Polyester

Background

Self Adhesive Wood Grain Laminated PVC Decorative Vinyl Film, air, water, and petroleum. Developed in a 20th-century laboratory,Disposable Quarantine Clothing CPE Film. In this reaction,Embossed CPE Film.CPE Film.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.0.05mm Normal Clear Transparent Flexible PVC Film. The four basic forms are filament,Normal Clear Soft PVC Film Vinyl Sheet, tow, and fiberfill. In the filament form,Normal Clear PVC Film, producing smooth-Flame Retardant Flexible Vinyl Film.Eco-Friendly Crystal Clear Soft PVC Film, filaments are cut to short,High Glossy Super Clear Transparent Soft Plastic PVC Film.Antistatic Super Clear Soft 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.Super Clear PVC Film.

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-PVC Film,DC Surge Protective Device, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Solar Photovoltaic Cleaning Brush. 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.Rocker Switch, which are usually round,Pedal Switch. The number of holes in the spinneret determines the size of the yarn,Wall Switch.
• 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,Electrical Switch. 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 Photovoltaic DC Combiner Box.
• Solar Distribution Junction Boxes,PV Array String DC Combiner Box. Also,Solar Ip65 Waterproof DC Combiner Box,DC Combiner Box.

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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Remote Control Tuya Smart Door 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,Waterproof Wifi App Access Control Reader Door Lock. The rope-Home Electronic Electric Tuya App Wifi Smart Lock.

Drawing tow

• 1 Newly-Wireless Security Automatic Door Time Lock.Electronic Fingerprint Digital Smart Lock Door.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Remote Control Wifi MCB 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)Tuya Wifi Circuit Breaker.Remote Control Smart Circuit Breaker, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Smart Circuit Breaker.

The Future

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