Shrinkage Effects on Various Materials, Additives, and Processes in Injection Molding
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- čas přidán 27. 11. 2022
- Shrinkage can have different effects on injection molded parts depending on the type of materials and additives used and the processing strategy put into place. Here's an overview of some of those effects.
#moldsmart #rjg #injectionmolding #materials #plastic #processing #howto - Věda a technologie
Lots of useful info in this video! Thank you so much! I've been in Plastics for 17 years, and I never had this explained in this amount of detail!
We are so glad you found it helpful! Thanks for watching!
I recognise the 1ltr PET bottle 👌👌🤣 hope you're well
On some abs we use a foaming agent that helps with sinks, witch makes the path bigger.
Thanks 🙏🙏🙏🙏🙏
Thank you sir!
You are welcome!
I'd love to have a tour around your work environment and station.
Great idea! We will add it to our list of future videos. :)
I’m having trouble with splay on the corner of my part’s now, only coming every 4 to 5 parts
Sounds like a venting issue to me, or excessive moisture in tool or material..
I have question!
How we should measure the initial shrinkage of plastic? Please help me
Hello! The way that we do it is to measure the steel size of the cavity. For example, if have the steel size of the cavity which is 62.5mm x 49.5 mm, anything under this measurement is plastic shrinkage. We initially measure the parts immediately when they come off the machine and again 24 hours later to check total shrinkage. So looking at a sample part off the machine we measure a length of 61.30mm and width of 48.65mm, which calculates to a 1.92% shrinkage along the length and 1.71% on the width. After 24 hours the plastic has continued to shrink and the final shrinkage is 2.97% on the length and 2.34% along the width. Hopefully this answers your question.