Developed in close partnership with Huntsman's customers, IROGRAN® A 85 P 4394 HR TPU has greater tensile strength than the standard IROGRAN® A 85 P 4394 elastomer grade originally developed in 2004. The new grade also offers improved film extrusion quality and high melt strength, which makes it ideal for blown film applications. Delivering better resistance to force in its melted state, which makes it less likely that an extruded film will break during production, IROGRAN® A 85 P 4394 HR TPU can help to significantly lower scrap rates, improve manufacturing throughput and cut waste in blown film processing.
IROGRAN® A 85 P 4394 HR TPU is developed to solve the problems of customers in diverse markets including:
* TPU lay flat hoses used in high pressure industrial and municipal applications e.g., firefighting
* Textile lamination - as a breathable, waterproof layer for rugged performance apparel.
In the manufacture of TPU lay flat hoses, IROGRAN® A 85 P 4394 HR TPU is applied via the "extrusion through-the-weave" process. In this application, the product's greater tensile strength is highly advantageous - helping the resulting hoses cycle between periods of being tightly coiled and then extended and put under high water pressure levels. In the case of fire hoses, this pressure can typically be in the region of 8 and 20 bar (800 and 2000 kPa; 116 and 290 psi).
When it comes to textile lamination, IROGRAN® A 85 P 4394 HR TPU is an excellent material for creating a waterproof, breathable film in rugged performance apparel (including gloves and footwear). Blown to create an extremely thin layer, which is then added to fabrics, IROGRAN® A 85 P 4394 HR TPU provides the protective properties needed to create high performance outdoor garments. Adhering well to different kinds of fabrics, IROGRAN® A 85 P 4394 HR TPU can aid the stretch and recovery of the materials it is used on. The nature of the grade also means the resulting films can be engineered to have different surface finishes, including gloss, smooth and matte effects
The basis of the chemistry of IROGRAN® A 85 P 4394 HR TPU goes back to 2004 when the flagship product was first developed. Later variations of the product were developed to create the family of elastomer products from Huntsman that customers have learned to know and love.
Other IROGRAN® A 85 P 4394 TPU products available from Huntsman include:
* IROGRAN® A 85 P 4394 - a legacy product, launched in 2004, that was first introduced for thin wall technical parts, thin wall extrusion profiles, spiral hoses, cable jacketing and film and sheet
* IROGRAN® A 85 P 4394 FCM - launched in 2015, this grade has a similar base chemistry to the standard version of IROGRAN® A 85 P 4394 but is formulated with raw materials that are compliant with FDA regulations for food processing belts and has an NSF 61 rating (approved for potable water applications).
* IROGRAN® A 85 P 4394 UV - also launched in 2015, this product is fortified with proprietary additives that enable it to withstand UV exposure while maintaining excellent physical properties and appearance. This product is used for pneumatic tubing for airlines and industrial equipment and fracking hoses.
IROGRAN® A 85 P 4394 HR TPU is made at the Huntsman Polyurethanes manufacturing facility in
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