Focus on Medical Plastic Products "Three High" High Security as the Most Important (2)
http://www.ecppn.com
2016-12-15 10:31:08
Medical plastics
Plastic as a medical material, usually should meet the following requirements: the body is non-toxic, non-carcinogenic, does not cause allergic reactions or interfere with the body's immune mechanism; implanted material biocompatibility is better; contact with blood materials, Have a certain anticoagulant properties; can withstand the disinfection process without deformation and so on.
The research on PVC substitute materials is a hotspot in recent years. PVC is currently used in the medical industry and the largest amount of polymer, but it may release phthalates, will cause potential harm to human health. TPU, is considered a safer alternative material. First of all, TPU's biological properties, mechanical properties and processing performance and PVC are comparable, and do not need to be flexible through the plasticizer, there is no risk of phthalate migration. In addition, the TPU has sufficient hardness before insertion into the human body, and the flexible property after entry into the human body ensures the comfort of the patient. However, the medical grade TPU expensive, is mainly used in high value-added precision interventional catheter, artificial heart aids, artificial blood vessels. Due to the high purity, high reaction conditions and demanding process conditions, the production technology is concentrated in only a few foreign companies, such as BASF, KS (formerly Bayer MaterialScience), Lubrizol, Dow Chemical and Hens Mai and so on.
The demand for organic silicon materials in the medical field is also increasing. Compared with PVC, its anti-infection, sealing adhesive, waterproof, non-irritating and so has obvious advantages. Dow Corning, Blue Star Silicones and WACKER, and other companies in this area of considerable achievements. WACKER introduced SILPURAN® Film, which allows gas such as water vapor and oxygen to diffuse through the film. It can be used to produce breathable adhesive tape for wound healing, such as artificial heart-lung machines. The device used as breathable film.
In addition to demanding production materials, medical plastic products, processing equipment requirements are very strict. Especially for the use of the environment with special requirements of the test class, testing class, container class and organ type and other medical products, in the molding must use clean room. Many processing equipment suppliers have developed a number of solutions for this purpose. Netstal, for example, has developed special rules and procedures for the design and manufacture of medical injection molding machines, with a separate clean room injection molding machine production area, specially trained for the injection molding of clean rooms Machine assembly. It also offers a variety of special configurations, including: water-cooled drive motor to avoid the formation of air-cooled vortex airflow; moving template, the template surface treatment of special alloy coating; FDA-compliant non-toxic hydraulic oil.
Plastic as a medical material, usually should meet the following requirements: the body is non-toxic, non-carcinogenic, does not cause allergic reactions or interfere with the body's immune mechanism; implanted material biocompatibility is better; contact with blood materials, Have a certain anticoagulant properties; can withstand the disinfection process without deformation and so on.
The research on PVC substitute materials is a hotspot in recent years. PVC is currently used in the medical industry and the largest amount of polymer, but it may release phthalates, will cause potential harm to human health. TPU, is considered a safer alternative material. First of all, TPU's biological properties, mechanical properties and processing performance and PVC are comparable, and do not need to be flexible through the plasticizer, there is no risk of phthalate migration. In addition, the TPU has sufficient hardness before insertion into the human body, and the flexible property after entry into the human body ensures the comfort of the patient. However, the medical grade TPU expensive, is mainly used in high value-added precision interventional catheter, artificial heart aids, artificial blood vessels. Due to the high purity, high reaction conditions and demanding process conditions, the production technology is concentrated in only a few foreign companies, such as BASF, KS (formerly Bayer MaterialScience), Lubrizol, Dow Chemical and Hens Mai and so on.
The demand for organic silicon materials in the medical field is also increasing. Compared with PVC, its anti-infection, sealing adhesive, waterproof, non-irritating and so has obvious advantages. Dow Corning, Blue Star Silicones and WACKER, and other companies in this area of considerable achievements. WACKER introduced SILPURAN® Film, which allows gas such as water vapor and oxygen to diffuse through the film. It can be used to produce breathable adhesive tape for wound healing, such as artificial heart-lung machines. The device used as breathable film.
In addition to demanding production materials, medical plastic products, processing equipment requirements are very strict. Especially for the use of the environment with special requirements of the test class, testing class, container class and organ type and other medical products, in the molding must use clean room. Many processing equipment suppliers have developed a number of solutions for this purpose. Netstal, for example, has developed special rules and procedures for the design and manufacture of medical injection molding machines, with a separate clean room injection molding machine production area, specially trained for the injection molding of clean rooms Machine assembly. It also offers a variety of special configurations, including: water-cooled drive motor to avoid the formation of air-cooled vortex airflow; moving template, the template surface treatment of special alloy coating; FDA-compliant non-toxic hydraulic oil.
