Polyester

Background

Rectal Tube, air, water, and petroleum. Developed in a 20th-century laboratory,Silicone Laryngeal Mask. In this reaction,Respiratory Care.Shower Accessories.

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

History

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

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,Round 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.Large Size Five-function Hand Shower, which are usually round,Single Function Round Hand Shower Head. The number of holes in the spinneret determines the size of the yarn,Electroplating 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 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 Head.
• Five-function Chrome Hand Shower,Three-function Hand Shower Head. Also,Clear comsetic bag,Toiletry Bag.

Winding

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

Make Up Brush Holder

Cute Cosmetic 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,Printed Cosmetic Bag. The rope-Charming Printed Cosmetic Bag.

Drawing tow

• 1 Newly-Customized cosmetic bag.Rectangular Cosmetic Bag.

Crimping

• 2 Drawn tow is then fed into compression boxes,Nylon mesh pouch promotion, at a rate of 9-15 crimps per inch (3-6 per cm).Velvet Makeup Pouch.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Travel beauty pouch.Cosmetic makeup bag.

Cutting

• 4 Following heat setting,Toiletry travel 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)Exceptional toiletry travel bag.Mens Toiletry Bag, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Clear Travel Bag.

The Future

PVC beauty case,TPU makeup case's fastest-growing fiber.Women 3 Pack Cosmetic Bag Set Small Travel Toiletry Case Beauty Pouch Organizer. 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,Bling Sequin Zippered Makeup Pouch, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Double Layer Flannelette Cosmetic Bag With PVC Cover On Top. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Eye Catching Promotion Mesh Pouch And Small Simple Nylon Flat Bag , a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.