Abstract: The invention provides a laminate for retort packaging that can be applied to a retort packaging container having excellent bag drop strength at low temperature, and a container that uses this laminate for retort packaging. A laminate for retort packaging (10), wherein a sealant layer (21) is formed of a resin that is composed mainly of a polyethylene resin composition composed of at least 30% by mass but not more than 50% by mass of a high-density polyethylene, at least 40% by mass but not more than 50% by mass of a linear low-density polyethylene, and at least 10% by mass but not more than 20% by mass of a high-pressure low-density polyethylene.

Abstract: A packaging bag is formed in a bag shape by overlapping of a laminated film and a laminated film facing each other, and unsealed by cutting of a predetermined section. The packaging bag includes a zipper for opening and closing an opening, the zipper being provided along edges of the opening formed by the unsealing, a linear cut section that is formed in a functional layer of the laminated film so as to be parallel to the zipper, and becomes the edge of the opening by the unsealing of the packaging bag, and a linear cut section that is formed at a different level from the cut section in a functional layer of the laminated film so as to be parallel to the zipper, and becomes the edge of the opening by the unsealing of the packaging bag.

Abstract: In order to provide a polyethylene sealant film having great strength and good heat sealability, despite being thin, a multilayer polyethylene sealant film is produced by a method including coextruding and stretching a sealant layer formed of a low density polyethylene resin or linear low density polyethylene resin and an orientation layer including a polyethylene resin having a melting point higher than the sealant layer, by an inflation method at a temperature higher than the melting point of the sealant layer and higher than the Vicat softening temperature, but lower than the melting point of the orientation layer.

Abstract: A container 1 according to an embodiment includes a body member 2 so formed of a stacked film 10 as to be self-standing and having an upper opening end 2a and a frame member 3 that is so provided as to be joined with an outer circumferential surface of the upper opening end 2a of the body member 2 and reinforces an edge portion of the upper opening end 2a in such a way that a predetermined opening shape of the upper opening end 2a is maintained, and the frame member 3 has a container holder 4 that is provided in a position where a finger touches the body member 2 when the body member 2 is held and extends downward from the frame member 3 to a halfway point of the body member 2.

Abstract: A guide member (14) has an upper surface assisting conveyance of workpieces (44) mounted on a table (12) and is arranged downstream of the table (12) in a workpiece conveyance direction. A belt drive mechanism (16) has pulleys (26a to 26d, 28a to 28b), and endless belts (32a to 32d) wound around these pulleys, and is arranged above the table (12) and the guide member (14) so as to stride over the table (12) and the guide member (14). A first opening portion is formed on a bottom portion of the belt drive mechanism (16) to generate an upward suction force. A second opening portion is formed on the upper surface of the guide member (14) to generate a downward suction force. A magnitude of the suction force generated in the first opening portion exceeds a magnitude of the suction force generated in the second opening portion.

Abstract: The method for attaching a thin cylindrical element to a mold core is a method for attaching a film-like thin cylindrical element, which is formed in a cylindrical shape having a constant cross-sectional shape, to an outer surface of a mold core in a manner so as to cover the mold core. The method includes pressing the thin cylindrical element onto a tip portion of the mold core; guiding the thin cylindrical element to the base end side of the mold core while ejecting gas into between the mold core and the thin cylindrical element; and attaching the thin cylindrical element to the outer surface of the mold core in a manner so as to cover the mold core.

Abstract: Disclosed is an infusion bag film including: a surface layer which is formed of a polyamide resin composition; a heat sealing layer which is formed of a polyethylene resin composition containing a polyethylene as a main component; and an adhesive layer which is provided between the surface layer and the heat sealing layer, in which the polyamide resin composition is obtained by blending 0.05 parts by mass to 1 part by mass of hydrotalcite with respect to 100 parts by mass of a polyamide resin formed of one or more of Nylon 11 and Nylon 12. An object of the invention is to provide an infusion bag film which has reduced eluate in a pH test, that is, has high hot water resistance even when a polyamide resin, which can be heat-sealed in a short period of time at a high temperature, but has a problem in the hot water resistance in some cases, is used in a surface layer, and an infusion bag using the infusion bag film.

Abstract: A guide member (14) has an upper surface assisting conveyance of workpieces (44) mounted on a table (12) and is arranged downstream of the table (12) in a workpiece conveyance direction. A belt drive mechanism (16) has pulleys (26a to 26d, 28a to 28b), and endless belts (32a to 32d) wound around these pulleys, and is arranged above the table (12) and the guide member (14) so as to stride over the table (12) and the guide member (14). A first opening portion is formed on a bottom portion of the belt drive mechanism (16) to generate an upward suction force. A second opening portion is formed on the upper surface of the guide member (14) to generate a downward suction force. A magnitude of the suction force generated in the first opening portion exceeds a magnitude of the suction force generated in the second opening portion.

Abstract: In the present invention, a blocking tube (11) has a tubular blocking layer (11a) made of a material having barrier properties, and a tubular covering layer (11b) which is disposed in contact with at least the inner peripheral surface of the blocking layer (11a) and is made of a material of the same quality as a base resin. One end portion of the covering layer (11b) protrudes further toward the outside than an end portion of the blocking layer (11a) which is disposed on the outer periphery side. In the blocking tube (11), the inner peripheral surface of the covering layer (11b) forms the inner surface of a pouring hole (5), and the end face on the one end portion side in an axial direction of the covering layer (11b) and the outer peripheral surface of the covering layer (11b), which protrudes from an end portion in the axial direction of the blocking layer (11a) are embedded in the base resin in contact with the base resin.

Abstract: A gusset bag has a spout that keeps a stable self-standing attitude, facilitating easy and complete content pouring. The gusset bag includes a film bag body and a spout attached to the bag body. The bag body includes a tubular body and a rectangular-shaped bottom surface sealed and secured to one edge of the tubular body. The tubular body includes opposing flat surfaces and side surfaces, each being sealed and secured to side edges of the flat surfaces, the bottom surface and the side surfaces being formed with foldable lines, respectively, along which the bottom surface and the side surfaces are folded inward toward inside of the bag body, forming a bottom surface gusset and side surface gussets, and an inclining edge is formed to one of the upper two corners of the bag body, the spout being attached to the inclining edge.

Abstract: A check valve of one embodiment includes a spout member which has a flow path inside, an urging member supported by an inner end portion of the spout member, a valve body connected to the urging member, and a cylindrical member having a flow path inside, and is provided with a valve seat portion on an inner circumferential face, the spout member is fixedly attached to the cylindrical member so that the valve body and the urging member are inserted into the cylindrical member and the valve body is urged to the valve seat portion by the urging member, and the flow path and the flow path communicate with each other to configure an outflow path through which the content in the vessel flows out.

Abstract: A packaging bag (10) for microwave ovens has a tube part (13) formed from a pair of resin film parts (11, 12) that each include a base material layer (21), a heat seal layer (23), and an intermediate layer (22) provided between the base material layer (21) and the heat seal layer (23) and are disposed to face each other such that the heat seal layer (23) becomes an inside thereof. At least one of the pair of resin film parts (11, 12) includes cutting lines (L1, L2, L3, L4), a temporarily fixed seal part (S), and an easy peeling part (S1), and the temporarily fixed seal part (S) is located at the easy peeling part (S1).

Abstract: A check valve 1 includes a housing member 10 inside which a fluid passage is formed, and a valve member 20 disposed inside the member 10. A valve seat part 11 is provided on an inner circumference surface of the member 10, the valve member 20 includes a valve disk 21 seated in a sealable manner on a seat surface 11a of the valve seat part 11, a pressing member 22 supported with the member 10 and pressing the valve disk 21 on the seat surface 11a, and a valve driving member 23 connected to the valve disk 21 and driving the valve disk 21 against pressing force of the pressing member 22, and an operating member 30 configured to be capable of operating the valve driving member 23 such that the valve disk 21 of the valve member 20 moves apart from the seat surface 11a is provided.

Abstract: The invention provides a laminate for retort packaging that can be applied to a retort packaging container having excellent bag drop strength at low temperature, and a container that uses this laminate for retort packaging. A laminate for retort packaging (10), wherein a sealant layer (21) is formed of a resin that is composed mainly of a polyethylene resin composition composed of at least 30% by mass but not more than 50% by mass of a high-density polyethylene, at least 40% by mass but not more than 50% by mass of a linear low-density polyethylene, and at least 10% by mass but not more than 20% by mass of a high-pressure low-density polyethylene.

Abstract: In order to provide a polyethylene sealant film having great strength and good heat sealability, despite being thin, a multilayer polyethylene sealant film is produced by a method including coextruding and stretching a sealant layer formed of a low density polyethylene resin or linear low density polyethylene resin and an orientation layer including a polyethylene resin having a melting point higher than the sealant layer, by an inflation method at a temperature higher than the melting point of the sealant layer and higher than the Vicat softening temperature, but lower than the melting point of the orientation layer.

Abstract: A gusset bag (10), having a pair of flat surface portions (11, 11) facing each other and a pair of side surface portions (12, 12) facing each other which are folded toward the inside, has a side edge sealing portion (13) in which the flat surface portion and the side surface portion are heat-sealed together at side edge portions thereof, and a folded-back portion (13c) in which all or a part of the side edge sealing portion in the width direction is folded back toward the flat surface portion or the side surface portion. The gusset bag and a spout-attached gusset bag (1) using the gusset bag have an excellent self-standing property, and causes one's hand to feel little pain even when being squeezed.

Abstract: A gusset bag includes: a pair of flat surface portions facing each other; and a pair of side surface portions facing each other and folded inward of the gusset bag. A containing portion used to contain an object is formed using the flat surface portions and the side surface portions. The gusset bag has a side edge-sealing portion in which a side edge portion of a flat surface portion of the flat surface portions and a side edge portion of a side surface portion of the side surface portions are heat-sealed together, and a folded-back portion in which the entire side edge-sealing portion is folded back and affixed to the flat surface portion or the side surface portion that forms the containing portion. The peel strength of the folded-back portion is lower than the peel strength of the side edge-sealing portion.