[go: up one dir, main page]

WO1996012851A1 - Layered packaging or covering material, method for its manufacture and packing or cover made from this material - Google Patents

Layered packaging or covering material, method for its manufacture and packing or cover made from this material Download PDF

Info

Publication number
WO1996012851A1
WO1996012851A1 PCT/NL1995/000366 NL9500366W WO9612851A1 WO 1996012851 A1 WO1996012851 A1 WO 1996012851A1 NL 9500366 W NL9500366 W NL 9500366W WO 9612851 A1 WO9612851 A1 WO 9612851A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper
adhesive
sack
manufacture
paper layers
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.)
Ceased
Application number
PCT/NL1995/000366
Other languages
French (fr)
Inventor
Aart Vijfvinkel
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.)
WALKI SACK BV
Original Assignee
WALKI SACK 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 WALKI SACK BV filed Critical WALKI SACK BV
Priority to AU38170/95A priority Critical patent/AU3817095A/en
Publication of WO1996012851A1 publication Critical patent/WO1996012851A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/32—Multi-ply with materials applied between the sheets
    • 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
    • B32B2250/26—All layers being made of paper or paperboard
    • 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
    • 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
    • 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
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for

Definitions

  • the present invention relates to packaging or covering material to be used for, for instance, sacks, covers for steel rolls or in insulating material for roof- coverings.
  • a layered material is known which is used for making sacks for storage and transport of, for instance, caprolactam or other granulates. Such sacks are exposed to very damaging influences such as light, damp, mechanic loads and the like, and the sacks are supposed to protect the contents against these.
  • the layered paper may be used on its own or as outer sack in a so-called double sack and comprises in the known embodiment five layers, which are successively a paper layer, a polyethylene adhesive layer, a woven polypropylene layer, another polyethylene adhesive layer and finally another paper layer. While such a complex layered material is strong, it is also expensive and cannot be recycled because of the mixture of paper and plastic.
  • the material according to the invention is characterized in that the material exclusively comprises at least three paper layers bonded by adhesive agent based on biopolymers.
  • the biopolymeric adhesive consists preferably of starch glue to which preferably a moisture proof additive has been added.
  • a special embodiment of the material that is in particular intended for making packing sacks is characterized in that on the material parallel ribs are formed which, when applied to sacks, run longitudinally over the sacks. These ribs lend the material stiffness in the direction perpendicular to the ribs, which is especially desirable when applied to sacks while the sacks are being filled, as the stiffness keeps the sack standing up properly without having the tendency to collapse or bend over.
  • the ribs in the material are preferably formed by feeding the wet strips of material through a mill, of which at least one roller, but preferably the rollers at both sides of the paper, are provided with circumferential grooves. In this way the paper is compressed between the rollers and forced into the roller grooves, resulting in a sturdy paper with a stiffness provided by the ribs.
  • the invention will hereafter be further elucidated with reference to the drawing illustrating an embodiment of the material according to the invention.
  • five layers of paper 1-5 are used which are interconnected by means of a biopolymeric adhesive 6, in particular starch glue.
  • the starch glue will be present not only between but also in the paper layers 1-5.
  • a moisture proofing additive has been added to the starch in order to render the material moisture proof respectively water proof.
  • very strong paper may be used having a TEA (Tensile Energy Absorption) of 3.3 - 3.5, but, depending on the application, one may, of course, use any kind of paper.
  • the number of layers may also be varied.
  • the illustrated embodiment of the material is especially intended for the manufacture of strong sacks for packaging granulates such as caprolactam.
  • an outer sack may be formed from the material according to the invention inside of which a removable inner sack may be placed.
  • parallel ribs 7 and in between grooves 8 are provided, on opposite surfaces of the material, in accordance with the invention in order to give stiffness to the material in the direction perpendicular to the ribs. The ribs will therefore extend longitudinally over the sack.
  • the ribs which only need to have a height of a few micrometers, are preferably formed directly after assembling the five paper layers with starch glue in between them, by feeding the wet strips of material into the nip of rollers that are provided with circumferential grooves.

Landscapes

  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Making Paper Articles (AREA)

Abstract

The invention relates to a layered packaging or covering material provided with at least two paper layers bonded by means of adhesive. The material comprises exclusively at least three paper layers bonded by means of biopolymeric adhesive. The invention comprises also a method for the manufacture of such material, wherein at least three paper layers, each with a biopolymeric adhesive in between are joined together and bonded by means of rollers.

Description

Layered packaging or covering material, method for its manufacture and packing or cover made from this material
The present invention relates to packaging or covering material to be used for, for instance, sacks, covers for steel rolls or in insulating material for roof- coverings. A layered material is known which is used for making sacks for storage and transport of, for instance, caprolactam or other granulates. Such sacks are exposed to very damaging influences such as light, damp, mechanic loads and the like, and the sacks are supposed to protect the contents against these. The layered paper may be used on its own or as outer sack in a so-called double sack and comprises in the known embodiment five layers, which are successively a paper layer, a polyethylene adhesive layer, a woven polypropylene layer, another polyethylene adhesive layer and finally another paper layer. While such a complex layered material is strong, it is also expensive and cannot be recycled because of the mixture of paper and plastic.
It is the object of the present invention to provide a new layered packaging or covering material, in which said problems are effectively removed.
To achieve this, the material according to the invention is characterized in that the material exclusively comprises at least three paper layers bonded by adhesive agent based on biopolymers.
By manufacturing the material exclusively of paper and of biopolymeric adhesive, a material is obtained which is completely recyclable, offering many advantages for the protection of the environment. It has further been found, surprisingly, that the layered material is much stronger than the sum of the strengths of the individual paper layers. Although this synergic effect is known in the field of plastics, in the field of paper it is a surprising result. If a very strong paper sort (for instance one having a TEA of 3.3 - 3.5) is chosen for the paper layers, a very strong paper material is obtained. The biopolymeric adhesive consists preferably of starch glue to which preferably a moisture proof additive has been added. These measures provide, at little cost, a moisture proof material. A special embodiment of the material that is in particular intended for making packing sacks, is characterized in that on the material parallel ribs are formed which, when applied to sacks, run longitudinally over the sacks. These ribs lend the material stiffness in the direction perpendicular to the ribs, which is especially desirable when applied to sacks while the sacks are being filled, as the stiffness keeps the sack standing up properly without having the tendency to collapse or bend over. The ribs in the material are preferably formed by feeding the wet strips of material through a mill, of which at least one roller, but preferably the rollers at both sides of the paper, are provided with circumferential grooves. In this way the paper is compressed between the rollers and forced into the roller grooves, resulting in a sturdy paper with a stiffness provided by the ribs.
The invention will hereafter be further elucidated with reference to the drawing illustrating an embodiment of the material according to the invention. In the embodiment example shown in the drawing five layers of paper 1-5 are used which are interconnected by means of a biopolymeric adhesive 6, in particular starch glue. Naturally, the starch glue will be present not only between but also in the paper layers 1-5. A moisture proofing additive has been added to the starch in order to render the material moisture proof respectively water proof. For the paper layers 1-5 very strong paper may be used having a TEA (Tensile Energy Absorption) of 3.3 - 3.5, but, depending on the application, one may, of course, use any kind of paper. The number of layers may also be varied. In the drawing five layers of paper are used, but it is also possible to use only three or four layers or more than five layers. The illustrated embodiment of the material is especially intended for the manufacture of strong sacks for packaging granulates such as caprolactam. In this case an outer sack may be formed from the material according to the invention inside of which a removable inner sack may be placed. In order to give the sack stiffness so that it stays open properly during filling, parallel ribs 7 and in between grooves 8 are provided, on opposite surfaces of the material, in accordance with the invention in order to give stiffness to the material in the direction perpendicular to the ribs. The ribs will therefore extend longitudinally over the sack. The ribs, which only need to have a height of a few micrometers, are preferably formed directly after assembling the five paper layers with starch glue in between them, by feeding the wet strips of material into the nip of rollers that are provided with circumferential grooves.
Tests have shown that the total strength of the material formed in accordance with the invention and having five paper layers, is 1.6 to 1.7 times that of the five paper layers separately, which is quite surprising. The invention therefore makes it possible to provide an inexpensive material which is both completely recyclable and strong. The invention is not limited to the example given in the drawing and described above, but may be varied in different ways within the scope of the invention. For instance, other biologically degradable substances may be added to the paper.

Claims

1. A layered packaging or covering material provided with at least two paper layers bonded by means of adhesive, characterized in that the material comprises exclusively at least three paper layers bonded by means of biopolymeric adhesive.
2. A material according to claim 1, wherein the adhesive consists of starch glue.
3. A material according to claim 2, wherein a moisture proof additive is added to the starch glue.
4. A material according to one of the preceding claims, in particular for making a packaging sack, wherein parallel ribs are formed on the material.
5. A method for the manufacture of a strip of material according to one of the preceding claims, wherein at least three paper layers, each with a biopolymeric adhesive in between, are joined together and bonded by means of rollers.
6. A method according to claim 5, wherein the wet strip of material is fed between rollers of which at least one is provided with circumferential grooves.
7. A sack made from material according to one of the claims 1-4.
8. A sack according to claim 7 manufactured from paper according to claim 4, wherein the parallel ribs extend longitudinally over the sack.
PCT/NL1995/000366 1994-10-21 1995-10-20 Layered packaging or covering material, method for its manufacture and packing or cover made from this material Ceased WO1996012851A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU38170/95A AU3817095A (en) 1994-10-21 1995-10-20 Layered packaging or covering material, method for its manufacture and packing or cover made from this material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9401752A NL9401752A (en) 1994-10-21 1994-10-21 Laminated packaging or covering material, method for the production thereof and packaging or covering formed from this material.
NL9401752 1994-10-21

Publications (1)

Publication Number Publication Date
WO1996012851A1 true WO1996012851A1 (en) 1996-05-02

Family

ID=19864815

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1995/000366 Ceased WO1996012851A1 (en) 1994-10-21 1995-10-20 Layered packaging or covering material, method for its manufacture and packing or cover made from this material

Country Status (3)

Country Link
AU (1) AU3817095A (en)
NL (1) NL9401752A (en)
WO (1) WO1996012851A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012009514A1 (en) * 2010-07-14 2012-01-19 Biovation, Llc Cellulosic biolaminate composite assembly and related methods
US8389107B2 (en) 2008-03-24 2013-03-05 Biovation, Llc Cellulosic biolaminate composite assembly and related methods

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB944804A (en) * 1960-05-19 1963-12-18 Nationale Zetmeelindustrie N V Improvements in or relating to the sizing, coating and laminating of paper and paper-board
US3992252A (en) * 1973-06-07 1976-11-16 Commonwealth Scientific And Industrial Research Organization Curtain coating apparatus for the manufacture of paperboard
DE9014969U1 (en) * 1990-08-10 1991-03-21 Teich, Walter, Dr., O-7010 Leipzig Non-waveable watercolor paper
WO1993011300A1 (en) * 1991-11-25 1993-06-10 Raision Tehtaat Oy Ab A method for reducing the permeability of paper and board and a substance for the method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB944804A (en) * 1960-05-19 1963-12-18 Nationale Zetmeelindustrie N V Improvements in or relating to the sizing, coating and laminating of paper and paper-board
US3992252A (en) * 1973-06-07 1976-11-16 Commonwealth Scientific And Industrial Research Organization Curtain coating apparatus for the manufacture of paperboard
DE9014969U1 (en) * 1990-08-10 1991-03-21 Teich, Walter, Dr., O-7010 Leipzig Non-waveable watercolor paper
WO1993011300A1 (en) * 1991-11-25 1993-06-10 Raision Tehtaat Oy Ab A method for reducing the permeability of paper and board and a substance for the method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8389107B2 (en) 2008-03-24 2013-03-05 Biovation, Llc Cellulosic biolaminate composite assembly and related methods
WO2012009514A1 (en) * 2010-07-14 2012-01-19 Biovation, Llc Cellulosic biolaminate composite assembly and related methods

Also Published As

Publication number Publication date
NL9401752A (en) 1996-06-03
AU3817095A (en) 1996-05-15

Similar Documents

Publication Publication Date Title
US11390445B1 (en) Packaging products and associated material
US3768724A (en) Cushioned shipping bag
US7335409B2 (en) Polymer-coated heat-sealable packaging material, method for manufacturing the same and a closed package made thereof
US20060243621A1 (en) Corner or edge protector exhibiting improved flexural strength and resistance properties
KR19990067244A (en) Laminateable packaging laminate and process for making same
CS226727B2 (en) Lamellar member folding system
HK1004331A1 (en) Sleeved stacks for compact packaging of flexible articles
HK1004331B (en) Sleeved stacks for compact packaging of flexible articles
US20250058936A1 (en) Packaging bag and use of the packaging bag
US5612129A (en) Sheet material
EP0751882B1 (en) Honeycomb structure for crash protection structures
US20050147331A1 (en) General purpose bag having film and mesh portions
US20050054252A1 (en) Recyclable, multi-layer packaging material capable of water absorption and desorption
US2237809A (en) Container
US5624030A (en) Packaging assembly for pallet transport of goods
US20060141215A1 (en) Corrugated product
WO1996012851A1 (en) Layered packaging or covering material, method for its manufacture and packing or cover made from this material
US3093287A (en) Multi-wall fiber can
US20130341225A1 (en) Poly-coated roll header for paper roll and method for wrapping a paper roll using the same
FI89889C (en) FOERFARANDE ATT FRAMSTAELLA EN BEHAOLLARESAECK
US20020187694A1 (en) Mesh reinforced breathable plastic film
CA2821157A1 (en) Protective wrapper for rolls and method for wrapping a roll using the same
EP0772549A1 (en) Pallet and its method of manufacture
EP0886575B1 (en) Plate, panel or similar, of thermoformable multilayer material and method for its fabrication
EP0307443B1 (en) Wrapping material, method of manufacture and method of use

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AM AT AU BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU IS JP KE KG KP KR KZ LK LR LT LU LV MD MG MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TT UA UG US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE MW SD SZ UG AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: CA