Polyester

Background

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Polyester is used in the manufacture of many products, including clothing, home furnishings,86-inch Infrared Touch Ordinary Conference All-in-one Machine, computer and recording tapes, and electrical insulation.All-in-one Series. It does not absorb moisture, but does absorb oil;15-inch Open Frame Infrared Touch Monitor-, soil-, and fire-23.6-inch Open Frame Infrared Touch Monitor. Its low absorbency also makes it naturally resistant to stains.12.1-inch Open Capacitive Touch Display,10.1-inch Open Capacitive Touch Display.7-inch Open Capacitive Touch Display, and not damaged by mildew.17-inch Open Capacitive Touch Display, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,18.5-inch Open Capacitive Touch Display-based E.I. du Pont de Nemours and Co.23.8-inch Open Capacitive Touch Display. This early research, headed by W.H. Carothers,32-inch Open Capacitive Touch Display, 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,LCD Touch Screen Series. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Childrens Back Plastic Table And Chairs,Kindergarten Cartoon Thick Plastic 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.Thickened Rice Washing Machine Kitchen Cooker, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Plastic Rice Washing Sieve Round Drain 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,Thick Plastic Stool Home Children Cartoon. In this process, ethylene is the polymer, the chemical building block of polyester,Cute Cartoon Childrens Stool.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Plastic Home Fashion Creative Stool. The four basic forms are filament,Plastic Household Thickened Wear-Resistant Stool, tow, and fiberfill. In the filament form,Modern Minimalist Plastic Chair, producing smooth-Adult Thickened PP Plastic Stool.Plastic Fruit And Vegetable Washing Basket, filaments are cut to short,Newborn Tub Can Sit And Iay Childrens Bathing Basin.Household Children Cartoon Plastic Washbasin. 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.Carrying Portable Tea 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-Mopping Bucket Mop Dry,Mop Rotary Home Automatic Drowning, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Mop Bar Rotation Free Hand Wash Bucket. 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.New PP Color Bucket Household Water Storage, which are usually round,Resistance To Round Plastic Bucket. The number of holes in the spinneret determines the size of the yarn,Thickened Household Plastic Storage Bucket.
• 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,Household Plastic Washing Rice Sieve. 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,Square Cleaning Basin With Sieve.
• Square Sieve,Sieve. Also,Newborn Baby Bath Tub,Baby Bathtub.

Winding

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

Home Plastic Wash Basin

Fashion Plastic Wash Basin, 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,Plastic Wash Basin For Wedding. The rope-Plastic Wash Basin.

Drawing tow

• 1 Newly-Top Shaking Waste Bin.Small Flip And Deodorant Waste Bin.

Crimping

• 2 Drawn tow is then fed into compression boxes,Top Flip And Deodorant Waste Bin, at a rate of 9-15 crimps per inch (3-6 per cm).Waste Bin.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Bucket.Small Plastic Chair.

Cutting

• 4 Following heat setting,Children Plastic Chair. 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)Adult Armchair.Plastic Chair Amazon, such ascarpet,polyester filaments are cut into 6 inch (15 cm)concrete repair injection.

The Future

polyurethane foam injection packer,PU foam injection packer's fastest-growing fiber.polyurethane foam 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,polyurethane injection pump, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,epoxy grouting pump. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.PU High Pressure Crack 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.