Polyester

Background

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

Polyester is used in the manufacture of many products, including clothing, home furnishings,17-inch Open Capacitive Touch Display, computer and recording tapes, and electrical insulation.18.5-inch Open Capacitive Touch Display. It does not absorb moisture, but does absorb oil;23.8-inch Open Capacitive Touch Display-, soil-, and fire-32-inch Open Capacitive Touch Display. Its low absorbency also makes it naturally resistant to stains.LCD Touch Screen Series,Childrens Back Plastic Table And Chairs.Kindergarten Cartoon Thick Plastic Stool, and not damaged by mildew.Thickened Rice Washing Machine Kitchen Cooker, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

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 Tub Can Sit And Iay Childrens Bathing Basin. In this process, ethylene is the polymer, the chemical building block of polyester,Household Children Cartoon Plastic Washbasin.

The Manufacturing
Process

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

Drying

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

Waste Bin

Bucket, 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,Small Plastic Chair. The rope-Children Plastic Chair.

Drawing tow

• 1 Newly-Adult Armchair.Plastic Chair Amazon.

Crimping

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

Setting

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

Cutting

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

The Future

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