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Plastic drug bottle blow molding process and outside the test (1) - pharmaceutical plastic bottles, by blair zhang
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Plastic drug bottle blow molding process and outside the test (1) - pharmaceutical plastic bottles, by BLAIR ZHANG
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| Article Posted: 06/28/2010 |
| Article Views: 249 |
| Articles Written: 829 - MORE ARTICLES FROM THIS AUTHOR |
| Word Count: 656 |
| Article Votes: 0 |
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Plastic drug bottle blow molding process and outside the test (1) - pharmaceutical plastic bottles, |
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Business,Business News,Business Opportunities
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At present, China in Drugs Tablet packaging has been the progressive realization of the "plastic" on behalf of the "glass" changes, and quality medical plastic bottle of promotion and application, can not do without complete and reliable production of plastic molding equipment and a reasonable bottle shape size and precision design and a set of user requirements test meet the weight standard bottle.
Summarized market Sell Of Pharmaceutical Packaging The external shape of plastic bottles generally have round, rectangular (including square or rectangular), oval-shaped and other external shape. Application of circular largest bottle, which is characterized by the bottle wall thickness, impact energy absorption capacity of foreign higher production costs relatively low. But the round bottle when placed in storage or utilization of a lower effective area. The square or rectangular bottle storage space to the effective area of utilization, better stability, but prone to bottle Peng expansion phenomenon, affecting the quality of performance and appearance. Used in the production process equipment, pharmaceutical small plastic bottle to extrusion blow molding and injection blow molding the main body of the large bottle stretch blow by extrusion or injection stretch blow molding produced. Application of pharmaceutical packaging in plastic bottle blow molding Extrusion blow molding and injection equipment manufacturers the most. In this paper, plastic bottles currently on the market by extrusion blow molding and injection blow molding two kinds of advantages and disadvantages are reviewed and combined with the more popular nowadays medicinal injection blow molding plastic bottles dimensions of development trends and how to control Detection of plastic bottles made of white form own opinions.
1, injection blow molding and extrusion blow molding plastic bottles more medicinal
Injection blow molding and extrusion blow molding of plastic bottles is the difference between two kinds of process methods: injection molding, for molding plastic bottles of body Mold To include mold and yin yang model. Under high pressure from the injection machine to mold plastic melt into the cavity, open cavity, the sun must die away from the female molds to the top out of the bottle. In the extrusion blow molding, the extrusion die to be used to shape parison. Blow mold die mainly by the two half shade structure, generally without yang model, using compressed air blown into the parison inflation. Injection blow and extrusion blow compared to extrusion blow molding features are:
blow molding machine (especially the blow mold) and a lower cost, such as forming the same product, blow molding machines, costing about Injection molding machine Mechanical one-third or one half, and lower production costs.
blow molding, the parison is at a lower pressure through the extrusion die molding and low (mostly 0.2-1.OMPa) under Inflation, and thus lower the residual stress products resistance, tensile, impact, bending strain and the environment and other high performance, good performance. In the injection blow molding, the plastic melt in high-pressure (15140MPa) under the flow through the mold and the gate, this will lead to asymmetrical stress distribution.
blow molding grade plastics (such as PE) of molecular weight than the plastic injection molding grade much higher. This blow to the high impact toughness and high resistance to environmental stress cracking resistance, which is a large-capacity production of plastic bottles is very favorable.
blow mold because mold constituted only by the shade, so by simply adjusting the nose and gap-mode conditions can be changed or out of the wall thickness of bottles, which can not be accurately calculated in advance the necessary thickness The product is very beneficial. While injection molding, need to change the thickness of the cost of products is much higher.
thin wall thickness of blow molding products available, such products can not be molded by the injection method. I am a professional writer from China Manufacturers, which contains a great deal of information about $keyword_li, welcome to visit!
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