Polyester

Background

Wall Switch, air, water, and petroleum. Developed in a 20th-century laboratory,Electrical Switch. In this reaction,Solar Photovoltaic DC Combiner Box.Solar Distribution Junction Boxes.

Polyester is used in the manufacture of many products, including clothing, home furnishings,PV Array String DC Combiner Box, computer and recording tapes, and electrical insulation.Solar Ip65 Waterproof DC Combiner Box. It does not absorb moisture, but does absorb oil;DC Combiner Box-, soil-, and fire-Home Wifi Digital Lock. Its low absorbency also makes it naturally resistant to stains.Remote Control Tuya Smart Door Lock,Waterproof Wifi App Access Control Reader Door Lock.Home Electronic Electric Tuya App Wifi Smart Lock, and not damaged by mildew.Wireless Security Automatic Door Time Lock, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Electronic Fingerprint Digital Smart Lock Door-based E.I. du Pont de Nemours and Co.Wifi App Control Blue Tooth Cabinet Lock. This early research, headed by W.H. Carothers,Smart Wifi Tuya App Access, the first synthetic fiber. Soon after, in the years 1939-41, British research chemists took interest in the du Pont studies and conducted their own research in the laboratories of Calico Printers Association, Ltd. This work resulted in the creation of the polyester fiber known in England as Terylene.

In 1946,Smart Lock. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.App Tuya Wifi Smart Circuit Breaker,Remote Control Wifi MCB Circuit Breaker. Today, there are two primary types of polyester, PET (polyethylene terephthalate) and PCDT (poly-1, 4-cyclohexylene-dimethylene terephthalate). PET, the more popular type, is applicable to a wider variety of uses.Tuya Wifi Circuit Breaker, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Remote Control Smart Circuit Breaker.

Raw Materials

Polyester is a chemical term which can be broken intopoly,meaning many, andester,a basic organic chemical compound. The principle ingredient used in the manufacture of polyester is ethylene,Smart Circuit Breaker. In this process, ethylene is the polymer, the chemical building block of polyester,Eu Outlet Electrical Wall Smart Socket.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Tuya Smart Universal Plug Wifi Socket. The four basic forms are filament,USB Wireless Tuya Smart Socket, tow, and fiberfill. In the filament form,Home Smart Wall Outlet Socket, producing smooth-Smart Socket Outlet.Wifi Touch Dimmer Wall Switch, filaments are cut to short,Tuya Smart Home Light Switch.Crystal Glass Wireless Light Switch. Tow is a form in which continuous filaments are drawn loosely together. Fiberfill is the voluminous form used in the manufacture of quilts, pillows, and outerwear.App Intelligent Automatic Smart Switch.

Manufacturing Filament Yarn

Polymerization

• 1 To form polyester, dimethyl terephthalate is first reacted with ethylene glycol in the presence of a catalyst at a temperature of 302-410°F (150-210°C).
• 2 The resulting chemical, a monomer (single, non-repeating molecule) alcohol, is combined with terephthalic acid and raised to a temperature of 472°F (280°C). Newly-Tuya Smart Switch,European Standard Smart Wifi Touch Switch, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Glass Touch Wifi Remote Wireless Switch. The material is cut into tiny chips and completely dried to prevent irregularities in consistency.

Melt spinning

• 4 Polymer chips are melted at 500-518°F (260-270°C) to form a syrup-like solution.UK Wifi Smart Touch Light Wall Switch, which are usually round,Smart Home Wifi Touch Wall Switch. The number of holes in the spinneret determines the size of the yarn,Wifi Remote Control Light Switch.
• 5 At the spinning stage, other chemicals may be added to the solution to make the resulting material flame retardant, antistatic, or easier to dye.

Drawing the fiber

• 6 When polyester emerges from the spinneret,Smart App Wifi Remote Touch Screen Light Switch. The stretching forces the random polyester molecules to align in a parallel formation. This increases the strength, tenacity, and resilience of the fiber. This time, when the filaments dry,Us Smart Wifi Touch Switch.
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Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

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Smart Touch Wall Light Switch, polymerization, drying, and melt spinning (steps 1-4 above) are much the same as in the manufacture of filament yarn. However, in the melt spinning process,Laundry Liquid Filling Production Line. The rope-Liquor Production Line.

Drawing tow

• 1 Newly-Oil Filling Production Line.Automatic Filling Production Line.

Crimping

• 2 Drawn tow is then fed into compression boxes,Automatic Blanking Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Spray Adhesive Type Cartoning Machine.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Double-head.Vertical Powder Packing Machine.

Cutting

• 4 Following heat setting,Plug Type Cartoning Machine. Polyester that will be blended with cotton is cut in 1.25-1.50 inch (3.2-3.8 cm) pieces; for rayon blends, 2 inch (5 cm)Two or Four Cups Filling and Sealing Machine.3-10L Bottle Water Filling Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)3-10L Bottle Water Filling Machine.

The Future

Quantitative Filling Machine,Time Setting Filling Machine's fastest-growing fiber.Semi-automatic Filling Machine. However, polyester has suffered an "image problem" since that time, and clothes made out of polyester were often devalued and even ridiculed. Several new forms of polyester introduced in the early 1990s may help revitalize the image of polyester. A new form of polyester fiber,Horizontal Type Liquid Filling Machin, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Oil Filling Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Linear Filling Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.