Whether the material is wet: check whether there is obvious water and moisture phenomenon in the data. You can visually observe that there is no water and moisture phenomenon in the outer package. Open the material bag and touch the data to see if there is moisture. Difficult to dry.
2. Feeding link: Check the feeding link to ensure that the barrel mould and feeding process are clean to prevent foreign materials from mixing in and check the data particles for obvious bees.
3. Checking the drying equipment: Check the drying equipment to see if the heating temperature of the drying equipment is normal (there is a thermometer on the bottom of the barrel mould), whether the air blows in and out smoothly, and you can feel the wind out of the air outlet with your hand.
4. Is there a foaming phenomenon in the shot block? Exit the shot block to see if there is foaming in the block. There should be no foaming in the normal production materials. If there is foaming, there is gas. Continue to dry or lower the material. Tube temperature.
5. Check the nozzle heating ring and barrel mould: Check whether the nozzle heating ring and barrel mould are heated normally. The nozzle can be tested with a strip on it. The strip is normal if it melts. The temperature of the barrel mould can be viewed on the temperature screen, and the deviation from the set value cannot exceed 20 degrees.
6. Injection process: Check the key conditions that affect the silver pattern in the injection process. The loosening position should be as small as possible, the back pressure can be appropriately increased, and the injection speed can be increased and decreased in both directions.
7. Mold problem inspection: The inspection mold has no effects of oil leakage, air leakage, and water leakage.
Why Does Mold Grow on Plastic?
Many people believe that mold cannot grow on plastic or polymer materials. Mold generally can't break down plastic easily.
However, plastic contains many additives, such as plasticizers, cellulose, lubricants, stabilizers, and colorants to help provide desired features, and these additives ARE very easy for trash can mould to break down.
Once mold becomes established by breaking down the easily digested ingredients, the acids they produce as by-products of growth break down the resin into a more useable food source.
To learn more, read up on the ASTM G 21 test method that describes this process in greater detail.
What Does Mold Need to Grow on Plastic?
Mold is a broad term that covers a variety of species. Able to survive in the strangest of places, mold only has a few requirements to survive and thrive in any environment.
In addition to additives already embedded in the plastic itself, as mentioned above, food (dust, dirt, organic materials), moisture, and suitable temperature all provide enhanced conditions for mold growth to take hold.
While plastic might not be the preferred surface for sustaining mold growth, it can easily meet all the prerequisites if exposed to food, humidity, dirt, and dust.
These conditions vary widely between species. In fact, even the International Space Station (ISS) astronauts spend hours every week battling mold growth.
However, their fights have not gone unnoticed. Through their research, we have gained an indispensable look into the harsh environments of mold and its spores. The ISS scientists replicated the X-ray and UV exposure found around the space station and found spores surviving up to 100 gray worth of X-rays.
To put that in perspective, 5 gray is all that is needed to kill a person, while ? gray is enough to induce radiation sickness.
So, is mold the next Terminator T-1000? Well, not for us resourceful humans!
