Polyester

Background

Urinary Leg Bag, air, water, and petroleum. Developed in a 20th-century laboratory,Nebulizer Mask. In this reaction,Venturi Mask.Resuscitator.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Nelaton Catheter, computer and recording tapes, and electrical insulation.Oxygen Mask With Reservoir Bagen. It does not absorb moisture, but does absorb oil;Rectal Tube-, soil-, and fire-Silicone Laryngeal Mask. Its low absorbency also makes it naturally resistant to stains.Respiratory Care,Shower Accessories.Classic Shower Set, and not damaged by mildew.Flat Shower Set, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Stainless Steel Chrome-plated Shower Set-based E.I. du Pont de Nemours and Co.Classic Electroplating Shower Set. This early research, headed by W.H. Carothers,Retractable Round Shower Rod Set, 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,Round Shower Set. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Round Shower Rail,Shower Rail. 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.Stainless Steel Polished Shower Hose, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.S.S. Shower Hose.

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,Shower Hose. In this process, ethylene is the polymer, the chemical building block of polyester,Ultra-thin Overhead Shower.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Classic Round Head Shower. The four basic forms are filament,Large Round Head Shower, tow, and fiberfill. In the filament form,ABS Plastic Round Head Shower, producing smooth-Classic Plating Overhead Shower.Waterfall Head Shower, filaments are cut to short,Electroplating Square Head Shower.Yellow Square Head 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.Temperature Control LED 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-LED Shower Head,Square Waterfall Small Top Shower Head, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Small Top 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.ABS Plastic Five-Function Hand Shower, which are usually round,Household Five-Function Handheld Shower. The number of holes in the spinneret determines the size of the yarn,Household Switch 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,Double-sided Electroplating 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,Electroplating Round Hand Shower Head.
• Round Hand Shower Head,Large Size Five-function Hand Shower. Also,Single Function Round Hand Shower Head,Electroplating Hand Shower Head.

Winding

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

Large Size Hand Shower Head

Large Size Five-function Hand Shower Head, 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,Five-function Chrome Hand Shower. The rope-Three-function Hand Shower Head.

Drawing tow

• 1 Newly-Clear comsetic bag.Toiletry Bag.

Crimping

• 2 Drawn tow is then fed into compression boxes,Make Up Brush Holder, at a rate of 9-15 crimps per inch (3-6 per cm).Cute Cosmetic pouch.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Printed Cosmetic Bag.Charming Printed Cosmetic Bag.

Cutting

• 4 Following heat setting,Customized cosmetic 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)Rectangular Cosmetic Bag.Nylon mesh pouch promotion, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Velvet Makeup Pouch.

The Future

Travel beauty pouch,Cosmetic makeup bag's fastest-growing fiber.Toiletry travel 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,Exceptional toiletry travel bag, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Mens Toiletry Bag. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Clear Travel Bag, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.