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How to Ensure Plastic Medical Mould and End Product Quality?

Views: 3     Author: Site Editor     Publish Time: 2018-03-29      Origin: Site

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Medical device manufacturers can easily reduce expense by choosing an injection molder experience in the medical industry. The injection molder will have the facility, equipment and trained personnel for this type of manufacturing along with relationships with vendors to provide quality materials and resources.  Included in this are the specialized moulding skills, mold design and material knowledge for a high performance medical mould product.


Quality controls are a primary requirement for medical injection mould.


When choosing plastic material for medical devices or components, design considerations are important. Material selection, production process and part geometry are interdependent.  Usage conditions such as temperature, chemical contact and resistance, applied stresses during use, transparency/opacity, color, aesthetics, water absorption, lubricity and wear resistance need to be considered.


Medical components and devices may have complex shapes that cannot be molded directly.  The plastic parts will need to be separately made and joined together with adhesives or by welding.  Changes in the plastics from welding process must be considered as well as the introduction of adhesives and the chemicals used in them. 


Also a very important material consideration for medical device and components is sterilization method and material compatibility including is this a single vs repeat sterilization process.  


Medical Grade Plastics


The effort to evaluate these factors is reduced by using the medical grades of  plastics. The manufacturers of these plastics likely already had a significant number of the studies done which means a reduction of time and cost for commercialization. 


Polyethyelene Material has low heat deflection temperatures making them unsuitable for steam and autoclave sterilization.   Applications and uses include containers, packaging films, pouches, lidstock, breather patches and headers for bags.  


Polypropylene material is adequately stabilized and can survive the radiation stabilization process with antioxidant remaining so as to protect the sterilized product from more degradation.   Polypropylene has a melting temperature high enough for autoclave applications.


Polystyrene material is a colorless, hard plastic with limited flexibility.  This can be transparent or can be made in various colors.  It is economical and used for producing plastic assembly kits, plastic cutlery, and many other common objects where a fairly rigid, economical plastic is desired.  This is not recommended for steam and autoclave sterilization, but retain their properties after exposure to one normal EtO sterilization cycle as well as gamma radiation, UV light sterilization and electron beam due to its high aromatic content.  Although some color changes have been found after e-beam sterilization.  This material has been used in diagnostic instruments and disposable laboratory ware like petri dishes, tissue culture components, flasks, pipettes and other medical devices.


Polycarbonate material is impact resistant, clear, high heat resistance, dimensional stability, resistant to UV light, flame retardant properties.  Gamma and EtO sterilization can be done.  Ultrasonic welding can be used.  Typical applications include: reservoirs, high-pressure syringes, stopcocks, luers, centrifugal force separators, blood filter housings, dialyzer housings: glucose meters, pumps, insulin pens, surgical device handles and housings.


In addition to ensuring the right selection of the plastic material, you also need to determine the high standard of the plastic medical mould, and ensure you have choosen a profesisonal medical injection molding manufacturer. Because only if the plastic medical mold gives you a high standard of medical device, you can carry out the medical activities accurately.


If you are looking for a leading China plastic medical mould manufacturer, you can send us a message to tell us your demands, and we will offer you a reasonable quotation and high quality plastic medical mould.


 We will be contact with you quickly, to study and discuss your mould requirements together.
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