whats the melting temperature of ziploc
 

would a ziploc bag melt around 100-120C ?? or would it keep its form ? like without getting wrinkly etc ?

although Polypropylene´s melting temp lies around 160°c, it does becomes rather unstable at ~ 100-110°c

According to this

http://en.wikipedia.org/wiki/Ziploc

The regulation Ziploc storage and freezer bag is made from polyethylene plastic resin, the most commercially used polymer that is available in a large range of flexibilities and densities, allowing Ziploc bags to safely hold and store various amounts and densities of foods. Looks like the storage containers are polypropylene, and the bags are polyethylene.

http://en.wikipedia.org/wiki/Polyethylene

For common commercial grades of medium- and high-density polyethylene the melting point is typically in the range 120 to 130 °C (250 to 265 °F). The melting point for average, commercial, low-density polyethylene is typically 105 to 115 °C (220 to 240 °F).

the reason why i was wondering that is ..

i was watching this show, which was about measuring the distance between the moon and earth, and newtons laws were just an approximation bla bla bla..


so to prove newtons laws weren't really correct this nasa guy was showing this reflector placed on the moon surface, and he was telling how they bounce the laser light back and forth. and he made a joke about, oh and here is the ziploc bag astranaouts left because there was no littering restriction once they were there.

http://img269.imageshack.us/img269/9533/apollolaser.jpg


now don't get me wrong this has nothing to do with conspiracy theory stuff. and i don't think any government would fake such thing.

my question is why ziplock ? why would you take stuff there that has the risk of melting and losing its form on such an environment.

like, of course it wouldn't catch flames as there is no oxygen to oxidize things. but it definitely would lose its form, get wrinkly or even worse rip or ruin scientific instruments.

moons temperature is (from what i read) around 110-130C degrees daytime and -150 to -233 night time. and even hubble space telescope has thermal blankets etc all around it to protect the lenses and other instruments (even tho lenses have much higher melting point).

seriously tho these guys back then had the ba***..

no one can strap me in the biggest rocket ever built. that has been tested maybe once before .. and say

oh hey neil ... btw .. put ur instruments in this ziploc .. we just thought at flight control that would be more tidy in here and wont fly around...


if i were neil .. i would be like .. "robert you embesil this is a ziploc. "


man can't believe things they did to cut corners to win against russians..

Just because they called it a "Ziploc" bag doesn't mean it's made of the same material a Ziploc bag you'd buy from Sainsbury's would be made out of.

Yeah. It's probably a space-age ziploc designed for the astronauts.

i've been going thru tons of different types of plastic and could only find one type that is suitable (probably there is a few more). for space/vacuum use.

its PEEK

on the other hand i don't know when this type of plastic (clear) was developed.

most of the clear plastics have a melting point close to the temperature of the surface of moon. 140-160C degrees.

on the other hand nasa really uses ziploc brand double seal bags to send food to space (but they don't leave the space station or shuttle during the travel).