CN101391670A - Packaging bag with tearing aid - Google Patents
Packaging bag with tearing aid Download PDFInfo
- Publication number
- CN101391670A CN101391670A CNA200810149239XA CN200810149239A CN101391670A CN 101391670 A CN101391670 A CN 101391670A CN A200810149239X A CNA200810149239X A CN A200810149239XA CN 200810149239 A CN200810149239 A CN 200810149239A CN 101391670 A CN101391670 A CN 101391670A
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- China
- Prior art keywords
- line
- packaging bag
- breach
- weakened
- weakened line
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- 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.)
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Classifications
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- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/008—Standing pouches, i.e. "Standbeutel"
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- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5805—Opening or contents-removing devices added or incorporated during package manufacture for tearing a side strip parallel and next to the edge, e.g. by means of a line of weakness
Abstract
The invention relates to a packaging bag with a tearing aid, with which it is reliably provided that the packaging bag is opened in a defined way by manual tearing by the user, so that no packaging contents are lost. The packaging bag is essentially made from a front and a back, which are connected to each other in their edge regions with a material fit and which thus forms a joint edge, in which an opening notch is formed, whose center line intersects two weakened lines at an intersection point starting at a distance from the notch tip. These weakened lines each extend across the width of the front and the back. The direction of the weakened line at the intersection point encloses, with the center line, a tear angle greater than 0 DEG and less than 90 DEG .
Description
Technical field
The present invention relates to a kind of for example paper, plastics and/or metal packaging bag with tearing aid of packing of the single or multiple lift by flexibility, described tearing aid makes it possible to achieve the tearing of regulation of packaging bag.
Background technology
The essentiality of tearing of the regulation of packaging bag is a particular importance, when connection with wrapping of piece for example is liquid, granulated material or a large amount of granule, thereby when the uncontrolled unlatching of packaging bag connection with wrapping of piece may the part or even spill fully, and people set out thus, be the customer without instrument, but tear realize to open by hand.
The packing size and the packing of the packaging bag of same kind are to determine according to the type and the quantity of connection with wrapping of piece, and can be very different.Though these packaging bag shape differences all are meant the packaging bag with front and back on wide significance, their materials in its fringe region are connected to each other sealedly.This connection can the part of edge region on the folding line that produces of blank by the folding bag pack provided already.The other part of fringe region is by bonding or welding on predetermined border width be connected to each other (next being called the trip edge).
When perpendicular positioning or fixed packet pack, this customer is obtained enough promptings by the printing printed words in the packaging bag, promptly in the upper area of bag volume, constitute a cavity that does not contain connection with wrapping of piece.Front and back is against each other by being compacted to small part jointly in this zone.In order when tearing, there not to be connection with wrapping of piece to spill, so the tear line that is constituted should from the fringe region of cavity adjacency, only in the zone of defining cavity of front and back, extend.Yet most of materials are not always torn in desired region under the situation of tearing aid not having.
Pointed out the example of packaging bag of the same type below.
For packing for example cement of building materials, usually use the double-ply packing, its by one towards sack in-to-in plastic film and one towards sack the outside, the very anti-firm layer made of paper that tears forms, the purpose of described plastic film prevents that just connection with wrapping of piece from making moist, described layer made of paper is the own wt of withstand packaging article safely then, it also may surpass 30kg, also will bear traffic load.This packaged form is meant the representative type bag form at this, is determined by top, bottom and two sides.Side, common bottom in addition are made of folding line at this.The top is meant the trip edge, and its border width generally is about 1-4cm.
For the packing in the food industry, weight is littler, but the requirement of health and high-durability is in space of top prominence for connection with wrapping of piece.For the packing of beverage, majority will use three layers packing especially, and its paper or plastic layer, a metal level and in-to-in plastic layer by the printing of an outside constitutes.General rectangular paper bag normally will bond along all edges or weld mutually, that is to say, this packing has the trip edge of annular, and its border width generally is about 2-8mm.
For example as being used for the external packing of the candy of packing separately, packing only have single layer plastic film usually, and it for example makes flexible pipe, has following trip edge and last trip edge.
In principle, packing are made by the form of breadth or cambered surface, and make single blank in batch.Make the folding or preforming of these blanks then, and the edge that overlaps each other is welded to each other or bonds together, thereby form packaging bag, it is complete closed after can.
Directly overlap the to each other on predetermined border width by packing and to be connected with each other, thereby always exist the trip edge.This trip edge can be meant the closed edge of annular, also can be interrupted by folding line.
By repeatedly known a kind of packaging bag in the practice, it has the unlatching breach of I shape or V-arrangement on the trip edge of side.Open for realizing, can be on the egress edge of packaging bag catch the unlatching breach, and rip from the two sides.Crackle is importing on the breach direction and should pass on the packing on the breach direction and propagate, however this can not take place in practice, when crackle is not in that this side up when importing.
Also known in practice such solution, i.e. the front of packaging bag and/or the width at the back side are provided with weakened line, though can guide crack propagation by it, at the very difficult crackle that imports of the section start of weakened line.
Add and open breach and, seem to combine two advantages of known solutions from practice so far through to the weakened line of opening the breach end.But this is difficult to technically realize in the batch manufacturing of industry, because the two can not carry out in an operation, must accurately locatees towards weakened line but open breach.
Do not determine such solution in the prior art, can combine the unlatching breach in the fringe region with along the weakened line that guides in the width of packaging bag.
In practice, can only be in packaging bag just can add weakened line before the folding or moulding.Preferably mode is, is divided into before the blank that is used for packaging bag at material web, just weakened line is added on the material web.Weakened line is meant that the material of part is cut apart, partly material is removed or added impression along the line tracking of expecting weakened line.
Partly to cut apart can be a kind of degree of depth cutting of incomplete separating materials to material, for example makes by cutter or jewel hole machine.The material damage of part can be meant a kind of notch that not exclusively separates, or the perforation lines in aperture that partially or completely penetrates or crack or crack line, or their combination.
In practice, can only just can add the unlatching breach after welding or bond edge zone, the degree of depth of breach does not allow the border width greater than the trip edge that constitutes.In order to reach described requirement, this method step must be controlled by the position of weakened line.The mechanism that surveys the weakened line position must be arranged for this reason, so that the signal that control can be sent thus, as realizing packaging bag and be used to open the controlling quantity of the location positioning between the machining tool of breach that this bothers very much.
Summary of the invention
The objective of the invention is, a kind of packaging bag with the front and back that links to each other by the trip edge is provided, constitute a unlatching breach and be used to introduce crackle in this packaging bag, this packaging bag also has the weakened line that is used for guiding crack propagation.
The packaging bag of the feature of this purpose by having claim 1 is achieved.
Favourable improvement has been described in the dependent claims.
Description of drawings
Below schematically describe the present invention in detail by accompanying drawing.
Wherein:
The birds-eye view of Fig. 1 a first embodiment;
Fig. 1 b material web has the blank that is used for first embodiment;
The partial view of Fig. 1 c Fig. 1 a;
Fig. 2 second embodiment;
Fig. 3 the 3rd embodiment;
Fig. 4 the 4th embodiment;
Fig. 5 the 5th embodiment;
Fig. 6 the 6th embodiment;
Fig. 7 the 7th embodiment;
Fig. 8 has the packaging bag at the triangular face and the back side;
Fig. 9 has the packaging bag of additional bottom part;
Figure 10 has the packaging bag of different front and backs.
The specific embodiment
As by in the practice the known package bag, having positive 1 and the back side 2 by packaging bag of the present invention, is to be welded to each other or bonding to small part in their edge region.These fringe regions bonded to one another or weld together constitute the trip edge 3 of predetermined border width.
Pressing the birds-eye view of first embodiment on positive 1 of packaging bag of the present invention shown in Fig. 1 a.Front 1 has the shape of rectangle with the back side 2 that is positioned at its rear portion, and is connected with each other by the trip edge 3 of annular.
At the blank that is used for packaging bag shown in Fig. 1 b 4 preferably from a width of cloth packing customized cut-off and have the double-width of packaging bag.By folding along medium line, front 1 and the back side 2 mulched grounds are overlapped.By one in folding two sides of folding line formation that produce.The packaging bag that provides one can load just is provided for another side and following all coupling together.For the whole impression that reaches symmetry or in order to allow better extracting the around the packaging bag, yet fringe region also constitutes trip edge 3 along folding line usually.
It will be clear that for the professional blank 4 also can constitute like this, promptly positive 1 and the back side 2 by following or also can constitute and cover by the top.In the scheme of back, load from below then.
Two side views neither force to want rectangular or identical.Therefore except Fig. 1 to 7, at least to tear in the zone be rectangle to the shape of packaging bag in these accompanying drawings, Fig. 8 shows a kind of packaging bag with two identical triangle sides, and Fig. 9 shows has two identical trapezoidal sides and the 3rd packaging bag that constitutes the circular face of bottom.In the packaging bag of pressing Figure 10, the front is trapezoidal, and the back side is rectangle.The 3rd surface that constitutes the bottom provides compensation to the edge of the different length of front and back.
All embodiment by packaging bag of the present invention interosculate, that is:
Opening breach 5 and weakened line 6 tearing aid that constitutes with described mode and method, is basis of the present invention.
The special benefits of this tearing aid is that its manufacturing is simple.It can open breach 5 and weakened line 6 with the defined terms manufacturing technically simply, does not need accurately to align with the position of predetermined weakened line 6 because open breach 5.When unlatching breach 5 was positioned on the sack top 10, it can depart from the nominal position with respect to weakened line 6 greatly, and can very big influence not arranged to the behavior of tearing especially.Figure 8 illustrates the position deviation of permission.
As known from practice, by with the bifurcated in the zone of unlatching breach 5 adjacency, via the top importing crackle of breach.Crackle intersects with weakened line 6 on joining 8 by the present invention until crackle in the top front 1 and the back side 2 that propagates into packaging bag uncontrollably of breach.Exactly, the crackle of propagation just on the material bonded assembly end at the front 1 and the back side 2, is divided into two crackles when leaving trip edge 3.Because these two crackles extend uncontrollably, they also may intersect on the different joining 8 with on the weakened line 6.But in order description of the invention not to be made unnecessary complexity, should only say a crackle below, it intersects in joining 8 and weakened line 6 from the breach top.
Set out thus, the propagation of crackle is propagated along weakened line 6, and promptly except that can ignoring the short and small path of not remembering, packaging bag is divided into sack bottom 9 and sack top 10 by as prescribed ground.Defiber has been determined the unlatching edge of sack bottom 9.The line of the weakened line 6 by selected formation defiber distributes and can be configured to pour out in an advantageous manner or flow out the unlatching edge of connection with wrapping of piece.
It must be identical that the line of weakened line 6 is distributed on positive 1 with not needing on 2 overleaf.For the front 1 or the back side 2, it must be identical that interval a also need not with joining 8.But in order not make description of the invention make unnecessary complexity, should distribute from the line that overlaps, its can cause positive 1 with the back side 2 on interval a all identical with joining 8.It is favourable that identical line distributes for tearing characteristic, because two weakened line 6 should be come separately with the power of tearing that applies simultaneously.
The several favourable parameter that shows below by packaging bag of the present invention changes.
Basically, the line of opening location, opening angle, the degree of depth, the weakened line 6 of breach 5 distribute and structure, tear angle α and at interval a can design inequalityly.
The opening angle of opening breach 5 only has such meaning, promptly can open breach 5 from visually seeing better when opening angle is big.Open breach 5 in order to realize its function, also can be defined in narrow slit.
Opening the degree of depth of breach 5 must select like this, i.e. the top trip edge 3 that also is arranged in fully of breach.For opening breach 5, its medium line 7 vertically intersects on the seamed edge of trip edge 3, that is to say, opens the border width of the degree of depth of breach 5 less than trip edge 3.Yet have the degree of depth like this at least but open breach 5, the power of tearing that the joining 8 of packing on weakened line 6 can be utilized measured separately.
For tearing characteristic, tearing angle α should be as far as possible little.Though when tearing angle α when big, can improve the safety that crackle and weakened line 6 intersect, tear angle α than hour, it is more little to tear angle α, the component of then tearing the aligning weakened line 6 of power will be big more.Therefore tearing the angle preferably should be greater than 10 °, less than 45 °.
A should be as far as possible little at interval.Certainly will consider at this that if it selects too smallly, the offset of then opening between breach 5 and the nominal position may cause, medium line 7 intersects with specified line in opening breach 5.Then just can not run into weakened line 6 from the crackle of the top expansion of breach.
Weakened line 6 can by various known, make along an enforceable Material weakening of line.Weakened line 6 can be meant especially:
Continuous line of cut, it has fixed or changed depth of cut;
The instrument that generally is used for material separation, material removal or material modification all can be used as fabrication tool.Laser is suitable especially.Can be the suitable optical maser wavelength of various package materials selection, the material of laser parameter adaptive expectation be weakened and the transformable guiding (for example can pass through mechanical arm or scanner) of laser beam, thereby make laser become predetermined instrument and be the preferable configuration of weakened line 6 by the weakened line that laser is made.
The line distribution of weakened line 6 preferably constitutes straight line, bending or curve, and wherein the direction change is continual as far as possible.
In first embodiment of the packaging bag shown in Fig. 1 a-1c, the line that weakened line 6 has a bending distributes, and it is corresponding to three limits of the perimeter line of antiparallelogram.Open breach 5 and be arranged in the trip edge 3 of a side, wherein medium line 7 is vertical with this side.The line distribution arrangement of weakened line 6 joining 8 places and this side and also with medium line 7 surround greater than 0 ° and less than 90 ° tear angle α, for example about 45 ° at this.At interval a selects like this, promptly by open crackle that breach 5 imports in the trip edge 3 outside crossing with weakened line 6.If a selection is too much at interval, such danger is then arranged, promptly the crackle of propagating forward just propagated in the sack bottom 9 before intersecting with weakened line 6 uncontrollably, therefore no longer may realize the unlatching of stipulating.
Among second embodiment, dwindled a at interval shown in figure 2, so that improve safety, in fact the feasible crackle that imports intersects with weakened line 6 and can be as extending forward uncontrollably before.Joining 8 also is positioned at the inside of trip edge 3.Therefore, the crackle of propagating forward also can be in the trip edge 3 inside begin.Unexpected direction changed in Fig. 1 a, the line of weakened line 6 distributed because the rounding that the line of dihedral distributes has continual angle variation.
Compare with two embodiment that illustrated, the difference of the 3rd embodiment shown in Figure 3 and the embodiment of above-mentioned two descriptions is, opens breach 5 and is not arranged on the inside of sack bottom 9, and be arranged in the sack top 10.Its advantage is, the crackle of propagating forward from the top beginning of breach of opening breach 5 does not rely on fully all under any circumstance that a ground and weakened line 6 are crossing at interval.In this 3rd embodiment, the fringe region of side is not to constitute trip edge 3, but only defines by folding line.Packaging bag at this along the sealing on 2 overleaf of its length, as shown in.Open breach 5 and be positioned at trip edge 3, with the top adjacency of packaging bag.
The line that the 4th embodiment shown in Figure 4 shows the sinusoidal shape of weakened line 6 distributes.For this reason, the unlatching edge of sack bottom 9 (sack opening) constitutes like this, and promptly sinusoidal the lowest point constitutes chute on the front 1 and the back side 2.Because this chute is accurately opposed on the periphery of sack opening, then the connection with wrapping of piece of liquid is only by an emptying in the chute, as long as this chute is positioned at the darkest place.
Among the 5th embodiment shown in Figure 5, it also is sinusoidal line that the line of weakened line 6 distributes, its with Fig. 4 in compare only mobile half cycle, so weakened line 6 extends into a lowest point towards side.The lowest point, particularly with open breach 5 opposed the lowest point and also can play chute at this.Open breach 5 in this also processes trip edge 3 at the adjacency side, and still be arranged in sack top 10.This embodiment is particularly advantageous, because it has realized the stability that crackle and weakened line 6 intersects by the unlatching breach 5 in the sack top 9, makes and can comfortablely pour out connection with wrapping of piece and the user can begin packaging bag is torn from the side in the mode of custom.What sine-shaped line distributed or other periodic line distributes is also advantageous in that it can for example be realized by laser scanner simply.
In Fig. 6,7 and 8 each embodiment has been shown, the line of weakened line 6 distributes and is equivalent to straight line.Though therefore the medium line 7 of weakened line 6 and unlatching breach 5 is being torn angle α downcrossings, among the 6th embodiment shown in Figure 6, open breach 5 and be arranged on the corner, wherein trip edge 3 is in this limited widely formation.
In Fig. 7, among disclosed the 7th embodiment, open breach 5 and favour the side setting, that is to say that medium line 7 is not vertical with side.
In the embodiment show in figure 8, as what illustrated, the front 1 and the back side 2 are leg-of-mutton surfaces, so one crossing with the weakened line 6 of guiding as the crow flies on the width of packaging bag to tear angle α with the vertically disposed unlatching breach 5 of side.Tearing angle α and just in time be equivalent to leg-of-mutton wedge angle angle in this scheme, is 35 ° at this.It is more little to tear angle α, and then crackle guides to weakened line 6 better.
List of numerals
1 front
2 back sides
3 trip edges
4 blanks
5 open breach
6 weaken line
7 open the medium line of breach
8 joinings
9 sack bottoms
10 sack tops
α tears the angle
The a interval
Claims (11)
1. the packaging bag that has tearing aid, have a front (1) and a back side (2), described front and back at least in part in its fringe region material be connected to each other sealedly, determine the trip edge (3) of predetermined border width thus, it is characterized in that, tearing aid is made of unlatching breach (5) and two weakened line (6) that are formed in the trip edge (3), described weakened line on the width of packaging bag one predetermined tear in the zone respectively to go up in positive (1) and the back side (2) extend and packaging bag be divided into sack top (9) and sack bottom (10), and the medium line (7) of opening breach (5) with one greater than 0 ° and less than 90 ° tear angle (α) in the outside of opening breach (5) with one with the top interval (a) of breach a joining (8) locate and weakened line (6) crossing.
2. by the described packaging bag of claim 1, it is characterized in that, positive (1) and the back side (2) has a rectangular shape at least in tearing the zone, and opening breach (5) is formed on one of them side, the medium line (7) of wherein opening breach (5) extends perpendicular to this side, and the direction that distributes of the line of weakened line (6) is located to surround one greater than 0 ° and less than 90 ° angle with this side in joining (8).
3. by the described packaging bag of claim 2, it is characterized in that it is the straight line of bending that the line of weakened line (6) distributes.
4. by the described packaging bag of claim 2, it is characterized in that it is sine curve that the line of weakened line (6) distributes.
5. by the described packaging bag of claim 1, it is characterized in that, positive (1) and the back side (2) has a rectangular shape at least in tearing the zone, and opening breach (5) is formed on one of them side, wherein open the medium line (7) of breach (5) with respect to this side with one greater than 0 ° and extend less than 90 ° angle, and the line of weakened line (6) to distribute be straight line.
6. by the described packaging bag of claim 1, it is characterized in that, positive (1) and the back side (2) has the shape of an equilateral triangle at least in tearing the zone, and opening breach (5) is formed on one of them side, the medium line (7) of wherein opening breach (5) extends perpendicular to this side, and the line distribution arrangement of weakened line (6) is located to surround one greater than 0 ° and less than 90 ° angle with this side in joining (8).
7. by the described packaging bag of claim 1, it is characterized in that, positive (1) and the back side (2) has the shape of an equilateral triangle at least in tearing the zone, and opening breach (5) is formed on one of them side, wherein open the medium line (7) of breach (5) with respect to this side with one greater than 0 ° and extend less than 90 ° angle, and the line of weakened line (6) to distribute be straight line.
8. by the arbitrary described packaging bag of claim 1 to 7, it is characterized in that, open breach (5) and be arranged in the sack top (10).
9. by the arbitrary described packaging bag of claim 1 to 8, it is characterized in that joining (8) is positioned at the inside of trip edge (3).
10. by the arbitrary described packaging bag of claim 1 to 9, it is characterized in that, tear angle (α) greater than 10 ° and less than 45 °.
11. the arbitrary described packaging bag by claim 1 to 10 is characterized in that weakened line (6) is the line made from laser.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007044829.7 | 2007-09-18 | ||
| DE102007044829A DE102007044829B4 (en) | 2007-09-18 | 2007-09-18 | Packaging bag with tear-open |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101391670A true CN101391670A (en) | 2009-03-25 |
Family
ID=40348668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810149239XA Pending CN101391670A (en) | 2007-09-18 | 2008-09-17 | Packaging bag with tearing aid |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20090074333A1 (en) |
| CN (1) | CN101391670A (en) |
| DE (1) | DE102007044829B4 (en) |
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| US5348399A (en) * | 1992-12-23 | 1994-09-20 | Dematteis Robert B | Plastic bags with waveform edge configurations |
| DE19924428A1 (en) * | 1999-05-28 | 2000-12-07 | 4P Verpackungen Ronsberg Gmbh | Process for producing a packaging |
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| US6845598B1 (en) * | 2003-12-19 | 2005-01-25 | Reynolds Consumer Products, Inc. | Top filled reclosable package and method for forming and filling the same |
-
2007
- 2007-09-18 DE DE102007044829A patent/DE102007044829B4/en not_active Expired - Fee Related
-
2008
- 2008-09-11 US US12/208,472 patent/US20090074333A1/en not_active Abandoned
- 2008-09-17 CN CNA200810149239XA patent/CN101391670A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102145780A (en) * | 2010-02-09 | 2011-08-10 | 莫诺索尔克斯有限公司 | Method for guided tearing of pouch laminate to enable product removal |
| CN102145780B (en) * | 2010-02-09 | 2016-08-10 | 莫诺索尔克斯有限公司 | Peelable packaging containing dosage form and for the method forming peelable packaging |
| CN108557238A (en) * | 2018-05-11 | 2018-09-21 | 南京理工大学 | A kind of triangle flavor pack facilitating flavor adjustment size |
| RU2767212C1 (en) * | 2020-01-23 | 2022-03-16 | Херберт Оспельт Анштальт | Thixotropic product package |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090074333A1 (en) | 2009-03-19 |
| DE102007044829B4 (en) | 2011-05-26 |
| DE102007044829A1 (en) | 2009-03-19 |
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Open date: 20090325 |