Polyester

Background

Kids Bow Sequin Metallic Backpack, air, water, and petroleum. Developed in a 20th-century laboratory,Kids Polar Fleece Backpack. In this reaction,Kids Backpack Bags.Kids Cross Body Bags.

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

History

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

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,Tote Bags. In this process, ethylene is the polymer, the chemical building block of polyester,Quilted Nylon Backpack.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Casual Nylon Backpack. The four basic forms are filament,Ladies Duffle Cross Body, tow, and fiberfill. In the filament form,Structured Formal Cross Body, producing smooth-Quilted Boxy Cross Body.Ladies Monogram Hobo, filaments are cut to short,Ladies Twist Handle Medium Hobo.Work Bags. 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.Womens 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-Belt Sander,Plate-Type Cutting Center, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Hot-press 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.Hydraulic Shearing Machine, which are usually round,Three Wide Belts Sanding Machine. The number of holes in the spinneret determines the size of the yarn,Floating Primer Sander.
• 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,NC Tenoning Machine. 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,Cnc Double Side Tenon Machine Computer.
• CNC Double-end Tenoning Machine 6 Spindles,Four-side Moulder . Also,Four-side Moulder ,Double-side High Speed And Efficiency Planer Qmb2018 Alf.

Winding

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

Single-side Wood Working Planer（Heavy）

Multi-blade Rip Saw, 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,Automatic Up-down Multi-blades Rip Saw. The rope-Edging Saw Bottom.

Drawing tow

• 1 Newly-Automatic Single-chip Vertical Saw.CNC Machine With Automatic Tool Change.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Three-row Drill.Multi-row Drill.

Cutting

• 4 Following heat setting,Multi-row Drill. 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)Dring Center.Manual Edge Banding Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Pre-milling Edge Banding Machine With Tracking.

The Future

Oxybenzenesulfonate Sodium,Eco Friendly Refrigerant Gas R508's fastest-growing fiber.99.9% Purity Refrigerant Gas R508b. 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,Refrigerant Gas R23, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Mixed Refrigerant Gas R507. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.99.9% Pure Gas Refrigerant Gas R507, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.