Process of fusion-bonding plastic film and drug bag
The present invention relates to a process of fusion-bonding a plastic film ( 8 a, 8 b ) to an object to be fusion-bonded such as a port member ( 16 ) in manufacturing a drug bag, and relates to a drug bag. The present fusion-bonding process comprises steps of disposing a heat generation element generating heat by absorbing infrared laser, on an opposite surface ( 8 c ) of the plastic film ( 8 a, 8 b ) from the port member ( 16 ), or between the port member ( 16 ) and the plastic film ( 8 a, 8 b ), pressing a press member ( 30 a, 30 b ), which allows infrared laser to be transmitted therethrough, from a side of the plastic film ( 8 a, 8 b ), and irradiating the infrared laser (L) to the heat generation element ( 24 a, 24 b ) through the press member ( 30 a, 30 b ).
1. A process of manufacturing a drug bag, comprising:
sealing a front-side plastic film and a back-side plastic film such that a drug bag body having a plurality of compartments is formed, the plurality of compartments comprising a first compartment and a second compartment separated by a weak seal portion;
placing a portion of a port member between the front-side plastic film and the back-side plastic film;
placing a plastic film for a handle on a front surface of the front-side plastic film;
disposing a heat generation element on a front surface of the plastic film for the handle;
pressing a press member toward the heat generation element, the plastic film for the handle and the front-side plastic film;
irradiating infrared laser to the heat generation element through the press member during the pressing such that the heat generation element generates heat by absorbing infrared laser transmitted through the press member; and
fusion-bonding the plastic film for the handle of the front-side plastic film,
wherein the port member is placed such that one of the compartments communicates with outside of the drug bag body through the port member, the weak seal portion is unsealable by pulling the plastic film for the handle away from the front-side plastic film of the drug bag body, the weak seal portion includes a first weak seal portion near the port member and a second weak seal portion far from the port member, and
the heat generation element is disposed at equal distances from the first weak seal portion and the second weak seal portion.
2. The process according to claim 1 , wherein the infrared laser has a wavelength belonging to a wavelength band of 700-1200 nm.
3. A process of manufacturing a drug bag, comprising:
sealing a front-side plastic film and a back-side plastic film such that a drug bag body having a plurality of compartments is formed, the plurality of compartments comprising a first compartment and a second compartment separated by a weak seal portion;
placing a portion of a port member between the front-side plastic film and the back-side plastic film;
placing a plastic film for a handle on a front surface of the front-side plastic film;
disposing a heat generation element on a front surface of the plastic film for the handle;
pressing a press member toward the heat generation element, the plastic film for the handle and the front-side plastic film;
irradiating infrared laser to the heat generation element through the press member during the pressing such that the heat generation element generates heat by absorbing infrared laser transmitted through the press member; and
fusion-bonding the plastic film for the handle of the front-side plastic film,
wherein the port member is placed such that one of the compartments communicates with outside of the drug bag body through the port member, the weak seal portion is unsealable by pulling the plastic film for the handle away from the front-side plastic film of the drug bag body, the weak seal portion includes a first weak seal portion near the port member and a second weak seal portion far from the port member, and
the heat generation element is disposed nearer the second weak seal portion than the first weak seal portion.
4. The process according to claim 3 , wherein the infrared laser has a wavelength belonging to a wavelength band of 700-1200 nm.
5. A process of manufacturing a drug bag, comprising:
sealing a front-side plastic film and a back-side plastic film such that a drug bag body having a plurality of compartments is formed, the plurality of compartments comprising a first compartment and a second compartment separated by a weak seal portion;
placing a plastic film for a first handle on a front surface of the front-side plastic film;
disposing a heat generation element on a surface of the plastic film for the first handle;
placing a plastic film for a second handle on a back surface of the back-side plastic film;
pressing a press member toward the heat generation element, the plastic film for the first handle and the front-side plastic film;
irradiating infrared laser to the heat generation element through the press member during the pressing such that the heat generation element generates heat by absorbing infrared laser transmitted through the press member; and
fusion-bonding the plastic film for the first handle of the front-side plastic film,
wherein,
the weak seal portion is unsealable by pulling the plastic film for the first handle away from the front-side plastic film of the drug bag body
the disposing of the heat generation element comprises positioning a first heat generation element adjacent to the plastic film for the first handle and a second heat generation element adjacent to the plastic film for the second handle without overlapping each other in a laser irradiation direction,
the infrared laser is irradiated from a front side of the drug bag body to the first heat generation element through the press member and to the second heat generation element through the front-side plastic film and the back-side plastic film, and
the infrared laser is transmitted through the front-side plastic film and the back-side plastic film.
6. The process according to claim 5 , wherein the first heat generation element is formed in a plurality, the second heat generation element is formed in a plurality, and the first heat generation elements and the second heat generation elements are alternately disposed in a line form.
7. The process according to claim 6 , wherein the infrared laser has a wavelength belonging to a wavelength band of 700-1200 nm.
8. The process according to claim 5 , wherein the infrared laser has a wavelength belonging to a wavelength band of 700-1200 nm.