Polyester

Background

High Speed Cap Slitting Folding Machine, air, water, and petroleum. Developed in a 20th-century laboratory,38mm Mineral Water Cap Folding Slitting Machine. In this reaction,Automatic Cap Slitting Folding Machine.Bottle Cap Slitting Folding Machine.

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

History

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

The Manufacturing
Process

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

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-Neck Massager,Air Pressure Eye Massager, is extruded through a slot to form long ribbons.

Drying

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

Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

3D Massage Recliner Kneading Chair

Free Installation 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,Pu Leather 3D Massage Chair. The rope-3D Back Massage Chair.

Drawing tow

• 1 Newly-3D Massage Chair Mechanism.3D Office Massage Chair.

Crimping

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

Setting

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

Cutting

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

The Future

Zero Storage 3D Massage Chair,3D Massage Chair's fastest-growing fiber.Full Body 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,S Track 2D Massage Chair, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Intelligent Cloud 2D Massage Chair. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.2D Mechanism 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.