CN117460679A

CN117460679A - Lid, container with lid, combination of lid and container, and method for manufacturing lid

Info

Publication number: CN117460679A
Application number: CN202380009763.XA
Authority: CN
Inventors: 林裕义
Original assignee: KY7 Ltd
Current assignee: KY7 Ltd
Priority date: 2022-05-26
Filing date: 2023-05-25
Publication date: 2024-01-26
Also published as: TWM650974U; WO2023228998A1; JPWO2023228998A1; TW202413222A

Abstract

Provided are a lid body, a container with a lid body, a combination of a lid body and a container, and a method for manufacturing a lid body, wherein penetration of moisture into fibers constituting the lid body can be suppressed, and the container and the lid body can be bonded by a sealing method even if the types of resins constituting a resin coating layer formed on the surface of the container are diversified. The lid is formed so as to be capable of being brought into contact with a container having a rim portion, and is formed from a blank having a fibrous sheet containing fibers formed from a paper-based raw material, and a resin material is attached to at least a part of the fibers forming the inside of the fibrous sheet.

Description

Lid, container with lid, combination of lid and container, and method for manufacturing lid

Technical Field

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.

Background

A method of accommodating a drink or the like (hereinafter also referred to as "contents") in a container having an opening formed at an upper end thereof and attaching a lid to provide the drink or the like in a state of sealing the container is widely performed.

As the lid to be attached to the container, there is a demand for using a lid using a paper-based material from the viewpoint of reducing environmental load. As a method of attaching a lid to a container, a method (sealing method) of joining the lid to an edge portion of the container forming an outer periphery of an upper end opening portion using a method such as hot pressing is known. As a method for taking out the content stored in the lid, a method for removing the lid and a method for providing a pull tab as in the lid described in patent document 1 are known. In the lid disclosed in patent document 1, when a user holds a tab and pulls it up, a bell-shaped or gourd-shaped hole is opened to form a drinking opening.

In addition, as a method of attaching a lid to a container, the following method is known: when the lid has a top surface portion, a curved portion, and a side wall portion, the lid is brought into contact with the peripheral edge portion of the container forming the upper end opening portion by fitting the curved portion or the combination of the top surface portion and the side wall portion to the peripheral edge portion of the container (fitting method). As a method of forming such a lid body, a method of forming a blank for forming the lid body by shaping is known.

Prior art literature

Patent literature

Patent document 1: international publication No. 2016/069755

Disclosure of Invention

In the technique described in patent document 1, when the cover is formed of a paper-based raw material, moisture permeates into fibers constituting the cover, and there is a concern that the rigidity of the cover is greatly impaired, and the strength of the cover is reduced. Accordingly, there is room for improvement in suppressing penetration of moisture into the fibers constituting the cover.

In addition, it is also conceivable to form a resin layer on the surface of the lid (on the surface facing the container or the like) in order to suppress penetration of moisture. However, a resin coating layer for waterproofing a container is usually formed on the surface of the container, and depending on the material of the resin material constituting the resin layer, there is a concern that the adhesion with the resin constituting the resin coating layer is impaired, and it is difficult to adhere the container to the lid body by a sealing method. Therefore, there is room for improvement in terms of being able to adhere the container and the lid body by the sealing method even if the types of resins constituting the resin coating layer formed on the surface of the container are diversified.

In addition, when the cover is formed of a paper-based material, when the cover is formed into a top surface portion, a curved portion, and a side wall portion by shaping a blank, there is a possibility that shape recovery occurs by a restoring force of the paper-based material after the side wall portion, the curved portion, and the like are formed. When the shape recovery occurs in the bent portion or the like, even if the lid is fitted to the container, the contact between the lid and the container is relaxed, a gap between the lid and the container is likely to occur, and there is a fear that the content of the container falls from the gap.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a lid body, a container with a lid body, a combination of a lid body and a container, and a method for manufacturing a lid body, which can suppress penetration of moisture into fibers constituting the lid body, and can adhere the container to the lid body by a sealing method even if the types of resins constituting a resin coating layer formed on the surface of the container are diversified. Further, another object of the present invention is to provide a lid body, a container with a lid body, a combination of a lid body and a container, and a method for manufacturing a lid body, which can suppress shape recovery after shaping of a blank.

The present invention is based on the following aspects (1) to (21).

(1) A lid body is formed so as to be capable of being brought into contact with a container having an edge portion, and is formed from a blank having a fibrous sheet including fibers formed from a paper-based raw material, and a resin material is attached to at least a part of the fibers forming the inside of the fibrous sheet.

(2) The lid body according to the above (1), wherein the lid body has a joint region corresponding portion corresponding to a region joined to the container along the edge portion of the container, and a lid region corresponding portion formed of a portion located inside with respect to the joint region corresponding portion, and the resin material is attached to the fibers forming at least a part of the inside of the fiber sheet at least in a portion corresponding to the joint region corresponding portion.

(3) The cover according to the above (2), wherein the cover includes a penetration portion cut from one surface to the other surface of the preform, and the fiber sheet has a cross section exposed at a peripheral surface portion of the penetration portion and the resin material is exposed at least a part of the cross section.

(4) The cover according to the above (3), wherein the cover has an inclined portion which is inclined upward in a direction away from the end portion with the peripheral surface portion of the through portion being an end portion.

(5) The cover according to the above (4), wherein the density of the fibers constituting the fiber sheet in the inclined portion increases as the cover approaches the end portion of the inclined portion.

(6) The lid according to the above (3), wherein the lid region corresponding portion is provided with a weakened portion for guiding the cutting position in the lid region corresponding portion, and the weakened portion has a plurality of the through portions and at least one continuous portion formed between at least two of the through portions.

(7) The cover according to the above (6), wherein the continuous portion has a half-cut structure.

(8) The lid according to the above (6), wherein the weakened portion has a plurality of penetrating portions formed radially around the continuous portion.

(9) The lid according to the above (3), wherein the lid region corresponding portion includes: a base portion having a small opening portion having an opening area smaller than an opening portion surrounded by the rim portion of the container; a small cover part for opening and closing the small opening part; and a hinge portion connecting the base portion and the small lid portion, wherein the small lid portion is configured to be rotatable about the hinge portion with respect to the base portion, and at least a part of the penetrating portion is formed at a boundary position between an outer peripheral edge of the small lid portion and the opening edge of the small opening portion.

(10) The cap according to (9), wherein a grip portion is provided on the upper surface side of the small cap portion.

(11) The lid according to the above (10), wherein the grip portion has a tab member, and the tab member is joined to the upper surface side of the small lid portion.

(12) The lid according to the above (9), wherein the lid has a holding structure for holding the small lid portion in a state where the small lid portion is turned about the hinge portion with respect to the base portion to open the small opening portion.

(13) The lid according to (9) above, wherein an extension portion is formed on an outer peripheral edge of the base portion, and the base portion and the extension portion are integrally formed from the blank.

(14) The lid according to the above (13), wherein the hinge portion is formed between the extension portion and the tip end of the small lid portion.

(15) The lid according to the above (9), wherein the lid has a holding structure for holding the small lid portion in a state in which the small lid portion is turned about the hinge portion with respect to the base portion to open the small opening portion, a pinching portion is provided on an upper surface side of the small lid portion, a claw portion is provided on the pinching portion, an extension portion is formed on an outer peripheral edge of the base portion, and the extension portion and the receiving portion form the holding structure.

(16) The cap according to (1), wherein the cap is formed with a raised portion.

(17) The cover according to the above (1), wherein at least a part of the resin material is impregnated between at least a part of the fibers.

(18) A container with a lid, comprising the lid of (1) above and the container having the rim, wherein the container with a lid is formed by joining the lid to the container.

(19) A combination of a lid and a container, comprising the lid of (1) above and the container having the rim.

(20) A method of manufacturing a cover, comprising: an impregnation step of impregnating the fiber sheet with an impregnating solution containing a resin material; and a drying step of drying the fiber sheet containing the impregnating solution.

(21) The method for producing a cover according to (20) above, wherein a shaping process for shaping the fiber sheet containing the impregnating solution is performed during or before the drying step.

Effects of the invention

According to the present invention, it is possible to provide a lid body, a container with a lid body, a combination of a lid body and a container, and a method for manufacturing a lid body, which can suppress penetration of moisture into fibers constituting the lid body, and can bond the container to the lid body by a sealing method even if the types of resins constituting the resin coating layer formed on the surface of the container are diversified. Further, it is possible to provide a lid body, a container with a lid body, a combination of a lid body and a container, and a method for manufacturing a lid body, which can suppress restoration of the shape after shaping of a blank when the lid body is formed by shaping of the blank.

Drawings

Fig. 1A is a plan view showing an example of the lid of embodiment 1. Fig. 1B is a cross-sectional view schematically showing a state of a longitudinal section of the line A-A of fig. 1A. Fig. 1C is a cross-sectional view showing a part of the peripheral surface portion of the penetration portion.

Fig. 2A and 2B are cross-sectional views showing an example of the inclined portion of the lid body according to embodiment 1.

Fig. 3A is a plan view showing an example of the cover of modification 1 of embodiment 1. Fig. 3B is a plan view showing an example of the cover of modification 2 of embodiment 1.

Fig. 4A and 4B are plan views showing another example of the lid body of embodiment 1.

Fig. 5A is a plan view showing an example of the lid of embodiment 3. Fig. 5B is a cross-sectional view schematically showing a state of a vertical section along line B-B of fig. 5A.

Fig. 6A is a plan view showing an example of the lid of embodiment 4. Fig. 6B is a cross-sectional view schematically showing a state of a vertical section along line C-C of fig. 6A.

Fig. 7A is a plan view showing an example of the lid of embodiment 2. Fig. 7B is a cross-sectional view schematically showing a state of a vertical section along line D-D of fig. 7A.

Fig. 8A is a plan view showing an example of a cover according to modification 1 of embodiment 2. Fig. 8B is a cross-sectional view schematically showing a state of a vertical section along line E-E of fig. 8A.

Fig. 9A is a plan view showing an example of the cover of modification 3 of embodiment 2. Fig. 9B is a cross-sectional view schematically showing a state of a vertical section of the F-F line in fig. 9A. Fig. 9C is a cross-sectional view schematically illustrating one embodiment of a retaining configuration.

Fig. 10 is a plan view showing another example of the cover of modification 3 of embodiment 2.

Fig. 11A and 11B are plan views showing another example of the lid body according to embodiment 3. Fig. 11C is a cross-sectional view schematically showing a state of a G-G longitudinal section of fig. 11B.

Fig. 12A is a plan view showing an example of the connection structure of the lid according to embodiment 3. Fig. 12B is a cross-sectional view schematically showing the half-cut portion.

Fig. 13A is a plan view showing an example of a cover according to modification 2 of embodiment 2. Fig. 13B is a cross-sectional view schematically showing a state of a vertical section along H-H line of fig. 13A.

Fig. 14A is a plan view showing an embodiment of the container with a lid. Fig. 14B is a cross-sectional view schematically showing a state of a longitudinal section of the line I-I of fig. 14A.

Fig. 15A is a perspective view showing an example of the lid according to embodiment 5. Fig. 15B is a cross-sectional view schematically showing a state of an N-N longitudinal section of fig. 15A.

Fig. 16A is a perspective view showing an example of the lid of embodiment 6. Fig. 16B is a cross-sectional view schematically showing a state of a vertical section of the J-J line in fig. 16A.

Fig. 17A is a perspective view showing an example of the cover of embodiment 7. Fig. 17B is a cross-sectional view schematically showing a state of a vertical section on the line K-K in fig. 17A.

Fig. 18A is a plan view showing an example of the cover of modification 1 of embodiment 5. Fig. 18B is a cross-sectional view schematically showing a state of the L-L longitudinal section of fig. 18 A8.

Fig. 19A and 19B are plan views showing an example of a blank for the lid body according to modification 1 of embodiment 5.

Fig. 20A is a plan view showing an example of the cover of modification 4 of embodiment 5. Fig. 20B is a cross-sectional view schematically showing a state of a vertical section along the line M-M of fig. 20A.

Fig. 21 is a cross-sectional view showing one embodiment of the capped container.

Detailed Description

The lid of the present invention will be described in detail below with reference to the drawings. The lid of the present invention is described by taking as an example a lid for use in a container (cup) for containing various beverages such as a coffee cup, but is not limited to a lid for a container for containing beverages, and can be applied to a lid for a container for containing foods other than beverages. The lid of the present invention can be applied to a container that can house various items other than food and drink, for example, components such as bolts and nuts. The lid of the present invention will be described below with reference to an example of a lid having a circular shape in plan view, but the shape of the lid is not limited to a circular shape in plan view, and the lid can be applied to various shapes other than a polygonal shape such as an elliptical shape, a rectangular shape, a triangular shape, etc., a rounded rectangular shape, a chamfered polygonal shape, etc.

Hereinafter, embodiment 1, embodiment 2, embodiment 3, embodiment 4, embodiment 5, embodiment 6, embodiment 7, embodiment 8 and application examples related to the present invention will be described in order with reference to the drawings. In the present specification and the drawings, the same reference numerals are given to structures having substantially the same functional constitution, and repetitive description thereof will be omitted.

The following description is a preferred embodiment of the present invention, and the present invention is not limited to the embodiments and the like. In the following description, the directions of the front-rear, left-right, up-down, and the like, and the directions of the horizontal plane are shown in consideration of convenience of description, but the content of the present invention is not limited to these directions. In the examples of fig. 1 to 21, the Z-axis direction is set to the up-down direction (the upper side is the +z direction, the lower side is the-Z direction), the X-axis direction is set to the front-back direction (the rear side is the +x direction, the front side is the-X direction), directions along the X-axis and the Y-axis orthogonal to each other, which are determined on a plane normal to the Z-axis direction, are set to the X-axis direction and the Y-axis direction, and the XY plane, which is the plane in which the X-axis and the Y-axis are located, is set to the horizontal plane, based on these descriptions. The relative size ratios such as the sizes shown in the respective figures of fig. 1 to 21 are described for convenience, and the actual size ratio is not limited unless otherwise specified.

[ embodiment 1 ]

[1-1 Structure ]

As will be described later with reference to fig. 14A and 14B, the lid 1 of embodiment 1 is formed so as to be able to contact with a container 101, and the container 101 has an opening 102 formed at the upper end and an edge 103 serving as the upper end edge forming the outer periphery of the opening 102. As shown in fig. 14A and 14B, the lid 1 is formed so as to be capable of being joined to a container 101 having an opening 102 (an opening 102 formed by a portion surrounded by an edge 103) formed at the upper end and an edge 103 forming the upper end edge of the outer periphery of the opening 102, in a state where the lid 1 is in contact with the container. Fig. 14A and 14B are perspective and cross-sectional views showing an example of a container 150 with a lid obtained by joining the lid 1 shown in fig. 1A, 1B, and 1C to the container 101. The cover 1 can be used by being joined along the edge 103. In the lid 1, a region to be joined to the edge 103 in a plan view of the lid 1 is referred to as a joining region R. Fig. 1A is a plan view showing an embodiment of the cover 1. Fig. 1B is a cross-sectional view schematically showing a longitudinal section of the line A-A of fig. 1A. Fig. 1C is a diagram showing a state in which a part of the peripheral surface portion 11 of the penetrating portion 10 described later is enlarged. Further, as the container 101, a container having flexibility at the edge 103 of the opening 102 is more preferably used. However, these contents do not prohibit the container 101 from being a container having low flexibility or hardly finding flexibility, such as a container made of metal.

In the example of fig. 1A, the joint 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.

(blank)

The cover 1 is formed from a blank 30. The blank 30 is obtained by processing a sheet made of a material corresponding to the material of the lid body 1 into a shape corresponding to the shape of the lid body 1. The formation of the lid body 1 from the blank 30 is not limited to the case where the lid body 1 is formed only from the blank 30, and includes a case where the lid body 1 has a structure in which a member such as the tab member 22 is attached to the blank 30, and a case where the lid body 1 is subjected to various processing such as shaping processing (embossing processing or the like) on the blank 30.

(Material of blank)

The blank 30 is formed of a sheet material having a fiber sheet 31 and a resin material 32, wherein the fiber sheet 31 has fibers containing a paper-based raw material. In the case of the lid body 1 of embodiment 1 shown in fig. 1A, as shown in fig. 1C, the sheet forming the blank 30 has a structure in which a resin material 32 is attached to at least a part of the fibers 31A forming the inside of the fiber sheet 31. The preform 30 has a structure in which, like the sheet material, at least a part of the fibers 31A forming the inside of the fiber sheet 31 are made to contain the resin material 32.

(fiber sheet comprising paper-based Material)

Examples of the fibrous sheet 31 containing a paper-based raw material include so-called papers in which a slurry of the fibrous raw material is formed into a sheet by being drawn onto a wire and dried or press-dried, and so-called air-laid sheets in which a fiber of a split fibrous raw material such as crushed pulp obtained by crushing a raw material sheet composed of pulp-based fibers or the like by a crusher is deposited with an air stream, and fibers of the fibrous deposited body are fixed to each other by a binder, and so-called papers in which plant fibers and other fibers are adhered to each other are produced. The fibrous sheet containing the paper-based raw material includes a fibrous sheet having a laminated structure obtained by laminating a plurality of papers as described above. The fiber sheet 31 includes a sheet material having chemical fibers, fibers having functions such as water resistance, metal fibers, glass fibers, and other fibers than pulp, in addition to paper raw materials.

The fiber sheet 31 may be composed of only the fibers 31A (only the entangled structure of the fibers 31A), may have a structure in which a plurality of the fibers 31A are crosslinked by a crosslinking agent or the like, and may contain other additives than a resin material, which will be described later. In the fiber sheet 31, the plurality of fibers 31A are crosslinked with each other by the crosslinking agent, so that the shape of the fiber sheet 31 is stabilized, and it is difficult to form a defibrated state.

(fiber)

The fibers 31A constituting the fiber sheet 31 may be formed of one unit fiber, or may have a structure in which a plurality of unit fibers are entangled, and any fiber having a structure may be included in the fiber sheet 31. The fiber sheet 31 is preferably formed in a state in which a plurality of fibers having such a configuration are further entangled.

(paper-based raw Material)

The paper-based raw material may be a raw material containing fibers such as natural fibers, synthetic fibers, and recycled fibers other than pulp, but the pulp preferably contains 50 mass% or more, more preferably 70 mass% or more, still more preferably 80 mass% or more, and particularly preferably 100 mass% of pulp. As the paper-based raw material, a composite material of a raw material such as a wood-based raw material such as nonwoven fabric or wood chips, and a raw material such as aluminum foil may be used, and when the composite material is used, it is preferable to contain 50 mass% or more of pulp, and particularly preferably 80 mass% or more of pulp in the entire composite material. The higher the pulp content, the more readily the paper-based raw material is biodegraded, and is therefore preferable.

(resin Material)

The resin material 32 attached to the fibers 31A is not particularly limited, and synthetic resins, natural resins, and the like can be exemplified. Examples of the synthetic resin include an olefin resin such as Polyethylene (PE) and polypropylene (PP), a styrene resin such as Polystyrene (PS), an acrylic resin such as polyacrylate and polymethacrylate, a vinyl resin such as polyvinyl chloride (PVC) and polyvinyl acetate, a polyamide resin, a polyimide resin, a polyester resin such as polyethylene terephthalate (PET), a fluorine resin, a polyether resin such as polycarbonate resin (PC), polyether ether ketone (PEEK) and Polyether Sulfone (PEs), and a synthetic polymer such as a phenolic resin, a urea resin, a melamine resin, an epoxy resin, a polyurethane resin, a silicone resin, a polyacetal resin, a polysulfone resin, a thermosetting resin such as polyetherimide resin, and poly (p-xylylene butylene glycol) (PBT), a polyvinyl alcohol (PVA), an ethylene-vinyl acetate copolymer resin (EVA), a polyvinyl alcohol derivative, and a polymer or copolymer of an unsaturated carboxylic acid or a salt thereof.

Among various resins, the resin material 32 is preferably a biodegradable resin having less environmental pollution. Examples of the biodegradable resin include biodegradable resins of a microorganism production system such as Polyhydroxyalkanoate (PHA) and PHA-based copolymers; cellulose derivatives such as cellulose acetate and natural biodegradable resins such as starch resins containing starch such as corn starch as a main raw material; lactic acid resins such as polylactic acid (PLA), polylactic acid/polycaprolactone copolymer, polylactic acid/polyether copolymer, etc., succinic acid resins such as polybutylene succinate (PBS), polybutylene succinate-adipate (PBSA), polyethylene terephthalate succinate (polyethylene terephthalate succinate: PETS), etc., chemically synthesized biodegradable resins such as polycaprolactone, polyvinyl alcohol (PVA), etc., polysaccharide derivatives such as carboxymethyl cellulose (CMC), carboxyethyl cellulose, carboxymethylated starch or salts thereof, starch, methyl cellulose, ethyl cellulose, nitrocellulose, cellulose acetate, etc., natural polysaccharides such as guar gum, tertagatose, xanthan gum, sodium alginate, carrageenan, gum arabic, gelatin, casein, etc., polyglycolic acid (PGA), polybutylene terephthalate-adipate, biodegradable polyolefin (commercial surface: biorecover, trade name; craDrop, etc.).

(Structure for attaching resin Material)

At least a part of the resin material 32 is attached to at least a part of the fibers 31A forming the inside of the fiber sheet 31. The case where the resin material 32 is attached to the fiber 31A includes the case where the resin material 32 is attached to the surface of the fiber 31A and the case where the resin material 32 is impregnated into the fiber 31A. In addition, when the fibers 31A constituting the fiber sheet 31 include fibers such as natural fibers, synthetic fibers, and regenerated fibers other than pulp, at least a part of the resin material 32 adheres to the fibers formed of pulp among the fibers 31A. That is, in the cover 1, at least a part of the resin material 32 is preferably attached to the fiber formed of pulp among the fibers 31A. However, this does not prohibit at least a part of the resin material 32 from adhering to the fibers such as natural fibers, synthetic fibers, regenerated fibers, and the like other than pulp in the fibers 31A.

The resin material 32 may be filled in at least a part of the space (gap space) formed between the fibers 31A constituting the fiber sheet 31 (that is, may be formed in a state where at least a part of the fibers 31A are impregnated with the resin material 32), or the gap space may be substantially occupied by the resin material 32.

The lid body 1 has a joint region corresponding portion 5A and a lid region corresponding portion 5B.

(junction region correspondence portion)

The joining region corresponding portion 5A is a portion corresponding to a region of the lid body 1 joined to the container 101 along the edge 103 of the container 101. That is, the joining region corresponding portion 5A is a portion of the lid body 1 corresponding to the joining region R (a region facing the edge 103 of the container 101 and joined to the container 101). The joint region corresponding portion 5A is a portion of the lid 1 that forms a joint 151 between the lid 1 and the container 101 in the lid-equipped container 150. Specifically, in a plan view of the lid 1 (in the example of fig. 1A, the Z-axis direction (vertical direction) is defined as the viewing direction), the portion where the joint region R is formed is defined as the joint region corresponding portion 5A. The joint region corresponding portion 5A is generally formed in a ring shape as shown in fig. 1A. In particular, as shown in fig. 1A, when the edge 103 of the container 101 is formed in a substantially annular shape, the joint region R is formed in a substantially annular shape, and the joint region corresponding portion 5A is also formed in a substantially annular shape in a plan view of the lid body 1. The outer edge of the joint region corresponding portion 5A is determined according to the position of the outer edge of the joint region R. The outer edge of the joining region corresponding portion 5A may be located at the outer peripheral edge of the lid body 1, or may be located inside the outer peripheral edge of the lid body 1 as shown in the example of fig. 1A. When the joint region R between the lid 1 and the container 101 is not continuously formed, a portion facing the edge 103 and sandwiched between the adjacent joint regions R is also included in a joint region corresponding portion 5A described later.

In the cover 1 shown in the example of fig. 1A, the resin material 32 is attached to the fibers 31A forming at least a part of the inside of the fiber sheet 31 in the portion corresponding to the joint region corresponding portion 5A.

(cover region correspondence portion)

The lid region corresponding portion 5B is a portion of the lid body 1 located inside with respect to the joint region corresponding portion 5A. That is, the lid region corresponding portion 5B is a portion located inward of the inner edge end of the joint region corresponding portion 5A, and the outer peripheral end of the lid region corresponding portion 5B is common to the inner edge end of the joint region corresponding portion 5A. The lid region corresponding portion 5B is a portion of the lidded container 150 that covers the opening 102. The portion covering the opening 102 includes a portion covering at least a part of the opening 102, and includes a case where a window is formed in a part as described in embodiment 3, a case where a small opening is formed as described in embodiment 2, and the like. As shown in the example of fig. 1, a portion of the lid body 1 located outside the outer peripheral end of the lid region corresponding portion 5B is referred to as a lid region non-forming portion 5C (in embodiment 2 described later, the lid region non-forming portion 5C corresponds to a portion of the base 2 located outside the inner edge end of the joint region corresponding portion 5A).

(penetration portion)

In the lid 1, the penetration portion 10 is preferably formed at least in the lid region corresponding portion 5B. The penetration portion 10 has a structure (penetration structure) that cuts from one surface to the other surface of the blank 30 in the up-down direction (thickness direction, Z-axis direction), and is a so-called cut portion 8. The penetration portion 10 has a peripheral portion 11 and an end portion 12. The peripheral portion 11 extends in the longitudinal direction of the penetration portion 10, and the end portion 12 is formed at the cut-in end.

When the penetrating portion 10 is formed in the lid 1, the penetrating portion 10 can be made to function as an exhaust portion. Here, the exhaust portion means a portion that can pass gas from one surface side to the other surface side of the lid body 1 (from the opposite surface 73 side to the exposed surface 72 side). The penetrating portion 10 may function as an exhaust portion as well as other functions. For example, when the lid 1 is used for the lidded container 150, the penetration portion 10 may function as the insertion port 19 of the insertion member or a portion constituting the insertion port 19 from the outside of the lidded container 150 toward the inside (space portion 105) of the container 101. Fig. 1A shows an example in which the lid 1 has a penetrating portion 10, and the penetrating portion 10 is formed so as to function as the insertion port 19. For example, as a member that can be inserted from the insertion port 19, a pipette or the like can be exemplified. The penetrating portion 10 shown in the example of fig. 1A can also function as an exhaust portion as described above.

(shape of penetration portion)

The shape of the penetration portion 10 is not particularly limited as long as it can be formed by cutting. For example, in the example of fig. 1A, a cut portion 8 is formed in the lid 1 so as to cut the blank 30 in a cross shape in the up-down direction, and the cut portion 8 forms a penetration portion 10. The through portion 10 doubles as the insertion port 19 as described above. Note that this is an example, and the shape of the cut-in portion 8 forming the through portion 10 is not limited to a cross shape as long as it can be used as the insertion port 19, and may be a C-shape as illustrated in fig. 4A and 4B, or may be a tongue shape or the like. Fig. 4A and 4B are plan views schematically showing another embodiment in which the lid 1 has the insertion port 19 as the penetration portion 10.

(peripheral portion of penetration portion)

In the lid 1, as shown in fig. 1C, the cross section of the fiber sheet 31 is exposed in the region where the peripheral surface portion 11 of the penetration portion 10 is formed (the region of the peripheral surface portion 11). At this time, at least a part of the resin material 32 is exposed at the peripheral surface portion 11, that is, at least a part of the cross section of the fiber sheet 31. As shown in fig. 1C, the resin material 32 is at least partially exposed at the peripheral surface portion 11, and a case where a part of the resin material 32 faces a part of the area of the peripheral surface portion 11 (the cross-sectional area of the fiber sheet 31) and a case where a part of the resin material 32 faces the entire area of the peripheral surface portion 11 (the entire area of the cross-section of the fiber sheet 31) can be cited. In the example of fig. 1C, a case is illustrated in which at least a portion of the fiber 31A is exposed in the cross section at the peripheral surface portion 11. However, this does not prohibit the cross section of at least a part of the fibers 31A at the peripheral surface portion 11 from being exposed, and does not prohibit the side surfaces of the fibers 31A from being exposed.

(inclined portion)

When the penetrating portion 10 is formed in the cover 1, the inclined portion 13 is preferably formed at a portion from the periphery of the penetrating portion 10 to the penetrating portion 10. The inclined portion 13 is a portion that is inclined upward in a direction away from the end portion 13A with the peripheral portion 11 of the through portion 10 being the end portion 13A. The inclined portion 13 may be formed only on one surface side of the lid 1 as shown in fig. 1B and 2A, or may be formed on both surfaces (the exposed surface 72 (non-opposing surface) and the surface facing the space portion 105 side of the container 101 (opposing surface 73)) of the lid 1 as shown in fig. 2B. In fig. 1B, the inclined portion 13 is formed with an inclined surface on the exposed surface 72 side of the cover 1, and in fig. 2A, the inclined portion 13 is formed with an inclined surface on the opposite surface 73 side of the cover 1.

(density of fibers in inclined portion)

The closer to the end of the inclined portion in the lid 1, the higher the density of the fibers 31A constituting the fiber sheet 31 in the inclined portion 13. For example, as shown in fig. 1B, 2A, and 2B, when a position P1 near the end 13A of the inclined portion 13 and a position P2 farther from the end 13A than the position P1 are selected, the fiber sheet 31 preferably has a higher density of the fibers 31A at the position P1 than the fibers 31A at the position P2. Such a structure can be realized by applying a stronger pressing force to a position closer to the peripheral surface portion 11 of the penetration portion 10 when the penetration portion 10 is formed. In this case, as shown in fig. 1B, 2A, and 2B, the inclined portion 13 is formed in a shape inclined downward toward the penetrating portion 10. The same applies to the inclined portion and the structure of the density of the fibers in the inclined portion in the penetrating portion formed in embodiments 2 to 4 described later.

[1-2 Process for producing the same ]

The lid 1 of embodiment 1 can be manufactured as follows, for example. The fiber sheet 31 as a rolled sheet formed of a material corresponding to the material of the cover 1 is immersed in an immersion liquid (immersion step). The impregnating liquid is a liquid (resin-containing liquid) containing the resin material 32. In the example described here, the resin-containing liquid is a mixed liquid of the resin material 32, water, and a nonaqueous solvent, for example. When the resin material 32 is contained in the cover 1, the possibility of improving the water repellency of the cover 1 can be improved. After the impregnation step, a step (drying step) of drying the fiber sheet 31 (the fiber sheet 31 containing the impregnation liquid) subjected to the impregnation step is performed. The web 30 is formed by processing the fibrous sheet 31 (fibrous sheet 31 with the resin material 32 attached thereto) subjected to the drying step into a shape corresponding to the shape of the lid body 1. The blank 30 may be used directly as the cover 1. In the example of fig. 1A, the lid body 1 is formed by forming the cut-in portion 8 in the blank 30 to form the penetration portion 10.

In the above-described production method, the resin material 32 contained in the impregnation liquid may be exemplified by an acrylic resin, a polyolefin resin, or the like, but a resin having biodegradability is preferable. The nonaqueous solvent is not particularly limited as long as it can mix the resin material, and alcohol solvents such as ethanol and the like can be exemplified.

In the drying step, the water and the nonaqueous solvent contained in the fiber sheet 31 containing the impregnating liquid may be substantially completely evaporated, or the water and the nonaqueous solvent may be slightly remained in the fiber sheet 31.

[1-3 action and Effect ]

In the case where the cover is formed of a paper-based raw material, there is a concern that moisture permeates into fibers constituting the paper-based raw material forming the cover, and the rigidity of the cover is greatly impaired, and the strength of the cover is reduced. In this regard, it is conceivable to form resin layers on both surfaces (the exposed surface side and the opposite surface side) of the cover in order to suppress penetration of moisture. However, there is a concern that the adhesion is greatly reduced when the container and the lid are adhered by the sealing method. That is, in general, a resin coating layer is often formed on the surface of a container for accommodating moisture-containing articles such as beverages and cooked foods, because the container is water-proof. The material of the resin material for forming the resin coating layer is required to be varied in terms of the material of the resin material for forming the resin coating layer, since an appropriate material is required to be selected according to the content contained in the container. Therefore, if the resin layer is formed on the surface of the lid, there is a concern that the adhesion to the resin constituting the resin coating layer is impaired depending on the material of the resin constituting the resin layer, and it is difficult to adhere the container to the lid by the sealing method. Therefore, there is room for improvement in that the container and the lid can be bonded by the sealing method even though the types of resins constituting the resin coating layer formed on the surface of the container are various.

In contrast, according to the cover 1 of embodiment 1, at least a part of the resin material 32 is attached to the fibers 31A forming at least a part of the inside of the fiber sheet 31 (the fiber sheet 31 constitutes the cover 1), so that the penetration of water into the fibers 31A can be suppressed by the resin material 32. In addition, when the sealing method is applied to the case where the lid 1 is mounted on the container 101, since a space can exist in at least a part of the fibers 31A constituting the fiber sheet 31, 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 formation of the adhesion state of the resin coating layer and the lid 1 can be facilitated. That is, even if the material of the resin forming the resin coating layer lacks adhesiveness to the resin material 32, it is easy to adhere the container 101 to the lid body 1 by the sealing method.

Next, a modification of embodiment 1 will be described.

[1-4 modification ]

Modification 1

In the lid 1 of embodiment 1, when the through portion 10 is formed in the lid 1, as shown in fig. 3A, the through portion 10 may form a part of the weakened portion 14. This embodiment is referred to as modification 1 of embodiment 1. Fig. 3A is a plan view schematically showing an example of the lid 1 of modification 1 of embodiment 1.

(embrittlement part)

As shown in the example of fig. 3A, the weakened portion 14 has a plurality of through portions 10 and at least one continuous portion 15 formed between the end portions 12 of at least two through portions 10. When a force for lifting or pressing the weakened portion 14 is applied to form the cut-off portion in the lid body, the weakened portion 14 guides the position where the cut-off is generated (cut-off position). That is, the position where the cutting occurs is formed substantially along the weakened portion. For example, in the example of fig. 3A, when a force is applied to push down a portion corresponding to the insertion port 19 from the exposed surface 72 side to the opposite surface 73 side, the continuous portion 15 is broken, and the insertion port 19 is formed (the insertion port 19 is opened) by cutting along the through portion 10 having the continuous portion 15 as the end portion 12.

(layout of fragile portion)

The layout of the weakened portions 14 is not particularly limited, and may be determined according to the conditions such as the function of the weakened portions 14. In the example of the weakened portion 14 shown in the example of fig. 3A, the continuous portion 15 is formed at one place, and four penetrating portions 10 are formed in total. In this example, the penetrating portion 10 is formed so as to radially extend from the continuous portion 15 in four different directions. In addition, this is an example of the weakened portion 14, and when a plurality of penetrating portions 10 are radially formed around the continuous portion 15 in the weakened portion 14, the penetrating portions 10 may extend in three directions away from the continuous portion 15, or may extend in five or more directions. The penetrating portion 10 may extend in two directions in a direction away from the continuous portion 15.

In the example of fig. 3A, the weakened portion 14 is formed in a cross shape, but may be formed in a C shape as shown in fig. 4B. As shown in this example, the formation site of the continuous portion 15 is not limited to one site, and may be formed at a plurality of sites. In the example of fig. 4B, the continuous portions 15 are formed at three places, and the through portions 10 (four through portions 10 in total) are formed in two directions from each continuous portion 15. The plurality of through-holes 10 are formed by the curved cuts 8 so that the brittle portion 14 as a whole has a shape substantially resembling the letter C.

The position of the weakened portion 14 is not particularly limited, but is preferably provided in the lid region corresponding portion 5B. In this case, a cutting position is formed in the cover region corresponding portion 5B.

(continuous portion)

The continuous portion 15 may be a non-cut portion as long as it is a portion formed in a state where the blank 30 forming the lid body 1 is not penetrated, or may be a half-cut portion 16 which cuts the blank 30 in the thickness direction within a range where penetration of the blank 30 is avoided, as shown in fig. 12B. Fig. 12B is a diagram for explaining one embodiment of the half-cut portion 16. The half-cut portion 16 is defined as a portion forming a half-cut structure, which is a structure that cuts the lid 1 partway along the thickness direction of the lid 1. The half-cut portion 16 is not limited to a portion cut into the cover 1 in the thickness direction of the cover 1 to a half thickness thereof. The half-cut portion 16 includes a structure that prevents the cover 1 from penetrating and cutting into more than half of the thickness of the cover 1, and a structure that cuts into the cover 1 in the thickness direction to an extent less than half of the thickness of the cover 1.

Modification 2

In the lid 1 of embodiment 1, as shown in fig. 3B, an extension portion may be formed. This embodiment is referred to as modification 2 of embodiment 1. Fig. 3B is a plan view schematically showing an example of the lid 1 of modification 2 of embodiment 1.

(extension part)

In the lid 1 of modification 2 of embodiment 1, the position and shape of the extension portion 7 are not particularly limited, but in the example of fig. 1A, the extension portion 7 is formed on the outer peripheral edge 50 of the lid region non-forming portion 5C of the lid 1 (corresponding to the outer peripheral edge 2A of the base 2 in embodiment 2 described later), and the shape of the extension portion 7 is determined so that the outer peripheral edge 7A of the extension portion 7 takes a mountain shape that is smoothly curved in a convex shape.

When the extension 7 is formed, a mark, a letter, or the like indicating the container 101 corresponding to the lid 1 can be disposed on the extension 7. For example, characters such as S, M, L are arranged on the extension portion 7 by printing or the like. Moreover, the kinds of the container 101 and the cover 1 are associated in the following manner: when the size of the container 101 is small, the cover 1 printed with the letter S is used; when the size of the container 101 is a medium size, the lid 1 printed with the letter M is used; when the size of the container 101 is large, the lid 1 printed with the letter L is used. In this way, when the lid 1 is joined to the container 101, the container 101 and the lid 1 can be prevented from being joined to each other in different combinations of incorrect dimensions.

In addition, if the extension portion 7 is formed in the cover 1, the extension portion 7 can be used as a grip portion.

[ embodiment 2 ]

In embodiment 1, description is given taking, as an example, a case where the insertion port 19 is formed in the penetration portion 10. The lid 1 is not limited to this, and the penetrating portion 10 may be formed as at least a part of the boundary between the opening edge of the small opening and the outer peripheral edge of the small lid, as shown in fig. 7A and 7B. That is, as shown in fig. 7A and 7B, the cover 1 includes: a base portion having a small opening portion having an opening area smaller than the opening portion 102 of the container 101; a small cover part for opening and closing the small opening part; and a hinge portion connecting the base portion and the small cover portion. An embodiment having such a structure is referred to as embodiment 2. Fig. 7A is a plan view showing an example of the lid 1 according to embodiment 2. Fig. 7B is a cross-sectional view schematically showing a state of a vertical section along line D-D of fig. 7A. Embodiment 2 may be the same as embodiment 1 in terms of the through-portion 10 except at least a part of the boundary between the opening edge of the small opening and the outer peripheral edge of the small lid. In embodiment 2, an insertion port 19 also shown in embodiment 1 may be formed.

[2-1 Structure ]

As shown in fig. 7A, 7B, and the like, the lid 1 of embodiment 2 includes a base 2, a small lid 3, and a hinge 4. In the example of fig. 7A and 7B, the lid region corresponding portion 5B of the lid body 1 has the base 2, the small lid portion 3, and the hinge portion 4, and the lid region non-forming portion 5C has the base 2.

(base)

The base 2 is determined as a portion having the joining region corresponding portion 5A and forming the small opening portion 6. The base 2 can be a portion for determining a displacement reference of the small lid 3 described later. In the example of fig. 7A, the base 2 and the small lid 3 form an exposed surface 72 of the lid 1 in a plan view of the lid 1. In embodiment 2, in a plan view of the lid 1 (in the case where the Z-axis direction (vertical direction) is the line of sight direction in the example of fig. 7A), the joint region corresponding portion 5A is formed in the base 2 so as to correspond to a portion where the joint region R is formed.

(Small opening)

The small opening 6 is formed so as to penetrate the opposed surface 73 of the lid 1 with respect to the container 101 and the non-opposed surface (the exposed surface 72 of the lid 1) of the lid 1 with respect to the container 101. The small opening 6 is formed inside the portion corresponding to the joint region corresponding portion 5A in a plan view of the lid body 1 so as to have a smaller opening area than the opening 102 of the container 101. The small opening 6 is a portion for forming an opening of a content (for example, beverage, diet, or the like) in the space 105 of the container 101 in an opening state in which the lid body 1 is joined to the container 101. The small opening 6 is combined with a small lid 3 described later to form an opening forming portion 20.

(opening Forming section)

As shown in fig. 7A and the like, the opening forming portion 20 is defined as a portion having the small opening portion 6 and the small lid portion 3. In the opening forming portion 20, the small opening portion 6 is opened and closed with the displacement of the small lid portion 3. The opening forming portion 20 is formed so as to be in a state where the small lid portion 3 closes the small opening portion 6 and a state where the small lid portion 3 is displaced and the small opening portion 6 is opened as shown in fig. 7A. When the small lid 3 is rotated so as to pull up the small lid 3 with the base 2 as a reference, the small opening 6 is exposed, and the small lid becomes an exposure opening. That is, the opening forming portion 20 combines the small opening portion 6 and the small lid portion 3 so that the space portion 105 of the container 101 can be visually recognized from the small opening portion 6 when the small lid portion 3 is pulled up in a state where the lid body 1 is attached to the container 101.

In a state where the small opening 6 is an exposure port, the small opening can be used as a supply port for additional liquid such as beverage or solid such as ice as will be described later. In addition, when a liquid such as a beverage is present in the container 101 (the space 105), the small opening 6 can be used as a drinking port or a pouring port for the beverage.

(Small cover)

The lid 1 is provided with a small lid portion 3. The small lid 3 is formed so as to cover the small opening 6 so as to be able to open and close the small opening 6. In the example of fig. 7A, as will be described later with reference to fig. 9C, the small lid 3 is formed so as to be displaceable to be pulled up with respect to the base 2, and the small opening 6 is formed (opened) when the small lid 3 is pulled up. In the example shown in fig. 7A, the shape of the small lid portion 3 can be determined so that the outer peripheral outline shape of the small lid portion 3 follows the shape of the opening edge 6A of the small opening portion 6 in a state where the small opening portion 6 is closed with the small lid portion 3. In this case, in a state where the small opening 6 is closed by the small lid 3, the end face of the outer peripheral edge 3A of the small lid 3 is easily brought into contact with the end face of the opening edge 6A of the small opening 6.

In the lid 1 shown in the example of fig. 7A, the small lid portion 3 is provided on the inner side (lid region corresponding portion 5B) (center CT side) than the joint region corresponding portion 5A in a plan view of the lid 1. The small lid 3 is displaced (rotated) so that the small lid 3 is pulled up. The small lid portion 3 is connected to the base portion 2 by a hinge portion 4. As the small lid 3 is pulled up with the hinge 4 as a pivot, the small opening 6 is exposed.

In the lid 1, the small opening 6 is exposed as described above in a state where the small lid 3 is pulled up. This state is referred to as an open-lid state. A state in which the small opening 6 is covered with the small lid 3 is referred to as a closed lid state.

In the lid body 1, even after the lid is opened (after the small lid 3 is raised and the small opening 6 is exposed), the lid can be set again to the closed state, and when the lid is set to the closed state, the end face of the opening edge 6A of the small opening 6 of the base 2 can face the end face (outer peripheral end face) of the outer peripheral edge 3A of the small lid 3.

(hinge part)

As described above, the lid 1 has the hinge portion 4. The hinge portion 4 is generally constituted by a portion corresponding to a line segment connecting the two base end portions 74 along the outer peripheral edge 3A of the small lid portion 3, and corresponds to a boundary portion between the base portion 2 and the small lid portion 3. The hinge portion 4 is a portion that becomes a rotation axis when the small lid portion 3 rotates. However, the case where the small lid portion 3 rotates includes not only the case where the small lid portion 3 stands up from the base portion 2 at a certain angle at the position of the hinge portion 4, but also the case where the small lid portion 3 stands up while being gradually bent from the hinge portion 4 toward the front end edge portion 75 of the small lid portion 3.

The base part 2 is connected to the small lid part 3 at least at the hinge part 4. The hinge portion 4 is not particularly limited as long as it is a portion defined as the boundary between the base portion 2 and the small lid portion 3. The hinge portion 4 may be a perforated line structure or a half-cut portion, as in the connection structure 17 described later.

(boundary between the outer periphery of the small lid portion and the opening edge of the small opening portion)

At the boundary position between the outer peripheral edge 3A of the small lid portion 3 and the opening edge 6A of the small opening portion 6, the small lid portion 3 and the small opening portion 6 may be cut off (may be in a non-connected state), or a connection structure 17 may be formed as described later. When the small lid 3 and the small opening 6 are in a disconnected state at the boundary position between the outer peripheral edge 3A of the small lid 3 and the opening edge 6A of the small opening 6, as shown in fig. 7B, the penetration portion 10 is formed as a structure portion that cuts off the outer peripheral edge 3A of the small lid 3 and the opening edge 6A of the small opening 6. The peripheral surface portion 11 of the through portion 10 forms an end surface of the outer peripheral edge 3A of the small lid portion 3 and an end surface of the opening edge 6A of the small opening portion 6. The end 12 of the penetrating portion 10 is located at the base end 74 of the hinge portion 4. The structure of the through portion 10 is the same as that described in embodiment 1, and therefore, description thereof is omitted.

(connection Structure of base portion and Small cover portion)

In the lid body 1, at the boundary position between the outer peripheral edge 3A of the small lid portion 3 and the opening edge 6A of the small opening portion 6, a structure (connection structure 17) may be formed in which the opening edge 6A of the small opening portion 6 of the base portion 2 and the outer peripheral edge 3A of the small lid portion 3 are connected as described above. As shown in fig. 12A, the connection structure 17 is preferably configured as a weakened portion 14 which is a portion weaker than the small lid portion 3. Fig. 12A is a diagram showing an example of the case where the connection structure 17 is the weakened portion 14. By making the connection structure 17 a weakened portion 14, when the small lid portion 3 is rotated about the hinge portion 4 with respect to the base portion 2, the weakened portion 14 (the continuous portion 15) can be broken. The small lid 3 stands up with respect to the base 2 while being separated from the base 2 substantially along the connection structure 17.

(embrittlement part)

As described in modification 1 of embodiment 1, the weakened portion 14 is formed by combining the penetrating portion 10 and the continuous portion 15. Therefore, when the connection structure 17 is the weakened portion 14, the connection structure is formed by combining the penetrating portion 10 and the continuous portion 15 at the boundary position between the outer peripheral edge 3A of the small lid portion 3 and the opening edge 6A of the small opening portion 6. In the example of fig. 12A, the combined structure is a structure in which the combined structure of the continuous portion 15 and the penetrating portion 10 is alternately arranged along the longitudinal direction of the portion where the end face of the opening edge 6A of the small opening portion 6 faces the end face of the outer peripheral edge 3A of the small lid portion 3 (so-called a tooth hole line structure).

The connection structure 17 is not limited to the perforated line structure, and for example, as shown in fig. 12B, the connection structure 17 may be integrally formed with the half-cut portion 16. The half-cut portion 16 is the same as the half-cut portion 16 described in embodiment 1 using fig. 12B, and therefore, the description thereof is omitted.

In the case where the connection structure 17 includes the continuous portion 15 and the penetrating portion 10, the continuous portion 15 may be a half-cut portion 16 as shown in fig. 12B.

In the case where the through-hole 10 is formed in the lid 1 of embodiment 2, the through-hole 10 may be formed as an air-discharge portion at a position different from the boundary position between the outer peripheral edge of the small lid portion and the opening edge of the small opening portion. For example, in the case where the connection structure 17 is formed at the boundary position between the outer peripheral edge of the small lid portion and the opening edge of the small opening portion, and the connection structure 17 is integrally formed as the half-cut portion 16, the penetrating portion 10 may be formed in a different structure from the connection structure 17.

The through portion 10 may be formed at a boundary position between the outer peripheral edge of the small lid portion and the opening edge of the small opening portion, and at a position different from the boundary position. As described above, in the lid body 1 of embodiment 2, at least a part of the penetrating portion may be formed at the boundary position between the outer peripheral edge of the small lid portion and the opening edge of the small opening portion.

[2-2 action and Effect ]

The cover 1 of embodiment 2 can obtain the same effects as those of embodiment 1.

The following description further regards modification of embodiment 2.

[2-3 modification ]

Modification 1

As shown in fig. 8A, 8B, etc., in the lid 1 of embodiment 2, a grip 21 is provided in the small lid 3. The lid 1 having such a structure is referred to as modification 1 of embodiment 2. Fig. 8A is a plan view schematically showing an example of cover 1 according to modification 1 of embodiment 2. Fig. 8B is a cross-sectional view schematically showing a state of a vertical section along line E-E of fig. 8A.

The lid 1 according to modification 1 of embodiment 2 may be similar to that of embodiment 2 described above except that the small lid 3 is provided with the grip portion 21, and therefore, description of other structures (the base 2, the hinge portion 4, etc.) except that the small lid 3 is provided with the grip portion 21 will be omitted.

(holding part)

In the example of embodiment 2 shown in fig. 8A and 8B, in a state where the small opening 6 is closed by the small lid 3, the grip 21 is provided on the upper surface side, which is the side of the exposed surface of the small lid 3 (the exposed surface 72 of the lid 1). The structure of the grip portion 21 is not particularly limited as long as it is a structure capable of rotating the small lid portion 3 about the hinge portion 4, and in the example of fig. 8A and 8B, a tab member 22 is provided as the grip portion 21.

(Pull tab member)

In the example of fig. 8A and 8B, in a state where the small opening 6 is closed by the small lid 3, the tab member 22 is joined to the small lid 3 at one end 22A of the tab member 22, and the other end 22B of the tab member 22 is set as a free end. The portion of the tab member 22 that is joined to the small lid portion 3 is referred to as a tab joining portion 23. The shape and structure of the portion of the tab member 22 other than the tab junction portion 23 on the free end side of the tab member 22 (the portion on the other end 22B side) are not particularly limited as long as the portion is formed to a size and shape that can be grasped by a human hand to the tab member 22. The material of the tab member 22 may be the same as that of the blank 30 described in embodiment 1, or may be made of a paper-based material.

In the lid 1, the mounting position and the mounting direction of the tab member 22 in the small lid 3 are not particularly limited, and in the example of fig. 8A and 8B, the tab member 22 is bonded to the small lid 3 at a position close to the tip end of the small lid 3 (i.e., in the vicinity of the tip edge 75).

The method for joining the tab member 22 to the small lid portion 3 (i.e., the method of forming the tab joining portion 23) can be exemplified by various methods such as ultrasonic joining, heat sealing, joining by an adhesive, and the like. As a method of forming the tab junction 23, in the above method, ultrasonic bonding is preferable from the viewpoints of ease of bonding, strength of bonding, and the like. The position of the tab engagement portion 23 formed in the small lid portion 3 is preferably a position deviated from the central portion of the small lid portion 3 from the viewpoint of easy lifting of the tab member 22 to raise the small lid portion 3 (rotation of the small lid portion 3).

(orientation of tab member (mounting direction))

In the lid 1, in the example of fig. 8A, the other end 22B side (free end side) of the tab member 22 is disposed closer to the hinge portion 4 side than the one end 22A of the tab member 22. However, this is an example, and the orientation of the tab member 22 may be other than the orientation shown in the example of fig. 8A. For example, the tab member 22 may be disposed such that the other end 22B side of the tab member 22 is located at a position distant from the hinge portion 4 as compared with the one end 22A of the tab member 22.

In the lid 1 of modification 1 of embodiment 2, the small lid 3 can be easily pulled up by providing the grip portion 21.

Modification 2

As shown in examples of fig. 13A and 13B, the lid 1 according to modification 2 of embodiment 2 may have a holding structure forming portion that forms a holding structure for holding the small lid 3 in a state where the small opening 6 is opened by rotating the small lid 3 about the hinge 4 with respect to the base 2. The lid 1 having such a structure is referred to as modification 2 of embodiment 2. Fig. 13A is a plan view schematically showing an example of cover 1 according to modification 2 of embodiment 2. Fig. 13B is a cross-sectional view schematically showing a state of a vertical section along H-H line of fig. 13A.

(holding Structure Forming section)

The structure of the holding structure forming portion is not particularly limited. For example, in the case of the cover 1 shown in fig. 13A and 13B, the claw portion 24 and the receiving portion 25 form a holding structure forming portion.

(claw portion)

The claw portion 24 may be a portion having a structure that can be engaged with a receiving portion 25 described later by hooking or inserting, as shown in the example of fig. 13A. In the example of fig. 13A, the claw portion 24 is provided on the tab member 22 as an example of the grip portion 21. In this example, the claw portion 24 is formed by a cut-in portion having a contour shape such as a mountain shape formed at a predetermined position of the tab member 22.

(receiving part)

The receiving portion 25 is formed in such a shape that the claw portion 24 can be locked or inserted. In the example of fig. 13A, the receiving portion 25 is a slit portion formed by cutting out a predetermined position of the base portion 2. In this case, the receiving portion 25 corresponds to the penetrating portion 10. The receiving portion 25 is formed at a position that can be opposed to the claw portion 24 when the tab member 22 is displaced so as to rotate the small cover portion 3.

(formation of retaining Structure)

When the small lid 3 is raised in the lid 1, the grip 21 is pulled up. At this time, the claw portion 24 is formed in a shape protruding downward or upward by pulling up the tab member 22 and bending a predetermined portion of the free end side (the other end 22B side) of the tab member 22. Then, the tab member 22 is displaced so that the small lid portion 3 is rotated to a position where the claw portion 24 of the small lid portion 3 faces the receiving portion 25 or a position in the vicinity of the position. Then, the claw portion 24 of the tab member 22 is engaged with or inserted into the receiving portion 25. Thereby, a holding structure for holding the small lid 3 in a state where the small opening 6 is exposed is formed.

In the above description, the case where the slit portion (the penetrating portion 10) is formed as the receiving portion 25 in the holding structure forming portion has been described, but as described later in modification 3 of embodiment 2, the structure corresponding to the receiving portion 25 is not limited to the slit portion.

Modification 3

As in modification 2 of embodiment 1, the lid 1 of embodiment 2 may be provided with an extension portion 7 as shown in fig. 9A, 9B, and the like. This embodiment is referred to as modification 3 of embodiment 2. Fig. 9A is a plan view schematically showing an example of the cover of modification 1 of embodiment 2. Fig. 9B is a cross-sectional view schematically showing a vertical cross-section taken along line F-F in fig. 9A. In the lid 1 of embodiment 2, the configuration of the extension portion 7 is the same as that of modification 2 of embodiment 1, and therefore, the description thereof is omitted. Fig. 9A illustrates a case where extension 7 is formed in cover 1 according to modification 2 of embodiment 2.

In the example of fig. 9A, regarding the formation position of the extension portion 7, the extension portion 7 is defined on the outer peripheral edge 2A of the base portion 2 in such a manner that the hinge portion 4 is located between the front end edge portion 75 forming the tip of the small lid portion 3 and the extension portion 7. In this case, the position of the tip edge 75 of the small cap 3 and the position of the extension 7 can be set to be as far apart as possible. By keeping the position of the tip edge 75 of the small lid portion 3 and the position of the extension portion 7 as far as possible in this way, even if the lid 1 is moved by a person holding the extension portion 7 by hand, the risk of the person holding the lid 1 touching the small lid portion 3 of the lid 1 can be suppressed, and contamination of the small lid portion 3 due to contact of the person's hand can be suppressed.

In the cover 1 of modification 3 of embodiment 2, the extension portion may also function as the receiving portion described in modification 2 of embodiment 2.

(holding Structure Forming section)

The lid 1 shown in fig. 9A is formed with a claw portion 24 in a grip portion 21 (in fig. 13A, fig. 9A, a tab member 22), and the claw portion 24 and the extension portion 7 form a holding structure forming portion, as in the example of fig. 13A. In the example of fig. 9A, the extension portion 7 is formed such that the outer peripheral edge 7A of the extension portion 7 can face the claw portion 24 when the tab member 22 is displaced so as to rotate the small lid portion 3.

(formation of retaining Structure)

In the lid 1 shown in the example of fig. 9A, as in the example of fig. 13A, the tab member 22 is pulled up in the direction of arrow F1 in fig. 9B, for example, when the small lid 3 is raised. In the example of fig. 9A, as in the example of fig. 13A, the claw portion 24 is formed in a shape protruding downward or upward by pulling up the tab member 22 and bending a predetermined portion on the free end side (the other end 22B side) of the tab member 22. Then, the tab member 22 is displaced so that the small cover portion 3 is rotated to a position at or near the position where the claw portion 24 opposes the outer peripheral edge 7A of the extension portion 7. Then, as shown in fig. 9C, the claw portion 24 is caught or inserted into the extension portion 7. Thus, a holding structure for holding the small lid 3 in a state where the small opening 6 is set as the exposure port of the space 105 is formed. Fig. 9C is a cross-sectional view for explaining one embodiment of the holding configuration.

(size of extension)

In the case where the extension portion 7 has the function of the receiving portion 25, as shown in fig. 10, the extension distance D1 of the extension portion 7 may be smaller than the separation distance D2 between the tip end of the small opening portion 6 and the outer peripheral edge 2A of the base portion 2. Fig. 10 is a plan view for explaining one embodiment of the extension 7. The extending distance D1 of the extending portion 7 indicates the longest separation distance from the outer peripheral edge 2A of the lid body 1 to the outer peripheral edge 7A of the extending portion 7 along the direction radially away from the position of the center CT of the lid body 1. In this case, when the small opening 6 is used as a drinking port by forming the tip end of the small opening 6 (the front end edge 75 of the small lid 3) close to the outer peripheral edge 2A of the lid 1, the size of the extension 7 can be reduced, and it is possible to make it difficult for the user to recognize the extension 7 as a grip for forming the outlet. That is, it is possible to make it difficult to use a tearing hole, which is generated by a user pulling up the extension portion 7 and tearing the lid body 1, as a content taking-out port.

In addition, if the preform 30 is a material in which a resin material is adhered to fibers forming the inside of a fiber sheet, the rigidity of the preform 30 does not become excessively strong, and when the claw portion 24 is engaged with the extension portion 7, the extension portion 7 can be slightly deflected, and even if the tip of the claw portion 24 is brought into a state of entering the edge 103 of the container 101, the tip of the claw portion 24 can be slid to the extension portion 7 in a direction in which the engagement between the extension portion 7 and the claw portion 24 is released. Further, the holding structure is easily formed in a state where the tip of the claw portion 24 is located outside the edge 103 of the container 101. When such a holding structure is formed, even if contamination occurs in the edge 103 of the container 101, the contamination does not spread to the claw portion 24 of the lid body 1, and the hygienic state can be improved.

As for the configuration of modification 3 of embodiment 2 in which the size of the extension portion 7 is reduced as shown in fig. 10, the cover 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 opposed surface 73 can be applied instead of the cover 1 having the preform 30. However, when the lid body 1 is a blank 30 and the extension 7 is also formed from the blank 30, it is more preferable in that the surface of the extension 7 is easily roughened and the extension 7 is easily slightly deflected, as compared with the case of using a sheet material having a resin layer formed thereon.

[3 rd embodiment ]

As shown in fig. 5A and 5B, the lid 1 of embodiment 1 and embodiment 2 may be formed with a window. This embodiment will be referred to as embodiment 3. Fig. 5A is a plan view showing an example of the lid 1 according to embodiment 3. Fig. 5B is a cross-sectional view schematically showing a state of a B-B longitudinal section of the lid body 1 shown in fig. 5A.

(Window)

The window 40 is a light-transmitting portion that improves visibility from the outside into the space 105 in the covered container 150. The window 40 has a structure in which an opening (in-cover opening 41) formed in the cover region corresponding portion 5B is covered with a window sheet 42 such as a light-transmissive film. The window sheet 42 is not particularly limited as long as it is a light-transmitting sheet such as a light-transmitting film, and examples thereof include films of the following materials. As a material of the film forming the window sheet 42, synthetic resin, natural resin, and the like are exemplified. Examples of the synthetic resin and the natural resin include an olefin resin such as Polyethylene (PE), polypropylene (PP), a styrene resin such as Polystyrene (PS), an acrylic resin such as polyacrylate and polymethacrylate, a vinyl resin such as polyvinyl chloride (PVC) and polyvinyl acetate, a polyamide resin, a polyimide resin, a polyester resin such as polyethylene terephthalate (PET), a fluorine resin, a polycarbonate resin (PC), a polyether ether ketone (PEEK) and a polyether resin such as Polyether Sulfone (PEs). As a material of the film forming the window sheet 42, a biodegradable resin or the like is preferable from the viewpoint of reducing environmental load. Examples of the biodegradable resin include biodegradable resins of a microorganism production system such as Polyhydroxyalkanoate (PHA) and PHA-based copolymers; cellulose derivatives such as cellulose acetate and natural biodegradable resins such as starch resins containing starch such as corn starch as a main raw material; polylactic acid (PLA), polylactic acid/polycaprolactone copolymer, lactic acid resin such as polylactic acid/polyether copolymer, succinic acid resin such as polybutylene succinate (PBS), polybutylene succinate-adipate (PBSA), polyethylene terephthalate succinate (PETS), chemically synthesized biodegradable resin such as polycaprolactone and polyvinyl alcohol (PVA), polyglycolic acid (PGA), polybutylene terephthalate-adipate, biodegradable polyolefin (trade name; craDrop, etc.).

In the case where the content of the container is liquid, the window sheet 42 is preferably made of a material excellent in water resistance, oil resistance, and the like.

The window sheet 42 provided in the window 40 is formed with a portion (bonding portion 46) bonded along a portion of the blank 30 corresponding to the periphery of the in-lid opening 41. The method of adhering the window sheet 42 to the portion corresponding to the periphery of the in-cover opening 41 is not particularly limited. For example, a hot melt adhesive may be applied between the periphery of the in-lid opening 41 and the window sheet 42 to form an application portion, and the window sheet 42 may be bonded to a portion corresponding to the periphery of the in-lid opening 41 by heat sealing with the application portion to form the bonding portion 46. The window 40 is provided with respect to the lid 1 of embodiment 1 in the example of fig. 5A, but may be provided with respect to the lid 1 of embodiment 2 as illustrated in fig. 11A, or with respect to the lid 1 of embodiment 4 described later as illustrated in fig. 11B and 11C. Fig. 11A and 11B are plan views showing other examples of the lid 1 according to embodiment 3, and fig. 11C is a cross-sectional view schematically showing a state of a vertical section along line G-G in fig. 11B.

The structure of window 40 shown in embodiment 3 is applicable to a cover using a sheet in which a resin layer is formed on the surface of fiber sheet 31 of at least one of exposed surface 72 and facing surface 73, instead of cover 1 having blank 30. However, when the lid body 1 is the blank 30, in forming the adhesive portion 46 between the window sheet 42 and the blank 30, good adhesion between the window sheet 42 and the blank 30 can be expected even if various resin materials are used as materials such as a hot melt adhesive for forming the adhesive portion 46, which is more preferable.

[ embodiment 4 ] 4 th embodiment

As shown in fig. 6A, 6B, etc., a bulge (bulge) may be formed in the lid 1 of embodiment 1 to embodiment 3. This embodiment will be referred to as embodiment 4.

(bulge)

The ridge 43 is formed on the exposed surface 72 side of the lid body 1, and is a portion protruding upward (toward the +z direction side) with reference to the outside of the ridge 43 (toward the outside than the base end of the ridge 43) (in the example of fig. 6A and 6B, a portion protruding toward the +z direction side with reference to the position of the bonding region corresponding portion 5A). The raised portion 43 is preferably provided inside the inner edge end of the joint region corresponding portion 5A. That is, the ridge portion 43 may be formed on the entire lid region corresponding portion 5B, or may be provided in a part of the inside of the lid region corresponding portion 5B.

(concave portion)

On the opposite surface side (opposite surface 73 side) of the exposed surface 72 of the cover 1, a recess 44 is formed at a portion (opposite portion) corresponding to the ridge 43. In this case, the portion where the ridge portion 43 is formed is a convex structure portion in the embossed structure. In this way, even if the content is present above the opening 102 of the container 101 in the state of the capped container 150, the content does not come into contact with the cap 1, and the state of the cap 1 being mounted is easily maintained. For example, when liquid such as coffee is contained as the content in the container 101 and the fresh cream floats on the liquid surface of the liquid, even if the upper end of the fresh cream is located above the opening 102 of the container 101, the upper end of the fresh cream can be contained in the space in the recess 44, and the adhesion of the upper end of the fresh cream to the facing surface 73 of the lid 1 can be suppressed.

When the ridge portion 43 is formed in the lid 1, the window portion 40 is preferably formed in the region including the distal end portion 43A of the ridge portion 43 as shown in fig. 11B and 11C, from the viewpoint that the entire space (the concave portion 44) including the space portion 105 in the container 101 is easily visually recognized as a whole.

In the case where the lid body 1 is formed with the bulge portion 43, it is preferable that the outer peripheral edge 3A of the small lid portion 3 and the hinge portion 4 are formed along the base end portion of the bulge portion 43, as shown in fig. 6A and 6B. In this case, when the small lid portion 3 is pulled up around the hinge portion 4, the entire ridge portion 43 can be pulled up.

(manufacturing method)

The lid 1 of embodiment 4 can be manufactured as follows, for example. The impregnation step and the drying step are performed as described in the above-mentioned [1-2 manufacturing method ] in embodiment 1. However, the shaping treatment for shaping the fiber sheet 31 containing the impregnating solution is performed during the drying step or before the drying step (however, after the impregnating step (i.e., between the impregnating step and the drying step)). The shaping process may be exemplified by an embossing process. In the shaping process, a structure corresponding to the raised portion 43 (a structure corresponding to the recessed portion 44 is also formed). After the shaping process and the drying process, a process corresponding to the shape of the lid body 1 is performed to form the preform 30.

In the drying step, the water and the nonaqueous solvent contained in the fiber sheet 31 containing the impregnating liquid may be substantially completely evaporated, or the water and the nonaqueous solvent may be slightly remained in the fiber sheet. In addition, if moisture and a nonaqueous solvent remain slightly in the fiber sheet, a shaping treatment may be applied after the drying step. However, from the viewpoint of improving the appearance of the raised portion formed by the shaping step, it is preferable to apply the shaping treatment in the middle of the drying step or before the drying step.

The structure of the raised portion 43 (and the recessed portion 44) shown in embodiment 4 is applicable to a cover using a sheet in which a resin layer is formed on the surface of the fibrous sheet 31 on at least one of the exposed surface 72 and the opposed surface 73, instead of the cover 1 having the blank 30. However, if the lid 1 is a blank 30, the method for manufacturing the lid 1 according to embodiment 4 is more preferable in that the raised portion 43 having a good appearance can be easily obtained.

In the lid 1 according to embodiment 1 to embodiment 4 described above, the lid 1 is joined to the container 101 in a state of the lid-attached container 150 described later, and the joint 151 is formed. The joint 151 serves as a portion where the container 101 and the lid 1 adhere to each other (including adhesion), and the lid 1 and the container 101 are peeled off from each other at the joint 151 in order to separate the lid 1 from the container 101. The lid 1 is not limited to this, and the lid 1 may be fitted to the container 101 as follows.

[5 th embodiment ]

[5-1 Structure ]

As illustrated in fig. 15A and 15B, the lid 201 of embodiment 5 includes a top cover 202 and a side wall 203. As will be described later with reference to fig. 21, the lid 201 of embodiment 5 is formed so as to be able to be in contact with the container 101, and the container 101 has an opening 102 formed at the upper end and an edge 103 serving as the upper end edge forming the outer periphery of the opening 102. In a state where the lid 201 is in contact with the container, the lid 201 is formed so as to be capable of fitting to the container having the opening 102 formed at the upper end and the rim 103 serving as the upper end rim forming the outer periphery of the opening 102. Fig. 15A is a perspective view schematically showing an example of the lid body of embodiment 5. Fig. 15B is a cross-sectional view schematically showing an example of the lid body of embodiment 5. Fig. 15B shows a state of the N-N line vertical section of fig. 15A. Fig. 21 is a cross-sectional view showing an example of a capped container 150 obtained by joining the cap 1 shown in fig. 15A and 15B to the container 101. In fig. 15A, the line N-N is set to a position substantially passing directly above the insertion port 219. The same applies to the J-J line of FIG. 16A, the K-K line of FIG. 17A, and the L-L line of FIG. 18A.

As shown in the example of fig. 15A and 15B, the cover 201 preferably has a curved portion 204. The curved portion 204 is a portion connecting the top cover portion 202 and the side wall portion 203, and in the example of fig. 15A and 15B, the curved portion 204 is formed continuously (integrally) with the side wall portion 203.

(Top cover part)

As shown in fig. 21, when the lid 201 is attached (fitted) to the container 101, the top cover 202 serves as a portion covering the opening 102 of the container 101. The shape of the top cover portion 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, and a chamfered shape.

(bending part)

The curved portion 204 is formed so as to surround the outer peripheral edge of the top cover portion 202, and serves as a portion that forms the boundary between the top cover portion 202 and the side wall portion 203. The curved portion 204 is formed such that the side wall portion 203 faces the side wall 104 or the rim portion 103 of the container 101 when the lid 201 is attached to the container 101. In the example of fig. 15A to 15B, the bending portion 204 has a bent structure, but as described later, the bending portion 204 is not limited to the case of having a bent structure. The "portion forming the boundary between the top cover portion 202 and the side wall portion 203" includes both a case where the portion itself is a boundary and a case where the boundary is defined in the interior or at the end of the portion (a case where the top cover portion 202 and/or a portion of the side wall portion 203 also serves as the curved portion 204). The boundary between the top cover portion 202 and the side wall portion 203 is defined at the center of the curved portion 204. When the bending portion 204 has a bending structure (for example, fig. 20A to 20B, which show an example of modification 4 of embodiment 4 described later), the bending portion 204 is formed of a specific portion in a bending range, and a boundary between the top cover portion 202 and the side wall portion 203 is defined by a substantially center of the bending portion 204.

(side wall portion)

The side wall 203 is formed in a ring shape along the outer peripheral end of the top cover 202.

The lid 201 of embodiment 5 can be obtained by: the blank 250 for forming the lid 201 is integrally formed, whereby the top cover portion 202, the bent portion 204, the side wall portion 203, and the top cover portion 202 are integrally formed.

(blank)

In the lid 201 of embodiment 5, the blank 250 may be formed in the same manner as the blank 30 shown in the descriptions of embodiment 1 to embodiment 4. That is, the blank 250 is formed of a sheet material having a fiber sheet 260 and a resin material, wherein the fiber sheet 260 contains fibers formed of a paper-based raw material. The sheet has a structure in which a resin material is attached to fibers forming at least a part of the inside of the fiber sheet 260. The same resin materials as described in embodiment 1 to 4 can be used. The fiber sheet 260 may be the same as the fiber sheet 31 described in embodiment 1 to embodiment 4.

(contact portion)

The cover 201 has a contact portion 274 that contacts the container 101 in a state of being fitted to the container 101. The contact portion 274 is formed at a predetermined portion (1 st contact portion 274A) of the side wall portion 203. As shown in fig. 15B, the contact portion 274 is preferably formed in a portion of the top cover portion 202 corresponding to a predetermined region on the opposite surface 273 side (2 nd contact portion 274B). When the lid 201 is fitted to the container 101, the contact portion 274 is formed, so that leakage of the content of the container 101 to the outside can be suppressed. The 1 st contact portion 274A is preferably formed substantially over the entire outer surface end of the rim 103 of the container, and is preferably formed in a ring shape. The 2 nd contact portion 274B is preferably formed substantially over the entire periphery of the upper end of the rim 103 of the container, and is preferably formed in a ring shape. The 1 st contact portion 274A and the 2 nd contact portion 274B may be separated from each other or may be connected. The same applies to the contact portion 274 (including the 1 st contact portion 274A and the 2 nd contact portion 274B) shown in embodiment 5 as well as to the 6 th, 7 th and 8 th embodiments (embodiment 6 to embodiment 8) described later.

In the example of fig. 15A and 15B, a penetration portion 210 is formed at a predetermined position of the top cover portion 202. An insertion port 219 is formed as the penetration portion 210. The through portion 210 is formed by the cut-in portion 208. The cut 208 is a cross cut in the example of fig. 15. The insertion port 219 and the insertion portion 210 may be formed in the same manner as the insertion port 19 and the insertion portion 10 described in embodiment 1. The penetrating portion 210 is a portion that penetrates the top cover portion 202 from the exposed surface 272 to the facing surface 273. In the region where the peripheral surface portion of the through portion 210 is formed (the same region as the region of the peripheral surface portion 11 described in embodiment 1), the cross section of the fiber sheet 260 is exposed as in the case described in embodiment 1. At least a part of the cross section of the fiber sheet 260 exposed at the peripheral surface of the penetration portion 210 is exposed. The exposure of the cross section of the fiber sheet 260 and the exposure of the resin material in embodiment 5 are similar to those in embodiments 6 to 8 described below.

[5-2 action and Effect ]

When a blank for forming a lid body having a curved portion (lid body having a side wall portion, a curved portion, and a top lid portion) is formed of a paper-based raw material, when the blank is shaped into the shape (three-dimensional shape) of the lid body, a large number of fine wrinkles, and the like are generated in the vicinity of the curved portion and the side wall portion. If the blank is made of only paper-based raw materials, there are cases where a restoring force acts on the fibers constituting the lid after shaping, and such fine wrinkles or creases are also affected by a force or the like applied to the lid when the lid is handled, when the lid is attached to the container, or the like, and the shape is restored. In this regard, according to the lid 201 of embodiment 5, it is possible to suppress the fear of shape recovery after shape deformation (shaping) in the case of integrally molding the blank 250.

[5-3 modification ]

(modification 1 of embodiment 5)

In the lid 201 of embodiment 5, as shown in fig. 18A, 18B, and the like, the top cover 202 and the side wall 203 may be formed of separate members (modification 1 of embodiment 5). Variation 1 of embodiment 5 includes a case where a part of the member forming the top cover portion 202 forms a part of the side wall portion 203, and a case where a part of the member forming the side wall portion 203 forms a part of the top cover portion 202. Fig. 18A and 18B show an example in which a part of the member forming the top cover 202 forms a part of the side wall 203.

Regarding the lid 201 of modification 1 of embodiment 5 shown in fig. 18A, 18B, and the like, for example, a top cover portion forming member 222 having a 1 st portion 231 for forming the top cover portion 202 and a side wall portion forming member 223 for forming the side wall portion 203 are prepared. A joint margin 230 configured to be able to be joined to the side wall portion forming member 223 is provided as a 2 nd portion 232 extending from an outer end portion (outer edge end portion) of the 1 st portion 231 of the top cover portion forming member 222. The bending portion 204 is formed by bonding the bonding allowance portion 230 of the top cover portion forming member 222 to the upper end portion of the side wall portion forming member 223, thereby bonding the top cover portion forming member 222 to the side wall portion forming member 223. At this time, the cover 201 is formed. In this case, as the blanks, as shown in fig. 19A, 19B, and the like, blanks (referred to as 1 st blank 251 and 2 nd blank 252, respectively) for forming the top cover portion forming member 222 and the side wall portion forming member 223 can be used. A 1 st blank 251 for forming the top cover portion forming member 222 may use a sheet formed in a shape that matches the shape of the joining margin portion 230 with the top cover portion 202. The 2 nd blank 252 has a shape corresponding to the shape of the side wall 203, and for example, when the side wall 203 has a shape that reduces or expands toward the tip, a sheet formed in a fan shape (formed in a partial fan shape) may be used. The side wall forming member 223 forming the side wall 203 can be obtained by joining the end edges 253 and 253 of the second blank 252.

In modification 1 of embodiment 5, at least one blank selected from the group consisting of the 1 st blank 251 and the 2 nd blank 252 may be formed in the same manner as the blank 30 described above. That is, at least one blank selected from the group consisting of the 1 st blank 251 and the 2 nd blank 252 has a fiber sheet 260 including fibers formed of a paper-based raw material. Further, a resin material is attached to the fibers forming at least a part of the inside of the fiber sheet. In the examples of fig. 18A, 18B, 19A, and 19B, the 1 st and 2 nd blanks have fiber sheets 260 including fibers formed from paper-based raw materials.

(modification 2 of embodiment 5)

In the example of fig. 15A and 15B, the side wall 203 is formed so as to taper toward the lower side (toward the-Z direction) and the tip end becomes smaller (smaller in cross-sectional inner diameter), but this is a preferable example, and the side wall 203 may be formed so as to taper toward the lower side and the tip end becomes larger (larger in cross-sectional inner diameter). The side wall 203 may be formed so as to be neither tapered nor tapered toward the lower side (the inside diameter of the cross section is constant), or the side wall 203 may be formed so as to have a portion (a portion where the inside diameter of the cross section changes) tapered and tapered toward the lower side (modification 2 of embodiment 5). The same applies to embodiment 6 to embodiment 8 described below with respect to modification 2 of embodiment 5. The cross section represents a cross section of the side wall portion observed when the side wall portion is cut by a plane normal to the vertical direction. The cross-sectional inner diameter represents the diameter on the inner peripheral surface side in the case where the cross-sectional surface (cross-section) is substantially annular.

(modification 3 of embodiment 5)

The top cover portion 202 of the lid 201 of embodiment 5 may be configured as described in embodiments 2 to 4 (modification 3 of embodiment 5). Therefore, in modification 3 of embodiment 5, the cap portion 202 may have a structure corresponding to the opening forming portion 20 (corresponding to embodiment 2), a structure corresponding to the window portion 40 (corresponding to embodiment 3), a structure corresponding to the ridge portion 43 (corresponding to embodiment 4), and a combination of these structures. The cover 201 of embodiment 5 is not prohibited from being provided with the configuration corresponding to the modification examples shown in embodiment 1 and embodiment 2. The same applies to embodiment 6 to embodiment 8 described below with respect to modification 3 of embodiment 5. In the cover 201 of modification 3 of embodiment 5, the structure of the insertion port 219 may be omitted.

(modification 4 of embodiment 5)

In the cover 201 of embodiment 8, as shown in fig. 20A to 20B, the curved portion 204 may be constituted by the protruding portion 226. Further, the protruding portion 225 may be formed at or near an end portion (outer end portion 228B) closer to the side wall portion 203 among the end portions (inner end portion 228A, outer end portion 228B) of the protruding portion 226.

(extension)

In the example of the lid 201 of the modification example of the 8 th embodiment shown in fig. 20A to 20B, the protruding portion 226 is formed as a structure (protruding structure) in which a predetermined region on the outer peripheral end side of the top lid portion 202 protrudes obliquely upward, but the protruding direction of the protruding portion 226 may be upward or may be transverse (the planar direction of the top lid portion 202). The inner surface 226A side of the protruding portion 226 serves as a sunk portion (sunk portion 227). The shape of the sinking portion 227 corresponds to the shape of the protruding portion 26. This can be achieved according to the shape of the mold when the lid 201 is formed from the blank 250. The size of the recess 227 is preferably a size that can fit the rim 103 of the container 101. When the size of the depressed portion 227 is such that the lid 201 is used as the capped container 150, the rim 103 substantially enters the depressed portion 227, and the outer end portion of the rim 103 (in the example of fig. 20, the outer peripheral surface portion 111 in the rim 103) can be brought into surface contact with the depressed portion 227, so that the lid 201 can be easily and firmly attached to the rim 103 of the container 101.

(convex portion)

As shown in the example of fig. 20A to 20B, the side wall 203 may be formed with a convex portion 225. The convex portion 225 is defined as a portion protruding in an inward direction (a direction of the center CT, a direction from the outer peripheral surface 203B toward the inner peripheral surface 203A of the side wall portion 203) at a predetermined position of the side wall portion 203, for example. The convex portion 225 is preferably a ridge portion formed in a stripe shape so as to surround the inner peripheral surface of the side wall portion 203. A convex structure of the convex portion 225 may be formed on the inner peripheral surface side of the side wall portion 203, and a concave portion 224 may be formed on the outer peripheral surface 203B side of the side wall portion 203 at a position corresponding to the position where the convex structure is formed. By forming such a structure, the shape of the side wall 203 can be stabilized.

[ embodiment 6 ]

[6-1 Structure ]

As shown in fig. 16A and 16B, the lid 201 of embodiment 6 is similar to embodiment 5 in that it has a top cover 202 and a side wall 203 and can be fitted to a container. The lid 201A of embodiment 6 has a structure in which a part of the side wall 203 extends to the upper and lower sides of the top lid 202. The side wall portion 203 has an annular (including cylindrical) shape, and has an upper wall 205 and a lower wall 206. The lower wall 206 extends to the lower side of the top cover portion 202, and the upper wall 205 is formed by a portion of the side wall 203 other than the lower wall 206. In the example of fig. 16A and 16B, the side wall 203 is formed so as to taper toward the lower side and the tip. In the example of fig. 16A and 16B, the penetrating portion 210 is formed at a predetermined position of the top cover portion 202, but this is an example.

(component for forming the Top cover portion and the side wall portion respectively)

In embodiment 6, as shown in modification 1 of embodiment 5, the top cover portion 202 and the side wall portion 203 are formed of separate members. In the example of fig. 16A and 16B, the lid 201 includes a top lid portion forming member 222 and a side wall portion forming member 223 as the separate members, and includes a joint portion for joining the top lid portion forming member 222 and the side wall portion forming member 223.

(Top cover portion Forming Member)

The top cover portion forming member 222 includes a 1 st portion (1 st portion 231 of the top cover portion forming member 222) corresponding to the top cover portion 202, and a 2 nd portion (2 nd portion 232 of the top cover portion forming member 222) extending from the outer peripheral end of the 1 st portion 231, and the 2 nd portion 232 becomes the joining margin portion 230 shown in modification 1 of embodiment 5. In the example of fig. 16A, the 2 nd portion 232 of the top cover portion forming member 222 is a portion (standing portion) standing obliquely upward or in a right upward direction from the outer peripheral end of the 1 st portion 231 in the state of the cover 201, and the 2 nd portion 232 is a portion of the side wall portion 203 in the state where the 2 nd portion 232 is joined to the side wall portion forming member 223.

(side wall Forming Member)

The side wall portion forming member 223 is formed in a ring shape (including a cylindrical shape), and has a portion (upper forming portion) where the upper wall 205 is formed and a portion (lower forming portion) where the lower wall 206 is formed. The upper portion forming portion has a portion (1 st contact wall portion 233) that contacts at least the outer surface side with respect to the joining margin portion 230 that becomes the 2 nd portion 232 of the top cover portion forming member 222.

In the example of fig. 16A and 16B, the upper wall 205 (upper forming portion) has a 1 st contact wall portion 233, a portion (2 nd contact wall portion 234) that contacts the joint margin portion 230 that is the 2 nd portion 232 of the top cover portion forming member 222 on the inner surface side, and a continuous portion 235 that connects the 1 st contact wall portion 233 and the 2 nd contact wall portion 234, and the continuous portion 235 covers the upper end surface of the joint margin portion 230 that is the 2 nd portion of the top cover portion forming member 222. The lower end of the 2 nd contact wall 234 is located on the upper surface side of the 1 st portion 231 of the top cover portion forming member 222, and is slightly separated from the 1 st portion 231 in the example of fig. 16A and 16B. However, this is an example, and the lower end of the 2 nd contact wall portion 234 may be in contact with the upper surface side of the 1 st portion 231 of the top cover portion forming member 222.

In the example of fig. 16A and 16B, the lower wall 206 (lower forming portion) is a portion extending downward (obliquely downward in fig. 16A and 16B) with the lower end of the 1 st contact wall portion 233 as the base end. The lower wall 206 (lower forming portion) is preferably located below the lower surface of the 1 st portion 231 of the top cover portion forming member 222, for example, with respect to the position in the up-down direction.

(blank)

The lid 201 of embodiment 6 can be formed by machining a blank. As the blanks, blanks (referred to as 1 st blank and 2 nd blank, respectively, as described in modification 1 of embodiment 5) for forming the top cover portion forming member 222 and the side wall portion forming member 223 can be used. At least one blank selected from the group consisting of the 1 st blank and the 2 nd blank may be formed in the same manner as the blank 30 described above in modification 1 of embodiment 5.

As the 1 st blank for forming the top cover portion forming member 222, a blank similar to the 1 st blank 251 described in modification 1 of embodiment 5 may be used, or a sheet having a shape formed so that the joint margin portion 230 further matches the shape of the top cover portion 202 may be used. The top cover portion forming member 222 preferably forms the 1 st portion 231 and the standing portion (the 2 nd portion 232 serving as the joining margin portion) corresponding to the top cover portion 202 by bending and forming the 1 st blank. That is, the 2 nd portion 232 is preferably formed by bending the 1 st blank upward at the position of the peripheral edge of the 1 st portion 231 (the base end of the joining margin portion 230).

As the 2 nd material, the same material as the 2 nd material 252 described in modification 1 of embodiment 5 may be used, or a sheet formed in a fan shape may be used. By folding back the portion of the annular body, which is formed at the upper end side of the annular body by joining the end edge portion of the 2 nd blank, inward at the position corresponding to the continuous portion 235, the 1 st contact wall portion 233, the 2 nd contact wall portion 234, and the continuous portion 235 can be formed, the upper forming portion (the structural portion corresponding to the upper wall 205) can be formed, and the lower forming portion (the structural portion corresponding to the lower wall 206) can be formed. The side wall portion forming member 223 is formed by the formation of the upper and lower forming portions. Further, at least the 1 st contact wall portion 233 and the 2 nd contact wall portion 234 are bonded to the joining margin portion 230. In the example of fig. 16B, the 1 st contact wall portion 233, the 2 nd contact wall portion 234, and the continuous portion 235 are bonded to the joining margin portion 230, forming a bonded portion.

In manufacturing the lid 201, the annular body described above formed from the 2 nd blank is preferably used. The lower end of the joint margin portion 230 (the 2 nd portion 232) of the cap portion forming member 222 is aligned with the boundary position between the lower portion forming portion and the upper portion forming portion (the boundary position between the upper wall 2505 and the lower wall 206) in the inner peripheral surface of the annular body, and the joint margin portion 230 is made to face the inner peripheral surface of the annular body. Then, the portion of the annular body on the upper end side is folded back inward at the position corresponding to the continuous portion 235 in the annular body as described above, thereby covering the joint margin portion 230 from the upper end side. Then, the joining margin portion 230 is joined to the annular body serving as the side wall portion forming member 223 so as to be sandwiched between the 1 st contact wall portion 233 and the 2 nd contact wall portion 234. Thereby, the side wall portion forming member 223 is formed and the lid 201 is obtained.

[6-2 action and Effect ]

According to the lid 201 of embodiment 6, as in embodiment 5, the occurrence of a fear of shape recovery after shape deformation (forming) when the lid 201 is obtained by manufacturing the top cover portion forming member 222 and the side wall portion forming member 223 from the material (1 st material, 2 nd material) can be suppressed.

[7 th embodiment ]

[7-1 Structure ]

As shown in fig. 17A and 17B, the lid 201 of embodiment 7 is similar to embodiment 5 in that it has a top cover 202 and a side wall 203 and can be fitted to a container. The lid 201 of embodiment 7 has a structure in which a part of the side wall 203 extends to the upper and lower sides of the top lid 202. The side wall portion 203 has an annular (including cylindrical) shape, and has an upper wall 205 and a lower wall 206. The lower wall 206 extends to the lower side of the top cover portion 202, and the upper wall 205 is formed by a portion of the side wall 203 other than the lower wall 206. In the example of fig. 17A and 17B, the side wall 203 is formed so as to taper toward the lower side and the tip. In the example of fig. 17A and 17B, the penetrating portion 210 is formed at a predetermined position of the top cover portion 202, but this is an example.

In embodiment 7, as shown in embodiment 5 in modification 1 and embodiment 6, the top cover portion 202 and the side wall portion 203 are formed of separate members. In the example of fig. 17A and 17B, the lid 201 includes a top lid section forming member 222 and a side wall section forming member 223 as the separate members, and includes a joint portion for joining the top lid section forming member 222 and the side wall section forming member 223.

(Top cover portion Forming Member)

The top cover portion forming member 222 includes a 1 st portion (1 st portion 231 of the top cover portion forming member 222) corresponding to the top cover portion 202 and a 2 nd portion (2 nd portion 232 of the top cover portion forming member 222) extending from the outer peripheral end of the 1 st portion 231, and the 2 nd portion 232 becomes the joining margin portion 230 shown in modification 1 of embodiment 5. In the example of fig. 16A, the 2 nd portion of the top cover portion forming member 222 is a portion (hanging portion) extending obliquely downward or directly downward from the outer peripheral end of the 1 st portion 231, and the 2 nd portion 232 is a portion of the side wall portion 203 in a state where the 2 nd portion 232 is joined to the side wall portion forming member 223.

(side wall Forming Member)

The side wall portion forming member 223 is formed in a ring shape (including a cylindrical shape), and has a portion (upper forming portion) where the upper wall 205 is formed and a portion (lower forming portion) where the lower wall 206 is formed. The lower portion forming portion has a portion (lower portion 1 st contact wall portion 237) that contacts at least the outer surface side with respect to the joining margin portion 230 that becomes the 2 nd portion 232 of the top cover portion forming member 222.

In the example of fig. 17A and 17B, the lower forming portion includes a lower 1 st contact wall 237, a portion (lower 2 nd contact wall 238) that contacts the joint margin portion 230 that is the 2 nd portion 232 of the top cover portion forming member 222 on the inner surface side, and a lower end continuous portion 239 that connects the lower 1 st contact wall 237 and the lower 2 nd contact wall 238, and the lower end continuous portion 239 covers the lower end surface of the joint margin portion 230 that is the 2 nd portion 232 of the top cover portion forming member 222. The upper end of the lower 2 nd contact wall 238 is located on the lower surface (facing surface 273) side of the 1 st portion 231 of the top cover portion forming member 222, and in the example of fig. 17A and 17B, is preferably separated from the 1 st portion 231. Preferably, the rim 103 (e.g., a portion of the outer peripheral surface of the curled portion) of the container 101 is capable of entering between the 1 st portion and the upper end of the lower 2 nd contact wall 238.

In the example of fig. 17A and 17B, the upper wall 205 (upper forming portion) is a portion extending upward (obliquely upward in fig. 17B) with the upper end of the lower 1 st contact wall 237 as the base end. The upper wall 205 (upper forming portion) is preferably located on the upper side of the upper surface of the 1 st portion 231 of the top cover portion forming member 222, for example, with respect to the up-down direction. As shown in the example of fig. 17A and 17B, the upper forming portion is preferably formed with a curled portion (side wall upper end curled portion 236) on the upper end side thereof. In this case, the state in which the end face of the blank (the 2 nd blank for forming the side wall portion forming member 223) formed at the upper end of the upper portion forming portion is exposed can be suppressed, and even when the user sticks the mouth to the end face of the blank to suck the content in the container 101, the user can suppress the sense of discomfort that occurs with the mouth contacting the end face of the blank. In addition, by forming the side wall upper end curled portion 236, it is difficult for the liquid to contact a portion of the side wall portion 203 corresponding to the end face of the blank.

(blank)

The lid 201 of embodiment 7 can be formed by machining a blank. As the blanks, blanks (referred to as 1 st blank and 2 nd blank, respectively, as described in modification 1 of embodiment 5) for forming the top cover portion forming member 222 and the side wall portion forming member 223 can be used. At least one blank selected from the group consisting of the 1 st blank and the 2 nd blank may be formed in the same manner as the blank 30 described above in modification 1 of embodiment 5.

As the 1 st blank for forming the top cover portion forming member 222, a blank similar to the 1 st blank 251 described in modification 1 of embodiment 5 may be used, or a sheet having a shape formed so that the joint margin portion 230 further matches the shape of the top cover portion 202 may be used. The cover portion forming member 222 preferably forms the 1 st portion 231 corresponding to the cover portion 202 and the 2 nd portion 232 serving as the joining margin portion 230 by bending and forming the 1 st blank. That is, the 2 nd portion 232 is preferably formed by bending the 1 st blank in a downward direction at the position of the peripheral edge of the 1 st portion 231.

As the 2 nd material, the same material as the 2 nd material 252 described in modification 1 of embodiment 5 may be used, or a sheet formed in a fan shape may be used. The lower end side portion of the annular body formed by joining the end edge portions of the 2 nd material is folded back inward at a position corresponding to the lower end side continuous portion 239, whereby the lower 1 st contact wall portion 237, the lower 2 nd contact wall portion 238, and the lower end side continuous portion 239 can be formed, the lower portion forming portion (lower portion wall 206) can be formed, and the upper portion forming portion (upper portion wall 205) can be formed. The side wall portion forming member 223 is formed by the formation of the lower portion forming portion and the upper portion forming portion.

In manufacturing the lid 201, the annular body formed from the 2 nd blank is preferably used. The upper end of the joining margin portion 230 (the 2 nd portion 232) of the top cover portion forming member 222 is aligned with the boundary position between the lower portion forming portion and the upper portion forming portion (the boundary position between the upper wall 205 and the lower wall 206) in the inner peripheral surface of the annular body, and the joining margin portion 230 is made to face the inner peripheral surface of the annular body. Further, as described above, the lower end portion of the annular body is folded back inward at the position corresponding to the lower end continuous portion 239, thereby covering the joint margin portion 230 from the lower end side. The joining margin portion 230 is joined (bonded) to the lower forming portion (the annular body forming the side wall portion forming member 223) so as to be sandwiched between the lower 1 st contact wall portion 237 and the lower 2 nd contact wall portion 238. Thereby, the side wall portion forming member 223 is formed and the lid 201 is obtained.

[7-2 action and Effect ]

According to the lid 201 of embodiment 7, as in embodiment 5, the occurrence of a fear of shape recovery after shape deformation (forming) when the lid 201 is obtained by manufacturing the top cover portion forming member 222 and the side wall portion forming member 223 from the material (1 st material, 2 nd material) can be suppressed.

[5 application example ]

(example 1)

As shown in fig. 14A and 14B, the lid 1 of embodiment 1 can be used for a container 150 with a lid. Fig. 14A is a perspective view showing an example in which the lid 1 of embodiment 1 is joined to the rim 103 of the container 101 having the opening 102 formed at the upper end, which forms the outer periphery of the opening 102, so that the container 101 is brought into contact with the lid 1 (the rim 103 is brought into contact with the portion of the opposite surface). Fig. 14B is a cross-sectional view schematically showing a state of a longitudinal section of the line I-I of fig. 14A. The description of the capped container 150 will be continued with reference to fig. 14A and 14B.

(Container with lid)

The capped container 150 has a joint 151 where the container 101 is joined to the cap 1, and a region of the cap 1 where the joint 151 is formed becomes a joint region R. The method of joining the lid 1 and the container 101 is not particularly limited, and a joining method such as a press-bonding method or a hot-melt coating method (heat sealing) can be suitably used. Hereinafter, a case will be described in which the lid 1 of embodiment 1 is used for the container 150 with a lid.

In the example shown in fig. 14A and 14B, the container 101 includes: a container body 110 having a cylindrical side wall 104 and a bottom 107 which are thickened in diameter in the upward direction (tapered in the downward direction), and having a space 105 formed therein; and an opening 102 that opens at an upper end of the container body 110 (an upper end of the side wall 104). Although not shown, the opening 102 of the container 101 is formed in a circular shape. However, the container 101 shown here is an example, and the structure of the container 101 is not limited. For example, the container 101 may have a rectangular opening 102. The container 101 may be a container that can cover the opening 102 with the lid 1. The article stored in the interior (space 105) of the container 101 is not particularly limited, and examples thereof include a liquid article, a solid article, and a combination thereof.

In the container shown in fig. 14A and 14B, the rim 103 forming the opening 102 (surrounding the opening 102) has a flange. The flange portion formed on the rim 103 may be a curled portion 108 formed by rolling up the member forming the container body 110 outward as shown in fig. 14A, 14B, or may be a portion (a brim portion) extending in the outward direction on a plane.

The lid 1 of embodiment 1 may be combined with the container 101 having the opening 102.

(example 2)

As shown in fig. 21, the lid 1 of embodiment 5 can be used for a container 350 with a lid. Fig. 21 is a cross-sectional view showing an example in which the lid body 1 of embodiment 5 is fitted to the rim 103 of the container 101 having the opening 102 formed at the upper end, which forms the outer periphery of the opening 102, so that the container 101 is brought into contact with the lid body 1 (the rim 103 is brought into contact with the portion of the top lid portion 202).

The capped container 350 can be obtained by fitting the cap 201 to the rim 103 so as to cover the opening 102 of the container 101.

The lid 1 of embodiment 5 may be combined with the container 101 having the opening 102.

The content shown in the above [5 application example ] (example 1) is not limited to the case of using the lid 1 of embodiment 1. The lid-equipped container 150 (not shown) formed by joining the lid 1 of embodiment 1 to the container 101 can be used in the same manner as in embodiments 2 to 4.

The content shown in the above [5 application example ] (example 2) is not limited to the case of using the lid 1 of embodiment 5. The lid-attached container 350 (not shown) formed by joining the lid 201 of embodiment 5 to the container 101 can be used in the same manner as in embodiments 6 to 8.

As described above, the cover 1, 201 and the like of the present invention can be applied to such various forms of covers 1, 201 and the like. The present invention is applicable to covers 1 and 201 and the like having other forms than the above. The cover of the present invention has been described in detail above, but the above description is merely illustrative of the cover of the present invention and is not limited thereto. Accordingly, the present invention may be modified as appropriate within the scope of the present invention. The structure of the cover described above may be used independently of the structure of the cover of each example, or may be appropriately combined and applied.

Based on the description of the present specification above, the present invention may employ the structures shown in [ E1] to [ E22] below.

[E1] A lid body formed to be capable of contacting a container having an edge portion, and formed from a blank having a fiber sheet including fibers formed from a paper-based raw material, wherein a resin material is attached to at least a part of the fibers forming the inside of the fiber sheet.

[E2] The lid body according to [ E1] above, wherein the lid body has a joint region corresponding portion corresponding to a region joined to the container along the edge portion of the container, and a lid region corresponding portion formed of a portion located inward of the joint region corresponding portion, and the resin material is attached to the fibers forming at least a part of the inside of the fiber sheet at least in a portion corresponding to the joint region corresponding portion.

[E3] The cover according to [ E1] or [ E2], wherein the cover includes a penetration portion cut from one surface to the other surface of the preform, and the fiber sheet has a cross section exposed at a peripheral surface portion of the penetration portion and the resin material is exposed at least a part of the cross section.

[E4] The cover according to [ E3] above, wherein the cover has an inclined portion which is inclined upward in a direction away from the end portion with the peripheral surface portion of the through portion being an end portion.

[E5] The cover according to [ E3] or [ E4], wherein the density of the fibers constituting the fiber sheet in the inclined portion increases as the cover approaches the end portion of the inclined portion.

[E6] The lid body according to any one of [ E3] to [ E5] as defined in [ E2], wherein the lid region corresponding portion is provided with a weakened portion guiding a cutting position in the lid region corresponding portion, and the weakened portion has a plurality of the penetrating portions and at least one continuous portion formed between at least two of the penetrating portions.

[E7] The cover according to [ E7] above, wherein the continuous portion has a half-cut structure.

[E8] The cover according to [ E6] or [ E7], wherein the weakened portion has a plurality of penetrating portions formed radially around the continuous portion.

[E9] The lid according to any one of [ E3] to [ E8] as defined in [ E2], wherein the lid region corresponding portion includes: a base portion having a small opening portion having an opening area smaller than an opening portion surrounded by the rim portion of the container; a small cover part for opening and closing the small opening part; and a hinge portion connecting the base portion and the small lid portion, wherein the small lid portion is configured to be rotatable about the hinge portion with respect to the base portion, and at least a part of the penetrating portion is formed at a boundary position between an outer peripheral edge of the small lid portion and the opening edge of the small opening portion.

[E10] The cap according to [ E9], wherein a grip portion is provided on the upper surface side of the small cap portion.

[E11] The lid according to [ E10] above, wherein the grip portion has a tab member, and the tab member is joined to an upper surface side of the small lid portion.

[E12] The lid according to any one of [ E9] to [ E11], wherein the lid has a holding structure for holding the small lid portion in a state in which the small opening portion is opened by rotating the small lid portion about the hinge portion with respect to the base portion.

[E13] The cover according to any one of [ E9] to [ E12], wherein an extension portion is formed on an outer peripheral edge of the base portion, and the base portion and the extension portion are integrally formed from the blank.

[E14] The lid according to [ E13] above, wherein the hinge portion is formed between the extension portion and the tip end of the small lid portion.

[E15] The lid according to [ E9] above, wherein the lid has a holding structure for holding the small lid portion in a state in which the small lid portion is rotated about the hinge portion with respect to the base portion to open the small opening portion, a pinching portion is provided on an upper surface side of the small lid portion, a claw portion is provided on the pinching portion, an extension portion is formed on an outer peripheral edge of the base portion, and the extension portion and the receiving portion form the holding structure.

[E16] The cover according to any one of [ E1] to [ E15] above, wherein the cover is formed with a raised portion.

[E17] The cover according to any one of [ E1] to [ E16] above, wherein the cover is formed with a window portion.

[E18] The cover according to any one of [ E1] to [ E17], wherein at least a part of the resin material is impregnated between at least a part of the fibers.

[E19] The cap according to any one of [ E1] to [ E18] above, wherein the cap is formed so as to be capable of being joined and/or fitted to a container having a rim.

[E20] A container with a lid comprising the lid of any one of [ E1] to [ E19] and the container having the rim, wherein the lid is bonded to the container.

[E21] A combination of a lid and a container comprising the lid of any one of [ E1] to [ E19] and the container having the rim.

[E22] A method of manufacturing a cover, comprising: an impregnation step of impregnating the fiber sheet with an impregnating solution containing a resin material; and a drying step of drying the fiber sheet containing the impregnating solution.

[E23] The method for producing a cover according to [ E22] above, wherein the shaping treatment for shaping the fiber sheet containing the impregnating solution is performed during or before the drying step.

Description of the reference numerals

1: cover body

2: base part

2A: outer peripheral edge

3: small cover part

3A: outer peripheral edge

4: hinge part

5A: junction region corresponding portion

5B: cover region corresponding portion

5C: cover region non-forming portion

6: small opening part

6A: opening edge

7: extension part

7A: outer peripheral edge

8: cutting part

10: penetration part

11: peripheral surface part

12: end portion

13: inclined part

13A: end portion

14: brittle weakened portion

15: continuous portion

16: half-cut part

17: connection structure

19: insertion opening

20: opening forming part

21: holding part

22: pull tab member

22A: one end part

22B: another end portion

23: pull tab joint

24: claw portion

25: bearing part

26: extension part

30: blank material

31: fiber sheet

31A: fiber

32: resin material

40: window part

41: opening part in cover

42: sheet for window

43: raised part

43A: tip end portion

44: recess portion

46: bonding part

50: outer peripheral edge

72: exposed surface

73: opposite surface

74: base end portion

75: front end edge part

101: container

102: an opening part

103: edge part

104: side wall

105: space part

107: bottom part

108: crimping part

110: container body

111: outer peripheral surface portion

150: container with cover

151: joint part

201: cover body

202: top cover part

203: side wall portion

203A: an inner peripheral surface

203B: an outer peripheral surface

204: bending part

205: upper wall

206: lower wall

208: cutting part

210: penetration part

219: insertion opening

222: top cover part forming member

223: sidewall forming member

224: concave part

225: convex part

226: extension part

226A: inner surface

227: sink part

228A: inner end portion

228B: outer end portion

230: joint allowance part

231: part 1

232: part 2

233: 1 st contact wall portion

234: 2 nd contact wall portion

235: continuous portion

236: upper end curled portion of side wall

237: lower 1 st contact wall

238: lower part 2 nd contact wall part

239: lower end side continuous portion

250: blank material

251: 1 st blank

252: blank 2

253: end edge part

260: fiber sheet

272: exposed surface

273: opposite surface

274: contact portion

274A: 1 st contact portion

274B: 2 nd contact portion

350: container with cover

2505: upper wall

CT: center of the machine

D1: extension distance

D2: separation distance

F1: arrows

R: and a junction region.

Claims

1. A cover body, wherein,

the lid is formed to be capable of contacting a container having a rim, and is formed from a blank,

the blank has a fibrous sheet containing fibers formed from a paper-based raw material,

a resin material is attached to the fibers forming at least a part of the interior of the fiber sheet.

2. The cap of claim 1, wherein,

the cover body has:

a joining region corresponding portion corresponding to a region joined to the container along the rim portion of the container; and

a lid region corresponding portion constituted by a portion located inside with respect to the joint region corresponding portion,

the resin material is attached to the fibers forming at least a part of the inside of the fiber sheet at least in a portion corresponding to the joint region.

3. The cap of claim 2, wherein,

the cover body is provided with a penetrating part cut from one surface to the other surface of the blank,

at the peripheral surface portion of the penetration portion, a cross section of the fiber sheet is exposed, and at least a part of the cross section is exposed.

4. The cover of claim 3, wherein,

the lid body has an inclined portion that has an end portion of the peripheral surface portion of the through portion and is inclined upward in a direction away from the end portion.

5. The cover of claim 4, wherein,

the closer to the end portion of the inclined portion, the higher the density of the fibers constituting the fiber sheet in the inclined portion.

6. The cover of claim 3, wherein,

the cover region corresponding portion is provided with a weakened portion for guiding the cutting position in the cover region corresponding portion,

the weakened portion has a plurality of the through portions and at least one continuous portion formed between at least two of the through portions.

7. The cover of claim 6, wherein,

the continuous portion has a half-cut configuration.

8. The cover of claim 6, wherein,

the weakened portion is formed radially with a plurality of the penetrating portions around the continuous portion.

9. The cover of claim 3, wherein,

the cover region corresponding portion includes: a base portion having a small opening portion having an opening area smaller than an opening portion surrounded by the rim portion of the container; a small cover part for opening and closing the small opening part; and a hinge portion connecting the base portion and the small cover portion,

the small cover part is configured to be rotatable relative to the base part with the hinge part as an axis,

at least a part of the penetrating portion is formed at a boundary position between an outer peripheral edge of the small lid portion and an opening edge of the small opening portion.

10. The cap of claim 9, wherein,

A holding part is arranged on the upper surface side of the small cover part.

11. The cover of claim 10, wherein,

the grip portion has a pull tab member,

the tab member is joined to the upper surface side of the small lid portion.

12. The cap of claim 9, wherein,

the lid body has a holding structure that holds the small lid portion in a state in which the small opening portion is opened by rotating the small lid portion about the hinge portion with respect to the base portion.

13. The cap of claim 9, wherein,

an extension is formed at the outer circumference of the base,

the base and the extension are integrally formed from the blank.

14. The cover of claim 13, wherein,

the hinge portion is formed between the extension portion and the tip end of the small cover portion.

15. The cap of claim 9, wherein,

the cover body has a holding structure for holding the small cover portion in a state where the small opening portion is opened by rotating the small cover portion relative to the base portion about the hinge portion,

a holding part is arranged on the upper surface side of the small cover part,

the holding part is provided with a claw part,

An extension is formed at the outer circumference of the base,

the extension and the jaw form the retention feature.

16. The cap of claim 1, wherein,

the cover body is formed with a bulge.

17. The cap of claim 1, wherein,

at least a portion of the resin material is impregnated between at least a portion of the fibers.

18. A capped container, comprising:

the cover of claim 1; and

the container having the portion is provided with a plurality of openings,

the capped container joins the cap to the container.

19. A combination of a lid and a container, comprising:

the cover of claim 1; and

the container having the rim.

20. A method for manufacturing a cover body comprises the following steps:

an impregnation step of impregnating the fiber sheet with an impregnating solution containing a resin material; and

and a drying step of drying the fiber sheet containing the impregnating solution.

21. The method for manufacturing a cap according to claim 20, wherein,

and a shaping treatment for shaping the fiber sheet containing the impregnating solution is performed during or before the drying step.