Polyester

Background

Automatic Inflatable Life Jacket, air, water, and petroleum. Developed in a 20th-century laboratory,Accessories for inflatable lifejackets. In this reaction,Fishing boat immersion suit.Inclined Cradle.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Self-Righting Throwing Life Raft, computer and recording tapes, and electrical insulation.Inflatable Liferaft. It does not absorb moisture, but does absorb oil;Multi-Function Dump Device-, soil-, and fire-Pneumatic of Dump Device. Its low absorbency also makes it naturally resistant to stains.Self-Sustaining Rope Thrower,Marine Life Saving Fireworks Signal.Lifejacket Light, and not damaged by mildew.Inflatable Waistband, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Motorcycle Safety Clothing-based E.I. du Pont de Nemours and Co.Pet Body Belt. This early research, headed by W.H. Carothers,Pet Body Belt Bags, 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,Touch Screen Mobile Phone Purse. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Alphabet Cardholder,Bags Accessories. 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.Kids Bow Sequin Metallic Backpack, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Kids Polar Fleece Backpack.

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,Kids Backpack Bags. In this process, ethylene is the polymer, the chemical building block of polyester,Kids Cross Body Bags.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Mens Leopard Print Bum Bag. The four basic forms are filament,Mens PU Mix Messenger, tow, and fiberfill. In the filament form,Mens Messenger Bags, producing smooth-Mens Bags.Womens Weekender Bags, filaments are cut to short,Rainbow Trim Bum Bag.Set of Four Holiday. 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.Beauty Case Bags.

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-Set Of Four Make Up Bags,Make Up Bags, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Allover Printed Nylon Shopper. 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.Woven Panel Camera Bag, which are usually round,Smooth Structured Tote. The number of holes in the spinneret determines the size of the yarn,Ladies Quilted Tote.
• 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,Faux Fur Midi Tote. 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,Padded Nylon Tote With Front Pocket.
• Tote Bags,Quilted Nylon Backpack. Also,Casual Nylon Backpack,Ladies Duffle Cross Body.

Winding

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

Structured Formal Cross Body

Quilted Boxy Cross Body, 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,Ladies Monogram Hobo. The rope-Ladies Twist Handle Medium Hobo.

Drawing tow

• 1 Newly-Work Bags.Womens Bags.

Crimping

• 2 Drawn tow is then fed into compression boxes,Belt Sander, at a rate of 9-15 crimps per inch (3-6 per cm).Plate-Type Cutting Center.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Hot-press Machine.Hydraulic Shearing Machine.

Cutting

• 4 Following heat setting,Three Wide Belts Sanding Machine. 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)Floating Primer Sander.NC Tenoning Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Cnc Double Side Tenon Machine Computer.

The Future

CNC Double-end Tenoning Machine 6 Spindles,Four-side Moulder 's fastest-growing fiber.Four-side Moulder . 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,Double-side High Speed And Efficiency Planer Qmb2018 Alf, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Single-side Wood Working Planer（Heavy）. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Multi-blade Rip Saw, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.