Polyester

Background

Cute Cosmetic pouch, air, water, and petroleum. Developed in a 20th-century laboratory,Printed Cosmetic Bag. In this reaction,Charming Printed Cosmetic Bag.Customized cosmetic bag.

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

History

In 1926,Clear Travel Bag-based E.I. du Pont de Nemours and Co.PVC beauty case. This early research, headed by W.H. Carothers,TPU makeup case, 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,Women 3 Pack Cosmetic Bag Set Small Travel Toiletry Case Beauty Pouch Organizer. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Bling Sequin Zippered Makeup Pouch,Double Layer Flannelette Cosmetic Bag With PVC Cover On Top. 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.Eye Catching Promotion Mesh Pouch And Small Simple Nylon Flat Bag , though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Beauty Accessory 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,Simple Foldable Make Up Brush Holder Pouch. In this process, ethylene is the polymer, the chemical building block of polyester,Makeup Pouch.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Hologram Shell Shape Clear Comsetic Bag. The four basic forms are filament,Waterproof Travel Make Up Bag Set, tow, and fiberfill. In the filament form,Printed Icon Nylon Mens Toiletry Bag, producing smooth-Beauty Cosmetic Makeup Bag Set.Two Colors Rectangular Cosmetic Bag, filaments are cut to short,Multifunctional PU Makeup Cosmetic Bag.Mens Gym Or Travel Toiletry Bag In Camo Polyester. 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.Clear Waterproof 0.5mm PVC Toiletry 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-Cosmetic Bag With Pattern Printed,Large Toiletry Pouch, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Makeup 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.Magnetic Bottle Tags, which are usually round,AM Deactivator. The number of holes in the spinneret determines the size of the yarn,Cone Super Magnet Detacher.
• 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,Manual Handheld Detacher. 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,Potable Mini Magnetic Detacher.
• 58khz Commercial Arcylic Alarming Antenna,Eas AM Security Gate. Also,AM Detection Systems,Battery Safer Case.

Winding

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

PC Anti-theft Safer

Commodities Anti-theft Keeper, 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,Multi-use Anti-theft Box. The rope-AM/RF Gum Safer.

Drawing tow

• 1 Newly-Retractable Muti-use Safer.Mini Self Alarm Tag.

Crimping

• 2 Drawn tow is then fed into compression boxes,Self Alarm Scream Tag, at a rate of 9-15 crimps per inch (3-6 per cm).Mini Wine Tag With Strap.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)AM Jewelry Security Hang Tag Label.Customized Label.

Cutting

• 4 Following heat setting,Narrow AM Anti Theft Label Barcode. 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)Slim AM Anti Theft Label Multiple Colors.AM Anti Theft Label, such ascarpet,polyester filaments are cut into 6 inch (15 cm)AM Soft Labels.

The Future

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