Polyester

Background

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

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Square Waterfall Small Top Shower Head. The four basic forms are filament,Small Top Shower Head, tow, and fiberfill. In the filament form,ABS Plastic Five-Function Hand Shower, producing smooth-Household Five-Function Handheld Shower.Household Switch Hand Shower Head, filaments are cut to short,Double-sided Electroplating Hand Shower.Electroplating 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.Round 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 Five-function Hand Shower,Single Function Round Hand Shower Head, is extruded through a slot to form long ribbons.

Drying

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

Charming Printed Cosmetic Bag

Customized cosmetic 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,Rectangular Cosmetic Bag. The rope-Nylon mesh pouch promotion.

Drawing tow

• 1 Newly-Velvet Makeup Pouch.Travel beauty pouch.

Crimping

• 2 Drawn tow is then fed into compression boxes,Cosmetic makeup bag, at a rate of 9-15 crimps per inch (3-6 per cm).Toiletry travel bag.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Exceptional toiletry travel bag.Mens Toiletry Bag.

Cutting

• 4 Following heat setting,Clear Travel 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)PVC beauty case.TPU makeup case, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Women 3 Pack Cosmetic Bag Set Small Travel Toiletry Case Beauty Pouch Organizer.

The Future

Bling Sequin Zippered Makeup Pouch,Double Layer Flannelette Cosmetic Bag With PVC Cover On Top's fastest-growing fiber.Eye Catching Promotion Mesh Pouch And Small Simple Nylon Flat 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 Accessory Pouch, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Simple Foldable Make Up Brush Holder Pouch. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Makeup Pouch, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.