The principle behind manufacturing a thread is always the same: spinning pumps press the polymer melt through micro-fine spinnerets under extremely high pressure. The filaments created are then bundled into threads, drawn over godets and wound using a winder.
How is Poy made?
POY is a yarn produced from polyester fibers spun with molten spinning and derived from long filament fibers or continuous filament. The filament fibers used have low strength with a very high percentage of elongation POY threads are semi-finished threads made of melted chips PET and then through a spinning process.
What is POY yarn?
yield what is known as partially oriented yarns (POY)—i.e., filaments that are partially drawn and partially crystallized and that can be drawn at a later time during textile operations. Many fibres, such as PET, require that a hot-drawing step follow the spinning process fairly soon, or they will become brittle.…
What is difference between POY and FDY?
Generally, POY can be pulled longer, while FDY can be pulled less. Because POY is a pre-oriented yarn and is not fully stretched, the remaining elongation should be more than 50%; while FDY is a fully-oriented yarn, the remaining elongation is generally more than 40%, which is relatively stable.
Which process is used to manufacture FDY?
Introduction. Fully Drawn Yarn (FDY) is produced by a process similiar to Partially Oriented Yarn manufacturing except that the yarn is produced at higher spinning speeds coupled with intermediate drawing integrated in the process itself. This allows stabilisation through orientation and crystallization.
What is Poi made of?
Poi, starchy Polynesian food paste made from the taro root. In Samoa and other Pacific islands, poi is a thick paste of pounded bananas or pineapples mixed with coconut cream; the word originally denoted the action of pounding the food to a pulp.
How is polyester yarn made?
It is formed by ethylene glycol and more terephthalic acid, transforming it into polymer or poltericoletane. Thanks to the union of these two compounds, called polymerization, the polyester filament or fiber is obtained. Once this polymer is obtained, the yarns can be created with other natural or synthetic compounds.
How many types of yarns are there?
Yarn can be made from a number of natural or synthetic fibers. Many types of yarn are made differently though. There are two main types of yarn: spun and filament.
What is Hoy yarn?
HOY (High Oriented Yarn) is an ultra-high speed spinning filament produced by one-step spinning and stretching method with performance is between FDY and POY.
What does FDY mean?
|FDY||Fully Drawn Yarn (textiles; aka FOY, Fully Oriented Yarn)|
|FDY||Findlay, Ohio (Airport Code)|
What is Poy used for?
POY is mainly used in texturizing to make textured yarn, also known as Polyester Drawn Textured Yarn (DTY). POY can also be used in draw warping for weaving and warp knitting of fabrics.
What is FDY and DTY?
DTY is suitable for fabric end uses like outer/inner garments, skin-clinging garments, furnishings, upholstery, etc. This is a replacement of cotton and cotton blend yarns with very low moisture content. Fully Drawn Yarn (FDY) Polyester FDY is the abbreviation for Polyester Fully Drawn Yarn.
What is SD yarn?
Polyester FDY is the abbreviation for Polyester Fully Drawn Yarn. It is also know as Polyester Filament Yarn (PFY) or Spin Draw Yarn (SDY). FDY is mainly used as weft or weaves in making fabrics. FDY can be knitted or woven with any other filament yarn to get fabric of various different varieties.
What is the catalyst used in the manufacturing of FDY?
Polyester is produced by CP (continuous polymerization) process using PTA (purified Terepthalic Acid) and MEG (Mono Ethylene Glycol). The old process is called Batch process using DMT (Dimethyl Terephthalate) and MEG. Catalysts like Sb2O3 (Antimony Trioxide) are used to start and control the reaction.
What is filament spinning?
1. Melt Spinning. Melt spinning is one of the most convenient and economic method of manufacturing polymeric/synthetic fibres. … These polymeric chips are melted and then pumped at specific rate through a spinneret. The extruded filaments are cooled to solidify continuous filaments.