Seal tape sticking device

A device for applying seal tape to sheet-like material, wherein an adhesive tape is fed together with a portion of the material in a feed direction and pressed between a pair of opposed rollers, the device comprising:

• a machine body;
• a fixed arm projecting substantially horizontally from the machine body;
• a common roller freely rotatably mounted at the distal end of the fixed arm, an operating position for other rollers being defined by operative engagement with the common roller, the material and the tape being pressed between rollers in the operating position;
• a first movable arm extending generally across the feed direction and having a first positionable roller disposed at the distal end thereof, the first movable arm being pivotally mounted on the machine body for movement of the first roller between the operating position and a first stand-by position;
• a second movable arm arranged generally along the feed direction and having a second positionable roller disposed at the distal end thereof, the second movable arm being pivotally mounted on the machine body for movement of the second roller between the operating position and a second stand-by position;
• means for alternately moving the first and second arms to alternately move the first and second rollers into and out of the operating position and their respective stand-by positions, the first and second arms remaining substantially fixed in orientation relative to the feed direction throughout their alternating pivotal movement;
• and,
• means for rotatably driving each of the first and second rollers when disposed in the operating position, whereby the seal tape can be applied to annular portions of the material when the first movable roller is in the operating position and can be applied to lengthwise portions of the material when the second movable roller is in the operating position.