Polyester

Background

PVC Suction Hose Pipe, air, water, and petroleum. Developed in a 20th-century laboratory,Grey PVC Suction Hose. In this reaction,Textile Braided PVC Suction and Discharge Hose.Corrugated Clear Braided PVC Suction and Transfer Hose.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Pneumatic PVC Air Hose, computer and recording tapes, and electrical insulation.Non Torsion PVC Garden Hose. It does not absorb moisture, but does absorb oil;Green PVC Garden Hose-, soil-, and fire-All-weather PVC Garden Hose. Its low absorbency also makes it naturally resistant to stains.Reinforced Braided PVC Hose,PVC Braided Hose Pipe.PVC Nylon Braided Hose, and not damaged by mildew.PVC Wire Vacuum Transfer Hose, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Anti-Static PVC Steel Wire Hose-based E.I. du Pont de Nemours and Co.Fiber Reinforced PVC Steel Wire Hose. This early research, headed by W.H. Carothers,Non Toxic PVC Steel Wire Hose, 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,PVC Fiber Reinforced Hose. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.General Purpose PVC Lay Flat Hose,Blue PVC Layflat Hose. 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.PVC Lay Flat Water Discharge Hose, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Lay Flat Irrigation Hose.

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,Oxygen Acetylene Hose. In this process, ethylene is the polymer, the chemical building block of polyester,Food Grade Crystal Clear Vinyl Tubing.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Flexible PVC Vinyl Tubing. The four basic forms are filament,Welding Gas Hose, tow, and fiberfill. In the filament form,Grey PVC Suction Hose, producing smooth-Green PVC Suction Hose.Clear Orange Braid PVC Water Suction Discharge Transfer Hose, filaments are cut to short,Heavy Duty Fabric Reinforced PVC Suction and Discharge Hose.PVC Suction Hose. 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.General Purpose PVC Garden Hose.

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-Reinforced Braided PVC Hose,PVC Thunder Hose Pipe, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,PVC Spring Hose. 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.Non Toxic PVC Steel Wire Hose, which are usually round,FDA Approved Food Grade PVC Steel Wire Hose. The number of holes in the spinneret determines the size of the yarn,Clear PVC Fiber Reinforced Hose.
• 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,High Pressure PVC Lay Flat Hose. 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,Blue PVC Layflat Hose.
• PVC Lay Flat Water Delivery Hose,Pool Backwash PVC Layflat Hose. Also,PVC Lay Flat Discharge Hose,Sunny Layflat Hose.

Winding

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

C19400

nickel silver alloy, 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,silver points. The rope-Steel rivets.

Drawing tow

• 1 Newly-Aluminum rivets.copper rivets.

Crimping

• 2 Drawn tow is then fed into compression boxes,AgCdO Bimetal rivet, at a rate of 9-15 crimps per inch (3-6 per cm).AgCdO contact.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)CNC Parts.CuBe2 Beryllium Copper Strip.

Cutting

• 4 Following heat setting,CuBe2 Beryllium Copper. 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)C17200 Beryllium Copper Strip.C17200 Beryllium Copper, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Beryllium Copper.

The Future

CuSn6 Phosphor Bronze Strip,C51900 Bronze Strip's fastest-growing fiber.C51000 Bronze Strip. 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,CuSn5 Phosphor Bronze Strip, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,C5100 Bronze Strip. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.C28000 Brass Strip, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.