How to control temperature of sporting goods blow molding machine

Sporting goodsAutomatic blow molding machineHow to control the temperature?

Empty in operationAutomatic blow molding machineWhen processing, we must pay attention to some temperature control to ensure that a suitable plastic bottle is manufactured.

(1) Melting temperature TM: For crystalline polymers, it refers to the temperature at which the three-dimensional remote ordered state of the macromolecular chain structure transforms into a disordered viscous fluid state, also known as the melting point. It is the lower limit of the crystalline polymer molding processing temperature.

(2) Glass transition temperature TG: refers to the transition temperature of an amorphous polymer (including the non-crystalline part in a crystalline polymer) from a glass state to a highly elastic state or from the latter to the former. It is the lowest temperature at which the macromolecular segment of the amorphous polymer can move freely, and it is also the upper limit of the working temperature of the product.> Aluminum plate spot welding machine

(3) No-flow temperature: the highest temperature at which no flow occurs under a certain pressure. It is to add a certain amount of plastic into the barrel at the upper end of the capillary rheometer die, and heat it to a certain temperature. After the constant temperature is known to be 10min, apply a constant pressure of 50MPA. If the material does not flow out of the die, set the temperature to Increase the difficulty by 10 degrees, apply the same constant pressure after holding for 10 MIN, and continue to do so until the melt flows out of the die. Decrease this temperature by 10 degrees to be the non-flowing temperature of the material.

(4) Flow temperature TF: refers to the temperature at which the amorphous polymer changes from a highly elastic state to a viscous flow state. It is the lower limit of the processing temperature of amorphous plastics.

(5) Decomposition temperature TD: When the temperature of a polymer in a viscous flow state is further increased, the degradation of the molecular chain will be aggravated, and the temperature at which the molecular chain of the polymer is significantly degraded is the decomposition temperature.