CN206032118U - Double -deck vacuum liquid packaging - Google Patents
Double -deck vacuum liquid packaging Download PDFInfo
- Publication number
- CN206032118U CN206032118U CN201620871119.0U CN201620871119U CN206032118U CN 206032118 U CN206032118 U CN 206032118U CN 201620871119 U CN201620871119 U CN 201620871119U CN 206032118 U CN206032118 U CN 206032118U
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- Prior art keywords
- bag
- packing inside
- packing bag
- outer packaging
- double
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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
- B65D29/00—Sacks or like containers made of fabrics; Flexible containers of open-work, e.g. net-like construction
- B65D29/02—Sacks with laminated or 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
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/02—Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
Abstract
The utility model relates to a double -deck vacuum liquid packaging has the inner packing bag of filling preparation, suit outer packing bag outside inner packing bag to extract the negative pressure between outer packing bag and inner packing bag, and still be provided with the inside lining support that is used for placing inner packing bag in outer packing bag, inner packing bag places in the dress thing storehouse of inside lining support, is provided with the outer anastomotic concaveconvex shape of table skeleton with inner packing bag in the dress thing storehouse. After outer packing bag extraction negative pressure, the inside lining support makes inner packing bag and outer packing bag's deformation receive the restriction, consequently can make inner packing bag keep the shape behind extraction negative pressure structure to make outer packing bag's seal limit more even, firm and solid, prevent the outer packing bag buckling, influence the leakproofness, eliminate deformation that vacuum produced to the packing, tear the influence to this improves the product percent of pass, reduces product manufacturing cost.
Description
Technical field
This utility model is related to a kind of liquid preparation product of pharmaceutical manufacturing enterprise；A kind of especially double-layer vacuum liquid
Preparation is packed.
Background technology
Safe medication is to concern the healthy and safe material particular of people's life, and is related to the hospital and pharmacy enterprise of medication
The material particular of industry existence.Therefore, drug safety is the most important thing of hospital and pharmacy corporation, is the life of hospital and pharmacy corporation
Life.
Liquid preparation is the one kind in medicine, and conventional liquid preparation includes：Oral formulations, irrigation and disinfection preparation, transfusion
Preparation, injection etc..In these liquid preparations, including the preparation that is easily infected by bacterial of some, such as：Some are oral containing saccharide
Liquid, some glucose infusion preparations, also including some injections.
Liquid preparation is generally using vial, plastic bottle and mantle bag packaging.Mantle bag is packed or quality is very soft
Plastic bottle packing be referred to as flexible packaging, the packaging shape that flexible packaging is generally welded as a whole using charge segment and lid
Formula.
In above-mentioned preparation during production packaging, warehouse carrying, transport, use, will prevent medicament from contacting with antibacterial.
Medicament in mainly preventing from packing is contacted with the external world and is contaminated.But if in the case that packaging itself has breakage, then needing
The reason for preparation for being destroyed packaging being rejected, and is destroyed is multifarious with the position of destruction.
Search, presently, there are a kind of method：A poly-bag on the outside of flexible packaging covers again, then
Negative pressure is extracted in poly-bag and poly-bag is sealed, using effect of the negative pressure to flexible packaging, by the preparation in flexible packaging from destruction
Place extrudes and is formed macroscopic water spots, so as to the naked eye find destroyed packaging, so that this product is rejected.The Xiang Fang
In method, flexible packaging is referred to as into packing inside bag, the poly-bag that outside puts is referred to as outer packaging bag.
In the above-mentioned methods, the negative pressure in outer packaging bag is needed there are enough vacuum degrees.However, described is " enough
Vacuum degree " can produce larger active force to packing inside bag, and this larger active force has negative effect, bag to packaging
Include：1st, packing inside bag can be caused to produce a certain degree of deformation, this deformation not only causes packaging external appearance extremely unsightly, and
Packing inside bag is torn easily.2nd, outer packaging bag shrinks to produce and greatly deforms；After deformation extremely unsightly；Easily torn after deformation
Split.3rd, after outer packaging bag is produced and is greatly deformed, to the sealing strip welding process of outer packaging bag in, then put down cannot sealing strip
Suitable, the sealing strip for being welded is possible to failure welding, produces leakage hole, so as to ensure the vacuum degree in outer packaging bag.
Therefore, then it is possible to develop into the active destruction to product to improve product export qualification rate as purpose manner of packing；So that
The disqualification rate of product increases, while increased the production cost of product.
Above-mentioned negative effect Producing reason is as follows：During negative pressure extracting, effect of the negative pressure to packing inside bag makes interior bag
Pack local (especially mantle is shunk with the junction of hardcoat) is deformed, and the mantle at the position just may be torn by hardcoat
Split.Due to being put into packing inside bag in production process, therefore the bag mouth of outer packaging bag must be wider, during extracting vacuum, bag
Mouth is pressed against contract, produces substantial amounts of wrinkle, makes bag mouth be difficult to edge sealing welding.
Therefore, negative pressure is while effect, as a result then constitutes outer packaging bag and Nei Bao to outer packaging bag with packing inside bag
The Superposed Deformation of pack, therefore, the technology packed is destroyed using effect of the negative pressure to packing inside bag to search, be just difficult to.
Utility model content
For solving the above problems, this utility model provides a kind of double-layer vacuum pack for liquids, can eliminate negative pressure pair
The deformation of packaging generation, tear affect, and improve conforming product rate with this, reduce production cost.
Double-layer vacuum pack for liquids double-layer vacuum pack for liquids of the present utility model, by the inner packing of liquid drug
Bag, and the outer packaging bag outside the packing inside bag constitutes, and is negative pressure between packing inside bag and outer packaging bag, packing inside bag with it is outer
There is liner support between packaging bag.
Under negative pressure structure active force during contraction distortion, the liner support 2 enters described outer packaging bag to outer packaging bag
Row is from interior to around supporting, and the form of fixed packing inside bag.
Packing inside bag 3 is positioned on liner support 2；The form of described fixed packing inside bag includes fixing the inner packing
Position and packing inside bag own form of the bag in outer packaging bag.
Double-layer vacuum pack for liquids as above, specifically, described liner support 2 is packing inside bag pallet, bag
The edge 2-1 that dress thing storehouse 2-2 is formed with dress thing storehouse periphery is included, described packing inside bag 3 is positioned in dress thing storehouse.Described edge
2-1 is plane.
Double-layer vacuum pack for liquids as above, specifically, described liner support is by shape around die and die
Into edge constitute；Described die is downward depression, and depression forms dress thing storehouse 2-2；Described edge 2-1 is in outer packaging bag
It is interior and by outer packaging bag from interior to around supporting.
Double-layer vacuum pack for liquids as above, it is preferred that be formed with concaveconvex shape in described dress thing storehouse, it is concavo-convex
Shape and 3 outer table skeleton of the packing inside bag coincide, and limit packing inside bag and in dress thing storehouse 2-2 move and deform, and make interior bag
Pack keeps shape after negative pressure structure is extracted.
Double-layer vacuum pack for liquids as above, it is preferred that the depth of described dress thing storehouse 2-2 is put down with packing inside bag
Put thickness correspondence.
Double-layer vacuum pack for liquids as above, it is preferred that described liner support 2 is hard material.
Double-layer vacuum pack for liquids as above, it is preferred that described liner support 2 is hard transparent plastic system
Into；Thickness is 0.3-3mm；The area of the plane of liner support is more than the area of packing inside bag plane putting down less than outer packaging bag
The area in face.
Double-layer vacuum pack for liquids as above, it is preferred that the corner outer rim rounding of described liner support 2.
Double-layer vacuum pack for liquids as above, it is preferred that edge that described dress thing storehouse 2-2 peripheries are formed and recessed
Its width of the edge formed around mould is more than 3mm.
Double-layer vacuum pack for liquids as above, it is preferred that edge and die that described dress thing storehouse periphery is formed
Its width of edge that surrounding is formed is 3mm～30mm.
Double-layer vacuum pack for liquids as above, specifically, described liner support 2 is box body structure；Described
Liner support 2 is bowl structure；Described liner support is slab construction.
Double-layer vacuum pack for liquids as above, specifically, described outer packaging bag is packed for soft film material；It is described
Packing inside bag be soft film material packaging.
The beneficial effects of the utility model are：
Packing inside bag of the present utility model is placed in the dress thing storehouse of liner support, and is filled in thing storehouse and had concaveconvex shape,
Concaveconvex shape is coincide with the outer table skeleton of packing inside bag, is effectively equivalent to packing inside bag and is stuck in liner support, therefore inner packing
Movement or deformation of the bag in dress thing storehouse are completely restricted.
Liner support is supported to both sides to the bag mouth of outer packaging bag, and during negative pressure extracting, liner support stops
The inside contraction distortion of bag mouth of outer packaging bag.
Liner support is supported from inside to outside to outer packaging bag, prevent outer packaging bag be attached under suction function completely together and
The negative pressure between packing inside bag and outer packaging bag is caused to disappear.
After outer packaging bag extracts negative pressure, liner support makes packing inside bag and the deformation of outer packaging bag be restricted, interior bag
Pack is very little with the deflection of outer packaging bag.Make the welded seal side of outer packaging bag evenly, it is firm and solid；Prevent outer packaging bag from producing
Raw fold, affects sealing.So as to eliminate deformation, the tear impact that vacuum is produced on packaging, conforming product rate is improved with this,
Reduce production cost.
Description of the drawings
Fig. 1 is this product structure chart.
Fig. 2 is the a-a of this product to profile.
Fig. 3 is liner supporting structure schematic diagram.
Fig. 4 is liner support b-b to profile.
Fig. 5 is placed on schematic diagram in liner support for packing inside bag.
Detailed description of main elements in figure：
1st, outer packaging bag；1-1, welded seal side；The pre- high frequency sealing edges of 1-2, outer packaging bag；2nd, liner support；2-1, edge；2-
2nd, fill thing storehouse；3rd, packing inside bag；3-1, packing inside bag toe；3-2, packing inside bag lid.
Specific embodiment
It is for making the purpose of this utility model, technical scheme and advantage clearer, concrete below in conjunction with this utility model
Embodiment and corresponding accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 5 carry out clear, complete to technical solutions of the utility model
Ground description.
Double-layer vacuum pack for liquids of the present utility model has the packing inside bag 3 of fill double-layer vacuum pack for liquids,
And the outer packaging bag being set with outside packing inside bag, negative pressure is extracted between the outer packaging bag and packing inside bag in outer packaging bag 1
Structure, is additionally provided with the liner support 2 for supporting outer packaging bag in outer packaging bag 1.The liner support is to outer packaging bag
Support from inside to outside, prevent outer packaging bag to be attached to completely together under suction function, make between packing inside bag and outer packaging bag
Negative pressure disappears.From the point of view of the reason for negative pressure is formed, it is to make between packing inside bag and outer packaging bag, the presence of certain space,
Negative pressure is present in the space.
During this utility model is implemented, liner support uses box body structure, bowl structure or slab construction, disk
Shape structure.In order that this utility model reaches optimum efficiency, following examples are illustrated from disk-like structure.
Example 1, as shown in fig. 1：Outer packaging bag is packed for soft film material；Heat is carried out to three sides of outer packaging bag first
Close, form the pre- high frequency sealing edges 1-2 of outer packaging bag as seen in Figure 1, and leave a bag mouth.After negative pressure is extracted, bag mouth is gone close again
Envelope, forms welded seal side 1-1.
Packing inside bag is packed for soft film material, arranges textured relatively hard inner packing pkt. flap on the top of packing inside bag
Body, packing inside bag periphery are packing inside bag toe 3-1.Liner support 2 is tray shape, is dress thing storehouse 2-2, fills thing in the middle part of pallet
Concaveconvex shape is formed with storehouse, and concaveconvex shape is produced with the outer table skeleton of packing inside bag lid 3-2 and charge segment and coincide, and fills thing
The edge 2-1 that storehouse periphery is formed, and edge is plane, packing inside bag 3 is positioned in dress thing storehouse, therefore and is limited in dress thing storehouse
Move in 2-2 and deform.
Liner support 2 select material it is unrestricted, can for hard transparent plastic, hard PVC piece film, safety glass,
Compound material.In this example, the material that liner support 2 is selected is clear hard plastic material, and its thickness is 1.5mm；Dress
The thickness when depth in thing storehouse is kept flat with packing inside bag (lie low and put upside down) is corresponding, and the depth in dress thing storehouse is slightly less than packing inside bag and keeps flat
Thickness, in the selection course of the depth in dress thing storehouse, mainly considers two factors：1st, fill thing storehouse depth and cross ambassador's this utility model
Liner support volume it is excessive, it is too high that excessive volume is propped up can on the contrary the bag mouth of outer packaging bag, increased outer packaging bag
Extracting negative pressure difficulty during welded seal side, making the wrinkle that welded seal side produces bigger, 2, the depth in dress thing storehouse it is too small
Concaveconvex shape and packing inside bag lid and the outer table skeleton goodness of fit of charge segment can be made low again, internal packaging bag lid and powder charge portion
The parcel sense for dividing is low, and the deformation to packing inside bag and displacement limitation capability are reduced.Therefore, it is in the depth in design dress thing storehouse, main
Consider above-mentioned 2 factors.In the present embodiment, packing inside bag 3 is packed from mantle bag, and is provided with inner packing
Pkt. flap body, it is therefore desirable to fill thing storehouse depth larger.When mantle bag is packed, it is considered to vacuum degree, available dress thing storehouse depth
For：
| Vacuum in outer packaging bag | -50KPa | -70KPa | -80KPa | -100KPa |
| Dress thing storehouse depth and lid thickness ratio | 1：4 | 1：3 | 1：2.2 | 1：1 |
| Inside and outside packaging bag deflection | Zone of reasonableness | Zone of reasonableness | Zone of reasonableness | Zone of reasonableness |
In above table, vacuum unit is relative degree of vacuum.
In above table, Data Source is：When packing inside bag keeps flat, packing inside bag lid diameter dimension and inner packing
The charge segment general thickness of bag is slightly with the case of.In the depth range of choice in above-mentioned dress thing storehouse, it is also possible to directly reference：Dress
Thing storehouse depth is less than in the range of the 2-100mm of packing inside bag lid thickness dimensions, certainly, due to the Load to packing inside bag
Under for unknown situation, then above-mentioned size (referring to 2-100mm scopes) needs to refer to other factorses.
Outer packaging bag of the present utility model, packing inside bag membrane material should reach the printing opacity that light transmittance is at least 70% on selecting
Rate.
The material that liner support 2 is selected is clear hard plastic material, including acrylic board, Hard PVC plate.It is selected herein
It is, on the premise of production cost is considered, after extracting negative pressure in outer packaging bag, to ensure liner support to greatest extent certainly with thickness
Body is indeformable.By taking PVC transparent plastic plate as an example, then thickness should reach 0.3～3mm, and preferred thickness is 1mm.Specifically：With
As a example by PVC board, when the border width for filling two side of thing storehouse is 10mm, available thickness is：
In above table, vacuum unit is relative degree of vacuum.PVC board thickness is millimeter (mm).
The border width that dress thing storehouse periphery is formed is 3mm～100mm.By taking PVC transparent plastic plate as an example, if thickness reaches
1mm, available border width is：
In above table, vacuum unit is relative degree of vacuum.Border width is millimeter (mm).
In this utility model implementation process, as liner support is hard material, therefore the corner outer rim of liner support 2
Must rounding, if corner outer rim be right angle, extract negative pressure after, mantle formed outer packaging bag can press on right angle
On, so that right angle stabs out outer packaging bag, therefore the corner outer rim of liner support 2 must rounding.
After liner support loads in outer packaging bag, when negative pressure has been extracted in outer packaging bag, the active force of negative pressure can make
Outer packaging bag is obtained by four circumferential central reductions, when shrinking, outer packaging bag is applied counteracting force to surrounding by liner support, is supported
Outer packaging bag so as to keep shape, do not deform.Especially at the bag mouth of outer packaging bag, liner support supports bag mouth
Left and right sides, make bag mouth not shrink.In order that keep shape, need to fix the width of bag mouth and liner support width it
Than described bag mouth is appreciated that any a line for being the outer packaging bag being made up of four sides, in the inner surface of outer packaging bag
The length of any a line be the side bag mouth width.The width of described liner support is：On liner support with it is outer
Packaging bag width while adjacent and parallel, any a line of the outer packaging bag side for outer packaging bag.
The ratio of the width of bag mouth and the width of liner support：
| Bag mouth width | 1 | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 1.7 | 1.8 |
| The width of liner support | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
When the width of liner support is equal to bag mouth width (1：1 situation), to the support of outer packaging bag be it is optimal, but
The process that packing inside bag is encased in outer packaging bag is relatively difficult.When the width of liner support is bag mouth width (1：1.3
Situation), the support to outer packaging bag is preferably, bagging process is easier.It is bag mouth width in the width of liner support
When (1：1.8 situation), bagging process is very easy to, to the support of outer packaging bag but effect on driving birds is not good.
Production process of the present utility model approximately as：
1st, packing inside bag is made, and to filling liquid medicament in packing inside bag.
2nd, the packing inside bag of medicament installs lid additional by fill.Complete lid welding.
3rd, according to packing inside bag and the anastomotic structures of liner support, packing inside bag is put on liner support, and is buckled.
4th, packing inside bag and liner support are put into into outer packaging bag, extract the vacuum that the air in outer packaging bag reaches requirement
Degree.
5th, after forming certain vacuum in outer packaging bag, if there is breakage on packing inside bag, no matter badly broken journey
Degree how (either larger breakage still the sightless situation of extremely tiny naked eyes), the negative pressure meeting formed in outer packaging bag
The medicament of fill in packing inside bag is forced to be flowed between the outer packaging bag in outer packaging bag and packing inside bag and extract negative pressure structure
In, form macroscopic water spots.If the breakage on packing inside bag is extremely tiny situation, then product is placing a period of time
After (1 to 20 day), the continuous negative pressure state in outer packaging bag can equally make the damaged of packing inside bag form water spots.
Therefore, the double-layer vacuum pack for liquids for having water spots is rejected, which is reduced and is flowed into the probability used by hospital, from
And improve conforming product rate of dispatching from the factory.
It is above-mentioned for this utility model exemplary illustration, do not represent protection domain of the present utility model.
Claims (10)
1. a kind of double-layer vacuum pack for liquids, by the packing inside bag of liquid drug, and the outer packaging bag outside the packing inside bag
Constitute, be negative pressure between packing inside bag and outer packaging bag, be characterised by：There is liner between packing inside bag and outer packaging bag
Frame.
2. double-layer vacuum pack for liquids as claimed in claim 1, it is characterised in that described outer packaging bag is in negative pressure structure
Under active force during contraction distortion, liner support (2) are carried out to outer packaging bag from interior to around supporting, and fixed packing inside bag
Form.
3. double-layer vacuum pack for liquids as claimed in claim 1, it is characterised in that packing inside bag (3) is positioned over liner
On frame (2)；The form of described fixed packing inside bag includes fixing position of the packing inside bag in outer packaging bag and interior bag
Pack own form.
4. double-layer vacuum pack for liquids as claimed in claim 2, it is characterised in that described liner support (2) is pallet,
Including the edge (2-1) that dress thing storehouse (2-2) is formed with dress thing storehouse periphery, packing inside bag (3) is positioned in dress thing storehouse, described side
Edge (2-1) is plane.
5. double-layer vacuum pack for liquids as claimed in claim 4, it is characterised in that described liner support by die with it is recessed
The edge formed around mould is constituted；Described die is downward depression, and depression forms dress thing storehouse (2-2)；Described edge (2-
1) support to around from interior in outer packaging bag and by outer packaging bag.
6. double-layer vacuum pack for liquids as claimed in claim 4, it is characterised in that be formed with described dress thing storehouse concavo-convex
Shape, concaveconvex shape and the outer table skeleton of the packing inside bag (3) are coincide, and limit packing inside bag and move in dress thing storehouse (2-2)
And deformation, make packing inside bag keep shape after negative pressure structure is extracted.
7. double-layer vacuum pack for liquids as claimed in claim 4, it is characterised in that the depth in described dress thing storehouse (2-2)
Thickness is kept flat with packing inside bag corresponding.
8. double-layer vacuum pack for liquids as claimed in claim 1, it is characterised in that described liner support (2) is hard
Material.
9. double-layer vacuum pack for liquids as claimed in claim 1, it is characterised in that described liner support (2) is hard
Transparent plastic is made；Thickness is 0.3-3mm；The area of the plane of liner support is more than the area of packing inside bag plane and less than outer
The area of the plane of packaging bag.
10. double-layer vacuum pack for liquids as claimed in claim 4, it is characterised in that described dress thing storehouse (2-2) periphery shape
Into edge and die around its width of edge for being formed be more than 3mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016105763179 | 2016-07-21 | ||
| CN201610576317 | 2016-07-21 |
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| Publication Number | Publication Date |
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| CN206032118U true CN206032118U (en) | 2017-03-22 |
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ID=57480833
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620871119.0U Active CN206032118U (en) | 2016-07-21 | 2016-08-11 | Double -deck vacuum liquid packaging |
| CN201610658674.XA Pending CN106043921A (en) | 2016-07-21 | 2016-08-11 | Double-layer vacuum liquid packaging bag |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610658674.XA Pending CN106043921A (en) | 2016-07-21 | 2016-08-11 | Double-layer vacuum liquid packaging bag |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043921A (en) * | 2016-07-21 | 2016-10-26 | 吴敏玉 | Double-layer vacuum liquid packaging bag |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2123509U (en) * | 1992-01-28 | 1992-12-02 | 卢铁英 | Composite vacuum soft packing bag for snack |
| CN2661615Y (en) * | 2003-12-19 | 2004-12-08 | 刘清莲 | Vacuum packaging bag for dried prawn |
| KR100850168B1 (en) * | 2007-06-28 | 2008-08-04 | 주식회사 이엔케이 | Cryogenic storage vessel |
| CN101461756B (en) * | 2007-12-17 | 2012-07-25 | 丽珠集团利民制药厂 | Medicine liquid flexible package and method for packing the same |
| CN102001488A (en) * | 2010-12-29 | 2011-04-06 | 大连裕曼食品有限公司 | Vacuum package bag |
| CN104443509B (en) * | 2014-09-28 | 2017-03-01 | 李双玉 | Prepared food vacuum-packing method and vacuum packaging prepared food |
| CN204581947U (en) * | 2015-01-12 | 2015-08-26 | 华润双鹤药业股份有限公司 | A kind of two-fold valve transfusion bag with protection inner bag function |
| CN206032118U (en) * | 2016-07-21 | 2017-03-22 | 吴敏玉 | Double -deck vacuum liquid packaging |
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2016
- 2016-08-11 CN CN201620871119.0U patent/CN206032118U/en active Active
- 2016-08-11 CN CN201610658674.XA patent/CN106043921A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043921A (en) * | 2016-07-21 | 2016-10-26 | 吴敏玉 | Double-layer vacuum liquid packaging bag |
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| CN106043921A (en) | 2016-10-26 |
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