Abstract: An optical disc accommodating case is provided, which permits quick and smooth accommodation and removal of an optical disc, permits reliable accommodation of the disc without causing contamination or scars and scratches to the disc, and permits coping with an assembling process in which the disc is automatically loaded into the case by a robot. A disc holder having an optical disc support has a wall to be in contact with an edge of an optical disc for preventing detachment of the optical disc in a horizontal direction. The wall has lock members for preventing upward detachment of the optical disc. The wall with the lock members is flexible, and the lock members are capable of being flexed toward an outer periphery of the optical disc to permit the optical disc to be accommodated on the optical disc support while the optical disc is pushed in a downward direction.

Abstract: An optical disc case permits taking out and storing an optical disc without the possibility of damage to the very important center hole of the disc while permitting conveniently taking hold of the disc and very readily taking out and storing the disc. A disc holder 7 can be held in a case body in an upwardly tilted state with its stem end located on the inner bottom surface of the case body, and it has a disc holding portion 5 for detachably holding a portion of the edge of the optical disc 2 and stopper portions 6 for preventing detachment of the disc in the direction opposite to the direction toward the stem end. In its upwardly tilted state, the disc holder holds the accommodated optical disc in a tiled state.

Abstract: An adhesive transfer device is provided, which can lead a separable paper sheet after adhesive transfer to the outside of its case so that the separable paper sheet is not collected therein, is not consumable but capable of being re-used by renewing a tape roll, and permits the user to transfer the adhesive while watching the end of a transfer member from above with its case in a laid-down state. A tape roll support 6 has a first bevel gear 7, and a second bevel gear 2 meshing with the first, bevel gear and having its axis, crossing the axis of the first bevel gear, has fewer teeth than the first bevel gear, and is formed on one side of a feed roller 8, which is disposed on the extension of the separable paper sheet 4 returning, after transfer of adhesive, from the transfer member into the case.

Abstract: An inorganic hardening composition contains 100 parts by weight of an alkaline earth metal oxide, and 5 to 80 parts by weight of an organic carbonic acid compound.

Abstract: An apparatus for producing a corrugated tube contains a roller assembly composed of plural rollers having plural convexed rings, respective convexed rings forming a helix as a whole so as to substantially form a single rotating shaft body, and a synthetic resin supplier for supplying a strip of synthetic resin onto the roller assembly. The pitches between the convexed rings, and the diameters and the widths of the convexed rings are so constructed as to be gradually decreased in accordance with the contraction percentage of the synthetic resin. The apparatus is provided with a follower ring on a roller valley portion between the convexed rings, the follower ring being rotatable in response to circumferential speed of the apex of the convexed ring.

Abstract: An optical disc accommodation device permits an optical disc to be removed therefrom and inserted therein very quickly and readily with a single hand of a driver while driving a vehicle, as well as permitting very quick and ready removal and insertion of an optical disc in home or office installation. The device includes a box-shaped casing and an optical disc holder accommodated thereinto carry an optical disc. The box-shaped casing includes an accommodating part which can movably accommodate the optical disc holder and a lid hinged to one side of the accommodating part for opening and closing the same. One side of the casing has an opening for inserting therethrough the optical disc. A spring is provided between the optical disc holder and the accommodating part to bias the optical disc holder in a direction of projection from the opening. A lock includes a locking member provided on the optical disc holder and a raised portion provided on an inner surface of the accommodating part.

Abstract: An apparatus for producing a corrugated tube contains a roller assembly composed of plural rollers having plural convexed rings, respective convexed rings forming a helix as a whole so as to substantially form a single rotating shaft body, and a synthetic resin supplier for supplying a strip of synthetic resin onto the roller assembly. The pitches between the convexed rings, and the diameters and the widths of the convexed rings are so constructed as to be gradually decreased in accordance with the contraction percentage of the synthetic resin. The apparatus is provided with a follower ring on a roller valley portion between the convexed rings, the follower ring being rotatable in response to circumferential speed of the apex of the convexed ring.

Abstract: An optical disc accommodation or storage device permitting storage of an optical disc in a readily visible, neat and stable state, while also permitting the insertion and removal of the optical disc quickly and smoothly without causing damage to a record portion of the disc or the accommodation device.The device comprises a sheet 2 having an optical disc accommodation recess member 5. The optical disc accommodation recess member 5 is formed with stopper walls 11a for contacting a portion of the outer periphery of an optical disc 3 accommodated in the optical disc accommodation recess member 5. Therefore, the disc 3 is prevented from being deteached from the optical disc accommodation recess member 5. The outer edge of the optical disc accommodation member is provided with optical disc retaining pieces 6 to 8 projecting toward the center of the optical disc accommodation recess member 5 for clamping the optical disc 3 in cooperation with the bottom surface of the recess member 5.

Abstract: An optical disc accommodation device is disclosed which permits a plurality of optical discs to be stored in a neat arrangement and so as to be easily retrieved without allowing possibility of contaminating or causing scars and scratches to the recording surface during the accommodation. The optical disc accommodation device comprises an optical disc accommodation bag section having a sheet formed with an optical disc accommodation recess and a soft sheet bonded to the upper surface of the sheet, a stepped recess formed rearward of the optical disc accommodation bag section and open to the optical disc accommodation recess. Stopper projections are provided on the opposite sides of the optical disc accommodation recess such as to be in contact with the outer periphery of the optical disc for preventing the optical disc from falling out through an opening of the optical disc accommodation bag section.

Abstract: A floppy disk accommodation device has a synthetic resin sheet for accommodating and storing a plurality of floppy disks in a stable state. The synthetic resin sheet has one or more floppy disk accommodation recesses 3 formed at respective positions thereon. In a lower portion of each floppy disk accommodation recess 3, a bag-like floppy disk detachment-free accommodation section 5 is formed. The surface of the floppy disk accommodation recess 3 is formed, above an upper opening of the accommodation section, with stoppers 6 for preventing detachment of the floppy disk 4. The recess surface is also formed, between the opening of the bag-like floppy disk detachment-free accommodation section 5 and the stoppers 6, with a ridge 7 for providing a gap between the back surface of an upper portion of the accommodated floppy disk 4 and the floppy disk accommodation recess surface.

Abstract: A floppy disk container comprises a container body and and a plate member for preventing upward release of a floppy disk. The container body has its back side provided with a member for securing it to a file or the like, and it also has a floppy disk accommodation surface provided with ribs for supporting the floppy disk in a raised state. The floppy disk container itself thus can be attached to a file or the like to facilitate floppy disk arrangement. Further, the floppy disk, which has its take-out portion supported in a state raised from the floppy disk accommodation surface, can be taken out readily and smoothly.

Abstract: An automatic adhesive transfer device using an adhesive tape is used to bond desired portions of paper or the like in offices, home, schools, etc. In the device, an adhesive tape roll, which is formed by winding an adhesive tape comprising a double-side release paper with an adhesive coating thereon, with the adhesive coated surface on the outer side, is loaded in a casing. In the use of the device, the adhesive tape roll can be rotated only in the direction of adhesive transfer and at a rotational speed suitable therefor. The device is thus not damaged by applying force to it in the opposite direction i.e., a rotation-blocked direction. In addition, it is possible to transfer the adhesive to a desired location accurately at all times.

Abstract: A floppy disk container comprises a plate having an adhesive tape or agent applied to a rear face thereof. Three edges of a flexible plastic film of an approximately square shape are fastened to the plate, and the remaining edge of the film is free from attachment to the plate and positioned at a mid portion of the plate in order to obtain an upwardly opening insertion opening of the floppy disk container. Thus, a bag-like floppy disk container is obtained. A pair of stoppers are formed to protrude from an upper portion of the front face of the plate at positions just above the top edge of the floppy disk when the floppy disk is in the container, so as to abut the top edge of the floppy disk and prevent the floppy disk from falling out of the container. In addition, a transverse elongated ridge in parallel with the insertion opening is formed on the front face of the plate between the insertion opening and the stoppers, in order to leave a gap between the top edge of the floppy disk and the plate 3.

Abstract: A method is provided for continuously manufacturing a synthetic resin tube. A plurality of pre-molded flat strips of synthetic resin material is passed through a heating zone to soften the strips. Then, the strips thus softened composed of a first strip for forming an outermost tube wall, a second strip for forming an innermost tube wall and at least one intermediate strip for forming an intermediate tube wall sandwiched between the first and second strips are fed to a mandrel comprising a plurality of rotating rollers arranged in a circular array and rotatably journalled in an end plate. The strips fed to the mandrel are wrapped around and advanced axially along the length of the mandrel with portions of adjacent turns of the intermediate strip not overlapping each other. The strips thus wrapped around the mandrel is then pressed by a pressure roller so as to be joined and welded to form a tube.

Abstract: A method for forming a corrugated tube having a smooth inner wall surface and a corrugated outer wall are provided. A first strip of resin material is wrapped around first portions of rollers arranged in a circular array and is helically wrapped around the first portions of the rollers each having equally spaced ridges therearound to form the corrugated outer wall. A second strip of resin material is fed from the interior of second portions of rollers arranged in a circular array onto the inner surface of the outer wall being manufactured and bonded thereto. The second strip bonded to the outer all is wrapped around the second portions of the rollers each having a smooth surface to form the smooth inner wall.

Abstract: A method and apparatus for forming a corrugated tube having a smooth inner wall surface and a corrugated outer wall are provided. A first strip of resin material is wrapped around first portions of rollers arranged in a circular array and is helically wrapped around the first portions of the rollers each having equally spaced ridges therearound to form the corrugated outer wall. A second strip of resin material is fed from the interior of second portions of rollers arranged in a circular array onto the inner surface of the outer wall being manufactured and bonded thereto. The second strip bonded to the outer wall is wrapped around the second portions of the rollers each having a smooth surface to form the smooth inner wall.

Abstract: A widthwise-stretched film is lap-sealed on one side of a backing paper, and polyethylene is extruded and coated on the surface of said film to form a release layer thereon. A pressure-sensitive adhesive composed mainly of polyacrylic ester is then coated on the other side of the backing paper. In this manner, a paper-backed adhesive tape of the pressure-sensitive type is prepared.