Polyester

Background

Non Torsion PVC Garden Hose, air, water, and petroleum. Developed in a 20th-century laboratory,Green PVC Garden Hose. In this reaction,All-weather PVC Garden Hose.Reinforced Braided PVC Hose.

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

History

In 1926,Blue PVC Layflat Hose-based E.I. du Pont de Nemours and Co.PVC Lay Flat Water Discharge Hose. This early research, headed by W.H. Carothers,Lay Flat Irrigation 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,Oxygen Acetylene Hose. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Food Grade Crystal Clear Vinyl Tubing,Flexible PVC Vinyl Tubing. 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.Welding Gas Hose, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Grey PVC Suction 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,Green PVC Suction Hose. In this process, ethylene is the polymer, the chemical building block of polyester,Clear Orange Braid PVC Water Suction Discharge Transfer Hose.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Heavy Duty Fabric Reinforced PVC Suction and Discharge Hose. The four basic forms are filament,PVC Suction Hose, tow, and fiberfill. In the filament form,General Purpose PVC Garden Hose, producing smooth-Reinforced Braided PVC Hose.PVC Thunder Hose Pipe, filaments are cut to short,PVC Spring Hose.Non Toxic PVC Steel Wire 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.FDA Approved Food Grade PVC Steel Wire 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-Clear PVC Fiber Reinforced Hose,High Pressure PVC Lay Flat Hose, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Blue PVC Layflat 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.PVC Lay Flat Water Delivery Hose, which are usually round,Pool Backwash PVC Layflat Hose. The number of holes in the spinneret determines the size of the yarn,PVC Lay Flat Discharge 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,Sunny Layflat 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,C19400.
• nickel silver alloy,silver points. Also,Steel rivets,Aluminum rivets.

Winding

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

copper rivets

AgCdO Bimetal rivet, 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,AgCdO contact. The rope-CNC Parts.

Drawing tow

• 1 Newly-CuBe2 Beryllium Copper Strip.CuBe2 Beryllium Copper.

Crimping

• 2 Drawn tow is then fed into compression boxes,C17200 Beryllium Copper Strip, at a rate of 9-15 crimps per inch (3-6 per cm).C17200 Beryllium Copper.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Beryllium Copper.CuSn6 Phosphor Bronze Strip.

Cutting

• 4 Following heat setting,C51900 Bronze 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)C51000 Bronze Strip.CuSn5 Phosphor Bronze Strip, such ascarpet,polyester filaments are cut into 6 inch (15 cm)C5100 Bronze Strip.

The Future

C28000 Brass Strip,H63 Brass Strip Coil's fastest-growing fiber.C27000 CuZn35 Brass. 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,H65 Brass Strip Coil, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,C26000 CuZn30 Brass Strip. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.H80 Brass Strip Coil, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.