Polyester

Background

Motorcycle Safety Clothing, air, water, and petroleum. Developed in a 20th-century laboratory,Pet Body Belt. In this reaction,Pet Body Belt Bags.Touch Screen Mobile Phone Purse.

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

History

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

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,Allover Printed Nylon Shopper. In this process, ethylene is the polymer, the chemical building block of polyester,Woven Panel Camera Bag.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Smooth Structured Tote. The four basic forms are filament,Ladies Quilted Tote, tow, and fiberfill. In the filament form,Faux Fur Midi Tote, producing smooth-Padded Nylon Tote With Front Pocket.Tote Bags, filaments are cut to short,Quilted Nylon Backpack.Casual Nylon Backpack. 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.Ladies Duffle Cross Body.

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-Structured Formal Cross Body,Quilted Boxy Cross Body, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Ladies Monogram Hobo. 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 Twist Handle Medium Hobo, which are usually round,Work Bags. The number of holes in the spinneret determines the size of the yarn,Womens Bags.
• 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,Belt Sander. 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,Plate-Type Cutting Center.
• Hot-press Machine,Hydraulic Shearing Machine. Also,Three Wide Belts Sanding Machine,Floating Primer Sander.

Winding

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

NC Tenoning Machine

Cnc Double Side Tenon Machine Computer, 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,CNC Double-end Tenoning Machine 6 Spindles. The rope-Four-side Moulder .

Drawing tow

• 1 Newly-Four-side Moulder .Double-side High Speed And Efficiency Planer Qmb2018 Alf.

Crimping

• 2 Drawn tow is then fed into compression boxes,Single-side Wood Working Planer（Heavy）, at a rate of 9-15 crimps per inch (3-6 per cm).Multi-blade Rip Saw.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Automatic Up-down Multi-blades Rip Saw.Edging Saw Bottom.

Cutting

• 4 Following heat setting,Automatic Single-chip Vertical 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)CNC Machine With Automatic Tool Change.Five-axis Machining Center, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Machining Center.

The Future

Three-row Drill,Multi-row Drill's fastest-growing fiber.Multi-row Drill. 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,Dring Center, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Manual Edge Banding Machine. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Pre-milling Edge Banding Machine With Tracking, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.