Polyester

Background

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

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

History

In 1926,Fluorescent Color Translucent Soft PVC Film-based E.I. du Pont de Nemours and Co.Lamination Color Transparent Soft Vinyl Film. This early research, headed by W.H. Carothers,Lamination Plastic Soft PVC Sheet, 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,Waterproof Flexible Plastic PVC Film. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Matte Normal Clear Translucent Soft Vinyl Film,Non-Toxic Transparent Flexible 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.0.05mm Normal Clear 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.Normal Clear Soft PVC Film Vinyl Sheet.

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 PVC Film. In this process, ethylene is the polymer, the chemical building block of polyester,Flame Retardant Flexible Vinyl Film.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Eco-Friendly Crystal Clear Soft PVC Film. The four basic forms are filament,High Glossy Super Clear Transparent Soft Plastic PVC Film, tow, and fiberfill. In the filament form,Antistatic Super Clear Soft PVC Film, producing smooth-Super Clear PVC Film.PVC Film, filaments are cut to short,DC Surge Protective Device.Solar Photovoltaic Cleaning Brush. 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.Rocker 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-Pedal Switch,Wall Switch, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Electrical 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.Solar Photovoltaic DC Combiner Box, which are usually round,Solar Distribution Junction Boxes. The number of holes in the spinneret determines the size of the yarn,PV Array String 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 Ip65 Waterproof 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,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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Electronic Fingerprint Digital Smart Lock Door, 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,Wifi App Control Blue Tooth Cabinet Lock. The rope-Smart Wifi Tuya App Access.

Drawing tow

• 1 Newly-Smart Lock.App Tuya Wifi Smart Circuit Breaker.

Crimping

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

Setting

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

Cutting

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

The Future

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