US20030010666A1 - Security sack - Google Patents

Security sack Download PDF

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Publication number
US20030010666A1
US20030010666A1 US09/902,108 US90210801A US2003010666A1 US 20030010666 A1 US20030010666 A1 US 20030010666A1 US 90210801 A US90210801 A US 90210801A US 2003010666 A1 US2003010666 A1 US 2003010666A1
Authority
US
United States
Prior art keywords
sack
ply
light
security
paper
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.)
Abandoned
Application number
US09/902,108
Inventor
Ian Samuel
Peter Symons
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.)
KORSNAS PAPER SACKS Ltd
Original Assignee
KORSNAS PAPER SACKS 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
Priority to PCT/IB2001/001256 priority Critical patent/WO2003000563A1/en
Application filed by KORSNAS PAPER SACKS Ltd filed Critical KORSNAS PAPER SACKS Ltd
Priority to US09/902,108 priority patent/US20030010666A1/en
Assigned to KORSNAS PAPER SACKS LIMITED reassignment KORSNAS PAPER SACKS LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SAMUEL, IAN A., SYMONS, PETER J.W.
Publication of US20030010666A1 publication Critical patent/US20030010666A1/en
Abandoned legal-status Critical Current

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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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/06—Layered products comprising a layer of paper or cardboard specially treated, e.g. surfaced, parchmentised
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/06—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance 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
    • 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/02—Wrappers or flexible covers
    • B65D65/16—Wrappers or flexible covers with provision for excluding or admitting light
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/03—3 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/71—Resistive to light or to UV
    • 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
    • B32B2313/00—Elements other than metals
    • B32B2313/04—Carbon
    • 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
    • B32B2317/00—Animal or vegetable based
    • B32B2317/12—Paper, e.g. cardboard
    • B32B2317/122—Kraft paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/02—Open containers
    • B32B2439/06—Bags, sacks, sachets

Definitions

  • This invention relates to light-proof security sacks comprising at least one kraft paper ply and at least one ply impervious to light.
  • the sacks can be used e.g. for storing and transporting materials which have to be protected from light.
  • the main object of the invention is to provide a paper sack which has good light-proof properties but which is also easy to recycle or destroy.
  • the invention and some embodiments thereof are defined in the patent claims.
  • the sack comprises at least one kraft paper ply and at least one paper ply impregnated with carbon.
  • the carbon impregnated ply provides imperviousness to light, and the kraft paper ply provides especially mechanical strength.
  • the sacks can be manufactured from paper webs by applying conventional techniques.
  • the sacks can be used for the storing and transport of any goods which need to be protected from light or from unauthorised scanning.
  • the carbon impregnated paper ply can be used as part of a laminate comprising at least one paper layer and at least one carbon impregnated layer laminated on one of the paper layers.
  • the ply may comprise e.g. paper layer and one carbon impregnated layer, or two paper layers and a carbon impregnated layer between them.
  • the carbon impregnated ply may also be coated on one or both sides to form a carbon-cored ply.
  • Carbon impregnated papers are commercially available.
  • the sack may comprise several kraft paper plies.
  • the sack may comprise e.g. two kraft paper plies and a carbon impregnated ply or laminated paper ply between them.
  • the sack can be easily recycled, if desired.
  • the carbon can be removed in a similar way as the carbon black of printing inks.
  • the sack can also be easily burnt or composted with other paper waste, if desired.
  • the carbon laminated paper ply will also aid the dissipation of static electricity. This will enable the sacks to be more safely used for materials which have a risk of self combustion due static discharge or which may be damaged by static electricity.
  • the carbon impregnated ply or laminate can be earthed by a suitable probe to equipments with sufficient conductivity. Such discharges may especially occur when the sacks are filled with powder or granular material.
  • the sack can be made permeable to air. This may be necessary e.g. when storing certain food products like vegetables.
  • the sack can also be made permeable to moisture. Thus water condensed inside the sack can be removed through the sack.
  • the sack can be scanned by security type X-ray equipment to prevent misuse.
  • the sacks will also have a tamper-evident feature as any attempt to gain access cannot be repaired or disguised, especially when the carbon impregnated paper ply is used as a lamination or a carbon-cored ply. This is an additional property that could assist on the proffered security.
  • these packing materials can be in certain circumstances too dense or light protection is not efficient enough; e.g. when storing vegetables a packing material must be at same time breathable and light proofing.
  • FIG. 1 is a general view illustrating the security sack in accordance with this invention.
  • the security sack of the embodiment of the present invention comprises of one kraft paper ply ( 1 ) and one carbon impregnated paper ply ( 2 ). These two plies of paper are laminated together to form a light-proof and strong paper ply.
  • the laminated paper ply is cut in a shape of a horizontal rectangle. This horizontal rectangle is then folded inwards along the vertical corner folds ( 3 ) and outwards along the vertical center folds ( 4 ). These vertical center folds ( 4 ) allow the security sack to be stored flat, and when the security sack is used, they allow the body of the security sack to expand in volume. After the folding of the vertical folds, the vertical edges of the laminated paper ply are joined together along the vertical seam ( 5 ) to form the body of the security sack. Vertical edges are joined together preferably with glue or other adhesive material.
  • the bottom of the security sack is formed by folding the bottom part of the body along the horizontal bottom fold ( 6 ).
  • the bottom fold ( 6 ) can consist of several horizontal folds to increase the durability of the security sack.
  • the lower horizontal edge of the body is joined together with the body of the sack along the horizontal seam ( 7 ) with glue or other adhesive material.
  • an opening ( 8 ) for inserting objects in to the security sack In the upper part of the security sack there is left an opening ( 8 ) for inserting objects in to the security sack.
  • the edges of this opening can also be provided with glue or other adhesive material to ease the sealing of the security sack.
  • the security sack of the present invention can vary in shape and in size. It can have several or none center folds and the bottom of the security sack can be formed by glueing the edges of the bottom part of the body together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Bag Frames (AREA)
  • Buffer Packaging (AREA)
  • Laminated Bodies (AREA)
  • Gloves (AREA)

Abstract

A security sack comprising at least one kraft paper ply and at least one light-proof paper ply impregnated with carbon and used either on its own or as part of a lamination.

Description

    FIELD OF THE INVENTION
  • This invention relates to light-proof security sacks comprising at least one kraft paper ply and at least one ply impervious to light. The sacks can be used e.g. for storing and transporting materials which have to be protected from light. [0001]
    • BACKGROUND OF THE INVENTION
  • Many materials need to be protected from light during storing, transport or handling. Such materials are e.g. light sensitive and photosensitive papers and films, many food products, and also many sensitive products of high technology. [0002]
  • In light-proof paper-based sacks, a black plastic film is usually used. Also papers with aluminium foils are used, One drawback of these materials is that they cannot be comfortably destroyed or recycled with paper material. [0003]
    • SUMMARY OF THE INVENTION
  • The main object of the invention is to provide a paper sack which has good light-proof properties but which is also easy to recycle or destroy. The invention and some embodiments thereof are defined in the patent claims. [0004]
  • According to the invention, the sack comprises at least one kraft paper ply and at least one paper ply impregnated with carbon. The carbon impregnated ply provides imperviousness to light, and the kraft paper ply provides especially mechanical strength. [0005]
  • The sacks can be manufactured from paper webs by applying conventional techniques. The sacks can be used for the storing and transport of any goods which need to be protected from light or from unauthorised scanning. [0006]
  • Alternatively, the carbon impregnated paper ply can be used as part of a laminate comprising at least one paper layer and at least one carbon impregnated layer laminated on one of the paper layers. The ply may comprise e.g. paper layer and one carbon impregnated layer, or two paper layers and a carbon impregnated layer between them. The carbon impregnated ply may also be coated on one or both sides to form a carbon-cored ply. Carbon impregnated papers are commercially available. [0007]
  • The sack may comprise several kraft paper plies. The sack may comprise e.g. two kraft paper plies and a carbon impregnated ply or laminated paper ply between them. [0008]
  • The sack can be easily recycled, if desired. The carbon can be removed in a similar way as the carbon black of printing inks. The sack can also be easily burnt or composted with other paper waste, if desired. [0009]
  • The carbon laminated paper ply will also aid the dissipation of static electricity. This will enable the sacks to be more safely used for materials which have a risk of self combustion due static discharge or which may be damaged by static electricity. The carbon impregnated ply or laminate can be earthed by a suitable probe to equipments with sufficient conductivity. Such discharges may especially occur when the sacks are filled with powder or granular material. [0010]
  • The sack can be made permeable to air. This may be necessary e.g. when storing certain food products like vegetables. [0011]
  • The sack can also be made permeable to moisture. Thus water condensed inside the sack can be removed through the sack. [0012]
  • The sack can be scanned by security type X-ray equipment to prevent misuse. [0013]
  • The sacks will also have a tamper-evident feature as any attempt to gain access cannot be repaired or disguised, especially when the carbon impregnated paper ply is used as a lamination or a carbon-cored ply. This is an additional property that could assist on the proffered security. However these packing materials can be in certain circumstances too dense or light protection is not efficient enough; e.g. when storing vegetables a packing material must be at same time breathable and light proofing.[0014]
    • BRIEF DESCRIPTION OF THE DRAWING
  • FIG. 1 is a general view illustrating the security sack in accordance with this invention.[0015]
    • DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Referring to the drawing, there is shown a general view of the security sack in accordance with this invention. The security sack of the embodiment of the present invention comprises of one kraft paper ply ([0016] 1) and one carbon impregnated paper ply (2). These two plies of paper are laminated together to form a light-proof and strong paper ply.
  • To manufacture the security sack according this invention, first the laminated paper ply is cut in a shape of a horizontal rectangle. This horizontal rectangle is then folded inwards along the vertical corner folds ([0017] 3) and outwards along the vertical center folds (4). These vertical center folds (4) allow the security sack to be stored flat, and when the security sack is used, they allow the body of the security sack to expand in volume. After the folding of the vertical folds, the vertical edges of the laminated paper ply are joined together along the vertical seam (5) to form the body of the security sack. Vertical edges are joined together preferably with glue or other adhesive material.
  • After the body of the security sack is formed, the bottom of the security sack is formed by folding the bottom part of the body along the horizontal bottom fold ([0018] 6). The bottom fold (6) can consist of several horizontal folds to increase the durability of the security sack. After the folding of the bottom part, the lower horizontal edge of the body is joined together with the body of the sack along the horizontal seam (7) with glue or other adhesive material.
  • In the upper part of the security sack there is left an opening ([0019] 8) for inserting objects in to the security sack. The edges of this opening can also be provided with glue or other adhesive material to ease the sealing of the security sack.
  • It is evident for one skilled in art that the present invention is not limited to the foregoing description, but includes that contained in the claims. For example the security sack of the present invention can vary in shape and in size. It can have several or none center folds and the bottom of the security sack can be formed by glueing the edges of the bottom part of the body together. [0020]

Claims (6)

1. A security sack comprising at least one kraft paper ply and at least one light-proof ply, characterized in that the light-proof layer comprises at least one paper ply impregnated wit carbon.
2. A sack according to claim 1, characterised in that the material comprises two kraft paper plies.
3. A sack according to claims 2, characterised in that it comprises the light-proof ply between the kraft paper plies.
4. A sack according to any of the foregoing claims, characterised in that the light-proof ply comprises two paper layers and a carbon layer between them.
5. A sack according to any of the foregoing claims, characterised in that the light-proof ply is provided with an earthing probe.
6. Use of a sack according to any of claims 1 to 5 for light sensitive or photosensitive materials, or for products sensitive to static electricity.
US09/902,108 2001-06-21 2001-07-11 Security sack Abandoned US20030010666A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/IB2001/001256 WO2003000563A1 (en) 2001-06-21 2001-06-21 Security sack
US09/902,108 US20030010666A1 (en) 2001-06-21 2001-07-11 Security sack

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/IB2001/001256 WO2003000563A1 (en) 2001-06-21 2001-06-21 Security sack
US09/902,108 US20030010666A1 (en) 2001-06-21 2001-07-11 Security sack

Publications (1)

Publication Number Publication Date
US20030010666A1 true US20030010666A1 (en) 2003-01-16

Family

ID=26318629

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/902,108 Abandoned US20030010666A1 (en) 2001-06-21 2001-07-11 Security sack

Country Status (2)

Country Link
US (1) US20030010666A1 (en)
WO (1) WO2003000563A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4903834A (en) * 1986-03-10 1990-02-27 Fuji Photo Film Co., Ltd. Package for thermosensitive recording materials
DK0563533T3 (en) * 1992-03-30 1999-08-30 Kolb Wellpappe Hans Corrugated cardboard

Also Published As

Publication number Publication date
WO2003000563A1 (en) 2003-01-03
WO2003000563A8 (en) 2004-03-04

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Legal Events

Date Code Title Description
AS Assignment

Owner name: KORSNAS PAPER SACKS LIMITED, UNITED KINGDOM

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SAMUEL, IAN A.;SYMONS, PETER J.W.;REEL/FRAME:012709/0294

Effective date: 20010907

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION