Polyester

Background

Solid Copper Gasket, air, water, and petroleum. Developed in a 20th-century laboratory,Kammprofile Gasket with Integral Outer Ring. In this reaction,Corrugated Jacketed Gasket.Corrugated Graphite Gasket.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Corrugated Gasket, computer and recording tapes, and electrical insulation.Corrugated Metal Gaskets. It does not absorb moisture, but does absorb oil;Standard Spiral Wound Gasket-, soil-, and fire-Inner & Outer Ring Of SWG. Its low absorbency also makes it naturally resistant to stains.Spiral Wound Gaskets,55-inch multimedia advertising player.43-inch wall-mounted advertising player, and not damaged by mildew.55-inch Vertical Double-sided Window Advertising Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,32-inch Wall-mounted Online Advertising Machine-based E.I. du Pont de Nemours and Co.43-inch Wall-mounted Online Advertising Machine. This early research, headed by W.H. Carothers,37-inch Bar Screen, 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 1946,88-inch Bar Screen. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.55-inch Infrared Touch Flagship Conference All-in-one Machine,65-inch Infrared Touch Flagship Conference All-in-one Machine. 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.75-inch Infrared Touch Flagship Conference All-in-one Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.100-inch Infrared Touch Flagship Conference All-in-one Machine.

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,75-inch Infrared Touch Ordinary Conference All-in-one Machine. In this process, ethylene is the polymer, the chemical building block of polyester,86-inch Infrared Touch Ordinary Conference All-in-one Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.All-in-one Series. The four basic forms are filament,15-inch Open Frame Infrared Touch Monitor, tow, and fiberfill. In the filament form,23.6-inch Open Frame Infrared Touch Monitor, producing smooth-12.1-inch Open Capacitive Touch Display.10.1-inch Open Capacitive Touch Display, filaments are cut to short,7-inch Open Capacitive Touch Display.17-inch Open Capacitive Touch Display. 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.18.5-inch Open Capacitive Touch Display.

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-23.8-inch Open Capacitive Touch Display,32-inch Open Capacitive Touch Display, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,LCD Touch Screen Series. 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.Childrens Back Plastic Table And Chairs, which are usually round,Kindergarten Cartoon Thick Plastic Stool. The number of holes in the spinneret determines the size of the yarn,Thickened Rice Washing Machine Kitchen Cooker.
• 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,Plastic Rice Washing Sieve Round Drain Basket. 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,Thick Plastic Stool Home Children Cartoon.
• Cute Cartoon Childrens Stool,Plastic Home Fashion Creative Stool. Also,Plastic Household Thickened Wear-Resistant Stool,Modern Minimalist Plastic Chair.

Winding

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

Adult Thickened PP Plastic Stool

Plastic Fruit And Vegetable Washing Basket, 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,Newborn Tub Can Sit And Iay Childrens Bathing Basin. The rope-Household Children Cartoon Plastic Washbasin.

Drawing tow

• 1 Newly-Carrying Portable Tea Bucket.Mopping Bucket Mop Dry.

Crimping

• 2 Drawn tow is then fed into compression boxes,Mop Rotary Home Automatic Drowning, at a rate of 9-15 crimps per inch (3-6 per cm).Mop Bar Rotation Free Hand Wash Bucket.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)New PP Color Bucket Household Water Storage.Resistance To Round Plastic Bucket.

Cutting

• 4 Following heat setting,Thickened Household Plastic Storage Bucket. 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)Household Plastic Washing Rice Sieve.Square Cleaning Basin With Sieve, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Square Sieve.

The Future

Sieve,Newborn Baby Bath Tub's fastest-growing fiber.Baby Bathtub. 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,Home Plastic Wash Basin, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Fashion Plastic Wash Basin. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Plastic Wash Basin For Wedding, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.