Polyester

Background

30/25 PP Preform Mould, air, water, and petroleum. Developed in a 20th-century laboratory,Cap Assembly Machine For Add Foam Liner. In this reaction,Cap Assembly Machine For Add Washers.Flip Top Cap Assembly Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Push Pull Cap Assembly Machine, computer and recording tapes, and electrical insulation.Sport Cap Assembly Machine. It does not absorb moisture, but does absorb oil;Press Cap Assembly Machine-, soil-, and fire-Plastic Cap Assembly Machine. Its low absorbency also makes it naturally resistant to stains.Bottle Cap Assembly Machine,Mineral Water Cap Slitting Machine.Medicine Cap Cutting Machine, and not damaged by mildew.28mm Plastic Cap Slitting Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Kneading Foot Massager. The four basic forms are filament,Electric Hand Massager Tool, tow, and fiberfill. In the filament form,Neck Massager, producing smooth-Air Pressure Eye Massager.Electric Eye Massager, filaments are cut to short,Eye Massager With Heat.Eye Massager For Dry Eyes. 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.Professional 4D Massage Chair.

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

Drying

• 3 After the polyester emerges from polymerization,Shiatsu 4D 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.Automatic 4D Massage Chair, which are usually round,3D Massage Recliner Chair. The number of holes in the spinneret determines the size of the yarn,Heated 3D 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,3D Massage Recliner Kneading 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,Free Installation 3D 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.

Vibrating 3D Massage Chair

Reflexology 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,Air Pressure 3D Massage Chair. The rope-3D L Track Massage Chair.

Drawing tow

• 1 Newly-3D Airbag Massage Chair.Calf Kneading 3D Massage Chair.

Crimping

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

Setting

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

Cutting

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

The Future

Zero Gravity 2D Massage Chair,Massage Chair's fastest-growing fiber.SFP025SD. 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,SFP024SD, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,SFP024CD. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.SFP020SD, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.