GB2055743A - A paper container - Google Patents

A paper container Download PDF

Info

Publication number
GB2055743A
GB2055743A GB8020619A GB8020619A GB2055743A GB 2055743 A GB2055743 A GB 2055743A GB 8020619 A GB8020619 A GB 8020619A GB 8020619 A GB8020619 A GB 8020619A GB 2055743 A GB2055743 A GB 2055743A
Authority
GB
United Kingdom
Prior art keywords
body portion
layer
skived
longitudinal end
longitudinal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB8020619A
Other versions
GB2055743B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toppan Inc
Original Assignee
Toppan Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Publication of GB2055743A publication Critical patent/GB2055743A/en
Application granted granted Critical
Publication of GB2055743B publication Critical patent/GB2055743B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
    • B29C66/5432—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles joining hollow covers and hollow bottoms to open ends of container bodies
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/545—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72327—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/12—Layered products comprising a layer of metal comprising metal 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
    • 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
    • B65D3/22—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
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/482—Drying adhesives, e.g. solvent based adhesives
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B29C65/485—Multi-component adhesives, i.e. chemically curing as a result of the mixing of said multi-components
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Cartons (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Making Paper Articles (AREA)

Abstract

A paper container comprises a hollow body portion with a thermoplastic synthetic resin layer as the innermost layer thereof, one longitudinal end of the material blank from which it is made having been skived to substantially half its thickness for a predetermined width, a longitudinal groove formed substantially at the centre of the skived portion, and the skived portion having been folded about the groove and adhered to itself; the body portion being formed by adhering both longitudinal ends of the blank together in overlapping relation with the folded longitudinal end inside the other longitudinal end. <IMAGE>

Description

SPECIFICATION A paper container The present invention relates to a paper container.
In a paper container for soft drinks, it has been conventionally proposed to fold an end of the paper which is exposed to the inside of the container or to coat the end face with a coating material such as a plastics material tape so as to prevent exposure of the end face of the paper to the inside of the container. However, both methods have proven to be defective. In the former method, since the element as a whole must be folded, folding is difficult. Cracks tend to form, resulting in leakage of the contents or influx of the outside air. In the latter method, the adhered tape may be easily removed.
Further, for applying this tape, an additionai procedure is required, resulting in an increase in cost and complexity of manufacture.
In a conventional paper container, the folding of the body element end face which is exposed inside the container does not present.many problems since the shape of the container is square and the folded portion is almost straight. However, with a paper container having a cylindrical or inverted truncated conical body portion, is has been necessary to heat and melt the thermoplastic synthetic resin at the outer surface of the body portion with hot air for improving the adhesion of the body-adhering portions. This pre-heating sometimes brings the folded portion of the skived portion of the body element back to its original state. In order to overcome or at least mitigate these defects, the present invention has been proposed.
According to the first aspect of the present invention, there is provided a paper container which comprises a hollow body portion having a side wall element with a thermoplastic synthetic resin layer as the innermost layer thereof, one longitudinal end of the side wall element having been skived to substantially half its thickness for a predetermined width, a longitudinal groove formed substantially at the centre of the skived portion, the skived portion having been folded about the groove and adhered to itself, a body portion being formed by adhering both longitudinal ends of the element together while placing the folded longitudinal end inside the other longitudinal end, and a lid portion and a bottom portion of the same or similar material as that of the body element matingly attached, respectively, to the open top and bottom ends of the body portion.
According to the second aspect of the present invention there is provided a method of making a paper container comprising a hollow body portion having a side wall element with a thermoplastic synthetic resin layer as the innermost layer thereof, which method comprises skiving one longitudinal end of the side wall element to substantially half its thickness for a predetermined width, forming a longitudinal groove substantially as the centre of the skived portion, folding the skived portion about the groove and adhering it to ftself,-forming the body portion by adhering both longitudinal ends of the element together while placing the folded longitudinal end inside the other longitudinal end and matingly attaching a lid portion and a bottom portion of the same or similar material as that of the body element, respectively, to the open top and bottom of the body portion.
The container generally has a body portion which is cylindrical (especiaily circular in cross-section) or is a truncated conic.
The body element of the container normally has a layered construction consisting of, from the outside; a thermoplastic synthetic resin layer, a paper layer, an adhesive layer, a metal layer, a heat-resistant adhesive layer and a thermoplastic synthetic resin layer. A lid portion and a bottom portion of the same material or similar are adhered to the top and bottom openings of the body portion.
For a better understanding of the invention and to show how the same may be put into effect, reference will now be made, by way of example, to the accompanying drawings, in which Figure 1 shows a perspective view of a paper container in accordance with the present invention, Figures 2(1), 2 (11) and 2 FIJI) show partially sectional views illustrating the manufacturing procedure for the end face of the body of a container in accordance with the present invention, Figure 3 shows a transverse sectional view of a container in accordance with the present invention, Figure 4 shows an enlarged view of the portion A of Figure 3, and Figure 5 shows a vertical sectional view of a container in accordance with the present invention.
Referring now to Figure 1 of the drawings, a paper container in accordance with the present invention comprises a cylindrical body portion 1, a bottom portion 3 at the lower end and a downwardly recessed lid portion 2 with an opening means 6 which, in turn, comprises a hole 5 and a seal 4. More particularly, as seen from Figure 2, one end of a body element (B) made of paper (b) is skived to substantially half its thickness over a predetermined width so as to skive the paper (b) to form a skived portion (C). A longitudinal groove (D) is formed at the centre of the skived portion (C). A heat-resistant glue such as an adhesive (f) (for example an emulsion of vinyl acetate resin or the like) is applied to the skived portion (C) which includes the groove (D), and the heat-resistant glue is irradiated with infrared rays to evaporate water contained therein.The skived portion is folded so that the end face of the skived paper (b) and the end face of the unskived portion of the element (B) contact each other. The end face of the element is thus coated with a water-proof and oil-resistant layer (E) and the element (B) is substantially uniform in thickness.
The body element whose one end is covered with the folded skived portion is rolled over a forming mandrel (not shown) so as to form a body portion 1 in such a manner that the coated end of the body element is inside the container (see Figures 2 to 4). A downwardly recessed lid 2 with the opening means comprising a hole 5 and a seal 4 is attached to the open upper end, and a bottom 3 is attached to the open lower end of the body portion 1. The element for the body portion, the lid and the bottom of the container in accordance with the present invention preferably comprises, from the outside: a thermoplastic synthetic resin layer, a paper layer, an adhesive layer, a metal layer, a heat-resistant adhesive layer and a thermoplastic synthetic resin layer.
For example, as shown in Figure 4, the layer construction is suitably, from the outside: a polyethylene layer (a), a paper layer (b), a polyethylene layer (c), an aluminium layer (d), a urethane-based two liquid type adhesive layer (d'), and a polyethylene layer (e); or a polyethylene layer (a), a paper layer (b), an acryl copolymeric bridging type heat-resistant adhesive emulsion layer (c), an aluminium layer (d), a urethene-based two liquid type adhesive layer (d'), and a polyethylene layer (e).
By utilisation of the present invention, it is possiblue to obtain the practical advantages described below: i) The end portion of the body element is folded after it has been skived to substantially half its thickness. This, therefore, does not present formation defects due to excessive thickness as compared with conventional containers in which the entire thickness of the end portion is folded or plastics material tape is applied over the end portion. This results in stability and precision in formation, as well as improved water-tightness and airtightness.
ii) The skived portion at one end of the body portion is folded after an adhesive is applied thereto or is otherwise adhered to itself. Thus, the folded portion does not return to its original state underthe great external force exerted when it is adhered to the other end and when the body portion is of a cylindrical or inverted truncated conical shape.
iii) An adhesive layer, for example a layer of urethane-based two liquid type adhesive, is applied between the innermost thermoplastic synthetic resin layer and the metal layer of the body element. Thus, the container is suitable for its intended contents and the adhesion is improved. Another heat-resistant adhesive layer of polyethylene or acryl copolymeric bringing type emulsion is laminated or coated between the paper layer and the metal layer so that the adhesion is further improved and no separation of the adhered part due to the heat generated in formation process is caused.
iv) The end face of the paper layer at the adhering portion of the body element is coated with a synthetic resin such as the polyethylene layer at the inner surface of the container. A metal foil layer such as aluminium is disposed at its inner side.
Thus, the waterproof and gas-barrier characteristics are improved.
v) When the body portion is cylindrical (straight), this container can be used in already existing automatic vending machines in which inverted truncated conical (reversely tapered) containers cannot be used. Thus, this container can be used in place of metal cans.

Claims (11)

1. A paper container which comprises hollow body portion having a side wall element with a thermoplastic synthetic resin layer as the innermost layerthereof, one longitudinal end of the sidewall element having been skived to substantially half its thickness for a predetermined width, a longitudinal groove formed substantially at the centre of the skived portion, the skived portion having been folded a bout the groove and adhered to itself, a body portion being formed by adhering both longitudinal ends of the element together while placing the folded longitudinal end inside the other longitudinal end, and a lid portion and a bottom portion of the same or similar material as that of the body element matingly attached, respectively, to the open top and bottom ends of the body portion.
2. A container according to Claim 1, wherein the skived portion is adhered to itself about the groove with adhesive.
3. A container according to Claim 1 or 2, wherein the body element has a layer construction comprising, from the outside: a thermoplastic synthetic resin layer, a paper layer, an adhesive layer, a metal layer, a heat-resistant adhesive layer and a thermoplastic synthetic resin layer.
4. A container according to Claim 1,2 or 3, wherein the body portion is cylindrical.
5. A container according to Claim 4, wherein the body portion is substantially circular in crosssection.
6. A container according to Claim 5, wherein the body portion is substantially square in cross-section.
7. A container according to Claim 1,2 or 3, wherein the body portion has an inverted truncated conical shape.
8. A paper container substantially as hereinbefore described with reference to, and as shown in, the accompanying drawings.
9. A method of making a paper container comprising a hollow body portion having a side wall element with a thermosplastic synthetic resin layer as the innermost layer thereof, which method comprises skiving one longitudinal end of the side wall element to substantially half its thickness for a predetermined width, forming a longitudinal groove substantially at the centre of the skived portion, folding the skived portion about the groove and adhering it to itself, forming the body portion by adhering both longitudinal ends of the element together while placing the folded longitudinal end inside the other longitudinal end and matingly attached a lid portion and a bottom portion of the same or similar material as that of the body element, respectively, to the open top and bottom of the body portion.
10. A method of making a paper container, substantially as hereinbefore described with reference to the accompanying drawings.
11. Any novel feature or combination of features described herein.
GB8020619A 1979-06-26 1980-06-24 Paper container Expired GB2055743B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1979087177U JPS566787U (en) 1979-06-26 1979-06-26

Publications (2)

Publication Number Publication Date
GB2055743A true GB2055743A (en) 1981-03-11
GB2055743B GB2055743B (en) 1983-07-20

Family

ID=13907701

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8020619A Expired GB2055743B (en) 1979-06-26 1980-06-24 Paper container

Country Status (5)

Country Link
JP (1) JPS566787U (en)
FR (1) FR2459724A1 (en)
GB (1) GB2055743B (en)
IT (2) IT1145268B (en)
NL (1) NL8003701A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124997A (en) * 1982-06-30 1984-02-29 Toyo Seikan Kaisha Ltd Sealed laminated vessels
WO2005120964A1 (en) * 2004-06-10 2005-12-22 Elopak Systems Ag Container made of laminate material, blank and method
WO2010135613A1 (en) 2009-05-21 2010-11-25 Meadwestvaco Corporation Hermetically sealed paperboard containers with enhanced barrier performance
WO2011146087A1 (en) 2010-05-21 2011-11-24 Meadwestvaco Corporation Hermetically-sealed paperboard containers with improved barrier performance
WO2012064478A1 (en) 2010-11-08 2012-05-18 Meadwestvaco Corporation Double wall barrier paperboard containers
US10589890B2 (en) 2015-12-17 2020-03-17 Ptm Packaging Tools Machinery Pte. Ltd. Container and method for producing a container
US10759208B2 (en) 2015-08-14 2020-09-01 Sig Technology Ag Sheetlike composite, especially for dimensionally stable containers, with an outer thermoplastic sealing layer applied over part of the surface
EP3741696A1 (en) * 2019-05-24 2020-11-25 Michael Hörauf Maschinenfabrik GmbH u. Co. KG Paper or paper-like material container and method
US11065824B2 (en) 2016-08-31 2021-07-20 Sig Technology Ag Device and method for producing packaging precursors by means of a heating device acting on the edge area of the packaging precursor

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3372464D1 (en) * 1982-12-03 1987-08-20 Ajinomoto Kk Plastics material can
JPS6013637A (en) * 1983-07-05 1985-01-24 東洋製罐株式会社 Sealed vessel
US4951841A (en) * 1984-12-28 1990-08-28 Colgate-Palmolive Company Dispensing container made from an ethylene vinyl alcohol containing laminated material and the material therefor
IN164974B (en) * 1984-12-28 1989-07-15 Colgate Palmolive Co
FR2575410B1 (en) * 1985-12-23 1990-04-20 Colgate Palmolive Co SUBSTRATE CONTAINING POLYPROPYLENE AND CONTAINER COMPRISING APPLICATION
DE102015010404A1 (en) 2015-08-14 2017-03-09 Sig Technology Ag Flat composite, in particular for dimensionally stable containers, with external thermoplastic sealing layer applied over part of the surface, in particular for sealing a longitudinal seam

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB879637A (en) * 1959-01-08 1961-10-11 Hermorion Ltd Improvements in and relating to a longitudinally seamed tube, and packages made therefrom
DE1256527B (en) * 1964-04-30 1967-12-14 Robert Georges Eugene Durat Method for producing a jacket seam on a cardboard container with a heat-sealable inner coating

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124997A (en) * 1982-06-30 1984-02-29 Toyo Seikan Kaisha Ltd Sealed laminated vessels
WO2005120964A1 (en) * 2004-06-10 2005-12-22 Elopak Systems Ag Container made of laminate material, blank and method
AU2010249435B2 (en) * 2009-05-21 2013-04-04 Meadwestvaco Corporation Hermetically sealed paperboard containers with enhanced barrier performance
US8448844B2 (en) * 2009-05-21 2013-05-28 Meadwestvaco Corporation Hermetically sealed paperboard container with enhanced barrier performance
US8113416B2 (en) 2009-05-21 2012-02-14 Meadwestvaco Corporation Hermetically sealed paperboard container with enhanced barrier performance
CN102438909A (en) * 2009-05-21 2012-05-02 米德韦斯瓦科公司 Hermetically sealed paperboard containers with enhanced barrier performance
US20120104078A1 (en) * 2009-05-21 2012-05-03 Zhiquan Yan Hermetically Sealed Paperboard Container with Enhanced Barrier Performance
CN102438909B (en) * 2009-05-21 2015-03-25 米德韦斯瓦科公司 Hermetically sealed paperboard containers with enhanced barrier performance
WO2010135613A1 (en) 2009-05-21 2010-11-25 Meadwestvaco Corporation Hermetically sealed paperboard containers with enhanced barrier performance
EP2604539A1 (en) 2009-05-21 2013-06-19 MeadWestvaco Corporation Hermetically sealed paperboard containers with enhanced barrier performance
WO2011146087A1 (en) 2010-05-21 2011-11-24 Meadwestvaco Corporation Hermetically-sealed paperboard containers with improved barrier performance
WO2012064478A1 (en) 2010-11-08 2012-05-18 Meadwestvaco Corporation Double wall barrier paperboard containers
US10759208B2 (en) 2015-08-14 2020-09-01 Sig Technology Ag Sheetlike composite, especially for dimensionally stable containers, with an outer thermoplastic sealing layer applied over part of the surface
US10589890B2 (en) 2015-12-17 2020-03-17 Ptm Packaging Tools Machinery Pte. Ltd. Container and method for producing a container
US11065824B2 (en) 2016-08-31 2021-07-20 Sig Technology Ag Device and method for producing packaging precursors by means of a heating device acting on the edge area of the packaging precursor
EP3741696A1 (en) * 2019-05-24 2020-11-25 Michael Hörauf Maschinenfabrik GmbH u. Co. KG Paper or paper-like material container and method

Also Published As

Publication number Publication date
IT1145268B (en) 1986-11-05
IT8049078A0 (en) 1980-06-26
NL8003701A (en) 1980-12-30
JPS566787U (en) 1981-01-21
GB2055743B (en) 1983-07-20
IT8035865V0 (en) 1980-06-26
FR2459724A1 (en) 1981-01-16
FR2459724B1 (en) 1984-11-23

Similar Documents

Publication Publication Date Title
GB2055743A (en) A paper container
US3182882A (en) Skived brim cup and blank therefor
US5566529A (en) Process for manufacturing a tubular package, and package obtained by the implementation of the process
US4209126A (en) Patch top closure member including a monoaxially oriented film layer
CA2322667C (en) Sealant layer for container lid
US4895135A (en) Self-heating container
US3547012A (en) Two-piece plastic container and method of making same
US4531930A (en) Process for the preparation of a paper container equipped with a reinforcing ring, and a reinforcing ring for such process
US2413449A (en) Method of making sealed fiber containers and closures therefor
US4196841A (en) Laminate and container therefrom
GB2024334A (en) Compartmented aerosol container
US3242829A (en) Container
US3194479A (en) Containers and container closures
US2106738A (en) Paper and analogous material container
US2842301A (en) Container
US3985284A (en) Material in the form of a web or of sheets for the manufacture of packing containers or parts thereof
US4978406A (en) Process for producing tube
US2218246A (en) Window container stock and container made therefrom
US3454208A (en) Two-piece plastic container
US2230987A (en) Nonmetallic and partly metallic preserving cans
US2467016A (en) Fibrous container for oil and other liquids
US4190188A (en) Container and cone for same
US4190189A (en) Closure member for a container
GB1578260A (en) Container
US5176308A (en) Closure for gable top container

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920624