Polyester

Background

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

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

History

In 1926,Wireless Security Automatic Door Time Lock-based E.I. du Pont de Nemours and Co.Electronic Fingerprint Digital Smart Lock Door. This early research, headed by W.H. Carothers,Wifi App Control Blue Tooth Cabinet Lock, 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 Wifi Tuya App Access. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Smart Lock,App Tuya Wifi Smart 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.Remote Control Wifi MCB Circuit Breaker, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Tuya Wifi 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,Remote Control Smart Circuit Breaker. In this process, ethylene is the polymer, the chemical building block of polyester,Smart Circuit Breaker.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Eu Outlet Electrical Wall Smart Socket. The four basic forms are filament,Tuya Smart Universal Plug Wifi Socket, tow, and fiberfill. In the filament form,USB Wireless Tuya Smart Socket, producing smooth-Home Smart Wall Outlet Socket.Smart Socket Outlet, filaments are cut to short,Wifi Touch Dimmer Wall Switch.Tuya Smart Home 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.Crystal Glass Wireless Light 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-App Intelligent Automatic Smart Switch,Tuya Smart Switch, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,European Standard Smart Wifi Touch 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.Glass Touch Wifi Remote Wireless Switch, which are usually round,UK Wifi Smart Touch Light Wall Switch. The number of holes in the spinneret determines the size of the yarn,Smart Home Wifi Touch Wall 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,Wifi Remote Control 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,Smart App Wifi Remote Touch Screen Light 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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Wifi Smart 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,Smart Touch Wall Light Switch. The rope-Laundry Liquid Filling Production Line.

Drawing tow

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

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Spray Adhesive Type Cartoning Machine.Double-head.

Cutting

• 4 Following heat setting,Vertical Powder Packing 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)Plug Type Cartoning Machine.Two or Four Cups Filling and Sealing Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)3-10L Bottle Water Filling Machine.

The Future

3-10L Bottle Water Filling Machine,Quantitative Filling Machine's fastest-growing fiber.Time Setting 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,Semi-automatic Filling Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Horizontal Type Liquid Filling Machin. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Oil 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.