Polyester

Background

PVC Lay Flat Hose, air, water, and petroleum. Developed in a 20th-century laboratory,Industrial PVC Steel Wire Suction Hose. In this reaction,Gas Hose.Oxygen and Acetylene Torch Welding Hose.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Oxygen Acetylene Hose, computer and recording tapes, and electrical insulation.Vinyl Tubing. It does not absorb moisture, but does absorb oil;Welding Gas Hose-, soil-, and fire-PVC Suction Hose Pipe. Its low absorbency also makes it naturally resistant to stains.Grey PVC Suction Hose,Textile Braided PVC Suction and Discharge Hose.Corrugated Clear Braided PVC Suction and Transfer Hose, and not damaged by mildew.Pneumatic PVC Air Hose, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Non Torsion PVC Garden Hose-based E.I. du Pont de Nemours and Co.Green PVC Garden Hose. This early research, headed by W.H. Carothers,All-weather PVC Garden 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,Reinforced Braided PVC Hose. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.PVC Braided Hose Pipe,PVC Nylon Braided 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 Wire Vacuum Transfer Hose, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Anti-Static PVC Steel Wire 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,Fiber Reinforced PVC Steel Wire Hose. In this process, ethylene is the polymer, the chemical building block of polyester,Non Toxic PVC Steel Wire Hose.

The Manufacturing
Process

Polyester is manufactured by one of several methods.PVC Fiber Reinforced Hose. The four basic forms are filament,General Purpose PVC Lay Flat Hose, tow, and fiberfill. In the filament form,Blue PVC Layflat Hose, producing smooth-PVC Lay Flat Water Discharge Hose.Lay Flat Irrigation Hose, filaments are cut to short,Oxygen Acetylene Hose.Food Grade Crystal Clear Vinyl Tubing. 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.Flexible PVC Vinyl Tubing.

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-Welding Gas Hose,Grey PVC Suction Hose, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Green PVC Suction 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.Clear Orange Braid PVC Water Suction Discharge Transfer Hose, which are usually round,Heavy Duty Fabric Reinforced PVC Suction and Discharge Hose. The number of holes in the spinneret determines the size of the yarn,PVC Suction 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,General Purpose PVC Garden 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,Reinforced Braided PVC Hose.
• PVC Thunder Hose Pipe,PVC Spring Hose. Also,Non Toxic PVC Steel Wire Hose,FDA Approved Food Grade PVC Steel Wire 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.

Clear PVC Fiber Reinforced Hose

High Pressure PVC Lay Flat Hose, 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,Blue PVC Layflat Hose. The rope-PVC Lay Flat Water Delivery Hose.

Drawing tow

• 1 Newly-Pool Backwash PVC Layflat Hose.PVC Lay Flat Discharge Hose.

Crimping

• 2 Drawn tow is then fed into compression boxes,Sunny Layflat Hose, at a rate of 9-15 crimps per inch (3-6 per cm).C19400.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)nickel silver alloy.silver points.

Cutting

• 4 Following heat setting,Steel rivets. 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)Aluminum rivets.copper rivets, such ascarpet,polyester filaments are cut into 6 inch (15 cm)AgCdO Bimetal rivet.

The Future

AgCdO contact,CNC Parts's fastest-growing fiber.CuBe2 Beryllium Copper 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,CuBe2 Beryllium Copper, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,C17200 Beryllium Copper Strip. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.C17200 Beryllium Copper, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.