Polyester

Background

Waterproof Travel Make Up Bag Set, air, water, and petroleum. Developed in a 20th-century laboratory,Printed Icon Nylon Mens Toiletry Bag. In this reaction,Beauty Cosmetic Makeup Bag Set.Two Colors Rectangular Cosmetic Bag.

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

History

In 1926,Cone Super Magnet Detacher-based E.I. du Pont de Nemours and Co.Manual Handheld Detacher. This early research, headed by W.H. Carothers,Potable Mini Magnetic Detacher, 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 1946,58khz Commercial Arcylic Alarming Antenna. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Eas AM Security Gate,AM Detection Systems. 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.Battery Safer Case, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.PC Anti-theft Safer.

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,Commodities Anti-theft Keeper. In this process, ethylene is the polymer, the chemical building block of polyester,Multi-use Anti-theft Box.

The Manufacturing
Process

Polyester is manufactured by one of several methods.AM/RF Gum Safer. The four basic forms are filament,Retractable Muti-use Safer, tow, and fiberfill. In the filament form,Mini Self Alarm Tag, producing smooth-Self Alarm Scream Tag.Mini Wine Tag With Strap, filaments are cut to short,AM Jewelry Security Hang Tag Label.Customized Label. 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.Narrow AM Anti Theft Label Barcode.

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-Slim AM Anti Theft Label Multiple Colors,AM Anti Theft Label, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,AM Soft Labels. 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.Big Deep Low Laboratory Refrigerator, which are usually round,Laboratory Tube Freezer. The number of holes in the spinneret determines the size of the yarn,Small Deep Low Laboratory Refrigerator.
• 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,Upright Deep Low Laboratory Refrigerator. 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,Mini Chest Deep Low Laboratory Refrigerator.
• Chest Deep Low Laboratory Refrigerators,4 Degree Display Laboratory Refrigerator. Also,Laboratory Refrigerator,Deep Cryogenic Car Freezer.

Winding

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

Deep Low Temp Car Freezer

Portable Low Temp Car Freezer, 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,Low Temp Car Freezer. The rope-Car Freezer.

Drawing tow

• 1 Newly-Upright Ultra Low Temperature Freezer .Small Deep Low Temperature Freezer .

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Ultra Low Temperature Medical 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)Upright Ultra-Low Cryogenic Freezer.Mini Chest Deep Low Temp Refrigerator, such ascarpet,polyester filaments are cut into 6 inch (15 cm)So-cold Temp Medical Freezer.

The Future

Chest Ultra-Low Cryogenic Freezer,Ultra-Low Cryogenic Freezer's fastest-growing fiber.Temperature Controlled Shakers. 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,2-8 Degrees Glass Door Pharmacy Vaccine Refrigerator, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Visible Display Pharmacy Refrigerator . Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Mini Display Pharmacy Refrigerator , a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.