Polyester

Background

Respiratory Care, air, water, and petroleum. Developed in a 20th-century laboratory,Shower Accessories. In this reaction,Classic Shower Set.Flat Shower Set.

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

History

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

The Manufacturing
Process

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

Drying

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

Printed Cosmetic Bag

Charming Printed 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,Customized cosmetic bag. The rope-Rectangular Cosmetic Bag.

Drawing tow

• 1 Newly-Nylon mesh pouch promotion.Velvet Makeup Pouch.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Mens Toiletry 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)Clear Travel Bag.PVC beauty case, such ascarpet,polyester filaments are cut into 6 inch (15 cm)TPU makeup case.

The Future

Women 3 Pack Cosmetic Bag Set Small Travel Toiletry Case Beauty Pouch Organizer,Bling Sequin Zippered Makeup Pouch's fastest-growing fiber.Double Layer Flannelette Cosmetic Bag With PVC Cover On Top. 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,Eye Catching Promotion Mesh Pouch And Small Simple Nylon Flat Bag , was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Beauty Accessory Pouch. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Simple Foldable Make Up Brush Holder Pouch, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.