Plastics that dissolves in water?
Plastics that dissolves in water?
(OP)
Hi,
Thanks for reading this!
I have discovered that PVA (polyvinyl alcohol) is a form of plastic (more like a film form) that dissolves in water depending on the temperature and the PVA concentration, it is often use in the fishing accessories to packaging and washing powder etc. I wonder if there's other plastics that also dissolves in the water but can be produce in the injection moulding or a form of vaccum casting?
PVA tend to have a very narrow thermal window gap so it cannot be produced in the injection moulding as the molten PVA will contact the cold surface die tool and solidfies quickly before it started to move and fill the mould cavity within making itself very vicsious. I wonder if there's such water soluble plastics that has got a good brittle resistant strength and compressing strength.
It is interesting to hear from everyone's shares and experiences!
Thanks for reading this!
I have discovered that PVA (polyvinyl alcohol) is a form of plastic (more like a film form) that dissolves in water depending on the temperature and the PVA concentration, it is often use in the fishing accessories to packaging and washing powder etc. I wonder if there's other plastics that also dissolves in the water but can be produce in the injection moulding or a form of vaccum casting?
PVA tend to have a very narrow thermal window gap so it cannot be produced in the injection moulding as the molten PVA will contact the cold surface die tool and solidfies quickly before it started to move and fill the mould cavity within making itself very vicsious. I wonder if there's such water soluble plastics that has got a good brittle resistant strength and compressing strength.
It is interesting to hear from everyone's shares and experiences!






RE: Plastics that dissolves in water?
Chris DeArmitt - PhD FRSC
Plastics & Materials Consulting
www.phantomplastics.com
Plastic Training Seminars
www.plastictraining.com
RE: Plastics that dissolves in water?
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Plastics that dissolves in water?
Paul Kuklych
http://www.improve-your-injection-molding.com
RE: Plastics that dissolves in water?
Chris DeArmitt - PhD FRSC
Plastics & Materials Consulting
www.phantomplastics.com
Plastic Training Seminars
www.plastictraining.com
RE: Plastics that dissolves in water?
Hope this helps.
Paul Kuklych
http://www.improve-your-injection-molding.com
RE: Plastics that dissolves in water?
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Chris DeArmitt - PhD FRSC
Plastics & Materials Consulting
www.phantomplastics.com
Plastic Training Seminars
www.plastictraining.com
RE: Plastics that dissolves in water?
I think PEG is water soluble, but no idea if mouldable.
Most waxes will melt in hot water, as will some metal alloys.
Application would be useful to know.
www.tynevalleyplastics.co.uk
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