Injection molding TPU long glass fiber TPU reinforced thermoplastic urethanes The most suitable processing method of TPU is screw injection molding machine. With a single screw of normal length, a three-stage screw can produce a lot of good plasticized uniform melt. If high plasticizing capacity (production capacity) is required, a longer screw can be used. Injection molding TPU long glass fiber T...

TPU polyurethane elastomer injection molding Injection The most suitable processing method of TPU is screw injection molding machine. With a single thread of normal length, the three-section screw can produce a well-plasticized uniform melt. If high plasticizing capacity is required, TPU LONG GLASS FIBER REINFOCED THERMOPLASTIC requires the use of longer screws. Screws in the short compression zon...

Introducation LFT-G is the product name for long fiber reinforced thermoplastic materials for injection moldings,compression molding and extrusion.Retention of fiber length in the finished part is key to the performance .Fiber length is retained by proper use of free flowing check valves,metering screws and a complete evaluation of the mold to reduce high shear and allow the materials to fill the ...

Compared with other nylons, PA12 long carbon fiber composite material has low density, good low temperature resistance and wear resistance, has a certain degree of self-lubrication, and its water absorption rate is lower than other nylons. The resistance to stress cracking is better than PA6 and PA66, and it has excellent resistance to alkali, oil and grease. PA12 resin has high crystallinity, low...

(1) Improper control of molding conditions If the injection pressure is too low, the injection and holding time is too short, the injection speed is too slow, the material temperature and mold temperature are too high, the cooling of the plastic part is insufficient, the temperature is too high during demolding, the temperature around the insert is too low, or there is insufficient material supply...

(1) P: Poor flow of the molten material leads to the formation of concentric flow marks resembling growth rings on the surface of injection-molded parts, centered around the gate. When low-temperature, high-viscosity molten material with poor flow performance is injected into the cavity in a semi-cured, fluctuating state through the injection port and runner, the material flows along the cavity su...

Mold temperature too low Cause: If the mold temperature is too low, the melt cools too quickly during flow, causing the glass fibers to not be fully encapsulated by the base resin and float to the surface. Solution: Increase the mold temperature appropriately to ensure the melt has sufficient fluidity to uniformly coat the glass fibers. Regularly check the mold temperature control system to ensure...

Mold temperature too low Cause: The low mold temperature causes the molten plastic to cool too quickly in the runner, preventing full fusion. Solution: Increase the mold temperature to ensure the molten plastic flows smoothly and fuses completely. Injection speed too slow Cause: Slow injection speed causes the plastic to flow slowly, extending cooling time and forming weld lines. Solution: Increas...

In injection molding design, in addition to general mold design considerations, the following aspects should be given special attention: 1. To achieve the desired product dimensional tolerance, appropriate mold dimensional tolerances must be considered. 2. Preventing fluctuations in molding shrinkage rates should be accounted for. 3. Preventing molding deformation must be addressed. 4. Avoiding de...

1. Production Workshop The layout of the production workshop should consider two main aspects: meeting production requirements and optimizing layout based on production flow, while ensuring flexible energy use under specific production conditions. (1) Power Supply: Ensure a stable power supply with a moderate buffer to avoid excessive energy waste from unused capacity. (2) Efficient Cooling Water ...

Injection Mold 1. If the mold cavity is poorly machined, with defects such as scratches, micro-pores, wear, or rough surfaces, it will affect the gloss of the plastic part. To address this, ensure precise machining of the mold to achieve a lower surface roughness for the cavity; if necessary, polish and chrome-plate the cavity. 2. If the cavity surface has oil stains, watermarks, or excessive mold...