Injection-molding of custom-made articles in Techno-polymers and liquid silicone. 3D-printed items (www.duepistampi.com). Grey room production quality;
From the design and manufacture of the mold, to the molding of the finished products and their assembly. has years of experience Techno-polymers and Liquid Silicone (LSR), thanks to the competence of its team and the most advanced technologies, m
achines and equipment. The company has four main production divisions. Molds and tooling production : DUEPI S.r.l. has a full-line production in house. Starting from the dedicated drawing of the finished part given by the customer, or from an application sketch or even more generically from an idea, we can design the mold and build it for the customers. Our workshop is equipped with burrs, lathes and both wired and sinking EDMs, all of which are CNC and CAM programmed. A Mold Flow station, equipped with dedicated software, simulates multi-cavity injection. This permit to predict the behavior of the materials during the molding process. Molds can be sold as they are or eventually used in Duepi for the production of the finished products in Thermoplastic materials or Liquid Silicone, which are the main production activity of the company. Thermoplastic injection-molded products : The molding of the finished product is carried out with presses from 35 to 500 tons. Our machines are equipped with robots for the removal and storage of the molded articles which are 100% tailor-made on customer’s specification and drawings. We have over 30 years of experience producing molded plastic polymers and we are able to manufacture a wide range of products for a variety of industrial sectors: from early childhood, to electrical and medical applications going through many others industrial fields. Liquid silicone (LSR) customized articles : we do injection mold the finished items in a so called «grey room». We decided to go for this class of air-cleaning production room because of the type or products we manufacture and the type of industry we serve. We keep a very high-quality standards thanks to safety cleanliness protection for the employee in this department and to side-polluting machines (for example LSR mixers, blowers and ovens) which are kept outside molding room. On top of this we comply to ISO 8573.1 2001 norm for the regulation of air pollution and dust particulate even considering water and oil residuals. All this to provide the best high-purity and crystal clean (on demand) LSR products to drawing. Advantages of the LSR material in comparison to standard silicone:
- Unlimited colors combination
- Low compression set compared with TPEs
- Hi-quality Medical grades
- No toxic combustion products
- Excellent environmental compatibility
- Free from plasticizers
- Very good heat stability up to 180 °C: no melting or creeping
- Low-temperature flexibility: down to -50 °C
- Chemical resistance
- Aging resistance
3D-Printed products : This new division of Duepi is divided in two separated production units where we are able to create realistic multicolored prototypes, thereby reducing costs and waste. The first unit uses an HP Multi Jet Fusion 4200 printer which allows to create prototypes even in small/medium series. It guarantees a high reusability of the raw materials as well as a reduction in production times compared to any other 3D printing technology. The second unit uses a Stratasys J750 3D printer which offers unparalleled aesthetic performance and leverage thanks to its polychromatic capability with texture mapping and color shading. It can create prototypes with the appearance, consistency and operational characteristics of finished products. ADVANTAGES OF 3D PRINTERS
• Small production batches;
• Zero costs for molds and tooling;
• Molds for LSR prototypes in combination with the LSR department;
• Prototypes with realistic textures in 500.000 colors;
• Variety of consistencies (rigid, flexible, transparent, opaque);
• Product modifications rendered without the need for intervention on the mold;
• Waste and costs reduced with certified biocompatible HP PA12 Nylon.
