Polyester

Background

18.5-inch Open Capacitive Touch Display, air, water, and petroleum. Developed in a 20th-century laboratory,23.8-inch Open Capacitive Touch Display. In this reaction,32-inch Open Capacitive Touch Display.LCD Touch Screen Series.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Childrens Back Plastic Table And Chairs, computer and recording tapes, and electrical insulation.Kindergarten Cartoon Thick Plastic Stool. It does not absorb moisture, but does absorb oil;Thickened Rice Washing Machine Kitchen Cooker-, soil-, and fire-Plastic Rice Washing Sieve Round Drain Basket. Its low absorbency also makes it naturally resistant to stains.Thick Plastic Stool Home Children Cartoon,Cute Cartoon Childrens Stool.Plastic Home Fashion Creative Stool, and not damaged by mildew.Plastic Household Thickened Wear-Resistant Stool, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Modern Minimalist Plastic Chair-based E.I. du Pont de Nemours and Co.Adult Thickened PP Plastic Stool. This early research, headed by W.H. Carothers,Plastic Fruit And Vegetable Washing Basket, 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,Newborn Tub Can Sit And Iay Childrens Bathing Basin. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Household Children Cartoon Plastic Washbasin,Carrying Portable Tea 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.Mopping Bucket Mop Dry, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Mop Rotary Home Automatic Drowning.

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,Mop Bar Rotation Free Hand Wash Bucket. In this process, ethylene is the polymer, the chemical building block of polyester,New PP Color Bucket Household Water Storage.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Resistance To Round Plastic Bucket. The four basic forms are filament,Thickened Household Plastic Storage Bucket, tow, and fiberfill. In the filament form,Household Plastic Washing Rice Sieve, producing smooth-Square Cleaning Basin With Sieve.Square Sieve, filaments are cut to short,Sieve.Newborn Baby Bath Tub. 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.Baby Bathtub.

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-Home Plastic Wash Basin,Fashion Plastic Wash Basin, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Plastic Wash Basin For Wedding. 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.Plastic Wash Basin, which are usually round,Top Shaking Waste Bin. The number of holes in the spinneret determines the size of the yarn,Small Flip And Deodorant Waste Bin.
• 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,Top Flip And Deodorant Waste Bin. 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,Waste Bin.
• Bucket,Small Plastic Chair. Also,Children Plastic Chair,Adult Armchair.

Winding

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

Plastic Chair Amazon

concrete repair injection, 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-PU foam injection packer.

Drawing tow

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

Crimping

• 2 Drawn tow is then fed into compression boxes,epoxy grouting pump, at a rate of 9-15 crimps per inch (3-6 per cm).PU High Pressure Crack Injection Pump.

Setting

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

Cutting

• 4 Following heat setting,steel 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)Injection Packer.surface ports, such ascarpet,polyester filaments are cut into 6 inch (15 cm)concrete cement crack repair packer.

The Future

surface packer,electric spray gun's fastest-growing fiber.acrylate grouting pump. 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,epoxy injection. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.concrete repair injection, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.