CN102975973A - High-sealing-performance envelope - Google Patents
High-sealing-performance envelope Download PDFInfo
- Publication number
- CN102975973A CN102975973A CN2012105779554A CN201210577955A CN102975973A CN 102975973 A CN102975973 A CN 102975973A CN 2012105779554 A CN2012105779554 A CN 2012105779554A CN 201210577955 A CN201210577955 A CN 201210577955A CN 102975973 A CN102975973 A CN 102975973A
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- Prior art keywords
- envelope
- big envelope
- camouflage
- layer
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000463 material Substances 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 238000000576 coating method Methods 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 14
- 239000005030 aluminium foil Substances 0.000 claims description 12
- 229920002635 polyurethane Polymers 0.000 claims description 10
- 239000004814 polyurethane Substances 0.000 claims description 10
- 239000004952 Polyamide Substances 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 9
- 229920002647 polyamide Polymers 0.000 claims description 9
- -1 polyethylene terephthalate Polymers 0.000 claims description 9
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 9
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 9
- 238000007514 turning Methods 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000000565 sealant Substances 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 238000003860 storage Methods 0.000 abstract description 10
- 239000002390 adhesive tape Substances 0.000 abstract description 7
- 230000007774 longterm Effects 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 description 17
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 5
- 238000012856 packing Methods 0.000 description 4
- 238000005215 recombination Methods 0.000 description 4
- 230000006798 recombination Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 239000003085 diluting agent Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229920003225 polyurethane elastomer Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- MEYZYGMYMLNUHJ-UHFFFAOYSA-N tunicamycin Natural products CC(C)CCCCCCCCCC=CC(=O)NC1C(O)C(O)C(CC(O)C2OC(C(O)C2O)N3C=CC(=O)NC3=O)OC1OC4OC(CO)C(O)C(O)C4NC(=O)C MEYZYGMYMLNUHJ-UHFFFAOYSA-N 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention discloses a high-sealing-performance envelope which comprises an upper envelope and a lower envelope which are made of flexible material. The envelope is characterized in that an outward turned folding side is formed at the upper edge of the lower envelope; the lower edge of the upper envelope is separated from and connected with the folding side of the lower envelope through a zipper; a rain-proof curtain for covering the zipper is arranged on the outer side of the lower edge of the upper envelope; a sealing tape is adhered to the outer side of the zipper which is zipped up; and the upper envelope, the lower envelope, a ground mat and the rain-proof curtain are all made of high-barrier camouflage composite material. The envelope adopts a unique adhesive tape zipper type sealing structure design and high-performance preparation material, so that the envelope has the excellent properties of reasonable structure, good gas tightness, puncture resistance, tear resistance, high barrier, maintenance-free property and the like, can effectively solve the problem that army supplies are easy to become damp during long-term sealing, storage and transportation in the wild, and helps to improve the sealing, storage and transportation quality of the supplies.
Description
Technical field
The present invention relates to a kind of outer wrapper of sealing article up for safekeeping, specifically be used for moistureproof high leakproofness big envelope during a kind of material storage and transportation.
Background technology
It is larger that military hardware and goods and materials are affected by temperature, humidity, illumination and the electromagnetism etc. of environment in storage and transport process, and especially in harsh environment, variation in various degree can occur the character of military supplies, have in addition can go bad or lose efficacy.For this reason, the staff generally can take certain safeguard procedures when military hardware and material storage or transportation, with safe storage and the transportation of guaranteeing goods and materials.
At present, the means of defence of military hardware and goods and materials is more, wherein orthodox method be on military hardware such as firearms coating butter with isolated goods and materials and contact with air, antirust with protection against the tide; Also useful vapor phase inhibitor technology prevents the apparatus corrosion of making moist in addition, though these means of defences can play certain protection effect at short notice, but can't ensure that military supplies avoid environmental attack in the long term storage process, and there are many defectives such as operation inconvenience in this means of defence when accumulating in enormous quantities; In addition, also there is part military hardware goods and materials apparatus to adopt plastic-aluminum vacuum envelope packing, this packing can make military supplies and external environment thoroughly isolated, can prevent effectively that also illumination is on the impact of goods and materials, but also there is in actual applications following defective: at first, the unreasonable structure of big envelope equipment, leak tightness is poor, cause goods and materials still can corrosion in long-term storage and transport process, damage, rotten etc.; Secondly, there are many drawbacks in the material of preparation big envelope, poor such as the anti-property exposed, tear resistance, especially in the open air in the low temperature environment, very easily damaged behind poor, the gentle folding of envelope material elasticity, it is rotten that this not only causes military hardware or goods and materials to lose envelope, and storing and transporting security is poor, and in the situation of electromagnetic interference, the part equipment lost efficacy easily and lost value of service.
CN102320422A discloses the whole airtight equipment of sealing up for safekeeping of a kind of equipment goods and materials, although this equipment has certain protection against the tide, the effect such as sun-proof, dustproof and anti-oxidation when storing apparatus and goods and materials, but, this equipment air-tightness is relatively poor, parts are more, structure is complicated, and operation is loaded down with trivial details when each use and dismounting.
Summary of the invention
Purpose of the present invention just provides a kind of high leakproofness big envelope, to solve the use dismounting complex operation that has the packing big envelope now and exist, the problem that leak tightness is poor and barrier is poor.
The present invention is achieved in that a kind of high leakproofness big envelope, comprises upper envelope and the lower big envelope made by flexible material, is shaped with the folded edge of turning up on the upper edge of described lower big envelope, and the lower edge of described upper envelope and the folded edge of described lower big envelope are by slide fastener deciliter; At the lower rain-proof curtain that has the covering slide fastener to use along arranged outside of described upper envelope, the slide fastener outside after drawing is pasted with sealant tape;
Described upper envelope, described lower big envelope and described rain-proof curtain are to be made the composite layer that described high-barrier camouflage material is comprised of camouflage layer, high-obstruction, hot sealing layer and antistatic backing by high-barrier camouflage composite material;
Described camouflage layer is nylon camouflage color layer of cloth; Described high-obstruction is that the one side at aluminium foil is bonded with the polyethylene terephthalate film, is bonded with polyamide membrane at the another side of aluminium foil; Described hot sealing layer is the TPUE film; Described antistatic backing is the antistatic additive coating that is sprayed on described hot sealing layer outside face.
The thickness of aluminium foil of the present invention is 6～8 μ m, and the thickness of described polyethylene terephthalate film is 11～13 μ m, and the thickness of described polyamide membrane is 14～16 μ m, and the thickness of described hot sealing layer is 120～150 μ m.
The present invention is provided with the humiture index gauge at described upper envelope.
Antistatic additive coating of the present invention is polyurethane electrostatic resistance agent coating.
The present invention adopts the adhesive tape zipper-type structure to being connected and sealed between the upper and lower big envelope, and the upper edge of described lower big envelope is shaped with the folded edge of turning up, and slide fastener deciliter sealing is passed through with the folded edge of described lower big envelope in the lower edge of described upper envelope; By at slide fastener outside adhesive seal adhesive tape, can further improve airtight quality simultaneously; Lower rain-proof curtain along arranged outside at described upper envelope can hide sealant tape and slide fastener, the entering of multiple blocking-up air and moisture.The present invention adopts upper and lower seal sleeve structure form, be convenient to pile and carrying that goods and materials are sealed operation up for safekeeping and sealed rear goods and materials up for safekeeping, the folded edge of turning up has been designed on upper edge at lower big envelope, not only can block the outer wet gas of big envelope and enter big envelope inside, and can when pasting, provide for slide fastener and adhesive tape the support layer of adequate thickness and intensity, make slide fastener and adhesive tape keep for a long time higher air-tightness in upper and lower big envelope junction, the condition of storage of long-term safety is provided for the goods and materials in the big envelope.
In addition, the parts such as upper envelope of the present invention, lower big envelope and rain-proof curtain all adopt high-barrier camouflage composite material to make, this composite material is to be composited by nylon colour camoufague cloth camouflage layer, special plastic-aluminum high-obstruction and TPUE hot sealing layer, and be coated with anti-static coating at the hot sealing layer inside face, make thus a kind ofly anti-ly expose, anti tear, high-barrier and the anti-camouflage composite material of rubbing folding of low temperature.This material can overcome the PVC Compound Fabric of using in the present packing and the ubiquitous low temperature flexibility of PE composite aluminium plastic material is poor, tensile strength is low, tear resistance is poor, wear no resistance and the defective such as easily expose, the big envelope for preparing is had anti-ly expose, many premium properties such as anti tear, electrostatic prevention, high-barrier, lightweight, non-maintaining, durable, thereby guaranteed the safety of goods and materials in long-term storage and transport process in the big envelope.
The present invention has adopted adhesive tape zip mode hermetically-sealed construction and performance-oriented envelope material, thereby make the big envelope that is prepared into have rational in infrastructure, air-tightness good, anti-ly expose, anti tear, electrostatic prevention, high-barrier, lightweight, seal and dismantle the good characteristics such as convenient, non-maintaining, durable up for safekeeping, can effectively solve goods and materials and seal for a long time the problem of making moist in the process up for safekeeping, help to improve goods and materials and seal the accumulating quality up for safekeeping.
Description of drawings
Fig. 1 is use state reference map of the present invention.
Fig. 2 is the structural representation of upper and lower big envelope joint portion.
Fig. 3 is the structural representation of high-barrier camouflage composite material.
Among the figure: 1, upper envelope, 2, lower big envelope, 3, rain-proof curtain, 4, humiture index gauge, 5, ground cushion, 6, the folded edge of turning up, 7, slide fastener, 8, sealant tape, 9, the camouflage layer, 10, high-obstruction, 11, hot sealing layer, 12, the polyethylene terephthalate film, 13, aluminium foil, 14, polyamide membrane, 15, antistatic backing.
The specific embodiment
Following embodiment is used for further describing the present invention, but does not limit in any form the present invention.
As shown in Figure 1, high leakproofness big envelope of the present invention comprises upper envelope 1 and lower big envelope 2 two parts, and the two all is flexible cube cover bodies of being made by high-barrier composite material, can connect a ground cushion 5 in the bottom of lower big envelope 2.The lower rain-proof curtain 3 that has covering upper envelope and lower big envelope to be tightly connected and to locate along arranged outside at upper envelope 1 also is provided with humiture index gauge 4 on upper envelope 1, so that the environmental aspect in the indication big envelope.
As shown in Figure 2, upper edge edge at lower big envelope 2 is provided with the folded edge 6 of turning up, and is provided with outside the slide fastener 7 that folding is used between the lower edge of the edge, the outside on turning folding limit 6 and upper envelope 1, after slide fastener 7 drawings, at the outside of slide fastener adhesive seal adhesive tape 8, seal again.At the lower rain-proof curtain 3 that adds a bar shaped along the outside of upper envelope 1, to block the joint portion of upper and lower big envelope.Edge inboard and lower big envelope also can arrange velcro in the lower end of rain-proof curtain 3, bonds together with lower end and lower big envelope 2 with rain-proof curtain 3.
As shown in Figure 3, described high-barrier camouflage composite material is to be composited by camouflage layer 9, high-obstruction 10, hot sealing layer 11 and 15 4 kinds of different material layers of antistatic backing.
Wherein, camouflage layer 9 is nylon camouflage color layer of cloth; High-obstruction 10 is at the bonding polyethylene terephthalate film 12 that is compounded with of the one side of aluminium foil 13, in the bonding polyamide membrane 14 that is compounded with of the another side of aluminium foil 13; Hot sealing layer 11 is the TPUE film; Antistatic backing 15 is the antistatic additive coatings that are sprayed on hot sealing layer 11 outside faces.Antistatic additive can be selected the polyurethane electrostatic resistance agent, to form polyurethane electrostatic resistance agent coating.
The thickness of aluminium foil 13 is 6～8 μ m, and the thickness of polyethylene terephthalate film 12 is 11～13 μ m, and the thickness of polyamide membrane 14 is 14～16 μ m, and the thickness of hot sealing layer 11 is 120～150 μ m.
By adhesives, again through compound, slaking, form the high-barrier camouflage composite material of tunic shape between each layer.
High-barrier camouflage composite manufacture technique is:
One, the preparation of high-obstruction 10: be polyurethane binder of 25% (with ethyl acetate as diluent) with polyethylene terephthalate film surface coating solid content, the wet amount of adhesives coating is 9 g/m
2, after 80 ℃ of lower oven dry, carry out bonding with aluminium foil; Through the heating roller for compound machine pressurization, composite air pressure is 0.2 MPa, and recombination velocity is 75 m/min; After the compound rolling, slaking is 24 hours between 50 ℃ slaking; After the slaking, use the bonding polyamide membrane of polyurethane binder at the another side of aluminium foil, it is compound to adopt above-mentioned complex machining process to carry out again, and carries out slaking in 48 hours between 50 ℃ slaking, makes high-obstruction 10.
Two, high-obstruction 10 and camouflage layer 9 is compound: with the one side of the polyethylene terephthalate film of the high-obstruction 10 that makes with to be by solid content that 38% oiliness monocomponent polyurethane adhesives (with ethyl acetate as diluent) carries out as the nylon colour camoufague cloth of camouflage layer 9 bonding, wet 15 g/m that measure of the coating of adhesives
2It is compound to adopt heating roller for compound machine to carry out, 120 ℃ of its combined temps, and heating roller for compound machine air pressure 0. 2 MPa, recombination velocity is 55 m/min; Under 25 ℃ of normal temperature, natural slaking 24 hours.
Three, high-obstruction 10 and hot sealing layer 11 is compound: with the one side of the polyamide membrane of the high-obstruction 10 in the composite material that step 2 is made, by solid content be 45% oiliness monocomponent polyurethane adhesives (ethyl acetate is diluent) with polyurethane elastomer film as hot sealing layer 11 carry out bonding, the wet amount of adhesives coating 20 g/m
2, carrying out Compound Machining, combined temp is 50 ℃, recombination velocity is 15 m/min, pressure 300 N/m
2, heating roller for compound machine air pressure is adjusted into 0.2 MPa; Compound tense keeps composite material smooth, wrinkle resistant being advisable; Pass through 20 ℃ of lower nature slakings of normal temperature 48 hours after compound again, after the slaking, go up heating roller for compound machine again, be heated to 120 ℃, pressure is 300 N/m
2, air pressure is adjusted into 0.2 MPa, and recombination velocity is 15 m/min, and it is compound to finish secondary, to guarantee combined strength bination.
Four, antistatic backing 15 is compound: be 1.5% polyurethane electrostatic resistance agent at the outside face spraying solid content of the polyurethane elastomer film of the composite material of making through step 3, the wet amount of the coating of polyurethane electrostatic resistance agent is 5 g/m
2After the drying, namely make high-barrier camouflage composite material.
Using method of the present invention is: when the encapsulation goods and materials, at first goods and materials or equipment are placed lower big envelope 2, make the folded edge 6 of turning up on edge on the lower big envelope 2 in order, upper envelope 1 on the buckle closure is pulled on the slide fastener 7 between upper envelope 1 and lower big envelope 2 joint portions again, pastes a circle sealant tape 8 in the outside of slide fastener 7, the slide fastener seam is shut, again the rain-proof curtain 3 on upper envelope 1 edge is put down, and fit with lower big envelope 2 as far as possible, namely finish and seal operation up for safekeeping.
During big envelope, dig rain-proof curtain 3 in dismounting, tear sealant tape 8, unzip 7, take or raise upper envelope 1, goods and materials or the equipment of sealing up for safekeeping can be taken out, upper and lower big envelope is deposited got final product.
Claims (4)
1. a high leakproofness big envelope comprises upper envelope and the lower big envelope made by flexible material, it is characterized in that, is shaped with the folded edge of turning up on the upper edge of described lower big envelope, and the lower edge of described upper envelope and the folded edge of described lower big envelope are by slide fastener deciliter; At the lower rain-proof curtain that has the covering slide fastener to use along arranged outside of described upper envelope, the slide fastener outside after drawing is pasted with sealant tape;
Described upper envelope, described lower big envelope and described rain-proof curtain are to be made the composite layer that described high-barrier camouflage material is comprised of camouflage layer, high-obstruction, hot sealing layer and antistatic backing by high-barrier camouflage composite material;
Described camouflage layer is nylon camouflage color layer of cloth; Described high-obstruction is that the one side at aluminium foil is bonded with the polyethylene terephthalate film, is bonded with polyamide membrane at the another side of aluminium foil; Described hot sealing layer is the TPUE film; Described antistatic backing is the antistatic additive coating that is sprayed on described hot sealing layer outside face.
2. high leakproofness big envelope according to claim 1, it is characterized in that the thickness of described aluminium foil is 6～8 μ m, the thickness of described polyethylene terephthalate film is 11～13 μ m, the thickness of described polyamide membrane is 14～16 μ m, and the thickness of described hot sealing layer is 120～150 μ m.
3. high leakproofness big envelope according to claim 1 is characterized in that, is provided with the humiture index gauge at described upper envelope.
4. high leakproofness big envelope according to claim 1 is characterized in that, described antistatic additive coating is polyurethane electrostatic resistance agent coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210577955.4A CN102975973B (en) | 2012-12-27 | 2012-12-27 | High-sealing-performance envelope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210577955.4A CN102975973B (en) | 2012-12-27 | 2012-12-27 | High-sealing-performance envelope |
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| Publication Number | Publication Date |
|---|---|
| CN102975973A true CN102975973A (en) | 2013-03-20 |
| CN102975973B CN102975973B (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210577955.4A Active CN102975973B (en) | 2012-12-27 | 2012-12-27 | High-sealing-performance envelope |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862773A (en) * | 2014-03-07 | 2014-06-18 | 宜兴市王者塑封有限公司 | Efficient anti-static composite film with heat sealability |
| CN104590786A (en) * | 2015-01-22 | 2015-05-06 | 中国人民解放军总装备部军械技术研究所 | Combined type moisture-proof sealing sleeve |
| CN105197398A (en) * | 2015-09-30 | 2015-12-30 | 中国人民解放军63908部队 | Manufacturing technology for high-barrier composite material seal sleeve |
| CN107902584A (en) * | 2017-12-14 | 2018-04-13 | 中山市合信包装有限公司 | A kind of rope locking machine |
| CN109808270A (en) * | 2019-03-28 | 2019-05-28 | 厦门长塑实业有限公司 | A kind of anti-flammability antistatic nylon film and preparation method thereof |
| CN110439442A (en) * | 2019-09-11 | 2019-11-12 | 天津森罗科技股份有限公司 | A kind of gas-tight door and flexible airtight tent for airtight tent |
| CN110962355A (en) * | 2019-12-27 | 2020-04-07 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Bonding forming method for improving air tightness of shrapnel gas bag |
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| CN201951220U (en) * | 2011-01-18 | 2011-08-31 | 黄西林 | Integral sealing storing sleeve for automobile |
| CN202448411U (en) * | 2012-02-16 | 2012-09-26 | 昆山蓝胜建材有限公司 | Novel high-separation vacuum film |
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| JP2003145666A (en) * | 2001-11-08 | 2003-05-20 | Dainippon Printing Co Ltd | Individual rice cake packaging material and individual rice cake package using the packaging material |
| CN201951220U (en) * | 2011-01-18 | 2011-08-31 | 黄西林 | Integral sealing storing sleeve for automobile |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862773A (en) * | 2014-03-07 | 2014-06-18 | 宜兴市王者塑封有限公司 | Efficient anti-static composite film with heat sealability |
| CN103862773B (en) * | 2014-03-07 | 2016-04-27 | 宜兴市王者塑封有限公司 | The antistatic laminated film of a kind of High Efficiency Thermal sealing property |
| CN104590786A (en) * | 2015-01-22 | 2015-05-06 | 中国人民解放军总装备部军械技术研究所 | Combined type moisture-proof sealing sleeve |
| CN104590786B (en) * | 2015-01-22 | 2017-02-01 | 中国人民解放军总装备部军械技术研究所 | Combined type moisture-proof sealing sleeve |
| CN105197398A (en) * | 2015-09-30 | 2015-12-30 | 中国人民解放军63908部队 | Manufacturing technology for high-barrier composite material seal sleeve |
| CN107902584A (en) * | 2017-12-14 | 2018-04-13 | 中山市合信包装有限公司 | A kind of rope locking machine |
| CN109808270A (en) * | 2019-03-28 | 2019-05-28 | 厦门长塑实业有限公司 | A kind of anti-flammability antistatic nylon film and preparation method thereof |
| CN109808270B (en) * | 2019-03-28 | 2020-10-23 | 湖南工业大学 | Flame-retardant antistatic nylon film and preparation method thereof |
| CN110439442A (en) * | 2019-09-11 | 2019-11-12 | 天津森罗科技股份有限公司 | A kind of gas-tight door and flexible airtight tent for airtight tent |
| CN110962355A (en) * | 2019-12-27 | 2020-04-07 | 中国化工集团曙光橡胶工业研究设计院有限公司 | Bonding forming method for improving air tightness of shrapnel gas bag |
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| Publication number | Publication date |
|---|---|
| CN102975973B (en) | 2014-07-02 |
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