Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Sunny Layflat Hose

C19400, 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,nickel silver alloy. The rope-silver points.

Drawing tow

• 1 Newly-Steel rivets.Aluminum rivets.

Crimping

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

Setting

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

Cutting

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

The Future

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