Q&A: Comprehensive Introduction to PETG Copolyester
Q1.What is PETG and how is it produced? A1: PETG is a thermoplastic material. PETG stands for Polyethylene Terephthalate Glycol-modified. It is a type of amorphous copolyester that belongs to the family of transparent plastics. PETG is synthesized through the copolymerization of three monomers: PETG is essentially PET modified with CHDM as a comonomer, which […]
Overview of Waste PET Recycling Methods and Market Treands
The increasing use of PET materials has led to a rise in PET waste, making efficient recycling solutions essential. Researchers have developed several methods to depolymerize, purify, and recover PET waste. PET recycling is broadly divided into physical and chemical methods. 1. Physical Recycling Physical recycling uses mechanical processes to melt and re-pelletize PET waste. […]
Development of Low Melting Point Polyester Chips by HanLink Polyester
Low melting point polyester is a modified polyester with a lower melting point. By adding modifying components during the regular PET polymerization process, we change its molecular structure. This reduces the polymer’s crystallization ability, lowering its melting point. Low melting point polyester can partly replace traditional adhesives. It is a green and eco-friendly product. It […]
The Application of Sodium Dimethyl 5-Sulfoisophthalate (SIPM) in Alkali-Soluble PET Chip
When it comes to cationic polyester chips, we focus on the dye uptake, which is influenced by the third monomer. The third monomer, SIPM, plays a key role in cationic polyester chips. SIPM not only enhances the dyeing properties of the polyester but also improves its moisture absorption and softness. Therefore, understanding the reaction rate […]
Factors Affecting Carboxyl End Groups in Textile-Grade Polyester Chips
An important influencing factor in textile-grade polyester chips is the carboxyl end group (-COOH). These groups form mainly during the esterification and polycondensation stages. Incomplete esterification reactions can leave carboxyl groups in the final product. Side reactions such as thermal degradation, thermo-oxidative degradation, and etherification in the polycondensation reaction will also produce carboxyl end groups. […]
Exploring Unsaturated Polyester Resin: Properties, Production, and Uses
Discover the versatility of unsaturated polyester resin (UPR) in various industries. This article explores UPR’s composition, production process, and applications, from corrosion-resistant coatings to foam materials. Delve into the world of UPR and uncover its essential role in modern manufacturing. 1. What is unsaturated polyester resin? Unsaturated polyester resin is a chemical raw material commonly […]
Polyester melting point and production process?
The melting point of polyester varies depending on the type of polyester and its production process. Low melting point polyester is a modified polyester with a lower melting point. It is a raw material for the production of thermal bonding fibers. Its melting point is 110~135℃. Low-melt fibers are used in edge linings for high-end […]
Important factors affecting the quality of PET bottle-level slices
PET is the most commonly used beverage packaging material today. Because PET can be easily made into finished products by rapid cooling. It is amorphous, has high transparency, and is easy to stretch. So, PET is usually used as packaging material. PET can be made into biaxially stretched packaging film (please check here for more […]
Film-grade PET chip indicators
The successful production of film-grade PET chips depends on several key factors. We will show you the difference in the manufacturing process, viscosity, melting point, DEG content, COOH content, and agglomerate particle size. Each indicator impacts the production of BOPET films. Production Process It adopts an external additive process. The additive content between batches should […]
Water resistance of PET chips
So, how can we enhance the water resistance of PET chips? Research has shown that a. appropriately increasing the viscosity of PET chips and increasing the polymerization of PET macromolecules help enhance the mechanical performance of the final PET film in humid and hot environments. b. reducing the COOH content of PET chips and maintaining the mass fraction of DEG at a stable level of (1.0 ± 0.2) %, along with adding an anti-hydrolysis agent such as carbon diimide or polydicyclopentadiene at a mass fraction of 0.1% to 1.5%, contributes to improving the water resistance of PET films.
