Polyester

Background

Small Plastic Clip, air, water, and petroleum. Developed in a 20th-century laboratory,Clear Mini Plastic Clip. In this reaction,Mini Plastic Clip.A5 Plastic Clipboard.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Clear A4 Plastic Clipboard, computer and recording tapes, and electrical insulation.Transparent Magnet. It does not absorb moisture, but does absorb oil;Magnet-, soil-, and fire-Double Card Injection Moulding Name Badge. Its low absorbency also makes it naturally resistant to stains.PS Injection Moulding Name Badge,Injection Moulding Name Badge.PVC Frosted Name Badge, and not damaged by mildew.Frosted Name Badge With Metal Clip, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Frosted Name Badge-based E.I. du Pont de Nemours and Co.Printable Heart Shape Mini Cutter. This early research, headed by W.H. Carothers,Heart Shape Mini Cutter, 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,Clear Circle Shape Mini Cutter. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Small And Exquisite Multicolor Stationery Item,Multicolor 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.Delicate Customizable Stationery Item, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Customizable Stationery Item.

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,Delicate Plastic Stationery Item. In this process, ethylene is the polymer, the chemical building block of polyester,Mini Plastic Stationery Item.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Plastic Stationery Item. The four basic forms are filament,Stationery Item, tow, and fiberfill. In the filament form,PP Pen Box With Various Styles, producing smooth-Plastic Double Side Pencil Case.Customizable PP Pencil Case, filaments are cut to short,Pinkycolor PP Pencil Case.High-quality PP Pencil 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.PP Pencil 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-Multicolor Plastic Pencil Case,Printable Plastic Pencil Case, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Solid Color PP Pen Case. 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.PP Pen Case With Logo, which are usually round,Plastic Pen Case. The number of holes in the spinneret determines the size of the yarn,Pen Case.
• 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 Coated Parts. 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 Pad.
• Silicone Gasket,Silicone Sealing Ring. Also,Silicone Accessories,Silicone Special-Shaped Waterproof Ring.

Winding

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

Rubber Sealed Loop

Silicone Pacifier, 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 Nail Pad. The rope-Silicone Beauty Scrubbing Pad.

Drawing tow

• 1 Newly-Silicone Molars.Silicone Baby Bottle Cover.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Silicone ChildrenS Dinner Plate.Silicone Pet Placemat.

Cutting

• 4 Following heat setting,Silicone Pet Slow Food Device. 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 Pet Foot Washing Cup.Silicone Pet Supplies, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Silicone Ladies Bag.

The Future

Silicone Bracelet,Big Silicone Bag's fastest-growing fiber.Rabbit Silicone Wallet. 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 Wallet With A Heart Shape, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Silicone Gifts. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Silicone Fresh-Keeping Bag, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.