Polyester

Background

Cap Assembly Machine For Add Washers, air, water, and petroleum. Developed in a 20th-century laboratory,Flip Top Cap Assembly Machine. In this reaction,Push Pull Cap Assembly Machine.Sport Cap Assembly Machine.

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

History

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

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,3D Massage Recliner 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.Heated 3D Massage Chair, which are usually round,3D Massage Recliner Kneading Chair. The number of holes in the spinneret determines the size of the yarn,Free Installation 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,Pu Leather 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 Back Massage Chair.
• 3D Massage Chair Mechanism,3D Office Massage Chair. Also,Vibrating 3D Massage Chair,Reflexology 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.

Air Pressure 3D Massage Chair

3D L Track 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 Airbag Massage Chair. The rope-Calf Kneading 3D Massage Chair.

Drawing tow

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

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Full Body 2D Massage Chair.S Track 2D Massage Chair.

Cutting

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

The Future

SFP025SD,SFP024SD's fastest-growing fiber.SFP024CD. 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,SFP020SD, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,SFP020CD. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.SFP028SS, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.