The phrase "is placed into" is correct and usable in written English.
It is used when describing the action of something being put into another object/place. For example,"The ball is placed into the bucket".
The thought is placed into the box for safekeeping.
The upholstery is placed into a mold and then filled with foam for a perfect finish.
This is placed into a vial containing a liquid, which washes the sample into solution.
Each die that passes testing is placed into a hard plastic package.
The artificial valve, which has a special sealing cuff, is placed into position with a catheter.
Its full implications emerge only when the work is placed into the life of the author.
Saw a Woman in Half A woman is placed into a rectangular box, which is then shut.
Its creation involves a wet slurry powder that is placed into a pastalike machine and cut into small strips.
In the ceremony a large pole, decorated with flowers and leaves, is placed into the ground and danced around.
Then the enucleated cell, with the transplanted chromosome, is placed into a recipient female to be carried through gestation.
After transmission, the coordinate is placed into the decoder map.
