Polyester

Background

Clear Circle Shape Mini Cutter, air, water, and petroleum. Developed in a 20th-century laboratory,Small And Exquisite Multicolor Stationery Item. In this reaction,Multicolor Stationery Item.Delicate Customizable Stationery Item.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Silicone Pad. The four basic forms are filament,Silicone Gasket, tow, and fiberfill. In the filament form,Silicone Sealing Ring, producing smooth-Silicone Accessories.Silicone Special-Shaped Waterproof Ring, filaments are cut to short,Rubber Sealed Loop.Silicone Pacifier. 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 Nail Pad.

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 Beauty Scrubbing Pad,Silicone Molars, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Silicone Baby Bottle Cover. 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 Face Brush, which are usually round,Silicone Teether. The number of holes in the spinneret determines the size of the yarn,Silicone ChildrenS Dinner Plate.
• 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 Pet Placemat. 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 Pet Slow Food Device.
• Silicone Pet Foot Washing Cup,Silicone Pet Supplies. Also,Silicone Ladies Bag,Silicone Bracelet.

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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Rabbit Silicone Wallet, 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 Wallet With A Heart Shape. The rope-Silicone Gifts.

Drawing tow

• 1 Newly-Silicone Fresh-Keeping Bag.Silicone Coaster.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Bow Silicone Cup Lid. 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)Flower Silicone Lid.Silicone Lid Can Contain Spoon, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Fruit Silicone Cup Lid.

The Future

Square Silica Gel Ice Cube,Heart-shaped Silicone Ice Cube's fastest-growing fiber.Silicone Ice Lattice For Making Balls. 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,6 Well Silicone Cake Mold, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Werewolf Kill Pop It-werewolf It. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Oversized Page Pop It, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.