What is recycled polyester Features of recycled polyester?

What is recycled polyester? The characteristics of recycled polyester, recycled polyester is re-granulated with recycled materials (PET bottle flakes, foam materials, etc.), and then drawn into fibers. It is more environmentally friendly, but the strength and other properties of the fiber are worse than that of virgin polyester. The virgin polyester is polymerized and drawn into fibers with chemical raw materials PTA and MEG.

Recycled polyester staple fiber:

Recycled polyester staple fiber refers to the use of polyester fabric, waste polyester bottle flakes, spinning waste, foam material, pulp block as raw materials, waste bottle flakes are crushed and cleaned, and the mixture of various materials is dried, melted and extruded. Spinning, winding, bundling, drafting, crimping (adding different oils during crimping according to customer requirements), relaxation and heat setting, and cutting to form polyester staple fibers of different lengths.

Recycled polyester staple fiber:

The length is generally 32 to 102mm, and the fineness has many specifications from 1.5D to 20D. It belongs to the full use of renewable resources. It has a large market because of its low cost and good performance. There are many different varieties of recycled polyester staple fibers, such as ordinary fibers, hollow fibers, triangular fibers, flame-retardant fibers, etc., which are now generally used in the filler industry of furniture and toys, bedding, clothing industry, needle-punched cotton industry, stitch-bonding industry, etc. cloth industry.

The main test items for drying are moisture content, too high is not good for spinning, and it is easy to hydrolyze.

The semi-finished product mainly detects the viscosity of oil-free silk.

The main inspection items of finished products are fineness (dtex), unevenness of fineness, length (mm), unevenness of length, breaking strength (cN/dtex), unevenness of strength, unevenness of elongation, specific resistance (Ω·sink) cm), double-length fiber content (mg/100g), oil content, dry heat shrinkage at 180 degrees Celsius, crimp number, crimp degree, crimp elastic modulus, crimp recovery rate, bulkiness, etc.