GB2096052A - Corrugated board - Google Patents
Corrugated board Download PDFInfo
- Publication number
- GB2096052A GB2096052A GB8208297A GB8208297A GB2096052A GB 2096052 A GB2096052 A GB 2096052A GB 8208297 A GB8208297 A GB 8208297A GB 8208297 A GB8208297 A GB 8208297A GB 2096052 A GB2096052 A GB 2096052A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- corrugated board
- laminate
- fluting
- board according
- 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- Withdrawn
Links
- 238000000576 coating method Methods 0.000 claims abstract description 34
- 239000011248 coating agent Substances 0.000 claims abstract description 32
- 239000004033 plastic Substances 0.000 claims abstract description 13
- 229920003023 plastic Polymers 0.000 claims abstract description 13
- 239000002655 kraft paper Substances 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 17
- 239000011084 greaseproof paper Substances 0.000 claims description 13
- 239000004200 microcrystalline wax Substances 0.000 claims description 10
- 229940114937 microcrystalline wax Drugs 0.000 claims description 10
- 235000019808 microcrystalline wax Nutrition 0.000 claims description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 3
- 235000013305 food Nutrition 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 230000000063 preceeding effect Effects 0.000 claims 1
- 239000001993 wax Substances 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 238000010438 heat treatment Methods 0.000 description 14
- 239000003960 organic solvent Substances 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/20—Corrugating; Corrugating combined with laminating to other layers
- B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
- B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
- B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
- B31F1/2804—Methods
-
- 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
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/028—Paper layer
-
- 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
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- 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
- B32B2439/70—Food packaging
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
- Laminated Bodies (AREA)
- Paper (AREA)
Abstract
In a corrugated board, the or each outer facer layer comprises a laminate (12) of a first layer (13) having a water- proof coating (16) applied to its outer surface and a second, plastics layer (14) intermediate the first layer (13) and a conventional fluting layer (17). A third layer (15) may be provided between the second layer (14) and fluting layer (17). In one embodiment, two fluting layers are provided, separated by a central liner, a laminate outer facer layer being provided on each respective opposed face of each the fluting layer. <IMAGE>
Description
SPECIFICATION
Corrugated board
This invention relates to corrugated board and especially, but not exclusively, to such board for making food or produce container which may be subjected to extreme environmental conditions, for instance deep-freezing, thawing and other substantially wet conditions. Corrugated board in accordance with the invention is particularly suitable for manufacturing boxes used in the storage of meat and fish under deep-frozen conditions and in a subsequently defrosted and usually wet, state.
In accordance with the invention, there is provided a corrugated board wherein the or each outer facer layer comprises a laminate of a first layer having a waterproof coating applied to its outer surface and a second, plastics layer intermediate the first layer and a conventional fluting layer.
In accordance also with the invention, there is provided a method of manufacturing corrugated board, wherein the or each outer facer layer is formed as a laminate comprising a first layer and a second, plastics layer intermediate the first layer and a fluting layer of the finished board, and wherein the first layer of the or each laminate has a waterproof coating applied to its outer surface.
Preferably, the waterproof coating is applied in such a manner that it impregnates at least partially into the outermost layer, that is to say, the first layer, of the or each laminate, which may be conventional greaseproof paper. Such a layer of, say, greaseproof paper is secured to the respective second, intermediate plastics layer which may be made of polyethylene.
Advantageously, between the plastics layer and the fluting layer of the board, there is provided a third laminte layer of, preferably, Kraft paper which normally forms the outer facer layer of conventional corrugated board.
Where there is only one outer facer layer constituted by the laminate the backer layer of the board can be constituted by any suitable material, such as, the conventional Kraft paper layer.
Alternatively, where there are two outer facer layers constituted by two respective laminates, the or each conventional layer may have A, B, C or E flutes or other flute profile. Indeed, such a flute profile may also be used in the board having a single outer facer layer.
The waterproof coating can be of wax which may be applied to the or each first, outermost layer of the laminate by any suitable method, such as, in the form of a micro-crystalline wax which is water soluble and can,thus, be applied in solution.
Once such a wax solution has been applied to the or each first outermost layer, the laminate (s) is heated sufficient to evaporate the water solute, leaving the wax coating upon the exterior surface of the outermost layer(s). Under certain conditions, this heating step also assists in dispersing the wax in an even thickness coating over the exterior surface of the or each outer layer and, possibly, causes some of the wax to impregnate at least partially into this layer.
As an alternative to a micro-crystalline wax solution, the wax can be applied in the form of a dispersion or emulsion, although, in either alternative case; the associated water will have to be evaporated.
Instead of being made of wax, the waterproof coating may be made of an acrylic material, in which case, this acrylic coating can be applied to the outer surface of the or each first laminate layer in emulsion form, with subsequent water evaporation. Alternatively, such an acrylic coating may be applied in aqueous or organic solution or as a dispersion.
Although it is preferred to evaporate the water or organic solvent, as the case may be, by heating before the or each laminate is adhered to the respective fluting layer, the heating step can be applied at any other suitable stage in the manufacture of the corrugated board.
In order that the invention may be more fully understood, three preferred types of corrugated board, in accordance therewith, will now be described by way of example and with reference to the accompanying drawings in which:
Figure 1 is a sectional view of a first form of corrugated board having a single laminate outer facer layer;
Figure 2 is a sectional view of a second form of corrugated board having a single fluting layer with a laminate outer facer layer on each side thereof; and
Figure 3 is a sectional view of a third form of corrugated board with two fluting layers and respective laminate outer facer layers.
Referring first to Figure 1 of the drawings, a corrugated board 11 comprises a three component laminate 12 consisting of a first outermost layer of greaseproof paper 13, a second, intermediate plastics layer 14 of polyethylene, and a third, innermost layer 15 of Kraft paper. The laminate 12 is provided as a preformed product whose outermost greaseproof paper layer 13 is provided with a wax coating 16 applied in the form of a micro-crystaline wax solution in water, the water solute being subsequently evaporated by heating. This heating step is carried out before the laminate is applied to the conventional fluting layer 17 which is adhered to the inner surface of the Kraft paper layer 15.
The remaining component of the corrugated board is provided by the standard backer layer 18 of, say, Kraft paper.
Thus, it can be seen that the wax-coated laminate 12 replaces the standard facer layer of Kraft paper layer used in conventional corrugated board.
The heating step, which evaporates the water of the micro-crystalline solution, can be carried out at any suitable stage in the manufacture of the corrugated board, although it is preferred to evaporate the water before the wax-coated laminate 12 is adhered to the fluting layer 17, as discussed above.
Although the corrugated board in accordance with the invention provides a product which is more rigid and water resistant than conventional corrugated board, it can be made on a standard corrugating machine.
The micro-crystalline wax solution can be applied to the outer surface of the greaseproof layer 13 by any suitable means, for instance, by rolling, spraying or dipping.
The laminate 12, provided with the wax coating 16, constitutes the outer facer of the corrugated board which will eventually form the inner surfaces of a container made from the board. Such surfaces are highly waterproof, particularly if some of the wax coating 16 impregnates at least partially into the greaseproof paper layer 13 during the application and/or heating steps.
The Kraft paper layer 18 will, of course, form the outer surfaces of the container.
It will be appreciated that the wax coating 16 described above can be replced with any other suitable waterproof coating, for instance, and as discussed above, coating may be of an acrylic material applied in emulsion form. If, however, it is applied in solution with an organic solvent, then the latter can be evaporated off in the same way as the water solvent, and as described above with reference to the wax coating 16. An advantage in using an organic solvent for an acrylic coating is that such solvents evaporate at lower temperatures than does water, thus saving in energy and costs otherwise associated therewith.
Referring now to Figure 2 of the drawings, a corrugated board 21 comprises a first, three component laminate 22 consisting of a first, outermost layer of greaseproof paper 23, a second, intermediate plastics layer 24 of polyethylene, and a third, innermost layer 25 of Kraft paper. The laminate 22 is provided as a preformed product whose outermost, greaseproof paper layer 23 is provided with a wax coating 26 applied in the form of a micro-crystalline wax solution in water, the water solute being subseqently evaporated by heating. This heating step is carried out before the laminate is applied to the conventional fluting layer 27 which is adhered to the inner surface of the third, Kraft paper layer 25.
The corrugated board 21 comprises further a second, three component laminate 22' consisting of a first, outermost layer of greaseproof paper 23', a second, intermediate plastics layer 24' of polyethylene, and a third innermost layer 25' of Kraft paper. The laminate 22' is provided, as in the case of the laminate 22, as a preformed product whose outermost, greaseproof paper layer 23' is provided with a wax coating 26' applied in the form of a micro-crystalline wax solution in water, in the same way as the wax coating 26 upon the outermost, greaseproof paper layer 23 of the laminate 22.
Thus, it can be seen that the two wax-coated laminates 22, 22' replace the respective standard facer and backer layers of Kraft paper used in conventional corrugated board.
As in the case of the corrugted board discussed above with reference to Figure 1, the heating step, which evaporates the water of the micro-crystalline solution, can be carried out at any suitable stage in the manufacture of the corrugated board, it can be made on a standard corrugating machine, as mentioned above, or on two standard corrugators in tandem.
The micro-crystalline wax solution can be applied to the outer surfaces of the greasproof layers 23,23' by any suitable means, for instance, by rolling, spraying or dipping. Also, it will be appreciated that the laminates 22, 22', provided with the wax coating 26,26', will eventually form the inner and outer surfaces of a container made from the board. Such surfaces are highly waterproof, particularly if some of the wax coating 26, 26' impregnates at least partially into the greaseproof paper layers 23,23' during the application and/or heating steps.
Turning now to Figure 3 of the drawings, a corrugated board 31 comprises first and second, three component laminates 32 each consisting of a first, outermost layer of greaseprof paper 33, a second, intermediate plastics layer of polyethylene, and a third, innermost layer 35 of Kraft paper. The laminates 32 are provided as a preformed product whose outermost, greaseproof paper layers 33 are provided with respective wax coatings 36 applied in the form of a micro-crystalline wax solution in water, the water solute beng subsequently evaporated by heating. This heating step is carried out before the laminates 32 are applied to respective fluting layers 37 which are adhered to the inner surfaces of the respective Kraft paper layers 35.
The remaining component of the corrugated board 31 is provided by a central liner 38, of; say,
Kraft paper, which is located intermediate and adhered to the fluting layers 37.
As in the case of the corrugated boards 11,21 described above with reference to respective Figures 1 and 2, the heating step, which is used to evaporate the water of the micro-crystalline solution, can be carried out at any suitable stage in the manufacture of the corrugated board 31, although it is preferred, once again, to evaporate the water before the wax-coated laminates 32 are adhered to the fluting layers 37.
The micro-crystalline wax solution can be applied to the outer surface of the greaseproof layers 33 by any suitable means, as discussed above with reference to the corrugated boards 11,21 of respective
Figures 1 and 2.
Also, the wax coatings 36 can be replaced by any suitable waterproof coating, such as, an acrylic material applied in emulsion, solution or dispersion form.
Claims (21)
1. A corrugated board wherein the or each outer facer layer comprises a laminate of a first layer having a waterproof coating applied to its outer surface and a second, plastics layer intermediate the first layer and a conventional fluting layer.
2. A corrugated board according to claim 1, in which the waterproof coating is impregnated at least partially into the first layer of the laminate.
3. A corrugated board according to claim 1 or 2, in which the first layer of the laminate is a conventional greaseproof paper.
4. A corrugated board according to claim 1,2 or 3, in which the second, intermediate plastics layer is made of polyethylene.
5. A corrugated board according to any preceed ing claim, in which a third laminate layer is provided between the plastics and fluting layers.
6. A corrugated board according to claim 5, in which the third laminate layer is made of Kraft paper.
7. A corrugated board according to any preceding claim having one outer facer layer only, the backer layer of the board being made of Kraft paper.
8. A corrugated board according to any of claims 1 to 6 having two outer facer layers on opposed sides of a single fluting layer.
9. A corrugated board according to any of claims 1 to 6 having two outer facer layers and two fluting layers the outer facer layers being on respective opposed sides of the fluting layers.
10. A corrugated board according to claim 9, in which the two fluting layers are separated by a central liner adhesively secured thereto.
11. A corrugated board according to claim 10, in which the central liner is made of Kraft paper.
12. A corrugated board according to any preceding claim, in which the waterproof coating is a micro-crystalline wax.
13. A corrugated board according to any of claims 1 to 11, in which the waterproof caoting is of an acrylic material.
14. A corrugated board substantially as hereinbefore described with reference to and as shown in
Figures 1,2 or 3 of the accompanying drawings.
15. A food or produce container when made from a corrugated board according to any preceding claim.
16. A method of manufacturing corrugated board, wherein the or each outer facer layer is formed as a laminate comprising a first layer and a second, plastics layer intermediate the first layer and a fluting layer of the finished board, and wherein the first layer of the or each laminate has a waterproof coating applied to its outer surface.
17. A method according to claim 16, in which the waterproof coating is applied in such a mannerthat it impregnates at least partially into the first laminate layer.
18. A method according to claim 16 or 17, in which the waterproof coating is applied in the form of a micro-crystalline wax in an aqueous solution, disperson or emulsion.
19. A method according to claim 16 or 17, in which the waterproof coating is in the form of an acrylic material applied as an aqueous emulsion or dispersion or organic solution.
20. A method according to any of claims 16 to 19, in which the or each laminate is heated before being adhered to the respective fluting layer, to evaporate any solvent or carrier liquid asociated with the waterproof coating.
21. A method of manufacturing corrugated board substantially as hereinbefore described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8208297A GB2096052A (en) | 1981-04-08 | 1982-03-22 | Corrugated board |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8110974 | 1981-04-08 | ||
| GB8208297A GB2096052A (en) | 1981-04-08 | 1982-03-22 | Corrugated board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2096052A true GB2096052A (en) | 1982-10-13 |
Family
ID=26279071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8208297A Withdrawn GB2096052A (en) | 1981-04-08 | 1982-03-22 | Corrugated board |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2096052A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993022138A3 (en) * | 1992-04-27 | 1994-02-03 | Univ British Columbia | Lined and coated corrugated paperboard package systems for modified atmosphere packaging of fresh fruits and vegetables |
| US5575418A (en) * | 1993-09-30 | 1996-11-19 | The University Of British Columbia | Corrugated paperboard package systems with gas-permeable plastic membranes for modified atmosphere packaging of fresh fruits and vegetables and cut flowers |
| US5794770A (en) * | 1994-03-24 | 1998-08-18 | Union Camp Corporation | Easy opening carton for shipping and storing cut paper |
| AT7103U3 (en) * | 2004-06-29 | 2005-07-25 | Kernbichler Wolfgang Mag | PACKAGING MATERIAL AND CUTTING TO MANUFACTURE A PACKAGING FOR RECORDING BZW. STORAGE OF FOOD |
| WO2008076075A1 (en) * | 2006-12-19 | 2008-06-26 | Loong Keng Lim | Packaging systems for the control of relative humidity of fresh fruits, vegetables and flowers with simultaneous regulation of carbon dioxide and oxygen |
| DE10255039B4 (en) * | 2002-11-26 | 2012-06-21 | Polytec Riesselmann Gmbh & Co Kg | Flat pressed composite molded part with layer structure with at least one cavity-forming core layer |
| WO2015139833A1 (en) * | 2014-03-19 | 2015-09-24 | Roba Services Gmbh | Functionalized corrugated cardboard |
| CN109703865A (en) * | 2019-01-10 | 2019-05-03 | 熊雪根 | A kind of durable type waterproof carton |
| CN111231425A (en) * | 2020-02-20 | 2020-06-05 | 上海乐盈纸业有限公司 | Waterproof corrugated paper and preparation method thereof |
-
1982
- 1982-03-22 GB GB8208297A patent/GB2096052A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993022138A3 (en) * | 1992-04-27 | 1994-02-03 | Univ British Columbia | Lined and coated corrugated paperboard package systems for modified atmosphere packaging of fresh fruits and vegetables |
| US5609293A (en) * | 1992-04-27 | 1997-03-11 | The University Of British Columbia | Lined and coated corrugated paperboard package systems for modified atmosphere packaging of fresh fruits and vegetables |
| US5575418A (en) * | 1993-09-30 | 1996-11-19 | The University Of British Columbia | Corrugated paperboard package systems with gas-permeable plastic membranes for modified atmosphere packaging of fresh fruits and vegetables and cut flowers |
| US5794770A (en) * | 1994-03-24 | 1998-08-18 | Union Camp Corporation | Easy opening carton for shipping and storing cut paper |
| DE10255039B4 (en) * | 2002-11-26 | 2012-06-21 | Polytec Riesselmann Gmbh & Co Kg | Flat pressed composite molded part with layer structure with at least one cavity-forming core layer |
| AT7103U3 (en) * | 2004-06-29 | 2005-07-25 | Kernbichler Wolfgang Mag | PACKAGING MATERIAL AND CUTTING TO MANUFACTURE A PACKAGING FOR RECORDING BZW. STORAGE OF FOOD |
| WO2008076075A1 (en) * | 2006-12-19 | 2008-06-26 | Loong Keng Lim | Packaging systems for the control of relative humidity of fresh fruits, vegetables and flowers with simultaneous regulation of carbon dioxide and oxygen |
| WO2015139833A1 (en) * | 2014-03-19 | 2015-09-24 | Roba Services Gmbh | Functionalized corrugated cardboard |
| AU2015233866B2 (en) * | 2014-03-19 | 2019-07-18 | Roba Group Ag | Functionalized corrugated cardboard |
| US11155066B2 (en) | 2014-03-19 | 2021-10-26 | Roba Group Ag | Functionalized corrugated cardboard |
| CN109703865A (en) * | 2019-01-10 | 2019-05-03 | 熊雪根 | A kind of durable type waterproof carton |
| CN111231425A (en) * | 2020-02-20 | 2020-06-05 | 上海乐盈纸业有限公司 | Waterproof corrugated paper and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |