CN103241456A - Double-buffering inflatable packaging bag and manufacturing method thereof - Google Patents
Double-buffering inflatable packaging bag and manufacturing method thereof Download PDFInfo
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- CN103241456A CN103241456A CN201310155546XA CN201310155546A CN103241456A CN 103241456 A CN103241456 A CN 103241456A CN 201310155546X A CN201310155546X A CN 201310155546XA CN 201310155546 A CN201310155546 A CN 201310155546A CN 103241456 A CN103241456 A CN 103241456A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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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
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.Can make article packing packing material after the inflation and use, also can do inner six the anti-protection pad usefulness of article case, more can do the retail packaging that the article outer packaging bag is directly made product.
Background technology
Many commodity particularly friable product such as electronic product, glasswork need adopt pads such as polystyrene foamed, polyethylene foam cushion between packing chest and commodity when storage, transportation, perhaps with the direct package goods of expanded material, to reach shockproof, anti-extrusion, protecting against shock effect, prevent that commodity from damaging when accumulating.Traditional polystyrene foamed (EPS) and polyethylene foams (EPE) based article just can be transported to the user after must handling at manufacturer's foaming or through processing and use, and the foamed plastic volume after the moulding is huge to be not easy to transport and storage very much.Transporting and the foaming in place class material of exploitation for convenience, mainly is to utilize the Polyurethane foam goods, also forms at content next door foaming and intumescing and protects model.But the price of material is higher relatively and the equipment at scene had certain requirement, requires to be not suitable for the inner packing of large-scale pipeline product such as electronic product simultaneously at workman's efficient and working strength.Simultaneously, show serious many drawback days of polystyrene foamed (EPS) based article, become for the people all dislike " white pollution ".Relatively only at the buffer product of transit link short-term use, the offal treatment of permanent polyphenyl blister pack brings gross pollution to environment, can produce noxious gas as burning, and heap buries the destruction that produces geologic framework because not corroding.
A kind of improved air bag packing articles of Chu Xianing in recent years; comprise an airbag and have a unidirectional non-return valve; by the inflation and prevent that bag interior gas backstreaming from spilling in the airbag of unidirectional non-return valve; fully inflated airbag has the buffering effect of good absorption impact energy; with the airbag parcel commodity after the inflation or be filled in commodity and packing chest between, be not damaged with the protection commodity.Unaerated when this air bag production and transportation is only just inflated when package goods, and uses up the recyclable utilization in back, has therefore overcome the aforesaid drawbacks of traditional expanded material, and material adopts plastic sheeting, also has moisture effect.As CN1903675A, this air bag generally is made up of two wide plastic sheetings and two narrow plastic sheetings, two wide plastic sheetings place the top layer, two narrow plastic sheetings place interlayer, make two wide plastic sheetings form inflatable bag through heat-sealing, two narrow plastic sheetings then pass through at the high temperature resistant printing 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 to form not only separable formation free air diffuser at this place but also can fit and forms the unidirectional non-return valve of airtight effect.This air bag can be used as cushion blocking and uses or be filled between commodity and the packing chest, perhaps wraps up commodity, also can be formed on the packaging bag that inflation back formation can directly be enclosed within the commodity outside further through different folding and local heat-sealings.
Yet, for friable products such as some precise electronic products or some glass, sometimes has the shockproof requirement of higher shock resistance, adopt one deck air bag, because the gas column of a buffer action is to be attached to the commodity surface to contact with commodity, impact energy still has most to pass to commodity by the gas column by direct contact, therefore bigger vibrations or impact and still commodity are caused certain harm, even can flatten local gas column and directly impact commodity.Be the raising buffering effect, though can adopt multilayer air bag package goods, the cost height, packing time and inflationtime are longer.
Summary of the invention
The problem to higher impact effect shockproof effect scarce capacity at existing air bag packing articles existence, the objective of the invention is to existing air bag is improved, a kind of double buffering gas flushing pouch is provided, this gas flushing pouch has the double buffering structure to the buffering of the impulsive force of a certain direction, can better absorb impact energy, improve the cushioning ability at this position.
A kind of double buffering gas flushing pouch, comprise that by film formed article container chamber and the 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 a plurality of bar shaped plenum chambers 13, and each bar shaped plenum chamber 13 communicates with inflation overall channel 7 by unidirectional non-return valve; In going back, the inside, article container chamber of outer sack 100 is lined with pocket structure in a 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.
Further, described outer sack 100 is 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 of along the direction doubling vertical with the bar shaped plenum chamber an aerated plastic folder film, every side is provided with the horizontal hot thread 32 in three roads near close outer sack bottom, horizontal hot thread 32 positions, three roads of both sides are relative, laterally hot thread 32 is at the width of each its length of bar shaped plenum chamber place less than bar shaped plenum chamber 13, so that hot thread 32 two ends and bar shaped plenum chamber 13 edges keep certain venting channels.
Further, described aerated plastic folder film is that two wide plastic sheetings 11,12 place the top layer, with the structure with a plurality of bar shaped plenum chambers 13 that two narrow plastic sheetings 21,22 place interlayer to form through heat-sealing, each bar shaped plenum chamber 13 communicates with flute shaped inflatable overall channel 7 to non-return valve by described two narrow plastic sheetings 21, the 22 self-priming coupons that form; Described two narrow plastic sheetings all are polarity films, 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 21, the 22nd are oppositely arranged with self-adhesive layer one side.
Further, wherein the EVA consumption accounts for the 2%-4% of whole polarity membrane material total mass, and the PE of maleic anhydride graft accounts for the 0.5%-1% of whole polarity membrane material total mass.
Further, described PE base material is from being followed successively by LDPE layer 4, HDPE layer or MLDPE layer 3 and LDPE layer 1,2 with the compound side of self-adhesive layer.
Further, account for the phenolic antioxidant of whole polarity membrane material total mass 0.3%-1% in addition 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 polarity membrane material total mass 0.5%-1%, and the LDPE layer 2 adjacent with HDPE layer or MLDPE layer 3 do not contain TNPP.
Further, in described HDPE layer or the MLDPE layer 3, HDPE or MLDPE consumption are the 0.2-0.5% of whole polarity membrane material total mass.
Further, in two described narrow plastic sheetings 21,22, the thickness that constitutes the narrow plastic sheeting 22 of a slice of inside and outside space obstacle layer is the 100%-135% of narrow plastic sheeting 21 thickness of another sheet.
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 narrow plastic sheeting 21,22 top layer, both sides, narrow plastic sheeting 21,22 is arranged in the middle of two wide plastic sheetings 11,12, and is shorter than wide plastic sheeting 11,12 certain distances;
(2) formation of unidirectional non-return valve: at first by mould with narrow plastic sheeting 21,22 and the wide plastic sheeting of upper epidermis 11 by unidirectional non-return valve filling channel heat-sealing status requirement heat-sealing, form air flue and unidirectional non-return valve;
(3) the bar shaped plenum chamber forms: then by mould with wide plastic sheeting 11, narrow plastic sheeting 21,22 and wide plastic sheeting 12 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: through the heat seal position of mould according to flute shaped inflatable overall channel 7 hot thread 39,42,43 is sealed simultaneously again, 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 ends through mould and form hot thread 34, just formed the bar shaped plenum chamber 13 of a plurality of dischargings arranged side by side, constitute inflatable plastic folder film; Optionally seal along horizontal hot thread 32 as required;
(6) heat seal of liner supporting film 200: the two ends that will be shorter than the liner supporting film 200 of inflatable plastic folder film are bonded together it with inflatable plastic folder film two ends by heat- sealing line 41,35 respectively mutually;
(7) formation of outer sack 100: will press from both sides film together with 200 doublings of liner supporting film through the inflatable plastic that a plurality of bar shaped plenum chambers arrangements of having of a series of heat-sealings back formation form, at least carry out the secondary heat-sealing along predetermined edge sealing hot thread 31 positions in the part of putting into mouth near the outer packaging bag item along the free edge edge, form the outer sack 100 that close article are put into mouthful 400 1 end both sides free edges heat-sealings and side opening is arranged near the two bottom sides free edge.
Beneficial effect of the present invention is:
(1) adopts inflation folder membrane structure as the commodity packaging material, producing and do not needing to inflate in advance during accumulating, and because to adopt plastic sheeting fully be raw material, can fold, so occupy little space, be conducive to produce and transport, again recyclable recycling.
(2) by the liner supporting film being set and bottom supporting film, not contacting with outer sack bottom; commodity are to be suspended in the outer sack when making package goods; can not be directly delivered to commodity by gas column along the impact with the sack bottom direction; also will be through the double buffering of bag sidewalls gas column and supporting film; damping effect is better, has protected commodity better.
(3) raw material has only plastic sheeting, adopts the mould heat-sealing to make, and production technology is simple.
(4) film of absorption polarity certainly that adopts multi-layer compound structure is as unidirectional non-return valve, good sealing effect, and switching is swift in response.
(5) in certain distance, be provided with side opening when the both sides of the edge of the close sack of described outer sack bottom, the part that outer sack is provided with opening during inflation after inflation can outwards expand, make the outermost gas column inboard of outwards expanding directly to contact commodity, this direction impact energy can not be directly passed to commodity, be able to effective attenuation, thereby also have protection effect preferably at circumferencial direction.
Description of drawings
Fig. 1 is the double buffering packaging bag scheme drawing of embodiments of the invention 1;
Fig. 2 is that view is used in the double buffering packaging bag of embodiment 1;
Fig. 3 is inflatable plastic folder film scheme drawing among the embodiment 1;
Fig. 4 is bar shaped plenum chamber inflated condition scheme drawing;
Fig. 5 is for adsorbing the composite structure scheme drawing of plastic sheeting certainly
Fig. 6 to Fig. 8 is other embodiment scheme drawings 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, refers among both that one is compared that another is wide or narrow." free edge edge " refers to the marginal portion of connection, is for the folded edge of folding back." edge sealing hot thread " refer to the folder film folding or overlapping after the edge carry out heat seal with the hot thread of the secondary heat seal that forms bag, with the hot thread difference of when making the folder film, carrying out heat seal." folder film " refers to have the structure of the plenum space of interlayer.
Present embodiment is as a preferred forms, in conjunction with illustrated in figures 1 and 2, the double buffering gas flushing pouch, base portion is that film formed article container chamber and the 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 a plurality of 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 unidirectional non-return valve; In going back, the inside, article container chamber of outer sack 100 is lined with pocket structure in a 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 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 bottom the sack, 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 ", in conjunction with shown in Figure 3, Fig. 3 is that the membraneous material that is used to form outer sack 100 is aerated plastic folder film, an aerated plastic folder film shown in Figure 3 is carried out doubling along figure middle polyline 36, edge sealing hot thread 31 by aerated plastic folder free edge place, film both sides after the doubling carries out local heat seal, just the folder of the aerated plastic after doubling film levels can be bonded together and become the aerated plastic of both sides closure folder film tube, as can be seen from Figure 3 hot thread 31 length are about about 1/4 of aerated plastic folder film length, therefore its lower part both sides free edge by direction shown in the figure is not heat-sealed after the doubling, make that two-layer aerated plastic folder film is structures that opening is arranged in these both sides, zone after the doubling, become the outer bag substructure that a kind of lower part has side opening.Like this when the bar shaped plenum chamber inflation in aerated plastic folder 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 surpass top as shown in the figure on vertical in the drawings.
For forming T shape moulding shown in Figure 2, as shown in Figure 3, outer sack 100 is to be made of along broken line 36 doublings along the direction vertical with the bar shaped plenum chamber an aerated plastic folder film, every side is provided with the horizontal hot thread 32 in three roads near close outer sack bottom, namely at the horizontal hot thread 32 in three roads that broken line 36 bilateral symmetry respectively are provided with, laterally hot thread 32 is at the width of each its length of bar shaped plenum chamber place less than bar shaped plenum chamber 13, so that hot thread 32 two ends and bar shaped plenum chamber 13 edges keep certain venting channels.Like this when inflation as shown in Figure 2, this part can bend at hot thread 32 places, by controlling the spacing between the three road hot threads 32, then can form T shape structure shown in Figure 2: the 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 gas column is communicated with as seen from Figure 3, can keep identical air pressure under the normal circumstances.And the liner supporting film is to be suspended in the outer sack 100 as shown in Figure 1, 2.Like this when the impact along basal part 104 vertical direction produces; 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 after article put into mouth along the straight wall portion on top more always; transmission could arrive commodity 300 through supporting film again; bang path length and direction constantly change; overwhelming majority impact energy is constantly taken off once by the air in the outer sack gas column and plastic sheeting absorption branch earlier; receiving the assisted plastic film absorption again decomposes once; thereby play the multi-buffer effect, better protection commodity not hurt are bad.Equally; as shown in Figure 2 two double buffering packaging bags of the present invention are enclosed within on the commodity 300; because this part outwards expands; commodity remain unsettled in the direction vertical with sidewall (horizontal direction among the figure); the impact that is given a shock at first 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; most of energy is at first by sidewall 103 in the transmittance process; 106 absorptions; and then suction skew wall portion 102; 106 absorb; at last also will be by absorbing from the straight wall of nearest another of commodity portion; thereby very fast decay, so this embodiment can both obtain the better protect effect on all directions.
In addition, adopt the trend of this enforcement discal patch shaped inflatable chamber, when pressing the placement of direction shown in the figure, because gas column is upright, the pressure-bearing effect is more effective than gas column horizontal circle, more is conducive to the unsettled support 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 to keep certain venting channels between the hot thread 33, make air give whole bar shaped plenum chamber inflation and to form equilibrium air pressure by this position, make that not only packaging bag two load bearing face air pressures are identical, and the airiness runner that these hot thread 32 places diminish has the decompression throttling action, gas can be pressed onto opposite side rapidly once when a side is subjected to impacting suddenly, avoid gas column to be crushed rapidly directly impacting inner commodity, not only have portion gas can enter opposite side simultaneously but also avoid this side gas column internal pressure that is hit too high and make this side plenum chamber explosion.
Aerated plastic folder film is for as shown in Figure 3 and Figure 4, two wide plastic sheetings 11,12 place top layer and two narrow plastic sheetings 21,22 to place interlayer, through the structure with a plurality of bar shaped plenum chambers 13 that heat-sealing forms, each bar shaped plenum chamber 13 communicates with flute shaped inflatable overall channel 7 to non-return valve by described two narrow plastic sheetings 21, the 22 self-priming coupons that form; Wherein plenum chamber 13 is to form locular wall by wide plastic sheeting 11,12.Each bar shaped plenum chamber 13 communicates with flute shaped inflatable overall channel 7 to non-return valve by two narrow plastic sheetings 21, the 22 self-priming coupons that form at the intake and exhaust end.Flute shaped inflatable overall channel 7 also is to form between two wide plastic sheetings 11,12, because vertical with each bar shaped plenum chamber direction and corresponding each the bar shaped plenum chamber direction of this overall channel all has the passage that can ventilate, the flute hole of similar flute is the same, therefore is called flute shaped inflatable overall channel.This like this inflatable plastic folder film as shown in Figure 4; by the flute shaped inflatable overall channel 7 of heat seal at two wide plastic sheetings 11,12 upper limbs; to 7 inflations of flute shaped inflatable overall channel; air pressure makes adsorbs the narrow plastic sheeting 21,22 that fits together in the unidirectional non-return valve separately and separates to form path; air can enter each bar shaped plenum chamber 13; bar shaped plenum chamber 13 expands and forms gas column, with the protection commodity.Stop inflation between two narrow plastic sheetings 21,22 in self-suction and the plenum chamber under the gaseous tension combined action, two plastic sheetings 21,22 fit together again, free air diffuser are closed air can not be leaked, and the more high applying of pressure is more tight.The gas column that utilizes the inflation back to form absorbs impact energy, reaches the effect of extraordinary damping and protection commodity.
In order to improve the self-priming coupon to the non-return valve sealing effectiveness, two narrow plastic sheetings that constitute unidirectional non-return valve adopt from adsorbing the 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 single face from the absorbed 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 polarity membrane 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 evenly is conducive to improve sealing effectiveness, simultaneously this side polarity also be conducive to by force the bipolarity film when relative with polar surface adsorption affinity good, improve sealing effectiveness equally.Because the PE polarity of maleic anhydride graft is better than EVA, can adjust from adsorbing film surface adsorption affinity size by adjusting its content.
Further, the PE base material also can adopt multilayer materials, as shown in Figure 5, is followed successively by LDPE layer 4, HDPE layer or MLDPE layer 3, LDPE layer 2, the anti-aging protective cover 1 that LDPE+TNPP constitutes by rising with the compound side of self-adhesive layer 5.Wherein HDPE layer or MLDPE layer 3 are owing to strength of material, rigidity are higher than LDPE, therefore can make this polarity membrane material have the rigidity of appropriateness, make that film is smooth not to crease easily, be conducive to the accurate printing of follow-up high temperature resistant printing ink and cut, and two-layer polarity membrane material constitutes the smooth applying when adsorbing of unidirectional non-return valve and do not have watermark.
Outermost layer adopts the LDPE+TNPP composite bed, uses a spot 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 polarity phenolic antioxidant preferably, addition is the 0.5-1% of whole polarity membrane material total mass.Because polarity membrane material just surface contact with air, the present invention has only two outermost layers to add antioxidant, can reach when using than antioxidant on a small quantity antiageing effect preferably.More particularly, if this membrane material is not recovered and abandons, after the surperficial part that contains antioxidant wore out in environment, its inner ageing of plastics speed can be very fast, and the degraded speedup is conducive to reduce the dangerous time to environment.
This complex film adopts multi-layer co-extruded compound, and the content of each component is controlled by the raw material consumption in the product, so the former component content of the present invention is to calculate by material rate, rather than by relatively calculating in each layer, will more be conducive to production control.Among the present invention, the EVA consumption accounts for the 2%-4% of whole polarity membrane material total mass in the self-adhesive layer 1, and the PE of maleic anhydride graft accounts for the 0.5%-1% of whole polarity membrane material total mass, and phenolic antioxidant accounts for whole polarity membrane material total mass 0.3-1%.HDPE or MLDPE consumption are the 0.2-0.5% of whole polarity membrane material total mass in described HDPE layer or the MLDPE layer.TNPP accounts for the total materials quality of whole polarity membrane material 0.5-1%.
For improving sealing effectiveness, as shown in Figure 4, in two described narrow plastic sheetings 21,22, the thickness that constitutes a slice polarity membrane material 22 of inside and outside space obstacle layer is the 100%-135% of another sheet polarity membrane material 21 thickness, and the barrier layer that thickens more is conducive to provide sealing effectiveness.
This double buffering packaging bag in the present embodiment, can adopt in the following method and formed by the heat seal manufacturing by plastic sheeting:
(1) with reference to Fig. 3 and shown in Figure 4, formed by the wideer wide plastic sheeting 11 of two sizes, 12 and two narrow plastic sheetings 21 of the narrower polarity with the mutual absorption property of internal layer, 22.Narrow plastic sheeting 21,22 adopts complex film shown in Figure 5, and this complex film can form by coextrusion blow.Two wide plastic sheetings 11,12 are separately positioned on narrow plastic sheeting 21,22 top layer, both sides, narrow plastic sheeting 21,22 is arranged in the middle of two wide plastic sheetings 11,12, and be shorter than wide plastic sheeting 11,12 certain distances, in order 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 unidirectional non-return valve: at first by mould along hot thread 44 with polarity plastic sheeting 21,22 and upper epidermis plastic film 11 by unidirectional non-return valve filling channel heat-sealing status requirement heat-sealing, form air flue and unidirectional non-return valve.
(3) the bar shaped plenum chamber forms: then by mould with wide plastic sheeting 11, the narrow plastic sheeting 21 of polarity, 22 and wide plastic sheeting 12 according to the 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.Because the existence of resistant to elevated temperatures printing ink layer 37 is arranged between the polarity plastic sheeting 21,22, and by mould with narrow plastic sheeting 21,22 and wide plastic sheeting 11 heat-sealings of upper epidermis, so mould can be once simultaneously with polarity plastic sheeting 21 and plastic sheeting 11 heat-sealings, with 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 hot thread 39,42,43 position are sealed simultaneously again, because being arranged, high temperature-resistant printing printing ink can not be bonded as one with stealthy heat-sealing passage K(with regard to having formed flute shape air by-pass passage 7 like this), the effect of hot thread 39 is when injecting compressed air, polarity plastic sheeting 21 and 22 can be opened rapidly at unlatching heat seal point 40 places, form an airflow path, improve the efficient that air injects.
(5) carry out transversal heat seal through mould along hot thread 34 at two wide plastic sheetings 11,12 tail ends, just formed the bar shaped plenum space of the media such as the air deposited of a plurality of dischargings arranged side by side, form inflatable plastic folder film, but this schistose texture only is applicable to filling or parcel commodity.Want to form the more complete direct package goods of 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: the liner supporting film 200 that will be shorter than inflatable plastic folder film makes its two ends pass through heat- sealing line 41,35 heat seals with inflatable plastic folder film two ends respectively in conjunction with mode shown in Figure 2, and it is bonded together mutually;
(7) formation of outer sack 100: will arrange the inflatable plastic folder film that forms through a plurality of bar shaped plenum chambers that have that a series of heat-sealings back forms, together with the liner supporting film along broken line 36 doublings, at least carry out the secondary heat-sealing in predetermined edge sealing hot thread 31 positions in the part of placing near the outer packaging bag item mouthful along the free edge edge, form near article and put into mouthful 400 1 end both sides free edges heat-sealings and the outer sack 100 of side opening is arranged near the two bottom sides free edge.
As different from Example 1, be not reserved with side opening at outer sack near the both sides of the edge bottom the sack, all form the outer sack that three side sealing closes by the secondary heat-sealing, as shown in Figure 6, what this embodiment formed is in outer sack 100 inside unsettled liner supporting film 200 to be arranged, top is that article are put into mouth 400, simple in structure, impact energy for the sack bottom is the direction transmission of being put into mouth by the bottom along outer sack 100 to article, transmit commodity through liner supporting film 200 again, though 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.
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, the bag sidewalls rigidity is slightly poor when identical plenum chamber specification and inflation pressure, flexible under commodity pressure, impact resistance reduces, and the protection effect that the bottom is impacted is lower than Fig. 2 and mode shown in Figure 6, but still than good many of the mode that does not adopt unsettled supporting film 200.It is be used to putting into commodity that article are put into mouth 400.
As shown in Figure 8, it is the mode that does not adopt hot thread 32 that this embodiment compares with embodiment 1, there is not specific crooked place in outer sack 100 when inflation like this, so curved structure of the big measure expansion in bottom, because liner supporting film 200 is still unsettled, and dilation outwards protrudes, and still can obtain all directions protective action preferably.
Claims (10)
1. double buffering gas flushing pouch, comprise by inflatable plastic folder is film formed and be provided with the article container chamber and an end is that article are put into the outer sack (100) of mouthful (400), inflatable plastic folder film has a plurality of bar shaped plenum chambers (13), and each bar shaped plenum chamber (13) communicates with inflation overall channel (7) by unidirectional non-return valve; In going back, the inside, article container chamber of outer sack (100) is lined with pocket in a supporting film (200) formation, the article of supporting film (200) edge and described outer sack are put into mouthful (a 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.
2. double buffering gas flushing pouch as claimed in claim 1 is characterized in that: described outer sack (100) is being provided with side opening near the both sides of the edge of sack bottom.
3. double buffering gas flushing pouch as claimed in claim 2, it is characterized in that: described outer sack (100) is to be made of along the direction doubling vertical with the bar shaped plenum chamber an aerated plastic folder film, every side is provided with the horizontal hot threads in three roads (32) near close outer sack bottom, the horizontal hot threads in three roads (32) position of both sides is relative, and laterally hot thread (32) is at the width of each its length of bar shaped plenum chamber place less than bar shaped plenum chamber (13).
4. as described double buffering gas flushing pouch one of in the claim 1 to 3, it is characterized in that: described inflatable plastic folder film is that two wide plastic sheetings (11,12) place the top layer, with the structure with a plurality of bar shaped plenum chambers (13) that two narrow plastic sheetings (21,22) place interlayer to form through heat-sealing, each bar shaped plenum chamber (13) communicates with flute shaped inflatable overall channel (7) to non-return valve by the self-priming coupon that described two narrow plastic sheetings (21,22) form; Described two narrow plastic sheetings all are polarity films, be 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.
5. double buffering gas flushing pouch as claimed in claim 4, it is characterized in that: wherein the EVA consumption accounts for the 2%-4% of whole polarity membrane material total mass, and the PE of maleic anhydride graft accounts for the 0.5%-1% of whole polarity membrane material total mass.
6. double buffering gas flushing pouch as claimed in claim 4 is characterized in that: described PE base material, and from being followed successively by LDPE layer (4), HDPE layer or MLDPE layer (3) and LDPE layer (1,2) with the compound side of self-adhesive layer.
7. double buffering gas flushing pouch as claimed in claim 6 is characterized in that: the phenolic antioxidant that accounts for whole polarity membrane material total mass 0.3%-1% at described self-adhesive layer in addition; Outermost layer LDPE adopts two-layer compound, and Surface L DPE layer (1) is added with the TNPP that accounts for whole polarity membrane material total mass 0.5%-1%, and the LDPE layer (2) adjacent with HDPE layer or MLDPE layer (3) do not contain TNPP.
8. double buffering gas flushing pouch as claimed in claim 6, it is characterized in that: in described HDPE layer or the MLDPE layer (3), HDPE or MLDPE consumption are the 0.2-0.5% of whole polarity membrane material total mass.
9. double buffering gas flushing pouch as claimed in claim 4, it is characterized in that: in two described narrow plastic sheetings (21,22), the thickness that constitutes the narrow plastic sheeting of a slice (22) of inside and outside space obstacle layer is the 100%-135% of the narrow plastic sheeting of another sheet (21) thickness.
10. the manufacture method of the described double buffering gas flushing pouch of claim 1 is characterized in that process is as follows:
(1) two wide plastic sheetings (11,12) is separately positioned on 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 unidirectional non-return valve: at first narrow plastic sheeting (21,22) and the wide plastic sheeting of upper epidermis (11) are sealed the status requirement heat-sealing by unidirectional non-return valve filling channel, form air flue and unidirectional non-return valve;
(3) the bar shaped plenum chamber forms: then with wide plastic sheeting (11), narrow plastic sheeting (21,22) and wide plastic sheeting (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): the heat seal position according to flute shaped inflatable overall channel (7) seals simultaneously to hot thread (39,42,43) again, has 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 a plurality of dischargings arranged side by side, constitute inflatable plastic folder film; Optionally seal along horizontal hot thread (32) as required;
(6) heat seal of liner supporting film (200): the two ends that will be shorter than the plastic inner lining supporting film (200) of inflatable plastic folder film are bonded together it with inflatable plastic folder film two ends by heat-sealing line (41,35) respectively mutually;
(7) formation of outer sack (100): will press from both sides film together with liner supporting film (200) doubling through the inflatable plastic that a series of heat-sealings back forms, at least carry out the secondary heat-sealing in predetermined edge sealing hot thread (31) position in the part of putting into mouth near the outer packaging bag item along the free edge edge, formation is put into mouth (400) one end both sides free edges heat-sealings near article and the outer sack (100) of side opening is arranged near the two bottom sides free edge.
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| CN201310155546.XA CN103241456B (en) | 2013-04-28 | 2013-04-28 | Double-buffering inflatable packaging bag and manufacturing method thereof |
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| CN201310155546.XA CN103241456B (en) | 2013-04-28 | 2013-04-28 | Double-buffering inflatable packaging bag and manufacturing method thereof |
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| CN106865004A (en) * | 2017-03-01 | 2017-06-20 | 顺丰速运有限公司 | A kind of buffering package |
| CN108039162A (en) * | 2017-12-20 | 2018-05-15 | 许昌学院 | Flute with packaging bag |
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| CN110217437A (en) * | 2019-05-29 | 2019-09-10 | 温州大学瓯江学院 | Packaging plastic bags method |
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| CN103241456B (en) | 2014-07-09 |
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