Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Drawing tow

• 1 Newly-Laundry Liquid Filling Production Line.Liquor Production Line.

Crimping

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

Setting

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

Cutting

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

The Future

3-10L Bottle Water Filling Machine,3-10L Bottle Water Filling Machine's fastest-growing fiber.Quantitative 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,Time Setting Filling Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Semi-automatic Filling Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Horizontal Type Liquid Filling Machin, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.