CN103241456B

CN103241456B - Double-buffering inflatable packaging bag and manufacturing method thereof

Info

Publication number: CN103241456B
Application number: CN201310155546.XA
Authority: CN
Inventors: 须建明
Original assignee: 须建明
Current assignee: Lattice packaging technology (Jiangsu) Co., Ltd.
Priority date: 2013-04-28
Filing date: 2013-04-28
Publication date: 2014-07-09
Anticipated expiration: 2033-04-28
Also published as: CN103241456A

Abstract

The invention discloses a double-buffering inflatable packaging bag and a manufacturing method thereof. The double-buffering inflatable packaging bag comprises an outer bag, the outer bag is formed by an inflatable plastic clamping film and provided with a goods accommodating cavity, and one end of the outer bag is a goods inlet. The inflatable plastic clamping film is provided with multiple strip inflation chambers (13), and each strip inflation chamber (13) is communicated with a main inflation channel (7) through a one-way check valve. An inner bag structure composed of an auxiliary film is lined inside the goods accommodating cavity of the outer bag, and the edge of the auxiliary film is connected together with the edge of the goods inlet of the outer bag; and a certain distance between the bottom of the auxiliary film and the bottom of the outer bag is reserved, so that the bottom of the outer bag does not contact with the bottom of the auxiliary film after the outer bag is inflated. The inflatable packaging bag is made of five layers of plastic films by means of heat sealing and folding, is uninflated and can be folded optionally during production, storage and transportation, and is small in space occupation and reusable; and multiple-buffering effect can be formed locally so as to meet requirement on high local shock resistance of goods.

Description

Double buffering gas flushing pouch and manufacture method thereof

Technical field

The present invention relates to a kind of gas flushing pouch, is a kind of air bag packing for commodity protection against the tide, shockproof, anti-extrusion, protecting against shock.After inflation, can make article packings packing material and use, also can do inner six the protective pad use of article case, the retail packaging that more can do article outer packaging bag and directly make product.

Background technology

The many commodity particularly friable product such as electronic product, glasswork need to adopt polystyrene foamed, polyethylene foam cushion etc. to pad between packing chest and commodity in the time of storage, transportation, or with the direct package goods of expanded material, to reach shockproof, anti-extrusion, protecting against shock effect, prevent that commodity from damaging in the time of accumulating.Traditional polystyrene foamed (EPS) and polyethylene foams (EPE) based article, must just can be transported to user at manufacturer's foaming or after processing is processed and use, and huge being not easy to very much of foamed plastic volume after moulding transported and stored in a warehouse.For convenient transportation, the foaming in place class material of exploitation is mainly to utilize Polyurethane foam goods, at content side foaming and intumescing and form protection model.But the price of material is relatively high and on-the-spot equipment be there are certain requirements, require to be not suitable for large-scale pipeline product as the inner packing of electronic product in workman's efficiency and working strength simultaneously.Meanwhile, many drawback days of polystyrene foamed (EPS) based article are aobvious serious, become for people all dislike " white pollution ".The buffer product relatively only using in transit link short-term, the offal treatment of permanent polyphenyl blister pack brings gross pollution to environment, and as burning can produce noxious gas, and heap buried is not because corroding the destruction that produces geologic framework.

The improved air bag packing articles of one occurring in recent years; comprise an airbag and there is an inlet non return check valve; in airbag, inflate and prevent that in bag, gas backstreaming spills by inlet non return check valve; fully inflated airbag has the buffering effect of good apparatus with shock absorbing; with the airbag parcel commodity after inflation or be filled in commodity and packing chest between, to protect commodity not damaged.Unaerated when this air bag is produced and transported, only just inflation in the time of package goods, and be finished rear recoverable, and therefore overcoming the aforesaid drawbacks of traditional expanded material, material adopts plastic sheeting, also has moisture effect.As CN1903675A, this air bag is generally made up of two wide plastic sheetings and two narrow plastic sheetings, two wide plastic sheetings are placed in top layer, two narrow plastic sheetings are placed in interlayer, make two wide plastic sheetings form inflatable bag through heat-sealing, two narrow plastic sheetings are by the high temperature resistant ink of surface printing in opposite directions, be heat-sealed with two wide plastic sheetings and be bonded together, thereby the part of printing-ink can not seal the inlet non return check valve that forms not only separable formation free air diffuser but also the formation airtight effect of can fitting at this place.This air bag can be used as cushion blocking and uses or be filled between commodity and packing chest, or parcel commodity, also can be further through different folding and local heat-sealings, be formed on formation after inflation and can be directly enclosed within the packaging bag of commodity outside.

But, for friable products such as some precise electronic products or some glass, sometimes there is the shockproof requirement of higher shock resistance, adopt one deck air bag, to be attached to commodity surface to contact with commodity owing to playing the gas column of buffer action, impact energy still has most can pass to commodity by the gas column of direct contact, and therefore larger vibrations or impact and still commodity are caused to certain harm even can be flattened local gas column and directly impacted commodity.For improving buffering effect, although can adopt multilayer air bag package goods, cost is high, and packing time and inflationtime are longer.

Summary of the invention

Exist for existing air bag packing articles to compared with the problem of HI high impact effect shockproof effect scarce capacity, the object of the invention is to existing air bag to improve, a kind of double buffering gas flushing pouch is provided, the buffering of the impulsive force of this gas flushing pouch to a direction has double buffering structure, better apparatus with shock absorbing, has improved the cushioning ability at this position.

A kind of double buffering gas flushing pouch, comprise that by film formed article container chamber and the one end of being provided with of inflatable plastic folder be that article are put into mouthfuls 400 outer sack 100, inflatable plastic folder film has multiple bar shaped plenum chambers 13, and each bar shaped plenum chamber 13 communicates with inflation overall channel 7 by inlet non return check valve; In inner the going back in the article container chamber of outer sack 100, be lined with pocket structure in supporting film 200 formations, the article of supporting film 200 edges and described outer sack are put into mouthful 400 edges and are linked together, and certain distance is arranged at the outer sack of supporting film 200 distances from bottom 100 bottoms, so that outer sack 100 its bottom after inflation does not contact with supporting film 200 bottoms.Described outer sack 100, being provided with side opening near the both sides of the edge of sack bottom, outwards expands so that outer sack is provided with the part of opening after inflation.

Further, described outer sack 100 is to be made up of along the direction doubling vertical with bar shaped plenum chamber an inflating plastic feed collet film, near close outer sack bottom, every side is provided with the three horizontal hot threads 32 in road, horizontal hot thread 32 positions, San road, both sides are relative, laterally hot thread 32 is less than the width of bar shaped plenum chamber 13 in each its length of bar shaped plenum chamber place, so that hot thread 32 two ends and the certain venting channels of bar shaped plenum chamber 13 Edge preserving.

Further, described inflating plastic feed collet film is that two wide plastic sheetings 11,12 are placed in top layer, be placed in two narrow

plastic sheetings

21,22 structure with multiple bar shaped plenum chambers 13 that interlayer forms through heat-sealing, the attached inlet non return check valve of self-priming that each bar shaped plenum chamber 13 forms by described two narrow

plastic sheetings

21,22 communicates with flute shaped inflatable overall channel 7; Described two narrow plastic sheetings are all Polar Crystal Slabs, are to be compounded with self-adhesive layer 5 in a side of PE base material 6, and self-adhesive layer 5 is the PE that are added with maleic anhydride graft in EVA, and two narrow plastic sheetings the 21, the 22nd, are oppositely arranged with self-adhesive layer one side.

Further, wherein EVA consumption accounts for the 2%-4% of whole Polar Crystal Slab material total mass, and the PE of maleic anhydride graft accounts for the 0.5%-1% of whole Polar Crystal Slab material total mass.

Further, described PE base material, from the compound side of self-adhesive layer be followed successively by LDPE layer 4, HDPE layer or MLDPE layer 3, and

LDPE layer

1,2.

Further, account in addition the phenolic antioxidant of whole Polar Crystal Slab material total mass 0.3%-1% at described self-adhesive layer; Outermost layer LDPE adopts two-layer compound, and Surface L DPE layer 1 is added with the TNPP that accounts for whole Polar Crystal Slab material total mass 0.5%-1%, does not contain TNPP with HDPE layer or the adjacent LDPE layer 2 of MLDPE layer 3.

Further, in described HDPE layer or MLDPE layer 3, HDPE or MLDPE consumption are the 0.2-0.5% of whole Polar Crystal Slab material total mass.

Further, in two described narrow

plastic sheetings

21,22, the thickness that forms the narrow plastic sheeting 22 of a slice of inner space barrier layer is the 100%-135% that forms narrow plastic sheeting 21 thickness of another sheet of space outerpace barrier layer.

The present invention also provides a kind of manufacture method of described double buffering gas flushing pouch, it is characterized in that process is as follows:

(1) two wide plastic sheetings 11,12 are separately positioned on to the top layer, both sides of narrow

plastic sheeting

21,22, narrow

plastic sheeting

21,22 is arranged in the middle of two wide plastic sheetings 11,12, and is shorter than the certain distance of wide plastic sheeting 11,12;

(2) formation of inlet non return check valve: first by mould, narrow

plastic sheeting

21,22 and the wide plastic sheeting 11 of upper epidermis are pressed to inlet non return check valve filling channel heat-sealing status requirement heat-sealing, form air flue and inlet non return check valve;

(3) bar shaped plenum chamber forms: then by mould by wide upper strata plastic sheeting 11, the wide plastic sheeting 12 of narrow

plastic sheeting

21,22 and lower floor according to plenum chamber position heat-sealing simultaneously, form the partition between each plenum chamber 13, form non-return valve simultaneously and open heat seal point 40;

(4) formation of flute shaped inflatable overall channel 7:

hot thread

39,42,43 is sealed according to the heat seal position of flute shaped inflatable overall channel 7 through mould more simultaneously, so just formed flute shape air by-pass passage 7 and stealthy heat-sealing passage K;

(5) bar shaped plenum chamber back cover: carry out transversal heat seal at two wide plastic sheeting 11,12 tail ends through mould and form hot thread 34, just formed the bar shaped plenum chamber 13 of multiple discharges arranged side by side, form inflatable plastic folder film; Optionally seal along horizontal hot thread 32 as required;

(6) heat seal of liner supporting film 200: by hot-

sealing line

41,35, it is mutually bonded together with inflatable plastic folder film two ends respectively at the two ends of the liner supporting film 200 that is shorter than inflatable plastic folder film;

(7) formation of outer sack 100: the multiple bar shaped plenum chambers that have that form after a series of heat-sealings are arranged to the inflatable plastic folder film forming together with 200 doublings of liner supporting film, at least carry out secondary heat-sealing in the part of putting into mouthful near outer packaging bag item along predetermined edge sealing hot thread 31 positions along free edge edge, form near article and put into mouthful 400 both sides, one end free edges heat-sealings and have the outer sack 100 of side opening near two bottom sides free edge.

Beneficial effect of the present invention is:

(1) adopt inflation folder membrane structure as Packaging material, in the time of production and accumulating, do not need to inflate in advance, and be raw material owing to adopting plastic sheeting completely, can fold, so occupy little space, be conducive to produce and transportation recyclable recycling again.

(2) by liner supporting film being set and not contacting with outer sack bottom bottom supporting film; while making package goods, commodity are to be suspended in outer sack; along not being directly delivered to commodity by gas column with the impact of sack bottom direction; also will be through the double buffering of bag sidewalls gas column and supporting film; damping effect is better, has protected better commodity.

(3) raw material only has plastic sheeting, adopts mould heat-sealing to make, and production technology is simple.

(4) adopt the film of absorption polarity certainly of multi-layer compound structure as inlet non return check valve, good sealing effect, switching is swift in response.

(5) when described outer sack is provided with side opening near the both sides of the edge of sack bottom in certain distance, the part that when inflation, outer sack is provided with opening after inflation can outwards expand, make the outermost gas column inner side of outwards expanding can not directly contact commodity, this direction impact energy can not be directly passed to commodity, be able to effective attenuation, thereby also there is good protection effect at circumferencial direction.

Accompanying drawing explanation

Fig. 1 is the double buffering packaging bag schematic diagram of embodiments of the invention 1;

Fig. 2 is that the double buffering packaging bag of embodiment 1 is used view;

Fig. 3 is inflatable plastic folder film schematic diagram in embodiment 1;

Fig. 4 is bar shaped plenum chamber inflated condition schematic diagram;

Fig. 5 is the composite structure schematic diagram from absorption plastic sheeting

Fig. 6 to Fig. 8 is other embodiment schematic diagrams of double buffering packaging bag of the present invention.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, to help understanding content of the present invention.

In the present invention: " wide " and " narrow " in " wide plastic sheeting " and " narrow plastic sheeting " is relative concept, refer in both that one is compared that another is wide or narrow." free edge edge " refers to the marginal portion of connection, is for folded edge after folding." edge sealing hot thread " refer to folder film folding or overlapping after edge carry out heat seal to form the hot thread of secondary heat seal of bag, with the hot thread difference of carrying out heat seal in the time manufacturing folder film." folder film " refers to the structure of tool plenum space with dissection.Embodiment 1

The present embodiment is as a preferred forms, shown in Fig. 1 and Fig. 2, double buffering gas flushing pouch, base portion is that film formed article container chamber and the one end of being provided with of inflatable plastic folder is that article are put into mouthfuls 400 outer sack 100, inflatable plastic folder film has multiple bar shaped plenum chamber 13 structures as shown in Figure 4, and each bar shaped plenum chamber 13 communicates with inflation overall channel 7 by inlet non return check valve; In inner the going back in the article container chamber of outer sack 100, be lined with pocket structure in supporting film 200 formations, the article of supporting film 200 edges and described outer sack are put into mouthful 400 edges and are linked together, and certain distance is arranged at the supporting film outer sack of 200 distances from bottom 100 bottoms so that outer sack 100 after inflation as shown in Figure 2 its bottom do not contact with supporting film 200 bottoms.

In certain distance, be provided with side opening at outer sack 100 near the both sides of the edge of sack bottom, so that outer sack is provided with part outside expansion as Fig. 2 middle and lower part of opening after inflation.For ease of understanding the setting of " side opening ", shown in Fig. 3, Fig. 3 is that the membraneous material that is used to form outer sack 100 is inflating plastic feed collet film, inflating plastic feed collet film shown in a Fig. 3 is carried out to doubling along figure middle polyline 36, after doubling, carry out local heat seal by the edge sealing hot thread 31 at free edge place, inflating plastic feed collet film both sides, just the inflating plastic feed collet film levels after doubling can be bonded together and become the inflating plastic of both sides closure feed collet film cylinder, as can be seen from Figure 3 hot thread 31 length are about 1/4 left and right of inflating plastic feed collet film length, therefore after doubling, its lower part both sides free edge by direction shown in figure is not heat-sealed, making two-layer inflating plastic feed collet film after doubling is the structures that have opening in these both sides, region, become the outer bag substructure that a kind of lower part has side opening.Like this in bar shaped plenum chamber when inflation in inflating plastic feed collet film, air pressure make outer sack 100 as shown in Figure 2 mode outwards expand and open from opening part, make this part gas column exceed as shown in the figure top on vertical in the drawings.

For forming the T shape moulding shown in Fig. 2, as shown in Figure 3, outer sack 100 is to be made up of along broken line 36 doublings along the direction vertical with bar shaped plenum chamber an inflating plastic feed collet film, near close outer sack bottom, every side is provided with the three horizontal hot threads 32 in road, be respectively provided with the horizontal hot thread 32 in San road in broken line 36 bilateral symmetry, laterally hot thread 32 is less than the width of bar shaped plenum chamber 13 in each its length of bar shaped plenum chamber place, so that hot thread 32 two ends and the certain venting channels of bar shaped plenum chamber 13 Edge preserving.Like this when inflation as shown in Figure 2, this part can be in hot thread 32 places bending, by controlling the spacing between three road hot threads 32, can form the shape of T shown in Fig. 2 structure: bottom is the basal part 104 that horizontal gas column is arranged, the side wall portion 103,105 that the vertical gas column of both sides is arranged in, the skew wall portion 102,106 that the oblique gas column of both sides is arranged; And each portion gas column is communicated with as seen from Figure 3, can keep under normal circumstances identical air pressure.And liner supporting film is to be suspended in outer sack 100 as shown in Figure 1, 2.Like this when having while producing along the impact of basal part 104 vertical direction, power and energy transfer mode are to side wall portion 103 by

basal part

104, 105, and

skew wall portion

102, 106, be delivered to article along the straight wall portion on top again puts into after mouth always, through supporting film, transmission could arrive commodity 300 again, bang path length and direction constantly change, overwhelming majority impact energy is first constantly taken off once by the air in outer sack gas column and plastic sheeting absorption point, receiving assisted plastic film absorption decomposes once again, thereby play multi-buffer effect, better hurt is not bad for protection commodity.Equally, as shown in Figure 2 two double buffering packaging bags of the present invention are enclosed within on commodity 300, because this part outwards expands, commodity remain unsettled in the direction vertical with sidewall (horizontal direction in figure), first the impact being given a shock is to act on

side wall portion

103 or 105, and then can reach commodity be delivered to the straight wall portion on top by

skew wall portion

102 or 106 after, in transmittance process, most of energy is first by

sidewall

103, 106 absorptions, and then suction

skew wall portion

102, 106 absorb, finally also will be by absorbing from the straight wall of nearest another of commodity portion, thereby decay very soon, so this embodiment can both obtain good protection effect in all directions.

In addition, adopt the trend of this enforcement discal patch shaped inflatable chamber, in the time pressing the placement of direction shown in figure, because gas column is upright, pressure-bearing effect is more effective than gas column horizontal circle, is more conducive to the flying shore to commodity.The more important thing is, hot thread 32 length are less than bar shaped plenum chamber width, making hot thread 32 two ends and bar shaped plenum chamber edge is between hot thread 33, to retain certain venting channels, make air can inflate and form by this position equilibrium air pressure to whole bar shaped plenum chamber, not only make packaging bag two load bearing face air pressures identical, and the circulation of air runner that these hot thread 32 places diminish has decompression throttling action, in the time that a side is subject to suddenly impacting, gas can be pressed onto rapidly opposite side once, avoid gas column to be crushed rapidly and directly impact inner commodity, simultaneously not only there is portion gas can enter opposite side but also avoid this side gas column internal pressure that is hit too high and make this side plenum chamber explosion.

Inflating plastic feed collet film is for as shown in Figure 3 and Figure 4, two wide plastic sheetings 11,12 are placed in top layer and two narrow

plastic sheetings

21,22 are placed in interlayer, the structure with multiple bar shaped plenum chambers 13 forming through heat-sealing, the attached inlet non return check valve of self-priming that each bar shaped plenum chamber 13 forms by described two narrow

plastic sheetings

21,22 communicates with flute shaped inflatable overall channel 7; Wherein plenum chamber 13 is to form locular wall by wide plastic sheeting 11,12.The attached inlet non return check valve of self-priming that each bar shaped plenum chamber 13 forms at intake and exhaust end by two narrow

plastic sheetings

21,22 communicates with flute shaped inflatable overall channel 7.Flute shaped inflatable overall channel 7 is also to form between two wide plastic sheetings 11,12, because this overall channel is vertical with each bar shaped plenum chamber direction and corresponding each bar shaped plenum chamber direction all has the passage that can ventilate, the flute hole of similar flute is the same, is therefore called flute shaped inflatable overall channel.This like this inflatable plastic folder film as shown in Figure 4; by being heat sealing at the flute shaped inflatable overall channel 7 of two wide plastic sheeting 11,12 upper limbs; inflate to flute shaped inflatable overall channel 7; air pressure makes to adsorb separately the narrow

plastic sheeting

21,22 fitting together in inlet non return check valve and separates to form path; air can enter each bar shaped plenum chamber 13; bar shaped plenum chamber 13 expands and forms gas column, to protect commodity.Stop inflation between two narrow

plastic sheetings

21,22 in self-suction and plenum chamber under gaseous tension combined action, two

plastic sheetings

21,22 fit together again, and free air diffuser is closed air can not be leaked, and the higher laminating of pressure is tighter.Utilize the gas column apparatus with shock absorbing forming after inflation, reach the effect of extraordinary damping and protection commodity.

In order to improve the attached inlet non return check valve sealing effectiveness of self-priming, two narrow plastic sheetings that form inlet non return check valve adopt from absorption polarity plastic sheeting, as shown in Figure 5, are to be compounded with self-adhesive layer 5 in a side of PE base material 6, form one side from adsorption film material.Self-adhesive layer is the PE that is added with maleic anhydride graft in EVA.Adopting one deck PE base material one deck self-adhesive layer is the most basic Polar Crystal Slab material structure with adsorbability.This structure is because the less polarity raw material of consumption is compound at base material one side surface, polar material is evenly distributed, therefore adsorption affinity is evenly conducive to improve sealing effectiveness, simultaneously this side polarity be also conducive to by force bipolarity film when relative with polar surface adsorption affinity good, improve equally sealing effectiveness.Because the PE polarity of maleic anhydride graft is better than EVA, can adjust from absorption film surface adsorption affinity size by adjusting its content.

Further, PE base material also can adopt multilayer materials, as shown in Figure 5, by rising and be followed successively by LDPE layer 4 with the compound side of self-adhesive layer 5, HDPE layer or MLDPE layer 3, LDPE layer 2, the anti-aging protective cover 1 that LDPE+TNPP forms.Wherein HDPE layer or MLDPE layer 3 are because strength of material, rigidity are higher than LDPE, therefore can make this Polar Crystal Slab material there is appropriate rigidity, make that film is smooth not to crease easily, be conducive to the accurate printing of follow-up high temperature resistant ink and cut, and two-layer Polar Crystal Slab material forms inlet non return check valve smooth laminating no-watermark in the time of absorption.

Outermost layer adopts LDPE+TNPP composite bed, uses a small amount of TNPP can reach antioxidant ageing effect when improvement is surperficial to be contacted with air.Equally, also add antioxidant in self-adhesive layer 5, adopt the good phenolic antioxidant of polarity, addition is the 0.5-1% of whole Polar Crystal Slab material total mass.Because Polar Crystal Slab material just contacts with air on surface, the present invention only has two outermost layers to add antioxidant, can reach good antiageing effect in the time using small amount antioxidant.More particularly, if this membrane material is not recovered and abandons, in environment surface aging containing the part of antioxidant after, its inner ageing of plastics speed can be very fast, degraded speedup is conducive to reduce the dangerous time to environment.

This complex film adopts multi-layer co-extruded compound, and in product, the content of each component is controlled by raw material consumption, and therefore the former component content of the present invention is to calculate by material rate, rather than relatively calculates in each layer, will more be conducive to production control.In the present invention, in self-adhesive layer 1, EVA consumption accounts for the 2%-4% of whole Polar Crystal Slab material total mass, and the PE of maleic anhydride graft accounts for the 0.5%-1% of whole Polar Crystal Slab material total mass, and phenolic antioxidant accounts for whole Polar Crystal Slab material total mass 0.3-1%.In described HDPE layer or MLDPE layer, HDPE or MLDPE consumption are the 0.2-0.5% of whole Polar Crystal Slab material total mass.TNPP accounts for the total materials quality of whole Polar Crystal Slab material 0.5-1%.

For improving sealing effectiveness, as shown in Figure 4, in two described narrow

plastic sheetings

21,22, the thickness that forms a slice Polar Crystal Slab material 22 of inner space barrier layer is the 100%-135% that forms another sheet Polar Crystal Slab material 21 thickness of space outerpace barrier layer, and the barrier layer thickening is more conducive to provide sealing effectiveness.

This double buffering packaging bag in the present embodiment, can adopt in the following method and be formed by heat seal manufacture by plastic sheeting:

(1), with reference to shown in Fig. 3 and Fig. 4, formed by two wider wide plastic sheeting 11,12 and two narrow

plastic sheetings

21,22 of the narrower polarity with the mutual absorption property of internal layer of size.Narrow

plastic sheeting

21,22 adopts complex film shown in Fig. 5, and this complex film can form by coextrusion blow.Two wide plastic sheetings 11,12 are separately positioned on to the top layer, both sides of narrow

plastic sheeting

21,22, narrow

plastic sheeting

21,22 is arranged in the middle of two wide plastic sheetings 11,12, and be shorter than the certain distance of wide plastic sheeting 11,12, to form inflation overall channel 7 by wide plastic sheeting at an upper portion thereof, set by the size relationship of relative position shown in Fig. 1;

(2) formation of inlet non return check valve: first along hot thread 44, polarity

plastic sheeting

21,22 and upper epidermis plastic film 11 are pressed to inlet non return check valve filling channel heat-sealing status requirement heat-sealing by mould, form air flue and inlet non return check valve.

(3) bar shaped plenum chamber forms: then by mould by wide upper strata plastic sheeting 11, the narrow

plastic sheeting

21,22 of polarity and the wide plastic sheeting 12 of lower floor according to plenum chamber position according to the position of hot thread 33 heat-sealing simultaneously, form the partition between each air chamber, form non-return valve simultaneously and open heat seal point 40.Owing to there being the existence of resistant to elevated temperatures printing ink layer 37 between polarity

plastic sheeting

21,22, and pass through mould by narrow

plastic sheeting

21,22 and wide plastic sheeting 11 heat-sealings of upper epidermis, so mould can be once simultaneously by polarity plastic sheeting 21 and plastic sheeting 11 heat-sealings, by polarity plastic sheeting 22 and plastic sheeting 12 heat-sealings to heat seal point 40 positions.

(4) formation of flute shaped inflatable overall channel: through mould, the position of

hot thread

39,42,43 is sealed simultaneously again, so just form flute shape air by-pass passage 7 and can not be bonded as one with stealthy heat-sealing passage K(owing to there being high temperature-resistant printing ink), the effect of hot thread 39 is in the time of injecting compressed air, can make polarity

plastic sheeting

21 and 22 can open rapidly at unlatching heat seal point 40 places, form an airflow path, improve the efficiency of air Injection.

(5) carry out transversal heat seal through mould along hot thread 34 at two wide plastic sheeting 11,12 tail ends, just form the bar shaped plenum space of the media such as the air deposited of multiple discharges arranged side by side, form inflatable plastic folder film, but this schistose texture is only applicable to fill or parcel commodity.Want to form than the direct package goods of more complete bag shape structure, also need further processing.Certainly, optionally seal to form T shape structure along horizontal hot thread 32 as required.

(6) heat seal of liner supporting film 200: make its two ends pass through hot-

sealing line

41,35 heat seals with inflatable plastic folder film two ends respectively in conjunction with mode shown in Fig. 2 the liner supporting film 200 that is shorter than inflatable plastic folder film, it is bonded together mutually;

(7) formation of outer sack 100: the multiple bar shaped plenum chambers that have that form after a series of heat-sealings are arranged to the inflatable plastic folder film forming, together with liner supporting film along broken line 36 doublings, at least carrying out secondary heat-sealing in the part of placing near outer packaging bag item mouthful in predetermined edge sealing hot thread 31 positions along free edge edge, forming near article and put into mouthfuls 400 both sides, one end free edges heat-sealings and have the outer sack 100 of side opening near two bottom sides free edge.

Embodiment 2

As different from Example 1, be not reserved with side opening at outer sack near the both sides of the edge of sack bottom, all seal and form the outer sack that three side sealing closes by secondary, as shown in Figure 6, what this embodiment formed is to have unsettled liner supporting film 200 in outer sack 100 inside, top is that article are put into mouth 400, simple in structure, that the direction of being put into mouth by bottom along outer sack 100 to article is transmitted for the impact energy of sack bottom, transmit commodity through liner supporting film 200 again, although buffering effect is a little less than the mode of embodiment 1, but still will be good than the protection effect of only using outer sack 100 direct package goods many.The gas column that plenum chamber 13 forms be vertical arrange to improve vertical bearing capacity.

Embodiment 3

As Fig. 7, the direction that outer sack 100 plenum chambers 13 are gas column adopts horizontally disposed mode, this mode is at commodity when mode is placed as shown in Figure 7, in the time of identical plenum chamber specification and inflation pressure, bag sidewalls rigidity is slightly poor, flexible under commodity pressure, impact resistance reduces, and the protection effect that bottom is impacted is lower than mode shown in Fig. 2 and Fig. 6, but still than good many of the mode that does not adopt unsettled supporting film 200.It is for putting into commodity that article are put into mouth 400.

Embodiment 4

As shown in Figure 8, this embodiment is the mode that does not adopt hot thread 32 compared with embodiment 1, there is not specific crooked place in outer sack 100 in the time of inflation like this, therefore the curved structure of the large measure expansion in bottom, because liner supporting film 200 is still unsettled, and dilation is outwardly, still can obtain the good protective action of all directions.

Claims

1. a double buffering gas flushing pouch, comprise by inflatable plastic folder is film formed and be provided with article container chamber and one end is that article are put into the outer sack (100) of mouthful (400), inflatable plastic folder film has multiple bar shaped plenum chambers (13), and each bar shaped plenum chamber (13) communicates with inflation overall channel (7) by inlet non return check valve; In inner the going back in the article container chamber of outer sack (100), be lined with pocket in a supporting film (200) formation, the article of supporting film (200) edge and described outer sack are put into mouthful (400) edge and are linked together, and certain distance is arranged at the outer sack of supporting film (200) distance from bottom (100) bottom, so that outer sack (100) its bottom after inflation does not contact with supporting film (200) bottom; Described outer sack (100) is being provided with side opening near the both sides of the edge of sack bottom; Described inflatable plastic folder film is that two wide plastic sheetings (11,12) are placed in top layer, be placed in two narrow plastic sheetings (21,22) structure with multiple bar shaped plenum chambers (13) that interlayer forms through heat-sealing, the attached inlet non return check valve of self-priming that each bar shaped plenum chamber (13) forms by described two narrow plastic sheetings (21,22) communicates with flute shaped inflatable overall channel (7); Described two narrow plastic sheetings are all Polar Crystal Slabs, to be compounded with self-adhesive layer (5) in a side of PE base material (6), self-adhesive layer (5) is the PE that is added with maleic anhydride graft in EVA, and two narrow plastic sheetings (21,22) are to be oppositely arranged with self-adhesive layer one side.

2. double buffering gas flushing pouch as claimed in claim 1, it is characterized in that: described outer sack (100) is to be made up of along the direction doubling vertical with bar shaped plenum chamber an inflating plastic feed collet film, near close outer sack bottom, every side is provided with the three horizontal hot threads in road (32), the horizontal hot thread in San road, both sides (32) position is relative, and laterally hot thread (32) is less than the width of bar shaped plenum chamber (13) in each its length of bar shaped plenum chamber place.

3. double buffering gas flushing pouch as claimed in claim 1, is characterized in that: wherein EVA consumption accounts for the 2%-4% of whole Polar Crystal Slab material total mass, and the PE of maleic anhydride graft accounts for the 0.5%-1% of whole Polar Crystal Slab material total mass.

4. double buffering gas flushing pouch as claimed in claim 1, is characterized in that: described PE base material, from the compound side of self-adhesive layer be followed successively by LDPE layer (4), HDPE layer or MLDPE layer (3), and LDPE layer (1,2).

5. double buffering gas flushing pouch as claimed in claim 4, is characterized in that: the phenolic antioxidant that accounts in addition whole Polar Crystal Slab material total mass 0.3%-1% at described self-adhesive layer; Outermost layer LDPE adopts two-layer compound, and Surface L DPE layer (1) is added with the TNPP that accounts for whole Polar Crystal Slab material total mass 0.5%-1%, does not contain TNPP with HDPE layer or the adjacent LDPE layer (2) of MLDPE layer (3).

6. double buffering gas flushing pouch as claimed in claim 4, is characterized in that: in described HDPE layer or MLDPE layer (3), HDPE or MLDPE consumption are the 0.2-0.5% of whole Polar Crystal Slab material total mass.

7. double buffering gas flushing pouch as claimed in claim 1, it is characterized in that: in two described narrow plastic sheetings (21,22), the thickness that forms the narrow plastic sheeting of a slice (22) of inner space barrier layer is the 100%-135% that forms the narrow plastic sheeting of another sheet (21) thickness of space outerpace barrier layer.

8. a manufacture method for double buffering gas flushing pouch described in claim 1, is characterized in that process is as follows:

(1) two wide plastic sheetings (11,12) are separately positioned on to the top layer, both sides of narrow plastic sheeting (21,22), narrow plastic sheeting (21,22) is arranged in the middle of two wide plastic sheetings (11,12), and is shorter than the certain distance of wide plastic sheeting (11,12);

(2) formation of inlet non return check valve: first narrow plastic sheeting (21,22) and the wide plastic sheeting of upper epidermis (11) are pressed to inlet non return check valve filling channel heat-sealing status requirement heat-sealing, formed air flue and inlet non return check valve;

(3) bar shaped plenum chamber forms: then by wide upper strata plastic sheeting (11), narrow plastic sheeting (21,22) and the wide plastic sheeting of lower floor (12) according to plenum chamber position while heat-sealing, form the partition between each plenum chamber (13), form non-return valve simultaneously and open heat seal point (40);

(4) formation of flute shaped inflatable overall channel (7): according to the heat seal position of flute shaped inflatable overall channel (7), hot thread (39,42,43) is sealed again simultaneously, so just formed flute shape air by-pass passage (7) and stealthy heat-sealing passage (K);

(5) bar shaped plenum chamber back cover: carry out transversal heat seal at two wide plastic sheetings (11,12) tail end through mould and form hot thread (34), just formed the bar shaped plenum chamber (13) of multiple discharges arranged side by side, form inflatable plastic folder film; Optionally seal along horizontal hot thread (32) as required;

(6) heat seal of liner supporting film (200): by hot-sealing line (41,35), it is mutually bonded together with inflatable plastic folder film two ends respectively at the two ends of the plastic inner lining supporting film (200) that is shorter than inflatable plastic folder film;

(7) formation of outer sack (100): the inflatable plastic forming after a series of heat-sealings is pressed from both sides to film together with liner supporting film (200) doubling, at least carry out secondary heat-sealing in the part of putting into mouthful near outer packaging bag item in predetermined edge sealing hot thread (31) position along free edge edge, form near article and put into mouthful (400) both sides, one end free edge heat-sealing and have the outer sack (100) of side opening near two bottom sides free edge.