Abstract: The packaging materials for photosensitive materials having particular coextruded multilayers and a flexible sheet.According to the composition, the packaging material is excellent in curl resistance, in physical strength particularly tear strength or in tearability by hand. These packaging materials have various properties necessary for packaging photosensitive materials, and are excellent in bag-making ability for automatic bag-making machine.

Abstract: A process for producing a chemical analytical slide including an upper slide frame, a lower slide frame and a chemical analytical film therebetween. The process comprises passing a strip sheet in a longitudinal direction. printing a bar code on the strop sheet by intaglio printing so that lines of the bar code extend in the longitudinal direction, forming the upper slide frame or lower slide frame from the printed strip sheet and forming the chemical analytical slide from the printed upper slide frame or lower slide frame. In a further aspect, a chemical analytical slide is provided which has a code which extends from one edge of the slide frame to the opposite edge.

Abstract: In a container for a photographic film cartridge having a body and a cap made of a high-pressure branched low-density polyethylene resin and fitted to said body, the improvement comprising that said polyethylene resin has a melt index of 7 to 40 g/10 minutes and a density of 0.918 to 0.930 g/cm.sup.3 and contains 0.05 to 1 wt. % of a fatty acid amide lubricant and that the bending rigidity of said cap is 1200 to 4000 kg/cm.sup.2.This resin for the cap is superior in fluidity, and molding troubles and coloring troubles at molding remarkably decrease. The molding cycle is also shortened. This cap is superior in fitness to the container body, and moisture sealing is improved.

Abstract: The packaging materials for photosensitive materials having particular coextruded multilayers and a flexible sheet.According to the composition, the packaging material is excellent in curl resistance, in physical strength particularly tear strength or in tearability by hand. These packaging materials have various properties necessary for packaging photosensitive materials, are excellent in bag-making ability for automatic bag-making machine.