Abstract: It is to provide a packaging container comprising: a synthetic resin container body having a flange part at a periphery of an opening at an upper end thereof; and a container cap having a top board part and a skirt part provided such that it is suspended from a-periphery of the top board part, and wherein the top board part is heat-sealed onto an upper surface of the flange part of the container body; wherein the packaging container has a first cutout part at an upper end of an outer edge of the flange part. By providing a first cutout part, a packaging container possible to achieve sealing with the container cap stably, and to open the sealing easily and surely as well can be provided, by suppressing the effect of a molten resin on a folded corner part of the skirt of the container cap when the container body is heat-sealed with the container cap.

Abstract: It is to provide a packaging container comprising: a synthetic resin container body having a flange part at a periphery of an opening at an upper end thereof; and a container cap having a top board part and a skirt part provided such that it is suspended from a-periphery of the top board part, and wherein the top board part is heat-sealed onto an upper surface of the flange part of the container body; wherein the packaging container has a first cutout part at an upper end of an outer edge of the flange part. By providing a first cutout part, a packaging container possible to achieve sealing with the container cap stably, and to open the sealing easily and surely as well can be provided, by suppressing the effect of a molten resin on a folded corner part of the skirt of the container cap when the container body is heat-sealed with the container cap.

Abstract: An ultrasonic sealing apparatus is provided for transversely ultrasonically sealing a packing material comprised of a laminated body including at least a thermoplastic resin layer having a tubular form and containing a fluid. The apparatus includes a horn having an elongated and flat sealing face and an opposing jaw with an action face including a pressing portion for pressing the packing material in cooperation with the sealing face of the horn to a define at least one transverse sealing zone of the tubular packing material. At least one groove is disposed on the action face of the opposing jaw for forming a molten thermoplastic resin bulge in a vicinal area of the at least one sealing zone on a side in contact with the fluid in the tubular packing material.

Abstract: An ultrasonic sealing apparatus prevents a sealing failure by preventing a tunnel (through passage) to form in the step portions in the vicinity of both end portions of longitudinally sealed portions, when the tubular laminated packaging material is transversely ultrasonically sealed. An ultrasonic sealing apparatus, in which a laminated packaging material containing a thermoplastic resin layer and a paper layer is formed into a tubular form and the tubular laminated packaging material is transversely ultrasonic sealed, includes a horn having an elongated and flat sealing face and an opposing jaw having an elongated pressing face which presses the laminated packaging material in cooperation with the sealing face of the horn, wherein the center portion in longitudinal direction of the pressing face of the opposing jaw is narrower than both end portions of the pressing face. Further, at a center portion in longitudinal direction of a pressing face of the opposing jaw, a recess having an arc shape, etc.

Abstract: An ultrasonic container sealing method of sealing a closure 12 to a container main body 11 with use of an ultrasonic horn 54 having a sealing action face 53 comprises applying pressure to a lap of an outer peripheral portion of the closure 12 and a flange 24 of the container main body 11 as lapped over each other by the sealing action face 53, and causing ultrasonic rotational vibration in a rotating direction about an axis parallel to the direction of application of the pressure to act on the sealing action face 53.

Abstract: An ultrasonic container sealing method of sealing a closure 12 to a container main body 11 with use of an ultrasonic horn 54 having a sealing action face 53 comprises applying pressure to a lap of an outer peripheral portion of the closure 12 and a flange 24 of the container main body 11 as lapped over each other by the sealing action face 53, and causing ultrasonic rotational vibration in a rotating direction about an axis parallel to the direction of application of the pressure to act on the sealing action face 53.

Abstract: An ultrasonic sealing apparatus comprises at least one horn having an elongated sealing face for sealing a packing material. Plural converters are erected on a side of the horn opposite to the sealing face for resonating the horn with a vibrating frequency. The ultrasonic sealing apparatus has a length that is one wavelength of the vibrating frequency and is fixed in position to a sealing jaw at a nodal plane of the vibrating frequency.

Abstract: An ultrasonic sealing apparatus is provided for transversely ultrasonically sealing a packing material comprised of a laminated body including at least a thermoplastic resin layer having a tubular form and containing a fluid. The apparatus includes a horn having an elongated and flat sealing face and an opposing jaw with an action face including a pressing portion for pressing the packing material in cooperation with the sealing face of the horn to a define at least one transverse sealing zone of the tubular packing material. At least one groove is disposed on the action face of the opposing jaw for forming a molten thermoplastic resin bulge in a vicinal area of the at least one sealing zone on a side in contact with the fluid in the tubular packing material.

Abstract: A container having a spout of thermoplastic synthetic resin fixed to an outlet edge portion defining a liquid outlet formed in a top portion of the container. The outlet edge portion of the container is covered with a thermoplastic synthetic resin layer at least over inner and outer surfaces thereof. The spout comprises a tubular body, and inner and outer two outward flanges formed at one end of the tubular body integrally therewith and holding the outlet edge portion of the container therebetween from inside and outside. The inner and outer flanges of the spout are fixed respectively to the inner and outer surfaces of the outlet edge portion of the container.