片剂的制备工业药剂

1、PurposeIntroductionEquipments and MaterialsProceduresExperimental InstructionsQuestionsTest report Purpose 1. To master the basic technological course of tablets through the preparation of aspirin tablets.2. To be familiar with the quality control of tablets.3. To be familiar with the basic structur

2、e and operation method of single-punch.Introduction Tablets are solid preparations of various shapes, usually round, and obtained by compressing uniform volumes of particles containing one or more active ingredients with suitable excipients.Introduction - tablet typesSome of the pharmaceutical table

3、t types based on the way of administration or presentation to the patient are listed on the right:1. Simple uncoated tablets2. Coated tablets3. Effervescent tablets4. Buccal and sublingual tablets5. Chewable tablets6. Multilayered tablets7. Sugarcoated tablets8. Fast-disintegrating tablets9. Vaginal

4、 tablets10. Osmotic tablets11. Controlled-release tablets12. Multicomponent tabletsIntroduction - tablet designTablet formulation design starts with a predetermined value, which is the dose size. Tablet design is based on the experience and knowledge of excipients, which are materials serving the pu

5、rpose of making a good tablet when combined with a drug.Introduction - tablet designTablet excipients can be classified on the basis of their functionality as listed below:1. Fillers/diluents2. Binders3. Disintegrants4. Lubricants5. Glidants6. Buffering agents7. Sweeteners8. Wetting agents9. Coating

6、 agents10. Matrix formersIntroduction - manufacturing processesDeciding on a manufacturing method is a complex task that requires time, equipment, and formulation optimization, as well as a close collaboration between formulation scientists and process engineers. In general terms, there are three ma

7、nufacturing processes for tablets: wet granulation, dry granulation, and direct compression.Introduction - manufacturing processesThe purpose of wet granulation is to convert the drug and excipient mixture into granules that flow well into dies, and which are compressible into mechanically strong an

8、d acceptable tablets. 1. flowability 2. compressibilityWet granulation compression method has been widely used in tablets production, especially for drugs resistant to wet and heat. Introduction - manufacturing processesThe steps of wet granulation1 Premixing drug with other ingredients using a mixe

9、r. 2 Transferring the mixture into a traditional low shear granulator where a binder solution is added under a mechanical shear until a certain damp mass and a certain granule size are obtained.3 Wet sieving of granules through a desired screen size.4 Drying of granules in a tray-oven dryer.5 Dry si

10、eving/milling of granules to a certain particle size distribution.6 Adding a lubricant to the dry granules.7 Compressing the granules into tablets.Introduction - manufacturing processesThe steps of wet granulation 混合压片填充剂黏合剂崩解剂API辅料粉碎和过筛制软材干燥整粒混合制湿粒润滑剂崩解剂湿法制粒压片工艺流程Introduction - manufacturing proces

11、sesEquipments and Materials Equipments: electronic balance, single-punch press, nylon sieve (16 and 18 mesh), punch (9.5mm shallow concave punch), etc . Materials : aspirin (in granule crystal), tartaric acid, talcum powder, starch, concentrated hydrochloric acid, sodium hydroxide, distilled water,

12、etc.Procedure1. Preparation of aspirin tablets(1) Formulation (weight in 100 tablets) Aspirin30 g Starch 2 g Tartaric acid 0.2 g 10% starch paste qs Starch 1 g Talcum powder 1.5 g(2) Preparing processesPreparing 10% starch paste: Heating the aqueous dispersion of starch ( 2 g starch and 0.2g tartari

13、c acid in 20mL water) at 80 for 15 min. Grinding aspirin to pass the sieve of 80 meshes. Mixing aspirin powder with starch.Adding 10% starch paste to prepare a damp mass. Screening the damp mass through a nylon sieve of 18 meshes into granules. Drying of the wet granules at 60 for 15 min.Dry sieving

14、 of granules through 16 meshes.Adding starch and talcum powder to dry granules with blending uniformly.Compressing the granules into tablets.制软材制湿粒研磨混合干燥整粒压片混合制淀粉浆single-punch pressrotary tablet press2. Single-punch pressmanual driving wheel hopper feed shoe cam gearing core components die (模圈) lowe

15、r punch (下冲) upper punch (上冲) 3. Installing of single-punch press(1)Installing of core components Installing of the lower punch安装下冲： 旋松下冲固定螺钉，转动大皮带轮使下冲芯杆升到最高位置，将下冲插入下冲芯杆的孔中（注意使下冲杆的缺口斜面对准下冲紧固螺钉，并要插到底）最后旋紧下冲固定螺钉。 Installing of the lower punch安装上冲：旋松上冲紧固螺母，将上冲插入上冲芯杆的孔中，要插到底，旋紧上冲紧固螺母。 Installing of the

16、mould安装中模：旋松中模固定螺钉，将中模拿平放入中模台板的孔中，旋紧中模固定螺钉。缓缓转动大皮带轮，调整中模台板的位置，使上冲进入中模孔中，旋紧中模台板固定螺钉。(2) Adjustment of out-of-tablets 出片调整 转动大皮带轮使下冲升到最高位置，观察下冲口面是否与中模平面相齐（或高或低都将影响出片），若不齐则旋松蝶形螺丝，松开齿轮压板转动上调节齿轮，使下冲口面与中模平面相齐，然后将压板按上，旋紧蝶形螺丝。 用手转动大皮带轮，空车运转若正常，则可加料试压，进行下一步调整。(3) Adjustment of tablet weight片重调节 旋松蝶形螺丝，松开齿轮压板

17、。转动下调节齿轮向左转使下冲芯杆上升，则充填深度减少（药片重量减轻）。调节好后将轮齿压板按上，旋紧蝶形螺丝。(4) Adjustment of tablet hardness硬度调节 旋松连杆锁紧螺母、转动上冲芯杆，向左转使上冲芯杆向下移动，则压力加大，压出的药片硬度增加；反之，硬度降低。调节好后用扳手卡住上冲芯杆下部的六方，将连杆锁紧螺母锁紧。4. Tablet compression压片 冲模的安装、调试完成后，即可启动电机试压，检查片重、硬度和表面光洁度等，质量如合格，即可投料批量生产。 在生产过程中仍须随时检查药片质量，及时调整。5. Quality control of tablet

18、s After manufacturing tablets, a series of tests are carried out to assure that they meet the specifications of pharmacopoeia or industry standards. These tests are as listed on the right:WeightWeight variationDisintegrationHardnessFriabilityDissolutionDrug content uniformityThickness(1) Tablet weig

19、ht and weight variation The quantity of fill placed in the die cavity of a tablet press determines the weight of the resulting tablet. Weight variation: sample amount 20 tablets. Tablets should comply with the following requirements stated in the table below.Average weightWeight variation limitLess

20、than 0.3 g 7.5%0.3 g or more 5%(2) Tablet hardness In general, tablets should be sufficiently hard to resist breaking during normal handling, packaging and shipping, and yet soft enough to disintegrate properly after swallowing. Hardness of the tablet is controlled by (or is affected by) the degree

21、of the pressure applied during the compression stage. (2) Tablet hardness Sample amount 4 tablets.(3) Tablet disintegration test Tablets must be tested to ensure disintegration. The CP, BP, USP and EP have official standards, including descriptions of the apparatus type dimensions and test condition

22、s.(3) Tablet disintegration test Sample amount 6 tablets.(4) Tablet friability This test shows the strength of tablets against mechanical attrition. Method: allowing the tablets to roll and fall within the rotating apparatus (friabilator); determine the loss in weight; Requirement: weight loss 1%(4)

23、 Tablet friabilityExperimental Instructions1. Aspirin acid should be milled and forced through screen (80 mesh), then mix with excipients, usually we use the method that mass increased as others increased, screen and mix several times to insure uniformly mixed. 2. The dosage of adhesives should be a

24、ptitude to make the soft material be conglomeration in hand and when fingers press it slightly, it should disperse but does not turn into powders. Purpose 1. To master the basic technological course of tablets through the preparation of aspirin tablets.2. To be familiar with the quality control of tablets.3. To be familiar with the basic structure and operation method of single-punch.Introduction - tablet designTablet excipients can be classified on the basis of their functionality as listed below:1. Fillers/diluents2. Binders3. Dis