| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that a laminated sheet obtained by laminating a resin film having apertures on the surface of a liquid absorbing layer is used as a liquid absorbing sheet laid on a food tray to absorb the drip from perishable foods but, if the amount of a surfactant is reduced or made zero in order to enhance the water repellency of the surface of the resin film, the resin film is easy to become electrostatically chargeable to easily adhere dust or the like. SOLUTION: The surface of the liquid permeable layer 4 of a perforated film is made water repellent to set the contact angle of a physiological saline solution to 35 deg. or more. The liquid absorbing layer 3 having charging properties lower than those of the liquid permeable layer 4 is used to make it possible to suppress the charging of the liquid permeable layer 4. Since the liquid permeable layer 4 has water repellency, the liquid on the surface thereof is easily absorbed by the liquid absorbing layer 3 and the adsorption of dust by static electricity can be suppressed.
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