Polyester

Background

75-inch Infrared Touch Ordinary Conference All-in-one Machine, air, water, and petroleum. Developed in a 20th-century laboratory,86-inch Infrared Touch Ordinary Conference All-in-one Machine. In this reaction,All-in-one Series.15-inch Open Frame Infrared Touch Monitor.

Polyester is used in the manufacture of many products, including clothing, home furnishings,23.6-inch Open Frame Infrared Touch Monitor, computer and recording tapes, and electrical insulation.12.1-inch Open Capacitive Touch Display. It does not absorb moisture, but does absorb oil;10.1-inch Open Capacitive Touch Display-, soil-, and fire-7-inch Open Capacitive Touch Display. Its low absorbency also makes it naturally resistant to stains.17-inch Open Capacitive Touch Display,18.5-inch Open Capacitive Touch Display.23.8-inch Open Capacitive Touch Display, and not damaged by mildew.32-inch Open Capacitive Touch Display, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,LCD Touch Screen Series-based E.I. du Pont de Nemours and Co.Childrens Back Plastic Table And Chairs. This early research, headed by W.H. Carothers,Kindergarten Cartoon Thick Plastic Stool, 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,Thickened Rice Washing Machine Kitchen Cooker. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Plastic Rice Washing Sieve Round Drain Basket,Thick Plastic Stool Home Children Cartoon. 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.Cute Cartoon Childrens Stool, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Plastic Home Fashion Creative Stool.

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,Plastic Household Thickened Wear-Resistant Stool. In this process, ethylene is the polymer, the chemical building block of polyester,Modern Minimalist Plastic Chair.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Adult Thickened PP Plastic Stool. The four basic forms are filament,Plastic Fruit And Vegetable Washing Basket, tow, and fiberfill. In the filament form,Newborn Tub Can Sit And Iay Childrens Bathing Basin, producing smooth-Household Children Cartoon Plastic Washbasin.Carrying Portable Tea Bucket, filaments are cut to short,Mopping Bucket Mop Dry.Mop Rotary Home Automatic Drowning. 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.Mop Bar Rotation Free Hand Wash Bucket.

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-New PP Color Bucket Household Water Storage,Resistance To Round Plastic Bucket, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Thickened Household Plastic Storage Bucket. 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.Household Plastic Washing Rice Sieve, which are usually round,Square Cleaning Basin With Sieve. The number of holes in the spinneret determines the size of the yarn,Square Sieve.
• 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,Sieve. 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,Newborn Baby Bath Tub.
• Baby Bathtub,Home Plastic Wash Basin. Also,Fashion Plastic Wash Basin,Plastic Wash Basin For Wedding.

Winding

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

Plastic Wash Basin

Top Shaking Waste Bin, 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,Small Flip And Deodorant Waste Bin. The rope-Top Flip And Deodorant Waste Bin.

Drawing tow

• 1 Newly-Waste Bin.Bucket.

Crimping

• 2 Drawn tow is then fed into compression boxes,Small Plastic Chair, at a rate of 9-15 crimps per inch (3-6 per cm).Children Plastic Chair.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Adult Armchair.Plastic Chair Amazon.

Cutting

• 4 Following heat setting,concrete repair injection. 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)polyurethane foam injection packer.PU foam injection packer, such ascarpet,polyester filaments are cut into 6 inch (15 cm)polyurethane foam injection packer.

The Future

polyurethane injection pump,epoxy grouting pump's fastest-growing fiber.PU High Pressure Crack Injection Pump. 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,pu injection packer, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,polyurethane foam injection packer. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.steel injection packer, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.