CN104228290A - Weftless fabric, preparation method of weftless fabric, and weftless fabric product - Google Patents
Weftless fabric, preparation method of weftless fabric, and weftless fabric product Download PDFInfo
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- CN104228290A CN104228290A CN201310248423.0A CN201310248423A CN104228290A CN 104228290 A CN104228290 A CN 104228290A CN 201310248423 A CN201310248423 A CN 201310248423A CN 104228290 A CN104228290 A CN 104228290A
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- weight polyethylene
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Abstract
The invention provides a weftless fabric, a preparation method of the weftless fabric and a weftless fabric product. The method comprises the following steps: compositely laminating a plurality of ultrahigh-molecular-weight polyethylene films with a given angle into a whole body in an intersecting manner to obtain the weftless fabric. Since macromolecular straight-chain structures inside the ultrahigh-molecular-weight polyethylene films are uniformly distributed, the damage probability of the inside of each film is relatively low in the preparation process of the weftless fabric, the defects such as yarn breaking, twisting, intertwining, knotting, non-uniformity in arrangement and the like can be avoided, when the weftless fabric prepared on the basis of the ultrahigh-molecular-weight polyethylene film suffers the impact of external force, the ultrahigh-molecular-weight polyethylene film is stressed as an integrity, a stress point can be rapidly diffused to a stress surface so as to effectively transfer energy, so that the strength of the weftless fabric can be improved, and the protection performance of the weftless fabric, such as the bulletproof performance, can be improved.
Description
Technical field
The present invention relates to the preparation technology of chemical fabric, particularly relate to a kind of without latitude cloth and preparation method thereof with without latitude cloth products.
Background technology
Ultra-high molecular weight polyethylene (Ultra High Molecular Weight Polyethylene, be called for short UHMW-PE) be a kind of thermoplastic engineering plastic with Good All-around Property of linear structure, based on this material, make high-intensity fiber is one of its most important purposes.
Super high molecular weight weight northylen (UHMW-PE) fiber is a kind of synthetic fibers class, its molecular structure has very high extended parallelization and the degree of orientation, this molecular structure determines superhigh molecular weight polyethylene fibers and has high strength and modulus, and has the advantages such as good chemical stability, corrosion resistance.The above-mentioned characteristic of super high molecular weight weight northylen (UHMW-PE) fiber, has surmounted aramid fiber plain cloth, is widely used in military affairs, police shellproof protection field, becomes this field and substitutes mainstay material in conventional steel structure bullet resistant material.
The intensity of unidirectional cloth (Uni-Directional Cloth, also referred to as UD cloth) concentrates on a direction.Polylith unidirectional cloth is stacked by certain fiber axis anglec of rotation, can obtain without latitude cloth.At present, superhigh molecular weight polyethylene fibers generally adopt following technique to prepare without latitude cloth: by many superhigh molecular weight polyethylene fibers through the warping technology such as even, parallel, straight and upright along a direction marshalling, stick with glue and connect each fiber and obtain unidirectional cloth, by multilayer unidirectional cloth by 0 degree or 90 degree successively intersection lay at least two layers, stick with glue and connect each layer unidirectional cloth and obtain without latitude cloth.
Above-mentioned existing technique glue consumption is large, and the complex process that glue and superhigh molecular weight polyethylene fibers will be bonded, reduce the production efficiency of unidirectional cloth.In addition, superhigh molecular weight polyethylene fibers is filament, every root superhigh molecular weight polyethylene fibers is independent individual, therefore the warping technology of each fiber is complicated, production cost is high, and the defect such as easily cause fracture of wire, distortion, tangled up and knotted, arrangement uneven in the technical process such as warping, gluing, obstruction is all carried out effective energy transferring without latitude cloth to external force by these defects, and then reduces without the intensity of latitude cloth, the performance such as shellproof.
Summary of the invention
Provide hereinafter about brief overview of the present invention, to provide about the basic comprehension in some of the present invention.Should be appreciated that this general introduction is not summarize about exhaustive of the present invention.It is not that intention determines key of the present invention or pith, and nor is it intended to limit the scope of the present invention.Its object is only provide some concept in simplified form, in this, as the preorder in greater detail discussed after a while.
The invention provides a kind of cost low, can improve cloth intensity without latitude cloth and preparation method thereof with without latitude cloth products.
First aspect, the invention provides a kind of without latitude cloth preparation method, comprising:
Multi-disc ultra-high molecular weight polyethylene film is intersected at an angle laminated being integrated, obtain described without latitude cloth.
Alternatively, describedly polylith ultra-high molecular weight polyethylene film is intersected at an angle laminated being integrated, comprise: sprawl cross layered at an angle for ultra-high molecular weight polyethylene film described in polylith, and hot pressing or glued joint the overlapping portion of ultra-high molecular weight polyethylene film described in polylith.
Alternatively, the intersecting angle of the two-layer ultra-high molecular weight polyethylene film of arbitrary neighborhood is identical.
Alternatively, described intersecting angle is 0-90 degree.
Alternatively, described intersecting angle is 45 degree or 90 degree.
Alternatively, in each layer ultra-high molecular weight polyethylene film, the intersecting angle of at least two-layer ultra-high molecular weight polyethylene film is different from the intersecting angle of other layer of ultra-high molecular weight polyethylene film.
Alternatively, from first floor ultra-high molecular weight polyethylene film in last layer ultra-high molecular weight polyethylene film, the intersecting angle of each adjacent two layers ultra-high molecular weight polyethylene film increases gradually.
Alternatively, the relevant parameter of described ultra-high molecular weight polyethylene film at least meet following one or more:
Line density is more than 5000 dawn;
More than width 100mm;
Below thickness 0.2mm;
Fracture strength is more than 10 grams/dawn;
Stretch modulus is more than 800 grams/dawn;
Elongation at break is below 6%.
Second aspect, the present invention also provides a kind of without latitude cloth, adopts above-mentioned method to obtain.
The third aspect, the present invention also provides a kind of without latitude cloth products, adopts above-mentioned obtained without latitude cloth.
In the embodiment of the present invention, ultra-high molecular weight polyethylene film is a kind of thin slice being become by ultrahigh molecular weight polyethylene, have one fixed width and thickness, and width is far longer than thickness is a kind of overall structure not having binding site or cutting line.
The embodiment of the present invention based on ultra-high molecular weight polyethylene film preparation without latitude cloth, the loaded down with trivial details technique of each fiber being carried out respectively to warping process can be saved, also obviously reduce glue consumption, thereby simplify the preparation technology without latitude cloth, reduce production cost, improve production efficiency.
In addition, because the inner large molecule linear chain structure of ultra-high molecular weight polyethylene film is evenly distributed, lower without the inner impaired probability of film in latitude cloth preparation process, the defects such as inner fracture of wire, distortion, tangled up and knotted, arrangement be uneven can not be produced, and based on ultra-high molecular weight polyethylene film obtained without latitude cloth when being subject to external impacts, ultra-high molecular weight polyethylene film is integrally stressed, rapidly stress point can be diffused as stress surface with effective transferring energy, so improve without latitude cloth intensity, improve its barrier propterty such as shellproof.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart without a kind of embodiment of latitude cloth preparation method provided by the invention.
Fig. 2 is the structural representation without the first embodiment of latitude cloth provided by the invention.
Fig. 3 is the structural representation without latitude cloth the second embodiment provided by the invention.
Fig. 4 is the structural representation without latitude cloth the 4th kind of embodiment provided by the invention.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.The element described in an accompanying drawing of the present invention or a kind of embodiment and feature can combine with the element shown in one or more other accompanying drawing or embodiment and feature.It should be noted that for purposes of clarity, accompanying drawing and eliminate expression and the description of unrelated to the invention, parts known to persons of ordinary skill in the art and process in illustrating.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not paying creative work, all belongs to the scope of protection of the invention.
The technical scheme that various embodiments of the present invention provide, the conventional art applied with ultra-high molecular weight polyethylene is essentially different, it is the revolutionary character innovation that conventional art is proposed, substitute ultra-high molecular weight fibers by ultra-high molecular weight polyethylene film and carry out exploitation without latitude cloth and preparation, its core concept mainly comprises: by ultra-high molecular weight polyethylene film, substitute traditional superhigh molecular weight polyethylene fibers, prepare without latitude cloth.
Wherein, ultra-high molecular weight polyethylene film is a kind of thin slice being become by ultrahigh molecular weight polyethylene, have one fixed width and thickness, and width is far longer than thickness.
Ultra-high molecular weight polyethylene film provided by the invention, different from superhigh molecular weight polyethylene fibers, from gluedd joint the plane formed by many superhigh molecular weight polyethylene fibers also different, their remarkable difference is: ultra-high molecular weight polyethylene film provided by the invention itself has certain width and thickness, is a kind of overall structure not having binding site or cutting line.
What various embodiments of the present invention provided is based on ultra-high molecular weight polyethylene film preparation without latitude cloth.In preparation process, eliminate the complicated technology arranged respectively plurality of fibers silk, the surface significantly reducing film or band produces the probability of burr, also obviously reduces the probability that the phenomenons such as fracture of wire, distortion, winding appear in film inside.During carrying load, ultra-high molecular weight polyethylene film is overall stressed, makes this intensity without latitude cloth higher, effectively improves rate of utilization of strength.Therefore, based on the intensity without latitude cloth of ultra-high molecular weight polyethylene film preparation, higher than the product adopting the superhigh molecular weight polyethylene fibers of same Denier to prepare, and the former cost is starkly lower than the latter, there is the advantages such as structural integrity is good, intensity is high, rate of utilization of strength is high, production efficiency is high, processing cost is low, lightweight, surface density is little, flexible.
Below in conjunction with accompanying drawing and for alternate configurations of rigging and preparation method thereof, further illustrate technical scheme of the present invention.
Embodiment one
The present embodiment provides a kind of without latitude cloth preparation method, comprising:
Step S101, becomes to intersect at an angle compound successively by polylith ultra-high molecular weight polyethylene film;
Step S102, obtains described without latitude cloth by the polylith ultra-high molecular weight polyethylene thin layer consolidation of intersection compound.
The core concept of the present embodiment is: prepare without latitude cloth with the unidirectional cloth that ultra-high molecular weight polyethylene film directly replaces conventional ultra high molecular weight polyethylene fiber to prepare.
Ultra-high molecular weight polyethylene film in the present invention described in each embodiment is the polyethylene of molecular weight more than 1,000,000.
In the present embodiment, ultra-high molecular weight polyethylene film is a kind of thin slice being become by ultrahigh molecular weight polyethylene, have one fixed width and thickness, and width is far longer than thickness is a kind of overall structure not having binding site or cutting line.
The ultra-high molecular weight polyethylene film that the present embodiment provides, replace the superhigh molecular weight polyethylene fibers unidirectional cloth of traditional handicraft, the loaded down with trivial details technique of each fiber being carried out respectively to warping process can be saved, also obviously glue consumption is reduced, thereby simplify the preparation technology without latitude cloth, reduce production cost, improve production efficiency.
Sprawl cross layered at an angle successively for polylith ultra-high molecular weight polyethylene film, and hot pressing or glued joint the overlapping portion of ultra-high molecular weight polyethylene film described in polylith.
Adopt the mode of glueing joint, be then coated with adhesive, another side without adhesive in the one side of ultra-high molecular weight polyethylene film, the one side of a ultra-high molecular weight polyethylene film with adhesive is gluedd joint with the one side of another ultra-high molecular weight polyethylene film without adhesive.
Adopt the mode of hot pressing, then the controlled condition of hot pressing is temperature 50-130 DEG C, and/or, pressure 1-15MPa; Adopting the mode of hot pressing then without the need to being coated with adhesive, being conducive to Simplified flowsheet, reducing costs, enhancing productivity, and because hot pressing temperature is lower than the fusing point of ultra-high molecular weight polyethylene film or band, therefore damage can not be caused to it.
Alternatively, the intersecting angle of the two-layer ultra-high molecular weight polyethylene film of arbitrary neighborhood is identical, and described intersecting angle is 0-90 degree.
Further, intersecting angle is 45 degree or 90 degree.
Alternatively, at least two-layer in each layer ultra-high molecular weight polyethylene film intersecting angle is different from the intersecting angle of other layer of ultra-high molecular weight polyethylene film.
Further, in first floor ultra-high molecular weight polyethylene film to last layer ultra-high molecular weight polyethylene film, the intersecting angle of each adjacent two layers ultra-high molecular weight polyethylene film increases gradually, and what adopt which to prepare can apply without latitude cloth but be not limited to the making of bulletproof halmet.
Above-mentioned formation can be two-layer compound without latitude cloth, also can be four layers of compound, also can be eight layers of compound.
In the present invention the relevant parameter of the ultra-high molecular weight polyethylene film that each embodiment provides at least meet following one or more:
Line density is more than 5000 dawn;
More than width 100mm;
Below thickness 0.2mm;
Fracture strength is more than 10 grams/dawn;
Stretch modulus is more than 800 grams/dawn;
Elongation at break is below 6%.
The present embodiment provide without latitude cloth preparation method, adopt ultra-high molecular weight polyethylene film preparation without latitude cloth, the loaded down with trivial details technique of each fiber being carried out respectively to warping process can be saved, also obviously glue consumption is reduced, thereby simplify the preparation technology without latitude cloth, technique is simple, production cost is low, obtained can be widely used in national defense and military without latitude cloth, in individual protection and civil area, floor as shellproof in helicopter, the passenger cabin door of armoring seat and reinforcing, the armor facing plate on tank and naval vessel, anti-fragment lining, creeper truck, the anti-ballistic armor of synthesis of tactical vehicle and business panzer, ballproof cash truck, the housing of armoring weapons, the guard shield cover of radar and flak jackets, bulletproof flashboards, the helmet, bulletproof stab-resistant clothes, shellproof anti-riot case and bag and other high-strength composite materials, as high-strength case and bag, vapour anti-collision rod for vehicles etc.
Embodiment two
The present embodiment provides a kind of without latitude cloth, and intersect laminated forming at an angle by multi-disc ultra-high molecular weight polyethylene film, the intersecting angle of the two-layer ultra-high molecular weight polyethylene film of arbitrary neighborhood is identical.
Further, intersecting angle is 0-90 degree.
Further, intersecting angle is 45 degree or 90 degree.
As the optional embodiment of one, as shown in Figure 2, the laminated formation of multi-disc ultra-high molecular weight polyethylene film 101 is without latitude cloth, and the intersecting angle of adjacent two layers ultra-high molecular weight polyethylene film 101 is 90 degree.
As the optional embodiment of one, as shown in Figure 3, the laminated formation of multi-disc ultra-high molecular weight polyethylene film 201 is without latitude cloth, and the intersecting angle of adjacent two layers ultra-high molecular weight polyethylene film 201 is 45 degree.
The lap of adjacent two layers ultra-high molecular weight polyethylene film adopts the mode of splicing or hot pressing to connect, adopt the mode of glueing joint, then at a gluing of ultra-high molecular weight polyethylene film, another side is glue-free, is had by ultra-high molecular weight polyethylene film the glue-free one side of the one side of glue and another ultra-high molecular weight polyethylene to glued joint; Adopt the mode of hot pressing, then the controlled condition of hot pressing is temperature 50-130 DEG C, and/or, pressure 1-15MPa.
Because the inner large molecule linear chain structure of ultra-high molecular weight polyethylene film is evenly distributed, lower without the inner impaired probability of film in latitude cloth preparation process, the defects such as inner fracture of wire, distortion, tangled up and knotted, arrangement be uneven can not be produced, and based on ultra-high molecular weight polyethylene film obtained without latitude cloth when being subject to external impacts, ultra-high molecular weight polyethylene film is integrally stressed, rapidly stress point can be diffused as stress surface with effective transferring energy, so improve without latitude cloth intensity, improve its barrier propterty such as shellproof.
The present embodiment provide without latitude cloth, adopt ultra-high molecular weight polyethylene Film laminated to form, the loaded down with trivial details technique of each fiber being carried out respectively to warping process can be saved, also obviously glue consumption is reduced, thereby simplify the preparation technology without latitude cloth, technique is simple, and production cost is low, when by external impacts, ultra-high molecular weight polyethylene film is integrally stressed, rapidly stress point can be diffused as stress surface with effective transferring energy, there is intensity high, modulus is large, creep properties is little, along film edge direction, there is less stress and concentrate the advantages such as coverage, national defense and military can be widely used in, in individual protection and civil area, floor as shellproof in helicopter, the passenger cabin door of armoring seat and reinforcing, the armor facing plate on tank and naval vessel, anti-fragment lining, creeper truck, the anti-ballistic armor of synthesis of tactical vehicle and business panzer, ballproof cash truck, the housing of armoring weapons, the guard shield cover of radar and flak jackets, bulletproof flashboards, the helmet, bulletproof stab-resistant clothes, shellproof anti-riot case and bag and other high-strength composite materials, as high-strength case and bag, vapour anti-collision rod for vehicles etc.
Embodiment three
What the present embodiment provided comprises without latitude cloth: intersect laminated forming at an angle by multi-disc ultra-high molecular weight polyethylene film.In each layer ultra-high molecular weight polyethylene film, the intersecting angle of at least two-layer ultra-high molecular weight polyethylene film is different from the intersecting angle of other layers.
As shown in Figure 4, the laminated formation of polylith ultra-high molecular weight polyethylene film 301 is without latitude cloth, in each layer ultra-high molecular weight polyethylene film, in first floor ultra-high molecular weight polyethylene film to last layer ultra-high molecular weight polyethylene film, the intersecting angle of each adjacent two layers ultra-high molecular weight polyethylene film increases gradually, adopts the making being mainly used in the helmet without latitude cloth prepared by which.
The helmet obtained without latitude cloth provided by the present embodiment, intensity is high, and ballistic performance is superior.
The lap of adjacent two layers ultra-high molecular weight polyethylene film adopts the mode of splicing or hot pressing to connect, adopt the mode of glueing joint, then at a gluing of ultra-high molecular weight polyethylene film, another side is glue-free, is had by ultra-high molecular weight polyethylene film the glue-free one side of the one side of glue and another ultra-high molecular weight polyethylene to glued joint; Adopt the mode of hot pressing, then the controlled condition of hot pressing is temperature 50-130 DEG C, and/or, pressure 1-15MPa.
Embodiment four
The present embodiment provides a kind of without latitude cloth products, and with obtained without latitude cloth, this intersects laminated forming without latitude cloth at an angle by polylith ultra-high molecular weight polyethylene film.
The passenger cabin door including but not limited to the shellproof floor of helicopter, armoring seat and reinforcing without latitude cloth products that the present embodiment provides, the armor facing plate on tank and naval vessel, anti-fragment lining, the anti-ballistic armor of synthesis of creeper truck, tactical vehicle and business panzer, the housing of ballproof cash truck, armoring weapons, the guard shield cover of radar and flak jackets, bulletproof flashboards, the helmet, bulletproof stab-resistant clothes, shellproof anti-riot case and bag and other high-strength composite materials, as high-strength luggage case and bag, vapour anti-collision rod for vehicles etc.
The present embodiment provide without latitude cloth products, owing to adopting ultra-high molecular weight polyethylene film preparation without latitude cloth, when by external impacts, ultra-high molecular weight polyethylene film is integrally stressed, rapidly stress point can be diffused as stress surface with effective transferring energy, therefore by this without latitude cloth prepare higher without latitude cloth products intensity, ballistic performance is better.
State in each embodiment on the invention, the sequence number of embodiment and/or sequencing are only convenient to describe, and do not represent the quality of embodiment.The description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In the embodiments such as apparatus and method of the present invention, obviously, each parts or each step reconfigure after can decomposing, combine and/or decomposing.These decompose and/or reconfigure and should be considered as equivalents of the present invention.Simultaneously, above in the description of the specific embodiment of the invention, the feature described for a kind of embodiment and/or illustrate can use in one or more other embodiment in same or similar mode, combined with the feature in other embodiment, or substitute the feature in other embodiment.
Should emphasize, term " comprises/comprises " existence referring to feature, key element, step or assembly when using herein, but does not get rid of the existence or additional of one or more further feature, key element, step or assembly.
Although last it is noted that described the present invention and advantage thereof in detail above, be to be understood that and can carry out various change when not exceeding the spirit and scope of the present invention limited by appended claim, substituting and converting.And scope of the present invention is not limited only to the specific embodiment of process, equipment, means, method and step described by description.One of ordinary skilled in the art will readily appreciate that from disclosure of the present invention, can use perform the function substantially identical with corresponding embodiment described herein or obtain and its substantially identical result, existing and that will be developed in the future process, equipment, means, method or step according to the present invention.Therefore, appended claim is intended to comprise such process, equipment, means, method or step in their scope.
Claims (10)
1. without a preparation method for latitude cloth, it is characterized in that, comprising: multi-disc ultra-high molecular weight polyethylene film is intersected at an angle laminated being integrated, obtain described without latitude cloth.
2. the preparation method without latitude cloth according to claim 1, is characterized in that, describedly polylith ultra-high molecular weight polyethylene film is intersected at an angle laminated being integrated, and comprising:
Sprawl cross layered at an angle for ultra-high molecular weight polyethylene film described in polylith, and hot pressing or glued joint the overlapping portion of ultra-high molecular weight polyethylene film described in polylith.
3. the preparation method without latitude cloth according to claim 1, is characterized in that, the intersecting angle of the two-layer ultra-high molecular weight polyethylene film of arbitrary neighborhood is identical.
4. the preparation method without latitude cloth according to claim 3, is characterized in that, described intersecting angle is 0-90 degree.
5. the preparation method without latitude cloth according to claim 4, is characterized in that, described intersecting angle is 45 degree or 90 degree.
6. the preparation method without latitude cloth according to claim 1, is characterized in that, in each layer ultra-high molecular weight polyethylene film, the intersecting angle of at least two-layer ultra-high molecular weight polyethylene film is different from the intersecting angle of other layer of ultra-high molecular weight polyethylene film.
7. the preparation method without latitude cloth according to claim 6, is characterized in that, from first floor ultra-high molecular weight polyethylene film in last layer ultra-high molecular weight polyethylene film, the intersecting angle of each adjacent two layers ultra-high molecular weight polyethylene film increases gradually.
8., according to the arbitrary described preparation method without latitude cloth of claim 1-7, it is characterized in that, the relevant parameter of described ultra-high molecular weight polyethylene film at least meet below one or more:
Line density is more than 5000 dawn;
More than width 100mm;
Below thickness 0.2mm;
Fracture strength is more than 10 grams/dawn;
Stretch modulus is more than 800 grams/dawn;
Elongation at break is below 6%.
9. without a latitude cloth, it is characterized in that, adopt arbitrary described the obtaining without latitude cloth preparation method of claim 1-8.
10. without a latitude cloth products, it is characterized in that, adopt and obtain without latitude cloth as claimed in claim 9.
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| CN201310248423.0A CN104228290A (en) | 2013-06-20 | 2013-06-20 | Weftless fabric, preparation method of weftless fabric, and weftless fabric product |
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| CN201310248423.0A CN104228290A (en) | 2013-06-20 | 2013-06-20 | Weftless fabric, preparation method of weftless fabric, and weftless fabric product |
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| CN201310248423.0A Pending CN104228290A (en) | 2013-06-20 | 2013-06-20 | Weftless fabric, preparation method of weftless fabric, and weftless fabric product |
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| CN105620008A (en) * | 2015-09-08 | 2016-06-01 | 郑州中远防务材料有限公司 | Unidirectional laminate and preparation method thereof as well as system, non-woven fabric and protective product |
| CN106965516A (en) * | 2017-03-27 | 2017-07-21 | 上海斯瑞科技有限公司 | A kind of shellproof Compound Fabric and preparation method thereof |
| CN113715562A (en) * | 2021-09-07 | 2021-11-30 | 郑州中远防务材料有限公司 | Special vehicle otter board of getting rid of poverty |
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| CN101881582A (en) * | 2009-12-09 | 2010-11-10 | 湖南中泰特种装备有限责任公司 | Stabproof bulletproof material and preparation method |
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| US20090065084A1 (en) * | 2007-09-12 | 2009-03-12 | Abed Masarwa | Cross-laminated pipe and method of manufacturing same |
| CN101881582A (en) * | 2009-12-09 | 2010-11-10 | 湖南中泰特种装备有限责任公司 | Stabproof bulletproof material and preparation method |
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| CN106965516A (en) * | 2017-03-27 | 2017-07-21 | 上海斯瑞科技有限公司 | A kind of shellproof Compound Fabric and preparation method thereof |
| CN113715562A (en) * | 2021-09-07 | 2021-11-30 | 郑州中远防务材料有限公司 | Special vehicle otter board of getting rid of poverty |
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Application publication date: 20141224 |