Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Winding

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

Velvet Makeup Pouch

Travel beauty pouch, 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,Cosmetic makeup bag. The rope-Toiletry travel bag.

Drawing tow

• 1 Newly-Exceptional toiletry travel bag.Mens Toiletry Bag.

Crimping

• 2 Drawn tow is then fed into compression boxes,Clear Travel Bag, at a rate of 9-15 crimps per inch (3-6 per cm).PVC beauty case.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)TPU makeup case.Women 3 Pack Cosmetic Bag Set Small Travel Toiletry Case Beauty Pouch Organizer.

Cutting

• 4 Following heat setting,Bling Sequin Zippered Makeup Pouch. 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)Double Layer Flannelette Cosmetic Bag With PVC Cover On Top.Eye Catching Promotion Mesh Pouch And Small Simple Nylon Flat Bag , such ascarpet,polyester filaments are cut into 6 inch (15 cm)Beauty Accessory Pouch.

The Future

Simple Foldable Make Up Brush Holder Pouch,Makeup Pouch's fastest-growing fiber.Hologram Shell Shape Clear Comsetic 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,Waterproof Travel Make Up Bag Set, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Printed Icon Nylon Mens Toiletry Bag. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Beauty Cosmetic Makeup 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.