Polyester

Background

Cap Liner Machine For Add Gasket, air, water, and petroleum. Developed in a 20th-century laboratory,Plastic Cap Liner Machine. In this reaction,Bottle Cap Liner Machine.High Speed Cap Slitting Folding Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,38mm Mineral Water Cap Folding Slitting Machine, computer and recording tapes, and electrical insulation.Automatic Cap Slitting Folding Machine. It does not absorb moisture, but does absorb oil;Bottle Cap Slitting Folding Machine-, soil-, and fire-28MM Pet Preform Mould. Its low absorbency also makes it naturally resistant to stains.48MM Pet Preform Mould,30/25 PP Preform Mould.Cap Assembly Machine For Add Foam Liner, and not damaged by mildew.Cap Assembly Machine For Add Washers, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Flip Top Cap Assembly Machine-based E.I. du Pont de Nemours and Co.Push Pull Cap Assembly Machine. This early research, headed by W.H. Carothers,Sport Cap Assembly Machine, 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,Press Cap Assembly Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Plastic Cap Assembly Machine,Bottle Cap Assembly Machine. 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.Mineral Water Cap Slitting Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Medicine Cap Cutting Machine.

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,28mm Plastic Cap Slitting Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Bottle Cap Cutting Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Plastic Cap Printing Machine. The four basic forms are filament,Bottle Cap Printing Machine, tow, and fiberfill. In the filament form,Automatic Cap Lining Machine, producing smooth-Auto Cap Lining Machine.Bottle Cap Lining Machine, filaments are cut to short,Vibration Massage Gun.Fascia Massage Gun. 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.Handheld Massage Gun.

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-Foot Massager Spa Machine,Kneading Foot Massager, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Electric Hand Massager Tool. 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.Neck Massager, which are usually round,Air Pressure Eye Massager. The number of holes in the spinneret determines the size of the yarn,Electric Eye Massager.
• 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,Eye Massager With Heat. 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,Eye Massager For Dry Eyes.
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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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3D Massage Recliner Chair, 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,Heated 3D Massage Chair. The rope-3D Massage Recliner Kneading Chair.

Drawing tow

• 1 Newly-Free Installation 3D Massage Chair.Pu Leather 3D Massage Chair.

Crimping

• 2 Drawn tow is then fed into compression boxes,3D Back Massage Chair, at a rate of 9-15 crimps per inch (3-6 per cm).3D Massage Chair Mechanism.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)3D Office Massage Chair.Vibrating 3D Massage Chair.

Cutting

• 4 Following heat setting,Reflexology 3D massage chair. 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)Air Pressure 3D Massage Chair.3D L Track Massage Chair, such ascarpet,polyester filaments are cut into 6 inch (15 cm)3D Airbag Massage Chair.

The Future

Calf Kneading 3D Massage Chair,Percussion 3D Massage Chair's fastest-growing fiber.3D Full Body Massage Chair. 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,Zero Storage 3D Massage Chair, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,3D Massage Chair. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Full Body 2D Massage Chair, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.