Polyester

Background

Cotton Roll, air, water, and petroleum. Developed in a 20th-century laboratory,Medical Cotton. In this reaction,Gauze Balls.Lap Sponges.

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

History

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

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,Round Shower Set. In this process, ethylene is the polymer, the chemical building block of polyester,Round Shower Rail.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Shower Rail. The four basic forms are filament,Stainless Steel Polished Shower Hose, tow, and fiberfill. In the filament form,S.S. Shower Hose, producing smooth-Shower Hose.Ultra-thin Overhead Shower, filaments are cut to short,Classic Round Head Shower.Large Round 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.ABS Plastic Round Head 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-Classic Plating Overhead Shower,Waterfall Head Shower, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Electroplating Square Head Shower. 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.Yellow Square Head Shower, which are usually round,Temperature Control LED Shower Head. The number of holes in the spinneret determines the size of the yarn,LED 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,Square Waterfall Small Top Shower Head. 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,Small Top Shower Head.
• ABS Plastic Five-Function Hand Shower,Household Five-Function Handheld Shower. Also,Household Switch Hand Shower Head,Double-sided Electroplating Hand Shower.

Winding

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

Electroplating Round Hand Shower Head

Round 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,Large Size Five-function Hand Shower. The rope-Single Function Round Hand Shower Head.

Drawing tow

• 1 Newly-Electroplating Hand Shower Head.Large Size Hand Shower Head.

Crimping

• 2 Drawn tow is then fed into compression boxes,Large Size Five-function Hand Shower Head, at a rate of 9-15 crimps per inch (3-6 per cm).Five-function Chrome Hand Shower.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Three-function Hand Shower Head.Clear comsetic bag.

Cutting

• 4 Following heat setting,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)Make Up Brush Holder.Cute Cosmetic pouch, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Printed Cosmetic Bag.

The Future

Charming Printed Cosmetic Bag,Customized cosmetic bag's fastest-growing fiber.Rectangular Cosmetic 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,Nylon mesh pouch promotion, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Velvet Makeup Pouch. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Travel beauty pouch, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.