Polyester

Background

Kindergarten Cartoon Thick Plastic Stool, air, water, and petroleum. Developed in a 20th-century laboratory,Thickened Rice Washing Machine Kitchen Cooker. In this reaction,Plastic Rice Washing Sieve Round Drain Basket.Thick Plastic Stool Home Children Cartoon.

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

History

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

The Manufacturing
Process

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

Drying

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

Winding

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

polyurethane injection pump

epoxy grouting pump, 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,PU High Pressure Crack Injection Pump. The rope-pu injection packer.

Drawing tow

• 1 Newly-polyurethane foam injection packer.steel injection packer.

Crimping

• 2 Drawn tow is then fed into compression boxes,Injection Packer, at a rate of 9-15 crimps per inch (3-6 per cm).surface ports.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)concrete cement crack repair packer.surface packer.

Cutting

• 4 Following heat setting,electric spray gun. 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)acrylate grouting pump.surface ports, such ascarpet,polyester filaments are cut into 6 inch (15 cm)epoxy injection.

The Future

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