CN110040341A - Multilayer bag - Google Patents
Multilayer bag Download PDFInfo
- Publication number
- CN110040341A CN110040341A CN201910039263.6A CN201910039263A CN110040341A CN 110040341 A CN110040341 A CN 110040341A CN 201910039263 A CN201910039263 A CN 201910039263A CN 110040341 A CN110040341 A CN 110040341A
- Authority
- CN
- China
- Prior art keywords
- layer
- paper
- bag
- ventilation area
- multilayer
- 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.)
- Granted
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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
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/04—Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/14—Valve bags, i.e. with valves for filling
-
- 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
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/01—Ventilation or drainage of bags
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to a kind of bags (10) of multilayer for bulk material, the bag has at least two material layers being made of the material of coating or uncoated paper or similar paper, the paper web (1) of bag multilayer manufactures, wherein the paper web of the multilayer includes: first layer (2), the first layer has ventilation area (4), the ventilation area has gas permeability more higher than other regions (6) of the first layer (2), with the second layer (3), the second layer has ventilation area (5), the ventilation area has gas permeability more higher than other regions (7) of the second layer (3), wherein the first layer (2) and the second layer (3) are stackedly arranged up and down, and the ventilation area (4) of the first layer (2) is arranged to the ventilation area (5 with the second layer (3) ) be staggered completely.
Description
Technical field
The present invention relates to a kind of multi-wall paper bag for bulk material, the bulk material is, for example, cement, gypsum, particle
Material, animal feed etc..
Background technique
This paper bag wide-scale distribution and especially to have herein in gypsum or cement loading be 5kg, 10kg in the market
Or the common-size in the case where 25kg.Typically, this bag has one or more paper layers, and the paper layer is compound by paper, paper
The paper of material and/or coating is formed.Additionally, it can be equipped with by other materials, such as the material layer that plastic film is constituted.
In order to fill such bag, it can be equipped with valve pipe, the valve pipe is machined into valve bottom, and the valve pipe grafting
Onto the filling adapter tube of filling facility, to be used for filling baggy fabric.Then, for example powdered or particulate bulk material is passed through into air
Stream is transported in bag.For quick and economical it is very important that air quickly escapes during filling process.Another party
Face, the bag should seal as far as possible after filling, to protect filler from external action, especially blocks moisture.In order to
The better product protection or longer product stability for realizing the filler being located in bag, in the single layer that surrounds the filler or more
Barrier layer-can be equipped in the paper of layer for example in the form of plastic film.
It has been confirmed that in the case where filler sensitivity, cannot ensure that sufficient product is protected by previously known bag
Shield or the bag in its configuration aspects are extremely complex.The example of the filler of this sensitivity is in the field of building materials
Rapid condensation product, such as gypsum or cement, however also must be prevented from the food of smell forfeiture.
From 2015/104038 A1 of WO although a kind of paper bag known, the paper bag provide sufficient product protection, so
It and is complicated in its configuration aspects, and then the manufacture for needing high cost and more expending.
Summary of the invention
Therefore, the present invention relates to the improvement of known paper bag.In particular, should realize spy by means of the improved structure of paper bag
Not economic manufacture and the good exhaust in filling, and this remains unchanged or is modified in the product protection to filler
While realize.
According to the present invention, the purpose is realized by the multi-wall paper bag with feature according to the present invention.Preferred design side
Case also hereinafter obtains.
Therefore, multilayer bag according to the present invention is made of the paper web (Papierbahn) of multilayer.The paper web packet of the multilayer
Include: first layer, the first layer have ventilation area, and the ventilation area has more higher than other regions of first layer ventilative
Property；And the second layer, the second layer have ventilation area, the ventilation area has more higher than other regions of the second layer
Gas, wherein first layer and the second layer are stackedly arranged up and down, and the ventilation area of first layer be arranged to it is saturating with the second layer
Gas region is staggered completely.
It is preferably able to propose, the theory structure and/or component of first layer and the theory structure of the second layer and/or component phase
Together.
An improvement project according to the present invention, in the case where multi-layer web, the ventilation area of first layer is in width plane
In be arranged at interval with the ventilation area of the second layer.Therefore, the ventilation area of first layer and the ventilation area of the second layer be not straight
It connects adjacent to each other, but has each other at regular intervals.The spacing can be identical on the longitudinal direction of paper web, but also can
It is enough variation.
Can propose herein, in addition at least one ventilation area and at least one with less gas permeability or absolutely not
Except other regions of gas permeability, the first layer and the second layer of multi-layer web do not have other region.In other words, therefore,
One layer and/or there are also the second layers to be only made of two different regions in terms of its gas permeability.
The ventilation area of first layer is staggered completely relative to the ventilation area of the second layer and causes in multi-layer web, first
Up and down stackedly in the set-up mode of coating, the ventilation area of corresponding layer does not have overlapping region each other for layer and the second layer.Cause
This, the ventilation area of first layer is located at less ventilative or air-locked overlying regions of the second layer, and the ventilating area of the second layer
Domain is located at below less ventilative or air-locked region of first layer.By the way that ventilation area to be arranged side by side, so that being not present two
The overlapping region of a layer of ventilation area obtains the paper web of multilayer, can be manufactured in a simple manner by the paper web of the multilayer
Particularly advantageous paper bag according to the present invention, the paper bag are particularly well vented, because big deflation area is possible, and
Good product protection is ensured by the ventilative exhaust gas region being arranged in a staggered manner simultaneously.
Evacuating air stream can flow to the other side from the side of paper web because the air stream can via one layer first
Ventilation area, the stream in paper web plane between the two layers and be next to this another layer of ventilation area penetrate flowing.
The invention also includes following situations: first layer and the second layer do not have identical width and/or do not flush ground each other
Orientation.It is preferred that proposing, the width of first layer flushes ground corresponding to the width of the second layer and/or the first layer and the second layer
Orientation.
Another improved form according to the present invention, first layer and/or the second layer ventilation area along paper web layer
Longitudinal direction continuously stretches.
This is advantageous for manufacturing the paper web of multilayer, because first layer and/or the second layer are then able to from one
During roller expansion and the procedure of processing carried out when the layer is unfolded, such as by perforation, it is capable of providing with lower
The region of gas.
According to another improvement project, first layer and/or the second layer have multiple ventilation areas separated from each other, one of them
Multiple ventilation areas of layer are preferably extended parallel to each other along the longitudinal direction of paper web, so that the bar shaped for obtaining paper web divides.
In order to which enough gas permeabilities can propose, there are multiple ventilating areas in each one layer in first layer and the second layer
Domain.Thus it is for example possible to propose, be parallel in one layer paper web stretching, extension multiple ventilation areas have to each other with another
The identical spacing in multiple ventilation areas of paper web stretching, extension is parallel in layer.The layer different across two this jagged or
There are also mazy flowing trends, and the bag made of paper web is advantageous.The quantity of the ventilation area of one layer can also wait
Quantity in another layer of ventilation area.But in basic thought of the invention also include: the quantity of the ventilation area of two layers
It is different.
Two layers of an improvement project according to the present invention, the paper web of multilayer are mutually arranged securely, and mode is for example
Are as follows: the layer is pasted or is directly pasted each other.Herein preferably, the longitudinal direction that adhesive-layer or adhesive line are parallel to paper web prolongs
It stretches.
The present invention can also improve in the following way, and first layer and/or the second layer the ventilation area is by perforating, covering
Layer leaves a blank portion and/or highly porous material is formed.
In particular, can also be executed during layer is continuously unfolded from a roller to layer with method in a simple manner
Perforation, mode are as follows: be rolled on the layer being stripped with the roller for being equipped with needle in specific width range.It is a kind of for introducing perforation
Extremely simple and easily operated approach, so as to improve layer specific region gas permeability.
It can also propose, the paper web of multilayer has outer layer and internal layer, and first layer and the are provided between outer layer and internal layer
Two layers, wherein preferably, outer layer and internal layer are made of paper.
Another improvement project according to the present invention, first layer are set up directly on the second layer.Therefore in first layer and second
Other layers are not present between layer.
One according to the present invention is advantageously improved form, first layer and/or the second layer by paper or the paper of coating, preferably by
With the paper of airtight material coating, preferably by being constituted with the paper of polyethylene coating.
Ventilation area then for example can be in the case where layer made of the paper coating, and by that will perforate, introducing is desired
It is realized in range.However it can also considered that, the area of no coating forms ventilation area.This can be carried out by following manner: first
Coating is not applied on the layer in desired region first, or if the coating has existed, again will completely
It is removed.
Advantageously, bag according to the present invention is made of the pipe of multilayer, the pipe of the multilayer is made of the paper web of multilayer.?
This, pipe can be formed by connection particularly by the join domain for pasting longitudinal seamed edge stretching, extension that two are parallel to paper web.This reality
It applies are as follows: in addition, the ventilation area of first layer is arranged to be staggered completely with the ventilation area of the second layer in the ring circumferential direction of pipe
's.
According to an improvement project, corresponding join domain include paper web longitudinally extending fringe region or close to should
Fringe region setting.It can also propose, join domain is adjacent to the fringe region at longitudinal seamed edge of paper web.
It can also propose, the join domain of paper web does not have and first layer and/or the second layer ventilation area respectively
Overlapping portion.It therefore ensures that: even if air can not be constituted no for typical fan of the invention in the join domain of paper web
Two layers are passed through in the case where palace formula flowing trend.
When filling bag according to the present invention, air can be escaped via the region for mutually staggering setting from the inside of bag,
And at the same time the inside of bag is protected from external action well.The bag closing (serration type or mazy) disposably filled
Flow channel, the flow channel allow air to flow out.Under the state that has been filled with, filler is squeezed from inside towards multiple layers,
So that the region being arranged between the ventilation area of two layers is closed due to pressure from inside.Therefore, fill the bag it
Afterwards, flow channel is closed, because layer of the internal layer outside is squeezed.Therefore can be avoided moisture be externally entering or
The aromatic substance of person's forfeiture bulk.
Optional improvement project according to the present invention, paper bag further include opposite bottom, preferably cross bottom or block
Side wall between shape bottom and bottom.Here, at least side wall is by the paper web or pipe according to one of the variations inquired into above
It is formed.But, it is also advantageous in this regard that it is rolled in the form of cross bottom or blocky bottom by the paper web of multilayer or the pipe of multilayer bottom
Formed to stacked.
It can propose, first layer and/or the second layer the coating is towards inside bag.
In addition, the bottom referred to hereinafter as valve bottom is arranged in the valve pipe for filling paper bag according to bag improvement project
In.
When according to one of the variations inquired into above filling baggy fabric, the air introduced in the filling process can be via two
Leave bag in a layer of ventilation area.But because ventilation area does not have overlapping region, place is ensured under occupied state
The protection of bulk material in bag.
Detailed description of the invention
By the following visible other details of the invention of Detailed description of the invention, advantages and features.Attached drawing is shown:
Fig. 1 is shown in the prior art for manufacturing the paper tube section of paper bag；
Fig. 2 shows the manufactures of the paper web of the multilayer for bag according to the present invention；
Fig. 3 shows the paper web section cut out, and wherein first layer is stripped from the half of the second layer；
Fig. 4 shows the pipe for manufacturing the paper bag according to the present invention being made of the paper web of multilayer；And
Fig. 5 shows paper bag according to the present invention, and wherein outer layer is torn on the front side wall of the paper bag.
Specific embodiment
Fig. 1 shows known pipe 30 from the prior art, and the pipe is for manufacturing paper bag.
Here, the paper of single layer coating is configured to pipe 30, so that generating overlapping region A.Overlapping region is herein by means of even
Continuous adhesive tape 31 is airtight to be pasted at the fringe region of inward flange with waterproof.In addition to this, it is equipped with another intermittent viscose glue
Band 32, the adhesive tape stretch in the intermediate section of overlapping portion A.It is equipped at outer peripheral fringe region another continuous viscous
Adhesive tape, to be fixed on the fringe region in the section that the inside of paper of single layer is stretched.
In internal fringe region, in viscose glue portion 31 until discrete viscose glue portion in the intermediate section of overlapping portion A
Between 32, it is equipped in ventilation area (B, the region shown in dotted line), gas permeability increases compared with other regions of paper layer.In addition,
In external fringe region, in the intermediate section of overlapping portion A in viscose glue portion 33 until between discrete viscose glue portion 32, together
Sample is equipped with ventilation area (in Fig. 1: the region equipped with oblique line).Therefore, air can be in the filling process for the bag being made out of tubes
Period is via ventilation area B, discrete viscose glue portion 32 and the ventilation area in internal fringe region (in Fig. 1: being equipped with oblique
Line) evolution outward.
Pipe 30 previously known from the prior art is in view of its multiple stickup position and ventilation area in overlay region in Fig. 1
Its manufacture view that is precisely positioned in the A of domain expends very much, wherein the paste section position must be it is continuous and or
It is intermittent.Furthermore it is desirable that, more effectively the inside of protection pipe from external action, and by increase ventilation area or will
The ventilation area is placed in the external improvement exhaust of the seam region of pipe.
Fig. 2 shows the schematic manufacturing processes of the paper web of the multilayer for bag according to the present invention.
It can be seen that the first layer 2 rolled on roller 21, the first layer are partly unfolded in the accompanying drawings.First
The section of the expansion of layer 2 is directed into herein on the first perforating roller 22, so that first layer 2 is according to length in specific width range
It is interior to be perforated.Punched areas or also ventilation area 4 are with the higher gas permeability in imperforated region 6 than first layer 2.
It can also be seen that be the second layer 3 rolled on roller 23, the second layer is equally partly unfolded.It is similar to
First layer 2, the part of the expansion of the second layer 3 are also channeled on another perforating roller 24, so that here, the also basis of the second layer 3
Length is perforated in specific width range.The punched areas of the second layer 3 or also ventilation area 5 are with than the second layer 3
The higher gas permeability in imperforated region 7.
It is learnt from the lower section of attached drawing, the second layer 3 is arranged on first layer 2.Here, the ventilation area 4 of first layer 2
It is not Chong Die with the ventilation area 5 of the second layer 3.The ventilation area is not also directly adjacent to each other, but in the width direction of paper web
On each other have certain spacing.This spacing stretched in the direction of the width is unessential for the present invention, but
It is to improve the present invention.
Therefore, it shows in the lower section of attached drawing (in the lower section with the coefficient perforating roller 23 of the second layer 3) for shape
At the paper layer 1 of the multilayer according to the present invention of bag according to the present invention.
Fig. 3 shows the section of multi-layer web 1 cut out, and wherein the second layer 3 is stripped from the half of first layer 2.For this
For the technical staff of field it is clear that for better machinability, first layer 2 and the second layer 3 can be consolidated against each other
It is fixed, such as by placement affixed points or paste line.The affixed points paste line preferably in the marginal zone of longitudinal seamed edge of paper web
It is stretched in domain, or, as so-called lateral viscose glue portion, the longitudinal direction transverse to paper web is close to extending transversely in the accompanying drawings
Seamed edge stretching, extension is cut, the cutting seamed edge is set for the pipe section that the paper web 1 formed by multilayer is constituted.
Here, in the accompanying drawings dotted line show in order to create cross bottom bag needed for bending seamed edge.Furthermore it needs
It is that the fringe region of vertical stretching in the accompanying drawings is connected to each other or pastes herein.
Also in Fig. 3 it is seen that, the second layer 3 is placed on first layer 2, so that multiple ventilation areas 5 of the second layer 3 are not
It is Chong Die with the ventilation area 4 of first layer 2.The ventilation area 4,5 of one layer 2,3 is placed on the " impermeable of another layer 3,2 by entire surface
On gas " region 6,7.
Fig. 4 is to illustrate to illustrate the pipe 8 made of the section of the paper web 1 of multilayer.
Along the ring week of pipe 8, air cannot directly be flowed out from inside with linearly radially outward stretching.This is because as follows
Reason and be prohibited because the ventilation area 5 of internal (second) layer 3 is covered by air-locked region 6 of external (first) layer 2
Lid.Therefore, the flow direction of the air flowed from inside to outside must use serration type or mazy shape, so as to from inside to
Up to outside.It only can be realized in this way, ventilation area 5 and external (first) layer via internal (second) layer 3
Ventilation area 4 reach outside.
Compared with the prior art as shown in Figure 1, Guan Qi configuration aspects according to the present invention are less complex
, and then be also lower cost in its manufacture view.In addition, passing through ventilation area 4,5 directly not adjacent to each other for internal
It preferably protects, against external action.
Fig. 5 shows the perspective view of bag 10, and the bag is constituted by pipe 8 (referring to fig. 4) or by the segment of the paper web 1 of multilayer.
Front side wall 12 is torn in this section, so as to identify the structure of side wall 12.As can be seen, external layer (2) is ventilative
Region (4) and the ventilation area (5) of internal layer (3) are arranged with being staggered, to generate above-mentioned flowing and coverage condition.
There are two opposite bottom (11 and 13) and the side walls (12) being disposed between for 10 tool of bag.The bottom structure on top
As valve bottom (13), the valve pipe (15) for filling the bag is processed in the valve bottom.
Claims (14)
1. a kind of bag (10) of multilayer for bulk material, the bag have at least two by coating or uncoated paper or
The material layer that the material of similar paper is constituted, the paper web (1) of bag multilayer manufactures, wherein the paper web of the multilayer includes:
First layer (2), the first layer have ventilation area (4), and the ventilation area has more other than the first layer (2)
Region (6) higher gas permeability, and
The second layer (3), the second layer have ventilation area (5), and the ventilation area has more other than the second layer (3)
Region (7) higher gas permeability, wherein
The first layer (2) and the second layer (3) are stackedly arranged up and down, and
What the ventilation area (4) of the first layer (2) was arranged to be staggered completely with the ventilation area (5) of the second layer (3).
2. paper bag (10) according to claim 1, wherein in the paper web of the multilayer, the first layer (2) and/or
It is continuously stretched along the longitudinal direction of the layer of the paper web (1) ventilation area (4,5) of the second layer (3).
3. paper bag (10) according to any one of the preceding claims, wherein in the paper web (1) of the multilayer, described
One layer (2) and/or the second layer (3) have multiple ventilation areas (4,5) separated from each other, one of layer (2,3) it is more
Longitudinal direction of a ventilation area (4,5) preferably along the paper web (1) extends parallel to each other.
4. paper bag (10) according to any one of the preceding claims, wherein in the paper web (1) of the multilayer, described
It is left a blank portion and/or highly porous by perforation, coating one layer (2) and/or the second layer (3) ventilation area (4,5)
Material is formed.
5. paper bag (10) according to any one of the preceding claims, wherein the paper bag also has outer layer and internal layer,
The first layer (2) and the second layer (3) are provided between the outer layer and internal layer, wherein preferably, the outer layer and institute
Internal layer is stated to be made of paper.
6. paper bag (10) according to any one of the preceding claims, wherein in the paper web (1) of the multilayer, described
It is set up directly on the second layer (3) for one layer (2).
7. paper bag (10) according to any one of the preceding claims, wherein in the paper web (1) of the multilayer, described
One layer (2) and/or the second layer (3) by coating paper, preferably by the paper with gastight material coating, preferably by being covered with polyethylene
The paper of layer is constituted.
8. paper bag (10) according to any one of the preceding claims, the paper bag is made of the pipe (8) of multilayer, described more
The pipe of layer is shaped by the paper web (1) of the multilayer, wherein the pipe (8) is parallel to institute by connection, particularly by pasting two
The join domain for stating longitudinal seamed edge stretching, extension of paper web (1) is formed, preferably as follows, so that in the ring Zhou Fang of the pipe (8)
Upwards, the ventilation area of the first layer (2) is also configured to be staggered completely with the ventilation area of the second layer (3).
9. paper bag (10) according to claim 8, wherein corresponding join domain includes the paper in the pipe (8)
The longitudinally extending fringe region of width (1) is arranged close to the fringe region.
10. paper bag (10) according to claim 8 or claim 9, wherein in the pipe (8), the join domain of the paper web (1)
Do not have the overlapping portion with the ventilation area of the first layer (2) the and/or described second layer (3) respectively.
11. paper bag (10) according to any one of the preceding claims, the paper bag also include
Two opposite bottoms (11,13), the bottom preferably in the form of cross bottom or blocky bottom collapsiblely
It is formed, and
The side wall (12) of the bottom (11,13) is connected, wherein
At least described side wall (12) is formed by the paper web (1) or the pipe (8) of multilayer.
12. according to paper bag described in the next item up claim (10), wherein the bottom (11,13) are equally by the paper of multilayer
Width (1) or the pipe (8) are formed collapsiblely by way of cross bottom or blocky bottom.
13. paper bag (10) according to claim 11 or 12, wherein the first layer (2) and/or the second layer (3)
Coating towards inside bag.
14. paper bag described in any one of 1 to 13 (10) according to claim 1, wherein in the bottom for being configured to valve bottom (13)
(13) the valve pipe (15) for filling the paper bag (10) is provided in.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202018100246.5U DE202018100246U1 (en) | 2018-01-17 | 2018-01-17 | Multi-ply bag |
| DE202018100246.5 | 2018-01-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110040341A true CN110040341A (en) | 2019-07-23 |
| CN110040341B CN110040341B (en) | 2022-06-07 |
Family
ID=66548561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910039263.6A Active CN110040341B (en) | 2018-01-17 | 2019-01-16 | Multi-layer bag |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110040341B (en) |
| DE (2) | DE202018100246U1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202021106846U1 (en) | 2021-12-16 | 2023-03-28 | Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh | Multi-layer paper sack |
| IT202200010331A1 (en) * | 2022-05-18 | 2023-11-18 | Cielle Imballaggi Di Tommaso Loreto S R L | IMPROVED BAG FOR PACKAGING POWDERED PRODUCTS |
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| CN201619755U (en) * | 2010-01-04 | 2010-11-03 | 获嘉县青岭包装有限公司 | Valve port packing bag |
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| DE565770C (en) * | 1932-12-07 | Bertram Schaefer | Paper bag or sack consisting of several layers | |
| US2593328A (en) * | 1948-07-13 | 1952-04-15 | John W Meaker | Perforated multiple ply bag |
| DE1809578A1 (en) * | 1968-11-18 | 1970-07-30 | Windmoeller & Hoelscher | Sack or pouch made of plastic film with ventilation and / or ventilation through perforations |
| NL8400578A (en) * | 1984-02-24 | 1985-09-16 | Wavin Bv | PLASTIC BAG WITH PERFORATIONS APPLIED IN THE BAG FILM WALL BY LASER RADIATION AND PLASTIC FOIL SUITABLE FOR USE WITH SUCH A PLASTIC BAG. |
| IL168044A0 (en) * | 2005-04-14 | 2009-02-11 | Mibaplast Ltd | Bag for retaining warmth and crispiness of food items and process therefor |
| DE102013000038A1 (en) * | 2013-01-03 | 2014-07-03 | Mondi Ag | Bag for transporting filling material from manufacturer to user, has plastic wall that is partially double-layered with two adjacent layers, where layers are lifted from each other in area of perforations due to overpressure |
| DE202014000194U1 (en) | 2014-01-10 | 2015-04-14 | Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh | paper bags |
-
2018
- 2018-01-17 DE DE202018100246.5U patent/DE202018100246U1/en active Active
-
2019
- 2019-01-07 DE DE102019100193.5A patent/DE102019100193A1/en active Pending
- 2019-01-16 CN CN201910039263.6A patent/CN110040341B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2025894A (en) * | 1978-06-16 | 1980-01-30 | Perrier Heinz Sa | Mushroom spawn bag |
| CN201619755U (en) * | 2010-01-04 | 2010-11-03 | 获嘉县青岭包装有限公司 | Valve port packing bag |
| CN201729384U (en) * | 2010-07-16 | 2011-02-02 | 江苏大华科技产业有限公司 | Oxygen absorbent packaging material |
| CN204642525U (en) * | 2015-05-13 | 2015-09-16 | 天津大宇包装制品有限公司 | Partition type ventilating packaging bag |
| CN206537665U (en) * | 2016-12-30 | 2017-10-03 | 上海艾录包装股份有限公司 | A kind of high exhaust and the new structure of protection against the tide |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102019100193A1 (en) | 2019-07-18 |
| CN110040341B (en) | 2022-06-07 |
| DE202018100246U1 (en) | 2019-04-30 |
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