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Composite film packaging of drugs, solvent residues bags


Not obvious. Moreover, the cost of production will rise by 6%, the most serious is that residual solvent would increase drastically. Lu Lv Zhiqiang jump on the glue dry (g / m) Figure 1, the amount of the corresponding composite plastic peel strength curve NOTE: Test conditions: machine speed 120m/min, drying temperature 60qC ~ 95qC-80qC ~ 70qC drying tunnel length of 6.5m, curing temperature 45qC, ripening time 36h. Two-component solvent-based compound used in polyurethane adhesive should be in the proper temperature and time can be achieved under the conditions of cross-linked reaction, the composite product has a high tack holding, but also further dispel the complex process of residual solvent. Figure 2 is the corresponding aging time curve of peel strength of composites. Which the aging time at different testing products using gas chromatography solvent residue before ripening in the test product residue is 3.9 (continued on page 43) Electrical and Information 1, 2005, 41 requires 85 total small (just a standard coating plant and a pot), saving materials and energy, so the overall cost calculation is not higher than the packet sugar. Based on these advantages, the domestic film coating technology is in an accelerated process of film coating of the market prospect is very broad, coating materials and coating technologies improve and perfect innovation is imperative. If the characteristics of clothing cover film 2 due to the current international and domestic film coating materials used are synthetic or semi-synthetic polymer materials, the synthesis process caused serious pollution to the environment and taking on the health hazards, has caused people attention. Advocating the return to nature has become a fashionable green, protected by natural peel delicate fruits and glossy, bright color, fruity and pleasant, inspired, according to the pericarp is rich in natural plant fiber, phlegmatic, pectin and other film role has a good pure natural polymer material, after the polymer material of the structure of these natural transformation treatment,[link widoczny dla zalogowanych], coating formulation, process optimization of the design, development of pure natural \with the synthetic polymer film coating agent of the advantages, there are the following features. 2.1 The natural fruit in the film material from the dehydration of natural cellulose is composed of glucose units ring chain linear molecules. 2.2 perfect fruit coat film former formulation with orthogonal experimental design and computer-aided simulation of thin film coating method of combining formula to simulate a specific recipe, easy to operate,[link widoczny dla zalogowanych], and can change the variable recipes after the designer of the results, which can optimize formulations. 2.3 a natural medicinal and edible materials, safe and nontoxic current international and domestic film coating materials used are synthetic and semi-synthetic polymer material,[link widoczny dla zalogowanych], and preparation of the health hazards of environmental pollution concern, fruit clothing natural skin membrane is mainly as raw material, after special processing, with the current body advocating green, back to nature, adapt to green consumption. 2.4 pleasant refreshing natural fruit ignorant of synthetic polymer material giving a total discomfort, the use of fruit coat film, clothing represent the natural fruit color, smooth and delicate, fruity and pleasant. Quality is the core piece of film coating of the main technical factors. The mechanical properties of the core pieces, especially the hardness, wear resistance, the regularity of contour and surface coating on the effectiveness of films played a major role, there is choice involved in tablet formulation of adhesives, particle size, moisture content, pressed mechanical properties, such as pressure and other relevant physical chemistry, chemical engineering research, particularly in traditional Chinese medicine tablet extracts and herbs are mostly extracted powder is made, the degree of difficulty greater than the chemical pills, so the emphasis on core services for the drug, all to best meet the core requirements as the standard drug, which is being advocated by international experts on the latest concept of film coating technology. gg Yue Nang each drug (Continued from page 41) 024 487 296 aging time / h Figure 2 aging time curves corresponding to the peel strength composite NOTE: Test conditions: 75% glue, viscosity 6400cp, curing temperature 450 (2. mg / m,[link widoczny dla zalogowanych], residues after 48h maturation stable, and they branch for a long time is not meaningful,[link widoczny dla zalogowanych], but will make composite products has been damaged. From the experimental point of view to solve the focus of residual solvent in the composite and curing processes. in the development of process technology roadmap should be fully validated and reliable , control elements including the compound on the resin content and dry (including aging) temperature and mechanical speed. Despite the adoption of hard, composite products are often still smell the strong pungent smell even while detecting residual solvent indicators also qualified, at this time the quality of raw materials will expose the problem of glue. The reason is the lack of composite glue in the production of isocyanate-based extraction work, although the composite strength of the product without too much impact, but the role of odor and toxicity can not be ignored, while optimization quality of the glue is also very important. Electrical and Information 1, 2005 VOLUME 85 4354321
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