Polyimide (PI) is a high temperature polymer that can be aromatic, semi-aromatic, or linear according to the composition of the chains. Aromatic molecular structure is the most used PI because of their thermostability. Depending on the type of molecular bonding within the chains, PI can be thermoplastic (TPI) or thermosetting (PI-s). TPIs become soft (melts) when they get heated as the bonding within the chains’ elements cannot be broken but the chains can slip easily. In contrast, PI-s become hard/cure as the chains have ability to break down and make bonding with other adjacent chains in 3D space, knows as cross-linking. The main differences of PI-s and TPI are as follows:

• PI-s has HIGHER thermal resistance than TPI
• PI-s has HIGHER tensile and compression strength than TPI
• PI-s has HIGHER dimensional stability than TPI (due to lower water absorption and thermal expansion)
• PI-s has LOWER impact resistance, and elongation than TPI
• PI-s is difficult to process, while TPI can be processed using conventional injection, compression molding, and extrusion process

The properties of PI-s and TPI in comparison to other high-performance polymers are shown in below figure.

BIEGLO is the distributor of Saint-Gobain's Meldin ® PI-s. Under the Meldin ® 7000 brand BIEGLO offers solid bars, plates and finished parts made of PI-s. These semi-finished parts are produced using hot compression moulding, or direct forming processes. The range of Saint Gobain includes also PI with different additives, such as PTFE or graphite.

BIEGLO can offer Saint-Gobain's Meldin® PI-s in the following shapes:

• PI-s Rods
• PI-s Sheets
• PI-s Tubes

PLAVIS is the Polyimide material offered by Daelim Co., Ltd as the most Super Engineering Plastic available in the market. PLAVIS has a unique chemical structure with some of the highest thermal, physical, electrical and other resistance properties. Daelim Co., Ltd produces PLAVIS raw materials into molded parts, plate/sheet and rod types.

• BIEGLO is the distributor for PLAVIS 'S' sheets.

To complete the PI-s range, BIEGLO also offers semi-finished products of other producers including

• PI-s Fibres
• PI-s Filaments
• PI-s Films

Do not hesitate to contact us for unusual projects and applications. We are pleased to consult you.

BIEGLO can provide the customers with on-demand precise final PI parts (such as high temperature sealings, insulation tubes, etc.) produced by Omniseal Solutions® advanced direct forming process or CNC-machining of Meldin ® semi-finished parts. Furthermore TPI can be melt-processed and BIEGLO can offer injection-molded parts too.

We can offer extremely high precision machining with a tolerance of +/- 1µ. Our machined parts are available in small, medium or high volumes. Small series of only a few parts are possible, but also high-volume series of many 1000 parts per month. We offer highest surface quality and fully automated machining process.