Polyester

Background

Embossed CPE Film, air, water, and petroleum. Developed in a 20th-century laboratory,CPE Film. In this reaction,Anti-Fog PET Film Sheet for Protective Mask Face Shield.Super Clear Transparent PET Film Sheet.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Transparent PET Film, computer and recording tapes, and electrical insulation.Matte TPU Film. It does not absorb moisture, but does absorb oil;Foggy Plastic TPU Film-, soil-, and fire-Printable TPU Film. Its low absorbency also makes it naturally resistant to stains.Eco-Friendly Embossed Vinyl Film Sheet,Embossed Matte Soft PVC Film.Embossed Color Flexible PVC Film, and not damaged by mildew.Anti-Yellow Embossed Soft Vinyl Film, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Embossed PVC Film-based E.I. du Pont de Nemours and Co.Color Transparent Soft Vinyl Film Roll. This early research, headed by W.H. Carothers,Fluorescent Color Translucent 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,Lamination Color Transparent Soft Vinyl Film. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Lamination Plastic Soft PVC Sheet,Waterproof Flexible Plastic 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.Matte Normal Clear Translucent Soft Vinyl Film, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Non-Toxic Transparent Flexible PVC Film.

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,0.05mm Normal Clear Transparent Flexible PVC Film. In this process, ethylene is the polymer, the chemical building block of polyester,Normal Clear Soft PVC Film Vinyl Sheet.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Normal Clear PVC Film. The four basic forms are filament,Flame Retardant Flexible Vinyl Film, tow, and fiberfill. In the filament form,Eco-Friendly Crystal Clear Soft PVC Film, producing smooth-High Glossy Super Clear Transparent Soft Plastic PVC Film.Antistatic Super Clear Soft PVC Film, filaments are cut to short,Super Clear PVC Film.PVC Film. 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 Surge Protective Device.

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-Solar Photovoltaic Cleaning Brush,Rocker Switch, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Pedal 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.Wall Switch, which are usually round,Electrical Switch. The number of holes in the spinneret determines the size of the yarn,Solar Photovoltaic DC Combiner Box.
• 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,Solar Distribution Junction Boxes. 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,PV Array String DC Combiner Box.
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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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Home Electronic Electric Tuya App Wifi Smart Lock, 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,Wireless Security Automatic Door Time Lock. The rope-Electronic Fingerprint Digital Smart Lock Door.

Drawing tow

• 1 Newly-Wifi App Control Blue Tooth Cabinet Lock.Smart Wifi Tuya App Access.

Crimping

• 2 Drawn tow is then fed into compression boxes,Smart Lock, at a rate of 9-15 crimps per inch (3-6 per cm).App Tuya Wifi Smart Circuit Breaker.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Remote Control Wifi MCB Circuit Breaker.Tuya Wifi Circuit Breaker.

Cutting

• 4 Following heat setting,Remote Control Smart Circuit Breaker. 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)Smart Circuit Breaker.Eu Outlet Electrical Wall Smart Socket, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Tuya Smart Universal Plug Wifi Socket.

The Future

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