The new blow molding technology opens the channel for medical manufacturers to use TPE materials
The new blow molding technology opens the channel for medical manufacturers to use TPE materials
New Jersey's in September 20, 2016 - FGH Systems, Inc., and Teknor Apex company developed is suitable for the mass extrusion blow molding of thermoplastic elastomer material, equipment, tooling and mold technology, so that the nitrile rubber latex and be replaced by more efficient and cheaper alternatives are possible.
Teknor Apex and FGH Systems, improve the technologies in the years of cooperation, in order to solve elastic material in extrusion blow molding, hollow due to breathing bag and other medical equipment brought by the design complexity of the problem. These techniques ensure the continuous and steady production of high quality components in key applications.
On a variety of chemicals and polymer blending, after strict test Teknor Apex opened a standard blow molding compound Medalist ® 12445 MD, is used to replace rubber, NBR/PVC. Equipment modification, tooling and mold design work is in FGH Systems, New Jersey carried out in the factory, the factory is a professional factory in the field of blow molding, represents the many famous OEM equipment, at the same time also operates a mold workshop, more than a product development laboratories, and experiment processing production line.
Owner of FGH Systems, Eric Hohmann, points out that due to split the breathing bag when not in use must fold, while when gas formation thickness uniform circular "balloon", thus has caused difficulties in design and processing. Mr Hohmann said: "although all kinds of TPE, especially TPV has been suitable for car, the gear rack shrouds and piping components such as the injection blow molding process of the use, but for a long time, extrusion blow molding is usually adopted HDPE, PP and PVC resin and other hard or inelastic. For the breathing bag, the problem is to use eight cavity moulds to produce complex parts in continuous extrusion process.
In addition to developing the design that can solve these problems, FGH Systems also provides a name for the commercial production of Milacron. Uniloy? The shuttle blow molding equipment. Hohmann said: "in order to improve the TPE injection molding technology, in our own factory test production line and customers, many trials and tried all kinds of plastic injection molding machine, bolt, the extrusion and mould design, as well as the Teknor Apex offers a variety of Medalist formula. Due to our success, the extrusion blow molding of TPE can now be applied to the complicated design of other hollow parts, bottles or bags in medical equipment and other industries.
Although injection molding can produce hard parts, blow molding can produce hollow parts in no core mold, this process can use compressed air to make molten plastic parison is stuck in the mold wall, formation of finished parts. Teknor Apex TPE group control products, a senior marketing manager Ross Van Royen pointed out: "extrusion blow molding is the key to control of the parison wall thickness, and the raw materials of any discrepancy will affect the quality of parison. If the viscosity is too high, melt fracture will occur during blow molding. If the viscosity is too low, the blank will be unstable. Teknor Apex developed specifically for extrusion blow molding Medalist MD 12445 compounds, its high melt strength, can achieve good parison forming performance and consistent flow characteristics, and can improve the stability of the parison. At the same time, products made with this compound exhibit the same elasticity, appearance and tactility as latex.
The Medalist MD 12445 compound has A hardness of 45, but Teknor Apex can also develop softer or harder compounds for specific applications. The new compound can be sterilized by gamma rays or ethylene oxide. It shows high levels of tear resistance.
From the impregnation molding to the economic benefit of extrusion blow molding
The breathing bag is used to control the flow of air to patients during the operation during anesthesia. They are disposable items that can be inflated by compressed air. There are different sizes to accommodate patients of different types or ages.
In the past, these respirations were made using natural rubber latex, through a process called "impregnated molding". Although protein allergies have forced the production of the product from NR latex to NBR latex, this alternative is more expensive than NR latex and the impregnation process is less efficient.
Mass processing because of the extrusion blow molding by replacing labor-intensive dip molding forming, and thermoplastic plastics without thermoset rubber curing process must be used, plus the cost of raw materials is lower, so the TPE breathing bag to significant cost savings. In addition, TPE can avoid the extraction or leaching residue caused by curing agent.
Should be used in all Medalist medical elastomer material meet the requirements of FDA, ISO 10993-5 and the REACH SVHC standard, does not contain phthalates and the composition of raw materials of animal origin, and in accord with standard of hl-tech corporation production in the factory.
FGH Systems Inc., since its inception in 1976, has been serving the blow molding industry. Except for Milacron Uniloy, Ossberger and Aoki machinery manufacturers on behalf of, the company will also provide complete sets of systems, building mold and tooling, and operates nine used in product development, sample production and sample blow molding production line. The company's address: 10 Prospect Place, Denville, NJ 07834 U.S.A. Email: sales@fghsystems.com. Website: www.fghsystems.com.
