You stop into the local convenient store during your lunch hour and know you’re not going to be getting a home cooked meal. But you still want to be able to grab something fresh and delicious. After looking around for a few minutes, you find that you are surprised by how many things on the shelf actually look like they just might be pretty appetizing. So, you grab a sandwich and a soft drink and add them to your points calendar. When you open your sandwich to eat it, you are pleasantly surprised at how fresh it is. What you may not realize is that the freshness of your sandwich has a great deal to do with the food sealing machines that sealed not only your sandwich but most of the food in the store. Over the last 100 years, the food service industry has taken enormous strides in keeping food safe.