CN1080336C - Method of disposal of hot water soluble garments and like fabrics - Google Patents
Method of disposal of hot water soluble garments and like fabrics Download PDFInfo
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- CN1080336C CN1080336C CN97199405A CN97199405A CN1080336C CN 1080336 C CN1080336 C CN 1080336C CN 97199405 A CN97199405 A CN 97199405A CN 97199405 A CN97199405 A CN 97199405A CN 1080336 C CN1080336 C CN 1080336C
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- vinal
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- towel
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15203—Properties of the article, e.g. stiffness or absorbency
- A61F13/15211—Properties of the article, e.g. stiffness or absorbency soluble or disintegratable in liquid
Abstract
A towel, sponge and gauze made from a plurality of fibers of polyvinyl alcohol that are only water soluble at temperatures above 37 DEG C. The polyvinyl alcohol fibers have a degree of hydrolysis of at least 80% with a degree of polymerization between approximately 300 to 3000.
Description
Related application
The application is the part continuation application of the common pending application series number 08/286,814 of submission on August 5th, 1994, and 08/286,814 is part continuation applications of the common pending application series number 08/055,083 of submission on April 29th, 1993.
Invention field
The present invention relates to special product, i.e. towel, spongy fabric and the gauze of producing by hot water soluble polyvinyl alcohol resin optionally.This resinoid is shaped to fiber, again fiber is made required finished product.
Background of invention
The nursing of hospital patient all can produce a large amount of infectious medical refuses in normal care and critical care.Total transformation from reusable article capable of washing to the disposables product has taken place over nearly more than 30 years.The purpose of making this transformation is the possibility of improving the disinfection technology in the patient care and reducing cross infection between patient, medical personnel and the general public.The up-to-date rules and regulations of federal government and state government, for example the appearance of clinical waste in 1988 tracking regulations and OSHA medical institutions article increases the clinical waste that must classify as " infectiousness " greatly.
When patient is received in hospital, each patient will produce about 55 pounds of clinical wastes every day, and wherein about 20% is communicable.The aim that present United States Hospital federation and Centre for Disease Control are announced is will be MEDICAL WASTE TREATMENT when it produces.Organize for these two and recognize that all clinical waste mainly is a kind of occupational hazard to health care provider, rather than environmental problem.Handle infectious medical refuse the best way and be the MEDICAL WASTE TREATMENT that when it produces, carries out disinfection immediately and will handle and fall, and reduce the processing and the storage time of each link as far as possible.The modification of 29CFR 1910.1030 has been emphasized to need a kind of effective ways of handling clinical waste greatly, and 29CFR 1910.1030 provides about employment security and healthy regulations for federal regulations, and 29USC 655,657, are intended to control the haematogenous cause of disease.Specifically, these regulations require to set up one and infect control plan, determine the capacity and the strict precautionary measures perhaps of blood and other potential infectious material sample, to reduce the infection of disease as far as possible.The method of handling clinical waste safely effectively will help implementing above-mentioned regulations greatly.
Therefore, the consumption of medical accessible textiles or adhesive-bonded fabric is with the rate increase in every year about 10%.Total sales volume was about 11.55 hundred million dollars in 1988.Expected for the end of the year 1996, the medical sales volume of handling adhesive-bonded fabric will be above 2,500,000,000 dollars.In the U.S., the annual operation that all will make at least 3 thousand ten thousand examples must be sterilized earlier and then carries out new operation after the operation of every exception section, in order that reduced the infection that patient may bring other patient or medical personnel as far as possible operating room.Infect more and more stricter regulation from the current occupation that blood and body fluid are caused, this is a particular importance.
Towel, spongy fabric and gauze since operation occurring, have just been used always.These materials are used for replacing paper handkerchief, absorb blood and other oxidant of wound, also are used for cleaning some used vessel in hand and the auxiliary cleaning operation.
Traditionally, towel, spongy fabric and gauze are all made with cotton fiber, but are attempting in the last few years with comprising that the fiber of polyester fiber, rayon fiber and other fibrous material replaces always.Select these fibers to be because they are the artificial materials that become more readily available and clean.Cotton is a kind of Agricultural Materials, and price skyrockets, the output instability.The substitute of having noticed cotton already generally all can not be satisfactory, though made the outward appearance that many effort attempt to imitate cotton, all futile.
Hospital generally discards surgery with gauze, spongy fabric and the towel crossed.Its processing method is to bury or burn.But in either case, article are all aggravating the infection of some blood borne disease to the employee that is responsible for wrapping and material is handled with later processing.
Therefore the present invention aims to provide the towel that can dispose, spongy fabric and gauze after use, avoids simultaneously handling the extra burden of place increase to burying with other.
After providing and use, another object of the present invention can in once-through operation, just dissolve and adequately disinfected towel, spongy fabric and gauze.
After consider following disclosure and relevant claim, above-mentioned purpose and further purpose just have been more readily understood.
Summary of the invention
The invention provides a kind of article, it comprises and is selected from a kind of in one group of article being made up of towel, spongy fabric and gauze, and these group article contain many only just water-soluble vinals under about temperature more than 37 ℃.
In another embodiment, the invention provides a kind of article, it comprises and is selected from a kind of in one group of article being made up of towel, spongy fabric and gauze, these group article contain many only water-soluble crystalline polyethylene alcohol fibers of ability under about temperature more than 37 ℃, wherein, vinal is saponification degree to be carried out greater than 98% polyvinyl acetate that spinning solution is extruded and through heat treatment with stretch and produce, the degree of polymerization of fiber is about 1300～about 2000.
In another embodiment, the invention provides a kind of article, it comprises and is selected from a kind of in one group of article being made up of towel, spongy fabric and gauze, these group article contain many only water-soluble crystalline polyethylene alcohol fibers of ability under about temperature more than 37 ℃, also comprise the antitack agent of effective dose and the wetting agent of effective dose, wherein, vinal is saponification degree to be carried out greater than 98% polyvinyl acetate that spinning solution is extruded and through heat treatment with stretch and produce, the degree of polymerization of fiber is about 1300～about 2000.
In another embodiment, the invention provides a kind of article, it comprises and is selected from a kind of in one group of article being made up of towel, spongy fabric and gauze, these group article contain many only water-soluble crystalline polyethylene alcohol fibers of ability under about temperature more than 37 ℃, also comprise the antitack agent of effective dose and the wetting agent of effective dose.
In another embodiment, the invention provides a kind of method of handling article, described article comprise and are selected from a kind of in one group of article being made up of towel, spongy fabric and gauze, these group article contain many only water-soluble vinals of ability under about temperature more than 37 ℃, described method comprises and is higher than about 37 ℃ water with temperature and contacts one sufficiently long period containing the article that one of are selected from one group of article being made up of towel, spongy fabric and gauze, makes these article be dissolved in water.
Detailed Description Of The Invention
The present invention is by providing accessible towel, spongy fabric and gauze and lecturing these materials and use processing method later to satisfy the needs of hospital and health institution.These class article use the fabric of being made up of vinal to make, and described vinal is about more than 37 ℃, preferably, about more than 50 ℃, more preferably, about more than 70 ℃, even more preferably, are water miscible under about temperature more than 90 ℃.For solution temperature was 70 ℃ to 90 ℃ and higher article, vinal was to extrude (being called " wet spinning ", " solvent spinning " or " wet method/solvent spinning " again) by spinning solution to produce through the process of heat treatment and stretching again.These class article also can be produced through heat treatment and stretching by melt spinning or aquogel spinning again.For for about 37 ℃～70 ℃ article, this fiber is produced with stretching through heat treatment by the described melt spinning of this patent or aquogel spinning again for solution temperature.
Especially, in one embodiment, the invention provides the towel that contains many fibers, spongy fabric and gauze, described fiber by only under about temperature more than 37 ℃ just water-soluble polyvinyl alcohol constitute.In another embodiment, polyvinyl alcohol is a crystalline polyethylene alcohol.In another embodiment, fiber is extruded again through the heat treatment and the production that stretches by spinning solution.In an alternative embodiment, fiber is extruded (or " melt spinning ") again through the heat treatment and the production that stretches by melt.In another embodiment that substitutes, fiber is extruded (" the anti-silk of aquogel ") by aquogel and is produced through heat treatment and stretching.
In another embodiment, polyvinyl alcohol is to produce above 80% polyvinyl acetate with saponification degree.In another embodiment, polyvinyl alcohol is to produce above 98% polyvinyl acetate with saponification degree.In a further embodiment, polyvinyl alcohol is to produce above 99% polyvinyl acetate with saponification degree.In an alternative embodiment, the degree of polymerization of fiber is about 300～3000, and in another embodiment, the degree of polymerization of fiber is about 700～1200.In another embodiment again, the degree of polymerization of fiber is about 1300～about 2000.
In addition, the invention provides wherein, the water content of fiber maintains about 1.5～above-mentioned towel of about 15.0 weight %, spongy fabric and gauze.
In another embodiment, the invention provides and also contain the have an appointment 0.1～above-mentioned towel of about 5.0 weight % antitack agents, spongy fabric and gauze.In another embodiment, the fiber that the invention provides wherein is above-mentioned towel, spongy fabric and the gauze that staple fibre yarn is made through heat bonding, chemical adhesion, acupuncture, wet-laying or air lay.
In an alternative embodiment, the invention provides and also contain the have an appointment 0.1～above-mentioned towel of about 2.0 weight % wetting agents, spongy fabric and gauze.
In another embodiment of the invention, the degree of crystallinity of polyvinyl alcohol is at least about 0.20.In a further embodiment, the degree of crystallinity of polyvinyl alcohol is at least about 0.40.In another embodiment again, the degree of crystallinity of polyvinyl alcohol is at least about 0.70.In addition, in another embodiment, the degree of orientation of polyvinyl alcohol is at least about 0.20.In a further embodiment, the degree of orientation of polyvinyl alcohol is at least about 0.40.In another embodiment again, the degree of orientation of polyvinyl alcohol is at least about 0.5.
Also have in the embodiment of the present invention, polyvinyl alcohol is only just water-soluble under about temperature more than 50 ℃.In another preferred embodiment, polyvinyl alcohol is only just water-soluble under about temperature more than 70 ℃.In a preferred embodiment, polyvinyl alcohol is only just water-soluble under about temperature more than 90 ℃.
In an alternative embodiment, the invention provides the towel that contains many fibers, spongy fabric and gauze, described fiber comprises the only water-soluble crystalline polyethylene alcohol of ability under about temperature more than 37 ℃, and vinal wherein is to be surpassed that 98% polyvinyl acetate is extruded by spinning solution and produced with stretching through heat treatment by saponification degree, and the degree of polymerization of fiber is about 1300～about 2000.
In another embodiment, the invention provides the towel that contains many fibers, spongy fabric and gauze, described fiber comprises only at the just water-soluble crystalline polyethylene alcohol of about temperature more than 37 ℃, also comprise the antitack agent of effective dose and the wetting agent of effective dose, vinal wherein is to be extruded by spinning solution above 98% polyvinyl acetate and produced through heat treatment and stretching by saponification degree, and the degree of polymerization of fiber is about 1300～about 2000.
In another embodiment, the invention provides the towel that contains many fibers, spongy fabric and gauze, described fiber comprises the only water-soluble crystalline polyethylene alcohol of ability under about temperature more than 37 ℃, wherein, fiber is made into towel, spongy fabric and gauze, also comprises the antitack agent of effective dose and the wetting agent of effective dose.In an alternative preferred embodiment, vinal is to be extruded by spinning solution above 98% polyvinyl acetate and produced through heat treatment and stretching by saponification degree.In another embodiment that substitutes, the degree of polymerization of fiber is about 1300～about 2000.In also having an embodiment, the water content of fiber maintains about 1.5～about 15 weight %.
In addition, the invention provides a kind of to containing many only processing methods of towel, spongy fabric and the gauze of just water-soluble vinal under about temperature more than 37 ℃, this method comprises that fiber and temperature are higher than about 37 ℃ water contacts one sufficiently long period, makes fibrolysis in water.
Fiber can prepare with wet method/solvent spinning (" spinning solution is extruded "), melt spinning or aquogel spin processes.Used concrete grammar depends on the desired solution temperature of vinal.For example, when the production solution temperature is 70 ℃ or higher fiber, preferably adopts degree of hydrolysis to be at least about 98% hydrolysed polyvinyl acetate and preferably realize with one of above-mentioned three methods.And the production solution temperature preferably adopts degree of hydrolysis to be at least about hydrolysed polyvinyl acetate of 80～about 98% and realizes with melt spinning process or aquogel spin processes when being about 37 ℃～about 70 ℃ fiber.In one embodiment, can improve the degree of crystallinity and the degree of orientation of polyvinyl alcohol, thereby improve the solution temperature of finished product vinal with after-drawing and heat treatment.
Solution temperature is that about 93 ℃ vinal is preferably used in the application of hot water soluble.This fiber commercially available product " vinylon " of company (Japanese Kurary) also can prepare in the following method.
In a preferred embodiment, can be to prepare by the spinning solution extrusion molding as follows at the vinal of 70 ℃～about 93 ℃ (or higher) dissolving.Radial polyvinyl alcohol is cleaned several times in deionized water.Then this polyvinyl alcohol is dissolved in that to make concentration in about 100 ℃ hot water be about 10～25% poly-vinyl alcohol solution.Solution preferably after filtration or the degassing.
Force after filtration with the solution of the degassing pore by spinnerets with pump and to enter 40 ℃～about 50 ℃ supersaturation Na
2SO
4Solution (Glauber salt).For improving fibre strength, before heat treatment, carry out suitable stretching earlier.For example, can be with monofilament at another supersaturation Na
2SO
4Wet about 2.4 times of being stretched to its former length in the solution.To be stretched to general extension after this monofilament drying more then for about 3 times (the making its solution temperature more approach 70 ℃) to 6 times (making its solution temperature more approach 90 ℃) of its former length and at 200 ℃～about 250 ℃, preferably, in about 220 ℃ of heating.At this moment, monofilament is cut to certain-length, at one 70 ℃ supersaturation Na
2SO
4Make it curling in the solution, and in deionized water at room temperature, clean.With monofilament further processing in the operation that oils of gained, add surfactants such as lubricant, antistatic additive and adhesive at this then.At last, with fiber tumble dry in air, until parching.Then these fibers are optionally reeled, so that be used to make towel of the present invention, spongy fabric and gauze subsequently.
For purposes of the invention, the anti-antistatic agent of Shi Yonging is any antistatic additive that can be used for vinal known in the present technique.They include, but not limited to a kind of polyoxyethylene (POE) sodium alkylether sulphate [(RO (CH
2CH
2))
nSO
3Na] and alkyl phosphoric acid potassium is [(RO)
2P (O) is (OK)] or [(RO) P (O) is (OK)
2] mixture.And, for the present invention, suitable adhesive can be used for vinal, adhesive includes, but not limited to the POE alkyl ether.At last, can use suitable anti-friction liniment (" lubricant "), they are included in any anti-friction liniment that can be used for vinal known in the present technique, for example, but are not limited to tristerin: C
17H
35C (O) O-CH
2C (H) is CH (OH)
2OH.The composition of available above-mentioned additive, for example available by 80% antistatic additive, the mixture that 10% anti-friction liniment and 10% adhesive are formed, this mixture dilutable water is to about 50/50.Then, with the preparation of this mixture into about 0.21% final oil content.
Should be pointed out that as long as initial hydrolysed polyvinyl acetate has enough degree of hydrolysis then the heat treatment meeting improves the water-soluble temperature of vinal.Therefore, just require to use degree of hydrolysis to surpass 98% polyvinyl acetate water insoluble more than 90 ℃.But lower solution temperature can obtain with lower degree of hydrolysis, as described in other place of this patent, with the degree of hydrolysis that approaches 80%.So vinal at room temperature can not dissolve, but can be dissolved in more than 37 ℃, preferred 70 ℃, more preferably 80 ℃, more preferably 90 ℃ again, in the preferred especially water more than 93 ℃.
In another embodiment, the vinal that is dissolved in 37 ℃～about 70 ℃ of water prepares with melt spinning process.For melt spinning, be that polyvinyl alcohol is mixed with a kind of plasticizer such as glycerol polyethylene glycol ether, spin with the fusion under the temperature between about 190 ℃～about 220 ℃ of this mixture, mixing and from spinning plate then.Heat treatment and stretching are arranged in wet spinning process as previously mentioned.Preferably to adopt saponification degree be 80～98% polyvinyl acetate production to used polyvinyl alcohol in the melt spinning process, is dissolved in 37 ℃～70 ℃ water to guarantee it.
In another embodiment that substitutes, the vinal that is dissolved in 37 ℃～about 70 ℃ of water is the preparation of water gel spinning.For the aquogel spinning, be to mix under the temperature that is incorporated between about 90 ℃～about 100 ℃ polyvinyl alcohol and water with the mixture fusion and from spinnerets, spin.As previously mentioned, heat treatment and stretching are arranged in wet spinning.The used polyvinyl alcohol of aquogel spin processes preferably is 80～98% polyvinyl acetate production with saponification degree, to guarantee its dissolubility in 37 ℃～70 ℃ water.
Be applicable to that polyvinyl alcohol of the present invention preferably has crystallographic property.In one embodiment, degree of crystallinity is at least 0.20, in another embodiment, degree of crystallinity is at least 0.25, and in another embodiment, degree of crystallinity is at least 0.30, in another embodiment, degree of crystallinity is at least 0.35, and in another embodiment, degree of crystallinity is at least 0.40, in another embodiment, degree of crystallinity is at least 0.50, and in another embodiment, degree of crystallinity is at least 0.60, in another embodiment, degree of crystallinity is at least 0.70, and in another embodiment, degree of crystallinity is at least 0.80, in another embodiment, degree of crystallinity is at least 0.90, and in another embodiment, degree of crystallinity is at least 0.95.In another embodiment, be at least 0.20 through the degree of orientation of the vinal of heat treatment and drawing-off, in another embodiment, be at least 0.40, in another embodiment, be at least 0.50, in another embodiment, be at least 0.60, in another embodiment, be at least 0.70, in another embodiment, be at least 0.80, in another embodiment, be at least 0.90, and in another embodiment, be at least 0.95.The degree of crystallinity and the degree of orientation are measured with infrared spectrum technology.Degree of crystallinity is crystal region and the ratio of amorphous area, and the degree of orientation is a unoriented region and the ratio of oriented region.
The water content of polyvinyl alcohol preferably is maintained at about 1.5～15.0% (weight), more preferably, is 5% (weight).Another characteristics of this polyvinyl alcohol are: the degree of polymerization is about 300～3000, preferably, 700～2000, more preferably about 1300～about 2000, most preferably, about 1700.In an alternative preferred embodiment, for realizing more approaching 70 ℃ hot water soluble, the most handy degree of polymerization is lower than about 1000 polyvinyl alcohol.
In addition, it is about 80% that the saponification degree of producing the used polyvinyl acetate of polyvinyl alcohol should be higher than at least, preferably at least about 90%, and more preferably at least about 95% more preferably at least 98%, more preferably 99%, and most preferably, be 99.5% or higher.
Just as noted, in a preferred embodiment, the invention provides and be mainly used in patient mechanism and the novel towel of home environment, spongy fabric and gauze and processing method thereof outside medical industry in the hospital, the institute.In these mechanisms, this series products fluid general and human body comes in contact, so the disease such as viral hepatitis type b and the AIDS etc. that lack biodegradability and come from the human body fluid in view of the product in past have potential infectiousness, handle with sterilization and just receiving special concern.For overcoming these difficulties, suggestion is made suitable towel, spongy fabric and gauze with the fabric that contains vinal, and described vinal is being water miscible more than 50 ℃ more preferably preferably more than 37 ℃.If this series products is in obviously lower temperature (for example being lower than 37 ℃) dissolving, then when they with fluid that approaches human body temperature such as people's blood or urinate when contacting, undesirable dissolving will take place.Only at higher temperature as more than 37 ℃, more preferably, at 50 ℃, more preferably, more than 70 ℃ and most preferably, more than 90 ℃ just the polyvinyl alcohol of dissolving just can prevent undesirable dissolving, and for implementing the invention provides a kind of preferable material.In fact, thought already, one aim at dissolving product of the present invention and similarly film, fiber and clothing, temperature reaches or approach the hot bath of water boiling point such as washing machine in to handle also be a kind of effective sterilization means.But the cold sterilization medium is paid attention to especially, as long as these temperature are higher than the solution temperature of vinal.Can kill two birds with one stone like this, the polymer of promptly both having sterilized has also suffered the polymer dissolution post processing to sewerage system.So not only reduced giving at present and buried the burden that the place increases, and the sewer of liquid handle also will prove a kind of lower-cost, can make the user after use, break away from the technology of this series products.
Product of the present invention can be from the fabric manufacturing, and fabric is made from vinal again.In one embodiment, the fabric that contains the polyvinyl homopolymers is through after-drawing or heat treatment or simultaneously through after-drawing and heat treatment and crystallization.The present invention preferably adopts be crystallization, saponification degree is higher than 99% polyvinyl acetate.But, described as other place of this patent, can contain the polyvinyl acetate of other saponification degrees and degree of crystallinity, make practical vinal adapt to required purpose.
The fabric that is used to produce towel of the present invention, spongy fabric and gauze can be made of traditional staple fibre yarn.But preferably become fiber process heat bonding, chemical adhesion, acupuncture, wet-laying, air lay or other supatex fabric.This class processing can be made equipment, method and the step that ordinary skilled artisan is familiar with in the field with textiles and be carried out.The preferred weight of towel of the present invention, spongy fabric and gauze is 15～200g/ sign indicating number
2This series products can be made fibrage bonding or sewn together with abundant.
Randomly, in still another preferred embodiment, polyvinyl alcohol can contain about 0.1～5.0% (weight) of polyvinyl alcohol weight, most preferably, and 0.1～2.0% wetting agent of the antitack agent of 2～3% (weight) and/or polyvinyl alcohol polymer weight.The wetting agent and the antitack agent that are applicable to vinal are known any wetting agent and antitack agents in this technical field.Purpose with antitack agent is further to improve the utilizability of polyvinyl alcohol in producing this product.Particularly, thought that antitack agent can weaken the hydrogen bond action between the adjacent hydroxyl on each fibre bundle.Suitable antitack agent and composition include, but not limited to silica (SiO
2) polymer, talcum, calcium carbonate and vapor phase method hydrophily SiO
2Further also find, in vinal or fabric, add the water imbibition that wetting agent can unexpectedly help improving article greatly.Suitable wetting agent includes but not limited to fluorocarbons, as Minnesota Mining and Manufacturing Co. with FC-171
This series products for the trade name supply.
Be used for polymer of the present invention by having or not forming with the crosslinked or noncrosslinking polyvinyl alcohol of acetyl group.Polyvinyl alcohol can be partial hydrolysis at least, promptly has more than 80%, and is preferred more than 90%, more preferably more than 95%, but is lower than about 98% hydrolysis acetyl group.In another embodiment, polyvinyl alcohol can be a complete hydrolysis, promptly has to surpass 98%, very preferably surpasses 99% hydrolysis acetyl group.
For guaranteeing enough mechanical strengths, the degree of polymerization of vinal should be about 300～about 3000 and is preferably 700～2000, and more preferably 1300～2000, most preferably, be about 1700.
In the production of the polyvinyl alcohol resin that is used for the polyvinyl acetate saponification, may there be the impurity of sodium acetate and sodium sulphate and so in the resin.For the high-quality fiber is provided, this class impurity should remain on 0.5% (weight) of polyvinyl alcohol resin weight, below preferred 0.25% (weight).This point can realize by cleaning or extract with methanol-water.
Usually wish to make fibre staining with the pigment or the dyestuff of azo or anthraquinone and so on.The consumption of this class pigment or dyestuff should be about 0.5～3.0% (weight) of polyvinyl alcohol weight.
Towel of the present invention, spongy fabric or gauze can drop into temperature and be higher than in about 37 ℃ washing machine and handle 5～30min after use, make the polyvinyl alcohol dissolving.Preferably, in surpassing 95 ℃ washing machine, handle one section time enough, so that any potential harmful pathogen etc. is carried out disinfection.The solution that is produced is suitable for handling in the standard sewerage system.
Claims (24)
1. article, it comprises and is selected from basically a kind of in one group of article being made up of towel, spongy fabric and gauze, described article only contain at about fiber of the polyvinyl alcohol resin of water-soluble solution optionally more than 37 ℃, other features of described vinal are: degree of hydrolysis is at least about 80%, and the degree of polymerization is about 300 to 3000.
2. the article of claim 1, wherein the water-soluble temperature of vinal is higher than about 50 ℃.
3. the article of claim 1, wherein the water-soluble temperature of vinal is higher than about 70 ℃.
4. the article of claim 3, wherein said vinal is extruded by spinning solution and is made.
5. the article of claim 3, wherein said vinal is made with stretching through heat treatment by melt spinning or aquogel spinning again.
6. the article of claim 1, wherein the moisture of vinal is about 1.5～15 weight %.
7. the article of claim 1, wherein said vinal also contains a kind of antitack agent, and its amount is about 0.1～5.0 weight %.
8. the article of claim 7, wherein antitack agent is to be selected from a kind of in following one group of compound: silica, talcum, calcium carbonate and vapor phase method hydrophily silica.
9. the article of claim 1, wherein said vinal also contains the wetting agent of 0.1～2.0 weight % that has an appointment.
10. the article of claim 1, it is to be made through heat bonding, chemical adhesion, acupuncture, wet-laying or air lay by the vinal of staple fibre yarn form.
11. the article of claim 1, it also contains a kind of antistatic agent.
12. the article of claim 1, it also contains a kind of adhesive.
13. the article of claim 1, it also contains a kind of friction resistant wetting agent.
14. the article of claim 1, wherein said vinal optionally only are dissolved in the hot water that temperature is at least 90 ℃, the degree of hydrolysis of wherein said polyvinyl alcohol is at least about 98%.
15. article, it comprises and is selected from basically a kind of in one group of article being made up of towel, spongy fabric and gauze, described towel contains the fiber of the polyvinyl alcohol resin that is only soluble in about aqueous solution more than 37 ℃ selectively, the further feature of described polyvinyl alcohol is: it is to extrude the crystalline polyethylene alcohol of making through the technology of heat treatment and stretching again by spinning solution, its degree of hydrolysis is at least 98%, degree of crystallinity is at least 0.20, and the degree of orientation is at least 0.20.
16. comprising, a processing is selected from basically by towel, spongy fabric, the method of the article in a group of the gauze composition, described towel is fibrous by the polyvinyl alcohol resin that optionally is only soluble in about aqueous solution more than 37 ℃, other features of described vinal are: degree of hydrolysis is greater than about 80%, the degree of polymerization is about 300～3000, degree of crystallinity be at least 0.20 and the degree of orientation be at least 0.20, described method comprises towel, spongy fabric or gauze contact the sufficiently long time with temperature at the water more than 37 ℃, make towel, spongy fabric or gauze are dissolved in the water.
17. article, it comprises and is selected from basically a kind of in one group of article being made up of towel, spongy fabric and gauze, described article only contain at about fiber of the polyvinyl alcohol resin of water-soluble solution optionally more than 37 ℃, and other features of described vinal are: degree of hydrolysis is about 80% to 98%.
18. claim 1,15 or 17 article, wherein the degree of crystallinity of vinal is at least 0.20, and the degree of orientation is at least 0.20.
19. claim 1,15 or 17 article, wherein the molten coolant-temperature gage of vinal is greater than about 50 ℃.
20. claim 1,15 or 17 article, wherein molten coolant-temperature gage is greater than about 70 ℃.
21. claim 1,15 or 17 article, wherein said vinal also contains antitack agent, wetting agent, antistatic additive, adhesive or antifriction lubricant, or its combination.
22. the article of claim 21, wherein antitack agent is selected from silica, talcum, calcium carbonate and vapor phase method hydrophily silica.
23. claim 1,15 or 17 article, wherein vinal is made by spinning, heat bonding, chemical adhesion, acupuncture, wet-laying or air lay.
24. a method of handling the article of arbitrary claim in the aforesaid right requirement, this method comprise that described article and temperature are higher than 37 ℃ water contacts the sufficiently long time, is dissolved in the water article.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70884196A | 1996-09-09 | 1996-09-09 | |
| US08/708,841 | 1996-09-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1235650A CN1235650A (en) | 1999-11-17 |
| CN1080336C true CN1080336C (en) | 2002-03-06 |
Family
ID=24847387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97199405A Expired - Lifetime CN1080336C (en) | 1996-09-09 | 1997-09-08 | Method of disposal of hot water soluble garments and like fabrics |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0925392A1 (en) |
| JP (1) | JP2001500929A (en) |
| CN (1) | CN1080336C (en) |
| CA (1) | CA2264658A1 (en) |
| WO (1) | WO1998010126A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239186A (en) * | 2015-10-28 | 2016-01-13 | 东华大学 | Water-soluble polyvinyl alcohol fiber and preparation method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6420284B1 (en) * | 1999-03-26 | 2002-07-16 | Isolyser Company, Inc. | Poly (vinyl alcohol) wipes |
| CA2365849A1 (en) * | 1999-03-26 | 2000-10-05 | Isolyser Company, Inc. | Spunlaced poly(vinyl alcohol) fabrics |
| CN107583097A (en) * | 2017-08-23 | 2018-01-16 | 浙江红雨医药用品有限公司 | A kind of preparation method of polyvinyl alcohol fabric dressing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5620786A (en) * | 1993-04-29 | 1997-04-15 | Isolyser Co. Inc. | Hot water soluble towels, sponges and gauzes |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5181966A (en) * | 1991-04-10 | 1993-01-26 | Honeycutt Travis W | Hot water soluble packaging materials |
-
1997
- 1997-09-08 WO PCT/US1997/015800 patent/WO1998010126A1/en not_active Application Discontinuation
- 1997-09-08 CN CN97199405A patent/CN1080336C/en not_active Expired - Lifetime
- 1997-09-08 EP EP97941456A patent/EP0925392A1/en not_active Withdrawn
- 1997-09-08 CA CA002264658A patent/CA2264658A1/en not_active Abandoned
- 1997-09-08 JP JP10512976A patent/JP2001500929A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5620786A (en) * | 1993-04-29 | 1997-04-15 | Isolyser Co. Inc. | Hot water soluble towels, sponges and gauzes |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239186A (en) * | 2015-10-28 | 2016-01-13 | 东华大学 | Water-soluble polyvinyl alcohol fiber and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2264658A1 (en) | 1998-03-12 |
| CN1235650A (en) | 1999-11-17 |
| EP0925392A1 (en) | 1999-06-30 |
| JP2001500929A (en) | 2001-01-23 |
| WO1998010126A1 (en) | 1998-03-12 |
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| SE01 | Entry into force of request for substantive examination | ||
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