Polyester

Background

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Polyester is used in the manufacture of many products, including clothing, home furnishings,Flip Top Cap Assembly Machine, computer and recording tapes, and electrical insulation.Push Pull Cap Assembly Machine. It does not absorb moisture, but does absorb oil;Sport Cap Assembly Machine-, soil-, and fire-Press Cap Assembly Machine. Its low absorbency also makes it naturally resistant to stains.Plastic Cap Assembly Machine,Bottle Cap Assembly Machine.Mineral Water Cap Slitting Machine, and not damaged by mildew.Medicine Cap Cutting Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,28mm Plastic Cap Slitting Machine-based E.I. du Pont de Nemours and Co.Bottle Cap Cutting Machine. This early research, headed by W.H. Carothers,Plastic Cap Printing 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,Bottle Cap Printing Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Automatic Cap Lining Machine,Auto Cap Lining 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 Lining Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Vibration Massage Gun.

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,Fascia Massage Gun. In this process, ethylene is the polymer, the chemical building block of polyester,Handheld Massage Gun.

The Manufacturing
Process

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

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-Professional 4D Massage Chair,4D Massage Chair With Footrest, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,4D Electric Massage Chair. 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.Shiatsu 4D Massage Chair, which are usually round,Automatic 4D Massage Chair. The number of holes in the spinneret determines the size of the yarn,3D Massage Recliner 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,Heated 3D 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,3D Massage Recliner Kneading 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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Vibrating 3D 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,Reflexology 3D massage chair. The rope-Air Pressure 3D Massage Chair.

Drawing tow

• 1 Newly-3D L Track Massage Chair.3D Airbag Massage Chair.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,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)Full Body 2D Massage Chair.S Track 2D Massage Chair, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Intelligent Cloud 2D Massage Chair.

The Future

2D Mechanism Massage Chair,Zero Gravity 2D Massage Chair's fastest-growing fiber.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,SFP025SD, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,SFP024SD. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.SFP024CD, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.