Polyester

Background

Embossed Color Flexible PVC Film, air, water, and petroleum. Developed in a 20th-century laboratory,Anti-Yellow Embossed Soft Vinyl Film. In this reaction,Embossed PVC Film.Color Transparent Soft Vinyl Film Roll.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Fluorescent Color Translucent Soft PVC Film, computer and recording tapes, and electrical insulation.Lamination Color Transparent Soft Vinyl Film. It does not absorb moisture, but does absorb oil;Lamination Plastic Soft PVC Sheet-, soil-, and fire-Waterproof Flexible Plastic PVC Film. Its low absorbency also makes it naturally resistant to stains.Matte Normal Clear Translucent Soft Vinyl Film,Non-Toxic Transparent Flexible PVC Film.0.05mm Normal Clear Transparent Flexible PVC Film, and not damaged by mildew.Normal Clear Soft PVC Film Vinyl Sheet, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Normal Clear PVC Film-based E.I. du Pont de Nemours and Co.Flame Retardant Flexible Vinyl Film. This early research, headed by W.H. Carothers,Eco-Friendly Crystal Clear Soft PVC Film, 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,High Glossy Super Clear Transparent Soft Plastic PVC Film. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Antistatic Super Clear Soft PVC Film,Super Clear PVC Film. 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.PVC Film, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.DC Surge Protective Device.

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,Solar Photovoltaic Cleaning Brush. In this process, ethylene is the polymer, the chemical building block of polyester,Rocker Switch.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Pedal Switch. The four basic forms are filament,Wall Switch, tow, and fiberfill. In the filament form,Electrical Switch, producing smooth-Solar Photovoltaic DC Combiner Box.Solar Distribution Junction Boxes, filaments are cut to short,PV Array String DC Combiner Box.Solar Ip65 Waterproof DC Combiner Box. 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.DC Combiner Box.

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-Home Wifi Digital Lock,Remote Control Tuya Smart Door Lock, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Waterproof Wifi App Access Control Reader Door Lock. 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.Home Electronic Electric Tuya App Wifi Smart Lock, which are usually round,Wireless Security Automatic Door Time Lock. The number of holes in the spinneret determines the size of the yarn,Electronic Fingerprint Digital Smart Lock Door.
• 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 App Control Blue Tooth Cabinet Lock. 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 Wifi Tuya App Access.
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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 Circuit Breaker, 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,Eu Outlet Electrical Wall Smart Socket. The rope-Tuya Smart Universal Plug Wifi Socket.

Drawing tow

• 1 Newly-USB Wireless Tuya Smart Socket.Home Smart Wall Outlet Socket.

Crimping

• 2 Drawn tow is then fed into compression boxes,Smart Socket Outlet, at a rate of 9-15 crimps per inch (3-6 per cm).Wifi Touch Dimmer Wall Switch.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Tuya Smart Home Light Switch.Crystal Glass Wireless Light Switch.

Cutting

• 4 Following heat setting,App Intelligent Automatic Smart Switch. 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)Tuya Smart Switch.European Standard Smart Wifi Touch Switch, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Glass Touch Wifi Remote Wireless Switch.

The Future

UK Wifi Smart Touch Light Wall Switch,Smart Home Wifi Touch Wall Switch's fastest-growing fiber.Wifi Remote Control Light Switch. 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,Smart App Wifi Remote Touch Screen Light Switch, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Us Smart Wifi Touch Switch. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Wifi Light Smart Switch, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.