Polyester

Background

K44 Tungsten Steel Fine Grinding Rod, air, water, and petroleum. Developed in a 20th-century laboratory,Tungsten Steel Single Straight Hole Threaded Round Rod With. In this reaction,TSF44 Tungsten Steel Carving Knife.JG Coordinate Grinding.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Tungsten Carbide Steel, computer and recording tapes, and electrical insulation.Stretch Stamping Die. It does not absorb moisture, but does absorb oil;Powder Metallurgy Mold-, soil-, and fire-Motor Progressive Die. Its low absorbency also makes it naturally resistant to stains.Stainless Steel LED Mould,Terminal Stamping Die.Wire Drawing Core Die, and not damaged by mildew.IC Semiconductor Packaging Mold, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Lead Frame Mold-based E.I. du Pont de Nemours and Co.Lithium Battery Mould. This early research, headed by W.H. Carothers,Cemented Carbide Mould, 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,Brass Clamp for pipe. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.BSPT Brass Compression Fitting,462 MBL x MI Elbow. 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.363 MBL x FI Socket, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.MBL 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,Hose Fitting PEX. In this process, ethylene is the polymer, the chemical building block of polyester,Flexible hose fitting.

The Manufacturing
Process

Polyester is manufactured by one of several methods.319 Extension Fitting. The four basic forms are filament,Brass Fitting, tow, and fiberfill. In the filament form,414 MI x FI Elbow, producing smooth-ecFIT Brass Threaded Fitting.319 Extension Fitting, filaments are cut to short,NPT Brass Threaded Fitting.Brass Threaded Fitting. 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.BSPT Brass Threaded Fitting.

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-312 MI x Socket,Galvanized Fitting, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Nickel Plated Fitting. 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.653 Wallplated Tee, which are usually round,Brass Compression Fitting. The number of holes in the spinneret determines the size of the yarn,Chrome Plated Fitting.
• 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,ecFIT Brass Fitting. 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,ecFIT Brass Compression Fitting.
• 401 C x Elbow,323 Stop End. Also,302 C x MI Coupler,BSP Brass Compression Fitting.

Winding

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

Other Products

363 Series MBL x FI Socket, 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,314 Series Bush. The rope-315 Series Long Nipple.

Drawing tow

• 1 Newly-318 Series FI x Union.412 Series MI x Elbow.

Crimping

• 2 Drawn tow is then fed into compression boxes,317 Series Cap, at a rate of 9-15 crimps per inch (3-6 per cm).323 Series Stop End.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)401 C x Elbow.453 Series C x FI Wall Plated Elbow.

Cutting

• 4 Following heat setting,601 Series C x Tee. 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)684 Series C x FI Tee.All-stainless Kitchen Scissors, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Upgrade Version Of Multi-purposed Kitchen Scissors.

The Future

Kitchen Scissors For Small Task,Multi-purposed Scissors's fastest-growing fiber.Kitchen Scissors Used For Cutting Chicken And Fish With Bone. 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,Y Shape Handle Julienne Blade, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,F Shape Serration Blade. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.F Shape Handle Serration Blade, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.