Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Customized cosmetic bag

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

Drawing tow

• 1 Newly-Travel beauty pouch.Cosmetic makeup bag.

Crimping

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

Setting

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

Cutting

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

The Future

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