Abstract: The invention provides a medical container that is made by firmly and surely welding, to a sheet or film mainly composed of a thermoplastic resin that is not limited to those containing polar groups, a port member that is mainly composed of a thermoplastic resin that is identical with or different from the sheet or film. The medical container is produced by a first process for molding the sheet or film into a bag shape and temporarily fixing the port member to a prescribed position of the bag-shaped sheet or film; and a second process for irradiating the temporary fixing part of the bag-shaped sheet or film and the port member with laser beam to weld the sheet or film to the port member.

Abstract: The present invention provides a method for producing a medical container capable of firmly and surely welding, to a sheet or film mainly composed of a thermoplastic resin not limited to those containing polar groups, a port member mainly composed of a thermoplastic resin that is identical with or different from the sheet or film, and a medical container obtained by the production method. This method comprises a first process for molding the sheet or film into a bag shape and temporarily fixing the port member to a prescribed position of the bag-shaped sheet or film; and a second process for irradiating the temporary fixing part 7 of the bag-shaped sheet or film 1 and the port member 5 with laser beam 35 to weld the sheet or film to the port member.