WO2021057912A1 - 一种盖子及其制备方法 - Google Patents

一种盖子及其制备方法 Download PDF

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Publication number
WO2021057912A1
WO2021057912A1 PCT/CN2020/117808 CN2020117808W WO2021057912A1 WO 2021057912 A1 WO2021057912 A1 WO 2021057912A1 CN 2020117808 W CN2020117808 W CN 2020117808W WO 2021057912 A1 WO2021057912 A1 WO 2021057912A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
lid
protrusion
detachable plug
cup
Prior art date
Application number
PCT/CN2020/117808
Other languages
English (en)
French (fr)
Inventor
仝骥
李金萌
刘致嘉
Original Assignee
江苏绿森包装有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201910908920.6A external-priority patent/CN110742464B/zh
Priority claimed from CN201921601004.XU external-priority patent/CN211212466U/zh
Application filed by 江苏绿森包装有限公司 filed Critical 江苏绿森包装有限公司
Priority to US17/762,540 priority Critical patent/US20220380095A1/en
Priority to JP2022519190A priority patent/JP2022550342A/ja
Priority to CA3152094A priority patent/CA3152094A1/en
Priority to AU2020355366A priority patent/AU2020355366A1/en
Priority to KR1020227013613A priority patent/KR20220065056A/ko
Priority to EP20867198.2A priority patent/EP4035570A4/en
Priority to MX2022003622A priority patent/MX2022003622A/es
Publication of WO2021057912A1 publication Critical patent/WO2021057912A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G19/00—Table service
    • A47G19/22—Drinking vessels or saucers used for table service
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/12—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having removable closures
    • B65D47/14—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having removable closures and closure-retaining means
    • B65D47/141—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having removable closures and closure-retaining means for stoppers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G19/00—Table service
    • A47G19/22—Drinking vessels or saucers used for table service
    • A47G19/2205—Drinking glasses or vessels
    • A47G19/2266—Means for facilitating drinking, e.g. for infants or invalids
    • A47G19/2272—Means for facilitating drinking, e.g. for infants or invalids from drinking glasses or cups comprising lids or covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/50—Non-integral frangible members applied to, or inserted in, preformed openings, e.g. tearable strips or plastic plugs
    • B65D17/506—Rigid or semi-rigid members, e.g. plugs
    • B65D17/507—Rigid or semi-rigid members, e.g. plugs moulded in situ, e.g. during production of container
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/0202—Removable lids or covers without integral tamper element
    • B65D43/0204—Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/0212—Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the outside, or a part turned to the outside, of the mouth
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/12—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having removable closures
    • B65D47/14—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having removable closures and closure-retaining means
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/16—Devices preventing loss of removable closure members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/46—Applications of disintegrable, dissolvable or edible materials
    • B65D65/466—Bio- or photodegradable packaging materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J1/00—Fibreboard
    • D21J1/04—Pressing
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J7/00—Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G2400/00—Details not otherwise provided for in A47G19/00-A47G23/16
    • A47G2400/10—Articles made from a particular material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00046—Drinking-through lids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/00074—Shape of the outer periphery curved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00305—Other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00527—NO contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
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    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00611—Profiles
    • B65D2543/00629—Massive bead
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
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    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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    • B65D2543/00796—Totality

Definitions

  • the present invention relates to a beverage cup lid, in particular to a lid, such as a decomposable, recyclable and biodegradable beverage cup lid with a detachable stopper and a stopper holder.
  • Plastic #6 is composed of polystyrene, especially when it is heated, it will ooze a known carcinogen and toxin. Therefore, the problem of coffee lids made of plastic #6 is particularly serious because those coffee lids are exposed to the high temperature of hot coffee during their intended use.
  • Plastic #7 is composed of various plastics, such as plastic resins or combinations of other plastics, and has been found to include the chemical toxins bisphenol A (or BPA) and/or bisphenol S (or BPS). BPA and BPS are endocrine disruptors, which can produce adverse developmental effects, reproductive effects, neurological effects, and immunological effects. Therefore, beverage lids made of plastic #7 also have problems.
  • beverage cup lids and other food packaging products made of plastic #6 or plastic #7 also have a significant long-term impact on the environment, because these disposable plastics are not biodegradable and are accumulated in the trash. In the landfill, even if these items are decomposed, it will take hundreds or even thousands of years. At the same time, toxic chemicals seep out from these discarded items and affect the surrounding ecosystems by polluting soil and groundwater. Therefore, there is a need for a disposable beverage cup lid that is decomposable, recyclable and biodegradable.
  • an easy-to-use beverage cup lid for hot or cold drinking cups that is, such a lid that has a lid that can be selectively plugged by a user (for example, with a stopper) Prevent or reduce the possibility of fluid overflow, and in the presence of hot fluid, prevent or reduce the possibility of heat loss through it) straw holes, dispensing openings or "spouts", and in the entire process of the user drinking beverages , The plug will be easily retained by the user.
  • “loose" stoppers for such beverage cup lids are known, such stoppers can easily be misplaced or lost, especially when the user moves repeatedly during the normal course of normal drinking of the beverage in the cup with the lid placed on it. In case of removing and replacing the stopper. Therefore, there is also a need for a beverage cup lid that provides an effective and simple method for retaining the stopper when the stopper is not in use.
  • the present invention solves these and other problems related to the prior art by providing a lid having a lid with a dispensing opening, and a detachable plug integrally formed with the lid at the peripheral edge of the lid, And an integrated groove on the top of the lid.
  • the plug can be separated from the lid along the tear line.
  • the size of the protrusion on the stopper is designed to be friction-fitted in the dispensing opening on the lid so as to plug the dispensing opening.
  • the size of the protrusion on the stopper is also designed to be friction fit in the recess on the top of the cover, so as to retain or accommodate the stopper for subsequent use, thus preventing the loss of the stopper.
  • the lid can be used to create a sealed structure for cups for holding hot or cold beverages including coffee, tea or juice.
  • the lid is a decomposable, recyclable and biodegradable beverage cup lid.
  • Figure 1 is a cross-sectional view of a cup and a lid according to an embodiment of the present invention
  • Figure 2 is a perspective view of a lid with a detachable stopper located at its peripheral edge and integrally formed therewith according to an embodiment of the present invention
  • Figures 3 to 5 are respectively a top view, a side view and a front view of the cover of Figure 2;
  • Figure 6 is a cross-sectional view of the cover of Figure 2 taken along line A-A of Figure 3;
  • Figure 7 is a perspective view of another cover with a detachable plug located at its peripheral edge and integrally formed therewith according to an embodiment of the present invention
  • Figures 8 to 10 are respectively a top view, a side view and a front view of the cover of Figure 7;
  • Figure 11 is a cross-sectional view of the cover of Figure 7 taken along line A-A of Figure 8;
  • Figure 12 depicts an embodiment with a detachable plug at its peripheral edge and integrally formed therewith in an initial state, a blocked state, and an embodiment in a holding state;
  • 13 to 16 are respectively a perspective view, a top view, a side view, and a front view of the cover of FIG. 2 in a blocked state;
  • Figure 17 is a cross-sectional view taken along the line A-A of Figure 3 when the lid of Figure 2 is in a blocked state;
  • 18 to 21 are respectively a perspective view, a top view, a side view, and a front view of the cover of FIG. 7 in a holding state;
  • Fig. 22 is a cross-sectional view taken along line A-A of Fig. 8 when the cover of Fig. 7 is in a holding state;
  • Figure 23 shows an embodiment of a process for forming a lid with a detachable plug located at its peripheral edge and integrally formed therewith;
  • Fig. 24 is a perspective view of another cover having a detachable plug located at its peripheral edge and integrally formed therewith, according to an embodiment of the present invention.
  • Fig. 25 is a structural diagram of a first type of tear line according to an embodiment of the present invention.
  • Fig. 26 is a structural diagram of a second type of tear line according to an embodiment of the present invention.
  • FIGS. 1 to 24 For simplicity and illustrative purposes, the principles of the present invention have been described by referring to various exemplary embodiments of the present invention, and these embodiments may be depicted in FIGS. 1 to 24.
  • the present invention is not limited to the specific examples, embodiments, and methods described herein or other content depicted in the drawings, as these may vary.
  • the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the scope of the present invention. Although specific methods and materials are described, in the practice of the present invention, other methods and materials similar to those described herein can be used.
  • FIG. 1 generally depicts an embodiment of a cup 100 and a lid 110 according to the present invention.
  • the cup 100 and the lid 110 are depicted in an exploded view or a separated view to show respective features.
  • the cup 100 is a hollow container formed by an upper surface 106 of a cup bottom and a cup wall having an inner surface 102 and an outer surface 104.
  • the ridge 108 at the end of the cup wall opposite to the upper surface 106 of the cup bottom 106 defines the opening of the cup 100.
  • the ridge 108 is adapted to interact with a groove 112 formed in the inner surface 114 of the lid 110 to form a cavity 130 in the cup 100.
  • the interaction between the ridge 108 and the groove 112 forms a sealing structure, so that as long as the seal provided by the sealing structure is maintained, the content (for example, liquid) provided in the cavity 130 can only pass through the dispensing port 116. Leave the cavity 130.
  • FIGS. 2 to 6 show an embodiment of the cover 200.
  • the cover 200 has a detachable plug 250 located at the peripheral edge 230 and integrally formed with the cover 200.
  • the cover 200 includes a raised portion 210 surrounding the center portion 220 of the upper surface 241.
  • the raised portion 210 includes a dispensing opening 212 to provide an outlet for the contents of the cup (for example, the cup 100 in FIG. 1) when a sealing structure is formed between the lid 200 and the cup.
  • the cover 200 further includes a recess 222 formed on the upper surface 241 and located in the central portion 220.
  • the recess 222 is used to detachably couple the detachable plug 250 with the protrusion 255 when the detachable plug 250 is separated from the cover 200 to keep the detachable plug 250 near the cover 200 (that is, the recess 222 here serves as the retaining portion of the detachable plug 250 ).
  • the size of the recess 222 is designed such that the protrusion 250 is frictionally fitted in the recess 222 when the detachable plug 250 is separated from the cover 200.
  • the detachable plug 250 is used to separate or separate the cover 200 along the line 260 at the attachment point.
  • the attachment point along the line 260 is specifically a tear line (for example, the tear line 1206 in FIG. 12).
  • the protrusion 255 on the detachable stopper 250 is used to interact with the dispensing opening 212 when the detachable stopper 250 is separated from the cover 200 to form another sealing structure between the protrusion 255 and the dispensing opening 212.
  • the size of the protrusion 255 is designed to be friction fit in the dispensing opening 212 so as to plug the dispensing opening 212.
  • the protruding portion 255 protrudes toward one surface of the detachable plug, and the other surface of the detachable plug away from the protruding portion is provided with a recessed groove corresponding to the protruding portion.
  • the detachable plug 250 of the cover 200 includes a protrusion 255 located on the proximal end along the line 260 near the attachment point.
  • the detachable plug 750 of the cover 700 includes a protrusion 755 located on the opposite distal end 752 along the line 260 of the attachment point.
  • Fig. 24 shows another exemplary structure.
  • a plurality of detachable plugs ie, the detachable plug 2450 and the detachable plug 2460
  • the cover 2400 are integrally formed.
  • the plurality of detachable plugs may have protrusions at different ends.
  • the detachable plug 2450 may have a protrusion at the proximal end
  • the detachable plug 2460 may have a protrusion at the distal end.
  • Those skilled in the art will understand that other structures according to the embodiments of the present invention are also possible.
  • FIG. 12 depicts that the cover 1200 according to an embodiment of the present invention can be in various states.
  • FIG. 12 shows that the lid 1200 may be in an initial state 1225, in which state 1225, the detachable plug 1210 remains integrally formed with the lid 1220 at the tear line 1206.
  • the lid 1200 may be in a blocking state 1235, in which state 1235, the protrusion 1215 of the detachable plug 1210 is inserted into the dispensing opening 1202 of the lid 1200.
  • Figures 13 to 17 depict the cover 200 of Figure 2 in a blocked state.
  • the cover 1200 When the detachable plug 1210 is separated from the cover 1200, the cover 1200 may also be in a holding state 1245, in which the protrusion 1215 is inserted into the recess 1204 formed on the upper surface of the cover 1200.
  • Figures 18 to 22 depict the cover 200 of Figure 2 in a holding state.
  • FIG. 25 shows the first tear line structure.
  • the tear line includes tear connection points 1206a connected to both sides of the detachable plug close to the end of the cover, and located between the two tear connection points and away from the detachable plug.
  • the concave surface 1206b that is recessed on the lid side, the distance from the middle of the concave surface to the outer edge of the lid is greater than the distance from the two ends of the concave surface to the outer edge of the lid; the outer convex part is provided on the outer edge of the lid, and the outer convex part is provided on the side away from the outer edge of the lid
  • the concave surface 1206c the distance from the middle of the concave surface to the middle of the arc-shaped convex surface is greater than the distance from the two ends of the concave surface to the two ends of the arc-shaped convex surface; the concave surface is either a V-shaped concave surface or a U-shaped concave surface.
  • Figure 26 shows the second type of tear line structure.
  • the tear line includes three tear connection points 1206a arranged at intervals and connected between the end of the detachable plug close to the cover and the outer edge of the cover. Two adjacent tears A strip-shaped tear hole 1206d is formed between the connection point, the outer edge of the cover, and the end of the detachable plug near the cover, and the aperture of the strip-shaped tear hole gradually decreases from top to bottom.
  • Figure 23 shows an embodiment of a process for forming a lid with a detachable plug located at its peripheral edge and integrally formed therewith.
  • the preparation method process includes: S1, immersing the slurry forming mold 2330 into the slurry provided in the slurry tank 2310.
  • the slurry is composed of a decomposable or biodegradable plant fiber material.
  • Exemplary plant fiber materials include: wood pulp, sugarcane pulp, reed pulp, bamboo pulp, palm pulp, and the like.
  • S2 The fibers of the slurry (“pulp fibers") 2320 are sucked onto the surface of the slurry forming mold 2330 by means of vacuum suction.
  • the forming mold includes a lid forming cavity and a detachable plug forming cavity located at the peripheral edge of the opening of the lid forming cavity, and the lid forming cavity is in communication with the detachable plug forming cavity.
  • the slurry forming die 2330 can be squeezed using the extrusion die 2340 (for example, using vacuum suction), so that the unprocessed wet cup lid body 2322 has an initial shape, thereby forming a shaped wet cup lid body 2324 .
  • the extrusion die 2340 is used to squeeze the slurry forming die 2330 to further reduce the moisture content of the formed wet cup cover 2324.
  • the transfer die 2350 transfers the formed wet cup cover 2324 to a hot pressing die composed of an upper heating die 2362 and a lower heating die 2364.
  • the hot pressing mold is used to compact and dry the formed wet cup lid body 2324 to form a semi-finished cup lid body 2326.
  • the surface of the semi-finished cup cover body 2326 has enhanced smoothness (relative to the surface smoothness of the wet cup cover body 2324 formed before compression and drying).
  • the compaction and heating by the hot pressing die can also achieve improved dimensional accuracy.
  • vacuum suction is applied during the drying process provided by the hot pressing mold to remove any steam caused by moisture retained by the formed wet cup cover 2324 and reduce the possibility of delamination.
  • the semi-finished cup cover body 2326 is transferred to a cutting mold composed of an upper cutting mold 2372 and a lower cutting mold 2374 to form a finished cup cover body.
  • the cutting mold forms the finished cup cover body by trimming the excess material on the edge of the semi-finished cup cover body 2326.
  • conditional language used herein such as “may”, “may”, “for example,” etc. are generally intended to express that certain embodiments include certain Features, elements, and/or steps, while other embodiments do not include certain features, elements, and/or steps. Therefore, such conditional language is generally not intended to imply that features, elements, and/or steps are in any case necessary for one or more embodiments, and is not intended to imply that one or more embodiments are either with or without User input or prompts necessarily include logic for determining whether these features, elements, and/or steps are included or will be performed in any particular embodiment.

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Abstract

一种盖子（200）及其制备方法。盖子（200）包括分发口（212）、位于盖子（200）的外围边缘（230）处与盖子（200）一体成型的可拆卸塞子（250），以及凹陷（222）。分发口（212）用于当在盖子（200）与杯子（100）之间形成密封结构时为设置在杯子（100）内的内容物提供出口。可拆卸塞子（250）包括突起部（255），且突起部（255）用于与分发口（212）相互作用以在突起部（255）和分发口（212）之间形成另一密封结构。凹陷（222）用于可拆卸地与突起部（255）耦接而将可拆卸塞子（250）保持在盖子（200）附近。

Description

一种盖子及其制备方法 技术领域
本发明涉及饮料杯盖，具体涉及一种盖子，例如具有可拆卸塞子和塞子保持部的可分解、可回收和可生物降解的饮料杯盖。
背景技术
饮料杯盖和其他“一次性塑料制品”通常由塑料#6或者塑料#7制成。塑料#6由聚苯乙烯组成，尤其当其遇热时，会渗出一种已知的致癌物和毒素。因此，由塑料#6制成的咖啡盖的问题特别严重，因为那些咖啡盖在其预期使用的过程中会暴露于热咖啡的高温下。塑料#7由各种塑料，如塑料树脂或者其他塑料的组合组成，并且已发现包括化学毒素双酚A(或者BPA)和/或双酚S(或者BPS)。BPA和BPS是内分泌干扰物，其会产生不良的发育影响、生殖影响、神经影响和免疫学影响。因此，由塑料#7制成的饮料盖同样存在问题。除了这些毒性担忧之外，由塑料#6或者塑料#7制成的饮料杯盖和其他食品包装产品还对环境造成了重大的长期影响，因为这些一次性塑料不可生物降解并且被堆积在在垃圾填埋场里，即使这些物品被分解，也需要数百年甚至数千年。同时，有毒化学物质从这些废弃的物品渗出，并且通过污染土壤和地下水而影响周围的生态系统。因此，需要一种可分解、可回收和可生物降解的一次性饮料杯盖。
除了环保之外，还需要一种用于热饮杯或者冷饮杯的方便使用的饮料杯盖；也就是说，这样的一种盖子，该盖子具有用户可选择性地使用塞子塞住(例如，以防止或者减少流体溢出的可能性，并且在存在热流体的情况下，防止或者减少通过其造成热量损失的可能性)的吸管孔、分发口或者“喷口”，而且在用户喝饮料的整个过程中，塞子会很容易地被用户保留。尽管已知用于这样的饮料杯盖的“松动的”塞子，但是这样的塞子很容易错位或者丢失，特别是在用户在正常饮用其上放置了盖子的杯子中的饮料的正常过程中反复移除和更换塞子的情况下。因此，还需要一种提供在未使用塞子时保持这种塞子的有效且简单的方法的饮料杯盖。
发明内容
本发明通过提供下述盖子来解决了与现有技术相关的这些问题和其他问题，所述 盖子具有分发口的盖子、在所述盖子的外围边缘处与所述盖子一体成型的可拆卸塞子，以及在盖子顶部一体成型的凹槽。所述塞子可以沿着撕裂线与盖子分离。塞子上的突起部的尺寸设计为摩擦配合在盖子上的分发口内从而塞住分发口。塞子上的突起部的尺寸还被设计成摩擦配合在盖子的顶部上的凹陷内，从而保留或者容纳塞子以备后续使用，因此可以防止塞子的丢失。盖子可以用来为用于容纳包括咖啡、茶或果汁的热饮料或冷饮料的杯子创建密封结构。在一些实施例中，所述盖子是可分解、可回收和可生物降解的饮料杯盖。
附图说明
包含在本说明书并且构成本说明书的一部分的附图示出了本发明的各种实施例，并且和上文给出的对本发明的概要描述和下文给出对实施例的详细描述一起用于说明本发明的实施例。在附图中，类似的附图标记用于表示不同视图中的类似部件。
图1是根据本发明的一个实施例的杯子和盖子的截面图；
图2是根据本发明的一个实施例的具有位于其外围边缘处并且与其一体成型的可拆卸塞子的盖子的透视图；
图3至图5分别是图2的盖子的俯视图、侧视图和前视图；
图6是图2的盖子沿着图3的线A-A截取的截面图；
图7是根据本发明的一个实施例的具有位于其外围边缘处并且与其一体成型的可拆卸塞子的另一盖子的透视图；
图8至图10分别是图7的盖子的俯视图、侧视图和前视图；
图11是图7的盖子沿着图8的线A-A截取的截面图；
图12描绘了具有位于其外围边缘处并且与其一体成型的可拆卸塞子的盖子处于初始状态、堵塞状态以及保持状态下的实施例；
图13至图16分别是图2的盖子处于堵塞状态下的透视图、俯视图、侧视图以及前视图；
图17是图2的盖子处于堵塞状态下沿着图3的线A-A截取的截面图；
图18至图21分别是图7的盖子处于保持状态下的透视图、俯视图、侧视图以及前视图；
图22是图7的盖子处于保持状态下沿着图8的线A-A截取的截面图；
图23示出了用于形成具有位于其外围边缘处并且与其一体成型的可拆卸塞子的 盖子的过程的实施例；以及
图24是根据本发明实施例的具有位于其外围边缘处并且与其一体成型的可拆卸塞子的另一盖子的透视图。
图25是根据本发明实施例的第一种撕裂线结构图。
图26是根据本发明实施例的第二种撕裂线结构图。
具体实施方式
出于简化和说明性目的，通过参考本发明的各种示例性实施例描述了本发明的原理，并且这些实施例可以描绘在图1至图24中。本发明并不限于本文所描述的特定示例、实施例和方法或者描绘在附图中的其它内容，因为这些可以变化。另外，本文所使用的术语仅出于描述特定实施例的目的，并非意在限制本发明的范围。尽管描述了具体的方法和材料，然而，在本发明的实践中，可以使用与本文所描述的那些方法和材料类似的其他方法和材料。此外，尽管可以参考本文按照特定顺序呈现的某些步骤来描述的某些方法，但是，在很多情况下，这些步骤可以按照本领域普通技术人员所理解的任何顺序进行，因此这些方法不限于本文所公开的步骤的特定布置。
图1大体上描绘了根据本发明的杯子100和盖子110的一个实施例。在图1中，以分解视图或者分离视图描绘了杯子100和盖子110以示出各自的特征。杯子100是由杯底的上表面106和具有内表面102和外表面104的杯壁形成的中空容器。在杯壁的与杯底106的上表面106相对的端部处的脊部108定义了杯子100的开口。脊部108适于与形成在盖子110的内表面114内的凹槽112相互作用以在杯子100内形成空腔130。脊部108与凹槽112之间的相互作用形成了密封结构，以至于只要由密封结构提供的密封被保持，设置在空腔130内的内容物(例如，液体)就只能经由分发口116离开空腔130。
图2至图6示出了盖子200的一个实施例，盖子200具有位于外围边缘230处并且与盖子200一体成型的可拆卸塞子250。盖子200包括围绕上表面241的中心部220的抬高部210。抬高部210包括分发口212，以在盖子200与杯子之间形成密封结构时为杯子(例如，图1中的杯子100)的内容物提供出口。盖子200还包括形成在上表面241上且位于中心部220内的凹陷222。凹陷222用于当可拆卸塞子250与盖子200分离时可拆卸地与突起部255耦接而将可拆卸塞子250保持在盖子200附近(也即此处的凹陷222作为可拆卸塞子250的保持部)。在一个实施例中，凹陷222的尺寸被 设计成使得当可拆卸塞子250与盖子200分离时突起部250摩擦配合在凹陷222内。
可拆卸塞子250用于在附着点沿线260处与盖子200分离或者分开。在一个实施例中，附着点沿线260具体为撕裂线(例如，图12中的撕裂线1206)。可拆卸塞子250上的突起部255用于在可拆卸塞子250与盖子200分离时与分发口212相互作用以在突起部255与分发口212之间形成另一密封结构。在一个实施例中，突起部255的尺寸被设计成摩擦配合在分发口212内，从而塞住分发口212。在形成上述另一密封结构之后，只要由该另一密封结构提供的密封被保持，就可以消除杯子内容物的出口。
突起部255向可拆卸塞子的一表面突起，在可拆卸塞子远离突起部的另一表面设有与所述的突起部相对应的成型凹陷槽。
图7至图11的盖子700与盖子200之间的比较示出了可拆卸塞子可以根据本发明实施例的各种结构来实施。例如，盖子200的可拆卸塞子250包括位于靠近附着点沿线260的近端上的突起部255。再例如，盖子700的可拆卸塞子750包括位于附着点沿线260相对的远端752上的突起部755。
图24示出了另一示例性结构。其中，多个可拆卸塞子(即，可拆卸塞子2450和可拆卸塞子2460)与盖子2400一体成型。在一个实施例中，多个可拆卸塞子可具有位于在不同端部的突起部。例如，可拆卸塞子2450可以具有位于近端的突起部，而可拆卸塞子2460可以具有位于远端的突起部。本领域技术人员将理解的是，根据本发明实施例的其他结构也是可能的。
图12描绘了根据本发明实施例的盖子1200可以处于各种状态。例如，图12示出了盖子1200可以处于初始状态1225，在该状态1225下，可拆卸塞子1210在撕裂线1206处保持与盖子1220一体成型。当可拆卸塞子1210与盖子1200分离时，盖子1200可以处于堵塞状态1235，在该状态1235下，可拆卸塞子1210的突起部1215被插入到盖子1200的分发口1202中。图13至图17描绘了图2的盖子200处于堵塞状态。当可拆卸塞子1210与盖子1200分离时盖子1200还可以处于保持状态1245，在该状态1245下，突起部1215被插入形成在盖子1200的上表面上的凹陷1204中。图18至图22描绘了图2的盖子200处于保持状态。
图25示出了第一种撕裂线结构，撕裂线包括连接在可拆卸塞子靠近盖子一端两侧的撕裂连接点1206a，以及位于两个撕裂连接点之间且向可拆卸塞子远离盖子侧凹陷的凹面1206b，凹面的中部至盖子外围边缘的距离大于凹面的两端至盖子外围边缘 的距离；在盖子外围边缘设有外凸部，外凸部远离盖子外围边缘的一侧设有弧形凸面1206c，凹面的中部至弧形凸面中部的距离大于凹面的两端至弧形凸面两端的距离；凹面为V形凹面和U形凹面中的任意一种。
图26示出了第二种撕裂线结构，撕裂线包括三个间隔设置且连接在可拆卸塞子靠近盖子一端和盖子外围边缘之间的撕裂连接点1206a，相邻的两个撕裂连接点、盖子外围边缘和可拆卸塞子靠近盖子一端之间形成条形撕裂孔1206d，条形撕裂孔的孔径从上往下逐渐缩小。
图23示出了用于形成具有位于其外围边缘处并且与其一体成型的可拆卸塞子的盖子的过程的一个实施例。在图23中，该制备方法过程包括：S1、将浆料成型模具2330浸泡到设置在浆料罐2310内的浆料中。在一个实施例中，浆料由可分解或可生物降解的植物纤维材料组成。示例性植物纤维材料包括：木浆、甘蔗浆、芦苇浆、竹浆、棕榈浆等。S2、浆料的纤维(“浆料纤维”)2320通过真空抽吸方式被吸到浆料成型模具2330的表面上。成型模具包括盖子成型腔室和位于盖子成型腔室的敞口外围边缘的可拆卸塞子成型腔室，盖子成型腔室和可拆卸塞子成型腔室连通。
S3、当从浆料罐2310中提起(或者取出)浆料成型模具2330时，施加附加的真空抽吸以减少浆料纤维2320的含水量，从而形成未加工湿杯盖体2322。S4、然后，可以使用挤压模具2340(例如，使用真空抽吸)对浆料成型模具2330进行挤压，以使未加工湿杯盖体2322具有初始形状，从而形成成形的湿杯盖体2324。在一个实施例中，使用挤压模具2340挤压浆料成型模具2330进一步减少成形的湿杯盖体2324的含水量。在利用挤压模具2340挤压浆料成型模具2330之后，转移模具2350将成形的湿杯盖体2324转移到由上加热模具2362和下加热模具2364组成的热压制模具。
热压制模具用于使成形的湿杯盖体2324压紧和干燥，以形成半成品杯盖体2326。在被热压制模具压紧和干燥时，半成品杯盖体2326的表面具有增强的平滑度(相对于在压缩和干燥之前成形的湿杯盖体2324的表面的光滑度而言)。通过热压制模具进行的压紧和加热还可以实现改进的尺寸精度。在一个实施例中，在由热压制模具提供的干燥过程期间施加了真空抽吸，以去除由成形的湿杯盖体2324保留的水分引起的任何蒸汽，并且减少分层的可能性。S5、然后，将半成品杯盖体2326转移到由上切割模具2372和下切割模具2374组成的切割模具，以形成成品杯盖体。在一个实施例中，切割模具通过修剪半成品杯盖体2326的边缘的多余材料来形成成品杯盖体。
本发明描述了特定实施例及其详细构造和操作。本文所描述的实施例仅以说明的 方式而非限制的方式提出。根据本文的教导，本领域技术人员应当认识到，可以存在等同于本文所描述的示例性实施方案的一系列等同物。最值得注意的是，其他实施例是可能的，可以对本文所描述的实施例进行修改，并且可以存在构成所描述的实施例的组件、部件或步骤的等同物。为了清楚性和简明性，呈现了某些实施例的组件或步骤的某些方面，而没有过多细节，然而，对于本领域技术人员而言，这些细节根据本文的教导将是明显的和/或这些细节将混淆对实施例的更多相关方面的理解。
除非另有明确说明，或在所使用的上下文中存在其他理解，，否则本文所使用的条件语言，例如“可以”、“可能”、“例如”等通常旨在表达某些实施例包括某些特征、元件和/或步骤，而其他实施例不包括某些特征、元件和/或步骤。因此，这种条件性语言通常并不旨在暗示特征、要素和/或步骤无论如何都是一个或多个实施例所必需的，并且并不旨在暗示一个或多个实施例无论有或没有用户输入或提示都必然包括用于决定任何特定实施例中是否包括或将执行这些特征、要素和/或步骤的逻辑。术语“包括”、“包含”、“具有”等是同义的并且以开放式方式包含使用，并且不排除其他元件、特征、动作、操作等。此外，术语“或者”用于包含性意义(而非排他性意义)，因此当例如用于连接一系列元件时，术语“或者”表示该系列中的一个元件、一些元件或者全部。
上文所使用的术语和描述仅以说明的方式阐述，而并不意味着限制性的。本领域技术人员将认识到，在不脱离本发明的基本原理的情况下，可以对本文描述的概念进行那些变化、增强和修改和许多其他变化、增强和修改。因此，本发明的范围应仅由权利要求及其等同物来确定。

Claims (10)

  1. 一种盖子，其特征在于，包括：
    分发口，用于当所述盖子与杯子之间形成密封结构时为设置在所述杯子内的内容物提供出口；
    可拆卸塞子，在外围边缘处与所述盖子一体成型，其中所述可拆卸塞子包括突起部，且所述突起部用于与所述分发口相互作用以在所述突起部与所述分发口之间形成另一密封结构；以及
    凹陷，用于可拆卸地与所述突起部耦接将所述可拆卸塞子保持在所述盖子附近。
  2. 根据权利要求1所述的盖子，其特征在于，所述可拆卸塞子经由撕裂线与所述盖子一体成型。
  3. 根据权利要求1所述的盖子，其特征在于，所述撕裂线包括连接在可拆卸塞子靠近盖子一端两侧的撕裂连接点，以及位于两个撕裂连接点之间且向可拆卸塞子远离盖子侧凹陷的凹面，凹面的中部至盖子外围边缘的距离大于凹面的两端至盖子外围边缘的距离。
  4. 根据权利要求3所述的盖子，其特征在于，所述盖子外围边缘设有外凸部，外凸部远离盖子外围边缘的一侧设有弧形凸面，凹面的中部至弧形凸面中部的距离大于凹面的两端至弧形凸面两端的距离。
  5. 根据权利要求4所述的盖子，其特征在于，所述凹面为V形凹面和U形凹面中的任意一种。
  6. 根据权利要求1所述的盖子，其特征在于，所述撕裂线包括三个间隔设置且连接在可拆卸塞子靠近盖子一端和盖子外围边缘之间的撕裂连接点，相邻的两个撕裂连接点、盖子外围边缘和可拆卸塞子靠近盖子一端之间形成条形撕裂孔，条形撕裂孔的孔径从上往下逐渐缩小。
  7. 根据权利要求1所述的盖子，其特征在于，突起部向可拆卸塞子的一表面突起，在可拆卸塞子远离突起部的另一表面设有与所述的突起部相对应的成型凹陷槽。
  8. 根据权利要求1所述的盖子，其特征在于，盖子由植物纤维制成。
  9. 一种盖子，其特征在于，包括：
    分发口，用于提供贯穿所述盖子的开口；
    凹陷，形成在所述盖子的表面上；以及
    可拆卸塞子，在外围边缘处与所述盖子一体成型，其中所述可拆卸塞子包括突起部，且所述突起部用于摩擦配合在所述分发口和所述凹陷内。
  10. 一种盖子的制备方法，盖子包括：
    分发口，用于当所述盖子与杯子之间形成密封结构时为设置在所述杯子内的内容物提供出口；
    可拆卸塞子，在外围边缘处与所述盖子一体成型，其中所述可拆卸塞子包括突起部，且所述突起部用于与所述分发口相互作用以在所述突起部与所述分发口之间形成另一密封结构；以及
    凹陷，用于可拆卸地与所述突起部耦接将所述可拆卸塞子保持在所述盖子附近；
    其特征在于，本方法包括如下步骤：
    S1、将浆料成型模具浸泡到设置在浆料罐内的浆料中，然后浆料纤维中的纤维通过真空抽吸方式被吸到浆料成型模具的表面上，成型模具包括盖子成型腔室和位于盖子成型腔室的敞口外围边缘的可拆卸塞子成型腔室，盖子成型腔室和可拆卸塞子成型腔室连通；
    S2、当从浆料罐中提起浆料成型模具时，施加附加的真空抽吸以减少浆料纤维的含水量，从而形成未加工湿杯盖体；
    S3、使用挤压模具对浆料成型模具进行挤压，以使未加工湿杯盖体具有初始形状，从而形成成形的湿杯盖体；
    S4、转移模具将成形的湿杯盖体转移到由上加热模具和下加热模具组成的热压制模具；热压制模具用于使成形的湿杯盖体压紧和干燥，以形成半成品杯盖体；在由热压制模具提供的干燥过程期间施加了真空抽吸，以去除由成形的湿杯盖体保留的水分引起的任何蒸汽，并且减少分层的可能性；
    S5、将半成品杯盖体转移到由上切割模具和下切割模具组成的切割模具，以形成成品杯盖体。
PCT/CN2020/117808 2019-09-25 2020-09-25 一种盖子及其制备方法 WO2021057912A1 (zh)

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