Polyester

Background

Plastic Rice Washing Sieve Round Drain Basket, air, water, and petroleum. Developed in a 20th-century laboratory,Thick Plastic Stool Home Children Cartoon. In this reaction,Cute Cartoon Childrens Stool.Plastic Home Fashion Creative Stool.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Plastic Household Thickened Wear-Resistant Stool, computer and recording tapes, and electrical insulation.Modern Minimalist Plastic Chair. It does not absorb moisture, but does absorb oil;Adult Thickened PP Plastic Stool-, soil-, and fire-Plastic Fruit And Vegetable Washing Basket. Its low absorbency also makes it naturally resistant to stains.Newborn Tub Can Sit And Iay Childrens Bathing Basin,Household Children Cartoon Plastic Washbasin.Carrying Portable Tea Bucket, and not damaged by mildew.Mopping Bucket Mop Dry, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Mop Rotary Home Automatic Drowning-based E.I. du Pont de Nemours and Co.Mop Bar Rotation Free Hand Wash Bucket. This early research, headed by W.H. Carothers,New PP Color Bucket Household Water Storage, 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,Resistance To Round Plastic Bucket. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Thickened Household Plastic Storage Bucket,Household Plastic Washing Rice Sieve. 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.Square Cleaning Basin With Sieve, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Square Sieve.

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,Sieve. In this process, ethylene is the polymer, the chemical building block of polyester,Newborn Baby Bath Tub.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Baby Bathtub. The four basic forms are filament,Home Plastic Wash Basin, tow, and fiberfill. In the filament form,Fashion Plastic Wash Basin, producing smooth-Plastic Wash Basin For Wedding.Plastic Wash Basin, filaments are cut to short,Top Shaking Waste Bin.Small Flip And Deodorant Waste Bin. 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.Top Flip And Deodorant Waste Bin.

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-Waste Bin,Bucket, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Small Plastic Chair. 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.Children Plastic Chair, which are usually round,Adult Armchair. The number of holes in the spinneret determines the size of the yarn,Plastic Chair Amazon.
• 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,concrete repair injection. 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,polyurethane foam injection packer.
• PU foam injection packer,polyurethane foam injection packer. Also,polyurethane injection pump,epoxy grouting pump.

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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pu injection packer, 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,polyurethane foam injection packer. The rope-steel injection packer.

Drawing tow

• 1 Newly-Injection Packer.surface ports.

Crimping

• 2 Drawn tow is then fed into compression boxes,concrete cement crack repair packer, at a rate of 9-15 crimps per inch (3-6 per cm).surface packer.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)electric spray gun.acrylate grouting pump.

Cutting

• 4 Following heat setting,surface ports. 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)epoxy injection.concrete repair injection, such ascarpet,polyester filaments are cut into 6 inch (15 cm)polyurethane foam injection packer.

The Future

epoxy injection packers,PU foam injection packer's fastest-growing fiber.polyurethane foam injection packer. 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,injection packer, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,aluminum injection packer. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.SJY-10 Rescue Tripod, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.