Polyester

Background

Marine Life Saving Fireworks Signal, air, water, and petroleum. Developed in a 20th-century laboratory,Lifejacket Light. In this reaction,Inflatable Waistband.Motorcycle Safety Clothing.

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

History

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

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

The Manufacturing
Process

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

Drying

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

Winding

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

Hydraulic Shearing Machine

Three Wide Belts Sanding 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,Floating Primer Sander. The rope-NC Tenoning Machine.

Drawing tow

• 1 Newly-Cnc Double Side Tenon Machine Computer.CNC Double-end Tenoning Machine 6 Spindles.

Crimping

• 2 Drawn tow is then fed into compression boxes,Four-side Moulder , 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)Double-side High Speed And Efficiency Planer Qmb2018 Alf.Single-side Wood Working Planer（Heavy）.

Cutting

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

The Future

CNC Machine With Automatic Tool Change,Five-axis Machining Center's fastest-growing fiber.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,Three-row Drill, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Multi-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.