thorn draw ratio is 1:1.35.
Result
The performance of dressing 3 is as shown in table 3.
Table 3
The thickness of described dressing 3 is 1.5mm, does not fall wadding after moisture absorption.
Embodiment 4 dressing 4
With embodiment 1, difference is: the fiber number of SAF fiber is 7D and a length of 50mm, and the second fiber is
Viscose rayon, the fiber number of viscose rayon is 1.5D and a length of 37mm, and SAF fiber is mixed with viscose rayon
Composition and division in a proportion example is 5:5, and feeding cotton speed is 0.48m/min, and combing cylinder speed is 224r/min, pre-needling
Frequency and main punch frequency are 10:12, and pre-needling draw ratio is 1:1.8, and main thorn draw ratio is 1:1.35.
Result
The performance of dressing 4 is as shown in table 4.
Table 4
The thickness of described dressing 4 is 1.8mm, does not fall wadding after moisture absorption.
Embodiment 5 dressing 5
With embodiment 1, difference is: the second fiber is polypropylene fiber, and the fiber number of polypropylene fiber is 2D and length
Degree is 40mm.
Result
The performance of dressing 5 is as shown in table 5.
Table 5
The thickness of described dressing 5 is 1.8mm, does not fall wadding after moisture absorption.
Embodiment 6 dressing 6
With embodiment 1, difference is: the second fiber is vinylon fibre, the fiber number of vinylon fibre be 1.2D and
A length of 38mm.
Result
The performance of dressing 6 is as shown in table 6.
Table 6
The thickness of described dressing 6 is 1.2mm, does not fall wadding after moisture absorption.
Embodiment 7 dressing 7
With embodiment 1, difference is: the second fiber is bamboo pulp fiber, the fiber number of bamboo pulp fiber be 1.5D and
A length of 40mm.
Result
The performance of dressing 7 is as shown in table 7.
Table 7
The thickness of described dressing 7 is 1.4mm, does not fall wadding after moisture absorption.
Embodiment 8 dressing 8
With embodiment 1, difference is: the second fiber is PLA fiber+viscose rayon (1:1), wherein
The fiber number of PLA fiber is 1.2D and a length of 38mm, and the fiber number of viscose rayon is 1.5D and a length of 40mm.
Result
The performance of dressing 8 is as shown in table 8.
Table 8
The thickness of described dressing 8 is 1.6mm, does not fall wadding after moisture absorption.
Embodiment 9 dressing 9
With embodiment 4, difference is: the second fiber is the mixed of polypropylene fiber, bamboo pulp fiber and vinylon fibre
Compound, wherein, the fiber number of polypropylene fiber is 2D and a length of 40mm, the fiber number of bamboo pulp fiber be 1.5D and
A length of 40mm, the fiber number of vinylon fibre is 1.2D and a length of 38mm, polypropylene fiber, bamboo pulp fiber and
The mixed proportion of vinylon fibre three is 5:3；2.
Result
The water absorption of gained dressing 9, liquid absorption and moisture holding capacity are superior to described dressing 4, its horizontal wet fracture
Strength is 8.2N/5cm, and longitudinal wet ultimate strength is 3.3N/5cm, does not fall wadding after moisture absorption.
Embodiment 10 dressing 10
With embodiment 4, difference is: SAF fiber is 8:2 with the mixed proportion of viscose rayon.
Result
The water absorption of gained dressing 10, liquid absorption and moisture holding capacity are superior to described dressing 4, its horizontal wet fracture
Strength is 3.6N/5cm, and longitudinal wet ultimate strength is 2.8N/5cm, does not fall wadding after moisture absorption.
Embodiment 11 dressing 11
With embodiment 4, difference is: SAF fiber is 7:3 with the mixed proportion of viscose rayon.
Result
The water absorption of gained dressing 11, liquid absorption and moisture holding capacity are superior to described dressing 4, its horizontal wet fracture
Strength is 9.8N/5cm, and longitudinal wet ultimate strength is 5.9N/5cm, does not fall wadding after moisture absorption.
Embodiment 12 dressing 12
With embodiment 4, difference is: SAF fiber is 3:7 with the mixed proportion of viscose rayon.
Result
The wet ultimate strength of gained dressing 12 is better than described dressing 4, and its water absorption is 50.6g/g, liquid absorption
For 28.9g/g, after moisture absorption, do not fall wadding.
Embodiment 4 gained dressing 4 and commercially available superabsorbent water dressing (hydrophilic fibre dressing) performance test result
It is shown in Table 9.Wherein, commercially available A dressing is DURAFIBER, and its thickness is 1.4mm, consists of carboxymethyl cellulose
Element is received；Commercially available B dressing is Hydrofiber Dress ing, and its thickness is 1.5mm, consists of ethyl sulphur
Silicate fiber element.
Table 9
As known from Table 9, compared to commercially available super water-absorbent dressing, the water absorption of dressing of the present invention improves 1.2
Times, liquid absorption improves 70%, and moisture holding capacity improves 1.1 times, and longitudinally perpendicular wicking rate improves 6.66 times,
Laterally vertical wicking speed improves 7.2 times, and wet ultimate strength at least improves about 30 times, and its combination property obtains
To significant increase, actual application can be advanced effectively.
Additionally, due to its simple in construction, technique simplify, low cost, it is especially advantageous for industrialization and produces.
Comparative example 1 dressing C1
With embodiment 4, difference is: pre-needling is identical with main acupuncture needle number, is No. 38 pins.
Result
It is serious that dressing C1 falls wadding under hygrometric state state.
Comparative example 2 dressing C2
With embodiment 4, difference is: combing cylinder speed is 400 turns/min.
Result
The outer surface of gained dressing C2 has more cotton knot, has a strong impact on outward appearance.
Comparative example 3 dressing C3
With embodiment 4, difference is: do not carry out pre-needling.
Result
Gained dressing C3 thickness is thicker, and mechanical strength is very poor.
In sum, the present invention is by using ad hoc structure and the fibrous raw material of composition and in specific acupuncture work
The new of a kind of water absorbing properties, water retention property, fracture strength and wicking properties with excellence is prepared under skill
Type dressing, described dressing can effectively absorb sepage and the sepage that absorbed will not occur inversely to ooze out, even if
Have in the wound of certain depth, such as sinus tract or the wound that moves under water, still dressing can be taken out smoothly after imbibition, not deposit
The problem in wound is being stayed not because of dressing strength.Additionally, described dressing is prone to after a procedure from wound
Upper removal, will not stick together and remain, and is more not result in second hurt.And, described dressing has knot
Structure is simple, preparation technology simplifies and the advantage of low cost.
The all documents mentioned in the present invention are incorporated as reference the most in this application, just as each document
It is individually recited as with reference to like that.In addition, it is to be understood that after the above-mentioned teachings having read the present invention,
The present invention can be made various changes or modifications by those skilled in the art, and these equivalent form of values fall within this Shen equally
Please appended claims limited range.
Claims (10)
1. a superabsorbent water dressing, it is characterised in that described dressing has a lower stack features:
(a-1) described dressing has monolayer layer structure, and the thickness of described dressing is 0.2-5mm；
(a-2) described dressing contains the first fiber and the second fiber, and wherein, described first fiber is SAF fiber,
And described second fiber is selected from lower group: viscose rayon, polypropylene fiber, vinylon fibre, PLA fiber, bamboo pulp
Fiber or a combination thereof；
(a-3) weight part ratio of described first fiber and described second fiber is 20-95:5-80；
(a-4) fiber number of described first fiber is 5-20D, and a length of 35-100mm of described first fiber；
(a-5) fiber number of described second fiber is 0.1-4D, and a length of 5-60mm of described second fiber.
2. dressing as claimed in claim 1, it is characterised in that the weight per unit area of described dressing is
30-300g/m2；And/or
The horizontal wet ultimate strength of described dressing is 2-100N/5cm；And/or
The longitudinal wet ultimate strength of described dressing is 2.5-70N/5cm.
3. dressing as claimed in claim 1, it is characterised in that in described dressing, described first fiber is in office
The density of one unit are is 0.7-1.3 with the ratio of described first fiber average density in whole dressing；With
/ or
Described second fiber is at the closeest in whole dressing of density and described second fiber of arbitrary unit are
The ratio of degree is 0.7-1.3.
4. dressing as claimed in claim 1, it is characterised in that described dressing have selected from one of lower group or
Multiple features:
(b-1) multiplying power inhaling distilled water of described dressing is 30-500g/g；
(b-2) multiplying power of the sorptivety liquid of described dressing is 20-300g/g；
(b-3) described dressing is 28-400g/g to the moisture holding capacity of distilled water；
(b-4) described dressing is 14-100mm/5min to the horizontal vertical wicking speed of distilled water；
(b-5) described dressing is 5-80mm/5min to the longitudinally perpendicular wicking rate of distilled water.
5. the preparation method of the dressing described in a claim 1, it is characterised in that comprise the steps:
(c-1) the first fiber and the second fiber be provided, wherein,
Described first fiber is SAF fiber；
Described second fiber is selected from lower group: viscose rayon, polypropylene fiber, vinylon fibre, PLA fiber, bamboo
Pulp fibres or a combination thereof；
(c-2) the first fiber and described second fiber described in opener shredding respectively is used；
(c-3) use and feed described first fiber through shredding and described the of cotton machine blend step (c-2) gained
Two fibers, obtain the first composite fibre；
(c-4) use carding machine combing step (c-3) described first composite fibre, obtain second through combing
Composite fibre；
(c-5) use lapping machine second composite fibre described to step (c-4) to carry out lapping, obtain primary applying
Material；
(c-6) use needing machine primary dressing described to step (c-5) to carry out acupuncture, obtain claim 1
Described dressing.
6. method as claimed in claim 5, it is characterised in that the combing of step (c-4) described carding machine
Cylinder speed is that 100-350 turns/min.
7. method as claimed in claim 5, it is characterised in that step (c-6) described acupuncture includes pre-pin
Thorn and main acupuncture, and pre-needling frequency and main punch frequency ratio is for 8-12:6-15.
8. method as claimed in claim 7, it is characterised in that the draw ratio of described pre-needling is 1:
1.01-3；And/or
The draw ratio of described main acupuncture is 1:1.01-2.8.
9. the purposes of the dressing described in a claim 1, it is characterised in that be used for preparing medical apparatus and instruments or defending
Raw articles for use.
10. goods, it is characterised in that described goods comprise the dressing described in claim 1 or by right
Require the dressing composition described in 1.
Priority Applications (1)
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| CN201510233617.2A CN106178071A (en) | 2015-05-08 | 2015-05-08 | A kind of superabsorbent water dressing and preparation method thereof |
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|---|---|---|---|
| CN201510233617.2A CN106178071A (en) | 2015-05-08 | 2015-05-08 | A kind of superabsorbent water dressing and preparation method thereof |
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|---|---|
| CN106178071A true CN106178071A (en) | 2016-12-07 |
Family
ID=57459967
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| CN201510233617.2A Pending CN106178071A (en) | 2015-05-08 | 2015-05-08 | A kind of superabsorbent water dressing and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019011000A1 (en) * | 2017-07-11 | 2019-01-17 | 佛山市优特医疗科技有限公司 | Reinforced wound dressing and preparation method therefor |
| CN109234911A (en) * | 2018-09-28 | 2019-01-18 | 杭州电子科技大学 | A kind of preparation method of biodegradable medical dressing |
| CN110273225A (en) * | 2018-03-13 | 2019-09-24 | 上海缔荣纺织品有限公司 | A kind of preparation process of SAF superabsorbent water baby's diaper hot-wind nonwoven cloth |
| CN113524809A (en) * | 2021-07-07 | 2021-10-22 | 四川玄武岩纤维新材料研究院(创新中心) | Multifunctional fireproof fabric and preparation method and application thereof |
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| WO2011075809A1 (en) * | 2009-12-24 | 2011-06-30 | Welshire Innovative Limited | Cleanable and reusable body fluid-absorbing fabric pad |
| CN103110477A (en) * | 2013-02-25 | 2013-05-22 | 苏州艾美医疗用品有限公司 | Manufacturing method of composite medical non-woven fabric absorbent pads |
| CN103142356A (en) * | 2013-03-08 | 2013-06-12 | 苏州艾美医疗用品有限公司 | Cationic wound repair paste and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011075809A1 (en) * | 2009-12-24 | 2011-06-30 | Welshire Innovative Limited | Cleanable and reusable body fluid-absorbing fabric pad |
| CN103110477A (en) * | 2013-02-25 | 2013-05-22 | 苏州艾美医疗用品有限公司 | Manufacturing method of composite medical non-woven fabric absorbent pads |
| CN103142356A (en) * | 2013-03-08 | 2013-06-12 | 苏州艾美医疗用品有限公司 | Cationic wound repair paste and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019011000A1 (en) * | 2017-07-11 | 2019-01-17 | 佛山市优特医疗科技有限公司 | Reinforced wound dressing and preparation method therefor |
| CN110273225A (en) * | 2018-03-13 | 2019-09-24 | 上海缔荣纺织品有限公司 | A kind of preparation process of SAF superabsorbent water baby's diaper hot-wind nonwoven cloth |
| CN109234911A (en) * | 2018-09-28 | 2019-01-18 | 杭州电子科技大学 | A kind of preparation method of biodegradable medical dressing |
| CN113524809A (en) * | 2021-07-07 | 2021-10-22 | 四川玄武岩纤维新材料研究院(创新中心) | Multifunctional fireproof fabric and preparation method and application thereof |
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Application publication date: 20161207 |