Paper bag learning is a comprehensive subject based on two points: First, the subject content is a comprehensive system. Oil-proof paper bag learning not only summarizes and transforms human's long-term paper bag practice knowledge, but also rises to rational knowledge, and more The relevant knowledge of the disciplines such as natural sciences, technical sciences, social sciences, humanities and art aesthetics is summarized and integrated into a subject framework. Its theories and methods are based on the theory and method of combining multiple disciplines. Secondly, when paper bag learning requires paper bag design and paper bag management work, the research and solution of the problem should be comprehensively analyzed and balanced. It is necessary to consider the technological advancement and the feasibility of the process. Pay attention to economic rationality. Therefore, we say that paper bag learning is a comprehensive subject.
The natural function of paper bags refers to those performance characteristics that can effectively protect the quality and quantity of products, provide a variety of conveniences for production, circulation and consumption, and bring material benefits to society.
The social function of paper bags refers to those performance characteristics that can satisfy people's psychological needs, promote the sale of goods, beautify the living environment, and bring spiritual benefits to the society.
The natural and social functions of the paper bag are unified in the paper bag product or the product paper bag object. The optimal combination of the two is the premise of achieving good economic and social benefits, and is the central content of paper bag research.