Polyester

Background

Super Clear Transparent PET Film Sheet, air, water, and petroleum. Developed in a 20th-century laboratory,Transparent PET Film. In this reaction,Matte TPU Film.Foggy Plastic TPU Film.

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

History

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

The Manufacturing
Process

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

Drying

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

Electronic Fingerprint Digital Smart Lock Door

Wifi App Control Blue Tooth Cabinet 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,Smart Wifi Tuya App Access. The rope-Smart Lock.

Drawing tow

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

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Smart Circuit Breaker.Eu Outlet Electrical Wall Smart Socket.

Cutting

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

The Future

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