WO2017219956A1 - 一种纸杯及其加工工艺 - Google Patents

一种纸杯及其加工工艺 Download PDF

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Publication number
WO2017219956A1
WO2017219956A1 PCT/CN2017/089125 CN2017089125W WO2017219956A1 WO 2017219956 A1 WO2017219956 A1 WO 2017219956A1 CN 2017089125 W CN2017089125 W CN 2017089125W WO 2017219956 A1 WO2017219956 A1 WO 2017219956A1
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WIPO (PCT)
Prior art keywords
paper
cup
layer
inner layer
roller
Prior art date
Application number
PCT/CN2017/089125
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English (en)
French (fr)
Inventor
丁椒平
Original Assignee
丁椒平
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Publication date
Application filed by 丁椒平 filed Critical 丁椒平
Publication of WO2017219956A1 publication Critical patent/WO2017219956A1/zh

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    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • 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
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D1/00—Multiple-step processes for making flat articles ; Making flat articles
    • B31D1/0043—Multiple-step processes for making flat articles ; Making flat articles the articles being box parts not otherwise provided for
    • 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
    • B32B1/00—Layered products having a non-planar shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
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    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
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    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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    • 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
    • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
    • 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
    • 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
    • B65D3/22—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
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7132—Bowls, Cups, Glasses
    • 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
    • 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
    • B31B2105/002—Making boxes characterised by the shape of the blanks from which they are formed
    • B31B2105/0022—Making boxes from tubular webs or blanks, e.g. with separate bottoms, including tube or bottom forming operations
    • 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
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    • B31B2120/002—Construction of rigid or semi-rigid containers having contracted or rolled necks, having shoulders
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
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    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
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Definitions

  • the invention belongs to the technical field of paper containers, and relates to a paper cup, in particular to a paper cup and a processing technique thereof.
  • a paper cup is a kind of paper container which is made by mechanically processing and bonding a base paper made of chemical wood pulp.
  • the technology of the existing anti-scalding paper cup is that a single layer of paper is pressed out of a single layer of paper.
  • the anti-scalding layer has a corrugated anti-scalding layer which is formed by heat-shrinking the surface layer paper and then sizing on the lining paper to form a sheet and sticking it on the outside of the paper cup to prevent the scalding.
  • the Chinese invention patent application discloses a corrugated paper cup and a manufacturing process thereof, wherein the paper cup comprises a cup body, a cup bottom and a cup sleeve, and the main point is that there is a cup sleeve in the cup body jacket, and the cup sleeve is a corrugated paper cup.
  • the sleeves are arranged in a row, or are provided with grooves on the horizontally arranged stringers.
  • the production process is divided into two parts: a paper cup, a corrugated paper cup, and a set of cups.
  • the corrugated paper cup is formed by a cup machine, and the interface is ultrasonically generated by an ultrasonic wave.
  • the roll of the paper cup has a single-layer structure, and the strength is weak.
  • the processing method of the cup body by the cup sleeve may result in insufficient bonding strength between the two, and the support effect of the corrugation may be invalid when the force is applied during use, but
  • the strength of the support of the paper cup in the hand is mainly derived from the above-mentioned roll, so the paper cup needs to compensate for the lack of strength by thickening the thickness of the paper. For this reason, the paper weight of the cup and the cup needs to reach 300 g/ The square meter has high processing cost.
  • the shortcomings of the manufacturing process include increasing the die-cutting and molding production process, increasing the paper cost and paper thickness of the anti-scalding layer, resulting in an increase in the height of the paper cup after stacking. Added volume, increased packaging, storage, transportation costs.
  • the object of the present invention is to solve the above problems in the prior art, and proposes a paper cup which has high strength and a good anti-scalding effect.
  • the object of the present invention is to solve the above problems in the prior art, and propose a processing technology of a paper cup, which can process a paper cup with high strength and good anti-scalding effect.
  • a paper cup comprising a cup body, the cup body comprising an inner layer paper and an outer layer paper, wherein the inner layer paper and the outer layer paper are each a single layer Paper, the outer paper has a plurality of hollow protrusions protruding outward for anti-scalding, the outer paper is located at a portion between adjacent hollow protrusions to form a connecting portion, and the inner side of the connecting portion is The outer side surface of the inner layer of paper is attached and fixed, the edge of the cup of the outer layer of paper extends to the edge of the cup of the inner layer of paper, and the outer side of the cup of the inner layer of paper is attached to the inner side of the cup of the outer layer of paper. Further, the outer edge of the outer paper and the inner edge of the paper are bent outward to form a double-layered roll, and the cross-section of the outer ring is annular, and the bottom of the cup is fixed with a bottom.
  • the outer paper forms an ordered arrangement of hollow protrusions by bending, and the inner side surface of the connecting portion is adhered to the outer side surface of the inner layer paper to form an integrated double-layer structure, which serves to strengthen the supporting strength, and the adjacent two hollow protrusions
  • the air is isolated from each other and does not flow to each other.
  • connection portion is spaced apart such that the reinforcing effect of the connecting portion and the reinforcing effect of the hollow protrusion are evenly distributed along the height direction of the cup body, and the combination further increases the strength of the cup body, and further, since the lower end of the cup body is bottomed by the cup bottom Supporting, and the upper end of the cup is annular, so the port edge of the cup is bent outward to form a double
  • the roll of the layered paper structure also functions as a reinforcing rib, thereby improving the strength of the edge of the cup mouth, avoiding the deformation of the cup by the edge of the cup, wherein the inner and outer layers of the roll are It is attached and fixed, so that the inner layer paper and the outer layer paper form a whole and have high support strength.
  • the connecting portion has a ring shape or a continuous strip shape, and the connecting portion has a width of 1 mm to 12 mm.
  • the connecting portion has a ring shape, so that the hollow protrusion can be annular, and the cup body is radially stressed when the cup body is held, so the hollow protrusion is disposed around the inner layer paper, and each hollow protrusion can bear a certain radial force.
  • the arrangement is arranged along the height direction of the cup body, so that the plurality of hollow protrusions have a higher supporting strength to the cup body, and the connecting portion and the inner layer paper have a certain connecting area, and the connecting area is between the outer layer paper and the inner layer paper.
  • the joint strength and the support strength of the cup body are strengthened.
  • the hollow protrusions can be continuous elongated strips, and the same has better support strength.
  • the weight of the outer layer paper and the inner layer paper is 100 to 170 g/square meter. Since the cup body is uniformly distributed with hollow protrusions, and the roll mouth adopts a two-layer paper structure which is fixed by the phase, the cup body has high support strength, so the thickness of the inner layer paper and the outer layer paper can be reduced, that is, The weight of the outer paper and the inner paper is reduced to 100-170 g/square meter, which saves paper, protects the environment and reduces production costs.
  • the outer edge of the cup bottom is bent downward to form a supporting flange, the lower end edge of the cup is bent inward, and the inner side of the inner layer of paper is matched with the inner side of the supporting flange.
  • the main purpose of supporting the flange is to support the cup, but it can also improve the strength of the bottom of the cup.
  • the support can be wrapped, that is, the structure supporting the cup is two inside and outside.
  • the outer layer paper, the inner and outer layers of inner paper and the five-layer paper structure supporting the flange have strong support ability. Further, the upper edge of the outer paper is bent and hidden inside the curl, and the lower edge is bent.
  • the connecting portion has a strip shape and/or a block shape, and a plurality of connecting portions are arranged on the outer side surface of the paper cup to form a pattern, and the connecting portion has a width of 1 mm to 12 mm.
  • the cup surface can be provided with various rich drawing elements, such as the pattern of palm trees expressed by strips, blocks and different widths.
  • the pattern presentation is achieved by replacing the joint with a hollow projection.
  • a processing technology for a paper cup comprising the steps of:
  • Preparation paper take the outer paper and wind it into a cylinder, take the inner layer paper and wind it into a cylinder, wherein the weight of the outer paper and the inner paper are 100-170 g/square meter;
  • D slicing: the double-layer paper is unfolded and die-cut out of a fan-shaped cup having two opposite straight edges and two opposite curved edges;
  • the weight of the inner layer paper and the outer layer paper is limited to between 100 g/square meter and 170 g/square meter to reduce the amount of paper and reduce the production cost, and the shortage of the paper is insufficient. Then, by pressing a plurality of ridges on the outer paper, and then fixing the outer paper and the inner paper together before winding into the cylindrical cup, a hollow protrusion having a higher supporting strength is formed.
  • the outer layer paper is first wound into a cylindrical outer cup body, the inner layer paper is wound into a cylindrical inner cup body, and then the outer cup body is sleeved on the inner cup body.
  • the process firstly fixes the outer paper of the roll out of the embossing with the inner layer paper, so that the outer paper and the inner layer paper are better integrated before being wound into the cylindrical cup body, and the outer layer is spread out.
  • the adhesion of the paper to the spread inner paper can make the connection quality of the two higher, avoiding the local voids caused by insufficient bonding strength, and then the double layer with higher connection quality and connection stability.
  • the paper is wound into a cylindrical cup body, so that the cup body has a higher supporting strength. Further, the process is to bend the double-layer paper structure which is fixedly connected together, and the winding mouth is also strengthened.
  • the outer paper passes between the engaging convex roller and the concave roller, and the temperature of the outer paper is smaller when the convex roller and the concave roller press the outer paper.
  • the outer paper has a water content of 5.5% to 7%, and the height of the relief on the outer paper after rolling is 0.3 mm to 1 mm, and the roll-formed outer paper is placed against the concave roller and follows the concave roller. Turn to the other side of the concave roller to perform step C.
  • the temperature and humidity of the outer paper determine the degree and stability of the outer paper deformation, and the outer layer is in the above temperature and humidity range.
  • the embossing quality of the paper roll is higher, wherein the embossing height affects the height of the hollow bulge after the outer paper and the inner paper are fixed in the step C, thereby affecting the support strength and the anti-scalding effect of the cup.
  • different relief patterns can be imprinted.
  • the outer paper is placed against the outer side surface of the concave roller, the inner paper is placed against the outer side surface of the round roller, and the outer paper is close to the inner paper and abuts against
  • the shower head is positioned above the gap between the concave roller and the round roller before the outer paper and the inner paper abut against each other while simultaneously rinsing the opposite sides of the outer paper and the inner paper
  • the film or glue head is positioned above the gap between the concave roll and the round roll while simultaneously coating the opposite sides of the outer and inner layers of paper.
  • the outer paper and the inner paper are respectively brought together by the concave roller and the round roller, and the adhesive needs to be added before the abutting, and the manner for connecting the outer paper and the inner paper is various, and the typical selection is typical.
  • Laminating or gluing bonding when laminating is selected, it is necessary to pass the laminating machine to place the laminating head of the laminating machine above the gap between the concave roller and the round roller, so the outer paper and the inner paper
  • the sides have a coating layer before the abutting, and then the composite is forced to make the outer paper and the inner paper have higher joint strength and stability.
  • the glue coating is required to pass the glue coating machine.
  • the rubber coating head of the coating machine is placed above the gap between the concave roller and the round roller, so that the outer paper and the side surface of the inner paper have a glue layer before being abutted against each other, and then the force is compounded, so that the outer layer
  • the layer paper and the inner layer paper have high connection strength and stability, thereby ensuring the support strength and anti-scaling effect of the body.
  • step C when the outer paper and the inner paper are glued, the amount of glue is 5 g/square meter to 15 g/square meter, or when the outer paper is When the inner layer paper is laminated by lamination, the thickness of the coating is 0.007 mm to 0.018 mm.
  • the amount of glue determines the strength of the connection between the outer paper and the inner paper by gluing. If the glue is too much, the glue will overflow, and the amount of glue will be wasted. If the glue is too small, the joint strength will be insufficient.
  • the film is compounded by laminating The film thickness determines the connection strength between the outer paper and the inner paper. If the thickness of the coating is too large, the coating is wasted. If the thickness of the coating is too small, the joint strength is insufficient.
  • the round roller is a rubber roller having a hardness of 45 to 95
  • the pressure of the round roller and the concave roller on the outer paper and the inner layer paper is 40N to 80N, so that the pressure is 40N to 80N.
  • One side of the layer of paper is partially tiled and bonded to the side of the inner layer of paper to form a joint between adjacent hollow projections having a width of 4 mm to 12 mm.
  • the pressure between the round roller and the concave roller on the outer paper and the inner paper will affect the joint strength between the outer paper and the inner paper, that is, the excessive pressure causes the adhesive between the outer paper and the inner paper to be squeezed.
  • connection strength is insufficient, and if the pressure is too small, a gap between the outer layer paper and the inner layer paper is easily caused, resulting in insufficient joint strength, correspondingly, bonding.
  • the surface directly reflects the connection strength between the outer paper and the inner layer paper.
  • the height of the hollow protrusion directly reflects the size of the heat insulating cavity, and the larger the width of the bonding surface, the smaller the inner cavity space of the hollow protrusion. That is, the heat insulation effect is lowered. Therefore, considering the above factors, when the width of the bonding surface is set to 4 mm to 12 mm, the outer paper and the inner layer paper have a high joint strength and a good heat insulating effect.
  • the embossed roll is evenly distributed on the outer paper in step B, and the outer paper (12) is flattened by the hot pressing plate between steps C and D, thereby forming A plurality of sets of ridges, each of which has a fan-shaped arrangement.
  • the outer paper is partially flattened by a hot pressing plate, thereby forming a plurality of sets of ridges, and then the plurality of sets of embossing are die-cut in step D.
  • One set of embossing corresponds to one cup, and is flattened by a hot pressing plate. The portion forms a flat edge of the cup for the crimp and the wrapping support flange, and the straight edge of the cup is flattened for winding into a cylindrical post-bonding joint.
  • the concave roller and the convex roller roll out a plurality of sets of spaced-apart ridges on the outer paper, so that the outer paper is located between the adjacent two sets of ridges.
  • the scalloped cup containing a set of embossments is die cut and the edge of the cup is flat.
  • the two-layer paper of this structure already has a flat portion between each set of ridges, so the die-cut scalloped cup has a flat rim, so that it does not need to be flattened before being wound into a cup.
  • the inner cavity of the hollow protrusion serves to isolate heat transfer, so that heat is not transmitted to the outer surface of the hollow protrusion, thereby having better protection. Hot effect.
  • the port edge of the cup body is bent outward to form a roll of double-layer paper structure, wherein the inner layer paper of the roll mouth and the outer paper are attached and fixed, thereby avoiding deformation of one layer of paper The other layer of paper is deformed, so that the inner layer paper is formed integrally with the outer layer paper and has a high support strength.
  • the outer layer paper and the inner layer paper are better integrated before being wound into a cylindrical cup body, and then The double-layer paper with higher connection quality and connection stability is wound into a cylindrical cup body, so that the cup body has high support strength, so the weight of the inner layer paper and the outer layer paper can be limited to 100 g / Between every square meter and 170 grams per square meter to reduce paper consumption and reduce production costs.
  • Figure 1 is a cross-sectional view showing the structure of a paper cup.
  • Figure 2 is a flow chart of the processing of the paper cup.
  • FIG. 3 is a simplified flow chart of steps B, C.
  • FIG. 4 is a schematic structural view of a cup piece.
  • Fig. 5 is a schematic view showing the structure of the double-layer paper in the second embodiment when it is not die-cut.
  • Figure 6 is a flow chart showing the processing of the paper cup in the fifth embodiment.
  • Fig. 7 is a cup surface pattern of the sixth embodiment.
  • the cup body 11, the inner layer paper; 12, the outer layer paper; 121, the hollow protrusion; 122, the connecting portion; 2, the cup piece; 3, the roll mouth; 4, the bottom of the cup; Edge; 5, convex roller; 6, concave roller; 7, round roller; 8, sprinkler; 9, double-layer paper.
  • a paper cup includes a cup body 1.
  • the cup body 1 includes an inner layer paper 11 and an outer layer paper 12, and the inner layer paper 11 and the outer layer paper 12 are each a single layer paper, and the outer layer paper 12 has A plurality of hollow protrusions 121 for preventing the ironing are outwardly protruded, and the outer layer 12 is located between the adjacent two hollow protrusions 121 to form a connecting portion 122, and the inner side surface of the connecting portion 122 is attached to the outer side surface of the inner layer paper 11.
  • the rim of the outer layer 12 extends to the edge of the cup edge of the inner layer of paper 11, and the outer side of the cup of the inner layer of paper 11 is attached to the inner side of the cup of the outer layer of paper 12, and the outer layer of paper 12 and the edge of the cup edge of the inner layer paper 11 are outwardly bent to form a double-layered roll mouth 3, and the cross-section of the roll mouth 3 is annular,
  • the layer paper 12 is formed by bending to form an ordered array of hollow protrusions 121, and the inner side surface of the connecting portion 122 is in contact with the outer side surface of the inner layer paper 11 and the adjacent two hollow protrusions 121 are air-isolated and do not flow with each other.
  • the inner cavity of the hollow protrusion 121 functions to block heat transfer, so that heat is not transmitted to the outer surface of the hollow protrusion 121, thereby having better performance.
  • the anti-scalding effect further, since the hollow cup 121 is pressed against the hollow protrusion 121, the hollow protrusion 121 functions to strengthen the stiffness, and has better support effect on the cup body 1, thereby improving the cup body 1
  • the port edge of the cup body 1 is bent outward to form a double-sheet structure of the roll mouth 3
  • the crimping port 3 also functions as a reinforcing rib, thereby improving the strength of the edge of the cup 1 of the cup body, and preventing the cup body 1 from being deformed by the edge of the cup, wherein the inner layer 11 and the outer layer 12 of the roll 3 are The inner layer 11 and the outer layer 12 are
  • the connecting portion 122 is annular and disposed around the inner layer paper 11, and the plurality of connecting portions 122 are arranged along the height direction of the cup body 1, that is, hollow.
  • the protrusions 121 are annular, and each of the hollow protrusions 121 can bear a certain radial force, and is arranged in the height direction of the cup body 1 so that the plurality of hollow protrusions 121 have a high support strength to the cup body 1.
  • the connecting portion 122 has a width of 8 mm, and the connecting portion 122 has a certain connecting area with the inner layer paper 11, and the connecting area strengthens the connection strength between the outer layer paper 12 and the inner layer paper 11 and the support strength of the cup body 1.
  • the connecting portion 122 may also have a continuous strip shape, so that the hollow protrusions 121 also have a strip shape, or the hollow protrusions 121 have a circular or polygonal shape with good supporting effect, due to the cup.
  • the hollow protrusions 121 are uniformly distributed on the body 1, and the roll mouth 3 is formed by a two-layer paper structure which is fixed to each other, so that the cup body 1 has a high supporting strength, so that the thickness of the inner layer paper 11 and the outer layer paper 12 can be reduced. That is, the weight of the outer paper 12 and the inner paper 11 can be reduced to 130 g/square meter, which saves paper, protects the environment, and reduces the production cost.
  • the outer edge of the cup bottom 4 is bent downward to form a supporting flange 41, and the lower end edge of the cup 1 is bent inward. And the inner side surface of the inner layer paper 11 is fixedly attached to the inner side surface of the supporting flange 41.
  • the main purpose of supporting the flange 41 is to support the cup body 1, but the strength of the cup bottom 4 can also be improved, and the body of the body can be improved. After the lower end is bent inwardly, the support flange 41 can be wrapped, that is, the structure for supporting the cup body 1 is an inner and outer two outer layer paper 12, two inner and outer inner layer papers 11 and a five-layer paper structure supporting the flange 41. Has a strong support ability.
  • the processing process of the paper cup comprises the following steps:
  • one side of the outer layer 12 of the rolled paper is attached to the side of the inner layer of paper 11 to form a double layer of paper 9, so that the other side of the outer layer of paper 12 is formed with a hollow protrusion 121;
  • cup 2 is rolled into a cylindrical shape and the cup body 1 is gradually reduced in diameter from top to bottom, and then the two straight edges of the cup piece 2 are attached and fixed, and then the cup of the double-layer paper structure is attached.
  • the rim is bent outward to form a roll mouth 3 having a circular cross section;
  • the weight of the inner layer 11 and the outer layer 12 is limited to 130 g/square meter to reduce the amount of paper and reduce the production cost, and the problem of insufficient strength for the reduction of the amount of paper is passed through the outer paper 12
  • the roller is pressed out of the ridge, and then the outer layer paper 12 and the inner layer paper 11 are fixedly joined together before being wound into the cylindrical cup body 1, thereby forming a hollow protrusion 121 having a higher supporting strength to improve the cup body.
  • 1 support strength compared with the conventional process, the outer paper 12 is first wound into a cylindrical outer cup body, the inner layer paper 11 is wound into a cylindrical inner cup body, and then the outer cup body is sleeved on the inner cup body.
  • the outer paper 12 of the embossed embossing is fixed to the inner paper 11 so that the outer paper 12 and the inner paper 11 are wound into the cylindrical cup 1 before being better.
  • Holistic, and The spread of the outer paper 12 and the spread inner paper 11 can make the connection quality of the two higher, avoiding the local void due to insufficient bonding strength, and then having higher connection quality.
  • the double-layer paper 9 having the connection stability is wound into the cylindrical cup body 1 so that the cup body 1 has a high supporting strength, wherein the cup piece 2 is wound and the two edges are bonded together, and the bonded joint is bonded.
  • the sutures are axially along the cup 1 and can of course be relatively inclined.
  • the process is to bend the two-layer paper 9 structure that is fixed together to bend the roll mouth 3, and the roll mouth 3 also functions as a reinforcing rib, thereby improving the strength of the cup edge of the cup body 1 and avoiding the cup mouth.
  • the edge indentation causes the cup body 1 to be deformed, wherein the inner layer paper 11 of the roll mouth 3 and the outer layer paper 12 are attached and fixed, so that the deformation of the other layer of paper after the deformation of one layer of paper can be avoided, so that the inner layer
  • the paper 11 is integrally formed with the outer paper 12, has a high supporting strength, and is further supplemented. Since the inner layer 11 and the outer paper 12 have a high connection quality, the hollow protrusion 121 can be prevented from being affected. After the force, the invagination is in contact with the inner layer paper 11, so that the hollow protrusion 121 can always provide a stable heat insulation space when the cup body 1 is held, and has a good anti-scalding effect.
  • step B the outer paper 12 passes between the engaging convex roller 5 and the concave roller 6, and the outer paper 12 is deformed by the pressure of the convex roller 5 and the concave roller 6.
  • the temperature and humidity of the outer paper 12 both determine the degree of deformation and stability of the outer paper 12, so in the present embodiment, the temperature of the outer paper 12 when the convex roller 5 and the concave roller 6 roll the outer paper 12 is At 85 ° C, the outer paper 12 has a water content of 6.25%, so that the outer paper 12 is pressed into a higher quality of the relief, and the height of the relief on the outer paper 12 after rolling is 0.7 mm, wherein the height of the relief is affected.
  • step C The height of the hollow protrusion 121 after the outer paper 12 and the inner layer paper 11 are fixed in the step C, thereby affecting the supporting strength and the anti-scalding effect of the cup body 1, and the roll-formed outer paper 12 abuts on the concave roller 6 and Step C is performed as the concave roller 6 is rotated to the other side of the concave roller 6.
  • step C the outer layer paper 12 abuts against the outer side surface of the concave roller 6, the inner layer paper 11 abuts against the outer side surface of the round roller 7, and the outer layer paper 12 abuts against the inner layer paper 11 and abuts against it.
  • a laminating machine is required for lamination.
  • the laminating film When the laminating film is laminated, it is necessary to pass the laminating machine to place the shower head 8 of the laminating machine between the concave roller 6 and the round roller 7. Above, so the outer paper 12
  • the side surface of the inner layer paper 11 has a laminating layer before being abutted against each other, and then is subjected to force recombination, so that the outer layer paper 12 and the inner layer paper 11 have high joint strength and stability.
  • the round roller 7 and the concave roller 6 partially tiling and bonding one side of the outer layer paper 12 to the side surface of the inner layer paper 11, thereby forming a connecting portion 122 between the adjacent two hollow projections 121,
  • the pressure of the round roll 7 and the concave roll 6 on the outer layer paper 12 and the inner layer paper 11 will affect the joint strength between the outer layer paper 12 and the inner layer paper 11, i.e., if the pressure is too large, the outer layer paper 12 and the inner layer paper 11 are caused.
  • the adhesive is squeezed out to cause insufficient joint strength. If the pressure is too small, voids between the outer paper 12 and the inner paper 11 are easily caused, resulting in insufficient joint strength, and correspondingly, the adhesive surface is intuitive.
  • the height of the hollow protrusion 121 intuitively reflects the size of the heat insulating cavity, and the larger the width of the bonding surface, the smaller the inner cavity space of the hollow protrusion 121 That is, the heat insulating effect is lowered. Therefore, in consideration of the above factors, in the embodiment, when the width of the connecting portion is set to 8 mm, the outer paper 12 and the inner layer paper 11 have a high joint strength and a good heat insulating effect. .
  • the thickness of the outer film 12 and the inner layer 11 are determined by the thickness of the coating when the lamination is combined.
  • the thickness of the coating was 0.012 mm.
  • the embossed roll formed in step B is evenly distributed on the outer layer paper 12, and the outer layer paper 12 is flattened by the hot pressing plate between steps C and D to form a plurality of sets of ridges, each set of ridges being In a fan-shaped arrangement, the outer paper 12 is partially flattened by a hot pressing plate to thereby form a plurality of sets of ridges, and then the plurality of sets of embossing are die-cut in step D, and one set of embossing corresponds to one cup 2, and The flattened edge of the cup 2 is formed by the flattened portion of the hot platen.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the processing method of the paper cup is basically the same as that of the first embodiment, except that the difference is that as shown in FIG. 5: in the step B, the concave roller 6 and the convex roller 5 are rolled on the outer paper 12 to form a plurality of sets of closely arranged ridges.
  • the outer paper 12 is flattened between the adjacent two sets of ridges, and in step D, the scalloped cup 2 containing a plurality of embossments is die-cut and the edge of the cup 2 is flat.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the processing technology of the paper cup is basically the same as that of the first embodiment, and the difference lies in the following:
  • step A the outer paper 12 and the inner layer 11 have a weight of 100 g/square meter;
  • the temperature of the outer paper 12 is 80 ° C, and the outer paper 12 has a water content of 5.5%, and the outer paper 12 after rolling
  • the height of the ridge is 0.3 mm;
  • the pressure of the round roll 7 and the concave roll 6 on the outer paper 12 and the inner layer paper 11 is 40N, the width of the joint portion is 1 mm, and the thickness of the outer cover paper 12 and the inner layer paper 11 are laminated by lamination. It is 0.007mm.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the processing technology of the paper cup is basically the same as that of the first embodiment, and the difference lies in the following:
  • step A the outer paper 12 and the inner layer 11 have a weight of 170 g/square meter;
  • the temperature of the outer paper 12 is 75 ° C, the humidity of the outer paper 12 is 7%, and the outer paper 12 after rolling
  • the height of the ridge is 1mm;
  • the pressure of the outer roll paper 12 and the inner layer paper 11 of the round roll 7 and the concave roll 6 is 80 N
  • the width of the joint portion is 12 mm
  • the thickness of the outer cover paper 12 and the inner layer paper 11 are laminated by lamination. It is 0.018mm.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the processing technology of the paper cup is substantially the same as that of the first embodiment, except that as shown in FIG. 6, in the step C, the outer paper 12 abuts against the outer side surface of the concave roller 6, and the inner paper 11 abuts against the round roller 7. On the outer side surface, the outer paper 12 and the inner paper 11 are close to each other and abut against each other. Before the outer paper 12 and the inner paper 11 abut each other, a glue coating machine is required for coating.
  • the rubber coating head is located on the concave roller 6 Above the gap between the round roller 7 and at the same time
  • the opposite sides of the layer paper 12 and the inner layer paper 11 are glued, and the outer side paper 12 and the side surface of the inner layer paper 11 have a glue layer before being abutted against each other, and then are bonded by force, so that the outer layer paper 12 and the inner layer 12
  • the layer paper 11 has high connection strength and stability, and further ensures the support strength and anti-scalding effect of the body.
  • the glue amount determines the connection strength between the outer paper 12 and the inner layer paper 11 by glue bonding, and the glue passes. In many cases, the glue overflows, the amount of glue is wasted, and the glue is too small, resulting in insufficient joint strength.
  • the amount of glue when the outer layer paper 12 and the inner layer paper 11 are bonded by the glue is 10 g/square meter, of course.
  • the amount of glue when the outer layer paper 12 and the inner layer paper 11 are bonded by gluing may also be 5 g/square meter or 15 g/square meter.
  • the sixth embodiment is a paper cup having a special pattern, which adopts the same structure and preparation process in the first embodiment, except that the pattern of the cup surface is not annular, and is formed by the connecting portion 122.
  • the block shape is arranged in a pattern on the outer side surface of the paper cup by the plurality of connecting portions 122, and the width of the connecting portion 122 is 1 mm to 12 mm, and preferably 6 mm in this example.
  • This structure can achieve not only an anti-scalding effect but also a good strength in the case where relatively thin inner layer paper 11 and outer layer paper 12 are used.
  • inner layer paper 11, outer layer paper 12, hollow protrusions 121, and the like are used more herein, the possibility of using other terms is not excluded. These terms are only used to describe and explain the nature of the invention more conveniently; it is to be construed that any additional limitation is inconsistent with the spirit of the invention.

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Abstract

一种纸杯及其加工工艺，属于纸容器技术领域，它解决了现有纸杯强度不足，防烫效果差的问题。本纸杯，包括杯体（1），杯体（1）包括内层纸（11）和外层纸（12），外层纸（12）上具有空心凸起（121），外层纸（12）形成连接部（122），连接部（122）内侧面与内层纸（11）外侧面相贴合固连，外层纸（12）的杯口边沿延伸至内层纸（11）的杯口边沿，且内层纸（11）的杯口外侧面与外层纸（12）的杯口内侧面相贴合固连，外层纸（12）与内层纸（11）的杯口边沿均向外弯折形成双层结构的卷口（3）；本纸杯的加工工艺包括备纸、辊压、复合、切片、成型、定型等步骤。本纸杯具有较高的强度和较好的防烫效果，本纸杯的加工工艺能够加工出强度较高、防烫效果较好的纸杯。

Description

一种纸杯及其加工工艺 技术领域
本发明属于纸容器技术领域，涉及一种纸杯，尤其涉及一种纸杯及其加工工艺。
背景技术
纸杯是把用化学木浆制成的原纸进行机械加工、粘合所做得的一种纸容器，现有防烫纸杯的技术是在单层纸内杯外套上由单层纸压出有凹凸状的防烫层，也有一种瓦楞防烫层是由面层纸经过加热缩比后定型复合在衬纸上横切成片包贴在纸杯外面起到防烫作用。
如中国发明专利申请(申请号：200610154962.8)公开了一种瓦楞纸杯及其制作工艺，其中纸杯包括杯身、杯底和杯套,要点是在杯身外套有杯套,此杯套是瓦楞纸杯套,其楞条呈横行排列,或在横行排列的楞条上设有凹槽。制作流程分纸杯制作、瓦楞纸杯套扇形片二个分工序和套杯一个总工序进行；瓦楞纸杯套扇形片经套杯机模具卷合成型、接口由超声波产生的瞬间热量烫合成为瓦楞纸杯套,内壁涂胶后与纸杯套合。该纸杯的卷口为单层结构，强度较弱，同时通过杯套套设杯体的加工方式会导致两者的粘结强度不足，在使用过程中受力时容易导致瓦楞的支撑效果失效，但是纸杯捏在手里的支撑强度主要来源于上面的卷口，因此该种纸杯需要通过加厚纸片厚度来弥补强度不足的缺陷，为此加工杯身和杯套的纸张重量需要达到300克/平方米，加工成本较高，同时该制作工艺的缺点还有增加模切、成型生产工序，增加防烫层的纸张成本和纸张厚度，导致纸杯叠加后的高度增加，增 加了体积，增加包装，存储、运输成本。
发明内容
本发明的目的是针对现有的技术存在上述问题，提出了一种纸杯，该纸杯具有较高的强度和较好的防烫效果。
本发明的目的是针对现有的技术存在上述问题，提出了一种纸杯的加工工艺本，该纸杯的加工工艺能够加工出强度较高、防烫效果较好的纸杯。
本发明的目的可通过下列技术方案来实现：一种纸杯，包括杯体，所述杯体包括内层纸和外层纸，其特征在于，所述内层纸与外层纸均为单层纸，所述外层纸上具有若干向外凸出用于防烫的空心凸起，所述外层纸位于相邻两空心凸起之间部分形成连接部，所述连接部的内侧面与内层纸的外侧面相贴合固连，所述外层纸的杯口边沿延伸至内层纸的杯口边沿，且内层纸的杯口外侧面与外层纸的杯口内侧面相贴合固连，所述外层纸与内层纸的杯口边沿均向外弯折形成双层结构的卷口，且卷口的横截面呈环形，所述杯体的底部固连有杯底。
外层纸通过弯折形成有序排列的空心凸起，而连接部内侧面与内层纸外侧面相贴合后形成一体的双层结构，起到加强支撑强度作用，相邻的两空心凸起之间空气隔离，不会相互流动，手持杯体时按压在空心凸起外表面时，此时空心凸起的内腔起到隔绝热量传递的作用，使得热量不会传递至空心凸起外表面，从而具有较好的防烫效果，进一步的，由于手持杯体时按压在空心凸起上，空心凸起则起到加强挺度的作用，对杯体具有较好的支撑效果，同时空心凸起与连接部为间隔设置，使得连接部的加强效果与空心凸起的加强效果沿杯体高度方向均布，相结合后进一步的提高杯体的强度，在进一步，由于杯体的下端由杯底进行支撑，而上端杯口处呈环形，因此本杯体的端口边沿向外侧弯折形成双 层纸结构的卷口，该卷口也起到加强筋的作用，从而提高杯体杯口边沿的强度，避免杯口边沿内陷导致杯体变形，其中卷口的内层纸与外层纸是相贴合固连的，因此使得内层纸与外层纸形成一个整体，具有较高的支撑强度。为了环保和防烫的效果，可以采用漂白或者非漂白的植物纤维，如草浆、竹浆等。
在上述的纸杯中，所述连接部呈环形或者连续的条形，且连接部的宽度为1mm～12mm。连接部呈环形，使得空心凸可以呈环形，手持杯体时杯体为径向受力，因此空心凸起环绕内层纸设置，每一空心凸起均能够承受一定的径向受力，在结合沿杯体高度方向排列设置，使得多根空心凸起对杯体具有较高的支撑强度，而连接部与内层纸具有一定的连接面积，该连接面积对外层纸与内层纸之间的连接强度以及杯体的支撑强度起到加强，当连接部呈连续的条形时，使得空心凸起可以是连续的长条状，同一具有较好的支撑强度。
在上述的纸杯中，所述外层纸与内层纸的重量均为100～170克/每平方米。由于本杯体上均布空心凸起，且卷口采用相固连的双层纸结构，使得杯体具有较高的支撑强度，因此内层纸与外层纸的厚度可以减小，即能够将外层纸与内层纸的重量减小到100～170克/每平方米，起到节约纸张、环保并降低生产成本的作用。
在上述的纸杯中，所述杯底的外边沿向下弯折形成支撑翻边，所述杯体的下端边沿向内弯折，且内层纸的内侧面与支撑翻边的内侧面相贴合固连。支撑翻边的主要目的是对杯体进行支撑，但是也能够提高杯底的强度，而将本体的下端向内弯折后能够将支撑翻边包裹，即对杯体进行支撑的结构为内外两层外层纸、内外两层内层纸以及支撑翻边的五层纸结构，具有较强的支撑能力,进一步的，外层纸的上端边沿弯折并隐藏在卷口内侧，下端边沿弯折并隐藏在支撑翻边内侧，因此在使用过程中外层纸的上下端 口边沿均不会因为外力而脱离内层纸，消除了外层纸脱离内层纸的切入点，使得外层纸与内层纸的连接稳定性更高。
作为另一种方案，所述连接部呈条形和/或区块状，并由多个连接部在纸杯的外侧面排列形成花纹图案，所述的连接部的宽度为1mm～12mm。通过连接部的条形和/或区块状以及连接部不同的宽度,可以给杯面提供各种丰富的绘图要素，比如棕榈树的图案通过条形、区块和不同宽度来表现出来。反之，通过空心凸起代替连接部来实现图案呈现。
一种纸杯的加工工艺，其特征在于，包括如下步骤：
A：备纸：取外层纸并卷绕成筒，取内层纸并卷绕成筒，其中外层纸和内层纸的重量均为100～170克/每平方米；
B：辊压：将外层纸拉出并在外层纸上辊压出若干凸纹；
C：复合：将辊压后的外层纸一侧面与内层纸侧面相贴合固连形成双层纸，使得外层纸的另一侧凸纹形成空心凸起；
D：切片：将双层纸展开并模切出具有两相对直边沿和两相对弧形边沿的扇形杯片；
E：成型：将杯片卷成筒状且直径由上至下逐渐变小的杯体，然后将杯片的两直边沿相贴合固连，再将双层纸结构的杯口边沿向外弯折形成横截面呈环形的卷口；
F：定型：将杯体的下端边沿向内弯折并通过热压粘附在杯底的支撑翻边内侧面上。
本工艺中将内层纸与外层纸的重量限制在100克/每平方米到170克/每平方米之间，以减少纸张用量，降低生产成本，而对于纸张用量减少产生的强度不足问题，则通过在外层纸上辊压出若干凸纹，然后在卷绕成筒状杯体之前先将外层纸与内层纸固连在一起，从而形成具有较高支撑强度的空心凸起，以提高杯体的支撑强度，相比较传统工艺中先将外层纸卷绕成筒状外杯体、内层纸卷绕成筒状内杯体，然后将外杯体套在内杯体上粘接固连， 本工艺先将辊压出凸纹的外层纸与内层纸固连，从而使外层纸与内层纸卷绕成筒状杯体之前具有较好的整体性，且铺开的外层纸与铺开的内层纸相固连能够使两者的连接质量更高，避免出现局部由于粘合力度不够等原因导致的空隙，而再将具有更高连接质量和连接稳定性的双层纸卷绕成筒状的杯体，使得该杯体具有较高的支撑强度，进一步的，本工艺是将固连在一起的双层纸结构进行弯折卷口，该卷口也起到加强筋的作用，从而提高杯体杯口边沿的强度，避免杯口边沿内陷导致杯体变形，其中卷口的内层纸与外层纸是相贴合固连的，因此能够避免其中一层纸变形后导致另一层纸变形，使得内层纸与外层纸形成一个整体，具有较高的支撑强度，再进一步，由于内层纸与外层纸之间具有较高的连接质量，因此能够避免空心凸起受力后出现内陷而与内层纸接触，因此在手持杯体时空心凸起始终能够提供稳定的隔热空间，具有较好的防烫效果。
在上述的纸杯的加工工艺中，在B步骤中，外层纸从相啮合的凸辊与凹辊之间穿过，在凸辊与凹辊对外层纸进行辊压时外层纸的温度小于90℃，外层纸的含水量为5.5％～7％，辊压后外层纸上的凸纹高度为0.3mm～1mm，辊压成型的外层纸贴靠在凹辊上并随凹辊转动至凹辊的另一侧进行步骤C。在该工艺步骤中，外层纸在受到凸辊与凹辊的压力形变时，外层纸的温度与湿度均决定了外层纸形变的程度和稳定性，而在上述温度和湿度范围内外层纸辊压出的凸纹质量更高，其中凸纹高度影响步骤C中外层纸与内层纸固连后空心凸起的高度，进而影响杯体的支撑强度和防烫效果。根据凸辊和凹辊的图案，可以压印出不同的凸纹图案。
在上述的纸杯的加工工艺中，在步骤C中，外层纸贴靠在凹辊外侧面上，内层纸贴靠在圆辊外侧面上，外层纸与内层纸相靠拢并抵靠，其中在外层纸与内层纸相抵靠之前喷淋头位于凹辊与圆辊之间间隙的上方并同时对外层纸及内层纸的相对侧面进行淋 膜、或者涂胶头位于凹辊与圆辊之间间隙的上方并同时对外层纸及内层纸的相对侧面进行涂胶。外层纸和内层纸分别在凹辊和圆辊的带动下相靠拢，在靠拢抵靠之前需要添加粘合剂，而用于连接外层纸与内层纸的方式多样，其中典型的选择淋膜复合或者涂胶粘合，当选择淋膜复合时需要通过淋膜机，将淋膜机的淋膜头放置在凹辊与圆辊之间间隙的上方，因此外层纸与内层纸的侧面在贴合抵靠之前均具有淋膜层，然后受力复合，使得外层纸与内层纸具有较高的连接强度和稳定性，同样，选择涂胶粘合时需要通过涂胶机，将涂胶机的涂胶头放置在凹辊与圆辊之间间隙的上方，因此外层纸与内层纸的侧面在贴合抵靠之前均具有胶水层，然后受力复合，使得外层纸与内层纸具有较高的连接强度和稳定性，进而对本体的支撑强度和防烫效果提供保证。
在上述的纸杯的加工工艺中，步骤C中，当外层纸与内层纸通过涂胶粘合时的胶水量为5克/每平方米～15克/每平方米，或者当外层纸与内层纸通过淋膜复合时淋膜的厚度为0.007mm～0.018mm。通过涂胶粘合时胶水量决定外层纸与内层纸的连接强度，胶水过多则导致胶水溢出，浪费胶水量，胶水过少则导致连接强度不足，同理，通过淋膜复合时淋膜厚度决定外层纸与内层纸的连接强度，淋膜厚度过大则导致淋膜浪费，淋膜厚度过小则导致连接强度不足。
在上述的纸杯的加工工艺中，在步骤C中，所述圆辊为硬度45～95的橡胶辊，所述圆辊与凹辊对外层纸及内层纸的压力为40N～80N，使得外层纸一侧面局部平铺并粘接在内层纸侧面上，从而形成位于相邻空心凸起之间的连接部，该连接部的宽度为4mm～12mm。圆辊与凹辊对外层纸及内层纸的压力将影响外层纸与内层纸之间的连接强度，即压力过大则导致外层纸与内层纸之间的粘合剂被挤出而导致连接强度不足，该压力过小则容易使外层纸与内层纸之间出现空隙，导致连接强度不足，相对应的，粘结 面直观的反映出外层纸与内层纸的连接强度，空心凸起的高度直观的反映出隔热空腔的大小，同时粘接面的宽度越大则空心凸起的内腔空间越小，即隔热效果被降低，因此综合考虑上述因素，将粘接面宽度设置为4mm～12mm时外层纸与内层纸之间具有较高连接强度和较好的隔热效果。
在上述的纸杯的加工工艺中，在B步骤中辊压成的凸纹在外层纸上均匀分布，在步骤C和步骤D之间将外层纸(12)通过热压板压平，从而形成若干组凸纹，每组凸纹均呈扇形排列。先通过热压板将外层纸局部压平，从而若干组凸纹，然后在步骤D中将该若干组凸纹模切下来，一组凸纹对应一个杯片，而通过热压板压平的部分则形成杯片平整的边沿，用于卷口和包裹支撑翻边，杯片的直边沿压平用于卷绕成筒状后相粘接固连。
在上述的纸杯的加工工艺中，在B步骤中，凹辊与凸辊在外层纸上辊压出若干组间隔有序排列的凸纹，使外层纸位于相邻两组凸纹之间的部分平整，在步骤D中模切下来包含一组凸纹的扇形杯片，且使杯片的边沿位置平整。该结构的双层纸在每组凸纹之间已经预留平整的部分，所以模切出的扇形杯片具有平整的边沿，因此在卷绕成杯体之前无需压平。
与现有技术相比，本纸杯及其加工工艺具有以下优点：
1、由于手持杯体时按压在空心凸起外表面时，此时空心凸起的内腔起到隔绝热量传递的作用，使得热量不会传递至空心凸起外表面，从而具有较好的防烫效果。
2、由于杯体的端口边沿向外侧弯折形成双层纸结构的卷口，其中卷口的内层纸与外层纸是相贴合固连的，因此能够避免其中一层纸变形后导致另一层纸变形，使得内层纸与外层纸形成一个整体，具有较高的支撑强度。
3、由于本工艺先将辊压出凸纹的外层纸与内层纸固连，从而使外层纸与内层纸卷绕成筒状杯体之前具有较好的整体性，再将 具有更高连接质量和连接稳定性的双层纸卷绕成筒状的杯体，使得该杯体具有较高的支撑强度，因此能够将内层纸与外层纸的重量限制在100克/每平方米到170克/每平方米之间，以减少纸张用量，降低生产成本。
附图说明
图1是纸杯的结构剖视图。
图2是纸杯的加工工艺流程图。
图3是步骤B、C的简易流程图。
图4是杯片的结构示意图。
图5是实施例二中双层纸未模切时的结构示意图。
图6是实施例五中纸杯的加工工艺流程图。
图7是实施例六的杯面图案。
图中，1、杯体；11、内层纸；12、外层纸；121、空心凸起；122、连接部；2、杯片；3、卷口；4、杯底；41、支撑翻边；5、凸辊；6、凹辊；7、圆辊；8、喷淋头；9、双层纸。
具体实施方式
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。
如图1所示，一种纸杯，包括杯体1，杯体1包括内层纸11和外层纸12，内层纸11与外层纸12均为单层纸，外层纸12上具有若干向外凸出用于防烫的空心凸起121，外层纸12位于相邻两空心凸起121之间部分形成连接部122，连接部122的内侧面与内层纸11的外侧面相贴合固连，外层纸12的杯口边沿延伸至内层纸11的杯口边沿，且内层纸11的杯口外侧面与外层纸12的杯口内侧面相贴合固连，外层纸12与内层纸11的杯口边沿均向外弯折形成双层结构的卷口3，且卷口3的横截面呈环形，外 层纸12通过弯折形成有序排列的空心凸起121，而连接部122内侧面与内层纸11外侧面相贴合后相邻的两空心凸起121之间空气隔离，不会相互流动，手持杯体1时按压在空心凸起121外表面时，此时空心凸起121的内腔起到隔绝热量传递的作用，使得热量不会传递至空心凸起121外表面，从而具有较好的防烫效果，进一步的，由于手持杯体1时按压在空心凸起121上，空心凸起121则起到加强挺度的作用，对杯体1具有较好的支撑效果，从而提高杯体1的强度，在进一步，由于杯体1的下端由杯底4进行支撑，而上端杯口处呈环形，因此本杯体1的端口边沿向外侧弯折形成双层纸结构的卷口3，该卷口3也起到加强筋的作用，从而提高杯体1杯口边沿的强度，避免杯口边沿内陷导致杯体1变形，其中卷口3的内层纸11与外层纸12是相贴合固连的，使得内层纸11与外层纸12形成一个整体，具有较高的支撑强度。
具体来说，由于手持杯体1时杯体1为径向受力，因此连接部122呈环形，并环绕内层纸11设置，且若干连接部122沿杯体1的高度方向排列，即空心凸起121呈环形，每一空心凸起121均能够承受一定的径向受力，在结合沿杯体1高度方向排列设置，使得多根空心凸起121对杯体1具有较高的支撑强度，连接部122的宽度为8mm，连接部122与内层纸11具有一定的连接面积，该连接面积对外层纸12与内层纸11之间的连接强度以及杯体1的支撑强度起到加强。当然在实际加工过程中，连接部122也可以呈连续的条形，使得空心凸起121也呈条形，或者使得空心凸起121呈圆形或者多边形均具有较好的支撑效果，由于本杯体1上均布空心凸起121，且卷口3采用相固连的双层纸结构，使得杯体1具有较高的支撑强度，因此内层纸11与外层纸12的厚度可以减小，即能够将外层纸12与内层纸11的重量减小到130克/每平方米，起到节约纸张、环保并降低生产成本的作用。杯底4的外边沿向下弯折形成支撑翻边41，杯体1的下端边沿向内弯折， 且内层纸11的内侧面与支撑翻边41的内侧面相贴合固连，支撑翻边41的主要目的是对杯体1进行支撑，但是也能够提高杯底4的强度，而将本体的下端向内弯折后能够将支撑翻边41包裹，即对杯体1进行支撑的结构为内外两层外层纸12、内外两层内层纸11以及支撑翻边41的五层纸结构，具有较强的支撑能力。
如图2、图4、图5所示，本纸杯的加工工艺包括如下步骤：
A：备纸：取外层纸12并卷绕成筒，取内层纸11并卷绕成筒，其中外层纸12和内层纸11的重量均为130克/每平方米；
B：辊压：将外层纸12拉出并在外层纸12上辊压出若干凸纹；
C：复合：将辊压后的外层纸12一侧面与内层纸11侧面相贴合固连形成双层纸9，使得外层纸12的另一侧凸纹形成空心凸起121；
D：切片：将双层纸9展开并模切出具有两相对直边沿和两相对弧形边沿的扇形杯片2；
E：成型：将杯片2卷成筒状且直径由上至下逐渐变小的杯体1，然后将杯片2的两直边沿相贴合固连，再将双层纸结构的杯口边沿向外弯折形成横截面呈环形的卷口3；
F：定型：将杯体1的下端边沿向内弯折并通过热压粘附在杯底4的支撑翻边41内侧面上。
本工艺中将内层纸11与外层纸12的重量限制在130克/每平方米，以减少纸张用量，降低生产成本，而对于纸张用量减少产生的强度不足问题，则通过在外层纸12辊压出凸纹，然后在卷绕成筒状杯体1之前先将外层纸12与内层纸11固连在一起，从而形成具有较高支撑强度的空心凸起121，以提高杯体1的支撑强度，相比较传统工艺中先将外层纸12卷绕成筒状外杯体、内层纸11卷绕成筒状内杯体，然后将外杯体套在内杯体上粘接固连，本工艺先将辊压出凸纹的外层纸12与内层纸11固连，从而使外层纸12与内层纸11卷绕成筒状杯体1之前具有较好的整体性，且 铺开的外层纸12与铺开的内层纸11相固连能够使两者的连接质量更高，避免出现局部由于粘合力度不够等原因导致的空隙，而再将具有更高连接质量和连接稳定性的双层纸9卷绕成筒状的杯体1，使得该杯体1具有较高的支撑强度，其中杯片2卷绕后将两边沿相粘合，该粘合的接缝线沿杯体1轴向，当然也可以相对倾斜。进一步的，本工艺是将固连在一起的双层纸9结构进行弯折卷口3，该卷口3也起到加强筋的作用，从而提高杯体1杯口边沿的强度，避免杯口边沿内陷导致杯体1变形，其中卷口3的内层纸11与外层纸12是相贴合固连的，因此能够避免其中一层纸变形后导致另一层纸变形，使得内层纸11与外层纸12形成一个整体，具有较高的支撑强度，再进一补，由于内层纸11与外层纸12之间具有较高的连接质量，因此能够避免空心凸起121受力后出现内陷而与内层纸11接触，因此在手持杯体1时空心凸起121始终能够提供稳定的隔热空间，具有较好的防烫效果。
具体来说，结合图3所示，在步骤B中外层纸12从相啮合的凸辊5与凹辊6之间穿过，外层纸12在受到凸辊5与凹辊6的压力形变时，外层纸12的温度与湿度均决定了外层纸12形变的程度和稳定性，因此本实施例中凸辊5与凹辊6对外层纸12进行辊压时外层纸12的温度为85℃，外层纸12的含水量为6.25％，使得外层纸12辊压成的凸纹质量更高，辊压后外层纸12上的凸纹高度为0.7mm，其中凸纹高度影响步骤C中外层纸12与内层纸11固连后空心凸起121的高度，进而影响杯体1的支撑强度和防烫效果，辊压成型的外层纸12贴靠在凹辊6上并随凹辊6转动至凹辊6的另一侧进行步骤C。在步骤C中，外层纸12贴靠在凹辊6外侧面上，内层纸11贴靠在圆辊7外侧面上，外层纸12与内层纸11相靠拢并抵靠，其中在外层纸12与内层纸11相抵靠之前需要淋膜机进行淋膜，淋膜复合时需要通过淋膜机，将淋膜机的喷淋头8放置在凹辊6与圆辊7之间间隙的上方，因此外层纸12 与内层纸11的侧面在贴合抵靠之前均具有淋膜层，然后受力复合，使得外层纸12与内层纸11具有较高的连接强度和稳定性。在步骤C中，圆辊7与凹辊6使得外层纸12一侧面局部平铺并粘接在内层纸11侧面上，从而形成位于相邻两空心凸起121之间的连接部122，圆辊7与凹辊6对外层纸12及内层纸11的压力将影响外层纸12与内层纸11之间的连接强度，即压力过大则导致外层纸12与内层纸11之间的粘合剂被挤出而导致连接强度不足，该压力过小则容易使外层纸12与内层纸11之间出现空隙，导致连接强度不足，相对应的，粘结面直观的反映出外层纸12与内层纸11的连接强度，空心凸起121的高度直观的反映出隔热空腔的大小，同时粘接面的宽度越大则空心凸起121的内腔空间越小，即隔热效果被降低，因此综合考虑上述因素，本实施例中将连接部的宽度设置为8mm时外层纸12与内层纸11之间具有较高连接强度和较好的隔热效果。通过淋膜复合时淋膜厚度决定外层纸12与内层纸11的连接强度，淋膜厚度过大则导致淋膜浪费，淋膜厚度过小则导致连接强度不足，因此本实施例中外层纸12与内层纸11通过淋膜复合时淋膜的厚度为0.012mm。在B步骤中辊压成的凸纹在外层纸12上均匀分布，在步骤C和步骤D之间将外层纸12通过热压板压平，从而形成若干组凸纹，每组凸纹均呈扇形排列，先通过热压板将外层纸12局部压平，从而若干组凸纹，然后在步骤D中将该若干组凸纹模切下来，一组凸纹对应一个杯片2，而通过热压板压平的部分则形成杯片2平整的边沿。
实施例二：
该纸杯的加工工艺与实施例一基本相同，不同点在于如图5所示：在B步骤中，凹辊6与凸辊5在外层纸12上辊压出若干组间隔有序排列的凸纹，使外层纸12位于相邻两组凸纹之间的部分平整，在步骤D中模切下来包含一组凸纹的扇形杯片2，且使杯片2的边沿位置平整。
实施例三：
该纸杯的加工工艺与实施例一基本相同，不同点在于如下：
步骤A中，外层纸12和内层纸11的重量均为100克/每平方米；
步骤B中，凸辊5与凹辊6对外层纸12进行辊压时外层纸12的温度为80℃，外层纸12的的含水量为5.5％，辊压后外层纸12上的凸纹高度为0.3mm；
步骤C中，圆辊7与凹辊6对外层纸12及内层纸11的压力为40N，连接部的宽度为1mm，外层纸12与内层纸11通过淋膜复合时淋膜的厚度为0.007mm。
实施例四：
该纸杯的加工工艺与实施例一基本相同，不同点在于如下：
步骤A中，外层纸12和内层纸11的重量均为170克/每平方米；
步骤B中，凸辊5与凹辊6对外层纸12进行辊压时外层纸12的温度为75℃，外层纸12的湿度为含水量为7％，辊压后外层纸12上的凸纹高度为1mm；
步骤C中，圆辊7与凹辊6对外层纸12及内层纸11的压力为80N，连接部的宽度为12mm，外层纸12与内层纸11通过淋膜复合时淋膜的厚度为0.018mm。
以上实施例选取了三组工艺参数组合，当然其他的组合方式也是适用的。
实施例五：
该纸杯的加工工艺与实施例一基本相同，不同点在于如图6所示，在步骤C中，外层纸12贴靠在凹辊6外侧面上，内层纸11贴靠在圆辊7外侧面上，外层纸12与内层纸11相靠拢并抵靠，其中在外层纸12与内层纸11相抵靠之前需要涂胶机进行涂胶，具体的，涂胶头位于凹辊6与圆辊7之间间隙的上方并同时对外 层纸12及内层纸11的相对侧面进行涂胶，外层纸12与内层纸11的侧面在贴合抵靠之前均具有胶水层，然后受力粘合，使得外层纸12与内层纸11具有较高的连接强度和稳定性，进而对本体的支撑强度和防烫效果提供保证，通过涂胶粘合时胶水量决定外层纸12与内层纸11的连接强度，胶水过多则导致胶水溢出，浪费胶水量，胶水过少则导致连接强度不足，因此本实施例中外层纸12与内层纸11通过涂胶粘合时的胶水量为10克/每平方米，当然在实际生产过程中外层纸12与内层纸11通过涂胶粘合时的胶水量也可以为5克/每平方米或者15克/每平方米。
实施例六：
如图7所示，实施例六是一种具有特殊花纹的纸杯，其采用了实施例一中相同的结构和制备工艺，不同点在于杯面的花纹不是环形的，是由连接部122呈区块状，并由多个连接部122在纸杯的外侧面排列形成花纹图案，连接部122的宽度为1mm～12mm，本例中最佳为6mm。这种结构不仅能够实现防烫效果也具有较好的强度在采用比较薄的内层纸11和外层纸12的情况下。
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。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精神或者超越所附权利要求书所定义的范围。
尽管本文较多地使用了内层纸11、外层纸12、空心凸起121等术语，但并不排除使用其它术语的可能性。使用这些术语仅仅是为了更方便地描述和解释本发明的本质；把它们解释成任何一种附加的限制都是与本发明精神相违背的。

Claims (12)

  1. 一种纸杯，包括杯体(1)，所述杯体(1)包括内层纸(11)和外层纸(12)，其特征在于，所述内层纸(11)与外层纸(12)均为单层纸，所述外层纸(12)上具有若干向外凸出用于防烫的空心凸起(121)，所述外层纸(12)位于相邻两空心凸起(121)之间部分形成连接部(122)，所述连接部(122)的内侧面与内层纸(11)的外侧面相贴合固连，所述外层纸(12)的杯口边沿延伸至内层纸(11)的杯口边沿，且内层纸(11)的杯口外侧面与外层纸(12)的杯口内侧面相贴合固连，所述外层纸(12)与内层纸(11)的杯口边沿均向外弯折形成双层结构的卷口(3)，且卷口(3)的横截面呈环形，所述杯体(1)的底部固连有杯底(4)。
  2. 根据权利要求1所述的纸杯，其特征在于，所述连接部(122)呈环形或者连续的条形，且连接部(122)的宽度为4mm～12mm。
  3. 根据权利要求2所述的纸杯，其特征在于，所述外层纸(12)与内层纸(11)的重量均为100克/每平方米～170克/每平方米。
  4. 根据权利要求1所述的纸杯，其特征在于，所述杯底(4)的外边沿向下弯折形成支撑翻边(41)，所述杯体(1)的下端边沿向内弯折，且内层纸(11)的内侧面与支撑翻边(41)的内侧面相贴合固连。
  5. 根据权利要求1所述的纸杯，其特征在于，所述连接部(122)呈条形或者区块状，并由多个连接部(122)在纸杯的外侧面排列形成花纹图案。
  6. 根据权利要求5所述的纸杯，其特征在于，所述的连接部(122)的宽度为1mm～12mm。
  7. 一种纸杯的加工工艺，其特征在于，包括如下步骤：
    A：备纸：取外层纸(12)并卷绕成筒，取内层纸(11)并卷绕成筒，其中外层纸(12)和内层纸(11)的重量均为100克/每平方米～170克/每平方米；
    B：辊压：将外层纸(12)拉出并在外层纸(12)上辊压出若干凸纹；
    C：复合：将辊压后的外层纸(12)一侧面与内层纸(11)侧面相贴合固连形成双层纸(9)，使得外层纸(12)的另一侧凸纹形成空心凸起(121)；
    D：切片：将双层纸(9)展开并模切出具有两相对直边沿和两相对弧形边沿的扇形杯片(2)；
    E：成型：将杯片(2)卷成筒状且直径由上至下逐渐变小的杯体(1)，然后将杯片(2)的两直边沿相贴合固连，再将双层纸(9)结构的杯口边沿向外弯折形成横截面呈环形的卷口(3)；
    F：定型：将杯体(1)的下端边沿向内弯折并通过热压粘附在杯底(4)的支撑翻边(41)内侧面上。
  8. 根据权利要求7所述的纸杯的加工工艺，其特征在于，在B步骤中，外层纸(12)从相啮合的凸辊(5)与凹辊(6)之间穿过，在凸辊(5)与凹辊(6)对外层纸(12)进行辊压时外层纸(12)的温度小于90℃，外层纸(12)的含水量为5.5％～7％，辊压后外层纸(12)上的凸纹高度为0.3mm～1mm，辊压成型的外层纸(12)贴靠在凹辊(6)上并随凹辊(6)转动至凹辊(6)的另一侧进行步骤C。
  9. 根据权利要求8所述的纸杯的加工工艺，其特征在于，在步骤C中，外层纸(12)贴靠在凹辊(6)外侧面上，内层纸(11)贴靠在圆辊(7)外侧面上，外层纸(12)与内层纸(11)相靠拢并抵靠，其中在外层纸(12)与内层纸(11)相抵靠之前喷淋头(8)位于凹辊(6)与圆辊(7)之间间隙的上方并同时对外层纸(12)及内层纸(11)的相对侧面进行淋膜、或者涂胶头位于凹辊(6)与圆辊(7)之间间隙的上方并同时对外层纸(12)及内层纸(11)的相对侧面进行涂胶，当外层纸(12)与内层纸(11)通过涂胶粘合时的胶水量为5克/每平方米～15克/每平方米，当 外层纸(12)与内层纸(11)通过淋膜复合时淋膜的厚度为0.007mm～0.018mm。
  10. 根据权利要求9所述的纸杯的加工工艺，其特征在于，在步骤C中，所述圆辊(7)为硬度45～95的橡胶辊，所述圆辊(7)与凹辊(6)对外层纸(12)及内层纸(11)的压力为40N～80N，使得外层纸(12)一侧面局部平铺并粘接在内层纸(11)侧面上，从而形成位于相邻空心凸起(121)之间的连接部(122)，该连接部(122)的宽度为1mm～12mm。
  11. 根据权利要求7所述的纸杯的加工工艺，其特征在于，在B步骤中辊压成的凸纹在外层纸(12)上均匀分布，在步骤C和步骤D之间将外层纸(12)通过热压板压平，从而形成若干组凸纹，每组凸纹均呈扇形排列。
  12. 根据权利要求7所述的纸杯的加工工艺，其特征在于，在B步骤中，凹辊(6)与凸辊(5)在外层纸(12)上辊压出若干组间隔有序排列的凸纹，使外层纸(12)位于相邻两组凸纹之间的部分平整，在步骤D中模切下来包含一组凸纹的扇形杯片(2)，且使杯片(2)的边沿位置平整。
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