Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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

Drying

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

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 Teether

Silicone ChildrenS Dinner Plate, 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 Pet Placemat. The rope-Silicone Pet Slow Food Device.

Drawing tow

• 1 Newly-Silicone Pet Foot Washing Cup.Silicone Pet Supplies.

Crimping

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

Setting

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

Cutting

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

The Future

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