Polyester

Background

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

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

History

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

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

The Manufacturing
Process

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

Drying

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

Hologram Shell Shape Clear Comsetic Bag

Waterproof Travel Make Up Bag Set, 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 Icon Nylon Mens Toiletry Bag. The rope-Beauty Cosmetic Makeup Bag Set.

Drawing tow

• 1 Newly-Two Colors Rectangular Cosmetic Bag.Multifunctional PU Makeup Cosmetic Bag.

Crimping

• 2 Drawn tow is then fed into compression boxes,Mens Gym Or Travel Toiletry Bag In Camo Polyester, at a rate of 9-15 crimps per inch (3-6 per cm).Clear Waterproof 0.5mm PVC Toiletry Bag.

Setting

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

Cutting

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

The Future

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