Method of fabricating processed food product containing protein

A method of fabricating a processed food product containing protein, the method comprising:

• moving a mixture in a tubular body, the mixture containing protein, lipid and water and having flowability, and the tubular body including a heating section and a non-heating section succeeding the heating section;
• and while moving the mixture, continuously heat-coagulating the mixture by an interior heating system and shaping the mixture, wherein the heating section is disposed to be horizontal or inclined by at most 300 relative to the horizontal, wherein the non-heating section includes a back pressure structure that produces back pressure inside the tubular body, and wherein the back pressure structure is formed as a high position portion at which at least a portion of the non-heating section is at a higher position in a vertical direction than an end point of the heating section.