Polyester

Background

Expanded PTFE joint Sealant Spool, air, water, and petroleum. Developed in a 20th-century laboratory,PTFE Thread Sealant Tapes. In this reaction,PTFE Sealant Tape.NBR Rubber O Rings.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Rubber O Rings, computer and recording tapes, and electrical insulation.Black Natural Rubber Gasket. It does not absorb moisture, but does absorb oil;Non-Asbestos Ring Flange Gaskets-, soil-, and fire-Non Asbestos Ring Gasket. Its low absorbency also makes it naturally resistant to stains.Modified PTFE Gasket,Solid Copper Gasket.Kammprofile Gasket with Integral Outer Ring, and not damaged by mildew.Corrugated Jacketed Gasket, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Corrugated Graphite Gasket-based E.I. du Pont de Nemours and Co.Corrugated Gasket. This early research, headed by W.H. Carothers,Corrugated Metal Gaskets, 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,Standard Spiral Wound Gasket. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Inner & Outer Ring Of SWG,Spiral Wound Gaskets. 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.55-inch multimedia advertising player, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.43-inch wall-mounted advertising player.

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,55-inch Vertical Double-sided Window Advertising Machine. In this process, ethylene is the polymer, the chemical building block of polyester,32-inch Wall-mounted Online Advertising Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.43-inch Wall-mounted Online Advertising Machine. The four basic forms are filament,37-inch Bar Screen, tow, and fiberfill. In the filament form,88-inch Bar Screen, producing smooth-55-inch Infrared Touch Flagship Conference All-in-one Machine.65-inch Infrared Touch Flagship Conference All-in-one Machine, filaments are cut to short,75-inch Infrared Touch Flagship Conference All-in-one Machine.100-inch Infrared Touch Flagship Conference All-in-one 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.75-inch Infrared Touch Ordinary Conference All-in-one 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-86-inch Infrared Touch Ordinary Conference All-in-one Machine,All-in-one Series, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,15-inch Open Frame Infrared Touch Monitor. 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.23.6-inch Open Frame Infrared Touch Monitor, which are usually round,12.1-inch Open Capacitive Touch Display. The number of holes in the spinneret determines the size of the yarn,10.1-inch Open Capacitive Touch Display.
• 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,7-inch Open Capacitive Touch Display. 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,17-inch Open Capacitive Touch Display.
• 18.5-inch Open Capacitive Touch Display,23.8-inch Open Capacitive Touch Display. Also,32-inch Open Capacitive Touch Display,LCD Touch Screen Series.

Winding

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

Childrens Back Plastic Table And Chairs

Kindergarten Cartoon Thick Plastic Stool, 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 Rice Washing Machine Kitchen Cooker. The rope-Plastic Rice Washing Sieve Round Drain Basket.

Drawing tow

• 1 Newly-Thick Plastic Stool Home Children Cartoon.Cute Cartoon Childrens Stool.

Crimping

• 2 Drawn tow is then fed into compression boxes,Plastic Home Fashion Creative Stool, at a rate of 9-15 crimps per inch (3-6 per cm).Plastic Household Thickened Wear-Resistant Stool.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Modern Minimalist Plastic Chair.Adult Thickened PP Plastic Stool.

Cutting

• 4 Following heat setting,Plastic Fruit And Vegetable Washing 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)Newborn Tub Can Sit And Iay Childrens Bathing Basin.Household Children Cartoon Plastic Washbasin, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Carrying Portable Tea Bucket.

The Future

Mopping Bucket Mop Dry,Mop Rotary Home Automatic Drowning's fastest-growing fiber.Mop Bar Rotation Free Hand Wash Bucket. 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,New PP Color Bucket Household Water Storage, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Resistance To Round Plastic Bucket. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Thickened Household Plastic Storage Bucket, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.