Polyester

Background

LED Shower Head, air, water, and petroleum. Developed in a 20th-century laboratory,Square Waterfall Small Top Shower Head. In this reaction,Small Top Shower Head.ABS Plastic Five-Function Hand Shower.

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

History

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

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,Printed Cosmetic Bag. In this process, ethylene is the polymer, the chemical building block of polyester,Charming Printed Cosmetic Bag.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Customized cosmetic bag. The four basic forms are filament,Rectangular Cosmetic Bag, tow, and fiberfill. In the filament form,Nylon mesh pouch promotion, producing smooth-Velvet Makeup Pouch.Travel beauty pouch, filaments are cut to short,Cosmetic makeup bag.Toiletry travel bag. 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.Exceptional toiletry travel 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-Mens Toiletry Bag,Clear Travel Bag, is extruded through a slot to form long ribbons.

Drying

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

Waterproof Travel Make Up Bag Set

Printed Icon Nylon Mens Toiletry 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,Beauty Cosmetic Makeup Bag Set. The rope-Two Colors Rectangular Cosmetic Bag.

Drawing tow

• 1 Newly-Multifunctional PU Makeup Cosmetic Bag.Mens Gym Or Travel Toiletry Bag In Camo Polyester.

Crimping

• 2 Drawn tow is then fed into compression boxes,Clear Waterproof 0.5mm PVC Toiletry Bag, at a rate of 9-15 crimps per inch (3-6 per cm).Cosmetic Bag With Pattern Printed.

Setting

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

Cutting

• 4 Following heat setting,Magnetic Bottle Tags. 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)AM Deactivator.Cone Super Magnet Detacher, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Manual Handheld Detacher.

The Future

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