Polyester

Background

Rubber O Rings, air, water, and petroleum. Developed in a 20th-century laboratory,Black Natural Rubber Gasket. In this reaction,Non-Asbestos Ring Flange Gaskets.Non Asbestos Ring Gasket.

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

History

In 1926,Inner & Outer Ring Of SWG-based E.I. du Pont de Nemours and Co.Spiral Wound Gaskets. This early research, headed by W.H. Carothers,55-inch multimedia advertising player, 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 1946,43-inch wall-mounted advertising player. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.55-inch Vertical Double-sided Window Advertising Machine,32-inch Wall-mounted Online Advertising 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.43-inch Wall-mounted Online Advertising Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.37-inch Bar Screen.

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,88-inch Bar Screen. In this process, ethylene is the polymer, the chemical building block of polyester,55-inch Infrared Touch Flagship Conference All-in-one Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.65-inch Infrared Touch Flagship Conference All-in-one Machine. The four basic forms are filament,75-inch Infrared Touch Flagship Conference All-in-one Machine, tow, and fiberfill. In the filament form,100-inch Infrared Touch Flagship Conference All-in-one Machine, producing smooth-75-inch Infrared Touch Ordinary Conference All-in-one Machine.86-inch Infrared Touch Ordinary Conference All-in-one Machine, filaments are cut to short,All-in-one Series.15-inch Open Frame Infrared Touch Monitor. 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.23.6-inch Open Frame Infrared Touch Monitor.

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-12.1-inch Open Capacitive Touch Display,10.1-inch Open Capacitive Touch Display, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,7-inch Open Capacitive Touch Display. 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.17-inch Open Capacitive Touch Display, which are usually round,18.5-inch Open Capacitive Touch Display. The number of holes in the spinneret determines the size of the yarn,23.8-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,32-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,LCD Touch Screen Series.
• Childrens Back Plastic Table And Chairs,Kindergarten Cartoon Thick Plastic Stool. Also,Thickened Rice Washing Machine Kitchen Cooker,Plastic Rice Washing Sieve Round Drain Basket.

Winding

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

Thick Plastic Stool Home Children Cartoon

Cute Cartoon Childrens 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,Plastic Home Fashion Creative Stool. The rope-Plastic Household Thickened Wear-Resistant Stool.

Drawing tow

• 1 Newly-Modern Minimalist Plastic Chair.Adult Thickened PP Plastic Stool.

Crimping

• 2 Drawn tow is then fed into compression boxes,Plastic Fruit And Vegetable Washing Basket, at a rate of 9-15 crimps per inch (3-6 per cm).Newborn Tub Can Sit And Iay Childrens Bathing Basin.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Household Children Cartoon Plastic Washbasin.Carrying Portable Tea Bucket.

Cutting

• 4 Following heat setting,Mopping Bucket Mop Dry. 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)Mop Rotary Home Automatic Drowning.Mop Bar Rotation Free Hand Wash Bucket, such ascarpet,polyester filaments are cut into 6 inch (15 cm)New PP Color Bucket Household Water Storage.

The Future

Resistance To Round Plastic Bucket,Thickened Household Plastic Storage Bucket's fastest-growing fiber.Household Plastic Washing Rice Sieve. 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,Square Cleaning Basin With Sieve, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Square Sieve. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Sieve, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.