CN1333126C - Method for preparing hemostatic fiber non-woven cloth - Google Patents
Method for preparing hemostatic fiber non-woven cloth Download PDFInfo
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- CN1333126C CN1333126C CNB2004100581345A CN200410058134A CN1333126C CN 1333126 C CN1333126 C CN 1333126C CN B2004100581345 A CNB2004100581345 A CN B2004100581345A CN 200410058134 A CN200410058134 A CN 200410058134A CN 1333126 C CN1333126 C CN 1333126C
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Abstract
The present invention relates to a process for producing materials for medical purposes, specifically a process for producing anti-hemorrhagic fiber nonwoven cloth. Said process comprises preparation of anti-hemorrhagic fiber, fleece formation of anti-hemorrhagic fiber and a thermal reinforcement after the fleece formation, and is characterized in that the moisture percentage of the anti-hemorrhagic fiber webs after the fleece formation is 18-50%, the humidifying temperature is 4-25%, and then the anti-hemorrhagic fiber meshwork is executed a thermal reinforcement by using hyperfrequency waves, with a heating temperature of 45-95 DEG C. The present invention breaks the conventional thought and recognition of heating modes in nonwoven cloth thermal reinforcement process, changes the thinking inertial property about heating modes, and proposes a bran-new heating mode-microwave heating in the nonwoven cloth field. And the microwave heating can generate protruding technology effect, in other words, the intensity of anti-hemorrhagic fiber nonwoven cloth is improved. Then, the anti-hemorrhagic fiber nonwoven cloth satisfies the requirement when used as medical application materials, and their applications in medical application field can be enlarged and extended.
Description
Technical field
The present invention relates to a kind of preparation method of medical material, be specially a kind of preparation method of hemostatic fibre non-woven fabric, particularly the thermal consolidating method of hemostatic fibre non-woven fabric.
Background technology
Compound gelatin fiber (original name stanch fibre) is the typing NF.It contains gelatin, polyvinyl alcohol, Halomine, sweetgum leaf extract.Since coming out, with its hemostasis rapidly, can absorption, anti-inflammatory, nontoxic pair of distinguishing feature such as effect, become a kind of novel medical material.Owing to be flocculence, have clinical poor operability, fly shortcoming such as hair, thereby influenced application and the popularization of stanch fibre aspect medical material without the stanch fibre of deep processing.
The patent No. is that 99114610.7 patent documentation has related to " hemostatic fibre non-woven fabric and preparation method thereof ".Make a general survey of the technology contents of relevant preparation method in the above-mentioned patent documentation, it mainly stresses some technological parameters of stanch fibre wet spinning, the proportioning of material therefor etc.; Relevant non-weaving cloth preparation method's content, in its specification or claims, only mention " ... wet spinning process is made the semi-finished product fiber; use the non-weaving cloth processing method again; make hemostatic fibre non-woven fabric ... ", " it is characterized in that after postprocessing working procedures, adopt the non-weaving cloth processing method.", " it is characterized in that the non-weaving cloth processing method that is adopted is an air-laid process ... ".As seen, what the non-weaving cloth preparation method behind its spinning process adopted is existing known method, (heat) reinforcement means that does not particularly relate to non-weaving cloth in its preparation method, therefore, its intensity of hemostatic fibre non-woven fabric made from the described preparation method of above-mentioned patent is still lower, still can't satisfy the requirement of medical material.
The preparation process of non-weaving cloth generally comprises: fiber is prepared, and fiber becomes net, fiber reinforced.And fiber reinforcedly comprise mechanical consolidation, chemical consolidation and thermal consolidating; The composition of stanch fibre has determined it to have certain fragility, is not suitable for mechanical consolidation; And chemical consolidation need be added other chemical substance (as adhesive, solvent etc.), and is used for other harmful chemicals of hemostatic fibre non-woven fabric absolute prohibition interpolation of human body; Existing various its heating-up temperature of thermal consolidating method is difficult to regulate, control, owing to contain property of medicine composition in the stanch fibre, the property of medicine composition in the too high stanch fibre of temperature is destroyed, and temperature is crossed the low effect that does not have thermal consolidating again, brings inconvenience to operation.
Microwave is applied in a lot of fields as a kind of heating source, but in the non-weaving cloth technical field, particularly the relevant report that carries out thermal consolidating with heating using microwave is not seen in the hemostatic fibre non-woven fabric field.
Summary of the invention
It is low with the hemostatic fibre non-woven fabric intensity of prior art for preparing that the present invention solves, thereby influence it as the problem that medical material uses, and provides a kind of preparation method of new hemostatic fibre non-woven fabric, to prepare the higher hemostatic fibre non-woven fabric of intensity.
The present invention adopts following technical scheme to realize: the preparation method of hemostatic fibre non-woven fabric, comprise stanch fibre preparation, stanch fibre the one-tenth net with become net after thermal consolidating, the moisture content that makes into the stanch fibre net behind the net is 18%-50%, humidification temperature is 4-25 ℃, with microwave the stanch fibre net is carried out thermal consolidating then, heating-up temperature is 45-95 ℃.
Microwave is to heat from material inside, and has that firing rate is fast, the characteristics of homogeneous heating, is heated simultaneously inside and outside can making the stanch fibre net apace, makes each crosspoint bonding of stanch fibre net, makes the puffy hemostatic fibre non-woven fabric.Because the thermal inertia of heating using microwave is little, be heated inside and outside the stanch fibre net, the dissolving of each infall, bonding, drying be to finish in moment, and heating back fiber web fast cooling, like this, both guarantee the thermal consolidating of hemostatic fibre non-woven fabric, do not damaged the property of medicine composition in the stanch fibre again.
In the thermal consolidating technology of non-weaving cloth, continue to use traditional thermal consolidating mode for many years always, as belong to Convective Heating hot air type, belong to the steel roll mode of heating of conduction heating.And the present invention has broken through in the non-weaving cloth thermal consolidating technology traditional thinking, traditional understanding to mode of heating, changed the thinking inertia of mode of heating, a kind of brand-new mode of heating---heating using microwave that is concerning the non-weaving cloth field has been proposed, and heating using microwave can produce outstanding technique effect, promptly improved the intensity of hemostatic fibre non-woven fabric, make hemostatic fibre non-woven fabric satisfy requirement, make hemostatic fibre non-woven fabric be able to promote the use of on a large scale in medical field as medical material.
Stanch fibre is water-soluble bondable fibers, only has suitable moisture content and could make each crosspoint in the fiber web realize that in the thermal consolidating process thermosol is sticking.
Hemostatic fibre non-woven fabric preparation method's, particularly its heating using microwave of the present invention reinforcement means has following outstanding advantage: the first, and firing rate is fast.It all is that hot conduction, convection current, heat radiation at first pass to the surface that is heated fibre web with heat that conventional mode of heating is reinforced in the non-weaving cloth heat bonding, progressively makes central temperature raise (i.e. the external heat of normal title) by the heat conduction again.It will make the centre reach temperature required, needs certain heat conduction time, and just longer to the fiber required time of pyroconductivity difference.Heating using microwave then belongs to inner mode of heating.Electromagnetic energy directly acts on the fiber molecule medium and converts heat energy to, and transmission is heated inside and outside making fiber medium simultaneously, does not need the heat conduction, so can reach even heating at short notice.The second, homogeneous heating.When heating,, just need the rising external temperature, strengthen temperature gradient for improving firing rate with the external heat mode.Yet just be easy to generate scorched outside and underdone inside phenomenon thereupon.During heating using microwave, microwave can both uniformly penetrating, produce heat, so uniformity is improved greatly.The 3rd, efficient energy-saving.Because the reflectivity of microwave promptly runs into the just reflection of conductor such as metal object, as the specularly reflected light wave, metal does not absorb microwave, and the microwave that utilizes this characteristic can control microwave heating equipment is revealed.Therefore use the thermal losses of the microwave heating equipment that does not absorb the microwave material manufacturing itself minimum.The 4th, be easy to control.Because only to object heating itself, body of heater heats hardly, so thermal inertia is minimum when heating, promptly opening promptly has.Be easy to automation control especially.The 5th, sanitation and hygiene.Because microwave energy is a kind of radiant energy, when using the microwave heating effect heating object,, there is not other media to participate in sanitation and hygiene only to object heating itself.When especially curable product being heated a kind of good energy.The 6th, the selectivity heating.Fibrous material of different nature is to the absorption loss difference of microwave, and promptly selectivity heats characteristics, and is favourable to dry run.Because hydrone is to the absorption loss maximum of microwave, so the high position of moisture absorb microwave power more than the low position of moisture, thereby rate of drying reaches unanimity.The 7th, safe and harmless.Because the reflectivity of microwave, promptly run into the just reflection of conductor such as metal object, as the specularly reflected light wave, metal does not absorb microwave, the microwave that utilizes this characteristic can control microwave heating equipment is revealed, the leakage of energy is minimum, and microwave do not have radiation hazard and noxious gas emission, is a kind of foolproof heating technique.
The specific embodiment
Embodiment 1
The preparation method of hemostatic fibre non-woven fabric, comprise stanch fibre preparation, stanch fibre the one-tenth net with become net after thermal consolidating, the moisture content that makes into the stanch fibre net behind the net is 25%, humidification temperature is 10 ℃, with microwave the stanch fibre net is carried out thermal consolidating then, heating-up temperature is 50 ℃.The humidification of stanch fibre net adopts excusing from death ripple humidifier, like this, the fiber web humidification evenly, damaged fiber net not.
Certain at heating using microwave power, under the known preceding topic of the dielectric constant of stanch fibre net weight known and heated stanch fibre net temperature known, that will reach, can easily debug, calculate the time of heating using microwave, this is to realize very easily to one skilled in the art.
The microwave frequency that the heating stanch fibre uses is microwave frequency 915 megahertzes and 2450 megahertzes that China is used for the industry heating at present.
Embodiment 2
The preparation method of hemostatic fibre non-woven fabric, comprise stanch fibre preparation, stanch fibre the one-tenth net with become net after thermal consolidating, the moisture content that makes into the stanch fibre net behind the net is 40%, humidification temperature is 25 ℃, with microwave the stanch fibre net is carried out thermal consolidating then, heating-up temperature is 70 ℃.
Embodiment 3
The preparation method of hemostatic fibre non-woven fabric, comprise stanch fibre preparation, stanch fibre the one-tenth net with become net after thermal consolidating, the moisture content that makes into the stanch fibre net behind the net is 50%, humidification temperature is 5 ℃, with microwave the stanch fibre net is carried out thermal consolidating then, heating-up temperature is 90 ℃.
Claims (1)
1, a kind of preparation method of hemostatic fibre non-woven fabric, comprise stanch fibre preparation, stanch fibre the one-tenth net with become net after thermal consolidating, it is characterized by: the moisture content that makes into the stanch fibre net behind the net is 25%-50%, humidification temperature is 4-25 ℃, with microwave the stanch fibre net is carried out thermal consolidating then, heating-up temperature is 45-95 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100581345A CN1333126C (en) | 2004-04-28 | 2004-08-16 | Method for preparing hemostatic fiber non-woven cloth |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410012265.X | 2004-04-28 | ||
| CN200410012265 | 2004-04-28 | ||
| CNB2004100581345A CN1333126C (en) | 2004-04-28 | 2004-08-16 | Method for preparing hemostatic fiber non-woven cloth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1580344A CN1580344A (en) | 2005-02-16 |
| CN1333126C true CN1333126C (en) | 2007-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100581345A Expired - Fee Related CN1333126C (en) | 2004-04-28 | 2004-08-16 | Method for preparing hemostatic fiber non-woven cloth |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4952618A (en) * | 1988-05-03 | 1990-08-28 | Minnesota Mining And Manufacturing Company | Hydrocolloid/adhesive composition |
| CN1068158A (en) * | 1992-07-18 | 1993-01-20 | 纺织工业部纺织科学研究院 | The method for making of absorbable hemostatic dressing |
| CN1157355A (en) * | 1996-10-21 | 1997-08-20 | 山西省化学纤维研究所 | Styptic fibre composition and its air-drawing process |
| CN1223316A (en) * | 1999-01-11 | 1999-07-21 | 周一心 | Hemostatic fibre non-woven fabric and preparation process |
| US6723497B2 (en) * | 2000-02-10 | 2004-04-20 | The Regents Of The University Of California | Therapeutic platelets and methods |
-
2004
- 2004-08-16 CN CNB2004100581345A patent/CN1333126C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4952618A (en) * | 1988-05-03 | 1990-08-28 | Minnesota Mining And Manufacturing Company | Hydrocolloid/adhesive composition |
| CN1068158A (en) * | 1992-07-18 | 1993-01-20 | 纺织工业部纺织科学研究院 | The method for making of absorbable hemostatic dressing |
| CN1157355A (en) * | 1996-10-21 | 1997-08-20 | 山西省化学纤维研究所 | Styptic fibre composition and its air-drawing process |
| CN1223316A (en) * | 1999-01-11 | 1999-07-21 | 周一心 | Hemostatic fibre non-woven fabric and preparation process |
| US6723497B2 (en) * | 2000-02-10 | 2004-04-20 | The Regents Of The University Of California | Therapeutic platelets and methods |
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| Publication number | Publication date |
|---|---|
| CN1580344A (en) | 2005-02-16 |
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Granted publication date: 20070822 Termination date: 20110816 |