Shrinkage Effects on Various Materials, Additives, and Processes in Injection Molding

Рет қаралды 4,602

Жыл бұрын

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

Пікірлер: 13

@DONLAD357 Жыл бұрын

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!

@rjg Жыл бұрын

We are so glad you found it helpful! Thanks for watching!

@IIIDAZZLERIII 7 ай бұрын

I recognise the 1ltr PET bottle 👌👌🤣 hope you're well

@jasoncox4328 Жыл бұрын

On some abs we use a foaming agent that helps with sinks, witch makes the path bigger.

@haymenms Жыл бұрын

Thank you sir!

@rjg 11 ай бұрын

You are welcome!

@zharaalipanahi8084 Жыл бұрын

Thanks 🙏🙏🙏🙏🙏

@outsiders3dprints722 Жыл бұрын

I'd love to have a tour around your work environment and station.

@rjg Жыл бұрын

Great idea! We will add it to our list of future videos. :)

@michaelburks7928 Жыл бұрын

I’m having trouble with splay on the corner of my part’s now, only coming every 4 to 5 parts

@DONLAD357 Жыл бұрын

Sounds like a venting issue to me, or excessive moisture in tool or material..

@dorsa9418 Жыл бұрын

I have question! How we should measure the initial shrinkage of plastic? Please help me

@rjg Жыл бұрын

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.