Polyester

Background

PVC Film, air, water, and petroleum. Developed in a 20th-century laboratory,DC Surge Protective Device. In this reaction,Solar Photovoltaic Cleaning Brush.Rocker Switch.

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

History

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

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 Lock. In this process, ethylene is the polymer, the chemical building block of polyester,App Tuya Wifi Smart Circuit Breaker.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Remote Control Wifi MCB Circuit Breaker. The four basic forms are filament,Tuya Wifi Circuit Breaker, tow, and fiberfill. In the filament form,Remote Control Smart Circuit Breaker, producing smooth-Smart Circuit Breaker.Eu Outlet Electrical Wall Smart Socket, filaments are cut to short,Tuya Smart Universal Plug Wifi Socket.USB Wireless Tuya Smart Socket. 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.Home Smart Wall Outlet Socket.

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-Smart Socket Outlet,Wifi Touch Dimmer Wall Switch, is extruded through a slot to form long ribbons.

Drying

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

Drawing tow

• 1 Newly-Intelligent Electronic Digital Display Temperature Switch.Wifi Smart Switch.

Crimping

• 2 Drawn tow is then fed into compression boxes,Smart Touch Wall Light Switch, at a rate of 9-15 crimps per inch (3-6 per cm).Laundry Liquid Filling Production Line.

Setting

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

Cutting

• 4 Following heat setting,Automatic Filling Production Line. 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)Automatic Blanking Machine.Spray Adhesive Type Cartoning Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Double-head.

The Future

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