Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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-Silicone Special-Shaped Waterproof Ring,Rubber Sealed Loop, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Silicone Pacifier. 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 Nail Pad, which are usually round,Silicone Beauty Scrubbing Pad. The number of holes in the spinneret determines the size of the yarn,Silicone Molars.
• 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 Baby Bottle Cover. 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 Face Brush.
• Silicone Teether,Silicone ChildrenS Dinner Plate. Also,Silicone Pet Placemat,Silicone Pet Slow Food Device.

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 Pet Supplies, 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 Ladies Bag. The rope-Silicone Bracelet.

Drawing tow

• 1 Newly-Big Silicone Bag.Rabbit Silicone Wallet.

Crimping

• 2 Drawn tow is then fed into compression boxes,Silicone Wallet With A Heart Shape, at a rate of 9-15 crimps per inch (3-6 per cm).Silicone Gifts.

Setting

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

Cutting

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

The Future

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