We are not bound these laws because we are not clean by what we eat but made clean by God's grace given by the blood of Christ.
We have to read these passages within the context of the Acts of the Apostles. After Christ's return to Heaven, there were two opposing ideologies within the nascent Christian community. The first ideology of St. Peter purported that Christians should remain Jewish. They were to have a closer identity with the rules and regulations of the Old Law. The second ideology of St. Paul denounced the regulations of the Old Law as profiting one nothing. The passages in Acts 15 and Acts 16 appear to be instances of the first ideology of St. Peter, which disappeared quite early within Christian culture as Christianity became a hellenic religion rather than a strictly Jewish religion.Acts 15:28-29: "For it seemed good to the Holy Spirit, and to us, to lay upon you no greater burden than these necessary things: that you abstain...from blood..."