EP2443043A1 - Method for manufacturing a threaded paper cylinder and paper cylinder manufactured with this method - Google Patents

Method for manufacturing a threaded paper cylinder and paper cylinder manufactured with this method

Info

Publication number
EP2443043A1
EP2443043A1 EP10728410A EP10728410A EP2443043A1 EP 2443043 A1 EP2443043 A1 EP 2443043A1 EP 10728410 A EP10728410 A EP 10728410A EP 10728410 A EP10728410 A EP 10728410A EP 2443043 A1 EP2443043 A1 EP 2443043A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
thread
face
paper
internal
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.)
Withdrawn
Application number
EP10728410A
Other languages
German (de)
French (fr)
Inventor
Jan Berend Tabak
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.)
Inmaco BV
Original Assignee
Inmaco BV
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 Inmaco BV filed Critical Inmaco BV
Publication of EP2443043A1 publication Critical patent/EP2443043A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0492—Threaded or like caps or cap-like covers secured by rotation formed by several elements connected together
    • 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
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/0202—Removable lids or covers without integral tamper element
    • B65D43/0225—Removable lids or covers without integral tamper element secured by rotation
    • B65D43/0231—Removable lids or covers without integral tamper element secured by rotation only on the outside, or a part turned to the outside, of the mouth of the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/00074—Shape of the outer periphery curved
    • B65D2543/00092—Shape of the outer periphery curved circular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00231—Overall construction of the lid made of several pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00231—Overall construction of the lid made of several pieces
    • B65D2543/0024—Overall construction of the lid made of several pieces two pieces, one forming at least the whole skirt, the other forming at least the whole upper part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00527—NO contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container

Definitions

  • the invention relates to a method for manufacturing a cylinder essentially constituted by paper material, the cylinder comprising a thread.
  • the invention relates also to a cylinder manufactured with the method and to a cap comprising such a cylinder.
  • Screw caps such as for closing off jars for jam, jars for preserved food and the like are known and widely used. Such caps are mostly manufactured from plastics or from metal.
  • Paper caps are often used with packages such as cups for icecreams, soup cups, cups for instant noodles, containers for candy, potato chip containers, etc. Paper has a number of advantages over plastic or metal. It is a lesser load to the environment, is better degradable or reusable and the material is to a large extent recyclable. In addition it is considerably cheaper and it is more simple to process. However for screw caps paper has hardly been used up till now. An important cause of this is that paper screw caps are considered to have a too low strength and therefore to possess too little holding strength.
  • composite forms of paper are meant such as paper board, cardboard and the like, as well as paper which comprises one or more layers of other material, such as a plastic foil or an aluminium foil.
  • the invention thus comprises a method for manufacturing of a cylinder composed essentially from paper material with an internal cylinder face and an external cylinder face, the cylin- der comprising a continuous or an interrupted thread that protrudes from either the internal cylinder face or from the external cylinder face.
  • the invention further comprises a cylinder manufactured with this method.
  • the thread can be applied by treating and deforming a paper cylinder, such as using a rolling tool.
  • the desired strength can for instance be reached by a proper choice of the kind of paper and the thickness of the cylinder.
  • the strength of the thread can be increased considerably by applying a flat layer of material such that it adheres to at least a part of the other of the internal cylinder face and the external cylinder face.
  • a layer is glued. By doing so the formed thread will be retained when it is put under load and will therefore withstand larger loads. If it concerns an internal thread, the flat layer is on the outside of the cylinder and with an external thread the flat layer is on the inside of the cylinder.
  • the thread can be a continuous thread or can be interrupted and thus be formed from parts of an imaginary continuous thread.
  • the flat layer is formed by a second cylinder which fits to the cylinder in which the thread has been applied and these cylinders have for instance been glued together.
  • This layer can be a paper layer but it is also possible that the layer is a foil, for example a plastic foil.
  • a threaded cylinder according to the invention is used in a screw cap. With the manufacturing of paper cups a starting point is usually a ring shaped paper cylinder, and a flat round paper disc. These are then joined together to a paper cap in a way that is generally known to the average person skilled in the art.
  • a paper screw cap which in the preferred embodiment also has a smooth external side because of the flat layer which has been glued onto it. Such a screw cap will have sufficient strength for many applications.
  • a starting point is a flat paper cylinder, with an internal cylinder face and an external cylinder face, the cylinder having been obtained with a method that in itself is known. Subsequently a continuous or an interrupted thread is being applied, which protrudes from one of the internal cylinder face and the external cylinder face starting from a flat cylinder from mainly paper material.
  • This applying of a thread comprises the following step: - weakening the cylinder at a position which marks the contour of the thread.
  • the weakening can take place for instance using a shaped rolling tool and rolling the cylinder under pressure and in such a way pressing the thread into the cylinder.
  • the thread can also be pressed into the cylinder with a pressing tool, wherein the thread is pressed into the cylinder between a suitable die and a mould.
  • the thread can also be applied by milling away a part of the surface of the cylinder, and applying an axial load to make the marked thread protrude outside the cylinder face.
  • a layer of material is applied to adhere to the other face than the face from which the thread protrudes.
  • - fig. 1 is an elevation of a cap according to the in- vention
  • - fig. 2 is a cross section to a cap according to the invention, manufactured according to a first embodiment of a method according to the invention
  • fig. 3a and 3b show details of the embodiment of fig. 2;
  • - fig. 4 is a cross section through a cap according to the invention, manufactured according to a second embodiment of a method according to the invention
  • Fig. 1 shows an elevation of an embodiment of a cap 1 according to the invention.
  • the cap 1 comprises a cylinder 2 and an upper surface 3, both from cardboard.
  • Cylinder 2 comprises parts 4 of a non-continuous thread.
  • Cylinder 2 and upper surface 3 are attached to each other using a method that is known in it- self, and which comprises for instance deep drawing of a disc, placing the disc in a ring or cylinder, applying glue and curling the edges of ring and disc. Such curled edges are visible in figs. 2 and 4. It is pointed out that although a ring or cylinder 2 comprises a curled-up edge, this ring is a cylinder com- prising a thread according to the invention. This irrespective of the method used for joining upper surface 3 and cylinder 2 to screw cap 1.
  • fig. 3a shows the end of a cross section of a cardboard cylinder 5.
  • a weakening is milled away in the form of a groove 6.
  • This groove 6 then extends over the area of the cylinder 5 where an internal thread is desired.
  • the remaining material at groove 6 will protrude inwardly and form a thread 4, see fig. 3b.
  • groove 6 closes and forms an essentially flat outer wall of cylinder 5.
  • a layer 7 is glued.
  • This layer 7 can also be formed by a cylinder 7 which fits without play to cylinder 5. After hardening of the glue a useful cylinder 2 comprising a thread 4 is obtained, which is suitable for further processing to cap 1.
  • fig. 5 also shows the end of a cross section of a cardboard cylinder 5.
  • a weakening is rolled with a suitable rolling tool in the shape of a cavity 8.
  • a rolling tool is for example formed by two profiled rolls between which the cylinder is being rolled under pressure, wherein the profile of the rolls corresponds to the desired profile of the thread. This cavity then translates into a thread 4 at the inside of cylinder 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Making Paper Articles (AREA)

Abstract

The invention relates to method for manufacturing a threaded cylinder (2) composed of essentially paper material with an internal cylinder face and an external cylinder face, the cylinder comprising a continuous or interrupted thread (4), which protrudes out from one of the internal cylinder face and the external cylinder face and that against the other of the internal cylinder face and the external cylinder face a flat layer of material (7) is applied to adhered over at least part of the face. The invention further relates to a cylinder manufactured with this method and a screw cap (1) comprising such a cylinder.

Description

Method for manufacturing a paper cylinder comprising a thread and paper cylinder manufactured with the method
The invention relates to a method for manufacturing a cylinder essentially constituted by paper material, the cylinder comprising a thread. The invention relates also to a cylinder manufactured with the method and to a cap comprising such a cylinder.
Screw caps, such as for closing off jars for jam, jars for preserved food and the like are known and widely used. Such caps are mostly manufactured from plastics or from metal.
Paper caps are often used with packages such as cups for icecreams, soup cups, cups for instant noodles, containers for candy, potato chip containers, etc. Paper has a number of advantages over plastic or metal. It is a lesser load to the environment, is better degradable or reusable and the material is to a large extent recyclable. In addition it is considerably cheaper and it is more simple to process. However for screw caps paper has hardly been used up till now. An important cause of this is that paper screw caps are considered to have a too low strength and therefore to possess too little holding strength. When paper is mentioned here, also composite forms of paper are meant such as paper board, cardboard and the like, as well as paper which comprises one or more layers of other material, such as a plastic foil or an aluminium foil.
It is a purpose of the invention to provide a method for manufacturing a paper cylinder with a thread which has a satisfactory strength and thus sufficient holding strength. This purpose is reached by a method according to claim 1.
The invention thus comprises a method for manufacturing of a cylinder composed essentially from paper material with an internal cylinder face and an external cylinder face, the cylin- der comprising a continuous or an interrupted thread that protrudes from either the internal cylinder face or from the external cylinder face. The invention further comprises a cylinder manufactured with this method. The thread can be applied by treating and deforming a paper cylinder, such as using a rolling tool. The desired strength can for instance be reached by a proper choice of the kind of paper and the thickness of the cylinder. The strength of the thread can be increased considerably by applying a flat layer of material such that it adheres to at least a part of the other of the internal cylinder face and the external cylinder face. At a threaded paper cylinder accord- ing to the invention in this preferred embodiment to the other side containing the thread, a layer is glued. By doing so the formed thread will be retained when it is put under load and will therefore withstand larger loads. If it concerns an internal thread, the flat layer is on the outside of the cylinder and with an external thread the flat layer is on the inside of the cylinder. The thread can be a continuous thread or can be interrupted and thus be formed from parts of an imaginary continuous thread.
In a further preferred embodiment of the invention the flat layer is formed by a second cylinder which fits to the cylinder in which the thread has been applied and these cylinders have for instance been glued together. This layer can be a paper layer but it is also possible that the layer is a foil, for example a plastic foil. In a preferred embodiment a threaded cylinder according to the invention is used in a screw cap. With the manufacturing of paper cups a starting point is usually a ring shaped paper cylinder, and a flat round paper disc. These are then joined together to a paper cap in a way that is generally known to the average person skilled in the art. By now choosing as the ring shaped paper cylinder a paper cylinder according to the invention comprising a thread, in this case an internal thread, a paper screw cap is obtained which in the preferred embodiment also has a smooth external side because of the flat layer which has been glued onto it. Such a screw cap will have sufficient strength for many applications.
In a method according to the invention a starting point is a flat paper cylinder, with an internal cylinder face and an external cylinder face, the cylinder having been obtained with a method that in itself is known. Subsequently a continuous or an interrupted thread is being applied, which protrudes from one of the internal cylinder face and the external cylinder face starting from a flat cylinder from mainly paper material.
This applying of a thread comprises the following step: - weakening the cylinder at a position which marks the contour of the thread. The weakening can take place for instance using a shaped rolling tool and rolling the cylinder under pressure and in such a way pressing the thread into the cylinder. Apart from the rolling tool the thread can also be pressed into the cylinder with a pressing tool, wherein the thread is pressed into the cylinder between a suitable die and a mould. The thread can also be applied by milling away a part of the surface of the cylinder, and applying an axial load to make the marked thread protrude outside the cylinder face. In a further step of the method according to the invention in which the thread is further reinforced, subsequently a layer of material is applied to adhere to the other face than the face from which the thread protrudes.
The invention will now further be explained by the de- scription of some embodiments of the methods according to the invention and the resulting threaded cylinders according to the invention, as well as a crew cap according to the invention, with reference to the drawing, in which:
- fig. 1 is an elevation of a cap according to the in- vention;
- fig. 2 is a cross section to a cap according to the invention, manufactured according to a first embodiment of a method according to the invention;
- fig. 3a and 3b show details of the embodiment of fig. 2;
- fig. 4 is a cross section through a cap according to the invention, manufactured according to a second embodiment of a method according to the invention;
- fig. 5 shows details of the embodiment of fig. 4; Fig. 1 shows an elevation of an embodiment of a cap 1 according to the invention. The cap 1 comprises a cylinder 2 and an upper surface 3, both from cardboard. Cylinder 2 comprises parts 4 of a non-continuous thread. Cylinder 2 and upper surface 3 are attached to each other using a method that is known in it- self, and which comprises for instance deep drawing of a disc, placing the disc in a ring or cylinder, applying glue and curling the edges of ring and disc. Such curled edges are visible in figs. 2 and 4. It is pointed out that although a ring or cylinder 2 comprises a curled-up edge, this ring is a cylinder com- prising a thread according to the invention. This irrespective of the method used for joining upper surface 3 and cylinder 2 to screw cap 1.
Now some examples of methods according to the invention for manufacturing a continuous or an interrupted thread or part of a thread in a cylinder of e.g. cardboard will be reviewed. In both cases the un-worked cylinder can be produced using a method that is known as such, such as winding one or more strips of cardboard around a mandrel of a spiral winding machine and glue these together. In such a way mostly an endless cylinder is manufactured, which is then cut into cylinders of a desired length with a cutting tool .
As a first example of an embodiment of a method according to the invention for manufacturing a cylinder according to the invention from paper material and comprising a thread, fig. 3a shows the end of a cross section of a cardboard cylinder 5. In cylinder 5 at the location where an internal thread or part of a thread is intended, at the outside a weakening is milled away in the form of a groove 6. This groove 6 then extends over the area of the cylinder 5 where an internal thread is desired. By now subjecting cylinder 5 to an axial compressive load, the remaining material at groove 6 will protrude inwardly and form a thread 4, see fig. 3b. At the same time groove 6 closes and forms an essentially flat outer wall of cylinder 5. To reinforce the thread 4, at the external face of cylinder 5 a layer 7 is glued. This layer 7 can also be formed by a cylinder 7 which fits without play to cylinder 5. After hardening of the glue a useful cylinder 2 comprising a thread 4 is obtained, which is suitable for further processing to cap 1.
As a second example of an embodiment of a method ac- cording to the invention for manufacturing a cylinder according to the invention from paper material and comprising a thread, fig. 5 also shows the end of a cross section of a cardboard cylinder 5. From the outside at the location where an internal thread or a part of an internal thread is desired in cylinder 5 a weakening is rolled with a suitable rolling tool in the shape of a cavity 8. Such a rolling tool is for example formed by two profiled rolls between which the cylinder is being rolled under pressure, wherein the profile of the rolls corresponds to the desired profile of the thread. This cavity then translates into a thread 4 at the inside of cylinder 5. It is also possible to press the thread in the cylinder using a suitable die and mould, Just as in the previous embodiment for reinforcing the thread 4 at the outside of cylinder 5 a layer of material is now glued. This layer of material 7 can be also formed by a cylinder 7 which fits without play to cylinder 5. After hardening of the glue a usable cylinder 2 comprising a thread 4 is thus formed which is suitable for further processing to cap 1.
Although above only some examples of embodiments of the invention have been shown and reviewed, the invention is not limited to these, but comprises all forms and variants which fall under the claims belonging to this invention.

Claims

1. Method for manufacturing a threaded cylinder (2) comprising essentially paper material, the method comprising the following steps: a) starting from a flat cylinder (5) from essentially paper material, with an internal cylinder face and an external cylinder face, applying therein a continuous or interrupted thread (4), which protrudes out from one of the internal cylinder face and the external cylinder face, b) applying a layer of material (7) to adhere to the other of the internal cylinder face and the internal cylinder face, characterized in that step a) comprises the following step: al) applying a weakening (6, 8) in the cylinder (5) , which marks the contour of the thread (4) .
2. Method according to claim 1, characterized in that step al) comprises rolling of the thread (4) in the cylinder (5) using a formed rolling tool.
3. Method according to claim 1, characterized in that step al) comprises pressing into the cylinder of the thread (4) using a die and a mould.
4. Method according to claim 1, characterized in that step al) comprises: al.l) milling away of a part (6) of the surface of the cylinder, and al.2) applying to the cylinder (5) of an axial load to make the marled thread (4) protrude outwards.
5. Cylinder of essential paper material, manufactured with a method according to one of the claims 1-4.
6. Screw cap (1) for a jar such as jam jar, comprising a cylinder (2) or a cylindrical part (2) according to claim 5.
EP10728410A 2009-06-15 2010-06-15 Method for manufacturing a threaded paper cylinder and paper cylinder manufactured with this method Withdrawn EP2443043A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2003021A NL2003021C2 (en) 2009-06-15 2009-06-15 METHOD FOR MANUFACTURING A PAPER CYLINDER FITTED WITH THREAD AND PAPER CYLINDER MANUFACTURED
PCT/NL2010/050368 WO2010147463A1 (en) 2009-06-15 2010-06-15 Method for manufacturing a threaded paper cylinder and paper cylinder manufactured with this method

Publications (1)

Publication Number Publication Date
EP2443043A1 true EP2443043A1 (en) 2012-04-25

Family

ID=41508343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10728410A Withdrawn EP2443043A1 (en) 2009-06-15 2010-06-15 Method for manufacturing a threaded paper cylinder and paper cylinder manufactured with this method

Country Status (3)

Country Link
EP (1) EP2443043A1 (en)
NL (1) NL2003021C2 (en)
WO (1) WO2010147463A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115790285A (en) * 2022-10-27 2023-03-14 刘绍武 Method for improving effect distribution uniformity of paper inner barrel, product and mould

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4242127A1 (en) 2022-03-09 2023-09-13 Seda International Packaging Group Spa Threaded paper lid for container
CN115139571A (en) * 2022-07-29 2022-10-04 东莞市风彩科技有限公司 Production process of paper screw cap

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1755597A (en) * 1924-03-17 1930-04-22 Eugene L Greenewald Bottle cap, container, and other reenforced product
US2330896A (en) * 1941-05-13 1943-10-05 Keith Peabody Inc Closure
US2390721A (en) * 1942-05-25 1945-12-11 Mallgraf Ferdinand Nonmetallic ferrule for caps of containers
US2403287A (en) * 1942-08-03 1946-07-02 Keith Peabody Inc Closure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010147463A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115790285A (en) * 2022-10-27 2023-03-14 刘绍武 Method for improving effect distribution uniformity of paper inner barrel, product and mould

Also Published As

Publication number Publication date
NL2003021C2 (en) 2010-12-16
WO2010147463A1 (en) 2010-12-23

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