Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, part relevant to invention is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Currently, in the prior art often using a kind of simple high-barrier packaging bag, only bag body itself, bag body one
Side is sack, and sack is heat sealable or self-locking pressing, this packaging bag only have high leakproofness, and not anti-dilatancy is facing
In the case of packing material causes bag body prolonged expansion even to explode due to volatility, it can not solve also not can avoid;Again
Such as existing another technology be using a kind of anti-expansion container bag of high barrier, including inner bag and outer bag, inner bag by aluminium foil,
Adhesive layer and nine layers of PET film are co-extruded, and outer bag is made of monofilament, are specifically cross-woven outer bag braiding by organizine and tram
Cloth, inner bag inside are uniformly provided with four netted partitions, and interior outer bag is used in combination, good airproof performance, using netted partition, guarantee whole
Molding effect it is good, anti-swelliong power is good, but have volatile article can persistently distribute bulk gas during transportation
And vapor, although this sack can effectively isolating peculiar smell leak, be easy to cause bag body prolonged expansion, can also be quick-fried when serious
It is fried, this is because in bag gas pressure constantly increase, do not have to absorb the substance of bulk gas in bag, will be more than bag body sheet
The limit of expansion of body and the problem of explode, leak.
To solve in the prior art because bag body constantly expand caused explosion issues, the embodiment of the present invention in order to avoid
The appearance of said circumstances provides a kind of anti-leak, the packaging bag of anti-expansion and the preparation method of the packaging bag and user
Method.
As shown in Figure 1, bag body 1 includes at least one article placed cavity 2 and at least one gas in one embodiment
Absorbing cavity 3;It is connected between each article placed cavity 2 and air absorbing cavity 3 described at least one by gas diffusion paths 7
It is logical;Each article placed cavity 2 is equipped with sack 6.
The present embodiment does exemplary illustrated by taking the logistics transportation of durian as an example.Durian is during packed and transported, in order to protect
The freshness of pulp is held, the general high-isolation bag being made into using plastic foil, this bag body has preferable intensity and leakproofness, and ties
Structure is simple, is usually exactly the bag body with sack.The packaging bag for being packaged with durian is put into the packet of foam cotton when transport
It in vanning, is transported together with other express mails, in the process because durian constantly discharges irritative gas, gas pressure reaches bag body itself
Bag body is exploded when limit of expansion, and leaking so as to cause peculiar smell leads to pollute other express mails.The packaging bag that the present embodiment proposes can be complete
Above situation is avoided entirely, the bag body of packaging bag includes multiple chambers, with article placed cavity and air absorbing cavity two chambers
For, it is connection between two chambers, wherein article placed cavity can be absorbed for placing durian, air absorbing cavity for placing
The substance of gas, durian storage or transportational process in constantly discharge gas, by the channel between two cavitys, gas is by gas
The substance that gas can be absorbed in absorbing cavity is absorbed, so that bag body, which will not expand, will not more explode, is saved simultaneously
A large amount of transport space.
Further, gas adsorption material 9 is provided in each air absorbing cavity.Gas adsorption material may include
But the porous materials material such as be not limited to active carbon, diatomite, molecular sieve, silica gel, activated aluminum, vermiculite, polymer absorbant, needs
It is noted that gas adsorption material must have absorption to gas.It can also be applied in actual use using cavity wall
Have the mode of gas adsorption material, which it is noted that material coating thickness, to avoid influence absorption efficiency.
Preferably, it is connected between article placed cavity 2 and air absorbing cavity 3 by Non-return air valve 4, is wrapped when in article placed cavity
When filling the pressure of the gas of object release and being greater than the pressure of air absorbing cavity, Non-return air valve is automatically turned on, and gas is from article placed cavity
Air absorbing cavity is flowed to, as long as constantly generating gas in article placed cavity, and when gas pressure is bigger than the pressure of air absorbing cavity,
This circulation of gas is just continued for, that is to say, that this bag body can prevent from expanding well.Meanwhile if gas absorbing material
Reach the absorption upper limit or infiltration rate is slack-off, the gas for being passed to air absorbing cavity will not flow back into article placed cavity, that is, rise
Gas barrier to two chambers acts on.
Further, the mode of the sealing of packaging bag described in the present embodiment preferably seals, and packaging bag seal line is heat
Seal line.So-called heat-sealing makes plastic film sealing using extraneous various conditions (such as electric heating, high frequency voltage and ultrasonic wave)
Position is heated to become viscosity flow state, and by certain pressure, is integrated double-layer films fusion, keeps some strength after cooling,
The most commonly used is heat sealing machines.Influence factor should be fully considered when heat-sealing, arrive phase again after determining temperature, pressure and the bound of time
Related process is adjusted on the heat-seal equipment answered, is sealed again after complete, can be only achieved heat-sealing effect well in this way.Seal effect
It is good, then illustrate that the leakproofness of bag body is fine.
Further, the gas diffusion paths 7 in the present embodiment are the hot-sealing lines 5 across bag body, to across bag body
Without limitation, during sealing this sealing lines, it is close that gas diffusion paths pass through this to specific location of the seal line in bag body
Line connection article placed cavity and air absorbing cavity are sealed, while being heat-sealed and being fixed in bag body.
Further, bag body 1 is provided through at least one seal line 5 of bag body, and the seal line 5 separates bag body 1
For at least one article placed cavity 2 and at least one air absorbing cavity 3.It should be noted that the seal line of bag body is passed through, it can
To be straight line, be also possible to curve, preferably U-shaped line or L shape, for example, making a circle after U-shaped line separates bag body outside bag body as gas
Body absorbing cavity, rest part are article placed cavity, can save more memory spaces in this way for packing material;It is described across bag body
Without limitation, but specific setting condition should meet at least following two situation: 1, gas to specific location of the seal line in bag body
The gas flow for absorbing intraluminal absorbable or receiving or deodorization is greater than the amount for needing absorbed gas, and 2, to have in article cavity package
Enough space packing materials.
Further, air absorbing cavity 3 with the article placed cavity 2 in addition to being connected to, remaining position seals, the present embodiment
The shaped article of middle packaging bag can be with article placed cavity and air absorbing cavity, and gas adsorption material is sealed in advance;
It is also possible to single layer or two layers of bag body raw material, scene heat-sealing at two chambers and seals gas adsorption material in express delivery packaging.
Preferably, the material of the packaging bag in the present embodiment is the composite material of PE and PA.This kind of composite material belongs to existing
Have material, with tensile strength is high, moisture-proof wet performance is good, oxygen transmission rate is low, oil resistant, high-low temperature resistant, nontoxic, tasteless, easy heat-sealing,
The features such as air-tightness is good, light specific gravity, can squeeze out composite material by more extruders, carry out into head compound total
It squeezes, then blow molding is film-form.Certainly, packaging bag provided in this embodiment is not limited to above-mentioned material and is made, and is also possible to general
Logical plastics, polyethylene etc. are made, as long as meeting leakproofness, draftability and safety.
In second of embodiment, such as Fig. 2, Non-return air valve is not used between article placed cavity 2 and air absorbing cavity 3, and
By gas diffusion paths fabric connectivity, simply such as venthole, ventilation pipe, specifically such as trumpet type channel, round mouth are logical
Road, polygon mouth channel, multiple pore channels etc. can also be in heat seal process using interruption hot-sealing line, and discontinuities are
The gas diffusion paths of two chambers.When article placed cavity inner package discharges gas, gas will be by way of diffusion certainly
It is dynamic to enter air absorbing cavity across diffusion admittance;When the gas pressure of article placed cavity inner package release is greater than air absorbing cavity
Pressure when, this diffusion velocity is faster.Under this situation, as long as article placed cavity packing material constantly generates gas, gas is inhaled
It receives intracavitary absorbing material just adsorbing always, i.e. this process of circulation of gas is just continued for, therefore can be played very well
Prevent expansion technical effect.
In the third embodiment, such as Fig. 3, the air absorbing cavity 3 is additionally provided with gas other than gas diffusion paths 7
Body flow channel 12, deodorization absorbent 11, exhaust outlet 10, gas flow channel 12 are located inside air absorbing cavity 3, one end with
The gas diffusion paths 7 are connected to, and the other end is connected to the exhaust outlet 10, filling or painting in the gas flow channel 12
It is covered with deodorization absorbent 11.Working principle be the peculiar smell that comes out of article placed cavity packing material by gas diffusion paths 7 into
Enter the gas flow channel 12 of air absorbing cavity, gas passes through deodorization absorbent packing layer or coat, the peculiar smell quilt in gas
Cavity is discharged by the exhaust outlet 10 of the tail end of gas flow channel 12 sufficiently after absorption, such such a gas stream passes through
Journey will not only pollute other express mails during durian packed and transported, but also can prevent bag body expansion well again.
Preferably, article placed cavity bag body material is the clad aluminum foil bag of puncture-resistant, and air absorbing cavity bag body material is height
The aluminium foil bag of barrier property, entire bag body material are not limited to above-mentioned material, are also possible to other with high leakproofness, high-intensitive material
Material, as long as being able to satisfy performance, safety.
Further, 11 material of deodorization absorbent can be but not limited to active carbon, silica gel, activated alumina, active carbon,
The porous materials material such as molecular sieve, it should be noted that deodorization absorbent mainly adsorbs peculiar smell, and whether there is or not absorption to make to gas
With with no restrictions.In actual use, deodorization absorbent is filled in gas flow channel, is also possible to coated in gas stream
In dynamic channel, it is desirable that the ratio of height to diameter and porosity of deodorization absorbent packing layer must be able to reach gas in effective adsorbent article placed cavity
The purpose of body.
Further, the appointing in addition to seal line where gas diffusion paths in air absorbing cavity 3 can be set in exhaust outlet 10
At meaning, including air absorbing cavity remaining three sealing lines;Exhaust outlet and the gas flow channel company of sealing by way of sealing
It connects.
Further, the contour structures of gas flow channel 12 include but is not limited to snakelike shape, it is annular shape, back-shaped needle-shaped
Deng internal usually through hole shape, convenient for filling the circulation of deodorization absorbent and gas;The size of gas flow channel mouth is big
In the size equal to gas diffusion paths, while being also greater than the size equal to exhaust outlet;Gas flow channel two sides are reserved with
The only passable structure of supplied gas first takes down one of structure in actual use, to deodorization populated in gas flow channel
Adsorbent and then by this sealing structure taken down up to prevent filler from leaking;Gas flow channel is placed into gas suction
After receiving chamber, there are two types of gas flow channel one end and the connection types of gas diffusion paths: one is docking gas diffusion paths,
And be sealed at gas diffusion paths by heat-sealable way or mechanical seal mode, another kind is gas flow channel docking gas
Seal line where body diffusion admittance and gas diffusion paths are located inside gas flow channel, and gas is sealed in by heat-sealable way
Where body diffusion admittance in seal line.
It, optionally, can be by bag when being greater than 1 across the seal line or hot-sealing line of bag body based in aforementioned three kinds of embodiments
Body is separated out multiple article placed cavities and multiple air absorbing cavities, such as: two sealing lines cross are separated out four chambers,
Two article placed cavities and two air absorbing cavities, as shown in figure 4, each article placed cavity can be absorbed with other two gas
Chamber is all connected to, and is only connected with one of air absorbing cavity as shown in figure 5, being also possible to each article placed cavity;Again for example:
Two sealing lines and column distribution, are partitioned into three chambers, and as shown in Fig. 6, centre is air absorbing cavity, and both sides are that article is put
Chamber is set, each article placed cavity is connected to the air absorbing cavity of the centre.
4th kind of embodiment, optionally, article placed cavity and air absorbing cavity are detachably connected by gas diffusion paths.
It should be noted that Detachable connection structure includes but is not limited to gas quick connector, the fast twist-on head of gas, cannula structures;Object
The bag body material of product placed cavity is preferably aluminium foil bag, is also possible to other materials with high leakproofness, high intensity, as long as can be full
Sufficient performance, safety;The bag body material of air absorbing cavity is preferably disposable material, is also possible to other with tensile strength
High, moisture-proof wet performance is good, oxygen transmission rate is low, oil resistant, high-low temperature resistant, nontoxic, tasteless, easy heat-sealing, the features such as air-tightness is good, light specific gravity
Material.
Now illustrate this embodiment, the article placed cavity and gas of this packaging bag by taking the structure with gas quick connector as an example
Absorbing cavity is independent of each other two parts, but between be connected to by gas quick connector, the female of quick connector passes through article
The seal line of placed cavity side is simultaneously fixed in this seal line by sealing, and the male connector of quick connector passes through air absorbing cavity side
Seal line is simultaneously fixed in this seal line by sealing, and air absorbing cavity is internally provided with gas adsorption material in advance.Actual use
When, after packing material is placed on article placed cavity, article placed cavity sack is sealed, the gas in air absorbing cavity is inserted into public access fastly
Head inserts female connector to the gas being inserted on article placed cavity fastly, and first use can be completed;When air absorbing cavity bag body is used
After primary, article placed cavity can be retained, then change new air absorbing cavity, so the present embodiment can by Detachable connection structure
To realize the recycling of article placed cavity bag body.
It should be noted that in the present embodiment with the explanation of same steps in other embodiments and identical content, Ke Yican
According to the description in other embodiments, details are not described herein again.
The present invention is directed to above-mentioned first three embodiment, additionally provides a kind of application method of packaging bag, such as Fig. 7, Xia Shubu
Suddenly operation order is not limited:
Express delivery packer takes a packaging bag, packaging bag removes bag after the overall weighing of packing material progress that required hair is walked
Other three sides are sealed in advance outside mouth 6, according to the characteristic of packing material volatilization gas, are chosen gas adsorption material 9, are inhaled here
Enclosure material can be chemical reaction class material, and the chemical reaction class material, which is wanted to correspond to, at this time absorbs the gas that packing material evaporates
Body is also possible to porous physisorption material.A certain amount of gas adsorption material 9 is put into gas by sack 6 to absorb
3 position of chamber, according to the size of 9 amount of 8 size of packing material and gas adsorption material, the cut-off rule of selected two cavitys (is sealed
Line 5) position, then the position is sealed using heat sealing machine.Optionally, the air absorbing cavity of gas adsorption material is preset
A part that can be molded packaging bag, without being operated in packaging step.
Packing material 8 is packed into article placed cavity 2 from sack 6, notices that packing material volume cannot be excessive in the process, is otherwise easy
It causes packing material shaking in transportational process to rack bag body, peculiar smell is caused to leak;In addition, can be cut to packing material, make as far as possible
The packaging volume of each packaging bag almost so that it is convenient in packing case multiple packaging bags stack.
Sack 6 is quickly sealed with heat sealing machine, and the being sealed property inspection to entire packaging bag, specifically to each
Sealing lines coat leak detection liquid, see if there is bubble generation, if so, heat-sealing should be re-started, until bubble-free generates.So far complete
At the entire packaging of a packing material.
And so on, other packing materials can be packed, the volume size finally presented according to packaging bag is finally being wrapped
Stacking for multiple packaging bags is carried out in vanning, if being easy to be squeezed and deformed between the packing material of packaging bag, should ensure that adjacent packaging
There are the substances such as air bag or foam cotton to be buffered between bag.
The characteristic of the volatilization gas of long-term, a large amount of packing materials for needing express delivery conclude in practical operation total
Knot, for example several major class are divided, the large batch of packaging bag with gas absorbing material is then processed, it directly will packet in practical application
Dress object puts article case into, then sealing to sack can.The application method of technical solution in embodiment is simple,
It is convenient, reliable, the mode that high-isolation bag carries out simple seal is directlyed adopt compared to the prior art, and the method is more suitable for practical object
Packing material has peculiar smell, the situation that bag body constantly expands in transport in stream, can carry out again simultaneously for same packing material large quantities of
Amount operation.
Packaging bag can directly process preparation in packaging by logistics personnel, but this will increase logistics operation step, drop
Low packaging speed.It is therefore preferable that providing the packaging bag for the type that has been processed into logistics personnel.In view of this, in above-mentioned first three
In embodiment, present invention also provides a kind of preparation for processing of packaging bag, such as Fig. 8, following procedure of processings do not limit behaviour
Work sequence:
Bag body usually selects single layer, bilayer, multilayer plastic or clad aluminum foil bag, and first tile entire bag body, with heat sealing machine heat
Other edges of envelope body 1 in addition to sack 6, hot-sealing line is close to bag body edge;If air absorbing cavity has exhaust outlet, answer
Exhaust outlet is opened up in any position of the air absorbing cavity in addition to passing through seal line where gas diffusion paths.
Hot-sealing line 5 is set in bag body 1, and heat-sealing line position can be in the middle part of bag body, in the middle part of to the right in the middle part of bag body or bag body
It is to the left, it is also possible to the other positions of bag body, the effect of hot-sealing line is that bag body 1 is divided into article placed cavity 2 and gas absorption
Chamber 3, but before heat-sealing, preset gas adsorption material 9 is answered in air absorbing cavity 3, gas adsorption material 9 can be coating in the cavity
Chemical reaction class material on wall, is also possible to the porosity such as active carbon adsorbent material or one is equipped with deodorization absorbent
Gas flow channel device.
During hot-sealing line is set, gas diffusion paths 7 are set between article placed cavity 2 and air absorbing cavity 3
Or Non-return air valve 4.If to make Non-return air valve pass through hot-sealing line 5 and connection two chambers, while heat using Non-return air valve 4
Non-return air valve 4 is securely seated between on hot-sealing line 5 and bag body 1 by envelope line 5.If using gas diffusion admittance 7 can pass through to be formed
Intermittent hot-sealing line reserves gas diffusion paths 7.
It should be noted that packaging bag bag body material is different, sealing the technology used may different, special circumstances
Under need constantly to be groped and detected using heat sealing tester and electronic tensile machine, determine the upper of temperature, pressure and time
Again to adjusting related process on corresponding heat-seal equipment after lower limit.
It should be noted that packaging bag described in the 4th kind of embodiment can refer to packaging bag described above application method and
Preparation method is implemented, and details are not described herein again.
The preparation method of technical solution in above-described embodiment is simple, conveniently, strong operability, compared to the prior art directly
It connects in such a way that high-isolation bag carries out simple seal, the method, which is more suitable for packing material in practical logistics, peculiar smell, bag in transport
The special case that body constantly expands.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above and disclosed herein but be not limited to similar functions
Technical characteristic replaced mutually and the technical solution that is formed.