Calcium Alginate Sponge Medical Dressing Freeze Dryer
Calcium Alginate Sponge Medical Dressing Freeze Dryer
The method for preparing a calcium alginate sponge medical dressing by means of a lyophilizer comprises the following steps:
1 Preparation of sodium alginate blend solution According to the mass of distilled water 4. 2% 5. 4% weighed sodium alginate, and added it to distilled water to stir and dissolve uniformly to obtain a solution of low molecular weight sodium alginate. Then, high molecular weight sodium alginate was weighed according to the mass of distilled water of 0.6% 1.8%, added to the above solution, and stirred at room temperature until dissolved uniformly to obtain a sodium alginate blend solution.
2 Preparation of sodium alginate sponge The sodium alginate blending solution prepared in step A is placed in a cryostat, and the solution is cooled while mechanically stirring. The solution is cooled to 0 ° C and 5 ° C to stop stirring and dispensed into the mold. The mold was placed in Shanghai Tuo-86 degree ultra-low temperature freezer for pre-freezing. The pre-freezing temperature was -80 °C -10 °C, and the pre-freezing time was 15 h. After the pre-freezing, the mold was placed in the Shanghai Tuoba Freeze Dryer TF- In SFD-5, the drying temperature was -50 ° C - 20 ° C, the degree of vacuum was 20 or less, and the treatment time was 6 36 h. After drying, the mold was released to obtain a shaped sodium alginate sponge.
3 Preparation of calcium alginate sponge According to 2% 5% of the mass of ethanol, weigh the softener, add the weighed softener to the ethanol, stir until it is evenly mixed, and obtain a mixed solution of ethanol and softener, and then according to the quality of ethanol. 3% 6% of the calcium chloride is weighed, and the weighed calcium chloride is added to the above mixed solution to be stirred and dissolved to obtain a coagulation bath of the sodium alginate sponge, and the sodium alginate sponge obtained in the step B is immersed in the coagulation bath. Cross-linking curing, cross-linking curing temperature is 25 ° C ~ 40 ° C, cross-linking curing time is 15 h, after the completion of curing, the sponge is placed in the air to dry naturally to obtain calcium alginate sponge;
4 Preparation of Calcium Alginate Sponge Dressing The calcium alginate sponge obtained in the step C was cut, packaged, and then sterilized by Co6° irradiation to obtain a calcium alginate sponge medical dressing.
Parameters
Model | KZG-15 |
Shelf area (m2) | 14.4 |
Shelf quantity (pcs) | 10+1 |
Heating medium | Silicone oi |
Temp. range (℃) | RT -120℃ |
Water capture capacity (KG) | 300 |
Lowest Condenser temp. (℃) | -60 |
Ultimate vacuum (Pa) | 10Pa |
Install power (KW) | 46 |
Cooling type | Air cooled/Water cooled |
Weight(ton) | 13 |
Warranty:
1.We guarantee that the commodity hereof is made of the best materials and new brand with top workmanship, and in accordance with quality specification stipulated in product Contract and Appendix.
2. Guarantee period shall be within 12 months from the date of acceptance. During this period, if there are quality problems, we will provide solution by verbal or written communication.
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