Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Winding

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

Cute Cosmetic pouch

Printed Cosmetic 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,Charming Printed Cosmetic Bag. The rope-Customized cosmetic bag.

Drawing tow

• 1 Newly-Rectangular Cosmetic Bag.Nylon mesh pouch promotion.

Crimping

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

Setting

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

Cutting

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

The Future

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