Polyester

Background

Women 3 Pack Cosmetic Bag Set Small Travel Toiletry Case Beauty Pouch Organizer, air, water, and petroleum. Developed in a 20th-century laboratory,Bling Sequin Zippered Makeup Pouch. In this reaction,Double Layer Flannelette Cosmetic Bag With PVC Cover On Top.Eye Catching Promotion Mesh Pouch And Small Simple Nylon Flat Bag .

Polyester is used in the manufacture of many products, including clothing, home furnishings,Beauty Accessory Pouch, computer and recording tapes, and electrical insulation.Simple Foldable Make Up Brush Holder Pouch. It does not absorb moisture, but does absorb oil;Makeup Pouch-, soil-, and fire-Hologram Shell Shape Clear Comsetic Bag. Its low absorbency also makes it naturally resistant to stains.Waterproof Travel Make Up Bag Set,Printed Icon Nylon Mens Toiletry Bag.Beauty Cosmetic Makeup Bag Set, and not damaged by mildew.Two Colors Rectangular Cosmetic Bag, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Multifunctional PU Makeup Cosmetic Bag-based E.I. du Pont de Nemours and Co.Mens Gym Or Travel Toiletry Bag In Camo Polyester. This early research, headed by W.H. Carothers,Clear Waterproof 0.5mm PVC Toiletry Bag, 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,Cosmetic Bag With Pattern Printed. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Large Toiletry Pouch,Makeup 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.Magnetic Bottle Tags, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.AM Deactivator.

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,Cone Super Magnet Detacher. In this process, ethylene is the polymer, the chemical building block of polyester,Manual Handheld Detacher.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Potable Mini Magnetic Detacher. The four basic forms are filament,58khz Commercial Arcylic Alarming Antenna, tow, and fiberfill. In the filament form,Eas AM Security Gate, producing smooth-AM Detection Systems.Battery Safer Case, filaments are cut to short,PC Anti-theft Safer.Commodities Anti-theft Keeper. 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.Multi-use Anti-theft Box.

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-AM/RF Gum Safer,Retractable Muti-use Safer, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Mini Self Alarm Tag. 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.Self Alarm Scream Tag, which are usually round,Mini Wine Tag With Strap. The number of holes in the spinneret determines the size of the yarn,AM Jewelry Security Hang Tag 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,Customized Label. 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,Narrow AM Anti Theft Label Barcode.
• Slim AM Anti Theft Label Multiple Colors,AM Anti Theft Label. Also,AM Soft Labels,Big 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.

Laboratory Tube Freezer

Small Deep Low 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,Upright Deep Low Laboratory Refrigerator. The rope-Mini Chest Deep Low Laboratory Refrigerator.

Drawing tow

• 1 Newly-Chest Deep Low Laboratory Refrigerators.4 Degree Display Laboratory Refrigerator.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Deep Low Temp Car Freezer.Portable Low Temp Car Freezer.

Cutting

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

The Future

Upright Ultra Low Temperature Freezer ,Ultra Low Cryogenic Freezer 's fastest-growing fiber.Ultra Deep Cold Temperature Freezer . 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,Cold Medical Freezer, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Ultra Low Temperature Medical Freezer . Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Upright 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.