Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Solar Ip65 Waterproof DC Combiner Box

DC Combiner Box, 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,Home Wifi Digital Lock. The rope-Remote Control Tuya Smart Door Lock.

Drawing tow

• 1 Newly-Waterproof Wifi App Access Control Reader Door Lock.Home Electronic Electric Tuya App Wifi Smart Lock.

Crimping

• 2 Drawn tow is then fed into compression boxes,Wireless Security Automatic Door Time Lock, at a rate of 9-15 crimps per inch (3-6 per cm).Electronic Fingerprint Digital Smart Lock Door.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Wifi App Control Blue Tooth Cabinet Lock.Smart Wifi Tuya App Access.

Cutting

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

The Future

Remote Control Smart Circuit Breaker,Smart Circuit Breaker's fastest-growing fiber.Eu Outlet Electrical Wall 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,Tuya Smart Universal Plug Wifi Socket, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,USB Wireless Tuya Smart Socket. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Home Smart Wall Outlet Socket, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.