Polyester

Background

Round Shower Set, air, water, and petroleum. Developed in a 20th-century laboratory,Round Shower Rail. In this reaction,Shower Rail.Stainless Steel Polished Shower Hose.

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

History

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

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,Household Switch Hand Shower Head. In this process, ethylene is the polymer, the chemical building block of polyester,Double-sided Electroplating Hand Shower.

The Manufacturing
Process

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

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-Three-function Hand Shower Head,Clear comsetic bag, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Toiletry Bag. 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.Make Up Brush Holder, which are usually round,Cute Cosmetic pouch. The number of holes in the spinneret determines the size of the yarn,Printed Cosmetic 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,Charming Printed Cosmetic Bag. 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,Customized cosmetic bag.
• Rectangular Cosmetic Bag,Nylon mesh pouch promotion. Also,Velvet Makeup Pouch,Travel beauty pouch.

Winding

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

Cosmetic makeup bag

Toiletry travel bag, 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,Exceptional toiletry travel bag. The rope-Mens Toiletry Bag.

Drawing tow

• 1 Newly-Clear Travel Bag.PVC beauty case.

Crimping

• 2 Drawn tow is then fed into compression boxes,TPU makeup case, at a rate of 9-15 crimps per inch (3-6 per cm).Women 3 Pack Cosmetic Bag Set Small Travel Toiletry Case Beauty Pouch Organizer.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Bling Sequin Zippered Makeup Pouch.Double Layer Flannelette Cosmetic Bag With PVC Cover On Top.

Cutting

• 4 Following heat setting,Eye Catching Promotion Mesh Pouch And Small Simple Nylon Flat Bag . 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)Beauty Accessory Pouch.Simple Foldable Make Up Brush Holder Pouch, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Makeup Pouch.

The Future

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