Polyester

Background

Wire Drawing Core Die, air, water, and petroleum. Developed in a 20th-century laboratory,IC Semiconductor Packaging Mold. In this reaction,Lead Frame Mold.Lithium Battery Mould.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Cemented Carbide Mould, computer and recording tapes, and electrical insulation.Brass Clamp for pipe. It does not absorb moisture, but does absorb oil;BSPT Brass Compression Fitting-, soil-, and fire-462 MBL x MI Elbow. Its low absorbency also makes it naturally resistant to stains.363 MBL x FI Socket,MBL Fitting.Hose Fitting PEX, and not damaged by mildew.Flexible hose fitting, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,319 Extension Fitting-based E.I. du Pont de Nemours and Co.Brass Fitting. This early research, headed by W.H. Carothers,414 MI x FI Elbow, 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,ecFIT Brass Threaded Fitting. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.319 Extension Fitting,NPT Brass Threaded Fitting. 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.Brass Threaded Fitting, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.BSPT Brass Threaded Fitting.

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,312 MI x Socket. In this process, ethylene is the polymer, the chemical building block of polyester,Galvanized Fitting.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Nickel Plated Fitting. The four basic forms are filament,653 Wallplated Tee, tow, and fiberfill. In the filament form,Brass Compression Fitting, producing smooth-Chrome Plated Fitting.ecFIT Brass Fitting, filaments are cut to short,ecFIT Brass Compression Fitting.401 C x Elbow. 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.323 Stop End.

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-302 C x MI Coupler,BSP Brass Compression Fitting, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Other Products. 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.363 Series MBL x FI Socket, which are usually round,314 Series Bush. The number of holes in the spinneret determines the size of the yarn,315 Series Long Nipple.
• 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,318 Series FI x Union. 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,412 Series MI x Elbow.
• 317 Series Cap,323 Series Stop End. Also,401 C x Elbow,453 Series C x FI Wall Plated Elbow.

Winding

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

601 Series C x Tee

684 Series C x FI Tee, 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,All-stainless Kitchen Scissors. The rope-Upgrade Version Of Multi-purposed Kitchen Scissors.

Drawing tow

• 1 Newly-Kitchen Scissors For Small Task.Multi-purposed Scissors.

Crimping

• 2 Drawn tow is then fed into compression boxes,Kitchen Scissors Used For Cutting Chicken And Fish With Bone, at a rate of 9-15 crimps per inch (3-6 per cm).Y Shape Handle Julienne Blade.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)F Shape Serration Blade.F Shape Handle Serration Blade.

Cutting

• 4 Following heat setting,All-stainless Kitchen Scissors. 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)Multi-purposed Kitchen Scissors.Upgrade Version Of Multi-purposed Scissors, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Multi-purposed Scissors.

The Future

Chicken Bone Kitchen Scissors,Kitchen scissors Used For Cutting Fish With Bone's fastest-growing fiber.Kitchen scissors Used For Cutting Chicken. 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,Multi-function Y-shape Planer, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Peeler. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.5cr15mov Multi-purpose Kitchen Scissors Household Multi-functional Strong Chicken Bone All Steel Stainless Food, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.