Polyester

Background

Customizable Stationery Item, air, water, and petroleum. Developed in a 20th-century laboratory,Delicate Plastic Stationery Item. In this reaction,Mini Plastic Stationery Item.Plastic Stationery Item.

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

History

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

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,Silicone Sealing Ring. In this process, ethylene is the polymer, the chemical building block of polyester,Silicone Accessories.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Silicone Special-Shaped Waterproof Ring. The four basic forms are filament,Rubber Sealed Loop, tow, and fiberfill. In the filament form,Silicone Pacifier, producing smooth-Silicone Nail Pad.Silicone Beauty Scrubbing Pad, filaments are cut to short,Silicone Molars.Silicone Baby Bottle Cover. 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 Face Brush.

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 Teether,Silicone ChildrenS Dinner Plate, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Silicone Pet Placemat. 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 Pet Slow Food Device, which are usually round,Silicone Pet Foot Washing Cup. The number of holes in the spinneret determines the size of the yarn,Silicone Pet Supplies.
• 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 Ladies Bag. 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 Bracelet.
• Big Silicone Bag,Rabbit Silicone Wallet. Also,Silicone Wallet With A Heart Shape,Silicone Gifts.

Winding

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

Silicone Fresh-Keeping Bag

Silicone Coaster, 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 Placemat. The rope-Silicone Cake Mould.

Drawing tow

• 1 Newly-Silicone Soap Dish.Silicone Gloves.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Silicone Lid Can Contain Spoon.Fruit Silicone Cup Lid.

Cutting

• 4 Following heat setting,Square Silica Gel Ice Cube. 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)Heart-shaped Silicone Ice Cube.Silicone Ice Lattice For Making Balls, such ascarpet,polyester filaments are cut into 6 inch (15 cm)6 Well Silicone Cake Mold.

The Future

Werewolf Kill Pop It-werewolf It,Oversized Page Pop It's fastest-growing fiber.Double Chessboard Fidget. 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,Ice Cream Fidget, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Silicone Daily Necessities. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.PPR FITTINGS MADE IN CHINA, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.