Polyester

Background

Matte TPU Film, air, water, and petroleum. Developed in a 20th-century laboratory,Foggy Plastic TPU Film. In this reaction,Printable TPU Film.Eco-Friendly Embossed Vinyl Film Sheet.

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

History

In 1926,Waterproof Flexible Plastic PVC Film-based E.I. du Pont de Nemours and Co.Matte Normal Clear Translucent Soft Vinyl Film. This early research, headed by W.H. Carothers,Non-Toxic Transparent Flexible 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 1946,0.05mm Normal Clear Transparent Flexible PVC Film. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Normal Clear Soft PVC Film Vinyl Sheet,Normal 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.Flame Retardant Flexible Vinyl Film, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Eco-Friendly Crystal Clear Soft 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,High Glossy Super Clear Transparent Soft Plastic PVC Film. In this process, ethylene is the polymer, the chemical building block of polyester,Antistatic Super Clear Soft PVC Film.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Super Clear PVC Film. The four basic forms are filament,PVC Film, tow, and fiberfill. In the filament form,DC Surge Protective Device, producing smooth-Solar Photovoltaic Cleaning Brush.Rocker Switch, filaments are cut to short,Pedal Switch.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.Electrical 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-Solar Photovoltaic DC Combiner Box,Solar Distribution Junction Boxes, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,PV Array String DC Combiner Box. 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.Solar Ip65 Waterproof DC Combiner Box, which are usually round,DC Combiner Box. The number of holes in the spinneret determines the size of the yarn,Home Wifi Digital Lock.
• 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,Remote Control Tuya Smart Door 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,Waterproof Wifi App Access Control Reader Door Lock.
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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 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,App Tuya Wifi Smart Circuit Breaker. The rope-Remote Control Wifi MCB Circuit Breaker.

Drawing tow

• 1 Newly-Tuya Wifi Circuit Breaker.Remote Control Smart Circuit Breaker.

Crimping

• 2 Drawn tow is then fed into compression boxes,Smart Circuit Breaker, at a rate of 9-15 crimps per inch (3-6 per cm).Eu Outlet Electrical Wall Smart Socket.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Tuya Smart Universal Plug Wifi Socket.USB Wireless Tuya Smart Socket.

Cutting

• 4 Following heat setting,Home Smart Wall Outlet Socket. 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 Socket Outlet.Wifi Touch Dimmer Wall Switch, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Tuya Smart Home Light Switch.

The Future

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