First, your request is less technical and more vendor services request. Engineers Edge will not allow vendors to post links, etc.
Second, during these times (pandemic) many organizations are operating minimally though contact is still very possible.
Depending on volume of these pancakes you need, it seems you could design a progressive (several stage) compression two-roller, adjustable machine to create the end item you need. A slicer would be easy enough.
Be aware that when you out-source this manufacturing that vendor will need to build a similar machine to supply you.
Also, have you verified that the hot melt adhesive is not already available in a film?