Polyester

Background

Solar Photovoltaic Cleaning Brush, air, water, and petroleum. Developed in a 20th-century laboratory,Rocker Switch. In this reaction,Pedal Switch.Wall Switch.

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

History

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

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,App Intelligent Automatic Smart 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.Tuya Smart Switch, which are usually round,European Standard Smart Wifi Touch Switch. The number of holes in the spinneret determines the size of the yarn,Glass Touch Wifi Remote Wireless 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,UK Wifi Smart Touch Light Wall 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 Home Wifi Touch Wall 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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Alexa Google Home Smart Switches, 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,Intelligent Electronic Digital Display Temperature Switch. The rope-Wifi Smart Switch.

Drawing tow

• 1 Newly-Smart Touch Wall Light Switch.Laundry Liquid Filling Production Line.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Automatic Filling Production Line.Automatic Blanking Machine.

Cutting

• 4 Following heat setting,Spray Adhesive 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)Double-head.Vertical Powder Packing Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Plug Type Cartoning Machine.

The Future

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