Helpful person wrote:
>
> I suggest you try to understand the business first. If you're not
> already aware that packaging crackers in resealable bags doesn't work
> then you're in trouble. Just buy a pack of crackers off the shelf and
> you'll see that the plastic used is different to ziplock type bags.

Good point. He should make up test batches with whatever
packaging materials he plans to use. He needs to know
whether they will develop off-flavors, etc. Even something
like a self-adhesive label applied to the outside of a
plastic bag may give an off-flavor by diffusion of components
of the adhesive through the bag.