how to design and manufacture polymeric shells to be inflated later

andradesilva · May 25, 2022

Hi,

I would like to design and manufacture a polymeric shell to be inflated. What would be the design considerations and how (by which method) can the shell be manufatured, as to be inflated later?

I thank you in advance,

Best regards,
AndradeSilva

the_gaffer · Aug 2, 2022

Andrade ... I am a ball engineer and am sure I can assist in some way. Not knowing your application, size, air retention requirements it is a shot in the dark. A simple solution is rotomolded PVC (like the light weight balls you can find at Walmart in the toy area). They are cheap and easy to make. You can also dip latex (like a high-end soccer bladder) or for better air retention you can cured NR / Butyl as are used in a variety of sports balls.

btrueblood · Aug 3, 2022

A lot of inflatables (toys, rafts) get made from edge-welded urethane- or vinyl-coated fabrics, or sheet vinyl.

3DDave · Aug 3, 2022

They can also be rotational molded or blow molded.

As to inflation?

https://youtu.be/mH712PaHlg8?t=205

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how to design and manufacture polymeric shells to be inflated later

andradesilva

Materials

the_gaffer

Mechanical

btrueblood

Mechanical

3DDave

Aerospace

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