What is the difference between RPET fabric and ordinary polyester fabric?

The difference between RPET fabric and ordinary polyester fabric is simply the fabric yarn The sources are different.

Recycled PET fabric

RPET fabric is a new type of environmentally friendly recycled fabric. It is called Recycled PET Fabric in English, also known as recycled PET fabric. Its yarn is extracted from recycled mineral water bottles and Coke bottles, also commonly known as Environmentally friendly cloth for Coke bottles

Because it is a new type of green recycled environmentally friendly fabric, its source is low-carbon, in order to save petroleum resources and protect the ecology It has made a huge contribution to the environment, so it is very popular abroad, especially in developed countries in Europe and the United States. It is widely used in tank tops, shirts, skirts, children’s clothing, silk scarves, cheongsams, ties, handkerchiefs, home textiles, curtains, pajamas, bows, and gift bags. , sleeves, fashionable umbrellas, pillowcases, pillows, etc.

Ordinary polyester fabric

As we all know, the yarn of ordinary polyester fabrics is extracted from petroleum

Ordinary polyester fabric: that is, ordinary polyester (POLY), its chemical The name is polyethylene terephthalate (PET). Its tensile breaking strength and tensile elongation at break are higher than cotton fiber, and it has good heat resistance and thermal stability due to its many excellent properties. , it is widely used in clothing, home textiles, decoration, and industrial supplies. It has rapid development and high output, and is known as the “Crown of Chemical Fibers”

The difference between recycled polyester and ordinary polyester

Performance is different

1. The strength and other properties of recycled polyester fiber are poor.

2. The strength and other properties of polyester fiber are relatively good.

Materials vary

1. Recycled polyester is made of recycled materials (PET bottle flakes , foam, etc.) are then granulated and then drawn into fibers.

2. Polyester is made of chemical raw materials PTA and MEG, which are polymerized, esterified and drawn into fibers.

Polyester yarn refers to yarn spun from polyester. Polyester is a type of fiber made by spinning polymers. Currently, many Refers to the fiber produced with ethylene terephthalate as raw material. According to the abbreviation of the English name of its raw material “polyethylene terephthalate”, it is referred to as “PET” fiber. Commonly known as polyester in our country.

Recycled polyester staple fiber is made of polyester fabrics, waste polyester bottle flakes, spinning waste silk, foam materials, pulp blocks, and waste bottle flakes After crushing and cleaning, the mixture of various materials undergoes drying, melt extrusion, spinning, winding, bundling, drafting, curling, relaxation and heat setting, and is cut to form polyester staple fibers of different lengths.

Compare the two Below: Environmentally friendly polyester not only has the advantages of ordinary polyester, but also tends to be green and environmentally friendly.

Characteristics of polyester

1. High strength and toughness. The strength of short fiber is 2.6~5.7cN/dtex, and the strength of high-strength fiber is 5.6~8.0cN/dtex.

Due to low hygroscopicity , its wet strength is basically the same as its dry strength, and its impact resistance is 4 times higher than nylon and 20 times higher than viscose fiber.

2. Good elasticity. The elasticity is close to that of wool. When stretched by 5% to 6%, it can almost completely recover. The wrinkle resistance is better than other fibers, that is, the fabric does not wrinkle and has good dimensional stability. Polyester fabric has high strength and elastic recovery ability. , therefore, it is durable, wrinkle-resistant and non-ironing

3. Heat-resistant polyester is made by melt spinning method, and the formed fiber can be re-spun. After being heated and melted, it is a thermoplastic fiber.

The melting point of polyester is relatively high, but the specific heat capacity and thermal conductivity are small, so the heat resistance and thermal insulation of polyester fiber are higher. It is the best among synthetic fibers.

4. Good thermoplasticity but poor melt resistance. Due to the smooth surface of polyester and the tight arrangement of internal molecules, polyester is the most heat-resistant fabric among synthetic fabrics. It is thermoplastic and can be made into pleated skirts with long-lasting pleats.

At the same time, polyester fabric has poor melt resistance and can easily form holes when exposed to soot, sparks, etc. Therefore, you should try to avoid contact with cigarette butts, sparks, etc. when wearing it.

5. Good wear resistance. The wear resistance is second only to nylon, which has the best wear resistance, and is better than other natural fibers and synthetic fibers.

6. Good light fastness. The light fastness is second only to acrylic fiber. Polyester fabric has better light fastness. In addition to being worse than acrylic fiber, its light fastness is better than natural fiber fabric. Especially in The light resistance behind the glass is very good, almost as good as acrylic.

7. Corrosion resistance. Resistant to bleach, oxidants, hydrocarbons, ketones, petroleum products and inorganic acids.

Resistant to dilute alkali and not afraid of mold, but hot alkali can cause it to decompose. It also has strong acid and alkali resistance and UV resistance.

8. The dyeability is poor, but the color fastness is good and it is not easy to fade. Because there are no specific dyeing groups on the polyester molecular chain and the polarity is small, it is difficult to dye, the dyeability is poor, and the dye molecules cannot easily enter the fiber.

9. It has poor hygroscopicity and feels stuffy when worn. It is also prone to static electricity and dust contamination, which affects the appearance and comfort.

However, it is very easy to dry after washing, and its wet strength hardly decreases, it does not deform, and it has good washable and wearable properties.