Method of continuously assembling chemical analysis slides

• US 4,878,971 A
• Filed: 01/27/1988
• Issued: 11/07/1989
• Est. Priority Date: 01/28/1987
• Status: Expired due to Term

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Ishida, Yukio, Shiino, Tatsuo, Tsunekawa, Yuzo
• Primary Examiner(s): Dawson, Robert A.
• Application Number:
  US07/148,834
• Time in Patent Office: 650 Days
• Field of Search: 156/70, 156/252, 156/324, 422/66, 422/104, 428/78, 428/136, 436/44, 436/46
• US Class Current: 156/70
• CPC Class Codes: B01L 2300/0822 Slides
• CPC Class Codes: B01L 2300/0887 Laminated structure
• CPC Class Codes: B01L 3/508 rigid containers not provided for above
• CPC Class Codes: B32B 2038/045 Slitting
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 38/0004 Cutting, tearing or severing, e.g. bursting; Cutter details cutting in general B26D; laminating combined with punching or perforating B32B38/04; removing all or part of the layers B32B38/10; cutting in combination with laying up and registration B32B38/185 takes precedence
• CPC Class Codes: G01N 33/525 Multi-layer analytical elements
• CPC Class Codes: Y10T 156/1056 Perforating lamina
• CPC Class Codes: Y10T 428/24314 Slit or elongated
• CPC Class Codes: Y10T 436/110833 Utilizing a moving indicator strip or tape

Abstract

A chemical analysis slide includes at least two plastic sheets superposed one on another and bonded together, and a chemical analysis film sandwiched therebetween. In a method of continuously assembling such chemical analysis slides, while at least two plastic sheets in continous lengths are conveyed in the longitudinal direction thereof, a plurality of chemical anaylsis films are sandwiched between the plastic sheets at predetermined intervals, the plastic sheets are bonded together at a portion circumscribing each of the chemical analysis films sandwiched therebetween to form a sheet assembly and individual chemical analysis slides are cut out from the sheet assembly. At least one of the sheets in continuous lengths is provided with a plurality of slits extending in the transverse direction of the sheet at regular intervals at the remaining portions of the sheet which do not form a part of the chemical analysis slide.

Claims

1. A method of continuously assembling chemical analysis slides each including at least two plastic sheets superposed one on another and bonded together, and a chemical analysis film sandwiched therebetween in which while at least two plastic sheets in continuous lengths are conveyed in the longitudinal direction thereof, a plurality of chemical analysis films are sandwiched between the plastic sheets at predetermined intervals, the plastic sheets are bonded together at a portion circumscribing each of the chemical analysis films sandwiched therebetween to form a sheet assembly and individual chemical analysis slides are cut out from the sheet assembly,

characterized in that at least one of the sheets in continuous lengths is provided with a plurality of slit means extending in the transverse direction of the sheet at regular intervals at the remaining portions of the sheet which do not form a part of the chemical analysis slide.

2. A method of continuously assembling chemical analysis slides as defined in claim 1 in which a plurality of locating holes are formed in said at least one sheet at the remaining portion, at least one between each pair of slit means.

3. A method of continuously assembling chemical analysis slides as defined in claim 2 in which each of said slit means comprises a plurality of slits extending in the transverse direction of the sheets.