A film that dissolves rapidly in the oral cavity and its preparation method
A rapid, film-based technology, applied in the field of medicine, can solve the problems of preparation prescriptions that have not been reported in the literature, tablet packaging, inconvenient transportation for patients to take medicine, and high fragility, so as to shorten the pain time, reduce the decomposition of the gastrointestinal tract, The effect of simple preparation process
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Embodiment 1
[0032] Oral fast-dissolving film disintegration time determination method:
[0033] Put 100mL of distilled water into a 100mL beaker and place it on an electromagnetic stirrer, in a constant temperature water bath at 37°C, with a stirring speed of 50r / min, take 10 sheets of medicine film (1cm×1cm) at will, one piece at a time, and clamp the test film in the clip Place in the water bath to start timing. Record the time when the film breaks, that is, the disintegration time limit of the film.
Embodiment 2
[0035] Determination of mechanical properties of oral instant film:
[0036] Using a universal material tester (Instron3365), the film was cut to a size of about 2cm×0.5cm (balanced at 43%RH for a week), and the tensile speed was 5mm min -1 , each film is stretched longitudinally until the film breaks. Calculation of mechanical properties such as elastic modulus (EM) and elongation percentage (E%) of oral instant film is as follows. The elastic modulus refers to the ratio of the applied stress to the strain force during the elastic deformation stage, which can be calculated using the following formula:
[0037] Modulus of elasticity = Applied stress / Strain force / Cross-sectional area
[0038] The percentage extension is calculated by the following formula:
[0039] Elongation percentage = length at break - original length / original length x 100
Embodiment 3
[0041] components content Hydroxypropyl Methyl Cellulose (5 centipoise) 3g glycerin 0.3 mL active ingredient Appropriate amount purified water 15mL
[0042] Specific operation process: disperse hydroxypropyl methylcellulose (5 centipoise) in purified water under stirring, fully disperse and dissolve to obtain a gel, add the prescribed amount of glycerin, add active ingredients while stirring, fully disperse, and degas , the above-mentioned gel is uniformly coated on a flat plate by an automatic coating machine, blasted, heated and dried at a heating temperature of 60° C., and cut to obtain an oral instant film. The film is transparent and light yellow in color, with good release performance and general flexibility. The disintegration time limit is 92s.
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