Abstract
Corona discharge treatment was conducted to low density polyethylene (LDPE) sheet and polyethylene terephthalate (PET) film. LDPE sheet was laminated with PET film by using roll-laminating apparatus without using any adhesive. The adhesive strength was evaluated by carrying out peeling test. It was confirmed that the adhesive strength considerably changed depending on the laminating conditions. When the laminating experiment was carried out by covering the both sides of LDPE sheet and PET film with some kinds of films such as Teflon and PET , the adhesive strength reached around 2000N/m. This value was steeply higher than that, i.e., 1200N/m, obtained by using adhesive. Further, the adhesive strength could be maintained almost constant at least for one month.
