Polyester

Background

Automatic Cap Slitting Folding Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Bottle Cap Slitting Folding Machine. In this reaction,28MM Pet Preform Mould.48MM Pet Preform Mould.

Polyester is used in the manufacture of many products, including clothing, home furnishings,30/25 PP Preform Mould, computer and recording tapes, and electrical insulation.Cap Assembly Machine For Add Foam Liner. It does not absorb moisture, but does absorb oil;Cap Assembly Machine For Add Washers-, soil-, and fire-Flip Top Cap Assembly Machine. Its low absorbency also makes it naturally resistant to stains.Push Pull Cap Assembly Machine,Sport Cap Assembly Machine.Press Cap Assembly Machine, and not damaged by mildew.Plastic Cap Assembly Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Bottle Cap Assembly Machine-based E.I. du Pont de Nemours and Co.Mineral Water Cap Slitting Machine. This early research, headed by W.H. Carothers,Medicine Cap Cutting 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 1946,28mm Plastic Cap Slitting Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Bottle Cap Cutting Machine,Plastic Cap Printing 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.Bottle Cap Printing Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Automatic Cap Lining 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,Auto Cap Lining Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Bottle Cap Lining Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Vibration Massage Gun. The four basic forms are filament,Fascia Massage Gun, tow, and fiberfill. In the filament form,Handheld Massage Gun, producing smooth-Foot Massager Spa Machine.Kneading Foot Massager, filaments are cut to short,Electric Hand Massager Tool.Neck Massager. 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.Air Pressure Eye Massager.

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-Electric Eye Massager,Eye Massager With Heat, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Eye Massager For Dry Eyes. 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.Professional 4D Massage Chair, which are usually round,4D Massage Chair With Footrest. The number of holes in the spinneret determines the size of the yarn,4D Electric Massage Chair.
• 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,Shiatsu 4D Massage Chair. 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,Automatic 4D Massage Chair.
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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 Back 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,3D Massage Chair Mechanism. The rope-3D Office Massage Chair.

Drawing tow

• 1 Newly-Vibrating 3D Massage Chair.Reflexology 3D massage chair.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Percussion 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 Full Body Massage Chair.Zero Storage 3D Massage Chair, such ascarpet,polyester filaments are cut into 6 inch (15 cm)3D Massage Chair.

The Future

Full Body 2D Massage Chair,S Track 2D Massage Chair's fastest-growing fiber.Intelligent Cloud 2D 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,2D Mechanism Massage Chair, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Zero Gravity 2D Massage Chair. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.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.