WO2024001988A1 - 一种瓦楞纸杯 - Google Patents

一种瓦楞纸杯 Download PDF

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Publication number
WO2024001988A1
WO2024001988A1 PCT/CN2023/102320 CN2023102320W WO2024001988A1 WO 2024001988 A1 WO2024001988 A1 WO 2024001988A1 CN 2023102320 W CN2023102320 W CN 2023102320W WO 2024001988 A1 WO2024001988 A1 WO 2024001988A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper
corrugated
cup
fan
corrugated paper
Prior art date
Application number
PCT/CN2023/102320
Other languages
English (en)
French (fr)
Inventor
丁椒平
Original Assignee
湖北克拉弗特实业有限公司
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
Application filed by 湖北克拉弗特实业有限公司 filed Critical 湖北克拉弗特实业有限公司
Publication of WO2024001988A1 publication Critical patent/WO2024001988A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/02—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape
    • 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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/22—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines with double walls; with walls incorporating air-chambers; with walls made of laminated 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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/02—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape
    • B65D3/06—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape essentially conical or frusto-conical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/16—Cutting webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/08—Corrugated paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/02—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape
    • B65D3/04—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by shape essentially cylindrical
    • 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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/10—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines characterised by form of integral or permanently secured end closure
    • B65D3/12—Flanged discs permanently secured, e.g. by adhesives or by heat-sealing
    • B65D3/14—Discs fitting within container end and secured by bending, rolling, or folding operations
    • 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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/28—Other details of walls
    • 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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/28—Other details of walls
    • B65D3/30—Local reinforcements, e.g. metallic rims
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • B65D81/3865—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation drinking cups or like containers
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • B65D81/3865—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation drinking cups or like containers
    • B65D81/3869—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation drinking cups or like containers formed with double walls, i.e. hollow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/001—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs made from laminated webs, e.g. including laminating the webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2110/00—Shape of rigid or semi-rigid containers
    • B31B2110/10—Shape of rigid or semi-rigid containers having a cross section of varying size or shape, e.g. conical or pyramidal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2110/00—Shape of rigid or semi-rigid containers
    • B31B2110/20—Shape of rigid or semi-rigid containers having a curved cross section, e.g. circular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/50—Construction of rigid or semi-rigid containers covered or externally reinforced
    • B31B2120/501—Construction of rigid or semi-rigid containers covered or externally reinforced by applying wrapping material only on the side wall part of a box
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/70—Construction of rigid or semi-rigid containers having corrugated or pleated walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B32B2307/737—Dimensions, e.g. volume or area
    • B32B2307/7375—Linear, e.g. length, distance or width
    • B32B2307/7376—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/02—Open containers

Definitions

  • the invention belongs to the technical field of paper cups, and relates to a paper cup, and in particular to a double-layer corrugated paper cup suitable for unmanned fully automated manufacturing.
  • Existing corrugated paper cups mainly have two structures: the first one is to put a corrugated paper sleeve on the outside of the inner paper cup. Because the single layer of corrugated corrugated sheets will stretch and cannot maintain the corrugated gap, it has an anti-scalding effect in order to maintain the corrugated paper sleeve's corrugated gaps. , this kind of corrugated paper sleeve is made by first bonding a corrugated single-layer corrugated corrugated board to an inextensible base paper, and then making a corrugated paper sleeve.
  • Corrugated cups with this structure can realize the entire process of unmanned automated manufacturing. After the inner paper cups and corrugated paper sleeves are automatically manufactured, they are then connected together through a splicing machine.
  • This type of corrugated paper cup has a thicker structure due to the presence of corrugated base paper, which wastes paper. Moreover, it is a separate manufacturing process that requires a lot of process equipment and a long process.
  • the second is to build a single layer of corrugated paper between the inner layer of paper and the outer layer of paper.
  • the single layer of corrugated paper is supported by the single layer of corrugated paper to form a thermal insulation gap and sufficient paper strength between the inner layer of paper and the outer layer of paper.
  • the corrugated gaps in the space are difficult to seal without leaking during edge sealing. Therefore, the corrugated corrugated paper will be excluded from the edge sealing structure during edge sealing.
  • the corrugated paper When making cup mouth curling, the corrugated paper is also difficult to roll. Winding, so the corrugated corrugated paper will be excluded from the roll opening. For this reason, it is very difficult to achieve unmanned automated manufacturing of corrugated cups with this structure, because the corrugated corrugations are difficult to handle during edge sealing and crimping.
  • a simplified corrugated paper cup is provided for unmanned automated manufacturing.
  • a corrugated paper cup including a cup body formed by rolling a fan-shaped sheet, and the fan-shaped sheet includes an inner cup paper and a single sheet bonded to the outer peripheral surface of the inner cup paper.
  • a layer of corrugated paper characterized in that the first end of the corrugated paper is misaligned and parallel to the first end of the inner cup paper, thereby forming the first hypotenuse of the fan-shaped sheet, and the second end of the corrugated paper and the second end of the inner cup paper are The ends are flush to form the second hypotenuse of the fan-shaped sheet.
  • the corrugated strip direction after the fan-shaped sheet is unfolded is a transverse stripe from the first hypotenuse to the second hypotenuse.
  • the fan-shaped sheet is rolled to form When sealing and sealing, the second hypotenuse and the first hypotenuse of the fan-shaped sheet are stacked to form an edge-sealing area where at least three layers of paper are bonded and bonded.
  • the sector-shaped sheet is close to the corrugated cavity area of the upper arc edge. After flattening, the thickness is smaller than the thickness of the middle part of the fan-shaped sheet, and part of the extruded corrugated cavity area is curled outward together with the inner cup paper to form a crimp.
  • the corrugated paper in the upper and lower arc edges of the fan-shaped sheet is flush with the inner cup paper, and the corrugated cavity area of the fan-shaped sheet close to the lower arc edge is flattened to form a thickness smaller than the fan shape.
  • the thickness of the middle part of the sheet, and part of the extruded corrugated cavity area is folded inward together with the inner cup paper to form the cup base.
  • a single layer of corrugated corrugated paper is directly bonded to the inner cup paper, making the structure of the cup body simple, and through the structural design of separating the inner cup paper and corrugated paper on the first bevel edge, the inner cup paper is waterproof
  • the plastic material allows the body to be completely sealed by the adhesive part of the inner cup paper to prevent water leakage.
  • the direction of the corrugated strips is transverse stripes along the first hypotenuse to the second hypotenuse. On the one hand, it has an anti-scalding effect.
  • the stripes are set horizontally, the appearance after winding It is a spiral upward stripe, forming a ring-like support structure, which enhances the structural strength.
  • the mouth and bottom of the cup are wrapped with corrugated corrugations that have been flattened, and the strength of the mouth and bottom of the cup is strengthened.
  • the second bevel edge and the first bevel edge of the fan-shaped sheet are laminated to form at least three layers of paper that are adhered to each other.
  • the edge-sealing area is connected, and the edge-sealing area is extruded to form a structure equivalent to a support beam.
  • the overall strength of the paper cup is higher than that of ordinary double-layer paper cups.
  • the paper used to make corrugated sheets is pulled forward by the rollers during manufacturing. Due to the influence of fine fiber arrangement and traction stretching, the paper has been stretched in the length direction of the paper pulling forward, and the stretchability is very small. , press out transverse corrugated stripes on the paper that are perpendicular to the paper traction direction. That is, the direction of the corrugated strips after the fan-shaped sheet is unfolded is the transverse stripe along the first hypotenuse to the second hypotenuse, and the first side of the corrugated paper The end of the inner cup paper is dislocated parallel to the first end of the inner cup paper.
  • the horizontal stripes formed by this structure and the horizontal stripes are flattened and rolled into the roll lip, not only can the strength of the roll lip be enhanced, but the roll lip will not be broken. crack, because a certain degree of paper stretch is required when rolling, and horizontally striped and squeezed corrugated corrugated sheets meet the stretchability requirements. Transversely striped corrugated sheets have not been stretched in the transverse direction and have a certain degree of stretchability, achieving simplification
  • the structure is suitable for the structural requirements of unmanned manufacturing and also improves the structural strength.
  • the flattened corrugated sheets form wrinkles and are wound into the roll opening or the cup bottom.
  • the thickness of the inner cup paper is greater than the thickness of the corrugated paper.
  • This corrugated paper cup adopts a double-layer structure with a thick inside and a thin outside, which ensures the stiffness of the paper cup and enhances the connection strength of the paper cup.
  • the corrugated paper corrugated paper is a straight-striped corrugated board, and the direction of the straight stripes is perpendicular to the first hypotenuse.
  • the corrugated paper corrugated paper has transverse wavy stripes along the first bevel edge to the second bevel edge.
  • the corrugated paper corrugated paper is a discontinuous corrugated cavity distributed laterally along the first bevel to the second bevel, including dot-shaped corrugated cavities or rectangular corrugated cavities. .
  • the first bevel edge of the fan-shaped sheet has an inner cup paper area that is not covered by corrugated paper.
  • This area is an adhesive part, and the second end of the inner cup paper is bonded to the second end of the corrugated paper.
  • the edge sealing area includes a four-layer reinforced structure formed by the second end of the corrugated paper, the second end of the inner cup paper, the first end of the corrugated paper and the first end of the inner cup paper, and the The second end of the corrugated paper, the second end of the inner cup paper and the adhesive part form a three-layer water-sealed structure.
  • the adhesive part and the inner cup paper are rolled at the roll lip, and the bonding part of the roll lip is more closed and stable.
  • the roll lip is increased after the roll lip is rolled.
  • the edge-sealing connection strength of the area makes the connection between the two ends of the paper cup more closed and stable, making it less likely to separate.
  • the edge sealing area includes the The second end of the corrugated paper, the second end of the inner cup paper and the adhesive part form a three-layer water-sealed structure.
  • a waterproof layer is provided on the inner wall of the inner cup paper.
  • the adhesive portion overlaps the inner surface of the second end of the inner cup paper and forms a sealed adhesive connection
  • the waterproof layer One end is connected to the waterproof layer body.
  • One end of the waterproof layer is connected to the body of the waterproof layer to prevent water from leaking between the adhesive part and the second end of the inner cup paper.
  • the end surface of the first end of the corrugated paper is against the waterproof layer, further increasing the The sealing of the overlapping area is ensured.
  • a glue layer is formed between the corrugated paper and the inner cup paper.
  • one end of the glue layer abuts against the waterproof layer, thereby improving the sealing and connection strength of the overlapping area.
  • the paper cup also includes a cup bottom.
  • the cup bottom is provided with an adhesive layer.
  • the lower arc edge of the fan-shaped sheet is extruded to form a bending area.
  • the end is bent inward to form a folded layer, and the adhesive layer is sealingly bonded between the bent area and the folded layer.
  • the folded layer makes the bonding part and the second end of the inner cup paper also have connection strength.
  • This double-layer paper cup adopts a double-layer structure with a thick inside and a thin outside.
  • the edge sealing structure uses the inner cup paper and corrugated paper to separate the edges. It completely relies on the sealing edge of the inner cup paper.
  • This edge sealing structure uses at least three layers. It is carried out in a bonding manner, and the thicker edge sealing is changed by extrusion, so that the thickness of the crimping area where the edge sealing area is located is reduced, which is suitable for mechanical automatic crimping. Due to the at least three-layer edge sealing structure, the paper cup can provide sufficient support and maintain the strength of the paper cup, and the cup wall formed in the rolled edge area will not deform or bend.
  • edge-sealing structure of at least three layers is stacked cross-wise, it can form a good bonding effect after edge-sealing.
  • the edge-sealing area is not easy to tear or detach, and the anti-corrosion resistance is further enhanced through extrusion and crimping. The effect of tearing or detachment.
  • Figure 1 is a three-dimensional schematic diagram of Embodiment 1 of the present invention.
  • Figure 2 is a schematic cross-sectional view of a half section of Figure 1;
  • Figure 3 is an enlarged schematic diagram of part B in Figure 2;
  • Figure 4 is an enlarged schematic diagram of part A in Figure 2;
  • Figure 5 is a schematic structural diagram of the double-layer paper cup in Figure 1 after it is fully unfolded;
  • Figure 6 is a schematic diagram of the layer composite structure of the double-layer paper cup before the edges are sealed
  • Figure 7 is a schematic cross-sectional structural diagram of part C-C in Figure 2;
  • Figure 8 is a schematic diagram of the cross-sectional structure of part D-D in Figure 2, which is a schematic diagram of the specific structure of the cup mouth curling area of the double-layer paper cup after being compressed by the same cross-sectional thickness from C-C;
  • Figure 9 is an enlarged structural schematic diagram of the joint portion of the double-layer paper cup.
  • Figure 10 is an enlarged structural schematic diagram of the joint portion of the double-layer paper cup in the second embodiment.
  • Figure 11 is the placement position of the fan-shaped sheet after cutting, and after adjustment, the diagram of Figure 5 is formed.
  • the paper cup 1 is a hollow and expanded cup body structure, including a cup body rolled by a fan-shaped sheet 11.
  • the fan-shaped sheet 11 includes a first bevel edge 111, a second bevel edge 112,
  • the upper arc edge 113 and the lower arc edge 114, the first bevel edge 111 and the second bevel edge 112 are bonded to form the edge sealing area 4.
  • the paper cup 1 also includes a curling edge 51 and a cup bottom 6.
  • the outer surface of the cup body is corrugated.
  • the corrugated structure plays the role of anti-slip and anti-scalding.
  • the corrugated structure is joined at 4 edge sealing areas of the paper cup 1, which increases the structural strength of the paper cup 1.
  • the cup body is composed of waterproof layer 8, inner cup paper 2, glue layer 9 and corrugated paper 3 from the inside to the outside.
  • the thickness of the inner cup paper 2 is greater than the thickness of the corrugated paper 3, so the inner cup paper 2 is the main load-bearing structure.
  • the inner cup paper 2 can ensure the stiffness of the paper cup 1 and enhance the connection strength of the paper cup 1.
  • the corrugated paper 3 has horizontal stripes. Corrugated structure, corrugated paper 3.
  • the recessed part of the corrugated structure is bonded to the inner cup paper 2 through a glue layer 9.
  • Above the paper cup 1 is the curling area 5, and below the paper cup 1 is the bending area 7.
  • the thickness of the roll mouth area 5 is smaller than the thickness of the cup body.
  • the upper part of the roll mouth area 5 is rolled to form a roll mouth 51.
  • the roll mouth 51 is convenient to enhance the strength of the cup mouth and is also convenient for drinking water.
  • the cup bottom 6 is provided with an adhesive layer 62, the bending area 7 is obtained by extruding the cup body, and a folding layer 71 is formed after bending at the end of the bending area 7.
  • the adhesive layer 62 is placed between the bending area 7 and the folding layer 71 and fixed by adhesive, so that the cup bottom 6 is fixed on the body of the paper cup 1 .
  • the adhesive layer 61 is located between the bending area 7 and the folding layer 71 so that the cup bottom 6 is supported, the connection between the cup bottom 6 and the paper cup 1 body is more stable, and the sealing performance between the cup bottom 6 and the paper cup 1 body is better. , less prone to water leakage.
  • the crimp area 5 is obtained by extruding the cup body.
  • the end of the crimp area 5 is rolled to form the crimp 51, and the remaining part is the cup wall 52 of the extruded cup body.
  • Part of the cup wall 52 also has sufficient strength because it is composed of multiple layers.
  • Figure 5 shows a fan-shaped sheet 11.
  • the cup body is unfolded to form a fan-shaped sheet, which is cut from the sheet shown in Figure 11.
  • the details are as follows: on paper 3 Press straight stripe corrugation, the direction of the straight stripe is perpendicular to the paper traction direction, then the edge of the single-layer corrugated paper 3 and the edge of the inner cup paper 2 are placed in parallel and offset, the two are bonded and compounded together through two compound rollers, and then cut The first end 21 of the inner cup paper is cut to form the first bevel edge 111 of the fan-shaped sheet 11.
  • the corrugated paper 3 has a single-layer corrugated structure without bottom paper.
  • the corrugated paper has straight stripe corrugations, and the direction of the straight stripes is perpendicular to the first hypotenuse 111.
  • the horizontal stripes of the corrugated paper are It has not been stretched in the transverse direction and has a certain degree of stretchability, achieving the structural requirements of a simplified structure suitable for unmanned manufacturing.
  • the corrugated paper is corrugated with transverse wavy stripes along the first bevel to the second bevel, which is also required for compound stretchability, or replaced with transversely distributed discontinuous corrugated cavities, including dot-shaped Corrugated cavity or rectangular corrugated cavity.
  • the single-layer corrugated paper 3 is bonded to the fan-shaped outer peripheral surface of the inner cup paper 2.
  • the fan-shaped length of the inner cup paper 2 is greater than the fan-shaped length of the corrugated paper 3, and the first end 31 of the corrugated paper is misaligned with the first end 21 of the inner cup paper.
  • first bevel edge 111 of the fan-shaped sheet 11 has an inner cup paper area not covered by corrugated paper, which area is the adhesive part 211, the second bevel edge 112, the upper arc edge 113 and the lower arc edge of the fan-shaped sheet 11
  • the corrugated paper 3 in the edge 114 is flush with the inner cup paper 2, and then the upper arc edge 113 is extruded to form the curling area 5, and the lower arc edge 114 is extruded to form the bending area 7.
  • FIG. 5 shows the state in Figure 5 as shown in Figure 6 and Figure 9.
  • Figure 6 shows the multi-layer structure of the cup, which is the waterproof layer 8, the inner cup paper 2 and the corrugated paper 3.
  • the waterproof layer 8 is located in the paper cup 1. On the inside of the paper cup 1, the waterproof layer 8 is sticky and adheres to the inner cup paper 2.
  • the waterproof layer 8 and the inner cup paper 2 have the same shape and size, so that after the paper cup 1 is folded and formed, the inner wall of the paper cup 1 is covered with the waterproof layer 8, ensuring that the paper cup 1 sealing.
  • the edge sealing area 4 shown in Figure 9 will be formed, specifically: the first end 31 of the corrugated paper and the second end of the corrugated paper. 32 overlap, and the overlapping position is staggered with the bonding part 211.
  • the edge sealing area 4 is: the second end 32 of the corrugated paper, the second end 22 of the inner cup paper, the first end 21 of the corrugated paper and the inner cup.
  • the first end 21 of the cup paper forms a four-layer reinforced structure and a three-layer water-sealed structure formed by the second end 32 of the corrugated paper, the second end 22 of the inner cup paper and the adhesive part 211.
  • the edge sealing area 4 is extruded after being bonded. Pressure to form a multi-layer reinforced layer, which plays the role of supporting beams.
  • the fan-shaped sheet 11 in Figure 6 is rolled and bonded to form a cup body.
  • the cross-sectional shape of the cup body is as shown in Figure 7.
  • the corrugated structure The concave part of the corrugated paper 3 is attached and fixed to the inner cup paper 2 through the glue layer 9, and the outer protruding part of the corrugated paper 3 of the corrugated structure forms a heat-insulating cavity.
  • the structure in Figure 6 is extruded, forming the extruded structure in Figure 8.
  • the crimp 51 is formed by winding the portion of the crimp area 5 reinforced by the wrinkles. Roll the pleats together in the crimp 51, which has good structural strength.
  • the principle of this solution is as follows.
  • the paper cup 1 is first overlapped with the inner side of the inner cup paper 2 through the adhesive part 211, and then the second end 22 of the inner cup paper is overlapped with the first end 31 of the corrugated paper, so that the paper cup 1.
  • the end surface of the first end 31 of the corrugated paper is against the waterproof layer 8, and one end of the glue layer 9 is against the waterproof layer 8, which improves the sealing and connection strength of the overlapping area 4.
  • the paper cup 1 When the paper cup 1 is forming the curling edge 51 and the cup base 61, there are many layers at the overlap and it is difficult to roll the edge. Therefore, the paper cup 1 is extruded to form the curling area 5 and the bending area 7, which are formed by the corrugated paper 3. Pleats to compensate for the loss of strength caused by extrusion.
  • Embodiment 2 is basically the same as Embodiment 1. The difference lies in that the edge sealing area 4 has a docking structure. As shown in Figure 10, the first end 31 of the corrugated paper and the second end 32 of the corrugated paper are docked, and the docking position is at the bonding position. 211 side, or there is a gap between the first end 31 of the corrugated paper and the second end 32 of the corrugated paper, the edge sealing area 4 is: the second end 32 of the corrugated paper, the second end 22 of the inner cup paper and the bonding part 211 The three layers formed and the two layers formed by the first end 31 of the corrugated paper and the first end 21 of the inner cup paper. Compared with the edge sealing area 4 of Embodiment 1, although the number of layers is reduced, it still has sufficient strength to maintain the strength of the curling area 5 because the inner cup paper 2 is a thicker paper and has sufficient strength.
  • Embodiment 3 is basically the same as Embodiment 1 or 2. The difference is that the corrugated paper 3 has a planar structure, and the corrugated paper is tinfoil, plastic paper, silicone paper, cellophane or asphalt paper that can be designed in various shapes. . Because the inner cup paper 2 is a thicker paper, it still has sufficient strength after being rolled together with the outer paper through this edge-sealing structure.

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Abstract

一种瓦楞纸杯，包括由扇形片材（11）卷绕形成的杯体，扇形片材（11）包括内杯纸张（2）和粘接在内杯纸张（2）外周面上的单层瓦楞纸张（3），瓦楞纸张第一端（31）与内杯纸张第一端（21）错位且平行，从而形成扇形片材（11）的第一斜边（111），瓦楞纸张第二端（32）与内杯纸张第二端（22）齐平，形成扇形片材（11）的第二斜边（112），扇形片材（11）展开后的瓦楞条形方向为从第一斜边（111）到第二斜边（112）方向的横向条纹，扇形片材（11）卷绕形成密封封边时，扇形片材（11）的第二斜边（112）和第一斜边（111）层叠形成至少三层纸张相贴合粘接的封边区域（4），扇形片材（11）靠近上弧边的瓦楞空腔区域压平后形成厚度小于扇形片材（11）中间部分的厚度，且被挤压的瓦楞空腔区域的一部分随内杯纸张（2）一起向外卷边形成卷口（51）。该纸杯将瓦楞条形方向为沿着第一斜边到第二斜边的横向条纹，一方面具有防烫的效果，另一方面还由于是横向设置的条纹，卷绕后外形为螺旋向上的条纹，形成类似环形的支撑结构，结构强度增强。

Description

一种瓦楞纸杯 技术领域
本发明属于纸杯技术领域，涉及一种纸杯，特别涉及一种能够适用于无人全自动化制造的双层瓦楞纸杯。
 背景技术
随着人们环境保护意识的增强，纸杯作为一种替代塑料杯的日常用品，越来越受到欢迎，在家庭、餐馆和办公室已经成为日用必需品。如隔热防烫的瓦楞纸杯就是一种比较受欢迎的纸杯产品，而提供一种能够适用无人自动化生产线的瓦楞纸杯结构是需要解决的技术问题。
现有的瓦楞纸杯主要有两种结构：第一种是在内纸杯外侧套上瓦楞纸套，因单层的瓦楞会伸展而不能保持瓦楞间隙，为保持瓦楞纸套的瓦楞空隙而起到防烫效果，这种瓦楞纸套是先将波浪状的单层瓦楞粘接在一层不能伸展的底纸上，然后做成瓦楞纸套，瓦楞纸套套接在纸杯外侧后，瓦楞纸套的底纸和纸杯粘接固定。这种结构的瓦楞纸杯能够实现全程的无人自动化制造，分别自动化制造内纸杯和瓦楞纸套后，再通过套接机套接在一起。 这种瓦楞纸杯因为存在瓦楞底纸，结构厚度较厚，比较浪费纸张，而且是分体制造工艺，工艺设备多，工艺过程长。
第二种是将单层的瓦楞纸张内置在内层纸和外层纸之间，由单层的瓦楞提供支撑，使内层纸和外层纸之间形成隔热间隙以及有足够的纸张强度，然后将内层纸、瓦楞纸和外层纸做成扇形的片材，将该扇形片材的两边密封粘接形成封边，并对杯口进行卷口，由于瓦楞纸会伸缩且有占据较大空间的瓦楞间隙，在进行封边时很难达到密封而不漏水的状态，因此封边时会将波浪状的瓦楞纸排除在封边结构外，在做杯口卷口时，瓦楞纸也很难卷绕，因此会将波浪状的瓦楞纸排除在卷口外。为此，这种结构的瓦楞纸杯实现无人自动化制造的难度非常大，因为波浪状的瓦楞在封边和卷口时都难以处理。
 技术问题
提供一种简化的瓦楞纸杯以适用无人自动化制造。
 技术解决方案
本发明的目的可通过下列技术方案来实现：一种瓦楞纸杯，包括由扇形片材卷绕形成的杯体，所述扇形片材包括内杯纸张和粘接在内杯纸张外周面上的单层瓦楞纸张，其特征在于，所述瓦楞纸张第一端与内杯纸张第一端错位且平行，从而形成扇形片材的第一斜边，所述瓦楞纸张第二端与内杯纸张第二端齐平，形成扇形片材的第二斜边，所述扇形片材展开后的瓦楞条形方向为从第一斜边到第二斜边方向的横向条纹，所述扇形片材卷绕形成密封封边时，所述扇形片材的第二斜边和第一斜边层叠形成至少三层纸张相贴合粘接的封边区域，所述扇形片材靠近上弧边的瓦楞空腔区域压平后形成厚度小于扇形片材中间部分的厚度，且被挤压的瓦楞空腔区域的一部分随内杯纸张一起向外卷边形成卷口。
作为改进的，所述扇形片材的上弧边和下弧边中的瓦楞纸张和内杯纸张相平齐，所述扇形片材靠近下弧边的瓦楞空腔区域压平后形成厚度小于扇形片材中间部分的厚度，且被挤压的瓦楞空腔区域的一部分随内杯纸张一起向内折边形成杯底脚。
本方案中，单层瓦楞直接粘接在内杯纸张上，使得杯体的结构变得简单，并且通过第一斜边的内杯纸张和瓦楞纸张分离的结构设计，且内杯纸张采用了防水性材料，使得本体能够完全依靠内杯纸张的粘接部进行密封，防止漏水。在基础上，本方案将瓦楞条形方向为沿着第一斜边到第二斜边的横向条纹，一方面具有防烫的效果，另一方面还由于是横向设置的条纹，卷绕后外形为螺旋向上的条纹，形成类似环形的支撑结构，结构强度增强。并且杯口和杯底都卷入了以被压平过的瓦楞，卷口和杯底强度得到强化，扇形片材的第二斜边和第一斜边层叠形成至少三层纸张相贴合粘接的封边区域，且该封边区域被挤压形成了相当于支撑梁的结构，该纸杯的整体强度高于通常的双层纸杯。
其次，用于制造瓦楞的纸张在制造时随着辊轴的向前牵引，其纸张因细纤维排列和牵引拉伸的影响，在纸张牵引前进的长度方向上已经被拉伸，伸展性很小，在纸张上压制出与纸张牵引前进方向垂直的横向条纹瓦楞，既扇形片材展开后的瓦楞条形方向为沿着第一斜边到第二斜边的横向条纹，且瓦楞纸张的第一端与内杯纸张第一端平行错位，通过这种结构形成的横向条纹并将这种横向条纹压平并卷入卷口后，不仅能增强卷口的强度，也不会造成卷口的碎裂，因为卷口时需要一定的纸张伸展性，而横向条纹且被挤压的瓦楞符合了伸展性要求，横向条纹的瓦楞在横向上没有被拉伸过，也一定的伸张性，实现了简化结构适用于无人化制造的结构要求，也提高了结构强度。
在上述的瓦楞纸杯中，所述扇形片材靠近上弧边区域和靠近下弧边区域压平后，压扁的瓦楞形成褶皱并卷绕进卷口或者杯底脚。
在上述的瓦楞纸杯中，所述内杯纸张厚度大于瓦楞纸张的厚度。本瓦楞纸杯采用内厚外薄的双层结构，保证了纸杯挺度和增强了纸杯的连接强度。
在上述的瓦楞纸杯中，所述瓦楞纸张的瓦楞为直条纹瓦楞，且直条纹方向且与第一斜边相垂直。
在上述的瓦楞纸杯中，所述瓦楞纸张的瓦楞为沿着第一斜边到第二斜边的横向波浪状条纹。
在上述的瓦楞纸杯中，所述瓦楞纸张的瓦楞为沿着第一斜边到第二斜边的横向分布的不连续瓦楞空腔，包括圆点状的瓦楞空腔或者矩形状的瓦楞空腔。
在上述的瓦楞纸杯中，所述扇形片材的第一斜边具有未被瓦楞纸张覆盖的内杯纸张区域，该区域为粘接部，所述内杯纸张第二端粘接在瓦楞纸张第一端外侧面时，所述的封边区域包括由所述瓦楞纸张第二端、内杯纸张第二端、瓦楞纸张第一端和内杯纸张第一端形成四层强化结构以及由所述瓦楞纸张第二端、内杯纸张第二端和粘接部形成的三层水密封结构。通过这种搭接方式，使得卷口卷绕成型时，粘接部和内杯纸张在卷口处形成卷绕，卷口的粘结处更加封闭稳定，同时卷口卷绕后增加了卷口区的封边连接强度，使得纸杯的两端连接更加封闭稳定，不容易发生分离的情况。
作为替换的方案，所述内杯纸张第二端仅粘接在粘接部时，瓦楞纸张第一端和瓦楞纸张第二端相对齐或者留有间隙，所述的封边区域包括由所述瓦楞纸张第二端、内杯纸张第二端和粘接部形成的三层水密封结构。虽然强化效果降低，但是由于也是将瓦楞挤压后一起卷入卷口中，强度依旧能得到强化。
在上述的瓦楞纸杯中，所述的内杯纸张内壁上设置有防水层，所述的粘接部搭接在内杯纸张第二端的内侧面并形成密封粘接连接时，所述防水层的一端与防水层本体相连接。防水层的一端与防水层的本体相连接，防止水从粘接部和内杯纸张第二端之间泄露，在搭接区域，瓦楞纸张第一端的端面抵靠在防水层上，进一步增加了搭接区域的密封性。
在上述的瓦楞纸杯中，所述的瓦楞纸张和内杯纸张之间形成胶水层。在搭接区域中胶水层的一端抵靠在防水层上，提高了搭接区域的密封性和连接强度。
在上述的瓦楞纸杯中，所述的纸杯还包括杯底，所述的杯底上设有粘结层，所述的扇形片材的下弧边挤压后形成弯折区，弯折区的端部向内弯折形成折叠层，所述的粘结层密封粘接在弯折区和折叠层之间。折叠层使得粘接部和内杯纸张第二端也具有连接强度。
 有益效果
1、本双层纸杯采用内厚外薄的双层结构，而封边结构采用内杯纸张和瓦楞纸张分离封边，完全依靠内杯纸张的密封封边，这种封边结构采用至少三层相贴合的方式进行，并且通过挤压方式对较厚的封边进行改变，使得封边区域所在的卷口区的厚度减小，适合机械自动化卷口。由于至少三层的封边结构使得纸杯能够足够的支撑力，保持了纸杯的强度，卷口区形成的杯壁也不会变形弯折。
2、至少三层的封边结构由于是交叉式堆叠的，封边后能够形成较好的粘接效果，封边区域不容易撕裂或脱离，且通过挤压和卷口后进一步增强了防撕裂或脱离的效果。
3、采用瓦楞结构的瓦楞纸张时，由于对瓦楞的挤压，使得瓦楞的空心部分形成了褶皱，而这些褶皱因为折痕以及多层的重叠使得卷口区得到强化，在卷口后能够形成较好的强度。
 附图说明
图1 是本发明实施一的立体示意图；
图2 是图1的半剖的截面示意图；
图3 是图2中B部分的放大示意图；
图4是图2中A部分的放大示意图；
图5是图1双层纸杯完全展开后的结构示意图；
图6 是双层纸杯的杯体未封边前的层数复合结构示意图；
图7是图2中C-C部分的横截面结构示意图；
图8 是图2中D-D部分的横截面结构示意图，既双层纸杯的杯口卷口区由C-C相同横截面厚度压缩后的具体结构示意图；
图9是双层纸杯的接缝部分的放大结构示意图；
图10是实施例二中双层纸杯的接缝部分的放大结构示意图。
图11是扇形片材裁切后的摆放位置，调整后形成图5的图示。
图中，1、纸杯；11、扇形片材；111、第一斜边；113上弧边；114、下弧边；112、第二斜边；2、内杯纸张第一端；211、粘接部；22、内杯纸张第二端；3、瓦楞纸张；31、瓦楞纸张第一端；32、瓦楞纸张第二端；4、封边区域；5、卷口区；51、卷口；52、杯壁；6、杯底；61、杯底脚；62、粘结层；7、弯折区；71、折叠层；8、防水层；9、胶水层。
 本发明的实施方式
以下是本发明的具体实施例，并结合附图对本发明的技术方案作进一步的描述，但本发明并不限于这些实施例。
实施例一
如图1和图5所示，纸杯1为中空扩口状的杯体结构，包括由扇形片材11卷绕的杯体，扇形片材11包括第一斜边111、第二斜边112、上弧边113和下弧边114，第一斜边111和第二斜边112相粘接形成封边区域4，纸杯1还包括卷口51和杯底6，杯体的外表面上为瓦楞，瓦楞结构起到了防滑、防烫的作用，瓦楞结构在纸杯1的封边区域4处接合，增加了纸杯1的结构强度性。
如图2所示，杯体从内到外依次为防水层8、内杯纸张2、胶水层9和瓦楞纸张3。内杯纸张2的厚度大于瓦楞纸张3的厚度，因此内杯纸张2是主要的承重结构，通过内杯纸张2能够保证纸杯1挺度和增强纸杯1的连接强度，瓦楞纸张3为横向条纹的瓦楞结构，瓦楞纸张3瓦楞结构的凹入部分通过胶水层9与内杯纸张2粘接。在纸杯1的上方为卷口区5，纸杯1的下方为弯折区7。卷口区5的厚度均小于杯体的厚度，卷口区5的上部分卷绕形成卷口51,卷口51便于增强杯口的强度，也便于喝水。
具体来说，如图3所示，杯底6上设有粘结层62，弯折区7由杯体经过挤压得到的，在弯折区7的端部弯折后形成折叠层71，将粘结层62放置在弯折区7和折叠层71之间并粘接固定，使得杯底6固定在纸杯1的本体上。其中，粘结层61位于弯折区7和折叠层71之间使得杯底6受到支撑效果，杯底6和纸杯1本体的连接更加稳定，并且杯底6和纸杯1本体的密封性更加好，不容易发生漏水。
如图4所示，卷口区5是由杯体经过挤压得到的，卷口区5的端部经过卷绕后形成卷口51，其余部分为挤压后杯体的杯壁52，该部分杯壁52由于是多层复合在一起，也是具有足够的强度的。
如图5所示为扇形片材11，成型纸杯撕开后，取杯体部分展开后既为扇形片材，由图11所示的片材中裁切得到，其具体如下：在纸张3上压制直条纹瓦楞，直条纹方向与纸张牵引方向垂直，其后将单层瓦楞纸张3的边缘与内杯纸张2边缘错位平行放置，通过两个复合辊将两者粘接复合在一起，然后裁切内杯纸张第一端21形成扇形片材11的第一斜边111，第二斜边112、上弧边113和下弧边114一起随第一斜边111一起裁切，形成图11实线部分所示的扇形片材11。通过这种方式就可以实线无人化自动制造。因此，图5和图6所示，瓦楞纸张3为单层无底纸的瓦楞结构，瓦楞纸张的瓦楞为直条纹瓦楞，且直条纹方向且与第一斜边111相垂直，横向条纹的瓦楞在横向上没有被拉伸过，也一定的伸张性，实现了简化结构适用于无人化制造的结构要求。作为可替换的方案，瓦楞纸张的瓦楞为沿着第一斜边到第二斜边的横向波浪状条纹也是复合伸展性要求的，或者替换为横向分布的不连续瓦楞空腔，包括圆点状的瓦楞空腔或者矩形状的瓦楞空腔。
单层的瓦楞纸张3粘接在内杯纸张2的扇形外周面上，内杯纸张2的扇形长度大于瓦楞纸张3的扇形长度，且瓦楞纸张第一端31与内杯纸张第一端21错位且平行，使扇形片材11的第一斜边111具有未被瓦楞纸张覆盖的内杯纸张区域，该区域为粘接部211，扇形片材第二斜边112、上弧边113和下弧边114中的瓦楞纸张3和内杯纸张2相平齐，之后在上弧边113部分进行挤压后形成卷口区5，在下弧边114部分进行挤压后形成的弯折区7。
图5的状态是通过如图6所示和图9得到的，图6展示了杯体的多层结构，分别为防水层8、内杯纸张2和瓦楞纸张3，其中防水层8位于纸杯1的内侧，防水层8具有粘性且与内杯纸张2粘接固定，防水层8和内杯纸张2的形状大小相同，使得纸杯1在折叠成型后纸杯1内壁均覆盖由防水层8，保证纸杯1的密封性。如图9所示，通过图6的状态，将扇形片材11卷绕对接后，就会形成图9所示的封边区域4，具体为：瓦楞纸张第一端31和瓦楞纸张第二端32搭接，且搭接位置与粘接部211相错开，所述的封边区域4为：所述瓦楞纸张第二端32、内杯纸张第二端22、瓦楞纸张第一端21和内杯纸张第一端21形成四层强化结构以及所述瓦楞纸张第二端32、内杯纸张第二端22和粘接部211形成的三层水密封结构，封边区域4粘接后进行挤压，形成多层的强化层，起到支撑梁的效果。
图6的扇形片材11卷绕粘接后形成了杯体，杯体的横截面形状如如图7所示，在内杯纸张2和瓦楞纸张3之间还设置有胶水层9，瓦楞结构的瓦楞纸张3的凹入部分通过胶水层9与内杯纸张2贴合固定，瓦楞结构的瓦楞纸张3外凸出部分形成隔热空腔。在卷绕区5，图6的结构被挤压，形成了图8的挤压后结构，卷口区5在受到挤压时，瓦楞纸张3凸出部分形成褶皱，褶皱增强了卷口区5强度，防止卷口51在使用时发生变形。此时，在被褶皱增强的卷口区5的部分卷绕形成了卷口51。将褶皱一起卷在卷口51中，卷口51的结构强度好。
本方案的原理如下，纸杯1成型时，先通过粘接部211和内杯纸张2的内侧面搭接，再将内杯纸张第二端22搭接在瓦楞纸张第一端31上，使得纸杯1在连接处均匀过渡，避免瓦楞纸张第一端31与内杯纸张2本体直接连接。在搭接区域4中，瓦楞纸张第一端31的端面抵靠在防水层8上，胶水层9的一端抵靠在防水层8上，提高了搭接区域4的密封性和连接强度。纸杯1在形成卷口51和杯底脚61时，搭接处具有较多的层数不易进行卷口，因此对纸杯1挤压形成卷口区5和弯折区7，由瓦楞纸张3的褶皱来弥补因挤压而导致强度减弱的情况。
实施例二
实施例二与实施例一基本相同，不同点在于，封边区域4为对接结构，具体如图10所示，瓦楞纸张第一端31和瓦楞纸张第二端32对接，且对接位置位于粘接部211一侧，或者瓦楞纸张第一端31和瓦楞纸张第二端32之间留有间隙，封边区域4为：瓦楞纸张第二端32、内杯纸张第二端22和粘接部211形成的三层以及瓦楞纸张第一端31和内杯纸张第一端21形成的两层。相比于实施例一的封边区域4，虽然层数减少了，但是依旧能够有足够的强度保持卷口区5的强度，因为内杯纸张2是较厚的纸张，具有足够的强度。
实施例三
实施例三与实施例一或实施例二基本相同，不同点在于，所述的瓦楞纸张3为平面结构，瓦楞纸张为能够进行各种造型设计的锡纸、塑料纸、硅油纸、玻璃纸或者柏油纸。因为内杯纸张2是较厚的纸张，通过这种封边结构与外层纸一同卷绕形成的卷口后，依旧具有足够的强度。
本文中所描述的具体实施例仅仅是对本发明范围作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的范围或者超越所附权利要求书所定义的范围。

Claims (11)

  1. 一种瓦楞纸杯，包括由扇形片材（11）卷绕形成的杯体，所述扇形片材（11）包括内杯纸张（2）和粘接在内杯纸张（2）外周面上的单层瓦楞纸张（3），其特征在于，所述瓦楞纸张第一端（31）与内杯纸张第一端（21）错位且平行，从而形成扇形片材（11）的第一斜边（111），所述瓦楞纸张第二端（32）与内杯纸张第二端（22）齐平，形成扇形片材（11）的第二斜边（112），所述扇形片材（11）展开后的瓦楞条形方向为从第一斜边（111）到第二斜边（112）方向的横向条纹，所述扇形片材（11）卷绕形成密封封边时，所述扇形片材（11）的第二斜边（112）和第一斜边（111）层叠形成至少三层纸张相贴合粘接的封边区域（4），所述扇形片材（11）靠近上弧边（113）的瓦楞空腔区域压平后形成厚度小于扇形片材（11）中间部分的厚度，且被挤压的瓦楞空腔区域的一部分随内杯纸张（2）一起向外卷边形成卷口（51）。
  2. 根据权利要求2所述的瓦楞纸杯，其特征在于，所述扇形片材（11）的上弧边（113）和下弧边（114）中的瓦楞纸张和内杯纸张相平齐，所述扇形片材（11）靠近下弧边（114）的瓦楞空腔区域压平后形成厚度小于扇形片材（11）中间部分的厚度，且被挤压的瓦楞空腔区域的一部分随内杯纸张（2）一起向内折边形成杯底脚（61）。
  3. 根据权利要求1或2所述的瓦楞纸杯，其特征在于，所述扇形片材（11）靠近上弧边（113）区域或靠近下弧边（114）区域压平后，压扁的瓦楞空腔形成有褶皱并这些褶皱卷绕进卷口（51）或者杯底脚（61）。
  4. 根据权利要求3所述的瓦楞纸杯，其特征在于，所述内杯纸张（2）厚度大于瓦楞纸张（3）的厚度。
  5. 根据权利要求3所述的瓦楞纸杯，其特征在于，所述瓦楞纸张（3）的瓦楞为直条纹瓦楞，且直条纹方向且与第一斜边（111）相垂直。
  6. 根据权利要求3所述的瓦楞纸杯，其特征在于，所述瓦楞纸张（3）的瓦楞为沿着第一斜边（111）到第二斜边（112）的横向波浪状条纹。
  7. 根据权利要求3所述的瓦楞纸杯，其特征在于，所述瓦楞纸张（3）的瓦楞为沿着第一斜边（111）到第二斜边（112）的横向分布的不连续瓦楞空腔，包括圆点状的瓦楞空腔或者矩形状的瓦楞空腔。
  8. 根据权利要求1所述的瓦楞纸杯，其特征在于，所述扇形片材（11）的第一斜边（111）具有未被瓦楞纸张（3）覆盖的内杯纸张区域，该区域为粘接部（211），所述内杯纸张第二端（22）粘接在瓦楞纸张第一端（31）外侧面时，所述的封边区域（4）包括由所述瓦楞纸张第二端（32）、内杯纸张第二端（22）、瓦楞纸张第一端（31）和内杯纸张第一端（21）形成四层强化结构以及由所述瓦楞纸张第二端（32）、内杯纸张第二端（22）和粘接部（211）形成的三层水密封结构。
  9. 根据权利要求1所述的瓦楞纸杯，其特征在于，所述扇形片材（11）的第一斜边（111）具有未被瓦楞纸张（3）覆盖的内杯纸张区域，该区域为粘接部（211），所述内杯纸张第二端（22）仅粘接在粘接部（211）时，瓦楞纸张第一端（31）和瓦楞纸张第二端（32）相对齐或者留有间隙，所述的封边区域（4）包括由所述瓦楞纸张第二端（32）、内杯纸张第二端（22）和粘接部（211）形成的三层水密封结构。
  10. 根据权利要求8或9所述的瓦楞纸杯，其特征在于，所述的内杯纸张（2）内壁上设置有防水层（8），所述的粘接部（211）搭接在内杯纸张第二端（22）的内侧面并形成密封粘接连接时，所述防水层（8）的一端与防水层（8）本体相连接。
  11. 根据权利要求10所述的双层瓦楞纸杯，其特征在于，所述的纸杯还包括杯底（6），所述的杯底（6）上设有粘结层（62），所述的扇形片材（11）的下弧边（114）挤压后形成弯折区（7），弯折区（7）的端部向内弯折形成折叠层（71），所述的粘结层（62）密封粘接在弯折区（7）和折叠层（71）之间。
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