CN103009735B - A kind of substrate and display unit - Google Patents
A kind of substrate and display unit Download PDFInfo
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- CN103009735B CN103009735B CN201210540465.7A CN201210540465A CN103009735B CN 103009735 B CN103009735 B CN 103009735B CN 201210540465 A CN201210540465 A CN 201210540465A CN 103009735 B CN103009735 B CN 103009735B
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Abstract
The present invention relates to substrate fabrication techniques field, disclose a kind of substrate and display unit.The material composition of described substrate mainly comprises PETG-1,4-CHDM ester (PETG) and Merlon (PC).Adopt PETG-1,4-CHDM ester and Merlon and other auxiliary agents etc. by polyblend, prepared and there is the individual layer of excellent properties and the substrate of stepped construction.Especially having prepared glassy layer is inner interlayer, and PETG, PC, glass fibre and other auxiliary agent intermingling materials are outer field substrate.The substrates pass test prepared finds that it has good light transmission and temperature tolerance, its acid and alkali-resistance, and chemical stability is good, and water vapor transmittance is low, and have excellent processing characteristics, production efficiency is high, consumes energy little, environmental protection, steady quality.
Description
Technical field
The present invention relates to substrate fabrication techniques field, particularly relate to a kind of substrate and display unit.
Background technology
Along with social progress and development in science and technology, Flexible Displays is obtained extensive concern with its collapsible performance such as bending, can be widely used in e-book, announce hurdle, the mobile field such as to carry.And compare than glass, tinsel advantages such as having gentlier, thinner, more shock-resistant as the plastic substrate of flexible base board.But the temperature resistance energy of substrate, resistance to steam, resistance to oxygen and chemical resistance etc. need to promote.
As the plastic substrate of flexible display, it should have good dimensional stability, has higher glass transition temperature and lower thermal coefficient of expansion, has excellent barrier property, and its light transmittance and chemical-resistance excellent.In the prior art, generally using polyethylene terephthalate (PET) as flexible substrate material, but the glass transition temperature of PET is only 76.5 DEG C, and thermal coefficient of expansion is 79.2ppm/K.Prior art also relate to a kind of flexible base board of flexible display, and this flexible base board polymethyl methacrylate (PMMA) is prepared as stock, but its heatproof is only 90 DEG C, and range of application is subject to larger restriction.The heat resistance of aforesaid substrate, air-tightness and decay resistance have much room for improvement.
Summary of the invention
In order to overcome defect of the prior art, the invention provides a kind of substrate and display unit.
The present invention relates to a kind of substrate, the material composition of described substrate comprises PETG-1,4-CHDM ester and Merlon.
Described substrate comprises the PETG-1 that parts by weight are 20-40 part, 4-cyclohexanedimethanoester ester, parts by weight are the Merlon of 60-80 part, parts by weight are the glass fibre of 0-10 part, parts by weight are the ultraviolet absorber of 0-1 part, and parts by weight are the antioxidant of 0-1 part.
As a kind of embodiment, described substrate is the PETG-1 by being 20-40 part by parts by weight, 4-cyclohexanedimethanoester ester, parts by weight are the Merlon of 60-80 part, parts by weight are the glass fibre of 0-10 part, and the antioxidant of parts by weight to be the ultraviolet absorber of 0-1 part and parts by weight be 0-1 part carries out forming processes after carrying out melt blending and is prepared from.Machine-shaping can adopt processing of high molecular material common method, as injection mo(u)lding, extrusion molding etc.
Described substrate comprises the first sheet material made primarily of PETG-1,4-CHDM ester and the second sheet material made primarily of makrolon material.
Preferably, described first sheet material and/or the second sheet material also comprise glass fibre, ultraviolet absorber, one or more in antioxidant.
Preferably, described first sheet material comprises the PETG-1 that parts by weight are 20-40 part, 4-cyclohexanedimethanoester ester, parts by weight are the glass fibre of 0-10 part, content is PETG-1, the ultraviolet absorber of 4-cyclohexanedimethanoester ester and glass fiber weight sum 0-1%, content is the antioxidant of PETG-1,4-CHDM ester and glass fiber weight sum 0-1%.
Preferably, the glass fibre that described second sheet material comprises Merlon that parts by weight are 60-80 part, parts by weight are 0-10 part, content is the ultraviolet absorber of Merlon and glass fiber weight sum 0-1%, and content is the antioxidant of Merlon and glass fiber weight sum 0-1%.
As another kind of embodiment, described substrate is fitted by the first sheet material and the second sheet material and is formed.The method that sheet material laminating can adopt processing of high molecular material conventional, as laminated into type, also can adopt solution coating process, by PETG-1,4-cyclohexanedimethanoester ester dissolves in a solvent, is coated on polycarbonate sheet surface, forms stepped construction.
Preferably, described first sheet material is set to the top layer of substrate.
The invention still further relates to a kind of substrate, comprise glassy layer, preferably, described substrate intermediate layer is described glassy layer.The multilayer board layer that glassy layer both sides are respectively single layer substrate layer prepared by a kind of embodiment described in two or prepare for the another kind of embodiment described in two.
The invention still further relates to the application of aforesaid substrate in display device technology field, especially as the application of flexible display substrates.Because substrate of the present invention has light, thin and deflection, so be more suitable for as flexible base board.
The Advantageous Effects that the present invention realizes has at least:
Substrate provided by the present invention, PETG-1 in its material composition, 4-cyclohexanedimethanoester ester (PETG) barrier and chemical-resistant stability excellence, Merlon (PC) has high glass transition temperature (150 DEG C) and lower thermal coefficient of expansion (70.2ppm/K), by processing of high molecular material method, the substrate that stepped construction prepared by the first sheet material and the laminating of the second sheet material is had good alkali resistance.Both PETG and PC, structure is similar, refractive index close, compatibility good, can prepare the substrate of the blended single layer structure of PETG and PC.By adding glass fibre to substrate modification, temperature tolerance and the intensity of substrate can be increased considerably.Preferably comprise the substrate of the sandwich of glassy layer, effectively can improve the resistance to air-tightness of substrate.Substrate of the present invention can be flexible base board, its excellent heat stability, has excellent resistance to chemical attack ability, and its air-tightness is good, effectively improves the life-span of display.
Accompanying drawing explanation
Fig. 1 is the substrate schematic diagram of PETG and PC stepped construction in the embodiment of the present invention;
Fig. 2 is the substrate schematic diagram of the blended single layer structure of PETG and PC in the embodiment of the present invention;
Fig. 3 is the substrate schematic diagram of PETG and glass fiber reinforcement PC stepped construction in the embodiment of the present invention;
Fig. 4 is the substrate schematic diagram of glass fiber reinforcement PETG and PC stepped construction in the embodiment of the present invention;
Fig. 5 is the substrate schematic diagram of glass fiber reinforcement PETG and glass fiber reinforcement PC stepped construction in the embodiment of the present invention;
Fig. 6 is the substrate schematic diagram of PETG, PC and the blended single layer structure of glass fibre in the embodiment of the present invention;
Fig. 7 is the substrate schematic diagram that the embodiment of the present invention comprises glassy layer.
Detailed description of the invention
Illustrate in greater detail substrate of the present invention and display unit by embodiment, but the present invention is not by the restriction of these embodiments.
Embodiment 1
By PETG and PC respectively processing of high molecular material method conveniently prepare PETG first sheet material 1 and PC second sheet material 2, wherein the parts by weight of PETG and PC are respectively 30 parts and 70 parts, do not add ultraviolet absorber and antioxidant.PETG first sheet material 1 and PC second sheet material 2 are fitted, laminating type adopts laminated into type, obtains the substrate of PETG and PC stepped construction as shown in Figure 1.The benefit of this kind of way is that PETG has excellent chemical resistance and scratch-resistant performance; thus effectively protect the defect of PC not resistance to chemical attack not scratch-resistant; in addition; stepped construction substrate air tightness performance also promotes to some extent; but outer field PETG heat resistance is not as good as PC substrate, therefore the temperature tolerance of the present embodiment substrate is not as PC substrate.Test result is in table 1.
In present embodiment except adopt PC sheet material and PETG sheet layer molded, also can adopt solution coating process, specifically, by PC conveniently Process Technology of Polymer method be prepared into sheet material, PETG is dissolved in a solvent, is coated on PC sheet surface, form the substrate of stepped construction.Especially, strict restriction is not needed for the substrate P C of stepped construction and the weight ratio of PETG.
In present embodiment, the laminating number of plies included by substrate formed after laminating is not limited to two-layer, also can be formed by PETG first sheet material 1 and more than 2 the overlapping laminating of PC second sheet material.Preferably, PETG first sheet material 1 is set to the top layer of substrate.
Embodiment 2
PC is dried 5 hours in 100 DEG C of vacuum drying chambers, PETG is dried 5 hours in 65 DEG C of vacuum drying chambers, PC and PETG is mixed, wherein, the parts by weight of PC and PETG are respectively 70 parts and 30 parts, and the parts by weight of ultraviolet absorber and antioxidant are respectively 0.5 part and 0.5 part.The material mixed is joined in screw extruder and melt extrudes, then its injection mo(u)lding is prepared the substrate 3 of the blended single layer structure of PETG and PC as shown in Figure 2.This embodiment as different from Example 1 raw material is carried out blended after carry out shaping again, benefit is that step is less, easy, eliminates independent procedure of processing.Test result is in table 1.
Embodiment 3
The present embodiment is consistent with embodiment 1 method, by the PC of PETG and glass fiber reinforcement respectively processing of high molecular material method conveniently prepare PC second sheet material 4 of PETG first sheet material 1 and glass fiber reinforcement.Wherein, in PETG first sheet material 1, the parts by weight of PETG are 30 parts, and the content of ultraviolet absorber is 1% of PETG weight, and the content of antioxidant is 1% of PETG weight; In PC second sheet material 4 of glass fiber reinforcement, the parts by weight of PC are 60 parts, and glass fiber weight number is 10 parts, and the content of ultraviolet absorber is 1% of PC and glass fiber weight sum, and the content of antioxidant is 1% of PC and glass fiber weight sum.PC second sheet material 4 of PETG first sheet material 1 and glass fiber reinforcement is fitted, obtains the substrate of PETG as shown in Figure 3 and glass fiber reinforcement PC stepped construction.The benefit of this embodiment is, by the humidification of glass fibre, the substrate prepared has higher heat resistance, and higher pliable and tough rebound performance.Test result is in table 1.
In present embodiment, the laminating number of plies included by substrate formed after laminating is not limited to two-layer, also can be formed by PC second sheet material more than 4 the overlapping laminating of PETG first sheet material 1 and fiberglass reinforced.Preferably, PETG first sheet material 1 is set to the top layer of substrate.
Embodiment 4
The present embodiment is consistent with the thinking of embodiment 3, by PETG and PC of glass fiber reinforcement respectively processing of high molecular material method conveniently prepare PETG first sheet material 5 and PC second sheet material 2 of glass fiber reinforcement.Wherein, in PETG first sheet material 5 of glass fiber reinforcement, the parts by weight of PETG are 20 parts, the parts by weight of glass fibre are 10 parts, and UV absorption agent content is 0.5% of PETG and glass fiber weight sum, and oxidation preventive content is 1% of PETG and glass fiber weight sum; The parts by weight 70 parts of PC in PC second sheet material 2, UV absorption agent content is 0.5% of PC weight, and oxidation preventive content is 1% of PC weight.PETG first sheet material 5 of glass fiber reinforcement and PC second sheet material 2 are fitted, obtains the substrate of stepped construction as shown in Figure 4.The benefit of this embodiment is, by the humidification of glass fibre, the substrate prepared has higher heat resistance, and higher pliable and tough rebound performance.Test result is in table 1.
In present embodiment, the laminating number of plies included by substrate formed after laminating is not limited to two-layer, also can be formed by PETG first sheet material 5 of fiberglass reinforced and more than 2 the overlapping laminating of PC second sheet material.Preferably, PETG first sheet material 5 of fiberglass reinforced is set to the top layer of substrate.
Embodiment 5
The present embodiment is consistent with the thinking of embodiment 3,4, by the PC of the PETG of glass fiber reinforcement and glass fiber reinforcement respectively processing of high molecular material method conveniently prepare PETG first sheet material 5 of glass fiber reinforcement and PC second sheet material 4 of glass fiber reinforcement.Wherein, in PETG first sheet material 5 of glass fiber reinforcement, the parts by weight of PETG are 30 parts, the parts by weight of glass fibre are 3 parts, and UV absorption agent content is 0.5% of PETG and glass fiber weight sum, and oxidation preventive content is 0.5% of PETG and glass fiber weight sum; The parts by weight 70 parts of PC in PC second sheet material 4 of glass fiber reinforcement, the parts by weight of glass fibre are 7 parts, and UV absorption agent content is 0.5% of PC and glass fiber weight sum, and oxidation preventive content is PC and glass fiber weight sum 0.5%.PETG first sheet material 5 of glass fiber reinforcement and PC second sheet material 4 of glass fiber reinforcement are fitted, obtains the substrate of stepped construction as shown in Figure 5.The benefit of this embodiment is, by the humidification of glass fibre, the substrate prepared has higher heat resistance, and higher pliable and tough rebound performance.Test result is in table 1.
In present embodiment, the laminating number of plies included by substrate formed after laminating is not limited to two-layer, also can be formed by PC second sheet material more than 4 the overlapping laminating of PETG first sheet material 5 of glass fiber reinforcement and glass fiber reinforcement.Preferably, PETG first sheet material 5 of fiberglass reinforced is set to the top layer of substrate.
Embodiment 6
PC is dried in 100 DEG C of vacuum drying chambers 5 hours, PETG dries 5 hours in 65 DEG C of vacuum drying chambers, proportionally mixed, wherein, the parts by weight of PETG and PC are respectively 25 parts and 65 parts, the parts by weight of glass fibre are 10 parts, and the parts by weight of ultraviolet absorber and antioxidant are respectively 0.3 part and 0.4 part.
The material mixed is joined in screw extruder and melt extrudes, then by its injection mo(u)lding, prepare the substrate 6 of PETG, PC as shown in Figure 6 and the blended single layer structure of glass fibre.This embodiment as different from Example 1 raw material is carried out blended after carry out injection mo(u)lding again, benefit is that step is less, easy, eliminates independent procedure of processing.Due to the glass fibre increased, there is further raising relative to its heat resistance of substrate of embodiment 2.Test result is in table 1.
Embodiment 7
Prepare PETG, PC and glass fibre blending polymerization nitride layer 8 according to method described in embodiment 6, polymeric layer 8 and glassy layer 7 are fitted, obtain the substrate comprising glassy layer as shown in Figure 7, glassy layer is arranged at the intermediate layer of substrate.What benefit was glassy layer adds the air-tightness that effectively can promote substrate, and significantly improve the through performance of resistance to steam of substrate, and the polymeric layer on glassy layer both sides provides protective effect, this design makes the combination property of substrate more excellent.Test result is in table 1.
Glassy layer is as the intermediate layer of substrate, among the laminating type that also can be applied to the first sheet material and the second sheet material, glassy layer is fitted with the first sheet material and the second sheet material respectively as intermediate layer, certainly, the substrate layer of the first sheet material and the second sheet material or stepped construction and the laminating form of glassy layer are not limit, it also can effectively improve the air-tightness promoting substrate, does not just repeat one by one here.
Embodiment 8
By PETG and PC respectively processing of high molecular material method conveniently prepare PETG first sheet material 1 and PC second sheet material 2, wherein, the parts by weight of PETG first sheet material 1 and PC second sheet material 2 are respectively 20 parts and 80 parts, do not add ultraviolet absorber and antioxidant.PETG first sheet material 1 and PC second sheet material 2 are fitted, obtains the substrate of PETG and PC stepped construction as shown in Figure 1.The benefit of this kind of way is that PETG has excellent chemical resistance and scratch-resistant performance; thus effectively protect the defect of PC not resistance to chemical attack not scratch-resistant; in addition the air tightness performance of substrate also promotes to some extent; but outer field PETG heat resistance is not as good as PC substrate, improve relative to its heat resistance of embodiment 1.Test result is in table 1.
Embodiment 9
By PETG and PC respectively processing of high molecular material method conveniently prepare PETG first sheet material 1 and PC second sheet material 2.Wherein, in PETG first sheet material 1, the parts by weight of PETG are 40 parts, and UV absorption agent content is 0.8% of PETG weight, and oxidation preventive content is 0.5% of PETG weight; The parts by weight 60 parts of PC in PC second sheet material 2, UV absorption agent content is 0.8% of PC weight, and oxidation preventive content is 0.5% of PC weight., PETG first sheet material 1 and PC second sheet material 2 are fitted, obtain the substrate of PETG and PC stepped construction as shown in Figure 1.The benefit of this kind of way is that PETG has excellent chemical resistance and scratch-resistant performance; thus effectively protect the defect of PC not resistance to chemical attack not scratch-resistant; in addition the air tightness performance of substrate also promotes to some extent; but the PETG heat resistance on top layer is not as good as PC substrate, decrease relative to its heat distortion temperature of substrate of embodiment 1.Test result is in table 1.
Embodiment 10
PC is dried 5 hours in 100 DEG C of vacuum drying chambers, PETG is dried 5 hours in 65 DEG C of vacuum drying chambers, proportionally PC and PETG is mixed, wherein, PETG and PC parts by weight are respectively 20 parts and 80 parts, and the parts by weight of ultraviolet absorber and antioxidant are respectively 1 part and 1 part.
The material mixed is joined in screw extruder and melt extrudes, then its injection mo(u)lding is prepared the substrate 3 of the blended single layer structure of PETG and PC as shown in Figure 2.This embodiment as different from Example 1 raw material is carried out blended after carry out shaping again, benefit is that step is less, easy, eliminates independent procedure of processing.Test result is in table 1.
Embodiment 11
PC is dried 5 hours in 100 DEG C of vacuum drying chambers, PETG is dried 5 hours in 65 DEG C of vacuum drying chambers, proportionally PC and PETG is mixed, wherein, the parts by weight of PETG and PC are respectively 40 parts and 60 parts, do not add glass fibre, ultraviolet absorber and antioxidant.
The material mixed is joined in screw extruder and melt extrudes, then its injection mo(u)lding is prepared the substrate 3 of the blended single layer structure of PETG and PC as shown in Figure 2.This embodiment as different from Example 1 raw material is carried out blended after carry out injection mo(u)lding again, benefit is that step is less, easy, eliminates independent procedure of processing.Compared with the substrate of embodiment 2, because the proportion of the substrate P ETG of the present embodiment increases, and do not add ultraviolet absorber and antioxidant, its heat distortion temperature reduces.Test result is in table 1.
Embodiment 12
PC is dried in 100 DEG C of vacuum drying chambers 5 hours, PETG dries 5 hours in 65 DEG C of vacuum drying chambers, proportionally PETG and PC is mixed, wherein, the parts by weight of PETG and PC are respectively 40 parts and 55 parts, the parts by weight of glass fibre are 5 parts, and the parts by weight of ultraviolet absorber and antioxidant are respectively 0.5 part and 0.3 part.
The material mixed is joined in screw extruder and melt extrudes, then its injection mo(u)lding is prepared the substrate 6 of PETG, PC as shown in Figure 2 and the blended single layer structure of glass fibre.This embodiment as different from Example 1 raw material is carried out blended after carry out injection mo(u)lding again, benefit is that step is less, easy, eliminates independent procedure of processing.Due to the glass fibre increased, there is further raising relative to its heat resistance of substrate of embodiment 2.Test result is in table 1.
Comparative example
PC processing of high molecular material method is conveniently prepared PC substrate, and test result is as table 1.
The substrate obtained in embodiment 1 to 12 and comparative example is tested, method of testing is as follows: chemical resistance directly uses dipping by lye 24 hours, resistance to steam test is tested according to GB1037-1970, heat distortion temperature is according to standard A STM D648, wearability test is according to standard A STM D735-2006, and resistance to marring is according to GB/T2410-1980 standard testing.By characterizing the resistivity of baseplate material to chemical substance to the test of alkali resistance; The resistance to steam Experimental Characterization air-tightness of material; Heat distortion temperature characterizes the temperature capacity of material; The method of test resistance to marring is that test its properties of transparency after carrying out a certain amount of friction to material, light transmittance is higher, mist degree is lower, and the properties of transparency of baseplate material is stronger, and resistance to marring is better.Test result is as shown in table 1.Relative to comparative example PC substrate, the combination property of the substrate in embodiment 1-12 is more excellent, particularly the substrate of the sandwich of embodiment 7, it can be alkaline-resisting, have good air-tightness and heat distortion temperature, light transmittance is high and mist degree is low, has excellent combination property.
The substrate of embodiment of the present invention 1-12, because it is light, thin and deflection, is particularly suitable as flexible base board, can be applicable in display unit.The display unit of the present embodiment can be product or the parts that liquid crystal panel, Electronic Paper, LCD TV, liquid crystal display, DPF, mobile phone, panel computer etc. have any Presentation Function.
The substrate the performance test results of table 1 embodiment of the present invention and comparative example
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (9)
1. a substrate, is characterized in that, the material composition of described substrate comprises PETG-1,4-CHDM ester and Merlon; Described substrate comprises primarily of PETG-1, the first sheet material that 4-cyclohexanedimethanoester ester is made and the second sheet material made primarily of makrolon material, and the glassy layer between described first sheet material and described second sheet material, described substrate is flexible display substrates.
2. substrate as claimed in claim 1, it is characterized in that, described substrate comprises the PETG-1 that parts by weight are 20-40 part, 4-cyclohexanedimethanoester ester, parts by weight are the Merlon of 60-80 part, parts by weight are the glass fibre of 0-10 part, the antioxidant of parts by weight to be the ultraviolet absorber of 0-1 part and parts by weight be 0-1 part.
3. substrate as claimed in claim 2, it is characterized in that, described substrate is the PETG-1 by being 20-40 part by parts by weight, 4-cyclohexanedimethanoester ester, parts by weight are the Merlon of 60-80 part, parts by weight are the glass fibre of 0-10 part, and the antioxidant of parts by weight to be the ultraviolet absorber of 0-1 part and parts by weight be 0-1 part carries out forming processes after carrying out melt blending and is prepared from.
4. substrate as claimed in claim 1, it is characterized in that, described first sheet material and/or the second sheet material also comprise glass fibre, ultraviolet absorber, one or more in antioxidant.
5. substrate as claimed in claim 4, it is characterized in that, described first sheet material comprises the PETG-1 that parts by weight are 20-40 part, 4-cyclohexanedimethanoester ester, parts by weight are the glass fibre of 0-10 part, content is PETG-1, the ultraviolet absorber of 4-cyclohexanedimethanoester ester and glass fiber weight sum 0-1%, content is the antioxidant of PETG-1,4-CHDM ester and glass fiber weight sum 0-1%.
6. substrate as claimed in claim 4, it is characterized in that, the glass fibre that described second sheet material comprises Merlon that parts by weight are 60-80 part, parts by weight are 0-10 part, content is the ultraviolet absorber of Merlon and glass fiber weight sum 0-1%, and content is the antioxidant of Merlon and glass fiber weight sum 0-1%.
7. substrate as claimed in claim 1, is characterized in that, described substrate is fitted by the first sheet material and the second sheet material and formed.
8. substrate as claimed in claim 1, it is characterized in that, described first sheet material is set to the top layer of substrate.
9. a display unit, is characterized in that, comprises the substrate as described in any one of claim 1-8.
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| CN201210540465.7A CN103009735B (en) | 2012-12-13 | 2012-12-13 | A kind of substrate and display unit |
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| CN201210540465.7A CN103009735B (en) | 2012-12-13 | 2012-12-13 | A kind of substrate and display unit |
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| CN103009735B true CN103009735B (en) | 2015-10-14 |
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| CN105611775B (en) * | 2016-03-16 | 2018-12-07 | 浙江宇视科技有限公司 | Video camera substrate and its manufacturing method |
| CN109616575A (en) * | 2018-12-10 | 2019-04-12 | 武汉华星光电半导体显示技术有限公司 | Flexible display panels and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864161B (en) * | 2010-06-24 | 2011-12-21 | 上海达凯塑胶有限公司 | Makrolon/modified polyester blending rolling base material and preparation method thereof |
| CN202164268U (en) * | 2011-08-03 | 2012-03-14 | 上海艾乐影像材料有限公司 | Adhesive film |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864161B (en) * | 2010-06-24 | 2011-12-21 | 上海达凯塑胶有限公司 | Makrolon/modified polyester blending rolling base material and preparation method thereof |
| CN202164268U (en) * | 2011-08-03 | 2012-03-14 | 上海艾乐影像材料有限公司 | Adhesive film |
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