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Mushrooms, Mycology and Psychedelics > Advanced Mycology
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home made filter patch bags
    #628533 -

I'm trying to make autoclavable filter patch bags out of polyproplylene bags and Tyvek for filters. I have problems in applying filter to a bag. I can't do it with my impulse sealer and normal glue doesn't survive high temperatures...

Any ideas?

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Re: home made filter patch bags [Re: zeronio]
    #628619 -

try a soldering iron or heat gun.


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If I made affront, I apologize.
If I made affirmation, I apologize.
I merely came to listen, came to say.

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Re: home made filter patch bags [Re: zeronio]
    #628628 -

What about a high temp silicone?
-Bruiser


--------------------
-I put the chrome to your dome

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Re: home made filter patch bags [Re: zeronio]
    #628661 -

Try Stuffing the mouth of the bag with a big plug of polyfil fiber and then tighten it up with a drawstring.

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Re: home made filter patch bags [Re: zeronio]
    #628662 -

Try adhesive tape, there are some kind of tapes that survive high tems. I haven't tried them yet but i know they can because i've tried water proof banding aids with great success, they are cheap and they also serve the purpose of filtering air prety well, you can see some pics of those bags in the pic forum. Anyway, i know it's not your case, but i'm sure there are high temp resistant tapes, for example 3M have them for electronics, i have applied some and they work great.

Peace,
MAIA


--------------------
Spiritual being, living a human experience ... The Shroomery Mandala



Use, do not abuse; neither abstinence nor excess ever renders man happy.
Voltaire

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Re: home made filter patch bags [Re: MAIA]
    #628753 -

Una has an illustrated tek showing the use of polyfill. You need to find a ring of some sort (the illustration shows a section of a large syringe being used) to pull the polyfill through. You can get the stuff cheap and it would be much easier than attempting to melt on a crude filter - that's likely to end in contams.


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"A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism." - Carl Sagan

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Re: home made filter patch bags [Re: zeronio]
    #629557 -

Glue that is used to fix bongs-shaterred stem piece- sold at hobby shops should work.Cant remmember the name but its a type of apoxy. I believe there is also glue used on space ships sold at the hobby shop.

Good Luck- Little more trial & error -you will be all set


--------------------
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Preferably 18 to 21 years old.
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Please PM me with a current PIC!
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***FEMALES ONLY***

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Re: home made filter patch bags [Re: Angel_Magic79]
    #629804 -

Thanx for all the answers. I got a glue that is declared as heat tolerant (up to 120C). I will try it and let you know...

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Re: home made filter patch bags [Re: the spiral]
    #629808 -

I will try this also (polyfill with ring). I think plastic drain pipe (cheaper than big syringes) should be good enough for a ring...

However this PP bags with tyvek filters are really really cheap... I found a manufacturer that sells 1000 bags (40x30cm) for about 30$, not to mention tyvek (<2$/m2). Think about it - 1 bag should be less than 5c!

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Re: home made filter patch bags [Re: zeronio]
    #630167 -

>I think plastic drain pipe (cheaper than big syringes) should be good enough for a ring...

They will melt!!! Tried it, they shrink to 1/2"

Good luck



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"We are the one's we have been waiting for" - Hopi saying

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Re: home made filter patch bags [Re: zeronio]
    #630382 -

what supplier might this be?


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Vote Jonnyshaggs in the next election for GOD...Its the responsible choice

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Re: home made filter patch bags [Re: zeronio]
    #630549 -

zeronio, i'm not sure but you might be able to find polypropolyne tubing for a desent price at a good sized hardware store, should hold at up to 140f. worth a try atleast.


--------------------



Attn PWN hunters: If you should come across a bluing Psilocybe matching P. pellicolusa please smell it.
If you detect a scent reminiscent of Anethole (anise) please preserve a specimen or two for study and please PM me.

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Re: home made filter patch bags [Re: canid]
    #630976 -

In reply to:

zeronio, i'm not sure but you might be able to find polypropolyne tubing for a desent price at a good sized hardware store, should hold at up to 140f. worth a try atleast.


put a pc w/ 15 psi is 250 degree's F. spend a buck, and buy a syringe and save yourself the trouble


--------------------
ISO: Orissa, Malabar, z strain

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Re: home made filter patch bags [Re: jonnyshaggs420]
    #631055 -

> what supplier might this be?
It a local - not on the net. One guy with a bag making machine. I will ask him if he can stick those filters for me.

My experiment was only partially succesfull. Bag and filter survived sterilization but when I inocluated, sealed and tried to distribute spawn evenly the filter partially opened. I glued it back but I will probably get a bag full of contamn.
Still have a lot to learn.

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Re: home made filter patch bags [Re: zeronio]
    #633860 -

Edited by mndfreeze

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Re: home made filter patch bags [Re: zeronio]
    #634792 -

FYI... Try a lower tech approach to constructing your bags.
Rather than use tape, glue, or any other adhesive to attach
a filter patch, abandon the patch altogether and use polyfil
as a filter plugl. If you can't find polyfill sold separately, find
a pillow stuffed with polyfill.

With a hole punch, make a hole in your bag, take a decent
amount of polyfill (somewhat balled up) to force through the hole,
and pull through until tension on both sides of the bag is equal
(filter plug will not easily fall out from either side). Takes some practice,
but you will get the hang of it.



You can take simple packing tape (after autoclaving) and cover the
plug from the outside (while the bag is still warm) and perforate
the tape with a sterilized needle 20-40 times. This will allow air
exchange, but not too much.

As you can see from the pic above, it works just fine without
gluing or taping hassles. Good luck in your endeavors.

Peace to Everyone,

Peaceful_Nomad

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Re: home made filter patch bags [Re: ]
    #635098 -

dont know if this has anything to do with this post. but I sent in for a free sample of tyvek from a medical packaging company and they sent me back a huge folder of all types of different medical packaging, tons. I use the plain clear ones to seal up the dried mushrooms and I just seal it with an iron. some bags are polyethylene ,polypropylene etc. if you want the link PM me. heres a crappy pic of one of like 50 items i got lol




--------------------
goolag

[url=http://shroomery.org/faq/]Check out
the Shroomery FAQ[/url]

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Mushrooms, Mycology and Psychedelics > Advanced Mycology
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