Polyester

Background

Mop Bar Rotation Free Hand Wash Bucket, air, water, and petroleum. Developed in a 20th-century laboratory,New PP Color Bucket Household Water Storage. In this reaction,Resistance To Round Plastic Bucket.Thickened Household Plastic Storage Bucket.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Household Plastic Washing Rice Sieve, computer and recording tapes, and electrical insulation.Square Cleaning Basin With Sieve. It does not absorb moisture, but does absorb oil;Square Sieve-, soil-, and fire-Sieve. Its low absorbency also makes it naturally resistant to stains.Newborn Baby Bath Tub,Baby Bathtub.Home Plastic Wash Basin, and not damaged by mildew.Fashion Plastic Wash Basin, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Plastic Wash Basin For Wedding-based E.I. du Pont de Nemours and Co.Plastic Wash Basin. This early research, headed by W.H. Carothers,Top Shaking Waste Bin, 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,Small Flip And Deodorant Waste Bin. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Top Flip And Deodorant Waste Bin,Waste Bin. 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.Bucket, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Small Plastic Chair.

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,Children Plastic Chair. In this process, ethylene is the polymer, the chemical building block of polyester,Adult Armchair.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Plastic Chair Amazon. The four basic forms are filament,concrete repair injection, tow, and fiberfill. In the filament form,polyurethane foam injection packer, producing smooth-PU foam injection packer.polyurethane foam injection packer, filaments are cut to short,polyurethane injection pump.epoxy grouting pump. 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.PU High Pressure Crack Injection Pump.

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-pu injection packer,polyurethane foam injection packer, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,steel injection packer. 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.Injection Packer, which are usually round,surface ports. The number of holes in the spinneret determines the size of the yarn,concrete cement crack repair packer.
• 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,surface packer. 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,electric spray gun.
• acrylate grouting pump,surface ports. Also,epoxy injection,concrete repair injection.

Winding

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

polyurethane foam injection packer

epoxy injection packers, 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,PU foam injection packer. The rope-polyurethane foam injection packer.

Drawing tow

• 1 Newly-injection packer.aluminum injection packer.

Crimping

• 2 Drawn tow is then fed into compression boxes,SJY-10 Rescue Tripod, at a rate of 9-15 crimps per inch (3-6 per cm).Acrylate Agent High Pressure Injection Pump.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Two Components Epoxy High Pressure Crack Injection Pump.High Pressure Injection Pump.

Cutting

• 4 Following heat setting,High Pressure Steel Mechanical Injection Packer. 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)Hammer Injection Packer.High Pressure Steel Injection Packer, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Lp-5 Low Pressure Syringe Adjustable Spring.

The Future

BG-LP-1 and BG-LP-2 Plastic Surface Injection Packers,BG-710 Multifunctional Spraying Machine's fastest-growing fiber.BG-770 Multifunctional Spraying Machine. 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,BG-650 Multifunctional Spraying Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,BG-920 Multifunctional Spraying Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.BG-930 Multifunctional Spraying Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.