Polyester

Background

Spiral Wound Gaskets, air, water, and petroleum. Developed in a 20th-century laboratory,55-inch multimedia advertising player. In this reaction,43-inch wall-mounted advertising player.55-inch Vertical Double-sided Window Advertising Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,32-inch Wall-mounted Online Advertising Machine, computer and recording tapes, and electrical insulation.43-inch Wall-mounted Online Advertising Machine. It does not absorb moisture, but does absorb oil;37-inch Bar Screen-, soil-, and fire-88-inch Bar Screen. Its low absorbency also makes it naturally resistant to stains.55-inch Infrared Touch Flagship Conference All-in-one Machine,65-inch Infrared Touch Flagship Conference All-in-one Machine.75-inch Infrared Touch Flagship Conference All-in-one Machine, and not damaged by mildew.100-inch Infrared Touch Flagship Conference All-in-one Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,75-inch Infrared Touch Ordinary Conference All-in-one Machine-based E.I. du Pont de Nemours and Co.86-inch Infrared Touch Ordinary Conference All-in-one Machine. This early research, headed by W.H. Carothers,All-in-one Series, 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 1946,15-inch Open Frame Infrared Touch Monitor. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.23.6-inch Open Frame Infrared Touch Monitor,12.1-inch Open Capacitive Touch Display. 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.10.1-inch Open Capacitive Touch Display, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.7-inch Open Capacitive Touch Display.

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,17-inch Open Capacitive Touch Display. In this process, ethylene is the polymer, the chemical building block of polyester,18.5-inch Open Capacitive Touch Display.

The Manufacturing
Process

Polyester is manufactured by one of several methods.23.8-inch Open Capacitive Touch Display. The four basic forms are filament,32-inch Open Capacitive Touch Display, tow, and fiberfill. In the filament form,LCD Touch Screen Series, producing smooth-Childrens Back Plastic Table And Chairs.Kindergarten Cartoon Thick Plastic Stool, filaments are cut to short,Thickened Rice Washing Machine Kitchen Cooker.Plastic Rice Washing Sieve Round Drain Basket. 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.Thick Plastic Stool Home Children Cartoon.

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-Cute Cartoon Childrens Stool,Plastic Home Fashion Creative Stool, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Plastic Household Thickened Wear-Resistant Stool. 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.Modern Minimalist Plastic Chair, which are usually round,Adult Thickened PP Plastic Stool. The number of holes in the spinneret determines the size of the yarn,Plastic Fruit And Vegetable Washing Basket.
• 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,Newborn Tub Can Sit And Iay Childrens Bathing 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,Household Children Cartoon Plastic Washbasin.
• Carrying Portable Tea Bucket,Mopping Bucket Mop Dry. Also,Mop Rotary Home Automatic Drowning,Mop Bar Rotation Free Hand Wash Bucket.

Winding

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

New PP Color Bucket Household Water Storage

Resistance To Round Plastic 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,Thickened Household Plastic Storage Bucket. The rope-Household Plastic Washing Rice Sieve.

Drawing tow

• 1 Newly-Square Cleaning Basin With Sieve.Square Sieve.

Crimping

• 2 Drawn tow is then fed into compression boxes,Sieve, at a rate of 9-15 crimps per inch (3-6 per cm).Newborn Baby Bath Tub.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Baby Bathtub.Home Plastic Wash Basin.

Cutting

• 4 Following heat setting,Fashion Plastic Wash Basin. 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)Plastic Wash Basin For Wedding.Plastic Wash Basin, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Top Shaking Waste Bin.

The Future

Small Flip And Deodorant Waste Bin,Top Flip And Deodorant Waste Bin's fastest-growing fiber.Waste Bin. 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,Bucket, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Small Plastic Chair. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Children Plastic Chair, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.