CN108790303A - A kind of shellproof blackboard and preparation method thereof - Google Patents
A kind of shellproof blackboard and preparation method thereof Download PDFInfo
- Publication number
- CN108790303A CN108790303A CN201810646636.1A CN201810646636A CN108790303A CN 108790303 A CN108790303 A CN 108790303A CN 201810646636 A CN201810646636 A CN 201810646636A CN 108790303 A CN108790303 A CN 108790303A
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- Prior art keywords
- layer
- shellproof
- unit fibers
- blackboard
- stacked
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1207—Heat-activated adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The present invention provides a kind of shellproof blackboard and preparation method thereof, wherein shellproof blackboard includes：Writing layer, backsheet layer, holder, several unit fibers layers and the articulamentum between unit fibers layer；Several unit fibers layers are stacked from top to bottom, adjacent unit fibers layer is mutually bonded by articulamentum, each unit fibrous layer passes through laminar manner compression moulding, any cell fibrous layer has several filaments unidirectionally arranged being mutually parallel, in two adjacent unit fibers layers, the filament of the filament and another unit fibers layer of one of unit fibers layer is arranged in a crossed manner, writing layer is compound in the one side for the unit fibers layer being stacked, backsheet layer is compound on the another side for the unit fibers layer being stacked, writing layer, backsheet layer, the overall structure that the unit fibers layer being stacked is formed is fixed on holder.The present invention has both bulletproof function, can be used as blindage when shooting incident occurs, and then ensures the life security of teachers and students.
Description
Technical field
The present invention relates to shellproof technical field technical fields more particularly to a kind of shellproof blackboard and preparation method thereof.
Background technology
Blackboard is a kind of article imparted knowledge to students, be commonly used in meeting.Currently, existing blackboard usually only have write with
The functions such as displaying.However, in external campus, with taking place frequently for school shooting case, it is necessary to provide a kind of with shellproof work(
The blackboard of energy, to be used as blindage when shooting incident occurs.
Invention content
The purpose of the present invention is to provide a kind of shellproof blackboard and preparation method thereof, with overcome it is existing in the prior art not
Foot.
For achieving the above object, the present invention provides a kind of shellproof blackboard comprising：Writing layer, backsheet layer, holder,
Several unit fibers layers and the articulamentum between unit fibers layer；
Several unit fibers layers are stacked from top to bottom, and adjacent unit fibers layer is mutually bonded by articulamentum,
Each unit fibrous layer has several fibres unidirectionally arranged being mutually parallel by laminar manner compression moulding, any cell fibrous layer
Tie up silk, in adjacent two unit fibers layers, the fibre of the filament and another unit fibers layer of one of unit fibers layer
Dimension silk is arranged in a crossed manner, and the writing layer is compound in the one side for the unit fibers layer being stacked, and the backsheet layer is compound in layer
On the another side of the unit fibers layer of folded setting, entirety that the writing layer, backsheet layer, the unit fibers layer that is stacked are formed
Structure is fixed on the holder.
The improvement of shellproof blackboard as the present invention, the unit fibers layer are polyethylene fiber layer or aramid fiber
Layer, the articulamentum are adhesive tie.
The improvement of shellproof blackboard as the present invention, the holder include vertical rack and between vertical rack
Horizontal support, the overall structure that the writing layer, backsheet layer, the unit fibers layer that is stacked are formed are connected pivotally to transverse direction
On holder.
For achieving the above object, the present invention provides a kind of production method of shellproof blackboard comprising following steps：
S1, offer are attached with the unit fibers layer of viscose glue thereon, and placement is laminated in multilevel-cell fiber from top to bottom；
S2, the multilevel-cell fiber for placing stacking are sent into press die, and set temperature is heated to；
S3, multilevel-cell fiber laminated into type is cooled to room temperature；
S4, the one side fixation writing layer in multilevel-cell fiber laminated into type, in multilevel-cell fiber laminated into type
Another side stationary backplate layer；
S5, the overall structure of writing layer, backsheet layer, the unit fibers layer formation being stacked is pivotably secured to blackboard
On holder.
The improvement of the production method of shellproof blackboard as the present invention, in the step S2, in the multilayer list that stacking is placed
Release film is placed respectively above and below first fiber.
The improvement of the production method of shellproof blackboard as the present invention, in the step S2, the set temperature is 120-
135℃。
The improvement of the production method of shellproof blackboard as the present invention, in the step S2, by way of multistage lamination
Lamination treatment is carried out to multilevel-cell fiber.
The improvement of the production method of shellproof blackboard as the present invention, in multistage lamination, one section of solidifying pressure is 6Mpa, two
Section solidifying pressure is 10Mpa, and three sections of solidifying pressures are 16Mpa, and four sections of solidifying pressures are set as 16Mpa.
The improvement of the production method of shellproof blackboard as the present invention, in multistage lamination, one section of hardening time is thermocouple
Test temperature is from room temperature to 90 DEG C, and two sections of hardening times are 90 DEG C and are warming up to 90-128 DEG C, and three sections of hardening times are heat-insulation pressure keeping 3
Hour, four sections of hardening times are to be cooled to room temperature the required time.
As the present invention shellproof blackboard production method improvement, the unit fibers layer be polyethylene fiber layer or
Aramid fiber layer, the viscose glue are the glue that can make fiber strong bond.
Compared with prior art, the beneficial effects of the invention are as follows：The shellproof blackboard of the present invention has both bulletproof function, can be
Occur to use as blindage when shooting incident, and then ensures the life security of teachers and students.Meanwhile shellproof blackboard of the invention can also root
According to demand, by pivotably carrying out lateral protection or vertical protection.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments described in invention, for those of ordinary skill in the art, without creative efforts,
Other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of one specific implementation mode of shellproof blackboard of the present invention；
Fig. 2 is the schematic diagram of a layer structure of writing layer, backsheet layer, holder, several unit fibers layers in Fig. 1；
Fig. 3 is the vertical view of the adjacent two unit fibers layers being stacked together.
Specific implementation mode
The present invention is described in detail for each embodiment shown in below in conjunction with the accompanying drawings, but it should explanation, these
Embodiment is not limitation of the present invention, those of ordinary skill in the art according to function, method made by these embodiments,
Or the equivalent transformation in structure or replacement, all belong to the scope of protection of the present invention within.
As shown in Figures 1 to 3, shellproof blackboard of the invention includes：Writing layer 1, backsheet layer 2, holder 3, several unit fibers
Layer 4 and the articulamentum between unit fibers layer 4.The unit fibers layer 4 is polyethylene fiber layer or nonwoven phenolic aldehyde
Layer of cloth.
Several unit fibers layers 4 are stacked from top to bottom, and adjacent unit fibers layer 4 is mutually glued by articulamentum
It connects, it is preferable that the articulamentum is adhesive tie.
Each unit fibrous layer 4 has several lists being mutually parallel by laminar manner compression moulding, any cell fibrous layer 4
To the filament of arrangement, in adjacent two unit fibers layers 4, filament and another list of one of unit fibers layer 4
The filament of first fibrous layer 4 is arranged in a crossed manner.Preferably, in two adjacent unit fibers layers 4, the filametntary angle of intersection is
90°.So set, it makes the shellproof blackboard of the present invention have preferable ballistic performance.
The writing layer 1 is compound in the one side for the unit fibers layer 4 being stacked, and the backsheet layer 2 is compound in stacking
On the another side of the unit fibers layer 4 of setting, the writing layer 1, backsheet layer 2, the unit fibers layer 4 that is stacked form whole
Body structure is fixed on the holder 3.
In one embodiment, the holder 3 includes vertical rack 3 and the lateral branch between vertical rack 3
Frame 3.At this point, the overall structure that the writing layer 1, backsheet layer 2, the unit fibers layer 4 that is stacked are formed is connected pivotally to
On horizontal support 3.So set, can according to demand, by pivotably carrying out lateral protection or vertical protection.
Based on shellproof blackboard as described above, the present invention also provides a kind of production methods of shellproof blackboard comprising as follows
Step：
S1, offer are attached with the unit fibers layer of viscose glue thereon, and placement is laminated in multilevel-cell fiber from top to bottom；
S2, the multilevel-cell fiber for placing stacking are sent into press die, and set temperature is heated to；
S3, multilevel-cell fiber laminated into type is cooled to room temperature；
S4, the one side fixation writing layer in multilevel-cell fiber laminated into type, in multilevel-cell fiber laminated into type
Another side stationary backplate layer；
S5, the overall structure of writing layer, backsheet layer, the unit fibers layer formation being stacked is pivotably secured to blackboard
On holder.
With reference to embodiment specifically, the production method of the shellproof blackboard of the present invention is illustrated.
Embodiment 1
The polyethylene fiber layer for being attached with hot-setting adhesive thereon is provided, placement is laminated in multilaminar polyethylene fiber from top to bottom.
The hot-setting adhesive is phenolic hot-setting adhesive.
Release film is placed respectively above and below the multilaminar polyethylene fiber that stacking is placed, by multilaminar polyethylene fiber
It is sent into press die, is heated to set temperature.The set temperature is 132 DEG C.By multilaminar polyethylene fiber from mould temperature
It is taken out in machine, and is sent into vulcanizer and carries out lamination treatment.
Lamination treatment is carried out to multilaminar polyethylene fiber by way of four sections of laminations, wherein one section of solidifying pressure is
6Mpa, two sections of solidifying pressures are 10Mpa, and three sections of solidifying pressures are 16Mpa, and four sections of solidifying pressures are set as 16Mpa.When one section of solidification
Between be thermocouple assay temperature from room temperature to 90 DEG C, two sections of hardening times are 90 DEG C and are warming up to 100 DEG C, and three sections of hardening times are to protect
Warm pressurize 3 hours, four sections of hardening times are to be cooled to room temperature the required time.Multilaminar polyethylene fibrous layer laminated into type is cold
But to room temperature.
Writing layer is fixed in the one side of multilaminar polyethylene fibrous layer laminated into type, it is fine in multilaminar polyethylene laminated into type
Tie up the another side stationary backplate layer of layer.The overall structure pivot that writing layer, backsheet layer, the polyethylene fiber layer that is stacked are formed
Turn ground to be fixed on blackboard holder.
Embodiment 2
Offer is attached with the nonwoven phenolic aldehyde cloth of hot-setting adhesive layer by layer thereon, and multilayer nonwoven phenolic aldehyde layer of cloth is laminated from top to bottom and is put
It sets.The hot-setting adhesive is phenolic hot-setting adhesive.
Release film is placed respectively above and below the multilayer nonwoven phenolic aldehyde layer of cloth that stacking is placed, by the surrounding of release film
By sealing glue sticking, multilayer nonwoven phenolic aldehyde layer of cloth is sent into press die, set temperature is heated to.The setting temperature
Degree is 135 DEG C.Multilayer nonwoven phenolic aldehyde layer of cloth is taken out from die heater, and is sent into vulcanizer and carries out lamination treatment.
Lamination treatment is carried out to multilayer nonwoven phenolic aldehyde layer of cloth by way of four sections of laminations, wherein one section of solidifying pressure is
6Mpa, two sections of solidifying pressures are 10Mpa, and three sections of solidifying pressures are 16Mpa, and four sections of solidifying pressures are set as 16Mpa.When one section of solidification
Between be thermocouple assay temperature from room temperature to 90 DEG C, two sections of hardening times are 90 DEG C and are warming up to 128 DEG C, and three sections of hardening times are to protect
Warm pressurize 3 hours, four sections of hardening times are to be cooled to room temperature the required time.Multilayer nonwoven phenolic aldehyde layer of cloth laminated into type is cold
But to room temperature.
Writing layer is fixed in the one side of multilayer nonwoven phenolic aldehyde layer of cloth laminated into type, in multilayer nonwoven phenolic aldehyde laminated into type
The another side stationary backplate layer of layer of cloth.The overall structure pivot that writing layer, backsheet layer, the nonwoven phenolic aldehyde layer of cloth that is stacked are formed
Turn ground to be fixed on blackboard holder.
In conclusion the shellproof blackboard of the present invention improves the thermosetting performance of shellproof blackboard, be conducive to the life of shellproof blackboard
Production processing.In addition, the shellproof blackboard of the present invention is laminated by multilevel-cell fiber, what often layer of non-woven fabric use was unidirectionally arranged
The fibrous layer of filament, adjacent unit fibers layer is arranged in a crossed manner, such that the shellproof blackboard of the present invention has preferable shellproof
Performance.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (10)
1. a kind of shellproof blackboard, which is characterized in that the shellproof blackboard includes：Writing layer, backsheet layer, holder, several units are fine
Tie up layer and the articulamentum between unit fibers layer；
Several unit fibers layers are stacked from top to bottom, and adjacent unit fibers layer is mutually bonded by articulamentum, each list
First fibrous layer has several fibers unidirectionally arranged being mutually parallel by laminar manner compression moulding, any cell fibrous layer
Thread, in adjacent two unit fibers layers, the fiber of the filament and another unit fibers layer of one of unit fibers layer
Silk is arranged in a crossed manner, and the writing layer is compound in the one side for the unit fibers layer being stacked, and the backsheet layer is compound in stacking
On the another side of the unit fibers layer of setting, whole knot that the writing layer, backsheet layer, the unit fibers layer that is stacked are formed
Structure is fixed on the holder.
2. shellproof blackboard according to claim 1, which is characterized in that the unit fibers layer be polyethylene fiber layer or
Aramid fiber layer, the articulamentum are adhesive tie.
3. shellproof blackboard according to claim 1, which is characterized in that the holder includes vertical rack and is located at vertically
Horizontal support between holder, the overall structure that the writing layer, backsheet layer, the unit fibers layer that is stacked are formed is pivotally
It is connected on horizontal support.
4. a kind of production method of shellproof blackboard, which is characterized in that the production method includes the following steps：
S1, offer are attached with the unit fibers layer of viscose glue thereon, and placement is laminated in multilevel-cell fiber from top to bottom；
S2, the multilevel-cell fiber for placing stacking are sent into press die, and set temperature is heated to；
S3, multilevel-cell fiber laminated into type is cooled to room temperature；
S4, the one side fixation writing layer in multilevel-cell fiber laminated into type, in the another of multilevel-cell fiber laminated into type
Stationary backplate layer on one side；
S5, the overall structure of writing layer, backsheet layer, the unit fibers layer formation being stacked is pivotably secured to blackboard holder
On.
5. the production method of shellproof blackboard according to claim 4, which is characterized in that in the step S2, put in stacking
Release film is placed respectively above and below the multilevel-cell fiber set.
6. the production method of shellproof blackboard according to claim 4, which is characterized in that in the step S2, the setting
Temperature is 120-135 DEG C.
7. the production method of shellproof blackboard according to claim 4, which is characterized in that in the step S2, pass through multistage
The mode of lamination carries out lamination treatment to multilevel-cell fiber.
8. the production method of shellproof blackboard according to claim 7, which is characterized in that in multistage lamination, one section of solidification pressure
Power is 6Mpa, and two sections of solidifying pressures are 10Mpa, and three sections of solidifying pressures are 16Mpa, and four sections of solidifying pressures are set as 16Mpa.
9. the production method of shellproof blackboard according to claim 8, which is characterized in that multistage lamination in, one section solidification when
Between be thermocouple assay temperature from room temperature to 90 DEG C, two sections of hardening times are 90 DEG C and are warming up to 90-128 DEG C, three sections of hardening times
For heat-insulation pressure keeping 3 hours, four sections of hardening times were to be cooled to room temperature the required time.
10. the production method of shellproof blackboard according to claim 4, which is characterized in that the unit fibers layer is poly- second
Alkene fibrous layer or aramid fiber layer, the viscose glue are the glue that can make fiber strong bond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810646636.1A CN108790303A (en) | 2018-06-21 | 2018-06-21 | A kind of shellproof blackboard and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810646636.1A CN108790303A (en) | 2018-06-21 | 2018-06-21 | A kind of shellproof blackboard and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108790303A true CN108790303A (en) | 2018-11-13 |
Family
ID=64084497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810646636.1A Pending CN108790303A (en) | 2018-06-21 | 2018-06-21 | A kind of shellproof blackboard and preparation method thereof |
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|---|---|---|---|---|
| CN1515406A (en) * | 2000-07-13 | 2004-07-28 | 陈成泗 | Production method of PE weftless fabric board material |
| CN101454634A (en) * | 2006-03-30 | 2009-06-10 | 霍尼韦尔国际公司 | Molded ballistic panel with enhanced structural performance |
| CN103025517A (en) * | 2010-07-30 | 2013-04-03 | 纳幕尔杜邦公司 | Composites and ballistic resistant armor articles containing the composites |
| CN204612596U (en) * | 2014-12-31 | 2015-09-02 | 帝斯曼知识产权资产管理有限公司 | A kind of shellproof chest plate |
| CN206274239U (en) * | 2016-11-10 | 2017-06-23 | 北京威亚高性能纤维有限公司 | Environmentally friendly, light flame resistant, ballistic resistant plate |
| CN207123219U (en) * | 2017-09-07 | 2018-03-20 | 北京普凡防护科技有限公司 | A kind of shellproof board of multifunctional police formula |
-
2018
- 2018-06-21 CN CN201810646636.1A patent/CN108790303A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1515406A (en) * | 2000-07-13 | 2004-07-28 | 陈成泗 | Production method of PE weftless fabric board material |
| CN101454634A (en) * | 2006-03-30 | 2009-06-10 | 霍尼韦尔国际公司 | Molded ballistic panel with enhanced structural performance |
| CN103025517A (en) * | 2010-07-30 | 2013-04-03 | 纳幕尔杜邦公司 | Composites and ballistic resistant armor articles containing the composites |
| CN204612596U (en) * | 2014-12-31 | 2015-09-02 | 帝斯曼知识产权资产管理有限公司 | A kind of shellproof chest plate |
| CN206274239U (en) * | 2016-11-10 | 2017-06-23 | 北京威亚高性能纤维有限公司 | Environmentally friendly, light flame resistant, ballistic resistant plate |
| CN207123219U (en) * | 2017-09-07 | 2018-03-20 | 北京普凡防护科技有限公司 | A kind of shellproof board of multifunctional police formula |
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Application publication date: 20181113 |
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