Length of feeding section is 0.5l, compression section is 0.3L, and metation section is 0.2l. Check Ring Shoulled Near Top of Scream Backflow and Maximum.

　　solidifying.

　　From an economic point of view, inject volume shopping be 40% to 80% of the rated volume. Scream 10 ~ 50r / min.

　　Pay Attention to Following Points in Mold Design:

　　78a and 90a, shrinkage of workpiece decreases with increasing thickness; when hardness is 95a to 74d, shrinkage of workpiece increases,

　　a faster fileing speake.

　　have a diameter of 8 ~ 10mm and a depth of about 6mm.

　　Right Angle to Mold Wall to Prevent Shinkage and Avoid Swirling.

　　Temperature Cause by Compression of Air, Internet Stress in Workpiece. Exhaust port can at the end flow in cavity or on mold parting surpace.

　　Care Must be taken to Control Mold Tempeature As Uniformly As Posses to Avoid Warpage and Distortion of Parts.

　　

　　

　　A. Barrel Temperature

　　is generally from size of hopper (rear end) to nozzle (front end), GraDually Increasing, so that testure of TPU Rises Smoolthly to the Achieve of Uniform Plasticization.

　　B. Nozzle Temperature

　　

　　C. MOLD TEMPERAN

　　Change in Performance.

　　Materials Mix Evenly, and Discharge Melt Gas, but it will propy molding cycle. Back Pressure of tpu isrsually 0.3 to 4MPa.

　　Hardness, The Greater Viscosity.

　　, And Back Pressure Should Be Below 1.4 MPA to Make TPU Plasticize Evenly.

　　cycle is generally between 20 ~ 60s.

　　Injecting Speed Mainly Depends on Configuration of TPU Product. Products with Thick End Faces Requction Speed, WHILE Thin End Faces Prive Faster Injection Spement Specture.

　　Processing TPU PRODUCTS usually requires a low shear rate, so a lower scream is appropriat. Scream of tpu is general 20 to 80 r / min, present 20 to 40 r / min.

　　

　　a hot air oven, taking care not to overheat locally and deferm product.

　　Must be sufficient time for it to sitarate and form micro-domains to obtate object.

　　It should be noted that TPU userd not contain lubricants.