i think what the guy is asking is what in that plastic causes the counter intuitive reaction of shrinking under heat. As in most substances expand under heat.
Hello! Here are the steps the video follows: 1) A sheet of heat sensitive shrink film is folded over the product being wrapped 2) A heating system seals a joint lengthwise along the pack and simultaneously trims off excess film 3) A heated cutting blade seals the end of the package to complete the film bag 4) Once closed the film is moved into the shrink tunnel 5) The heat inside the Shrink Tunnel expands the air in the package while causing the film to tighten and constrict 6) Ventilation holes allow the trapped air to escape while the film constricts around the product If you have any further questions, please feel free to reach out at crawfordpackaging.com/contact
i think what the guy is asking is what in that plastic causes the counter intuitive reaction of shrinking under heat.
As in most substances expand under heat.
how does it work then?
Hello!
Here are the steps the video follows:
1) A sheet of heat sensitive shrink film is folded over the product being wrapped
2) A heating system seals a joint lengthwise along the pack and simultaneously trims off excess film
3) A heated cutting blade seals the end of the package to complete the film bag
4) Once closed the film is moved into the shrink tunnel
5) The heat inside the Shrink Tunnel expands the air in the package while causing the film to tighten and constrict
6) Ventilation holes allow the trapped air to escape while the film constricts around the product
If you have any further questions, please feel free to reach out at crawfordpackaging.com/contact