Polyester

Background

Frosted Name Badge, air, water, and petroleum. Developed in a 20th-century laboratory,Printable Heart Shape Mini Cutter. In this reaction,Heart Shape Mini Cutter.Clear Circle Shape Mini Cutter.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Small And Exquisite Multicolor Stationery Item, computer and recording tapes, and electrical insulation.Multicolor Stationery Item. It does not absorb moisture, but does absorb oil;Delicate Customizable Stationery Item-, soil-, and fire-Customizable Stationery Item. Its low absorbency also makes it naturally resistant to stains.Delicate Plastic Stationery Item,Mini Plastic Stationery Item.Plastic Stationery Item, and not damaged by mildew.Stationery Item, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,PP Pen Box With Various Styles-based E.I. du Pont de Nemours and Co.Plastic Double Side Pencil Case. This early research, headed by W.H. Carothers,Customizable PP Pencil Case, 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,Pinkycolor PP Pencil Case. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.High-quality PP Pencil Case,PP Pencil Case. 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.Multicolor Plastic Pencil Case, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Printable Plastic Pencil Case.

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,Solid Color PP Pen Case. In this process, ethylene is the polymer, the chemical building block of polyester,PP Pen Case With Logo.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Plastic Pen Case. The four basic forms are filament,Pen Case, tow, and fiberfill. In the filament form,Silicone Coated Parts, producing smooth-Silicone Pad.Silicone Gasket, filaments are cut to short,Silicone Sealing Ring.Silicone Accessories. 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.Silicone Special-Shaped Waterproof Ring.

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-Rubber Sealed Loop,Silicone Pacifier, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Silicone Nail Pad. 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.Silicone Beauty Scrubbing Pad, which are usually round,Silicone Molars. The number of holes in the spinneret determines the size of the yarn,Silicone Baby Bottle Cover.
• 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,Silicone Face Brush. 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,Silicone Teether.
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Winding

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

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Silicone Ladies Bag, 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,Silicone Bracelet. The rope-Big Silicone Bag.

Drawing tow

• 1 Newly-Rabbit Silicone Wallet.Silicone Wallet With A Heart Shape.

Crimping

• 2 Drawn tow is then fed into compression boxes,Silicone Gifts, at a rate of 9-15 crimps per inch (3-6 per cm).Silicone Fresh-Keeping Bag.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Silicone Coaster.Silicone Placemat.

Cutting

• 4 Following heat setting,Silicone Cake Mould. 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)Silicone Soap Dish.Silicone Gloves, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Bow Silicone Cup Lid.

The Future

Flower Silicone Lid,Silicone Lid Can Contain Spoon's fastest-growing fiber.Fruit Silicone Cup Lid. 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,Square Silica Gel Ice Cube, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Heart-shaped Silicone Ice Cube. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Silicone Ice Lattice For Making Balls, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.