| 摘要 |
PROBLEM TO BE SOLVED: To produce a continuum of liquid reservoir chips in a peel apart type instant film pack by contour extrusion, to attain the quick setting of the continuum, to suppress deformation even in winding on a reel and to diminish chips in cutting. SOLUTION: A glycol modified polyester is subjected to contour extrusion preferably in a trapezoid or hog-backed sectional shape and cutting is carried out.
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