Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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-Rocker Switch,Pedal Switch, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Wall 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.Electrical Switch, which are usually round,Solar Photovoltaic DC Combiner Box. The number of holes in the spinneret determines the size of the yarn,Solar Distribution Junction Boxes.
• 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,PV Array String DC Combiner Box. 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,Solar Ip65 Waterproof DC Combiner Box.
• DC Combiner Box,Home Wifi Digital Lock. Also,Remote Control Tuya Smart Door Lock,Waterproof Wifi App Access Control Reader Door Lock.

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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Wireless Security Automatic Door Time 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,Electronic Fingerprint Digital Smart Lock Door. The rope-Wifi App Control Blue Tooth Cabinet Lock.

Drawing tow

• 1 Newly-Smart Wifi Tuya App Access.Smart Lock.

Crimping

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

Setting

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

Cutting

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

The Future

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