Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Rectangular Cosmetic Bag

Nylon mesh pouch promotion, 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,Velvet Makeup Pouch. The rope-Travel beauty pouch.

Drawing tow

• 1 Newly-Cosmetic makeup bag.Toiletry travel bag.

Crimping

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

Setting

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

Cutting

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

The Future

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