Polyester

Background

Magnet, air, water, and petroleum. Developed in a 20th-century laboratory,Double Card Injection Moulding Name Badge. In this reaction,PS Injection Moulding Name Badge.Injection Moulding Name Badge.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.High-quality PP Pencil Case. The four basic forms are filament,PP Pencil Case, tow, and fiberfill. In the filament form,Multicolor Plastic Pencil Case, producing smooth-Printable Plastic Pencil Case.Solid Color PP Pen Case, filaments are cut to short,PP Pen Case With Logo.Plastic Pen Case. 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.Pen Case.

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 Coated Parts,Silicone Pad, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Silicone Gasket. 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 Sealing Ring, which are usually round,Silicone Accessories. The number of holes in the spinneret determines the size of the yarn,Silicone Special-Shaped Waterproof Ring.
• 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,Rubber Sealed Loop. 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 Pacifier.
• Silicone Nail Pad,Silicone Beauty Scrubbing Pad. Also,Silicone Molars,Silicone Baby Bottle Cover.

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 Face Brush

Silicone Teether, 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 ChildrenS Dinner Plate. The rope-Silicone Pet Placemat.

Drawing tow

• 1 Newly-Silicone Pet Slow Food Device.Silicone Pet Foot Washing Cup.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Rabbit Silicone Wallet. 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 Wallet With A Heart Shape.Silicone Gifts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Silicone Fresh-Keeping Bag.

The Future

Silicone Coaster,Silicone Placemat's fastest-growing fiber.Silicone Cake Mould. 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,Silicone Soap Dish, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Silicone Gloves. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Bow Silicone Cup Lid, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.