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Order and Packaging Information Nafion® PFSA membranes are available in two thickness values: NR-211 (1-mil) and NR-212 (2-mil). Standard product dimensions for membrane rolls include: Width: 305-mm and 610-mm standard roll widths, and intermediate widths from 200-mm (min.) up to 610-mm (max.) on special order. Intermediate widths available in increments of 3.175-mm. Length: 100-meter standard roll length, and intermediate lengths of 10-meter and 50-meter on special order. There is a 100-m2 minimum order requirement for non-standard roll widths; and a per roll packaging surcharge for standard widths in non-standard lengths less than 100-meters. A roll core leader is available at a nominal charge per roll. Please contact Nafion® customer service for details and availability. Rolls are splice-free when ordered in standard 100-meter lengths. Non-standard roll lengths may contain splices under the following conditions: a 5-meter minimum distance between splices and a maximum of 3 splices per roll that is less than 100-meters in length. The water content and conditioning of the membrane will affect its dimensions, and the change may not be symmetrical in the length, width, and thickness directions. Once the cover sheet is removed, the membrane will respond to the environmental conditions of the workplace. If the membrane remains on the backing film, the membrane's response to relative humidity conditions, for example, may cause the combination of membrane/backing film to curl. In addition, certain manufacturing steps performed by the customer also may affect the membrane's dimensions and flatness. If specified in the purchase order, a roll core leader is attached to the membrane as shown in Figure 2. The roll core leader material is the same as the backing film, and the length specified in the purchase order. Figure 2: Splice Design Start of Membrane on Roll Backing Film Membrane Cover Sheet Peel-Back and Remove Cover Sheet in the Splice Area Overlap Splice Between Membrane and Roll Core Leader Double-Stick Tape Roll Core Leader Splice Design for Attaching Roll Core Leader to MembranePDF Image | DuPont Nafion PFSA NR-211 and NR-212 membranes
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