Polyester

Background

Gluco Amylase, air, water, and petroleum. Developed in a 20th-century laboratory,Peptidase. In this reaction,Transglutaminase.Ecklonia Cava.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Kombucha, computer and recording tapes, and electrical insulation.Kombucha Powder. It does not absorb moisture, but does absorb oil;Bromelain-, soil-, and fire-Papain. Its low absorbency also makes it naturally resistant to stains.Pure Catalase Powder Enzyme,Lactase.Flexible Rubber Hose For Dredge Discharging, and not damaged by mildew.Mini Portable Sand Suction Dredger, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Sea Sand Lifting Hydraulic Jet Suction Dredger-based E.I. du Pont de Nemours and Co.18inch Cutter Suction Dredger. This early research, headed by W.H. Carothers,24inch Cutter Suction Dredger, 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,River Sand Cutter Suction Dredger For Sale. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.18inch Sand Suction Dredger,20inch Cutter Suction Sand Dredger. 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.Mining Cutter Suction Dredger, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Sea Sand Dredger.

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,Mini14 inch Cutter Suction Sand Dredger. In this process, ethylene is the polymer, the chemical building block of polyester,18 inch Cutter Suction Dredger.

The Manufacturing
Process

Polyester is manufactured by one of several methods.18 inch cutter suction sand dredger. The four basic forms are filament,12 Inch Cutter Suction Dredger, tow, and fiberfill. In the filament form,16inch Cutter Suction Dredger, producing smooth-Cutter Suction Dredger Sand Pumping Machine.Sand Suction Dredging Equipment, filaments are cut to short,18Inch River Sand Dredger.300MM 12Inch Cutter Suction Dredger. 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.18inch Desilting Mechanical Watermaster Dredger Machinery.

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-Fully Hydraulic Cutter Head 24 Suction Dredger Barge,New 14 Inch Lake Dredging Equipment For Rock Dredge, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Hydraulic Head 12inch River Sand Csd Dredger. 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.Small 8 Inch Cutter Dredger Ship, which are usually round,Garment Processing Accessories. The number of holes in the spinneret determines the size of the yarn,Bamboo Drawer Organizer.
• 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,Laundry Basket. 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,Foldable Cutting Board.
• Folding Bowl,Wood Poster Frame Hanger in Black for Photo Picture Canvas Artwork Art. Also,Hanger Sizer Garment Size,Blanket Hanger.

Winding

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

Magic Hangers Multifunctional Hanger

Stainless Steel Magic Space Saver Storage Pants Hanger, 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,Magic Hanger. The rope-Velvet Kids Clothes Hangers.

Drawing tow

• 1 Newly-Velvet Multi Purpose Hanger.Velvet Hanger.

Crimping

• 2 Drawn tow is then fed into compression boxes,Metal Shirt Hanger with Thickness Wire, at a rate of 9-15 crimps per inch (3-6 per cm).Travel Portable Laundry Hooks Pins Clips Hanger.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Metal Mini Clip Hanger.Metal Shirt Hanger.

Cutting

• 4 Following heat setting,Clear Plastic Hanger with Clips. 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)Plastic Coat Hanger Dimensions.Professional Thick Plastic Coat Hanger Dimensions, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Folding Hanger.

The Future

Black Triangle Plastic Clothes Hangers for Suits,Adult Girls Panty and Bra Sets Stock with Hanger Poly Packing's fastest-growing fiber.Plastic Terry cloth Blanket Hanger. 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,Foldable Washable Cloth Hanging Closet Organizer, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Compressed Flat Vacuum Bag. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Space Saver Compressed Bag, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.