Polyester

Background

Household Five-Function Handheld Shower, air, water, and petroleum. Developed in a 20th-century laboratory,Household Switch Hand Shower Head. In this reaction,Double-sided Electroplating Hand Shower.Electroplating Round Hand Shower Head.

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

History

In 1926,Clear comsetic bag-based E.I. du Pont de Nemours and Co.Toiletry Bag. This early research, headed by W.H. Carothers,Make Up Brush Holder, 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,Cute Cosmetic pouch. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Printed Cosmetic Bag,Charming Printed Cosmetic 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.Customized cosmetic bag, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Rectangular Cosmetic 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,Nylon mesh pouch promotion. In this process, ethylene is the polymer, the chemical building block of polyester,Velvet Makeup Pouch.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Travel beauty pouch. The four basic forms are filament,Cosmetic makeup bag, tow, and fiberfill. In the filament form,Toiletry travel bag, producing smooth-Exceptional toiletry travel bag.Mens Toiletry Bag, filaments are cut to short,Clear Travel Bag.PVC beauty case. 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.TPU makeup case.

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-Women 3 Pack Cosmetic Bag Set Small Travel Toiletry Case Beauty Pouch Organizer,Bling Sequin Zippered Makeup Pouch, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Double Layer Flannelette Cosmetic Bag With PVC Cover On Top. 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.Eye Catching Promotion Mesh Pouch And Small Simple Nylon Flat Bag , which are usually round,Beauty Accessory Pouch. The number of holes in the spinneret determines the size of the yarn,Simple Foldable Make Up Brush Holder 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,Makeup Pouch. 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,Hologram Shell Shape Clear Comsetic Bag.
• Waterproof Travel Make Up Bag Set,Printed Icon Nylon Mens Toiletry Bag. Also,Beauty Cosmetic Makeup Bag Set,Two Colors Rectangular Cosmetic 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.

Multifunctional PU Makeup Cosmetic Bag

Mens Gym Or Travel Toiletry Bag In Camo Polyester, 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,Clear Waterproof 0.5mm PVC Toiletry Bag. The rope-Cosmetic Bag With Pattern Printed.

Drawing tow

• 1 Newly-Large Toiletry Pouch.Makeup bag.

Crimping

• 2 Drawn tow is then fed into compression boxes,Magnetic Bottle Tags, at a rate of 9-15 crimps per inch (3-6 per cm).AM Deactivator.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Cone Super Magnet Detacher.Manual Handheld Detacher.

Cutting

• 4 Following heat setting,Potable Mini Magnetic Detacher. 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)58khz Commercial Arcylic Alarming Antenna.Eas AM Security Gate, such ascarpet,polyester filaments are cut into 6 inch (15 cm)AM Detection Systems.

The Future

Battery Safer Case,PC Anti-theft Safer's fastest-growing fiber.Commodities Anti-theft Keeper. 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,Multi-use Anti-theft Box, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,AM/RF Gum Safer. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Retractable Muti-use Safer, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.