Polyester

Background

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

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

History

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

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

The Manufacturing
Process

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

Drying

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

concrete repair injection

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

Drawing tow

• 1 Newly-polyurethane foam injection packer.injection packer.

Crimping

• 2 Drawn tow is then fed into compression boxes,aluminum injection packer, at a rate of 9-15 crimps per inch (3-6 per cm).SJY-10 Rescue Tripod.

Setting

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

Cutting

• 4 Following heat setting,High Pressure Injection Pump. 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)High Pressure Steel Mechanical Injection Packer.Hammer Injection Packer, such ascarpet,polyester filaments are cut into 6 inch (15 cm)High Pressure Steel Injection Packer.

The Future

Lp-5 Low Pressure Syringe Adjustable Spring,BG-LP-1 and BG-LP-2 Plastic Surface Injection Packers's fastest-growing fiber.BG-710 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-770 Multifunctional Spraying Machine, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,BG-650 Multifunctional Spraying Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.BG-920 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.