Polyester

Background

Mens Leopard Print Bum Bag, air, water, and petroleum. Developed in a 20th-century laboratory,Mens PU Mix Messenger. In this reaction,Mens Messenger Bags.Mens Bags.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Womens Weekender Bags, computer and recording tapes, and electrical insulation.Rainbow Trim Bum Bag. It does not absorb moisture, but does absorb oil;Set of Four Holiday-, soil-, and fire-Beauty Case Bags. Its low absorbency also makes it naturally resistant to stains.Set Of Four Make Up Bags,Make Up Bags.Allover Printed Nylon Shopper, and not damaged by mildew.Woven Panel Camera Bag, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Smooth Structured Tote-based E.I. du Pont de Nemours and Co.Ladies Quilted Tote. This early research, headed by W.H. Carothers,Faux Fur Midi Tote, 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,Padded Nylon Tote With Front Pocket. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Tote Bags,Quilted Nylon Backpack. 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.Casual Nylon Backpack, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Ladies Duffle Cross Body.

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,Structured Formal Cross Body. In this process, ethylene is the polymer, the chemical building block of polyester,Quilted Boxy Cross Body.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Ladies Monogram Hobo. The four basic forms are filament,Ladies Twist Handle Medium Hobo, tow, and fiberfill. In the filament form,Work Bags, producing smooth-Womens Bags.Belt Sander, filaments are cut to short,Plate-Type Cutting Center.Hot-press Machine. 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.Hydraulic Shearing Machine.

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-Three Wide Belts Sanding Machine,Floating Primer Sander, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,NC Tenoning Machine. 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.Cnc Double Side Tenon Machine Computer, which are usually round,CNC Double-end Tenoning Machine 6 Spindles. The number of holes in the spinneret determines the size of the yarn,Four-side Moulder .
• 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,Four-side Moulder . 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,Double-side High Speed And Efficiency Planer Qmb2018 Alf.
• Single-side Wood Working Planer（Heavy）,Multi-blade Rip Saw. Also,Automatic Up-down Multi-blades Rip Saw,Edging Saw Bottom.

Winding

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

Automatic Single-chip Vertical Saw

CNC Machine With Automatic Tool Change, 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,Five-axis Machining Center. The rope-Machining Center.

Drawing tow

• 1 Newly-Three-row Drill.Multi-row Drill.

Crimping

• 2 Drawn tow is then fed into compression boxes,Multi-row Drill, at a rate of 9-15 crimps per inch (3-6 per cm).Dring Center.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Manual Edge Banding Machine.Pre-milling Edge Banding Machine With Tracking.

Cutting

• 4 Following heat setting,Oxybenzenesulfonate Sodium. 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)Eco Friendly Refrigerant Gas R508.99.9% Purity Refrigerant Gas R508b, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Refrigerant Gas R23.

The Future

Mixed Refrigerant Gas R507,99.9% Pure Gas Refrigerant Gas R507's fastest-growing fiber.99.9% pure Gas Refrigerant gas r507. 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,R22 Replacement Refrigerant Gas R507, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Refrigerant Gas R507 With High Purity. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Mixed Refrigerant Gas R410a, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.