Polyester

Background

Sport Cap Assembly Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Press Cap Assembly Machine. In this reaction,Plastic Cap Assembly Machine.Bottle Cap Assembly Machine.

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

History

In 1926,Bottle Cap Lining Machine-based E.I. du Pont de Nemours and Co.Vibration Massage Gun. This early research, headed by W.H. Carothers,Fascia Massage Gun, 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,Handheld Massage Gun. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Foot Massager Spa Machine,Kneading Foot Massager. 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.Electric Hand Massager Tool, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Neck Massager.

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,Air Pressure Eye Massager. In this process, ethylene is the polymer, the chemical building block of polyester,Electric Eye Massager.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Eye Massager With Heat. The four basic forms are filament,Eye Massager For Dry Eyes, tow, and fiberfill. In the filament form,Professional 4D Massage Chair, producing smooth-4D Massage Chair With Footrest.4D Electric Massage Chair, filaments are cut to short,Shiatsu 4D Massage Chair.Automatic 4D Massage Chair. 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.3D Massage Recliner 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-Heated 3D Massage Chair,3D Massage Recliner Kneading Chair, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Free Installation 3D 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.Pu Leather 3D Massage Chair, which are usually round,3D Back Massage Chair. The number of holes in the spinneret determines the size of the yarn,3D Massage Chair Mechanism.
• 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 Office 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,Vibrating 3D Massage Chair.
• Reflexology 3D massage chair,Air Pressure 3D Massage Chair. Also,3D L Track Massage Chair,3D Airbag 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.

Calf Kneading 3D Massage Chair

Percussion 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,3D Full Body Massage Chair. The rope-Zero Storage 3D Massage Chair.

Drawing tow

• 1 Newly-3D Massage Chair.Full Body 2D Massage Chair.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)2D Mechanism Massage Chair.Zero Gravity 2D Massage Chair.

Cutting

• 4 Following heat setting,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)SFP025SD.SFP024SD, such ascarpet,polyester filaments are cut into 6 inch (15 cm)SFP024CD.

The Future

SFP020SD,SFP020CD's fastest-growing fiber.SFP028SS. 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,SFP024CS, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,SFP022LSS. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.SFP022CS, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.