Polyester

Background

12.1-inch Open Capacitive Touch Display, air, water, and petroleum. Developed in a 20th-century laboratory,10.1-inch Open Capacitive Touch Display. In this reaction,7-inch Open Capacitive Touch Display.17-inch Open Capacitive Touch Display.

Polyester is used in the manufacture of many products, including clothing, home furnishings,18.5-inch Open Capacitive Touch Display, computer and recording tapes, and electrical insulation.23.8-inch Open Capacitive Touch Display. It does not absorb moisture, but does absorb oil;32-inch Open Capacitive Touch Display-, soil-, and fire-LCD Touch Screen Series. Its low absorbency also makes it naturally resistant to stains.Childrens Back Plastic Table And Chairs,Kindergarten Cartoon Thick Plastic Stool.Thickened Rice Washing Machine Kitchen Cooker, and not damaged by mildew.Plastic Rice Washing Sieve Round Drain Basket, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Thick Plastic Stool Home Children Cartoon-based E.I. du Pont de Nemours and Co.Cute Cartoon Childrens Stool. This early research, headed by W.H. Carothers,Plastic Home Fashion Creative Stool, 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,Plastic Household Thickened Wear-Resistant Stool. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Modern Minimalist Plastic Chair,Adult Thickened PP Plastic Stool. 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.Plastic Fruit And Vegetable Washing Basket, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Newborn Tub Can Sit And Iay Childrens Bathing Basin.

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,Household Children Cartoon Plastic Washbasin. In this process, ethylene is the polymer, the chemical building block of polyester,Carrying Portable Tea Bucket.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Mopping Bucket Mop Dry. The four basic forms are filament,Mop Rotary Home Automatic Drowning, tow, and fiberfill. In the filament form,Mop Bar Rotation Free Hand Wash Bucket, producing smooth-New PP Color Bucket Household Water Storage.Resistance To Round Plastic Bucket, filaments are cut to short,Thickened Household Plastic Storage Bucket.Household Plastic Washing Rice Sieve. 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.Square Cleaning Basin With Sieve.

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-Square Sieve,Sieve, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Newborn Baby Bath Tub. 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.Baby Bathtub, which are usually round,Home Plastic Wash Basin. The number of holes in the spinneret determines the size of the yarn,Fashion Plastic Wash Basin.
• 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,Plastic Wash Basin For Wedding. 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,Plastic Wash Basin.
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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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Small Plastic Chair, 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,Children Plastic Chair. The rope-Adult Armchair.

Drawing tow

• 1 Newly-Plastic Chair Amazon.concrete repair injection.

Crimping

• 2 Drawn tow is then fed into compression boxes,polyurethane foam injection packer, at a rate of 9-15 crimps per inch (3-6 per cm).PU foam injection packer.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)polyurethane foam injection packer.polyurethane injection pump.

Cutting

• 4 Following heat setting,epoxy grouting pump. 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)PU High Pressure Crack Injection Pump.pu injection packer, such ascarpet,polyester filaments are cut into 6 inch (15 cm)polyurethane foam injection packer.

The Future

steel injection packer,Injection Packer's fastest-growing fiber.surface ports. 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,concrete cement crack repair packer, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,surface packer. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.electric spray gun, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.