Polyester

Background

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

Polyester is used in the manufacture of many products, including clothing, home furnishings,7-inch Open Capacitive Touch Display, computer and recording tapes, and electrical insulation.17-inch Open Capacitive Touch Display. It does not absorb moisture, but does absorb oil;18.5-inch Open Capacitive Touch Display-, soil-, and fire-23.8-inch Open Capacitive Touch Display. Its low absorbency also makes it naturally resistant to stains.32-inch Open Capacitive Touch Display,LCD Touch Screen Series.Childrens Back Plastic Table And Chairs, and not damaged by mildew.Kindergarten Cartoon Thick Plastic Stool, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

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,Plastic Fruit And Vegetable Washing Basket. In this process, ethylene is the polymer, the chemical building block of polyester,Newborn Tub Can Sit And Iay Childrens Bathing Basin.

The Manufacturing
Process

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

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-Household Plastic Washing Rice Sieve,Square Cleaning Basin With Sieve, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Square 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.Sieve, which are usually round,Newborn Baby Bath Tub. The number of holes in the spinneret determines the size of the yarn,Baby Bathtub.
• 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,Home 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,Fashion Plastic Wash Basin.
• Plastic Wash Basin For Wedding,Plastic Wash Basin. Also,Top Shaking Waste Bin,Small Flip And Deodorant Waste Bin.

Winding

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

Top Flip And Deodorant Waste Bin

Waste Bin, 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,Bucket. The rope-Small Plastic Chair.

Drawing tow

• 1 Newly-Children Plastic Chair.Adult Armchair.

Crimping

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

Setting

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

Cutting

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

The Future

pu injection packer,polyurethane foam injection packer's fastest-growing fiber.steel 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,surface ports. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.concrete cement crack repair packer, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.