Polyester

Background

Venturi Mask, air, water, and petroleum. Developed in a 20th-century laboratory,Resuscitator. In this reaction,Nelaton Catheter.Oxygen Mask With Reservoir Bagen.

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

History

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

The Manufacturing
Process

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

Drying

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

Five-function Chrome Hand Shower

Three-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,Clear comsetic bag. The rope-Toiletry Bag.

Drawing tow

• 1 Newly-Make Up Brush Holder.Cute Cosmetic pouch.

Crimping

• 2 Drawn tow is then fed into compression boxes,Printed Cosmetic Bag, at a rate of 9-15 crimps per inch (3-6 per cm).Charming Printed Cosmetic Bag.

Setting

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

Cutting

• 4 Following heat setting,Nylon mesh pouch promotion. 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)Velvet Makeup Pouch.Travel beauty pouch, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Cosmetic makeup bag.

The Future

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