Film joining method, a wide film produced by the joining method and a covering material for agricultural use made of the wide film
AssigneeAsahi Glass Company, Limited
InventorsTetsuro Tsukada, Tutomu Fusyuku
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Abstract
A method for joining films having a hydrophilized surface at their single surface and an excellent melt-bonding force at the melt-bonded portion, which is formed by disposing two film (A) having a hydrophilized surface at their single surface to align the hydrophilized surfaces so as to butt each end portion; overlaying a film (B) on a side of non-hydrophilized surface of the films (A) so as to bridge the butting portion, and hot-pressing the overlapping portion (c1) to join the two films (A). The wide film obtained by the above-mentioned method is suitable for a covering material for agricultural use.
Claims10
A film joining method which comprises disposing two film (A) having a hydrophilized surface at their single surface to align the hydrophilized surfaces so as to butt each one end portion;
- overlaying a film (B) on a side of non-hydrophilized surface of the films (A) so as to bridge the butting portion, and hot-pressing the overlapping portion (c1) to join the two films (A).
Dependencies are inferred from the claim text.