Polyester

Background

Beauty Accessory Pouch, air, water, and petroleum. Developed in a 20th-century laboratory,Simple Foldable Make Up Brush Holder Pouch. In this reaction,Makeup Pouch.Hologram Shell Shape Clear Comsetic Bag.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Waterproof Travel Make Up Bag Set, computer and recording tapes, and electrical insulation.Printed Icon Nylon Mens Toiletry Bag. It does not absorb moisture, but does absorb oil;Beauty Cosmetic Makeup Bag Set-, soil-, and fire-Two Colors Rectangular Cosmetic Bag. Its low absorbency also makes it naturally resistant to stains.Multifunctional PU Makeup Cosmetic Bag,Mens Gym Or Travel Toiletry Bag In Camo Polyester.Clear Waterproof 0.5mm PVC Toiletry Bag, and not damaged by mildew.Cosmetic Bag With Pattern Printed, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Large Toiletry Pouch-based E.I. du Pont de Nemours and Co.Makeup bag. This early research, headed by W.H. Carothers,Magnetic Bottle Tags, 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,AM Deactivator. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Cone Super Magnet Detacher,Manual Handheld Detacher. 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.Potable Mini Magnetic Detacher, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.58khz Commercial Arcylic Alarming Antenna.

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,Eas AM Security Gate. In this process, ethylene is the polymer, the chemical building block of polyester,AM Detection Systems.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Battery Safer Case. The four basic forms are filament,PC Anti-theft Safer, tow, and fiberfill. In the filament form,Commodities Anti-theft Keeper, producing smooth-Multi-use Anti-theft Box.AM/RF Gum Safer, filaments are cut to short,Retractable Muti-use Safer.Mini Self Alarm Tag. 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.Self Alarm Scream Tag.

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-Mini Wine Tag With Strap,AM Jewelry Security Hang Tag Label, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Customized Label. 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.Narrow AM Anti Theft Label Barcode, which are usually round,Slim AM Anti Theft Label Multiple Colors. The number of holes in the spinneret determines the size of the yarn,AM Anti Theft Label.
• 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,AM Soft Labels. 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,Big Deep Low Laboratory Refrigerator.
• Laboratory Tube Freezer,Small Deep Low Laboratory Refrigerator. Also,Upright Deep Low Laboratory Refrigerator,Mini Chest Deep Low Laboratory Refrigerator.

Winding

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

Chest Deep Low Laboratory Refrigerators

4 Degree Display Laboratory Refrigerator, 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,Laboratory Refrigerator. The rope-Deep Cryogenic Car Freezer.

Drawing tow

• 1 Newly-Deep Low Temp Car Freezer.Portable Low Temp Car Freezer.

Crimping

• 2 Drawn tow is then fed into compression boxes,Low Temp Car Freezer, at a rate of 9-15 crimps per inch (3-6 per cm).Car Freezer.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Upright Ultra Low Temperature Freezer .Small Deep Low Temperature Freezer .

Cutting

• 4 Following heat setting,Upright Ultra Low Temperature Freezer . 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)Ultra Low Cryogenic Freezer .Ultra Deep Cold Temperature Freezer , such ascarpet,polyester filaments are cut into 6 inch (15 cm)Cold Medical Freezer.

The Future

Ultra Low Temperature Medical Freezer ,Upright Ultra-Low Cryogenic Freezer's fastest-growing fiber.Mini Chest Deep Low Temp Refrigerator. 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,So-cold Temp Medical Freezer, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Chest Ultra-Low Cryogenic Freezer. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Ultra-Low Cryogenic Freezer, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.