Polyester

Background

Asbestos Gasket Sheet, air, water, and petroleum. Developed in a 20th-century laboratory,flange Isolation gasket kits. In this reaction,Insulating Flange Kits.Flange Insulation Kit Distributor.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Flange Insulation Gasket Kit, computer and recording tapes, and electrical insulation.Corrugated Graphite Tapes. It does not absorb moisture, but does absorb oil;Expanded PTFE Joint Sealant Roll Tape-, soil-, and fire-Expanded PTFE joint Sealant Spool. Its low absorbency also makes it naturally resistant to stains.PTFE Thread Sealant Tapes,PTFE Sealant Tape.NBR Rubber O Rings, and not damaged by mildew.Rubber O Rings, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Black Natural Rubber Gasket-based E.I. du Pont de Nemours and Co.Non-Asbestos Ring Flange Gaskets. This early research, headed by W.H. Carothers,Non Asbestos Ring Gasket, 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,Modified PTFE Gasket. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Solid Copper Gasket,Kammprofile Gasket with Integral Outer Ring. 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.Corrugated Jacketed Gasket, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Corrugated Graphite Gasket.

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,Corrugated Gasket. In this process, ethylene is the polymer, the chemical building block of polyester,Corrugated Metal Gaskets.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Standard Spiral Wound Gasket. The four basic forms are filament,Inner & Outer Ring Of SWG, tow, and fiberfill. In the filament form,Spiral Wound Gaskets, producing smooth-55-inch multimedia advertising player.43-inch wall-mounted advertising player, filaments are cut to short,55-inch Vertical Double-sided Window Advertising Machine.32-inch Wall-mounted Online Advertising Machine. 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.43-inch Wall-mounted Online Advertising Machine.

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-37-inch Bar Screen,88-inch Bar Screen, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,55-inch Infrared Touch Flagship Conference All-in-one Machine. 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.65-inch Infrared Touch Flagship Conference All-in-one Machine, which are usually round,75-inch Infrared Touch Flagship Conference All-in-one Machine. The number of holes in the spinneret determines the size of the yarn,100-inch Infrared Touch Flagship Conference All-in-one Machine.
• 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,75-inch Infrared Touch Ordinary Conference All-in-one Machine. 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,86-inch Infrared Touch Ordinary Conference All-in-one Machine.
• All-in-one Series,15-inch Open Frame Infrared Touch Monitor. Also,23.6-inch Open Frame Infrared Touch Monitor,12.1-inch Open Capacitive Touch Display.

Winding

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

10.1-inch Open Capacitive Touch Display

7-inch Open Capacitive Touch Display, 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,17-inch Open Capacitive Touch Display. The rope-18.5-inch Open Capacitive Touch Display.

Drawing tow

• 1 Newly-23.8-inch Open Capacitive Touch Display.32-inch Open Capacitive Touch Display.

Crimping

• 2 Drawn tow is then fed into compression boxes,LCD Touch Screen Series, at a rate of 9-15 crimps per inch (3-6 per cm).Childrens Back Plastic Table And Chairs.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Kindergarten Cartoon Thick Plastic Stool.Thickened Rice Washing Machine Kitchen Cooker.

Cutting

• 4 Following heat setting,Plastic Rice Washing Sieve Round Drain Basket. 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)Thick Plastic Stool Home Children Cartoon.Cute Cartoon Childrens Stool, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Plastic Home Fashion Creative Stool.

The Future

Plastic Household Thickened Wear-Resistant Stool,Modern Minimalist Plastic Chair's fastest-growing fiber.Adult Thickened PP Plastic Stool. 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,Plastic Fruit And Vegetable Washing Basket, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Newborn Tub Can Sit And Iay Childrens Bathing Basin. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Household Children Cartoon Plastic Washbasin, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.