Polyester

Background

Sport Cap Assembling Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Bottle Cap Assembling Machine. In this reaction,Auto Cap Liner Machine.Aluminium Foil Cap Liner Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Easy Operation Cap liner Machine, computer and recording tapes, and electrical insulation.Cap Liner Machine For Add Gasket. It does not absorb moisture, but does absorb oil;Plastic Cap Liner Machine-, soil-, and fire-Bottle Cap Liner Machine. Its low absorbency also makes it naturally resistant to stains.High Speed Cap Slitting Folding Machine,38mm Mineral Water Cap Folding Slitting Machine.Automatic Cap Slitting Folding Machine, and not damaged by mildew.Bottle Cap Slitting Folding Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,28MM Pet Preform Mould-based E.I. du Pont de Nemours and Co.48MM Pet Preform Mould. This early research, headed by W.H. Carothers,30/25 PP Preform Mould, 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,Cap Assembly Machine For Add Foam Liner. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Cap Assembly Machine For Add Washers,Flip Top 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.Push Pull Cap Assembly Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Sport Cap Assembly 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,Press Cap Assembly Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Plastic Cap Assembly Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Bottle Cap Assembly Machine. The four basic forms are filament,Mineral Water Cap Slitting Machine, tow, and fiberfill. In the filament form,Medicine Cap Cutting Machine, producing smooth-28mm Plastic Cap Slitting Machine.Bottle Cap Cutting Machine, filaments are cut to short,Plastic Cap Printing Machine.Bottle Cap Printing Machine. 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.Automatic Cap Lining Machine.

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-Auto Cap Lining Machine,Bottle Cap Lining Machine, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Vibration Massage Gun. 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.Fascia Massage Gun, which are usually round,Handheld Massage Gun. The number of holes in the spinneret determines the size of the yarn,Foot Massager Spa Machine.
• 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,Kneading Foot Massager. 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,Electric Hand Massager Tool.
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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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Professional 4D Massage 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,4D Massage Chair With Footrest. The rope-4D Electric Massage Chair.

Drawing tow

• 1 Newly-Shiatsu 4D Massage Chair.Automatic 4D Massage Chair.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Pu Leather 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)3D Back Massage Chair.3D Massage Chair Mechanism, such ascarpet,polyester filaments are cut into 6 inch (15 cm)3D Office Massage Chair.

The Future

Vibrating 3D Massage Chair,Reflexology 3D massage chair's fastest-growing fiber.Air Pressure 3D 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,3D L Track Massage Chair, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,3D Airbag Massage Chair. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Calf Kneading 3D 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.