CN110271760A - A kind of bag filter and preparation method thereof of high throughput slot - Google Patents
A kind of bag filter and preparation method thereof of high throughput slot Download PDFInfo
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- CN110271760A CN110271760A CN201910547135.2A CN201910547135A CN110271760A CN 110271760 A CN110271760 A CN 110271760A CN 201910547135 A CN201910547135 A CN 201910547135A CN 110271760 A CN110271760 A CN 110271760A
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- bag body
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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
- B65D33/00—Details of, or accessories for, sacks or bags
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention provides a kind of bag filters and preparation method thereof of high-throughput slot, it is related to biodialysis equipment technical field, the bag filter includes the bag body in bar shaped tubulose, bag body it is open at one end, the other end along bag body the laterally folded sealing of width direction, bag body is longitudinal folding in the longitudinal direction and forms the folding zone of intersection with laterally folded sealing part, folds the zone of intersection and is fastened by stickum and is sealed and secondary fixation by the glue stick of hot melt package stickum.Production method is that the vertical folding of at least one cross one is carried out to bag body, and a laterally folded end closure by bag body, the longitudinal folding width for making bag body narrows, and is wound fixation using adhesive tape, wraps up adhesive tape with hot-melt object；Bag filter sealing end diameter is much smaller than bag filter cross-sectional width, has better ductility, the space occupied is smaller, and cost is lower；Production method is easy to operate, can make manually.
Description
Technical field
The present invention relates to biodialysis equipment technical fields, more particularly, to the bag filter and its system of a kind of high-throughput slot
Make method.
Background technique
Bag filter is usually the bag-like container made of semi-permeable membrane, in the preparation process of large biological molecule, except desalt, it is few
The technology of dialysis will be used when amount organic solvent, biological micromolecule impurity and concentrating sample.
Have more than 100 years so far from Thomas Graham invention dialysis process in 1861.Dialysis has become biochemistry
One of most easy most common separating and purifying technology in laboratory.In the preparation process of large biological molecule, desalination, except a small amount of organic
Solvent, removing biological micromolecule impurity and concentrating sample etc. will use the technology of dialysis.Dialysis is only needed using dedicated half
Permeable membrane can be completed, usually semi-permeable membrane is made it is bag-shaped, by large biological molecule sample solution be placed in bag in, bag filter is immersed
In water or buffer, the large biological molecule of the macromolecule in sample solution is trapped in bag, and salt and small-molecule substance are not
Outside disconnected diffusion dialysis to bag, until the concentration on both sides reaches balance inside and outside bag.It is retained in the sample not given in bag filter
Product solution is known as " retaining liquid ", and the solution of bag (film) outside is known as " diffusate " or " dialyzate "；The power of dialysis is diffusion pressure, is expanded
Scattered pressure is formed by the concentration gradient on transmembrane both sides, and the speed of dialysis is inversely proportional to the thickness of film, be proportional to be dialysed it is small
The concentration gradient on molecule solute both sides inside and outside film, is also proportional to the area of film.
At present during being dialysed, dialysis membrane or bag filter are generallyd use, but bag filter currently on the market,
What it was generallyd use is bar shaped bag open at one end closed at one end, generally has the shortcomings that ductility is poor；Specifically, existing
Bag filter be laminated structure after tiling, and to avoid obscuring between bag filter, using the side of tiling when storage transport
Formula, it is larger to allow for its space occupied, when in use, especially progress microarray dialysis or with different size of centrifuge tube
With the use of when, conventional bag filter needs the size specifically for centrifuge tube or Dialysis container due to the limitation of specification
Bag filter with special size, allow for operation it is more complicated, cost is higher；Therefore need one kind is at low cost to operate and prolong well
The high high flux hemodialysis bag of malleability.
Summary of the invention
The purpose of the present invention is to provide a kind of bag filters and preparation method thereof of high-throughput slot, to solve the prior art
In bag filter in the market generally have the shortcomings that the technical issues of ductility is poor, provide a kind of high throughput that ductility is high
Bag filter and a kind of easy to operate, bag filter production method that can be hand-made and inexpensive；It is provided by the invention many
Many technical effects elaboration as detailed below that optimal technical scheme in technical solution can be generated.
To achieve the above object, the present invention provides following technical schemes:
A kind of bag filter of high-throughput slot provided by the invention, the bag including made of dialysis membrane being in bar shaped tubulose
Body, the bag body it is open at one end, the other end is along the laterally folded sealing of width direction of bag body, and the bag body is in length direction
It goes up longitudinal folding and forms the folding zone of intersection with above-mentioned laterally folded sealing part, the folding zone of intersection is twined by stickum
Around it is fixed and by the glue stick of hot melt, paraffin or other hot melt materials package stickum be sealed with it is secondary solid
It is fixed.
The application method of this bag filter are as follows: the open end of bag body is strutted, by sample solution out of opening merging bag, due to
The length direction of bag body have passed through folding, therefore the side wall of bag body can be unfolded with the merging of sample solution, and sample solution is set
After entering, open end is fixedly clamped with clip or rubber band, is then placed in Dialysis container, as merging buffer etc. its
He is identical the step of step is used with conventional dialysis process, belongs to operating procedure well known to those of ordinary skill in the art, institute
With it is not described here in detail；
This bag filter has the structure of folding and expanding due to bag body, and bag filter sealing end diameter is much smaller than bag filter cross section
Width has better volume ductility, in terms of transport and storage, can be placed on smaller storage and be easy interior, the sky occupied
Between it is smaller；And only with conventional dialysis membrane, the case where not using price elastic material dialysis membrane costly
Under, so that it may realize that the function of being adapted to different size Dialysis containers, cost are lower；And why can be adapted to different size dialysis
Container is that the space that is although occupied due to the foldable structure of its bag body is smaller, but its volume that can accommodate sample solution is remote
Greater than the conventional dialysis bag of same size, therefore the case where be not concerned about the Dialysis container for being not placed into different size, a kind of specification
Bag filter can be adapted to the Dialysis container of plurality of specifications, especially microarray dialysis and need simultaneously with the small centrifugation of different size
Pipe is in use, the bag filter using same specification can be completed；Simultaneously because its volume that can accommodate sample solution is remote
Greater than the conventional dialysis bag of same size, so its actual surface area is bigger, flux is also bigger.
It is worth noting that, being anti-chap, dialysis membrane generally uses 10% glycerol processed when dispatching from the factory, and contains denier
Sulfide, heavy metal and some impurity with UV absorption, they are harmful to protein and other bioactive substances, use
Before must be driven off, can first be boiled 1 hour with 50% ethyl alcohol, then successively with 50% ethyl alcohol, 0.01mol/L sodium bicarbonate and
The washing of 0.001mol/L EDTA solution finally can be used with distilled water flushing；If desired it is recycled, then it is saturating after use
Analysis bag can be stored in 4 DEG C of distilled water after cleaning, if not having to for a long time, can add a small amount of NaNO3, with minister of defense bacterium, clean the saturating of airing
Analysing easy breach, used time when bag bending must go through, can reuse when not leaking.
Optionally, bag body is 1 time at least longitudinal folding in the longitudinal direction by the way of doubling or Z-fold.Specifically
Folding process, can fold 1-2 times or more times, the specific bag body size that regards can allow the number of folding.
Optionally, the caliber size of bag body is 0.2cm-5cm, and the bag body does not include that the length scale of the folding zone of intersection is
0.5cm-15cm.Bag body is greater than the structure of the similar long cylinder of aperture width using length, but this bag filter is not limited to small rule
Lattice size, it is to be understood that this bag filter is equally applicable to big specification, only compares big specification, this bag filter
It is more obvious to be set as beneficial effect possessed by small dimension size.
Optionally, the material of bag body is animal membrane or glassine paper, or is the dialysis membrane made of cellulose.
Optionally, stickum is adhesive tape, and it is main that the glue stick, which is with ethylene-vinyl acetate copolymer (EVA),
The binding of material.
A kind of production method of the bag filter of high throughput slot, for making bag filter, comprising the following steps:
Step S1: prepare bag body, bag body is both ends open or bar shaped tubular structure closed at one end open at one end, in bag body
One end along bag body width direction mark fold blueline, by bag body be divided into cross break area and dialysis area；If bag body is opened for one end
Mouthful, then fold side of the subregion wire tag in bag body close to closed end；
Step S2: bag body is subjected to the vertical folding of at least one cross one, is first carried out in cross break area laterally folded by the one of bag body
Bag body is generally longitudinally folded the width of bag body is made to narrow by end closure then along the length direction of bag body, laterally folded at this time
Sealing part become fold the zone of intersection；
Step S3: the zone of intersection is folded using adhesive tape doubling and is wound fixation；
Step S4: by glue stick or all kinds of using ethylene-vinyl acetate copolymer (EVA) or paraffin as the bonding of main material
Object is heated to melting, and wraps up adhesive tape with hot-melt object, and then cooling is until hot-melt object is cooled to solid-state.
Optionally, in step S1, the bag body length of preparation is 0.5cm-15cm, and cross break area and the length ratio in dialysis area are 1:
2-1:30。
Optionally, in step S2, carry out bag body when generally longitudinally folding by the way of Z-fold, Z-type each time
It folds the following steps are included: first alongst folding the side of bag body once, then by rigid folded portion along folding
Edge is folded again to the opposite direction of last folding direction.
It is worth noting that, if only carrying out a Z-fold, first a side of bag body is existed when carrying out Z-fold
The position of bag body one third width, is folded along the direction of bag body length, then by folded two layers of folding position,
It in the position of 2/3rds width of bag body, is folded again at, that is, completes to opposite direction；If carrying out Z-fold twice, for the first time
Fold selection 1/5th width of bag body position, then successively selection 2/5ths, 3/5ths, 4/5ths position into
Row folds, and the position folding direction of two neighboring folding is opposite；If carrying out Z-fold three times, the first fold selection
The position of 1/7th width of bag body, and so on.
Optionally, in step S3, adhesive tape squeezes the folding zone of intersection while winding folds the zone of intersection, hands over folding
The air discharge pitched in area is clean, and the bottom for folding the zone of intersection is wrapped up in the bottom of adhesive tape.Adhesive tape will fold zone of intersection packet
It wraps up in completely, is in order to avoid hot-melt object directly contacts bag body and causes to damage to bag body.
Optionally, in step S4, by glue stick or it is all kinds of with ethylene-vinyl acetate copolymer (EVA) or paraffin be main
The binding of material is placed in tinfoil paper disk, is heated to melting completely using electric furnace or alcolhol burner, is then cooled down to hot-melt object
Bag body is clamped to 80 DEG C or more, then with tweezers, the folding zone of intersection wrapped up by adhesive tape is put into hot-melt object and wraps up adhesive tape, so
It is placed into afterwards cooling in the environment that temperature is 0-10 DEG C.
A kind of bag filter and preparation method thereof of high-throughput slot provided by the invention, it has the advantage that:
Bag filter on the market is compared, the bag filter sealing end diameter of this method production is wide much smaller than bag filter cross section
Degree has better volume ductility, in terms of transport and storage, can be placed on smaller storage and be easy interior, the space occupied
Smaller, cost is lower；Production method is easy to operate, can make manually, can unrestricted choice varying cross-section bag filter, carry out it is small
Amount and high flux hemodialysis.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the deployed configuration schematic diagram of bag filter of the present invention；
Fig. 2 is bag filter of the present invention by cross break area folded configuration schematic diagram；
Fig. 3 be bag filter of the present invention will dialyse area it is longitudinal folding after structural schematic diagram；
Fig. 4 is the schematic diagram that the folding zone of intersection is fixed bag filter of the present invention.
1- bag body in figure, the 2- folding zone of intersection, 3- stickum, 4- glue stick, 5- folding blueline, 101- cross break area,
102- dialysis area.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Optionally embodiment,
Embodiment 1:
As shown in Figs 1-4, a kind of bag filter of high-throughput slot, the bag body including made of dialysis membrane being in bar shaped tubulose
1, the bag body 1 it is open at one end, the other end is along the laterally folded sealing of width direction of bag body 1, and the bag body 1 is in length side
Longitudinal folding upwards and formed with above-mentioned laterally folded sealing part and fold the zone of intersection 2, the folding zone of intersection 2 passes through goo
Matter 3 be fastened and by the glue stick 4 of hot melt, paraffin or other hot melt materials wrap up the stickum 3 be sealed and
Secondary fixation.
The application method of this bag filter are as follows: the open end of bag body 1 is strutted, by sample solution out of opening merging bag, by
It has passed through folding in the length direction of bag body 1, therefore the side wall of bag body 1 can be unfolded with the merging of sample solution, sample is molten
After liquid is placed in, open end is fixedly clamped with clip or rubber band, is then placed in Dialysis container, as merging buffer
The step of using Deng other steps with conventional dialysis process is identical, belongs to operation step well known to those of ordinary skill in the art
Suddenly, so it is not described here in detail.
Embodiment 2:
On the basis of the above embodiments, scheme as a further preference: as shown in Figs 1-4, bag body 1 is in length direction
On it is 1 time at least longitudinal folding by the way of doubling or Z-fold.Specific folding process, can fold 1-2 times or more
Repeatedly, the specific number that can allow to fold depending on 1 size of bag body.
Embodiment 3:
On the basis of the above embodiments, scheme as a further preference: as shown in Figs 1-4, the caliber size of bag body 1
For 0.2cm-5cm, the bag body 1 does not include that the length scale of the folding zone of intersection 2 is 0.5cm-15cm.Bag body 1 is big using length
In the structure of the similar long cylinder of aperture width, but this bag filter is not limited to small dimension size, it is to be understood that this dialysis
Bag is equally applicable to big specification, only compares big specification, this bag filter is set as having possessed by small dimension size
Beneficial effect is more obvious, and the material of bag body 1 is animal membrane or glassine paper, or is the dialysis membrane made of cellulose, goo
Matter 3 is adhesive tape, and the glue stick 4 is the binding for taking ethylene-vinyl acetate copolymer (EVA) as main material.
Embodiment 4:
A kind of production method of the bag filter of high throughput slot, for making bag filter, comprising the following steps:
Step S1: preparing bag body 1, and bag body 1 is the bar shaped tubular structure of both ends open, and 1 length of bag body of preparation is 6cm,
The length ratio in cross break area 101 and dialysis area 102 is 1:5, marks in one end of bag body 1 along 1 width direction of bag body and folds subregion
Line 5 divides bag body 1 to the cross break area 101 for 1cm long and the dialysis area 102 of 5cm long；
Step S2: bag body 1 is subjected to the vertical folding of a cross one, is first carried out in cross break area 101 laterally folded by the one of bag body 1
Bag body 1 is generally longitudinally folded the width of bag body 1 is made to narrow by end closure then along the length direction of bag body 1, at this time lateral folding
Folded sealing part, which becomes, folds the zone of intersection 2, in the generally longitudinally folding for carrying out bag body 1 by the way of Z-fold, carries out one
Secondary Z-fold, first by a side of bag body 1 in the position of 1 one third width of bag body, along 1 length of bag body direction into
Row folds, then by folded two layers of folding position, in the position of 2/1sts three width of bag body, to opposite direction refolding one
It is secondary, that is, it completes
Step S3: the zone of intersection 2 is folded using adhesive tape doubling and is wound fixation, adhesive tape is while winding folds the zone of intersection 2
The folding zone of intersection 2 is squeezed, the air in the zone of intersection 2 will be folded and be discharged completely, and the bottom of adhesive tape will fold the zone of intersection 2
Bottom package；
Step S4: glue stick 4 is placed in tinfoil paper disk, is heated to melting completely using electric furnace or alcolhol burner, then right
Hot-melt object is cooled to 100 DEG C, then clamps bag body 1 with tweezers, and the folding zone of intersection 2 wrapped up by adhesive tape is put into glue in hot-melt object
Band package is then placed into cooling in the environment that temperature is 0 DEG C；It is thus completed the production after hot-melt object cooled and solidified.
Embodiment 5:
A kind of production method of the bag filter of high throughput slot, for making bag filter, comprising the following steps:
Step S1: preparing bag body 1, and bag body 1 is bar shaped tubular structure closed at one end open at one end, and the bag body 1 of preparation is long
Spending is 3cm, and the length ratio in cross break area 101 and dialysis area 102 is 1:5, in one end of bag body 1 along 1 width direction of bag body label
Blueline 5 is folded, the label of blueline 5 is folded in bag body 1 close to the side of closed end, divides bag body 1 to the cross break area for 0.5cm long
The dialysis area 102 of 101 and 2.5cm long；
Step S2: bag body 1 is subjected to the vertical folding of at least one cross two, is first carried out in cross break area 101 laterally folded by bag body 1
An end closure, then along the length direction of bag body 1 bag body 1 is generally longitudinally folded the width of bag body 1 is made to narrow, it is horizontal at this time
Become to the sealing part of folding and folds the zone of intersection 2, in the generally longitudinally folding for carrying out bag body 1 by the way of Z-fold, into
Capable Z-fold twice, then the position of the first fold selection 1/1st five width of bag body, then successively selects 2/5ths, five
/ tri-, 4/5ths position is folded, and the position folding direction of two neighboring folding is opposite.
Step S3: the zone of intersection 2 is folded using adhesive tape doubling and is wound fixation, adhesive tape is while winding folds the zone of intersection 2
The folding zone of intersection 2 is squeezed, the air in the zone of intersection 2 will be folded and be discharged completely, and the bottom of adhesive tape will fold the zone of intersection 2
Bottom package；
Step S4: it will be placed in tinfoil paper disk, adopted with the binding that ethylene-vinyl acetate copolymer (EVA) is main material
It is heated to melting completely with electric furnace or alcolhol burner, 120 DEG C then is cooled to hot-melt object, then clamp bag body 1 with tweezers, it will
It is put into hot-melt object by the folding zone of intersection 2 that adhesive tape wraps up and wraps up adhesive tape, be then placed into cold in the environment that temperature is 5 DEG C
But, it is thus completed the production after hot-melt object cooled and solidified.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of bag filter of high throughput slot, the bag body (1) including made of dialysis membrane being in bar shaped tubulose, feature exists
In, open at one end, width direction laterally folded sealing of the other end along bag body (1) of the bag body (1), the bag body (1)
It is longitudinal folding in the longitudinal direction and formed with above-mentioned laterally folded sealing part and fold the zone of intersection (2), the folding zone of intersection
(2) it is fastened and is wrapped up by the glue stick (4) of hot melt, paraffin or other hot melt materials described viscous by stickum (3)
Property substance (3) is sealed and secondary fixation.
2. a kind of bag filter of high-throughput slot according to claim 1, which is characterized in that the bag body 1) in length side
It is 1 time at least longitudinal folding by the way of doubling or Z-fold upwards.
3. a kind of bag filter of high-throughput slot according to claim 2, which is characterized in that the bore of the bag body (1)
Size is 0.2cm-5cm, and the bag body (1) does not include that the length scale of the folding zone of intersection (2) is 0.5cm-15cm.
4. a kind of bag filter of high-throughput slot according to claim 1-3, which is characterized in that the bag body
(1) material is animal membrane or glassine paper, or is the dialysis membrane made of cellulose.
5. a kind of bag filter of high-throughput slot according to claim 4, which is characterized in that the stickum (3) is
Adhesive tape, the glue stick (4) are the binding for taking ethylene-vinyl acetate copolymer (EVA) as main material.
6. a kind of production method of the bag filter of high throughput slot, for making bag filter as claimed in claim 4, feature exists
In, comprising the following steps:
Step S1: preparing bag body (1), and bag body (1) is both ends open or bar shaped tubular structure closed at one end open at one end, in bag
One end of body (1) marks along bag body width direction and folds blueline (5), and bag body is divided into cross break area (101) and dialysis area
(102)；If bag body (1) be it is open at one end, fold blueline (5) label bag body (1) close to closed end side；
Step S2: bag body (1) is subjected to the vertical folding of at least one cross one, is first carried out in cross break area (101) laterally folded by bag body
(1) bag body (1) is generally longitudinally folded then along the length direction of bag body (1) and becomes the width of bag body (1) by a end closure
Narrow, sealing part laterally folded at this time, which becomes, folds the zone of intersection (2)；
Step S3: the zone of intersection (2) are folded using adhesive tape doubling and are wound fixation；
Step S4: by glue stick (4) or all kinds of using ethylene-vinyl acetate copolymer (EVA) or paraffin as the bonding of main material
Object is heated to melting, and wraps up adhesive tape with hot-melt object, and then cooling is until hot-melt object is cooled to solid-state.
7. a kind of production method of the bag filter of high-throughput slot according to claim 6, which is characterized in that the step
In S1, bag body (1) length of preparation is 0.5cm-15cm, and the length ratio of cross break area (101) and dialysis area (102) is 1:2-1:
30。
8. a kind of production method of the bag filter of high-throughput slot according to claim 6, which is characterized in that the step
In S2, in the generally longitudinally folding for carrying out bag body (1) by the way of Z-fold, Z-fold includes following step each time
It is rapid: first the side of bag body (1) is alongst folded once, then by rigid folded portion along folded edge to the last time
The opposite direction of folding direction is folded again at.
9. a kind of production method of the bag filter of high-throughput slot according to claim 6, which is characterized in that the step
In S3, adhesive tape squeezes the folding zone of intersection (2) while winding folds the zone of intersection (2), will fold the sky in the zone of intersection (2)
Gas discharge is clean, and the bottom of adhesive tape will fold the bottom package of the zone of intersection (2).
10. a kind of production method of the bag filter of high-throughput slot according to claim 6, which is characterized in that the step
In rapid S4, by glue stick (4) or all kinds of tinfoil paper is placed on the binding that ethylene-vinyl acetate copolymer (EVA) is main material
It in disk, is heated to melting completely using electric furnace or alcolhol burner, 80 DEG C or more then is cooled to hot-melt object, then pressed from both sides with tweezers
The folding zone of intersection wrapped up by adhesive tape is put into hot-melt object and wraps up adhesive tape by firmly bag body, and being then placed into temperature is 0-10 DEG C
Environment in it is cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547135.2A CN110271760A (en) | 2019-06-24 | 2019-06-24 | A kind of bag filter and preparation method thereof of high throughput slot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910547135.2A CN110271760A (en) | 2019-06-24 | 2019-06-24 | A kind of bag filter and preparation method thereof of high throughput slot |
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| CN110271760A true CN110271760A (en) | 2019-09-24 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB660889A (en) * | 1949-01-28 | 1951-11-14 | Robinson E S & A Ltd | Improvements in or relating to satchel bags |
| GB1258303A (en) * | 1969-03-17 | 1971-12-30 | ||
| JPH06345102A (en) * | 1993-06-01 | 1994-12-20 | Oji Seitai Kk | Multiple packing paper bag |
| US5478153A (en) * | 1993-07-06 | 1995-12-26 | Windmoller & Holscher | Multilayer sack or bag with bottom |
| DE20212882U1 (en) * | 2002-07-18 | 2002-10-31 | Jodl Verpackungen Gesellschaft M.B.H., Lenzing | Folded bag and tube for making the same |
| CN1906094A (en) * | 2004-07-23 | 2007-01-31 | 高文海 | Plastic bag with integral tie strip |
| CN102049882A (en) * | 2009-10-29 | 2011-05-11 | 声科家居用品(上海)有限公司 | Method for manufacturing continuous coiling garbage bag with a plurality of wavy bag openings |
-
2019
- 2019-06-24 CN CN201910547135.2A patent/CN110271760A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB660889A (en) * | 1949-01-28 | 1951-11-14 | Robinson E S & A Ltd | Improvements in or relating to satchel bags |
| GB1258303A (en) * | 1969-03-17 | 1971-12-30 | ||
| JPH06345102A (en) * | 1993-06-01 | 1994-12-20 | Oji Seitai Kk | Multiple packing paper bag |
| US5478153A (en) * | 1993-07-06 | 1995-12-26 | Windmoller & Holscher | Multilayer sack or bag with bottom |
| DE20212882U1 (en) * | 2002-07-18 | 2002-10-31 | Jodl Verpackungen Gesellschaft M.B.H., Lenzing | Folded bag and tube for making the same |
| CN1906094A (en) * | 2004-07-23 | 2007-01-31 | 高文海 | Plastic bag with integral tie strip |
| CN102049882A (en) * | 2009-10-29 | 2011-05-11 | 声科家居用品(上海)有限公司 | Method for manufacturing continuous coiling garbage bag with a plurality of wavy bag openings |
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Application publication date: 20190924 |
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