Background technology
Hospital gauze is the reticulated that a kind of absorbent cotton yarn or absorbent cotton viscose scribbled are made into.Hospital gauze has Stability Analysis of Structures and airing function; medically main as wound being carried out to wrapping process; both contributed to controlling ventilative and discharging sepage, and can prevent again extraneous pathogen from invading and causing wound to be infected further, and then reached the object protected wound, promote wound healing.It is simple that common hospital gauze has structure, and with low cost, intensity is good, and quality is soft, is widely used in skin wound nursing dressing.But also there is many distinct disadvantage in common hospital gauze.Such as there is moisture pick-up properties difference, need frequent replacing during use, reduce nursing efficiency, increase nursing cost; Wound surface can not be kept moistening, the delayed union time; After gauze infiltration, barrier action is poor, and easily cause exogenous infection, haemostatic effect is poor; Wound granulation is organized and is easily grown in the mesh of gauze, makes scrim fiber easily be adhered to incrustation place, not easily removes, cause pain during replacing.
Modern medical theory proves to provide a relatively moistening and closed environment to contribute to the healing of wound to wound, and the imbibition swelling type fiber dressing theoretical based on this " moisture treatment " arises at the historic moment, such as: alginate fiber dressing.Compared with common cotton gauze, alginate dressing has the performance absorbing large quantity of fluid, can absorb the exudate being equivalent to own wt 15 ~ 20 times, is 5 ~ 7 times of common gauze.Different from the mode that normal gauze dressing absorbs exudate, alginate dressing absorbs moisture and expands, and forms gel, be configured with the moist environment being beneficial to wound healing in wound surface.And swelling rear fiber can not remain on wound surface, easily removes during replacing, can not cause secondary insult, reduce the pain changed and cause to greatest extent.
Disclosedly in prior art to be stung by water or the technical scheme (such as, publication number CN1068158 A, CN 1119547 A, CN 1180562 A, CN 102704326 A) of acupuncture nonwoven fabrication techniques alginate dressing.By the product that makes without spinning process because desirable fibre matting effect cannot be formed, in use easily occur defeated and dispersed, when at hygrometric state, particularly become fragile, often cracked after absorbing blood or body fluid, be difficult to holding structure morphological integrity, be therefore subject to certain restrictions in use.In addition, under being subject to the forceful action such as acupuncture or water thorn, alginic acid system fiber easily damages, and cause the yield rate of non-woven fabrics low, price is high, is unfavorable for that product promotion is popularized.
Prior art also discloses and utilizes the knitting or woven technical scheme of wound dressing having spinning cloth to make of alginic acid fibre.Such as, it is knitting or wovenly have spinning cloth that publication number CN 102877204 A application for a patent for invention discloses a kind of alginate, it is characterized in that alginate fiber for making gauze by alginate and polyvinyl alcohol blending or crosslinked after, obtain through wet method or dry-wet spinning.Just there is the higher polyvinyl alcohol spinning intensity owing to being mixed in alginic acid fibre, improve the spinnability of this alginate to a certain extent.But this technical scheme adopts single alginic acid fibre as gauze base material, can not really to solve in gauze use procedure because the wet strength caused after absorbing fluid is poor, can not complete etc. the defect of holding structure.
In addition, the utility model patent of publication number CN 202666042 U discloses a kind of alginic acid fibre gauze, there is the alginic acid fibre gauze that one deck directly contacts with wound, layer of silica gel is provided with at the opposite side of alginic acid gauze, in order to strengthen the toughness of alginic acid fibre gauze, between alginic acid fibre gauze and layer of silica gel, be provided with one deck Fypro net.This technical scheme have employed the composite construction of swelling type gauze layer and non-swelling type scrim layer, although the technical problems such as the structural stability difference in the poor mechanical property of alginate dressing and use procedure can be solved preferably, still there is structure and processing technique is complicated, cost and gauze performance can not have both defect.
Summary of the invention
Technical problem to be solved by this invention overcomes above-mentioned technological deficiency, provides one can absorb water, perspiration, body fluid or blood gauze, and this gauze in use can generating portion gelation and holding structure regularity, with easy to use.
The present invention realizes above-mentioned order to adopt following technical scheme: provide a kind of gauze, and the yarn that it is characterized in that manufacturing described gauze is the scribbled by alginate fiber and cellulosic fibre blend.
In described scribbled, cellulose fibre has good spinnability and higher intensity, can give the wet strength that gauze is enough, makes fabric in use holding structure regularity, and can reduce costs.Alginate fiber then gives the physicochemical properties such as gauze imbibition is swelling, gel, fabric is had promote wound healing, antibacterial etc. functional.
Described scribbled through known technological means, such as: knitting, woven or braiding, be prepared into described gauze.
In the present invention, alginate fiber and cellulose fibre can according to any ratio scribbleds.Alginate fiber proportion is larger, and prepared gauze swelling behavior is better, but wet strength is less; Cellulose fibre proportion is larger, and prepared gauze wet strength is better, but Swelling Capacity dies down.Consider object of the present invention, in described scribbled, shared by alginate fiber and cellulose fibre, yarn weight percentage ratio is preferably alginate fiber and accounts for 20 ~ 100%, and described cellulose fibre accounts for 0 ~ 80%.
Cellulose fibre of the present invention comprises one or more combinations in degreasing cotton fiber, combing cotton fibre, long-staple cotton fiber, medium staple cotton fiber, ramee, bamboo fibre, Lyocell fiber (sky silk), viscose fiber or Modal fibre.
Alginate fibre of the present invention refer in calcium alginate fibre, silver-containing alginic acid calcium fiber, Zinc-containing alginic acid calcium fiber any one.
Further, described alginate fiber can be a kind of alginate/polyvinyl alcohol composite fiber.
Further, in described alginate fiber, the content of calcium is 2 ~ 10% (weight).
Further, the silver ion containing 0 ~ 1% (weight) in described silver-containing alginic acid calcium fiber.
Further, the zinc ion containing 0 ~ 5% (weight) in described Zinc-containing alginic acid calcium fiber.
Various alginate fiber described in the present invention is short fiber form, length 10 ~ 100mm, fiber single fiber degree 0.4 ~ 3.5dtex, dry fracture strength 1.4 ~ 4.0cN/dtex, dry elongation at break 10 ~ 22%.
Alginate fiber, when contacting with wound surface sepage, can discharge corresponding metal ion, and gives gauze dressing different functional.Such as, calcium alginate fibre can generate the sodium alginate of solubility by ion exchange, and discharge calcium ion in wound, induced platelet activates simultaneously, promotes blood coagulation and wound healing.Calcium alginate containing zinc can discharge zinc ion, promotes blood coagulation and biologically active pdgf, accelerate wound healing, and product has biocidal property; The calcium alginate fibre of argentiferous then can be given gauze dressing and also have anti-microbial property while having high liquid-absorbing.
Useful technique effect of the present invention: gauze provided by the present invention is owing to have employed scribbled, merged the advantage of alginate fiber and cellulose fibre, the absorption perspiration making institute's yarn fabric have both alginate dressing to have, body fluid, blood, moisturizing, antibacterial, promote that the intensity that the functions such as wound healing and common gauze have is good, easy-to-use, structure simple, be easy to commercial production and the advantage such as reduce costs.
Of the present invention provided gauze is particularly suitable for wound medical application, such as gauze dressing, binder etc.
Detailed description of the invention:
Below in conjunction with specific embodiment, technical scheme of the present invention is elaborated.The method preparation that the various Sargassum adopted in the embodiment of the present invention and non-swelling type fiber are commercially available prod or openly report by domestic and foreign literature.
Embodiment 1
Raw material 1: calcium alginate fibre, wherein the content of calcium is 7.8% (quality).
Raw material 1: degreasing cotton fiber
The ratio being 60%:40% by mass percentage according to calcium alginate fibre and degreasing cotton fiber carries out blending, obtains the yarn count 28s of scribbled, single end strength 35cN/dtex.
By above-mentioned yarn through woven one-tenth gauze, this gauze grammes per square metre 135g/m2, hygroscopicity is that every gram of gauze absorbs normal saline 12g, and minimum wet strength is 5.2N/cm.
Embodiment 2
Raw material 1: silver-containing alginic acid calcium fiber, wherein the content of calcium is 7.3% (quality), and the content of silver is 0.1% (quality).
Raw material 2: viscose fiber
The ratio being 20%:80% by mass percentage according to silver-containing alginic acid calcium fiber and viscose fiber carries out blending, obtains the yarn count 24s of scribbled, single end strength 32cN/dtex.
By above-mentioned yarn through woven one-tenth gauze, this gauze grammes per square metre 102g/m2, hygroscopicity is that every gram of gauze absorbs normal saline 8.2g, and minimum wet strength is 7.2N/cm.
Embodiment 3
Raw material 1: calcium alginate fibre, the content of calcium is 5.0% (quality).
Raw material 2: long-staple cotton fiber
The ratio being 80%:20% by mass percentage according to calcium alginate fibre and long-staple cotton fiber carries out blending, obtains the yarn count 20s of scribbled, single end strength 24cN/dtex.
By above-mentioned yarn through woven one-tenth gauze, this gauze grammes per square metre 110g/m2, hygroscopicity is that every gram of gauze absorbs normal saline 14.7g, and minimum wet strength is 3.9N/cm.
Embodiment 4
Raw material 1: Zinc-containing alginic acid calcium fiber, wherein the content of calcium is 10.0% (quality), and the content of zinc is 1.2% (quality).
Raw material 2: tencel fiber
The ratio being 25%:75% by mass percentage according to Zinc-containing alginic acid calcium fiber and tencel fiber carries out blending, obtains the yarn count 36s of scribbled, single end strength 56cN/dtex.
By above-mentioned yarn through woven one-tenth gauze, this gauze grammes per square metre 65g/m2, hygroscopicity is that every gram of gauze absorbs normal saline 8.9g, and minimum wet strength is 9.0N/cm.
Embodiment 5
Raw material 1: Zinc-containing alginic acid calcium fiber, wherein the content of calcium is 4.5% (quality), and the content of zinc is 5.0% (quality).
Raw material 2: Modal fibre
The ratio being 40%:60% by mass percentage according to Zinc-containing alginic acid calcium fiber and Modal fibre carries out blending, obtains the yarn count 28s of scribbled, single end strength 37cN/dtex.
By above-mentioned yarn through being knitted into gauze, this gauze grammes per square metre 138g/m2, hygroscopicity is that every gram of gauze absorbs normal saline 8.4g, and minimum wet strength is 6.1N/em.
Embodiment 6
Raw material 1: calcium alginate fibre, wherein the content of calcium is 5.0% (quality).
Raw material 2: soybean fiber
The ratio being 80%:20% by mass percentage according to calcium alginate fibre and soybean fiber carries out blending, obtains mixed yarn number 40s, single end strength 48cN/dtex.
By above-mentioned yarn through woven one-tenth gauze, this gauze grammes per square metre 60g/m2, hygroscopicity is that every gram of gauze absorbs normal saline 14.8g, 2.8N/cm the most.
Embodiment 7
Raw material 1: silver-containing alginic acid calcium fiber, wherein the content of calcium is 5.0% (quality), and the content of silver is 1.0% (quality).
Raw material 2: chitin fiber
The ratio being 10%:90% by mass percentage according to silver-containing alginic acid calcium fiber and chitin fiber carries out blending, obtains the yarn count 22s of scribbled, single end strength 26cN/dtex.
By above-mentioned yarn through woven one-tenth gauze, this gauze grammes per square metre 98g/m2, hygroscopicity is that every gram of gauze absorbs normal saline 6.0g, and minimum wet strength is 7.7N/cm.
Embodiment 8
Raw material 1: silver-containing alginic acid calcium fiber, wherein the content of calcium is 5.6% (quality), and the content of silver is 0.1% (quality).
Raw material 2: medium staple cotton fiber
The ratio being 75%:25% by mass percentage according to silver-containing alginic acid calcium fiber and medium staple cotton fiber carries out blending, obtains the yarn count 32s of scribbled, single end strength 28cN/dtex.
By above-mentioned yarn through woven one-tenth gauze, this gauze grammes per square metre 56g/m2, hygroscopicity is that every gram of gauze absorbs normal saline 10g, and minimum wet strength is 3.2N/cm.
Embodiment 9
Raw material 1: silver-containing alginic acid calcium fiber, wherein the content of calcium is 2.0% (quality), and the content of silver is 0.4% (quality).
Raw material 2: ramee
The ratio being 70%:30% by mass percentage according to silver-containing alginic acid calcium fiber and ramee carries out blending, obtains the yarn count 36s of scribbled, single end strength 40cN/dtex.
By above-mentioned yarn through being knitted into gauze, this gauze grammes per square metre 126g/m2, hygroscopicity is that every gram of gauze absorbs normal saline 9.3g, and minimum wet strength is 2.7N/em.
Embodiment 10
Raw material 1: calcium alginate fibre, wherein the content of calcium is 2.0% (quality).
Raw material 2: bamboo fibre
The ratio being 50%:50% by mass percentage according to calcium alginate fibre and bamboo fibre carries out blending, obtains the yarn count 36s of scribbled, single end strength 45cN/dtex.
By above-mentioned yarn through woven one-tenth gauze, this gauze grammes per square metre 55g/m2, hygroscopicity is that every gram of gauze absorbs normal saline 8.0g, and minimum wet strength is 3.7N/cm.
Embodiment 11
Raw material 1: Zinc-containing alginic acid calcium fiber, wherein the content of calcium is 5.2% (quality), and the content of zinc is 2.0% (quality).
Raw material 2: viscose fiber
The ratio being 30%:70% by mass percentage according to Zinc-containing alginic acid calcium fiber and viscose fiber carries out blending, obtains the yarn count 36s of scribbled, single end strength 78cN/dtex.
By above-mentioned yarn through woven one-tenth gauze, this gauze grammes per square metre 43g/m2, hygroscopicity is that every gram of gauze absorbs normal saline 8.8g, and minimum wet strength is 4.5N/cm.
Embodiment 12
Raw material 1: calcium alginate fibre, wherein the content of calcium is 7.3% (quality).
Raw material 2: richcel fiber
The ratio being 90%:10% by mass percentage according to calcium alginate fibre and richcel fiber carries out blending, obtains the yarn single end strength 108cN/dtex of scribbled.
By above-mentioned yarn through woven one-tenth gauze, this gauze grammes per square metre 78g/m2, hygroscopicity is that every gram of gauze absorbs normal saline 10.4g, and minimum wet strength is 2.7N/cm.
Aforesaid embodiment is only part preferred embodiment of the present invention, and not all embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making under creative work prerequisite, variously to increase, to revise and equivalence replaces other embodiment obtained, all belong to the scope of protection of the invention.Therefore, embodiment disclosed in the present specification should be regarded as the present invention is described, and is not used to limit the present invention.Scope of the present invention should be defined by the scope that claims are claimed, is not limited to previous description.