Polyester

Background

Clear comsetic bag, air, water, and petroleum. Developed in a 20th-century laboratory,Toiletry Bag. In this reaction,Make Up Brush Holder.Cute Cosmetic pouch.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Printed Cosmetic Bag, computer and recording tapes, and electrical insulation.Charming Printed Cosmetic Bag. It does not absorb moisture, but does absorb oil;Customized cosmetic bag-, soil-, and fire-Rectangular Cosmetic Bag. Its low absorbency also makes it naturally resistant to stains.Nylon mesh pouch promotion,Velvet Makeup Pouch.Travel beauty pouch, and not damaged by mildew.Cosmetic makeup bag, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Toiletry travel bag-based E.I. du Pont de Nemours and Co.Exceptional toiletry travel bag. This early research, headed by W.H. Carothers,Mens 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,Clear Travel Bag. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.PVC beauty case,TPU makeup case. 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.Women 3 Pack Cosmetic Bag Set Small Travel Toiletry Case Beauty Pouch Organizer, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Bling Sequin Zippered Makeup Pouch.

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,Double Layer Flannelette Cosmetic Bag With PVC Cover On Top. In this process, ethylene is the polymer, the chemical building block of polyester,Eye Catching Promotion Mesh Pouch And Small Simple Nylon Flat Bag .

The Manufacturing
Process

Polyester is manufactured by one of several methods.Beauty Accessory Pouch. The four basic forms are filament,Simple Foldable Make Up Brush Holder Pouch, tow, and fiberfill. In the filament form,Makeup Pouch, producing smooth-Hologram Shell Shape Clear Comsetic Bag.Waterproof Travel Make Up Bag Set, filaments are cut to short,Printed Icon Nylon Mens Toiletry Bag.Beauty Cosmetic Makeup Bag Set. 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.Two Colors Rectangular Cosmetic 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-Multifunctional PU Makeup Cosmetic Bag,Mens Gym Or Travel Toiletry Bag In Camo Polyester, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Clear Waterproof 0.5mm PVC Toiletry 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.Cosmetic Bag With Pattern Printed, which are usually round,Large Toiletry Pouch. The number of holes in the spinneret determines the size of the yarn,Makeup bag.
• 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,Magnetic Bottle Tags. 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,AM Deactivator.
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Winding

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

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AM Detection Systems, 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,Battery Safer Case. The rope-PC Anti-theft Safer.

Drawing tow

• 1 Newly-Commodities Anti-theft Keeper.Multi-use Anti-theft Box.

Crimping

• 2 Drawn tow is then fed into compression boxes,AM/RF Gum Safer, at a rate of 9-15 crimps per inch (3-6 per cm).Retractable Muti-use Safer.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Mini Self Alarm Tag.Self Alarm Scream Tag.

Cutting

• 4 Following heat setting,Mini Wine Tag With Strap. 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)AM Jewelry Security Hang Tag Label.Customized Label, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Narrow AM Anti Theft Label Barcode.

The Future

Slim AM Anti Theft Label Multiple Colors,AM Anti Theft Label's fastest-growing fiber.AM Soft Labels. 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,Big Deep Low Laboratory Refrigerator, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Laboratory Tube Freezer. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Small Deep Low Laboratory Refrigerator, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.