NL2011107C2 - Improved sealed paper sachet. - Google Patents
Improved sealed paper sachet. Download PDFInfo
- Publication number
- NL2011107C2 NL2011107C2 NL2011107A NL2011107A NL2011107C2 NL 2011107 C2 NL2011107 C2 NL 2011107C2 NL 2011107 A NL2011107 A NL 2011107A NL 2011107 A NL2011107 A NL 2011107A NL 2011107 C2 NL2011107 C2 NL 2011107C2
- Authority
- NL
- Netherlands
- Prior art keywords
- paper
- sachet
- glue
- air permeability
- bag
- Prior art date
Links
- 239000000853 adhesive Substances 0.000 claims abstract description 29
- 230000035699 permeability Effects 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 3
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 3
- 239000011734 sodium Substances 0.000 claims abstract description 3
- 239000000123 paper Substances 0.000 claims description 79
- 230000001070 adhesive effect Effects 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 18
- 239000003292 glue Substances 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 12
- 238000007639 printing Methods 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 6
- 239000002655 kraft paper Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000011343 solid material Substances 0.000 abstract 1
- 244000269722 Thea sinensis Species 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 229920006173 natural rubber latex Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 235000013409 condiments Nutrition 0.000 description 2
- 235000009508 confectionery Nutrition 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 235000008216 herbs Nutrition 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 244000223014 Syzygium aromaticum Species 0.000 description 1
- 235000016639 Syzygium aromaticum Nutrition 0.000 description 1
- MUMGGOZAMZWBJJ-DYKIIFRCSA-N Testostosterone Chemical compound O=C1CC[C@]2(C)[C@H]3CC[C@](C)([C@H](CC4)O)[C@@H]4[C@@H]3CCC2=C1 MUMGGOZAMZWBJJ-DYKIIFRCSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000008135 aqueous vehicle Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 230000000749 insecticidal effect Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010447 natron Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
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
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
- B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
- B65D85/808—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package for immersion in the liquid to release part or all of their contents, e.g. tea bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B29/00—Packaging of materials presenting special problems
- B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
- B65B29/028—Packaging of substances, e.g. tea, which are intended to be infused in the package packaging infusion material into filter bags
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Bag Frames (AREA)
- Wrappers (AREA)
Abstract
The bag has a closed bag unit made from water-permeable paper, and partially water-soluble solid material provided in the bag unit. The paper has weight of 20 to 60 gram per meter square and has thickness of 40 to 80 micrometers. Air permeability of the paper is measured by an air permeability measuring device, and amounts to specific value. The paper is recycled from sodium craft-paper, and a surface is provided with adhesive agent. A strip having marking is inserted into a seal during closing of the bag unit. An independent claim is also included for a method for manufacturing a bag.
Description
Title: Improved sealed paper sachet
FIELD OF THE INVENTION
The invention relates to the field of packaging, more particular permeable packaging, specifically packages made from paper. In particular, the invention relates to paper, sealed sachets containing material that has to be slowly dissolved.
5
BACKGROUND
Packages to be used for dissolving its contents into a liquid have been used extensively; the most commonly known package for this purpose is the tea bag. In order to prevent 10 spilling its contents the tea bag has historically been closed by a metal staple or by a wire stitch, but this proved unsatisfactory and it has been replaced by a sealing mechanism, for which the tea bag material has been provided with dispersed thermoplastic material, such as fibres from polyethylene, polyvinylchloride, polypropylene or copolymers thereof This material has not only been used for tea, but 15 also for preparations for cut flowers, as disclosed in WO 01/96206.
However, the tea bag sachets according to WO 01/96206 have the disadvantage that they are relatively expensive and that they have plastic components, which is - in principle - harmful for the environment if the sachet ends up in the waste stream. Normal paper has the disadvantage that it is not sufficiently permeable, so that any 20 water-soluble compound contained in the sachet will not be solved and/or not permeated out the sachet into the solvent.
Accordingly, there is still need for a cheap sachet that is made of a material that is more environmental friendly.
25 2
SUMMARY OF THE INVENTION
The invention now resides in a sachet comprising: a. a closed bag which is formed from water-permeable paper, and 5 b. a solid substance, which is contained within the bag, -2 -1 characterized in that the paper has an air permeability of at least 0.8 L.m" .s~ tested by a Textest FX 3300 III air permeability tester, more preferably more than 1 and most preferably between 0.8 and 5 L.m'2.s'1. To achieve such an air permeability the paper preferably has a porosity of 500-1000 ml/min.
10 Such a sachet preferably has a weight of 20 - 60 g/m and a thickness of 40 - 80 pm and more preferably a weight of about 40 g/m and a thickness of about 60-70 pm.
In a preferred embodiment, the sachet comprises paper that is recycled from sodium kraft (Natronkraft) paper.
In a further preferred embodiment, the paper comprises an area that is dedicated for 15 sealing. Said area is preferably provided with adhesive. Said adhesive is preferably an adhesive, which is suitable for hot-seal sealings or alternatively an adhesive, which is suitable for cold-seal sealings. In a further preferred embodiment, one side of the complete paper is provided with adhesive, while the paper still maintains sufficient porosity, i.e. the porosity characteristics still fall within the above-mentioned ranges.
20 In a further preferred embodiment the solid substance which is contained within the bag is at least partly water soluble. In yet another embodiment one side of the paper is suitable for printing.
The invention also comprises a method for producing a sachet according to the invention, comprising the steps of 25 a.optionally printing text and/or figures on one side of paper, said paper having an -2 -1 air permeability of at least 0.8 L.m' .s' tested by a Textest FX 3300 III air permeability tester, more preferably more than 1 and most preferably between 0.8 and 5 L.m'2.s'1; b. applying adhesive at one side of said paper c. folding or cutting two identical sachet’s halves from said paper; 30 d. partly sealing said sachet’s halves to each other to form an open sachet; e. filling said open sachet with a solid substance; and 3 f. closing the sachet by sealing
In a preferred embodiment in said method during sealing a string with an attached label is introduced in the seal.
5 DETAILED DESCRIPTION
In this application the term sachet is used for a closed bag comprising an at least partly water soluble composition, which composition is preferably in a powdery form. Accordingly, the sachet can be placed in water after which the composition in the sachet 10 will slowly dissolve and permeate out of the sachet.
Such a sachet is especially useful in applications in which a compound needs to be dissolved and where the time that it takes for the compound to be dissolved is not critical. The major example in this respect, for which the sachet has been especially developed, is the provision of nutrients or other compounds to cut flowers. However, it 15 is also envisaged that the sachets can be used as ‘tea-bags’ for making tea or other brews that can be made by extraction from leaves or other parts of plants (roots, stems, etc.). They could also be used for mixing (extracts of) herbs or condiments in watery solutions, especially in cases where the herbs or condiments should not remain in the solution (such as e.g. cloves or bay leaves). In these cases the sachets preferably would 20 have a small string or cord with which they can be easily taken out the solution again.
It can also be used in less fluid, but more moist surroundings, such as potting compost or soil, to provide nutrients (fertilizers) and/or agricultural crop protection compounds such as insecticidal or fungicidal compounds.
25 According to the invention a suitable paper for the above uses is a paper that has an air permeability of at least 0.8 L.m' .s" as tested in a Textest FX 3300 III air permeability tester (Testex Instruments, Schwerzenbach, Switzerland) and preferably more than 1 L.m'2.s'1. Such an air permeability can be achieved with a porosity of the paper of about 500-1000 ml/min. This porosity is the result of a measurement with a Bendtsen 30 prosimeter, e.g. according to ISO 5636-3 applying an air pressure of 1.47 kPa and measuring over a surface of 10 cm . Bendtsen porosimeters are obtainable e.g. from 4
Fibretec (india).
Such a porosity indicates that the openings in the paper are sufficient to allow passage of dissolved (small) molecules. Further, it is preferred that the openings in the paper are relatively small as to prevent outflow of the solid substance, often in powder form, 5 before the sachet is immersed in the fluid, e.g. to prevent outflow of the solid substance inside the sachet during storage or handling. This is again one of the disadvantages of the non-plastic sachets that are currently on the market, such as the sachets that are made of tea bag paper, from which the powder of the solid substance inside is easily spoiled. This causes an atmosphere of fine dust particles during storage and transport of 10 the sachets, which - of course dependant on the nature of the solid substance that is packaged in the sachets - can be detrimental to the safety of the people handling the material. Also, of course, any spill of the solid substance is a loss of value.
For this reason, the air permeability is preferably less than 5 L.m“2.s_1.
15 In order to enable handling of the paper, it preferably has a weight of 20 - 60 g/m2 and a thickness of 40 - 80 pm, more specifically, the paper will preferably have a weight of about 40 g/m2 and a thickness of about 60 - 70 pm. These weight and thickness parameters ensure an easy handling of the paper, which can be provided on reels or in any other way paper is normally handled and transported.
20 Preferably, the paper is recycled Natronkraft paper. This is paper made using the kraft process (also known as kraft pulping or sulfate process), which is a technology for conversion of wood into wood pulp consisting of almost pure cellulose fibers. The process entails treatment of wood chips with a mixture of sodium hydroxide and sodium sulfide, known as white liquor, that break the bonds that link lignin to the cellulose.
25 Natronkraft paper is a sort of paper that is commercially available and that is used as wrapping paper. In most of the cases it is plain brown, although there are also versions in which the paper is striped with lighter brown bands. It is especially useful for packaging and wrapping, since it has a relatively high tear resistance.
Preferably, use is made of Natronkraft paper that is partly or completely recycled. The 30 recycling of (Natron)kraft paper decreases the quality of the paper, but to an extent that is advantageous for the present invention: by recycling the air permeability of the paper 5 is increased.
In order to maintain the contents of the sachet until the sachet is placed in a fluid and the solid substance is solved and dissipates from the sachet in solved condition, the sachet preferably should be sealed. In order to obtain a proper sealing, at least a part of the 5 paper should be prepared with sealant and after filling of the sachet, the sealant needs to be activated whereby the sachet will close. The sealant may be any adhesive that is normally used in the paper industry to seal paper, e.g. to make bags. Preferably, the adhesive is an adhesive on water basis, which can be used either to adhere by hot sealing or by cold sealing.
10 The technology for cold seal adhesives dates back many years. The formulations for these products commonly contain natural rubber latex, which is the predominant ingredient. Tackifying resins, plasticizers, extenders, or other ingredients may be added. Recent technology involves use of copolymers of vinyl acetate and ethylene blended with natural rubber latex. In some instances, these copolymers find use without the 15 natural rubber latex. Regardless of this modification, the resulting cold seal adhesives are supplied as aqueous materials. In use, a film of cold seal adhesive is applied on each of the substrates, in this case the halves of the sachet, that will bond together. The adhesive goes through a drying operation to remove the aqueous vehicle.
The uniqueness of cold seal adhesives is that they seal only to themselves. When a 20 substrate coated with a cold seal adhesive comes into contact with another substrate coated with the same cold seal adhesive, the bond results by using simple pressure. This differs from a heat seal adhesive that requires adhesive only on one substrate but must have a source of heat and pressure to make the bond. Nevertheless, advantageously heat seal may be applied on both sides of the seal which minimizes the use of glue on each 25 side (and thereby enables a better porosity).
The amount of pressure applied in the actual bonding process will make a considerable difference. More pressure generally equates to higher bond values. Time also can play a role with bond values, increasing somewhat after the adhesive undergoes bonding.
For the present invention the normal kinds of adhesives that are available for paper 30 sealing can be used, as long as these, after sealing, do not easily loose their adhesive properties over time. I.e., once sealed the sachet should remain sealed.
6
In one embodiment the glue that is necessary for the seal is provided only at those places where it is actually needed. This means that in the production process of the sachet advantageously a mask will be used (adhésivage a fagon) to determine the spots where the glue needs to be deposited. Such a mask will also enable a better and more 5 reliable positioning of the area on the surface of the paper that can be used for printing text and/or figures. Further, it means that overall less glue will be needed and that the porosity of the paper remains high because it will not be decreased by the glue.
In another embodiment the complete paper is one-sided covered with adhesive or glue, provided that such a one-sided cover does not impair the permeability characteristics of 10 the sachet. As can be seen from Table 1, it is possible to use glue, while maintaining a permeability according to the invention.
Covering one side of the paper with adhesive has advantages in the processing of the paper into sachets: when applying the adhesive to the paper no special care should be 15 taken that some parts of the paper surface should remain free of adhesive. Further, since there is no predetermined area for sealing, any area may be used, which means that the paper that is prepared with adhesive may be used for any type and size of sachet. Another advantage of this way of application of glue is the uniformness of the resulting paper: when the paper is rolled and stored on reels, or transported in the sachet 20 production process it has a more or less constant thickness over the whole breadth and length of the paper. This ensures better handling characteristics of the paper.
One side of the sachet, i.e. the side on which no adhesive will be applied, and which side will eventually form the outside of the sachet, may be used for printing. Any form of print may be attached to said surface, but generally the known ways of printing with 25 ink will be the most advantageous. Of course, as the skilled person will readily understand, the printing may consist of advertisements, trademarks and the like, but also for instructions for use of the sachet and an indication of the content of the sachet.
The basic form of the sachet will be rectangular, but also sachets in other forms (triangles, pyramids, etc.) may be produced. It is also possible that the sachet is in the 30 form of a stick, i.e. a cylinder of paper, closed (preferably by seals) at the top and the bottom side. Even a globular sachet or sachets in specific shapes (e.g. shapes of 7 animals, objects) may be produced. It is envisaged that the shape of the sachet can be advantageous for branding purposes or for display in shops.
One of the main advantages of the sachets according to the invention is that they are completely recyclable: no residual waste is formed by the sachet itself. This means that 5 the sachets will be a cheap and environmental friendly alternative for all plastic sachets (made from polypropylene, polyethylene, etc.) that are used nowadays for packaging of light, dry goods, even in cases where porosity of the sachet is not required. Examples of such applications are sachets for the packaging of sweets and candies, sachets (or sticks) for sugar, sachets for little toys and paper content (like stickers, stamps and collectable 10 cards).
The invention also encompasses a method for producing the sachets of the invention. The main advantage of the production process is that it can be implemented on existing machinery in paper or foil packaging production facilities.
For the production glue is applied to one side of a reel of paper. As discussed above, the 15 application of the glue can be over the total surface of the paper or it follows a mask for a predetermined pattern on the paper. The other side of the paper is left blank or is preprinted. In some cases the printing is done simultaneously with the packaging of the product. After the glue has been provided, the paper is folded in such a way that the later backside and later frontside of one sachet are put on top of each other, facing each 20 other on the glued side. Then the sachet is at least partly glued together by either hot seal or cold seal method thus forming a sort of bag. This ‘bag’ is then filled with content (powder, sugar, tea leaves or any other material to be packaged) and after filling the open side is sealed. Eventually at the moment of sealing a string or cord is co-sealed in the seal to which a label is attached (as is known from the normal tea bags).
25 In the case of production of sticks, cylinders are rolled from the paper and sealed in the longitudinal direction and at the bottom side, after which the filling can be inserted at the top side. After filling, the top side will be sealed off.
As will be clear to the skilled person it is possible in the above-described production process to produce all kinds of sizes, and shapes of the sachets of the invention.
30 8
EXAMPLE
Several paper samples have been tested in a Textest FX 3300 III air permeability tester. The tested surface of each paper sample was 20 cm2, while the applied pressure was 5 200 bar. Table 1 shows the results of 8 individual samples and the mean in L.m"2.s_1.
From these results it can be taken that the standard Natronkraft paper of 40 g/m2, which has been proven not to be usable for the present invention, has a mean air permeability of less than 0.8 L.m'2.s_1.
Material Mean Individual test values Ï [~2 |~3 [4 [5 [6 |~7 Γ~8
Tea bag paper 40 g/m2 2ÖÏ 2Ï7 188 202 195 196 2ÏÖ Ï82 217 recycled Natronkraft 40 g/m2 34)0 2.43 2.76 2.81 3.43 3.38 4.19 2.60 2.37 recycled Natronkraft 40 g/m2 L04 1.37 0.93 L3Ï 0.86 0.93 0.82 1.12 0.95 with adhesive coating
Natronkraft 40 g/m2 Ö7Ï 0.78 0.61 0.73 0.93 0.60 0.74 0.63 0.65
Natronkraft bleached 50 g/m2 (Π3 0.12 0.13 0.12 0.12 0.12 0.13 0.13 0.13 10
Claims (13)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2011107A NL2011107C2 (en) | 2012-07-05 | 2013-07-05 | Improved sealed paper sachet. |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2009135 | 2012-07-05 | ||
| NL2009135 | 2012-07-05 | ||
| NL2011107 | 2013-07-05 | ||
| NL2011107A NL2011107C2 (en) | 2012-07-05 | 2013-07-05 | Improved sealed paper sachet. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL2011107C2 true NL2011107C2 (en) | 2014-01-07 |
Family
ID=46982868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2011107A NL2011107C2 (en) | 2012-07-05 | 2013-07-05 | Improved sealed paper sachet. |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE1020895A3 (en) |
| DE (1) | DE102013011271B4 (en) |
| NL (1) | NL2011107C2 (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2313696A (en) * | 1941-03-14 | 1943-03-09 | Pneumatic Scale Corp | Tea bag and method of making the same |
| US2335159A (en) * | 1941-09-30 | 1943-11-23 | Ivers Lee Co | Adhesively sealed package |
| DE3935121A1 (en) * | 1988-10-25 | 1990-04-26 | Frank Steldermann | Bag for holding tea leaves etc. - has rectangular portion of filter fabric formed, esp. fleece made of polypropylene or viscose |
| DE9318405U1 (en) | 1993-12-01 | 1994-01-27 | Papierfabrik Schoeller & Hoesch GmbH, 76593 Gernsbach | Filter material |
| DE19719807A1 (en) | 1997-05-13 | 1998-11-19 | Bayer Ag | Heat sealable filter material with biodegradable polymers |
| DE29722628U1 (en) * | 1997-12-22 | 1999-04-15 | Klar, Paul Gerhard, Dr.-Ing., 88142 Wasserburg | Tea bags |
| DE19931402A1 (en) | 1999-07-07 | 2001-01-11 | Schoeller & Hoesch Papierfab | Biodegradable filter material for production of tea or coffee bags contains a cellulose derivative plasticized with a plasticizer, e.g. glycerol, or with a biodegradable polymer, e.g. aliphatic polyester |
| NL1015423C2 (en) * | 2000-06-13 | 2001-12-14 | Pokon & Chrysal B V | Sachet, packaging assembly, skein, web, as well as use of a sachet. |
| WO2002031263A1 (en) * | 2000-10-09 | 2002-04-18 | Dynamic Products Limited | A beverage infusion package with improved freshness and reduced dusting |
| EP1835819A1 (en) | 2005-01-14 | 2007-09-26 | Unilever N.V. | Sachets comprising plant sterol |
-
2013
- 2013-07-05 BE BE201300473A patent/BE1020895A3/en not_active IP Right Cessation
- 2013-07-05 NL NL2011107A patent/NL2011107C2/en not_active IP Right Cessation
- 2013-07-05 DE DE102013011271.0A patent/DE102013011271B4/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| BE1020895A3 (en) | 2014-07-01 |
| DE102013011271B4 (en) | 2019-05-09 |
| DE102013011271A1 (en) | 2014-01-09 |
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| Date | Code | Title | Description |
|---|---|---|---|
| MM | Lapsed because of non-payment of the annual fee |
Effective date: 20230801 |