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  1. Metal zippers may turn black and possibly stain fabric because of oxidisation of the copper alloy elements in the metal teeth. It is essential to thoroughly rinse and dry the garment and zipper.

  2. There are many chemical and industrial washes in use and some of these may cause metal teeth to change colour. Some metal zippers have chemically treated teeth which may be affected by the various washes. It is recommended that thorough testing takes place to ensure a particular zipper can endure the wash without undesirable effect on the colour of the metal teeth.

  3. Ironing. Direct contact with the zipper teeth and iron should be avoided. It is recommended that the zipper be covered with fabric when ironing. Always close the zipper before ironing.

  4. Cleaning. The use of strong alkaline detergents or chloride bleaching agents is not recommended as discolouration may occur. Mild detergents should be used.

  5. Choosing the Right Zipper.

  1. Aluminium Zippers. Aluminium is a light, soft metal and is recommended for use in pockets and other similar areas or as "fashion detail" where there is little or no strength required.

  2. Choosing the Correct Zipper for Your Fabric.

    It is recommended that when ordering zippers to consider the weight of the fabric in a garment and also the shape of a garment.

    If the garment is fitted it will place additional lateral stress on the zipper and so it is advisable to use a larger, stronger gauge zipper such as a No.4 or No.5 zip.

    Similarly, the weight of a fabric should determine whether a heavier (or lighter) gauge zip is required.

    In the case of Invisible Zips it is recommended that C.26, Mesh/Lace Invisible Zip be used only in lightweight fabrics and heavy fabrics will require a C.56 Invisible Zip; a No.5 gauge zip. The C.36, a No.3 gauge Invisible Zip is ideal for most garments requiring an Invisible Zip.