EP4512740A1 - Cover member, container with cover member, combination of cover member and container, and method for producing cover member - Google Patents

Cover member, container with cover member, combination of cover member and container, and method for producing cover member Download PDF

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Publication number
EP4512740A1
EP4512740A1 EP23811870.7A EP23811870A EP4512740A1 EP 4512740 A1 EP4512740 A1 EP 4512740A1 EP 23811870 A EP23811870 A EP 23811870A EP 4512740 A1 EP4512740 A1 EP 4512740A1
Authority
EP
European Patent Office
Prior art keywords
lid
container
small
edge
forming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23811870.7A
Other languages
German (de)
English (en)
French (fr)
Inventor
Hiroyoshi Hayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KY7 Ltd
Original Assignee
KY7 Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KY7 Ltd filed Critical KY7 Ltd
Publication of EP4512740A1 publication Critical patent/EP4512740A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/14—Non-removable lids or covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/005—Closures provided with linings or internal coatings so as to avoid contact of the closure with the contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
    • B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container
    • B65D77/2044—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure
    • B65D77/2048—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure whereby part of the container or cover has been weakened, e.g. perforated or precut
    • B65D77/2056—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure whereby part of the container or cover has been weakened, e.g. perforated or precut the cover being weakened
    • B65D77/206—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure whereby part of the container or cover has been weakened, e.g. perforated or precut the cover being weakened so as to uncover one or more preformed openings made through some layers of the cover
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2231/00—Means for facilitating the complete expelling of the contents
    • B65D2231/02—Precut holes or weakened zones
    • B65D2231/022—Precut holes or weakened zones for permitting the insertion of a tubular contents-removing device, e.g. a drinking straw
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00046—Drinking-through lids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/00074—Shape of the outer periphery curved
    • B65D2543/00092—Shape of the outer periphery curved circular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00268—Paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2075—Lines of weakness or apertures
    • B65D2577/2091—Lines of weakness or apertures in cover

Definitions

  • the present invention relates to a lid, a container with a lid, a combination of a lid and a container, and a method for manufacturing a lid.
  • a means for joining the lid to an edge which is configured to form an outer periphery of the opening at the upper end of the container by using a manner like hot pressing (sealing method) is known as a method for attaching the lid to the container.
  • a means for removing the lid and a means for providing a tab on the lid as recited in Patent Literature 1 is known as a method for taking the contents stored in the lid.
  • a bell-shaped or guitar-shaped hole is configured to be opened to form a spout.
  • a method for attaching the lid to the container there is known a method (fitting method) of forming a state in which the lid is in contact with an edge configured to form an outer periphery of an opening at an upper end of the container by fitting a structure portion such as a bent part or a combination of a top surface portion and a side wall part to the edge of the container in a case where the lid has the top surface portion, the bent portion, and the side wall portion.
  • a method for forming such a lid a method for forming the lid by shaping a blank material for forming the lid is known.
  • Patent Literature 1 in a case where the lid is formed of a paper-based material, there is a possibility that a moisture permeation into the fibers constituting the lid leads to a lid stiffness which is made to be greatly weakened, and strength of the lid is reduced. Thus, there is room for improvement in terms of suppressing moisture permeation into the fibers constituting the lid.
  • a resin layer on the surface of the lid (on the opposing surface to the container or the like).
  • a resin coating layer is usually formed on the surface of the container for waterproofing the container, and depending on the resin material constituting the resin layer, an adhesivity with the resin constituting the resin coating layer is weakened, and there is a possibility that it becomes difficult to bond the container and the lid to each other using by the sealing method. Therefore, there is room for improvement in that it is possible to bond the container and the lid by the sealing method even if the types of resin constituting the resin coating layer formed on the surface of the container are varied.
  • the lid is formed of a paper-based material, and where it forms the top surface portion, the bent part, and the side wall part by shaping the blank material, due to the action of the restoring force of the paper-based material, the shape may be returned to the original state after once the side wall part, the bent part, etc. are formed. Even when the lid is fitted to the container in a case where the shape is restored at the bent part or the like, there is a possibility that the contact between the lid and the container is loosened, a gap between the lid and the container is readily generated, and the contents of the container result in spilling out from the gap.
  • the present invention has been made in view of such problems, and an object of the present invention is to provide a lid, a container with a lid, a combination of the lid and the container, and a method for manufacturing the lid, which are capable of suppressing moisture permeation into fibers comprising the lid and capable of bonding the container and the lid by a sealing method even when the types of resin forming a resin coating layer formed on the surface of the container are varied. Furthermore, another object of the present invention is to provide a lid, a container with a lid, a combination of a lid and a container, and a method for manufacturing a lid capable of suppressing returning of a shape of a blank material after shaping.
  • the present invention is summarized in (1) to (21) hereunder.
  • a lid, a container with a lid, a combination of the lid and the container, and a method for manufacturing the lid which are capable of suppressing moisture permeation into fibers constituting the lid and capable of bonding the container and the lid by a sealing method even when the types of resin forming a resin coating layer formed on the surface of the container are varied.
  • the lid is formed by shaping the blank material, it is possible to provide the lid, the container with a lid, the combination of the lid and the container, and the method for manufacturing the lid capable of suppressing the shape return after the shaping of the blank material.
  • a lid according to the present invention will be described in detail with reference to the drawings.
  • the lid according to the present invention will be described by exemplifying a lid used for a container (cup) for containing various beverages such as a coffee cup, but is not limited to a lid of a container for containing beverages, and can also be applied as a lid of a container for containing food items other than beverages.
  • the lid according to the present invention can also be applied to various articles other than food and drink, for example, parts such as bolts and nuts, and containers capable of storing articles other than those described above.
  • the shape of the lid is not limited to a circular shape in plan view, and can be applied to various shapes other than a circular shape, such as an elliptical shape, a rectangular shape, a polygonal shape such as a triangular shape, a chamfered rectangular shape, and a chamfered polygonal shape.
  • a Z-axis direction is a vertical direction (upper side is a +Z direction, lower side is a -Z direction)
  • an X-axis direction is a front-rear direction (rear side is in a +X direction, and front side is in a -X direction)
  • directions along an X-axis and a Y-axis orthogonal to each other defined on a plane having the Z-axis direction as a normal line are the X-axis direction and the Y-axis direction
  • an XY plane that is a plane pasted on the X-axis and the Y-axis is a horizontal plane.
  • a lid 1 according to a first embodiment is formed so as to be in contact with a container 101 having an opening 102 formed at an upper end and an edge 103 serving as an upper end edge forming an outer periphery of the opening 102.
  • the lid 1 is formed to be able to be joined to the container 101 having the opening 102 (opening 102 formed by a portion surrounded by the edge 103) formed at an upper end and the edge 103 to be an upper end edge forming an outer periphery of the opening 102.
  • FIGS. 14A and 14B are a perspective view and a cross-sectional view illustrating an example of a container with a lid 150 in which the lid 1 illustrated in Figs. 1A, 1B, and 1C is joined to the container 101.
  • the lid 1 can be used by being joined along the edge 103.
  • a region joined to the edge 103 in plan view of the lid 1 is referred to as a joining region R.
  • Fig. 1A is a plan view illustrating an example of the lid 1.
  • Fig. 1B is a cross-sectional view schematically illustrating a longitudinal cross section taken along line A-A in Fig. 1A.
  • FIG. 1C is an enlarged view of a part of a circumferential surface part 11 of a penetrating part 10 as described below.
  • a container having flexibility at the edge 103 of the opening 102 is more preferably used. However, these do not prohibit the container 101 from being a container having less flexibility or hardly recognized, such as a metal container.
  • the joining region R corresponds to a region formed in a substantially annular shape along the opening 102 in a shape corresponding to the opening 102 of the container 101.
  • the lid 1 is formed of a blank material 30.
  • the blank material 30 is obtained by processing a sheet material formed of a material corresponding to the material of the lid 1 into a shape corresponding to the shape of the lid 1.
  • the case where the lid 1 is formed of the blank material 30 is not limited to the case where the lid 1 is formed of only the blank material 30, and includes a case where the lid 1 has a structure in which a member such as a tab member 22 is attached to the blank material 30, and also includes a case where the lid 1 is subjected to various processes such as a shaping process (emboss process or the like) on the blank material 30.
  • the blank material 30 is formed of a sheet material including a fiber sheet 31 including fibers including a paper-based material and a resin material 32.
  • the sheet material forming the blank material 30 has a structure in which the resin material 32 is attached to at least some of the fibers 31A forming the inside of the fiber sheet 31.
  • the blank material 30 has a structure in which the resin material 32 is contained in at least some of the fibers 31A forming the inside of the fiber sheet 31.
  • the fiber sheet 31 containing a paper-based material examples include so-called paper obtained by filtering out a slurry of fibrous raw materials on a net and drying, pressing and drying, and papermaking to form a sheet, so-called air-laid sheets obtained by stacking open fibrous raw materials such as crushed pulp obtained by crushing raw material sheets made of pulp-based fibers etc. with a crushing machine by an air flow and fixing fibers of a fibrous body with a binder, and so-called papers produced by sticking vegetable fibers and other fibers.
  • the fiber sheet containing the paper-based material includes a fiber sheet having a laminated structure in which a plurality of papers as described above are laminated.
  • the fiber sheet 31 includes, in addition to the paper-based material, a sheet material having fibers other than pulp, such as chemical fibers, fibers imparted with functions such as water resistance, metal fibers, and glass fibers.
  • the fiber sheet 31 may be composed of only the fibers 31A (only entangled structure of the fibers 31A), or may have a structure in which a plurality of the fibers 31A are crosslinked with a crosslinking agent or the like, or may contain other additives except for the resin material as described below.
  • the shape of the fiber sheet 31 is stabilized, and the fibrillated state is hardly formed.
  • the fibers 31A constituting fiber sheet 31 may be composed of one unit fiber, or may have a structure in which a plurality of unit fibers are entangled, and fibers having any structure may be included in fiber sheet 31.
  • the fiber sheet 31 is preferably formed in a state in which a plurality of fibers having such a structure are further entangled.
  • the paper-based material may contain fibers such as non-pulp-based natural fibers, synthetic fibers, and regenerated fibers in addition to those composed only of pulp, but the paper-based material preferably contains pulp in an amount of 50 mass% or more, more preferably 70 mass% or more, further preferably 80 mass% or more, and particularly preferably 100 mass% of pulp.
  • a wood-based material such as a nonwoven fabric or a wood foil, or a composite material with a material such as an aluminum foil can also be used, but in the case of forming a composite material, it is preferable that the pulp be contained in an amount of 50 mass% or more as the whole composite material, and it is particularly preferable that the pulp be contained in an amount of 80 mass% or more. The higher the content of pulp is, the more easily the paper-based material is biodegraded, which is preferable.
  • the lid 1 it is preferable that at least a part of the resin material 32 be attached to fibers formed of pulp among the fibers 31A. However, this does not prohibit at least a part of the resin material 32 from adhering to fibers such as non-pulp natural fibers, synthetic fibers, and regenerated fibers among the fibers 31A.
  • the resin material 32 may be filled in at least a part of a space (gap space) formed between the fibers 31A constituting fiber sheet 31 (that is, a state in which the resin material 32 is impregnated between at least some of the fibers 31A may be formed), and the gap space may be substantially occupied by the resin material 32.
  • the lid 1 includes the joining region corresponding part 5A and the lid region corresponding part 5B.
  • the penetrating part 10 is preferably formed at least in the lid region corresponding part 5B.
  • the penetrating part 10 has a structure (penetrating structure) cut in the vertical direction (thickness direction, Z-axis direction) from one surface to the other of the blank material 30, and is a so-called cut 8.
  • the penetrating part 10 has a circumferential surface part 11 and an end part 12. The circumferential surface part 11 extends in the longitudinal direction of the penetrating part 10, and the end part 12 is formed at a cut end.
  • the penetrating part 10 can perform as a vent part.
  • the vent part now indicates a portion through which gas can pass from one side surface of the lid 1 to the other side surface (the direction from an opposing surface 73 to an exposed surface 72).
  • the penetrating part 10 may perform any other part in addition as to the vent part.
  • the penetrating part 10 may perform as an insertion port 19 or a portion constituting the insertion port 19 into which a member is inserted from the outside of the container with a lid 150 toward the inside (space 105) of the container 101.
  • the lid 1 has the penetrating part 10
  • the penetrating part 10 is formed so as to be able to perform as the insertion port 19.
  • a straw or its similarities is exemplified as a member that can be inserted from the insertion port 19.
  • the penetrating part 10 illustrated in the example of Fig. 1A can also perform as a vent part as described above.
  • the shape of the penetrating part 10 is not particularly limited as long as it can be formed by cutting.
  • a cut 8 having a cross shape into which the blank material 30 is made to cut in the vertical direction is formed in the lid 1, and the cut 8 forms the penetrating part 10.
  • the penetrating part 10 also serves as the insertion port 19 as described above.
  • the shape of the cut 8 to form the penetrating part 10 is not limited to the cross shape as long as usable for the insertion port 19, and may be a C shape as exemplified in Figs. 4A and 4B , or may be fine with other various shapes such as a tongue piece shape.
  • Figs. 4A and 4B are plan views schematically illustrating another example that the lid 1 has the insertion port 19 as the penetrating part 10.
  • a cross section of the fiber sheet 31 is exposed on a region where the circumferential surface part 11 of the penetrating part 10 is formed (a region of the circumferential surface part 11). Furthermore, what is exposed on the circumferential surface part 11, i.e., at least a part of the cross section of the fiber sheet 31 is at least a part of the resin material 32. Examples that at least a part of the resin material 32 is exposed on the circumferential surface part 11 is include the cases where a part of the resin material 32 faces a partial region of the circumferential surface part 11 (a region of the cross section of the fiber sheet 31) as illustrated in Fig.
  • Fig. 1C indicates the example that a cross section of at least some of the fibers 31A are exposed on the circumferential surface part 11. However, this does not prohibit the case where the cross section of at least some of the fibers 31A are not exposed on the circumferential surface part 11, and does not prohibit the case where the side surface of the fiber 31A is exposed.
  • an inclined part 13 is preferably formed in a portion from the periphery of the penetrating part 10 to the penetrating part 10.
  • the inclined part 13 has the circumferential surface part 11 of the penetrating part 10 as an end part 13A, and indicates a portion inclined upward in a direction away from the end part 13A.
  • the inclined part 13 may be formed only on one side surface of the lid 1 as illustrated in Figs. 1B and 2A , or may be formed on both surfaces (the exposed surface 72 (non-opposing surface) and a surface (the opposing surface 73) facing the space 105 of the container 101) of the lid 1 as illustrated in Fig. 2B .
  • the inclined part 13 forms an inclined surface on the exposed surface 72 of the lid 1
  • the inclined part 13 forms an inclined surface on the opposing surface 73 side of the lid 1.
  • the density of the fibers 31A constituting the fiber sheet 31 in the inclined part 13 is higher at a position closer to an end part of the inclined part.
  • the density of the fibers 31A at the position P1 is preferably higher than the density of the fibers 31A at the position P2.
  • the inclined part 13 is formed in a shape inclined downward toward the penetrating part 10.
  • Such configuration of the inclined part and the fiber density in the inclined part is the same in the penetrating parts formed in the second to fourth embodiments to be described later.
  • the lid 1 according to the first embodiment can be manufactured, for example, as hereunder.
  • the fiber sheet 31 as a raw fabric sheet formed of a material corresponding to the material of the lid 1 is immersed in an immersion liquid (immersion step).
  • the immersion liquid is a liquid (resin-containing liquid) containing the resin material 32.
  • the resin-containing liquid is a mixed liquid of the resin material 32, water, and a non-aqueous solvent.
  • the possibility of improving the waterproof property of the lid 1 can be increased.
  • a step (drying step) of drying the fiber sheet 31 (fiber sheet 31 containing the immersion liquid) subjected to the immersion step is performed.
  • the fiber sheet 31 subjected to the drying step (fiber sheet 31 to which the resin material 32 is attached) is processed into a shape corresponding to the shape of the lid 1 to form the blank material 30.
  • the blank material 30 may be used as it is for the lid 1.
  • the penetrating part 10 is formed by forming the cut 8 in the blank material 30, whereby the lid 1 is formed.
  • examples of the resin material 32 contained in the immersion liquid include an acrylic resin, a polyolefin resin, etc., and a resin having biodegradability is preferable.
  • the non-aqueous solvent is not particularly limited as long as it can mix the resin material, and examples thereof include an alcohol-based solvent such as ethanol.
  • the water and the non-aqueous solvent contained in the fiber sheet 31 containing the immersion liquid may be substantially completely evaporated, or some moisture and non-aqueous solvent may remain in the fiber sheet 31.
  • the lid 1 since at least a part of the resin material 32 is attached to at least some of the fibers 31A forming the inside of the fiber sheet 31 constituting the lid 1, moisture permeation into the fibers 31A can be suppressed by the resin material 32. Furthermore, in where the sealing method is applied when the lid 1 is attached to the container 101, a space may be positioned in at least a part between the fibers 31A constituting the fiber sheet 31, so that the resin constituting the resin coating layer formed on the surface of the edge 103 of the container 101 can enter the space, and the bonded state between the resin coating layer and the lid 1 can be readily formed. In short, even though the nature of the resin forming the resin coating layer is insufficient in adhesiveness to the resin material 32, the container 101 and the lid 1 can be readily bonded by the sealing means.
  • Fig. 3A is a plan view schematically illustrating an example of a lid 1 according to the first modification of the first embodiment.
  • the weakened part 14 includes a plurality of penetrating parts 10 and at least one continuous part 15 formed between the end parts 12 of the at least two penetrating parts 10.
  • the weakened part 14 guides a position (separated position) where separation occurs when a force for lifting up or pushing down the weakened part 14 is applied to form the separated portion in the lid. That is, the position where separation occurs is formed substantially along the weakened part.
  • the layout of the weakened part 14 is not particularly limited, and may be determined according to conditions such as the function of the weakened part 14.
  • the continuous part 15 is formed at one place, and a total of four penetrating parts 10 are formed.
  • the penetrating part 10 is formed so as to radially extend in four different directions from the continuous part 15.
  • the penetrating parts 10 may extend in three directions in a direction away from the continuous part 15, or may extend in five or more directions.
  • the penetrating part 10 may extend in two directions in a direction away from the continuous part 15.
  • the weakened part 14 is formed in a cross shape, but may be formed in a C shape as illustrated in Fig. 4B .
  • the continuous part 15 may be formed at a plurality of places without being limited to one place.
  • the continuous part 15 is formed at three locations, and the penetrating parts 10 (a total of four penetrating parts 10) are formed in two directions from each of the continuous parts 15.
  • the plurality of penetrating parts 10 are formed of curved cuts 8 so as to have a shape that simulates substantially the letter C as a whole of the weakened part 14.
  • the position of the weakened part 14 is not particularly limited, but is preferably provided in the lid region corresponding part 5B. In this case, the separated position is formed in the lid region corresponding part 5B.
  • the continuous part 15 is not always have to be formed penetrative over the blank material 30 which forms the lid 1, and may be a non-cut, or may be a half-cut 16 obtained by cutting the blank material 30 in the thickness direction within a degree preventing a full penetrating the blank material 30 as illustrated in Fig. 12B.
  • Fig. 12B is a view for explaining an example of the half-cut 16.
  • the half-cut 16 is specified as a portion forming a half-cut structure in which the lid 1 is cut halfway in the thickness direction of the lid 1. In this regard, the half-cut 16 is not limited to a half of the thickness of the lid 1 in the thickness direction of the lid 1.
  • the half-cut 16 includes a structure in which a half or more of the thickness of the lid 1 is cut but preventing the full penetration of the lid 1, and a structure in which the lid 1 is cut in the thickness direction of the lid 1 to an extent less than a half of the thickness of the lid 1.
  • Fig. 3B is a plan view schematically illustrating an example of a lid 1 according to the second modification of the first embodiment.
  • the position and the shape of an extension 7 are not particularly limited, but in the example of Fig. 1A , the extension 7 is formed on an outer circumferential edge 50 of the lid region non-forming part 5C of the lid 1 (corresponding to an outer circumferential edge 2A of the base part 2 in the second embodiment to be described later), and the shape of the extension 7 is determined such that an outer circumferential edge 7A of the extension 7 has a mountain shape gently curved in a convex shape.
  • a mark, a character, etc. for indicating the container 101 corresponding to the lid 1 can be arranged on the extension 7.
  • characters such as S, M, and L are arranged on the extension 7 by printing or the like.
  • the lid 1 printed with the letter S is used.
  • the lid 1 printed with the letter M is used.
  • the lid 1 printed with the letter L is used.
  • the types of the container 101 and the lid 1 are respectively associated per type. Thereby, in a case where the lid 1 is joined to the container 101, it is possible to prevent a possibility from jointing by a wrong combination of size between the container 101 and the lid 1.
  • the extension 7 when the extension 7 is formed in the lid 1, the extension 7 can be used as a knob.
  • the lid 1 is not limited thereto, and the penetrating part 10 may form at least a part of the boundary between the opening edge of the small opening part and the outer circumferential edge of the small lid part as illustrated in Figs. 7A and 7B . That is, as illustrated in Figs. 7A and 7B , the lid 1 may include a base part having a small opening part having an opening area smaller than the opening 102 of the container 101, a small lid part that opens and closes the small opening part, and a hinge part that connects the base part and the small lid part.
  • An embodiment recited as above is referred to as a second embodiment. Fig.
  • FIG. 7A is a plan view illustrating an example of the lid 1 according to the second embodiment.
  • Fig. 7B is a cross-sectional view schematically illustrating a longitudinal cross section taken along the line D-D in Fig. 7A .
  • the second embodiment may be similar to the first embodiment in other points that the penetrating part 10 forms at least a part of the boundary between the opening edge of the small opening part and the outer circumferential edge of the small lid part.
  • the insertion port 19 already indicated in the first embodiment may be further formed.
  • the lid 1 according to the second embodiment includes a base part 2, a small lid part 3, and a hinge part 4.
  • the lid region corresponding part 5B of the lid 1 includes the base part 2, the small lid part 3, and the hinge part 4, and the lid region non-forming part 5C includes the base part 2.
  • the base part 2 is defined as a part having the joining region corresponding part 5A and forming a small opening part 6.
  • the base part 2 can be a portion that defines a basis of the variation on how high place the small lid part 3 is located as to be described later.
  • the base part 2 and the small lid part 3 form the exposed surface 72 of the lid 1 as shown in plan view of the lid 1.
  • the joining region corresponding part 5A corresponds to a portion forming the joining region R, and is formed in the base part 2.
  • the small opening part 6 is formed so as to penetrate the opposing surface 73 of the lid 1 with respect to the container 101 and the non-opposing surface (the exposed surface 72 of the lid 1) of the lid 1 with respect to the container 101.
  • the small opening part 6 is formed inside a portion corresponding to the joining region corresponding part 5A in plan view of the lid 1 so as to have an opening area smaller than that of the opening 102 of the container 101.
  • the small opening part 6 is provided to form an inlet/outlet of contents (for example, beverages, food and drink, etc.) in the space 105 of the container 101 while joining the lid 1 to the container 101.
  • the small opening part 6 forms an opening forming part 20 in combination with the small lid part 3 as describe later.
  • the opening forming part 20 is defined as a portion having the small opening part 6 and the small lid part 3.
  • the small opening part 6 is opened and closed as the small lid part 3 is displaced.
  • the opening forming part 20 is formed such that the small lid part 3 closes the small opening part 6 and the small lid part 3 is displaced to open the small opening part 6. Where the small lid part 3 is rotated so as to pull up the small lid part 3 with reference to the base part 2, the small opening part 6 is exposed and serves as an exposure port.
  • the opening forming part 20 combines the small opening part 6 and the small lid part 3 so that the space 105 of the container 101 can be visually recognized from the small opening part 6 when the small lid part 3 is pulled up in a state on the condition that the lid 1 is attached to the container 101.
  • the small opening part 6 serves as the exposure port, as describe later, the small opening part 6 can serve as a supply port for a liquid such as an additional beverage or a solid such as ice. Furthermore, in a case where a liquid such as a beverage is present in the container 101 (space 105), the small opening part 6 may be used as a straw or a spout for a beverage and so on.
  • the lid 1 is provided with a small lid part 3.
  • the small lid part 3 is formed so as to cover the small opening part 6 in an openable and closable manner.
  • the small lid part 3 is formed so as to be displaceable along with a pulled-up movement with respect to the base part 2 as describe later with reference to Fig. 9C , and the small opening part 6 is formed (opened) when the small lid part 3 is pulled up.
  • the shape of the small lid part 3 can be determined such that the outer circumferential contour shape of the small lid part 3 follows the shape of an opening edge 6A of the small opening part 6. In this case, where the small opening part 6 is closed by the small lid part 3, it readily brings the end surface of an outer circumferential edge 3A of the small lid part 3 into contact with the end surface of the opening edge 6A of the small opening part 6.
  • the small lid part 3 is provided inside (lid region corresponding part 5B) (center CT side) the joining region corresponding part 5A in plan view of the lid 1.
  • the small lid part 3 is displaced (rotated) so that the small lid part 3 is in a lifted-up movement.
  • the small lid part 3 is connected to the base part 2 by the hinge part 4.
  • the small opening part 6 is exposed as the small lid part 3 is lifted up with the hinge part 4 as a support shaft.
  • the small opening part 6 is exposed as described above. This is referred to as a status of the lid being opened. A status in which the small opening part 6 is covered with the small lid part 3 is referred to as a status of the lid closed.
  • the lid 1 even after the lid 1 enters the status of the lid being opened (after the small opening part 6 is exposed by raising the small lid part 3), the lid 1 can be even in the status of the lid closed again, and in a case where the lid 1 is in the status of the lid closed, the end surface of the opening edge 6A of the small opening part 6 of the base part 2 can face the end surface (outer circumferential end surface) of the outer circumferential edge 3A of the small lid part 3.
  • the lid 1 has the hinge part 4.
  • the hinge part 4 is substantially configured by a portion corresponding to a line segment connecting two base end parts 74 along the outer circumferential edge 3A of the small lid part 3, and corresponds to a boundary portion between the base part 2 and the small lid part 3.
  • the hinge part 4 is a portion that serves as a rotation shaft when the small lid part 3 rotates.
  • the small lid part 3 rotates, not only a case where the small lid part 3 rises from the base part 2 at a constant angle at a position of the hinge part 4, but also a case where the small lid part 3 rises from the hinge part 4 toward a front end edge 75 of the small lid part 3 while gradually curving is included.
  • the base part 2 is connected to the small lid part 3 at least at the hinge part 4.
  • the hinge part 4 does not have any particular structural limitation as long as it is a portion defined as a boundary between the base part 2 and the small lid part 3.
  • the hinge part 4 may have a perforated pattern or a half-cut, similar to a connecting formation 17 as describe later.
  • the small lid part 3 and the small opening part 6 may be separated (may come into a non-connected status), or the connecting formation 17 may be formed as describe later.
  • the penetrating part 10 is formed so as to separate the outer circumferential edge 3A of the small lid part 3 and the opening edge 6A of the small opening part 6.
  • the circumferential surface part 11 of the penetrating part 10 forms an end surface of the outer circumferential edge 3A of the small lid part 3 and an end surface of the opening edge 6A of the small opening part 6. Furthermore, the end part 12 of the penetrating part 10 is located at the base end part 74 of the hinge part 4. Since the structure of the penetrating part 10 is similar to that as described in the first embodiment, the details may be omitted here.
  • a formation (connecting formation 17) in which the opening edge 6A of the small opening part 6 of the base part 2 and the outer circumferential edge 3A of the small lid part 3 are connected as described above may be formed at the boundary position between the outer circumferential edge 3A of the small lid part 3 and the opening edge 6A of the small opening part 6.
  • the connecting formation 17 is preferably configured as a weakened part 14 which is a portion more fragile than the small lid part 3.
  • Fig. 12A is a view illustrating an example in a case where the connecting formation 17 is the weakened part 14.
  • the connecting formation 17 is the weakened part 14, the weakened part 14 can be broken (the continuous part 15 can be broken) in a case where the small lid part 3 rotates with respect to the base part 2 about the hinge part 4 as an axis. Furthermore, the small lid part 3 is raised with reference to the base part 2 while being separated from the base part 2 substantially along the connecting formation 17.
  • the weakened part 14 is formed by a combination of the penetrating part 10 and the continuous part 15 as described in the first modification of the first embodiment. Therefore, where the connecting formation 17 is the weakened part 14, the boundary position between the outer circumferential edge 3A of the small lid part 3 and the opening edge 6A of the small opening part 6 is formed by a combination of the penetrating part 10 and the continuous part 15.
  • the combination is a pattern (so-called perforated pattern) such that the continuous part 15 and the penetrating part 10 are alternately arranged along the longitudinal direction of the portion where the end surface of the opening edge 6A of the small opening part 6 and the end surface of the outer circumferential edge 3A of the small lid part 3 face each other.
  • the connecting formation 17 may be formed of the half-cut 16 only, for example, as illustrated in Fig. 12B without limiting in the perforated pattern. Since the half-cut 16 is the same as the half-cut 16 described in the first embodiment with Fig. 12B , the details may be omitted here.
  • the continuous part 15 may be the half-cut 16 as illustrated in Fig. 12B .
  • the penetrating part 10 may be formed as a vent part at a position different from the boundary position between the outer circumferential edge of the small lid part and the opening edge of the small opening part.
  • the connecting formation 17 is formed at the boundary position between the outer circumferential edge of the small lid part and the opening edge of the small opening part, and the connecting formation 17 is formed of the half-cut 16 only, the penetrating part 10 may be formed different in configuration from the connecting formation 17.
  • the penetrating part 10 may be formed at a boundary position between the outer circumferential edge of the small lid part and the opening edge of the small opening part, and at a position different from the boundary position.
  • at least the penetrating part may be partially formed at a boundary position between the outer circumferential edge of the small lid part and the opening edge of the small opening part.
  • the lid 1 according to the second embodiment can obtain the same effects as those of the first embodiment.
  • a knob part 21 may be provided in the small lid part 3.
  • the lid 1 as recited above is referred to as the first modification of the second embodiment.
  • Fig. 8A is a plan view schematically illustrating an example of a lid 1 according to the first modification of the second embodiment.
  • Fig. 8B is a cross-sectional view schematically illustrating a status of a longitudinal cross section taken along the line E-E in Fig. 8A .
  • lid 1 according to the first modification of the second embodiment may be similar to the above-described second embodiment except for the configuration in which the knob part 21 is provided in the small lid part 3, description of other configurations (base part 2, hinge part 4, etc.) except for the configuration in which the knob part 21 is provided in the small lid part 3 may be omitted.
  • the knob part 21 is provided on an upper surface side which is an exposed surface (the exposed surface 72 of the lid 1) side of the small lid part 3.
  • the knob part 21 is not particularly limited in configuration as long as the small lid part 3 can be rotated about the hinge part 4, but in the examples of Figs. 8A and 8B , a tab member 22 is provided as the knob part 21.
  • the tab member 22 has one end part 22A of the tab member 22 joined to the small lid part 3, and has other end part 22B of the tab member 22 as a free end.
  • a portion of the tab member 22 joined to the small lid part 3 is referred to as a tab joining part 23.
  • the shape and structure of the portion of the tab member 22 on the free end side are not particularly limited as long as the portion is formed in such a size and shape that the tab member 22 can be gripped by a human hand.
  • the material of the tab member 22 may be the same as the material of the blank material 30 described in the first embodiment, and may be the paper-based material.
  • a mounting position and a mounting direction of the tab member 22 in the small lid part 3 are not particularly limited, but in the examples of Figs. 8A and 8B , the tab member 22 is joined to the small lid part 3 at a position close to the tip of the small lid part 3 (that is, near the front end edge 75).
  • a method for joining the tab member 22 to the small lid part 3 that is, a method for forming the tab joining part 23
  • various methods such as ultrasonic joining, heat sealing, and joining with an adhesive can be exemplified.
  • ultrasonic joining is preferable from the viewpoint of ease of joining, strength of joining, etc. among the methods described above.
  • the formation position of the tab joining part 23 in the small lid part 3 is preferably a position shifted from the central portion of the small lid part 3 from the viewpoint of readily raising the small lid part 3 (rotating the small lid part 3) by lifting up the tab member 22.
  • the other end part 22B side (free end side) of the tab member 22 is disposed closer to the hinge part 4 side than the one end part 22A of the tab member 22.
  • the orientation of the tab member 22 may be an orientation other than the direction indicated in the example of Fig. 8A .
  • the tab member 22 may be disposed such that the other end part 22B side of the tab member 22 is located farther away from the hinge part 4 than the one end part 22A of the tab member 22.
  • the small lid part 3 can be easily pulled up.
  • a holding structure forming portion which is a portion forming a holding structure for holding the small lid part 3 in a state where the small lid part 3 is rotated with respect to the base part 2 with the hinge part 4 as an axis to open the small opening part 6 may be included.
  • the lid 1 having such a configuration is referred to as a second modification of the second embodiment.
  • Fig. 13A is a plan view schematically illustrating an example of a lid 1 according to the second modification of the second embodiment.
  • Fig. 13B is a cross-sectional view schematically illustrating a status of a longitudinal cross section taken along the line H-H in Fig. 13A .
  • the holding structure forming portion is not particularly limited in the configuration.
  • a claw part 24 and a receiving part 25 form the holding structure forming portion.
  • the claw part 24 may be a portion capable of being locked to the receiving part 25 as describe later by hooking, insertion, and so on.
  • the claw part 24 is provided on the tab member 22 as an example of the knob part 21.
  • the claw part 24 is formed by a cut formed in a contour shape such as a generally mountain shape at a predetermined position of the tab member 22.
  • the receiving part 25 is formed into which the claw part 24 can be engaged or inserted.
  • the receiving part 25 is also a slit formed by cutting at a predetermined position of the base part 2.
  • the receiving part 25 corresponds to the penetrating part 10.
  • the receiving part 25 is formed at a position capable of facing the claw part 24 when the tab member 22 is displaced so as to rotate the small lid part 3.
  • the knob part 21 is pulled up.
  • the tab member 22 is displaced so as to rotate the small lid part 3 until the claw part 24 of the small lid part 3 reaches a position facing the receiving part 25 or a position in the vicinity of the position.
  • the claw part 24 of the tab member 22 is hooked or inserted into the receiving part 25.
  • the holding structure forming portion includes the slit (penetrating part 10) as the receiving part 25 described above, but in a third modification of the second embodiment hereunder, the structure corresponding to the receiving part 25 is not limited to the slit.
  • Fig. 9A is a plan view schematically illustrating an example of a lid according to the first modification of the second embodiment.
  • Fig. 9B is a cross-sectional view schematically illustrating a longitudinal cross section taken along the line F-F in Fig. 9A .
  • Fig. 9A illustrates a case where the extension 7 is formed in the lid 1 according to the second modification of the second embodiment.
  • the extension 7 is defined on the outer circumferential edge 2A of the base part 2 such that the hinge part 4 is positioned between the front end edge 75 forming the tip of the small lid part 3 and the extension 7.
  • the position of the front end edge 75 of the small lid part 3 and the position of the extension 7 can be separated as much as possible.
  • the extension may also serve as the receiving part described in the second modification of the second embodiment.
  • the claw part 24 is formed on the knob part 21 (tab member 22 in Figs. 13A and 9A ), and the claw part 24 and the extension 7 form the holding structure forming portion.
  • the extension 7 is formed such that the outer circumferential edge 7A of the extension 7 can face the claw part 24 when the tab member 22 is displaced so as to rotate the small lid part 3.
  • Fig. 9C is a cross-sectional view for explaining an example of the holding structure.
  • the small opening part 6 is expected to use as a straw by forming the tip of the small opening part 6 (the front end edge 75 of the small lid part 3) close to the outer circumferential edge 2A of the lid 1, the size of the extension 7 can be reduced, and thereby it prevents the user's recognition from regarding the extension 7 as a knob for forming an outlet port. That is, it prevents the user action from lifting up the extension 7, tearing the lid 1 and using a toned-up hole formed thereby for a content outlet.
  • the stiffness of the blank material 30 is not too strong to bent the extension 7 slightly during the claw part 24 being hooked to the extension 7, and even where the tip of the claw part 24 enters the edge 103 of the container 101, the tip of the claw part 24 can be slid to the extension 7 in a direction of releasing the locking between the extension 7 and the claw part 24. Then, it is readily to form the holding structure with the tip of the claw part 24 being positioned outside the edge 103 of the container 101. By such a holding structure, even if a stain or dirty is created at the edge 103 of the container 101, such damage does not spread to the claw part 24 of the lid 1, and it makes it possible to keep good sanitary level.
  • the configuration of reducing the size of the extension 7 indicated in the third modification of the second embodiment as illustrated in Fig. 10 can also be applied to a lid using a sheet material in which a resin layer is formed on the surface of the fiber sheet 31 of at least one of the exposed surface 72 and the opposing surface 73, instead of the lid 1 having the blank material 30.
  • the lid 1 is the blank material 30 and the extension 7 is also formed of the blank material 30, it is more preferable in that the surface of the extension 7 can be easily roughened and slight bending is easily generated in the extension 7 as compared with the case of using the sheet material in which the resin layer is formed.
  • a window portion may be formed.
  • This embodiment is referred to as a third embodiment.
  • Fig. 5A is a plan view illustrating an example of the lid 1 according to the third embodiment.
  • Fig. 5B is a cross-sectional view schematically illustrating a longitudinal cross section taken along the line B-B of the lid 1 illustrated in Fig. 5A .
  • Examples of the synthetic resin and the natural resin include olefin-based resins such as polyethylene (PE) and polypropylene (PP), styrene-based resins such as polystyrene (PS), acryl-based resins such as polyacrylate and polymethacrylate, vinyl-based resins such as polyvinyl chloride (PVC) and polyvinyl acetate, polyamide-based resins, polyimide-based resins, polyester-based resins such as polyethylene terephthalate (PET), fluorine-based resins, polyether-based resins such as polycarbonate-based resins (PC), polyether ether ketone (PEEK) and polyether sulfone (PES), etc.
  • olefin-based resins such as polyethylene (PE) and polypropylene (PP)
  • styrene-based resins such as polystyrene (PS)
  • acryl-based resins such as polyacrylate and polymethacrylate
  • a biodegradable resin or the like is preferable from the viewpoint of reducing the environmental load.
  • the biodegradable resin include microorganism product-based biodegradable resins such as polyhydroxyalkanoate (PHA) and PHA-based copolymers; natural product-based biodegradable resin such as starch-based resin mainly composed of cellulose derivatives such as cellulose acetate or starch such as corn starch; lactic acid-based resins such as polylactic acid (PLA), a polylactic acid/polycaprolactone copolymer, and a polylactic acid/polyether copolymer, succinate-based resins such as polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), and polyethylene terephthalate succinate (PETS), chemically synthesized biodegradable resins such as polycaprolactone and polyvinyl alcohol (PVA), and, in addition, polyglycolic acid
  • PHA polyhydroxyalkanoate
  • the window sheet 42 is preferably excellent in water resistance, oil resistance, etc.
  • the window sheet 42 provided in the window part 40 forms a portion (bonded part 46) bonded along a portion of the blank material 30 corresponding to the periphery of the lid inner opening 41.
  • a method for bonding the window sheet 42 to a portion corresponding to the periphery of the lid inner opening 41 is not particularly limited.
  • an application portion may be formed by applying a hot melt adhesive between the periphery of the lid inner opening 41 and the window sheet 42, and the window sheet 42 may be bonded to a portion corresponding to the periphery of the lid inner opening 41 by heat sealing at the application portion to form the bonded part 46.
  • the window part 40 is provided with respect to the lid 1 according to the first embodiment. However, as illustrated in Fig.
  • the window part may be provided with respect to the lid 1 according to the second embodiment, or as illustrated in Figs. 11B and 11C , the window part may be provided with respect to the lid 1 according to a fourth embodiment as describe later.
  • Figs. 11A and 11B are plan views showing another example of the lid 1 according to the third embodiment
  • Fig. 11C is a cross-sectional view schematically illustrating a longitudinal cross section taken along the line G-G in Fig. 11B .
  • the configuration of the window part 40 indicated in the third embodiment can also be applied to a lid using a sheet material in which a resin layer is formed on the surface of the fiber sheet 31 of at least one of the exposed surface 72 and the opposing surface 73 instead of the lid 1 having the blank material 30.
  • the lid 1 is the blank material 30 when the bonded part 46 be formed between the window sheet 42 and the blank material 30
  • a raised part may be formed in the lid 1 according to the first to third embodiments, as illustrated in Figs. 6A, 6B , etc.
  • a raised part may be formed in the lid 1 according to the first to third embodiments. This embodiment is referred to as a fourth embodiment.
  • a raised part 43 is formed on the exposed surface 72 side of the lid 1, and is a portion (in the examples of Figs. 6A and 6B , a portion protruding to the +Z direction side with respect to the position of the joining region corresponding part 5A) protruding upward (+Z direction side) with respect to the outside of the raised part 43 (outside the base end of the raised part 43).
  • the raised part 43 is preferably provided inside from the inner fringe end of the joining region corresponding part 5A. That is, the raised part 43 may be formed on the overall region corresponding part 5B or may be provided on a part of the inside of the lid region corresponding part 5B.
  • a depressed part 44 is formed in a portion corresponding to the raised part 43 (a portion opposite) on a surface side (opposing surface 73 side) opposite to the exposed surface 72 of the lid 1.
  • a portion forming the raised part 43 is a convex structure portion in the emboss structure. Therefore, this makes it readily to maintain the lid 1 being attached with no coming into contact between the content and the lid 1 even though the content is stored upper than the opening 102 of the container 101, which is used as the container with a lid 150.
  • the upper end of the whipped cream can be housed within the space in the depressed part 44, and it prevents the upper end of the whipped cream from adhering to the opposing surface 73 of the lid 1.
  • the window part 40 is formed in a region including a tip end part 43A of the raised part 43 in terms of enabling an easy visual recognition for the overall space (depressed part 44) including the space 105 in the container 101.
  • the raised part 43 is formed in the lid 1, as illustrated in Figs. 6A and 6B , it is preferable that the outer circumferential edge 3A of the small lid part 3 and the hinge part 4 are formed along the base end part of the raised part 43. In this case, where the small lid part 3 is pulled up around the hinge part 4, the raised part 43 can be pulled up in its entire part.
  • the lid 1 according to the fourth embodiment can be manufactured, for example, as follows. As described in [1-2 Manufacturing Method] in the first embodiment, the immersion step and the drying step are performed. However, in the middle of the drying step or before the drying step (after the immersion step (that is, between the immersion step and the drying step)), a shaping process for shaping the fiber sheet 31 containing the immersion liquid is performed.
  • the shaping process can be exemplified by an embossing process. In the shaping process, a structure corresponding to the raised part 43 is formed (a structure corresponding to the depressed part 44 is also formed). After the shaping process and the drying step are performed, processing corresponding to the shape of the lid 1 is performed to form the blank material 30.
  • the water and the non-aqueous solvent contained in the fiber sheet 31 containing the immersion liquid may be substantially completely evaporated, or some moisture and non-aqueous solvent may remain in the fiber sheet. If some moisture or non-aqueous solvent remains in the fiber sheet, the shaping process may be applied after the drying step. However, in terms of good appearance of the raised part formed by the shaping step, the shaping process is preferably applied in the middle of the drying step or before the drying step.
  • the configuration of the raised part 43 (and the depressed part 44) described in the fourth embodiment can also be applied to a lid using a sheet material in which a resin layer is formed on the surface of the fiber sheet 31 of at least one of the exposed surface 72 and the opposing surface 73, instead of the lid 1 including the blank material 30.
  • the lid 1 is the blank material 30, it is more preferable in that the method for manufacturing the lid 1 according to the fourth embodiment can be readily applied, and the raised part 43 in the good appearance can be readily obtained.
  • the lid 1 is joined to the container 101, which is used as the container with a lid 150 as describe later to form a joining part 151.
  • the joining part 151 is a portion where the container 101 and the lid 1 are bonded (including adhesion) to each other, and the lid 1 and the container 101 are peeled off at the joining part 151 in order to separate the lid 1 and the container 101.
  • the lid 1 is not limited thereto, and the lid 1 may be fitted to the container 101 as described below.
  • a lid 201 according to a fifth embodiment includes a cover wall part 202 and a side wall part 203. As described later with reference to Fig. 21 etc., a lid 201 according to the fifth embodiment is formed so as to be in contact with a container 101 having an opening 102 formed at an upper end and an edge 103 serving as an upper end edge forming an outer periphery of the opening 102. With respect to the lid 201 and the container, which are in contact with each other, the lid 201 is formed so as to be fitted to a container having an opening 102 formed at an upper end and an edge 103 serving as an upper end edge forming an outer periphery of the opening 102. Fig.
  • FIG. 15A is a perspective view schematically illustrating an example of the lid according to the fifth embodiment.
  • Fig. 15B is a cross-sectional view schematically illustrating an example of the lid according to the fifth embodiment.
  • Fig. 15B illustrates a longitudinal cross section taken along the line N-N in Fig. 15A .
  • Fig. 21 is a cross-sectional view illustrating an example of the container with a lid 150 in which the lid 1 illustrated in Figs. 15A and 15B is joined to the container 101.
  • the line N-N is substantially passing immediately above an insertion port 219.
  • the lid 201 has preferably a bent part 204.
  • the bent part 204 is a portion connecting the cover wall part 202 and the side wall part 203, and in the example of Figs. 15A and 15B , the bent part 204 and the side wall part 203 are continuously (integrally) formed.
  • the cover wall part 202 is a portion that covers the opening 102 of the container 101 in a case where the lid 201 is attached (mount) to the container 101.
  • the shape of the cover wall part 202 may be determined according to the shape of the container 101, and examples thereof include a circular shape, an elliptical shape, a triangular shape, a rectangular shape, a polygonal shape, a chamfered shape, etc.
  • the bent part 204 is formed so as to surround the outer circumferential edge of the cover wall part 202, and is a portion forming a boundary between the cover wall part 202 and the side wall part 203.
  • the bent part 204 is formed such that the side wall part 203 faces a side wall 104 and the edge 103 of the container 101 in a case where the lid 201 is attached to the container 101.
  • the bent part 204 has a bent structure, but as described below, the bent part 204 is not limited to this.
  • portion forming the boundary between the cover wall part 202 and the side wall part 203 includes such conditions that the portion performs a boundary and that a boundary is defined in some area within the portion or an end part of the portion (if a part of the cover wall part 202 and/or the side wall part 203 also serves as the bent part 204).
  • the boundary between the cover wall part 202 and the side wall part 203 is defined at the center of the bent part 204.
  • bent part 204 has a curved structure (for example, Figs.
  • the bent part 204 is configured by a portion specified in a curved range, and a boundary between the cover wall part 202 and the side wall part 203 is defined at substantially the center of the bent part 204.
  • the side wall part 203 is formed in an annular shape along the outer circumferential end of the cover wall part 202.
  • the lid 201 according to the fifth embodiment can be obtained by integrally forming the cover wall part 202, the bent part 204, the side wall part 203, and the cover wall part 202 by integrally molding a blank material 250 for forming the lid 201.
  • the blank material 250 may be formed in the same manner as the blank material 30 in the description of the first to fourth embodiments. That is, the blank material 250 is formed of a sheet material including a fiber sheet 260 containing fibers formed of a paper-based material and a resin material.
  • the sheet material has a structure in which a resin material is attached to at least some of the fibers forming the inside of the fiber sheet 260.
  • the resin material may be similar to the resin materials described in the first to fourth embodiments.
  • the fiber sheet 260 may be similar to the fiber sheet 31 described in the first to fourth embodiments.
  • the lid 201 has a contact part 274 that comes into contact with the container 101 while the lid 201 is fitted to the container 101.
  • the contact part 274 is formed in a predetermined portion (first contact part 274A) of the side wall part 203.
  • the contact part 274 is preferably formed in a portion (second contact part 274B) of the cover wall part 202 corresponding to a predetermined region on an opposing surface 273. Since the contact part 274 is formed when the lid 201 is fitted to the container 101, it is possible to suppress the possibility that the contents of the container 101 leak to the outside.
  • the first contact portion 274A is preferably formed along almost the entire circumference of the outer surface end of the edge 103 of the container, and is preferably formed in an annular shape.
  • the second contact part 274B is preferably formed along almost the entire circumference of the upper end of the edge 103 of the container, and is preferably formed in an annular shape.
  • the first contact part 274A and the second contact part 274B may be separated from each other or connected to each other.
  • the same as the contact part 274 (including the first contact part 274A and the second contact part 274B) described in the fifth embodiment applies to the sixth embodiment, the seventh embodiment, and the eighth embodiment (sixth to eighth embodiments) as described below.
  • a penetrating part 210 is formed at a predetermined position of the cover wall part 202.
  • An insertion port 219 is formed as the penetrating part 210.
  • the penetrating part 210 is formed of a cut 208. In the example of Fig. 15 , the cut 208 is a cross cut.
  • the insertion port 219 and the penetrating part 210 may be formed in the same manner as the insertion port 19 and the penetrating part 10 described in the first embodiment.
  • the penetrating part 210 is a portion that penetrates the cover wall part 202 from an exposed surface 272 to the opposing surface 273.
  • the cross section of the fiber sheet 260 is exposed on a region forming the circumferential surface part of the penetrating part 210 (a region similar to the region of the circumferential surface part 11 described in the first embodiment). Furthermore, at least a part of the resin material is exposed on at least a part of the cross section of the fiber sheet 260 exposed on the circumferential surface part of the penetrating part 210.
  • the exposure of the cross section of the fiber sheet 260 and the exposure of the resin material indicated in the fifth embodiment are similar in the sixth to eighth embodiments as described below.
  • the blank material for forming the lid having the bent part (the lid having the side wall part, the bent part, and the cover wall part) is made of a paper-based material
  • the blank material is shaped into a lid-shape (three-dimensional shape)
  • many fine wrinkles, shirring, etc. are generated in the vicinity of the bent part and the side wall part.
  • a restoring force acts on the fibers constituting the lid after the shaping, and such fine wrinkles and shirring may return to the original shape due to the influence of a force applied to the lid where the lid is dealt with, and attached to a container, and so on.
  • the lid 201 according to the fifth embodiment it is possible to suppress the possibility of returning to the original shape after the shape deformation (shaping) when the blank material 250 is integrally molded.
  • the cover wall part 202 and the side wall part 203 may be formed of separate members (a first modification of the fifth embodiment).
  • the first modification of the fifth embodiment includes a case where a part of a member forming the cover wall part 202 forms a part of the side wall part 203, and where a part of a member forming the side wall part 203 forms a part of the cover wall part 202.
  • Figs. 18A and 18B illustrate an example of a case where a part of a member forming the cover wall part 202 forms a part of the side wall part 203.
  • a cover wall part forming member 222 having a first portion 231 for forming the cover wall part 202 and a side wall part forming member 223 for forming the side wall part 203 are prepared.
  • a joining margin 230 configured to be joined to the side wall part forming member 223 as a second portion 232 is extended to the outer end part (outer edge part) of the first portion 231 of the cover wall part forming member 222.
  • the bent part 204 is formed by joining the cover wall part forming member 222 and the side wall part forming member 223 by bonding the joining margin 230 of the cover wall part forming member 222 to the upper end part of the side wall part forming member 223.
  • the lid 201 is formed.
  • blank materials referred to as a first blank material 251 and a second blank material 252, respectively
  • a first blank material 251 and a second blank material 252 for forming the cover wall part forming member 222 and the side wall part forming member 223 can be used as illustrated in Figs. 19A, 19B , etc.
  • the first blank material 251 for forming the cover wall part forming member 222 a sheet material formed in a shape in which the joining margin 230 is matched with the shape of the cover wall part 202 may be used.
  • the second blank material 252 has a shape corresponding to the shape of the side wall part 203, and for example, in a case where the side wall part 203 has a shape reduced or increased in diameter toward the tip, a sheet material formed in a fan shape (formed in a partially fan shape) may be used.
  • the end edges 253 and 253 at both ends of the second blank material 252 can be joined to obtain the side wall part forming member 223 forming the side wall part 203.
  • At least one blank material selected from the group consisting of the first blank material 251 and the second blank material 252 may be formed in the same manner as the blank material 30 described above.
  • at least one blank material selected from the group consisting of the first blank material 251 and the second blank material 252 has the fiber sheet 260 containing fibers formed of a paper-based material.
  • the resin material is attached to at least some of the fibers forming the inside of the fiber sheet.
  • the first blank material and the second blank material have the fiber sheet 260 containing fibers formed of the paper-based material.
  • the side wall part 203 is formed to be downwardly tapered (toward the -Z direction) (the cross-sectional inner diameter is decreased (diameter reduction)), which is a preferable example, and the side wall part 203 may be formed to be downwardly increased (the cross-sectional inner diameter is increased (diameter expansion)).
  • the side wall part 203 may be formed so as not to be downwardly increased nor tapered (the cross-sectional inner diameter becomes constant), and the side wall part 203 may be formed so as to have a portion that is downwardly increased or tapered (a portion where the cross-sectional inner diameter varies) (the second modification of the fifth embodiment).
  • the second modification of the fifth embodiment is similar to the sixth to eighth embodiments as described below.
  • the cross section indicates a cut surface of the side wall part if the side wall part is supposed to cut along a plane with the vertical direction as a normal line.
  • the cross-sectional inner diameter indicates a diameter on the inner circumferential surface side if the cut surface (cross section) is substantially annular.
  • the cover wall part 202 of the lid 201 according to the fifth embodiment may be configured as described in the second to fourth embodiments (a third modification of the fifth embodiment).
  • the cover wall part 202 may have a configuration corresponding to the opening forming part 20 (corresponding to the second embodiment), may have a configuration corresponding to the window part 40 (corresponding to the third embodiment), may have a configuration corresponding to the raised part 43 (corresponding to the fourth embodiment), or may have these configurations concurrently by combination.
  • the third modification of the fifth embodiment is similar to the sixth to eighth embodiments as described below.
  • the configuration of the insertion port 219 may be omitted.
  • the bent part 204 may be comprised of a projecting part 226.
  • a protrusion part 225 may be formed at or near an end part (outer end part 228B) which is closer to the side wall part 203 in the two end parts of the projecting part 226 (inner end part 228A and outer end part 228B).
  • the projecting part 226 is structurally formed such that a predetermined region on the outer circumferential end side of the cover wall part 202 protrudes upward obliquely (projecting structure), but the projecting part 226 may project either upwardly or laterally (planar direction of the cover wall part 202).
  • An inner surface 226A on the side of the projecting part 226 is an immersed portion (immersion part 227).
  • the immersion part 227 has a shape corresponding to the shape of the projecting part 26. It is attainable depending on the shape of the mold when forming the lid 201 from the blank material 250.
  • the immersion part 227 is of a size which fits to the edge 103 of the container 101.
  • the edge 103 is substantially put into the immersion part 227 and an outer end part of the edge 103 (an outer circumferential surface part 111 of the edge 103 in the example of Fig. 20 ) can be brought into surface contact with the immersion part 227, and thus a firm attachment of the lid 201 at the edge 103 of the container 101 can be readily made.
  • a protrusion part 225 may be formed on the side wall part 203.
  • the protrusion part 225 is defined as a portion protruding inwardly (a direction toward centered CT, a direction from the outer circumferential surface 203B of the side wall part 203 toward the inner circumferential surface 203A) at a predetermined position of the side wall part 203.
  • the protrusion part 225 is preferably a protrusion line part formed linearly so as to surround the side wall part 203 on the inner circumferential surface thereof.
  • a recess part 224 may be formed so as to be positioned in alignment with the protruding structure formed on the outer circumferential surface 203B side of the side wall part 203.
  • a lid 201 according to the sixth embodiment is similar to that of the fifth embodiment in that the lid has the cover wall part 202 and the side wall part 203 and can be fitted to a container.
  • a lid 201A according to the sixth embodiment has a configuration in which a part of the side wall part 203 extends to the upper side and the lower side of the cover wall part 202.
  • the side wall part 203 has an annular (including tubular) shape and includes an upper wall 205 and a lower wall 206.
  • the lower wall 206 is a portion extending downward of the cover wall part 202, and the upper wall 205 is configured by a portion of the side wall part 203 excluding the lower wall 206.
  • the side wall part 203 is formed to be downwardly tapered. Furthermore, in the example of Figs. 16A and 16B , the penetrating part 210 is formed at a predetermined position of the cover wall part 202, but this is an example.
  • the lid 201 according to the sixth embodiment as in the fifth embodiment, it is possible to suppress the possibility of returning to the shape after the shape deformation (shaping) when the lid 201 is obtained by manufacturing the cover wall part forming member 222 and the side wall part forming member 223 from the blank material (first blank material, second blank material).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Cartons (AREA)
  • Laminated Bodies (AREA)
EP23811870.7A 2022-05-26 2023-05-25 Cover member, container with cover member, combination of cover member and container, and method for producing cover member Pending EP4512740A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022086457 2022-05-26
PCT/JP2023/019455 WO2023228998A1 (ja) 2022-05-26 2023-05-25 蓋体、蓋体付き容器、蓋体と容器の組み合わせ、及び蓋体の製造方法

Publications (1)

Publication Number Publication Date
EP4512740A1 true EP4512740A1 (en) 2025-02-26

Family

ID=88919413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23811870.7A Pending EP4512740A1 (en) 2022-05-26 2023-05-25 Cover member, container with cover member, combination of cover member and container, and method for producing cover member

Country Status (9)

Country Link
EP (1) EP4512740A1 (enrdf_load_stackoverflow)
JP (1) JPWO2023228998A1 (enrdf_load_stackoverflow)
KR (1) KR20250018478A (enrdf_load_stackoverflow)
CN (1) CN117460679A (enrdf_load_stackoverflow)
AU (1) AU2023275320A1 (enrdf_load_stackoverflow)
CO (1) CO2024016068A2 (enrdf_load_stackoverflow)
MX (1) MX2024014585A (enrdf_load_stackoverflow)
TW (2) TWM650974U (enrdf_load_stackoverflow)
WO (1) WO2023228998A1 (enrdf_load_stackoverflow)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163641A (en) * 1981-03-31 1982-10-07 Toyo Seikan Kaisha Ltd Vessel cover, which is made of plastic and easily unsealed
JPS608035U (ja) * 1983-06-27 1985-01-21 大日本印刷株式会社 包装材料
JP2001315835A (ja) * 2000-02-29 2001-11-13 Toppan Printing Co Ltd 有底容器の蓋体
JP4378441B2 (ja) * 2003-07-10 2009-12-09 島村 均 積層成形体の製造方法
JP4582302B2 (ja) * 2004-09-06 2010-11-17 凸版印刷株式会社 開封状態保持機能付き蓋材
JP2009057077A (ja) * 2007-08-31 2009-03-19 Toppan Printing Co Ltd 容器蓋材
JP5691153B2 (ja) * 2009-10-19 2015-04-01 凸版印刷株式会社 シール蓋を有するパッケージ
WO2016069755A1 (en) 2014-10-29 2016-05-06 Westrock Mwv, Llc Paperboard cup lids and methods for making the same
JP6657993B2 (ja) * 2016-01-22 2020-03-04 大日本印刷株式会社 蓋材用積層体、蓋材、分配包装容器、分配包装体、及び蓋材用積層体の製造方法

Also Published As

Publication number Publication date
TWM650974U (zh) 2024-02-01
CO2024016068A2 (es) 2024-12-30
TW202413222A (zh) 2024-04-01
CN117460679A (zh) 2024-01-26
KR20250018478A (ko) 2025-02-06
JPWO2023228998A1 (enrdf_load_stackoverflow) 2023-11-30
AU2023275320A1 (en) 2025-01-16
WO2023228998A1 (ja) 2023-11-30
MX2024014585A (es) 2025-01-09

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