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1. SCOPE This Draft Tanzania Standard specifies the specific requirements and test methods for High Density Polyethylene (HDPE)/Polypropylene (pp) (excluding cordage) woven sacks for packaging and storage of variousfruits and vegetables. 2. NORMATIVEREFERENCES The following referenced documents are indispensable for the application of this Draft Tanzania Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment) applies. 3. TERMSANDDEFINITIONS For the purpose of this Draft Tanzania Standard, the following terms and definitions shall apply: 3.1 Weave 3.2 Leno Weave is a weaving pattern in which adjacent warp tapes are twisted around consecutive weft tapes to form a spiral pair, effectively locking each weft in place. 3.3 Leno Bags/leno sacks bags/ Sacks made from Leno weave fabric. 3.4 Ends yarns running along the length of and parallel to the sacking selvedge. 3.5 Picks y 4. CONSTRUCTION OF PP LENO BAGS PP Leno bags are constructed using plain weave in which two warp yarns are twisted around the weft yarns to provide a strong yet sheer fabric. The standard warp yarn is paired with a skeleton or 'doup' yarn; these twisted warp yarns grip tightly to the weft which causes the durability of the fabric. Leno weave produces an open fabric with almost no yarn slippage or misplacement of threads. The paired form (fabric or a fabric item) by interlacing long threads passing in one direction with others at a right angle to them. 7PDF Image | High Density Polyethylene HDPE Textiles
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