Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Smart Lock

App Tuya Wifi 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,Remote Control Wifi MCB Circuit Breaker. The rope-Tuya Wifi Circuit Breaker.

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

App Intelligent Automatic Smart Switch,Tuya Smart Switch's fastest-growing fiber.European Standard Smart Wifi Touch 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,Glass Touch Wifi Remote Wireless Switch, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,UK Wifi Smart Touch Light Wall Switch. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Smart Home Wifi Touch 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.