Polyester

Background

Self-Healing TPU Polyurethane PPF Car Wrap Film, air, water, and petroleum. Developed in a 20th-century laboratory,TPU PPF. In this reaction,Self Adhesive Marble Texture Laminated PVC Decorative Vinyl Film.Self Adhesive Wood Grain Laminated PVC Decorative Vinyl Film.

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

History

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

The Manufacturing
Process

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

Drying

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

Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

PV Array String DC Combiner Box

Solar Ip65 Waterproof 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,DC Combiner Box. The rope-Home Wifi Digital Lock.

Drawing tow

• 1 Newly-Remote Control Tuya Smart Door Lock.Waterproof Wifi App Access Control Reader Door Lock.

Crimping

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

Setting

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

Cutting

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

The Future

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