Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Three-function Hand Shower Head

Clear comsetic 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,Toiletry Bag. The rope-Make Up Brush Holder.

Drawing tow

• 1 Newly-Cute Cosmetic pouch.Printed Cosmetic Bag.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Rectangular Cosmetic Bag.Nylon mesh pouch promotion.

Cutting

• 4 Following heat setting,Velvet 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)Travel beauty pouch.Cosmetic makeup bag, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Toiletry travel bag.

The Future

Exceptional toiletry travel bag,Mens Toiletry Bag's fastest-growing fiber.Clear 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,PVC beauty case, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,TPU makeup case. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Women 3 Pack Cosmetic Bag Set Small Travel Toiletry Case Beauty Pouch Organizer, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.