Polyester

Background

Self-Sustaining Rope Thrower, air, water, and petroleum. Developed in a 20th-century laboratory,Marine Life Saving Fireworks Signal. In this reaction,Lifejacket Light.Inflatable Waistband.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Motorcycle Safety Clothing, computer and recording tapes, and electrical insulation.Pet Body Belt. It does not absorb moisture, but does absorb oil;Pet Body Belt Bags-, soil-, and fire-Touch Screen Mobile Phone Purse. Its low absorbency also makes it naturally resistant to stains.Alphabet Cardholder,Bags Accessories.Kids Bow Sequin Metallic Backpack, and not damaged by mildew.Kids Polar Fleece Backpack, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

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,Set of Four Holiday. In this process, ethylene is the polymer, the chemical building block of polyester,Beauty Case Bags.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Set Of Four Make Up Bags. The four basic forms are filament,Make Up Bags, tow, and fiberfill. In the filament form,Allover Printed Nylon Shopper, producing smooth-Woven Panel Camera Bag.Smooth Structured Tote, filaments are cut to short,Ladies Quilted Tote.Faux Fur Midi Tote. 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.Padded Nylon Tote With Front Pocket.

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-Tote Bags,Quilted Nylon Backpack, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Casual Nylon Backpack. 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.Ladies Duffle Cross Body, which are usually round,Structured Formal Cross Body. The number of holes in the spinneret determines the size of the yarn,Quilted Boxy Cross Body.
• 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,Ladies Monogram Hobo. 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 Twist Handle Medium Hobo.
• Work Bags,Womens Bags. Also,Belt Sander,Plate-Type Cutting Center.

Winding

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

Hot-press Machine

Hydraulic Shearing Machine, 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,Three Wide Belts Sanding Machine. The rope-Floating Primer Sander.

Drawing tow

• 1 Newly-NC Tenoning Machine.Cnc Double Side Tenon Machine Computer.

Crimping

• 2 Drawn tow is then fed into compression boxes,CNC Double-end Tenoning Machine 6 Spindles, at a rate of 9-15 crimps per inch (3-6 per cm).Four-side Moulder .

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Four-side Moulder .Double-side High Speed And Efficiency Planer Qmb2018 Alf.

Cutting

• 4 Following heat setting,Single-side Wood Working Planer（Heavy）. 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)Multi-blade Rip Saw.Automatic Up-down Multi-blades Rip Saw, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Edging Saw Bottom.

The Future

Automatic Single-chip Vertical Saw,CNC Machine With Automatic Tool Change's fastest-growing fiber.Five-axis Machining Center. 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,Machining Center, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Three-row Drill. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Multi-row Drill, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.