How to properly adapt academic papers obtained from a university to private companies?
Here is how it used to work:

The university bought journal articles from a publisher.

The publisher printed and mailed the article to the university.

Any random person could walk into the university library and read the article.

The random person could use what they learned to make money, so long as they did not violate any patents.  The patents issue is
unrelated to the copyright on the article.


In my opinion, using your student account to access electronic journal articles through a university subscription and then using what you have learned to make money is ethically equivalent to the steps listed above, which have always been ethically acceptable.  As a student, you should be encouraged to learn as much as possible, even if that learning is not related to your degree program.
However, legally you must follow your university's policies.  We do not know what those policies are.  They may impose some limits on the purposes for which you can use the university's resources.
Do not consume university resources for the profit of a private business.  Reading a journal article is not consumption.