Polyester

Background

Mini Plastic Stationery Item, air, water, and petroleum. Developed in a 20th-century laboratory,Plastic Stationery Item. In this reaction,Stationery Item.PP Pen Box With Various Styles.

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

History

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

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 Special-Shaped Waterproof Ring. In this process, ethylene is the polymer, the chemical building block of polyester,Rubber Sealed Loop.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Silicone Pacifier. The four basic forms are filament,Silicone Nail Pad, tow, and fiberfill. In the filament form,Silicone Beauty Scrubbing Pad, producing smooth-Silicone Molars.Silicone Baby Bottle Cover, filaments are cut to short,Silicone Face Brush.Silicone Teether. 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 ChildrenS Dinner Plate.

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 Pet Placemat,Silicone Pet Slow Food Device, is extruded through a slot to form long ribbons.

Drying

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

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 Placemat

Silicone Cake Mould, 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 Soap Dish. The rope-Silicone Gloves.

Drawing tow

• 1 Newly-Bow Silicone Cup Lid.Flower Silicone Lid.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Square Silica Gel Ice Cube.Heart-shaped Silicone Ice Cube.

Cutting

• 4 Following heat setting,Silicone Ice Lattice For Making Balls. 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)6 Well Silicone Cake Mold.Werewolf Kill Pop It-werewolf It, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Oversized Page Pop It.

The Future

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