I’m currently working on compostable paper pulp bowls and lids and need to figure out a way to close them tightly.
It will be used for salads and food so it needs to be tightly secured. We tried using tabs, inner lid, etc but the pulp to pulp connection don’t seem to work very well as the lid just pops out in transit or paper bag. We’re currently using PLA lid but we’re trying to get rid of it.
Is it also possible to add threads or twist lock on paper pulp? My guess is no but would be great to figure out some sort of secured lid.
Another option would be adding a sleeve, rubber band to secure the lid but it is not ideal as we’re trying to use the least amount of materials and have every packaging to be compostable.