-
Why should TPU resin be dried before processing?
Oct 14 , 2022
The linear TPU natural plastic molecule contains many strong polar groups (such as ester group, ether group, carbamate group, urea group, biuret group and allophanate group, etc.), The strong forces between the molecules of these groups and the hydrogen bonds form physical cross-links. TPU molecular structure determines that TPU plastic resin is easy to absorb moisture after be exposed in the air....
-
What is Expanded thermoplastic polyurethane (E-TPU)
Nov 11 , 2022
Expanded thermoplastic polyurethane (E-TPU)-is produced by the expansion of air in rubber material called TPU. TPU beads are pressure heated at 150℃ the temperature of softening point of TPU. CO2 blowing agent is impregnated into Soft Segment which results in expansion of TPU. In this process, the original particles can expand to 6-9 times bigger, and each of TPU (thermoplastic polyurethane materi...
-
What is shrinkage of plastics?
Mar 01 , 2023
The shrinkage of plastics is the volume contraction ratio of polymers from melt state to the cooled and rigid state. Most of the shrinkage occurs in the mold while cooling. A small amount of shrinkage occurs after injection as the molded part continues to cool. Total shrinkage is a result of molding shrinkage and post-shrinkage. The shrinkage of TPU plastic resin is ranged from 0.1% to 1%. The shr...
-
Techniques for processing TPU: injection molding, extrusion, calendering and blow molding
Mar 09 , 2023
Techniques for processing TPU: injection molding, extrusion, calendering and blow molding TPU can be processed by a variety of techniques including injection molding, extrusion, blow molding and calendering. Injection molding is by far the most important technique for processing TPU material. TPU are easily molded into shapes such as shoe sole, wheels, electronic parts, seals, toys, gaskets, ortho...
-
Blow grade TPU been used to produce auto suspension components, air sole, air bladder and blow film
Mar 17 , 2023
Blow grade TPU except for must with appropriate crystallization speed and appropriate melt index, another important requirement is the control of the fisheye on the blow product. Preventing TPU blow products from producing fisheye not only must control the blow molding processing, but also control the physical impurities and hyperpolymer during the process of TPU synthesis...
-
What is the most common type of resin used in the production of golf frisbee discs
Apr 07 , 2023
Golf frisbee is a game that combines the elements of golf and frisbee. The goal is to throw the frisbee from one tee box to another in as few throws as possible. The player with the lowest score at the end of the round wins. As Golf frisbee is an outdoor activities, so golf frisbee discs must be resistant to UV rays and withstand wear and tear from regular use. Plus the golf frisbee discs must als...
-
What is addition ratio of TPU material in agricultural film production and the effect of TPU to agricultural film
May 12 , 2023
Agricultural film is a type of plastic film used in agriculture for various purposes such as covering crops and protecting them from pests, weather, and UV radiation. The agricultural film is made in a single continuous process, where the plastic is melted and extruded through a die to form thin sheets. The sheets are then processed further to make the final TPU agricultural film. The composition ...
-
Why TPU been widely added to modify plastics
May 26 , 2023
Compound plastic are plastic materials that have been chemically or physically modified to improve their performance or characteristics. This can be achieved by adding additives such as fillers, stabilizers, plasticizers, or pigments to the plastic resin. The modification can also be done by incorporating a new compound or by blending two or more resins to produce a hybrid material with specific p...
-
What will the hardness of TPU influence the products and how to choose it
Jun 02 , 2023
It will leading to deformation or collapse of the product when the TPU material is too soft. It may become brittle and crack when the TPU material is too hard particularly for phone cases, watch bands or sport equipment products that require flexibility and durability. So, it is very important to choose appropriate hardness of TPU material. What will the hardness of TPU influence the products 1.Me...