Polyester

Background

Thick Plastic Stool Home Children Cartoon, air, water, and petroleum. Developed in a 20th-century laboratory,Cute Cartoon Childrens Stool. In this reaction,Plastic Home Fashion Creative Stool.Plastic Household Thickened Wear-Resistant Stool.

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

History

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

The Manufacturing
Process

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

Drying

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

Drawing tow

• 1 Newly-surface ports.concrete cement crack repair packer.

Crimping

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

Setting

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

Cutting

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

The Future

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