Polyester

Background

Yellow Square Head Shower, air, water, and petroleum. Developed in a 20th-century laboratory,Temperature Control LED Shower Head. In this reaction,LED Shower Head.Square Waterfall Small Top Shower Head.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Small Top Shower Head, computer and recording tapes, and electrical insulation.ABS Plastic Five-Function Hand Shower. It does not absorb moisture, but does absorb oil;Household Five-Function Handheld Shower-, soil-, and fire-Household Switch Hand Shower Head. Its low absorbency also makes it naturally resistant to stains.Double-sided Electroplating Hand Shower,Electroplating Round Hand Shower Head.Round Hand Shower Head, and not damaged by mildew.Large Size Five-function Hand Shower, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Single Function Round Hand Shower Head-based E.I. du Pont de Nemours and Co.Electroplating Hand Shower Head. This early research, headed by W.H. Carothers,Large Size Hand Shower Head, 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,Large Size Five-function Hand Shower Head. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Five-function Chrome Hand Shower,Three-function Hand Shower Head. 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.Clear comsetic bag, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Toiletry Bag.

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,Make Up Brush Holder. In this process, ethylene is the polymer, the chemical building block of polyester,Cute Cosmetic pouch.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Printed Cosmetic Bag. The four basic forms are filament,Charming Printed Cosmetic Bag, tow, and fiberfill. In the filament form,Customized cosmetic bag, producing smooth-Rectangular Cosmetic Bag.Nylon mesh pouch promotion, filaments are cut to short,Velvet Makeup Pouch.Travel beauty pouch. 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.Cosmetic makeup bag.

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-Toiletry travel bag,Exceptional toiletry travel bag, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Mens Toiletry Bag. 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.Clear Travel Bag, which are usually round,PVC beauty case. The number of holes in the spinneret determines the size of the yarn,TPU makeup case.
• 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,Women 3 Pack Cosmetic Bag Set Small Travel Toiletry Case Beauty Pouch Organizer. 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,Bling Sequin Zippered Makeup Pouch.
• Double Layer Flannelette Cosmetic Bag With PVC Cover On Top,Eye Catching Promotion Mesh Pouch And Small Simple Nylon Flat Bag . Also,Beauty Accessory Pouch,Simple Foldable Make Up Brush Holder Pouch.

Winding

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

Makeup Pouch

Hologram Shell Shape 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,Waterproof Travel Make Up Bag Set. The rope-Printed Icon Nylon Mens Toiletry Bag.

Drawing tow

• 1 Newly-Beauty Cosmetic Makeup Bag Set.Two Colors Rectangular Cosmetic Bag.

Crimping

• 2 Drawn tow is then fed into compression boxes,Multifunctional PU Makeup Cosmetic Bag, at a rate of 9-15 crimps per inch (3-6 per cm).Mens Gym Or Travel Toiletry Bag In Camo Polyester.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Clear Waterproof 0.5mm PVC Toiletry Bag.Cosmetic Bag With Pattern Printed.

Cutting

• 4 Following heat setting,Large Toiletry 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)Makeup bag.Magnetic Bottle Tags, such ascarpet,polyester filaments are cut into 6 inch (15 cm)AM Deactivator.

The Future

Cone Super Magnet Detacher,Manual Handheld Detacher's fastest-growing fiber.Potable Mini Magnetic Detacher. 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,58khz Commercial Arcylic Alarming Antenna, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Eas AM Security Gate. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.AM Detection Systems, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.