b'Stitching and Finishing Terminology Header - A solid strip of material that runs along one or more sides of a flag or banner which houses the grommets, rope and thimbles or other finishing. A header is used to both reinforce the finishing and to avoid interfering with the graphics. Traditionally the header is on the F L A G F I N I S H I N G Back Tacking - This stitch is achieved by sewing forward, then backward,left side of the flag but can be on any side depending how the flag and then forward again at the beginning and end of a line of stitching.will be displayed. White headers are standard but colored or custom Back tacking prevents seams from unraveling and ensures professionalheaders are available upon request on most products but may change quality. the price of your project. Please consult a sales representative for pricing information.Lock stitching - Lockstitch is the most common stitch performed by both household and industrial single needle and 2 needle sewingThere are a few header materials.When flags are going to be flown machines. The stitch is formed from by two threads; one is fed through aoutdoors, a strong header is required to ensure long term durability. The needle on top of the fabric and the second comes from a bobbin (smallstrong and durable canvas absorbs the force of the flag pulling away spool of thread) underneath the fabric. The needle pushes the top threadfrom the pole. Canvas headers are standard on all flags, except ePoly. through the fabric where the rotating bobbin loops the top threadCanvas headers are almost always white. Colored canvas headers are around the bottom thread creating the lock stitch. available but only for large quantities and may affect the price. For more information please contact a sales representative. Double Stitching - The hem of a flag is sewn using a two needle sewing machine creating two parallel lines of stitching. The two lines create aHeaders made from economy polyester are standard on all economy stronger hem to avoid fraying when a flag is flown outdoors. polyester flags as these flags are not intended for outdoor or long term use. Economy polyester headers are usually white but can colored or be Zigzag stitching - This is a variation on a lock stitch but instead of aprinted with a design bleed upon request.straight line the stitch is sewn back and forth at an angle to create a zigzag. The zigzag stitch is often added to the fly end of large flags in order to add reinforcement to the hem and the stitching.Double folded ends - The fly end of a flag is highly susceptible to fraying and other damage due to the high amount of drag the flag is exposed to when flown outdoors. In order to create a reinforced hem on the fly end, 350 the ends are often folded over twice before sewing. Double folded endsHEADERare standard on most outdoor flags to ensure the flag has a long life.'