The Freeze Dryer in action

[Nonstopgp2]

What a waste NZ sucks at saving

[crackorjackzors]

Very venture bros sort of music to this video.

[maplestoryhack]

Poor mans way.

Stick it in a box and put it in your freezer for 5 days. Wa lah!

[idiotpolice50]

@maplestoryhack

Someone call me?

Well, then frozen water would still be in the documents right? What good is that? a freeze-"DRYER" freezes the water then evaporates it so that all moisture is removed.

Also, you said "Wa lah!" I suppose you meant to say "Voila" which is French for "There/here it is", though there are many other ways of using this word.

Good day.

[Thimmet]

Cool. The song is awesome too :)

[richmyork1]

Good lord how old is that freeze-dryer?

[NationalLibraryNZ]

@richmyork1

The freeze dryer dates from c. 1987

[agile52]

@NationalLibraryNZ I love operating old equipment like that, my shop had a hydraulic test stand from the 40s that took 2 people and 10 minutes to turn on and run

[thisisnotyours1]

is there limitation on the damaged condition of the paper that Freeze Dry system uable to recovered? Old damaged paper document can stick togather nearly perminent or over time it adhesive together. I'm curious. Can anyone answer? Thx.

[NationalLibraryNZ]

@thisisnotyours1

There are very few limitations regarding the level or amount of damage to items going into the vacuum freeze drier. The freeze drying process is, in a sense, very gentle. The water saturated books and archival materials are first frozen, and then go into the freeze drier as 'blocks' of frozen material which then stay within the machine on average from 3 to 5 days of continual process of very slowly 'drying out' the materials via slowly elevated temperatures within a vacuum.

[NationalLibraryNZ]

@thisisnotyours1

This in effect removes the wetness in the materials from a frozen state to a gaseous state, bypassing the liquid state. No further damage incurs to the material. If the books and archival materials had been notably damaged before they got water saturated they will come out of the freeze dryer at the same damage level as when they went in, only now they will be dry.

[NationalLibraryNZ]

@thisisnotyours1

One advantage of the freeze drier is that books printed on coated paper stock (art books or other heavily illustrated materials) can have their pages easily separated after undergoing freeze drying, which would not be the case should these same materials only be air dried. In the latter situation the fillers within the coated paper cause the pages to 'block' to one another upon drying and pages frequently cannot be separated when dry.

[joyisaware]

Truly Awesome

[juliamarystar]

I was thinking that you did recycling, but it is not. What can you do with used paper? You can protect your papers as historical documents lol :)

[nosharpe]

goggle freeze drying - you'd be surprised how clever it is

[edganchez]

idont know what the hell just happend.

[roshanunimrt]

the marvellous of physics!!!!!!!!!!!

Water properties.

[pwND001]

eh?

[Cassarndra1962]

Terrific!

[whaangha]

love it