Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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

Drying

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

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 ChildrenS Dinner Plate

Silicone Pet Placemat, 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 Slow Food Device. The rope-Silicone Pet Foot Washing Cup.

Drawing tow

• 1 Newly-Silicone Pet Supplies.Silicone Ladies Bag.

Crimping

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

Setting

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

Cutting

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

The Future

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