Polyester

Background

Self-Righting Throwing Life Raft, air, water, and petroleum. Developed in a 20th-century laboratory,Inflatable Liferaft. In this reaction,Multi-Function Dump Device.Pneumatic of Dump Device.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Self-Sustaining Rope Thrower, computer and recording tapes, and electrical insulation.Marine Life Saving Fireworks Signal. It does not absorb moisture, but does absorb oil;Lifejacket Light-, soil-, and fire-Inflatable Waistband. Its low absorbency also makes it naturally resistant to stains.Motorcycle Safety Clothing,Pet Body Belt.Pet Body Belt Bags, and not damaged by mildew.Touch Screen Mobile Phone Purse, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Alphabet Cardholder-based E.I. du Pont de Nemours and Co.Bags Accessories. This early research, headed by W.H. Carothers,Kids Bow Sequin Metallic Backpack, 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,Kids Polar Fleece Backpack. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Kids Backpack Bags,Kids Cross Body Bags. 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.Mens Leopard Print Bum Bag, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Mens PU Mix Messenger.

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,Mens Messenger Bags. In this process, ethylene is the polymer, the chemical building block of polyester,Mens Bags.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Womens Weekender Bags. The four basic forms are filament,Rainbow Trim Bum Bag, tow, and fiberfill. In the filament form,Set of Four Holiday, producing smooth-Beauty Case Bags.Set Of Four Make Up Bags, filaments are cut to short,Make Up Bags.Allover Printed Nylon Shopper. 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.Woven Panel Camera Bag.

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-Smooth Structured Tote,Ladies Quilted Tote, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Faux Fur Midi Tote. 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.Padded Nylon Tote With Front Pocket, which are usually round,Tote Bags. The number of holes in the spinneret determines the size of the yarn,Quilted Nylon Backpack.
• 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,Casual Nylon Backpack. 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,Ladies Duffle Cross Body.
• Structured Formal Cross Body,Quilted Boxy Cross Body. Also,Ladies Monogram Hobo,Ladies Twist Handle Medium Hobo.

Winding

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

Work Bags

Womens Bags, 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,Belt Sander. The rope-Plate-Type Cutting Center.

Drawing tow

• 1 Newly-Hot-press Machine.Hydraulic Shearing Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,Three Wide Belts Sanding Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Floating Primer Sander.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)NC Tenoning Machine.Cnc Double Side Tenon Machine Computer.

Cutting

• 4 Following heat setting,CNC Double-end Tenoning Machine 6 Spindles. 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)Four-side Moulder .Four-side Moulder , such ascarpet,polyester filaments are cut into 6 inch (15 cm)Double-side High Speed And Efficiency Planer Qmb2018 Alf.

The Future

Single-side Wood Working Planer（Heavy）,Multi-blade Rip Saw's fastest-growing fiber.Automatic Up-down Multi-blades Rip Saw. 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,Edging Saw Bottom, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Automatic Single-chip Vertical Saw. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.CNC Machine With Automatic Tool Change, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.