Polyester

Background

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

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

History

In 1926,55-inch Vertical Double-sided Window Advertising Machine-based E.I. du Pont de Nemours and Co.32-inch Wall-mounted Online Advertising Machine. This early research, headed by W.H. Carothers,43-inch Wall-mounted Online Advertising Machine, 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 1946,37-inch Bar Screen. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.88-inch Bar Screen,55-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.65-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.75-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,100-inch Infrared Touch Flagship Conference All-in-one Machine. In this process, ethylene is the polymer, the chemical building block of polyester,75-inch Infrared Touch Ordinary Conference All-in-one Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.86-inch Infrared Touch Ordinary Conference All-in-one Machine. The four basic forms are filament,All-in-one Series, tow, and fiberfill. In the filament form,15-inch Open Frame Infrared Touch Monitor, producing smooth-23.6-inch Open Frame Infrared Touch Monitor.12.1-inch Open Capacitive Touch Display, filaments are cut to short,10.1-inch Open Capacitive Touch Display.7-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.17-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-18.5-inch Open Capacitive Touch Display,23.8-inch Open Capacitive Touch Display, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,32-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.LCD Touch Screen Series, which are usually round,Childrens Back Plastic Table And Chairs. The number of holes in the spinneret determines the size of the yarn,Kindergarten Cartoon Thick Plastic Stool.
• 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,Thickened Rice Washing Machine Kitchen Cooker. 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,Plastic Rice Washing Sieve Round Drain Basket.
• Thick Plastic Stool Home Children Cartoon,Cute Cartoon Childrens Stool. Also,Plastic Home Fashion Creative Stool,Plastic Household Thickened Wear-Resistant Stool.

Winding

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

Modern Minimalist Plastic Chair

Adult Thickened PP 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,Plastic Fruit And Vegetable Washing Basket. The rope-Newborn Tub Can Sit And Iay Childrens Bathing Basin.

Drawing tow

• 1 Newly-Household Children Cartoon Plastic Washbasin.Carrying Portable Tea Bucket.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Mop Bar Rotation Free Hand Wash Bucket.New PP Color Bucket Household Water Storage.

Cutting

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

The Future

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