Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

DC Combiner Box

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

Drawing tow

• 1 Newly-Home Electronic Electric Tuya App Wifi Smart Lock.Wireless Security Automatic Door Time Lock.

Crimping

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

Setting

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

Cutting

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

The Future

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