Polyester

Background

Stainless Steel Chrome-plated Shower Set, air, water, and petroleum. Developed in a 20th-century laboratory,Classic Electroplating Shower Set. In this reaction,Retractable Round Shower Rod Set.Round Shower Set.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Round Shower Rail, computer and recording tapes, and electrical insulation.Shower Rail. It does not absorb moisture, but does absorb oil;Stainless Steel Polished Shower Hose-, soil-, and fire-S.S. Shower Hose. Its low absorbency also makes it naturally resistant to stains.Shower Hose,Ultra-thin Overhead Shower.Classic Round Head Shower, and not damaged by mildew.Large Round Head Shower, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,ABS Plastic Round Head Shower-based E.I. du Pont de Nemours and Co.Classic Plating Overhead Shower. This early research, headed by W.H. Carothers,Waterfall Head Shower, 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,Electroplating Square Head Shower. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Yellow Square Head Shower,Temperature Control LED Shower Head. 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.LED Shower Head, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Square Waterfall Small Top Shower Head.

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,Small Top Shower Head. In this process, ethylene is the polymer, the chemical building block of polyester,ABS Plastic Five-Function Hand Shower.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Household Five-Function Handheld Shower. The four basic forms are filament,Household Switch Hand Shower Head, tow, and fiberfill. In the filament form,Double-sided Electroplating Hand Shower, producing smooth-Electroplating Round Hand Shower Head.Round Hand Shower Head, filaments are cut to short,Large Size Five-function Hand Shower.Single Function Round Hand Shower Head. 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.Electroplating Hand Shower Head.

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-Large Size Hand Shower Head,Large Size Five-function Hand Shower Head, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Five-function Chrome Hand Shower. 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.Three-function Hand Shower Head, which are usually round,Clear comsetic bag. The number of holes in the spinneret determines the size of the yarn,Toiletry Bag.
• 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,Make Up Brush Holder. 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,Cute Cosmetic pouch.
• Printed Cosmetic Bag,Charming Printed Cosmetic Bag. Also,Customized cosmetic bag,Rectangular Cosmetic Bag.

Winding

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

Nylon mesh pouch promotion

Velvet Makeup Pouch, 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,Travel beauty pouch. The rope-Cosmetic makeup bag.

Drawing tow

• 1 Newly-Toiletry travel bag.Exceptional toiletry travel bag.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)PVC beauty case.TPU makeup case.

Cutting

• 4 Following heat setting,Women 3 Pack Cosmetic Bag Set Small Travel Toiletry Case Beauty Pouch Organizer. 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)Bling Sequin Zippered Makeup Pouch.Double Layer Flannelette Cosmetic Bag With PVC Cover On Top, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Eye Catching Promotion Mesh Pouch And Small Simple Nylon Flat Bag .

The Future

Beauty Accessory Pouch,Simple Foldable Make Up Brush Holder Pouch's fastest-growing fiber.Makeup Pouch. 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,Hologram Shell Shape Clear Comsetic Bag, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Waterproof Travel Make Up Bag Set. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Printed Icon Nylon Mens Toiletry Bag, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.