CN104031571B - A kind of easy stripping tape that expands - Google Patents
A kind of easy stripping tape that expands Download PDFInfo
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- CN104031571B CN104031571B CN201410243009.5A CN201410243009A CN104031571B CN 104031571 B CN104031571 B CN 104031571B CN 201410243009 A CN201410243009 A CN 201410243009A CN 104031571 B CN104031571 B CN 104031571B
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- porous membrane
- membrane layer
- layer
- sensitive adhesive
- pressure
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- 239000010410 layer Substances 0.000 claims abstract description 172
- 239000012528 membrane Substances 0.000 claims abstract description 81
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 54
- 229920000642 polymer Polymers 0.000 claims abstract description 35
- 239000002390 adhesive tape Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 3
- 229920002799 BoPET Polymers 0.000 description 14
- 229920000139 polyethylene terephthalate Polymers 0.000 description 14
- 239000011521 glass Substances 0.000 description 13
- 239000003292 glue Substances 0.000 description 6
- 229920001903 high density polyethylene Polymers 0.000 description 6
- 239000004700 high-density polyethylene Substances 0.000 description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000092 linear low density polyethylene Polymers 0.000 description 2
- 239000004707 linear low-density polyethylene Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- -1 thickness is 0.01mm Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a kind of easy stripping tape that expands, it comprises release film, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer successively, or comprises release film, porous membrane layer, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer successively.The adhesive tape of different bond effect and differing temps stripping can be prepared by change pressure sensitive adhesive and porous-film.Without obvious cull after easy stripping tape disclosed by the invention comes unstuck, normal temperature cohesive strength is high, and after adding thermal expansion, cohesive strength significantly reduces, and peeling effect is good, and preparation difficulty is little, and production cost is low.
Description
Technical field
The invention belongs to field of polymer technology, relate to a kind of easily stripping tape, be specifically related to a kind of easy stripping tape that expands, the fields such as processing, process protection, laminating, bonding can be widely used in.
Background technology
Adhesive tape is widely used in the every field of living, producing, and in order to long work-ing life can be had, generally all can require that it has high cohesive strength, this but brings trouble to operations such as separation if desired, dismounting, heavy industrys when ensureing use safety.Some material wishes to protect it in the course of processing, makes it avoid scratching or contaminated, and adhesive tape will be removed after machining, this also requires that adhesive tape has good separability.
Summary of the invention
The object of the invention is to provide a kind of easy stripping tape that expands, it has higher cohesive strength under normal conditions, and after heating, cohesive strength obviously declines, and can realize easily peeling off.
The object of the invention is to be achieved through the following technical solutions:
A kind of easy stripping tape that expands, comprise release film, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer successively, wherein porous membrane layer is the rete of heat expandable.
A kind of easy stripping tape that expands, comprise release film, porous membrane layer, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer successively, wherein porous membrane layer is the rete of heat expandable.
The pressure-sensitive adhesive layer of polymer-based rete both sides is same or different glue.Glue type comprises acrylic acid or the like, silica type.Just different bond effects can be realized when both sides glue is different.
The porous membrane layer of polymer-based rete both sides is same or different retes.
Described porous membrane layer comprises the macromolecular material being no less than 70% quality.
Described porous membrane layer comprises the thermic inflatable elastomeric particulate of 10-45% quality, and described thermic inflatable elastomeric particulate is selected from macromolecular material.
Described porous membrane layer thickness is 0.005-0.5mm.
Described porous membrane layer is the rete of heat expandable, and its expansion Heating temperature is 90-180 DEG C.When the expansion temperature of the porous membrane layer of both sides is different, in the heat-processed from low temperature to high temperature, the rete of low bulk temperature first expands, and can first peel off, thus realizes the stripping of adhesive tape both sides adherend differing temps.
After the rete heating of described heat expandable, size may expand to full-sized 1.1-20 doubly.
The ratio of described porous membrane layer hole area accounts for the 10-90% of the total area.
The ratio of described porous membrane layer hole area accounts for the 20-80% of the total area.
The ratio of described porous membrane layer hole area accounts for the 30-70% of the total area.
The ratio of described porous membrane layer hole area accounts for the 40-60% of the total area.
The hole shape of described porous membrane layer comprises circle, square etc. regular shape, also comprises irregularly shaped; The arrangement in hole is orderly or unordered; Hole dimension is at 0.001-1mm.
The beneficial effect that the present invention has is as follows:
1. the introducing of porous membrane layer achieves the characteristic easily peeled off, thus does not need to need to prepare special glue-line as traditional easy stripping tape.
2. the introducing of porous membrane layer decreases the contact area of glue and adherend, and the probability after coming unstuck, adherend leaving cull declines to a great extent.
3. the polymer material of main part for the preparation of porous membrane layer is numerous, and the preparation difficulty of the easy stripping tape that makes to expand reduces.
4. the adhesive tape prepared by this patent just can play the effect regulating cohesive strength by adjustment porous membrane layer being carried out to hole dimension, hole area etc., and does not need to adjust the formula of glue, realizes effective, convenient and easy.
Accompanying drawing explanation
Fig. 1 is the schematic cross-section of the easy stripping tape of a kind of expansion of the present invention.
Fig. 2 is the schematic cross-section of the easy stripping tape of another kind of expansion of the present invention.
Embodiment
Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Below in conjunction with the drawings and the specific embodiments, the present invention is described in detail.In example, the content of each material composition is mass percent.
embodiment 1
The easy stripping tape that the present embodiment relates to comprises release film successively, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer, as shown in Figure 1, wherein polymer-based rete is PET film layer, the pressure-sensitive adhesive layer of PET film layer both sides is identical, porous membrane layer is the LDPE rete containing 35% thermic inflatable elastomeric particulate, thickness is 0.005mm, hole area accounts for 30% of the total area, hole is irregular shape, smallest cell dimension is 0.05mm, porous face is fitted on steel plate, cohesive strength is 5.8N/25mm, after 150 DEG C of heating 3min, porous membrane layer may be expanded to 20 times of original thickness, double faced adhesive tape is from Automatic-falling steel plate, without obvious cull on steel plate.
embodiment 2
The easy stripping tape that the present embodiment relates to comprises release film successively, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer, wherein polymer-based rete is PVC film layer, the pressure-sensitive adhesive layer of PVC film layer both sides is different, the cohesive strength of porous membrane layer side is had more to strengthen (adherend is glass), porous membrane layer is the EVA film layer containing 10% thermic inflatable elastomeric particulate, thickness is 0.01mm, hole area accounts for 70% of the total area, hole is the circular hole of diameter 0.05mm, porous face is fitted on glass, cohesive strength is 12.1N/25mm, after 100 DEG C of heating 5min, porous membrane layer may be expanded to 2 times of original thickness, cohesive strength is 3.5N/25mm, after coming unstuck on glass without obvious cull.
embodiment 3
The easy stripping tape that the present embodiment relates to comprises release film successively, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer, wherein polymer-based rete is PET film layer, the pressure-sensitive adhesive layer of PET film layer both sides is different, there is the cohesive strength of porous membrane layer side more weak (adherend is glass), porous membrane layer is the EVA film layer containing 8% thermic inflatable elastomeric particulate, thickness is 0.005mm, hole area accounts for 10% of the total area, the unordered circular hole of to be minimum diameter be in hole 0.001mm, largest hole diameter is 0.2mm, porous face is fitted on glass, cohesive strength is 3.9N/25mm, after 90 DEG C of heating 15min, porous membrane layer may be expanded to 1.5 times of original thickness, cohesive strength is 2.1N/25mm, after coming unstuck on glass without obvious cull.
embodiment 4
The easy stripping tape that the present embodiment relates to comprises release film successively, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer, wherein polymer-based rete is PET film layer, the pressure-sensitive adhesive layer of PET film layer both sides is identical, porous membrane layer is the blended rete of EVA and HDPE containing 45% thermic inflatable elastomeric particulate, thickness is 0.5mm, hole area accounts for 20% of the total area, the circular hole of to be diameter be in hole 1mm, porous face is fitted on glass, cohesive strength is 3.3N/25mm, after 180 DEG C of heating 5min, porous membrane layer may be expanded to 5 times of original thickness, glue is from Automatic-falling glass, after coming unstuck on glass without obvious cull.
embodiment 5
The easy stripping tape that the present embodiment relates to comprises release film successively, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer, wherein polymer-based rete is PC rete, the pressure-sensitive adhesive layer of PC rete both sides is identical, porous membrane layer is the HDPE rete containing 1% thermic inflatable elastomeric particulate, thickness is 0.05mm, hole area accounts for 40% of the total area, the square of to be the length of side be in hole 0.1mm, porous face is fitted on PET, cohesive strength is 7.2N/25mm, after 130 DEG C of heating 5min, porous membrane layer may be expanded to 1.1 times of original thickness, cohesive strength is 2.8N/25mm, after coming unstuck on glass without obvious cull.
embodiment 6
The easy stripping tape that the present embodiment relates to comprises release film successively, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer, wherein polymer-based rete is PET film layer, the pressure-sensitive adhesive layer of PET film layer both sides is identical, porous membrane layer is the HDPE rete containing 10% thermic inflatable elastomeric particulate, thickness is 0.03mm, hole area accounts for 90% of the total area, the square of to be the length of side be in hole 0.1mm, porous face is fitted on PET, cohesive strength is 15.5N/25mm, after 130 DEG C of heating 5min, porous membrane layer may be expanded to 2 times of original thickness, cohesive strength is 2.6N/25mm, after coming unstuck on PET without obvious cull.
embodiment 7
The easy stripping tape that the present embodiment relates to comprises release film successively, porous membrane layer, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer, as shown in Figure 2, wherein polymer-based rete is PET film layer, the pressure-sensitive adhesive layer of PET film layer both sides is identical, porous membrane layer is also identical, porous membrane layer is the HDPE rete containing 10% thermic inflatable elastomeric particulate, thickness is 0.03mm, hole area accounts for 90% of the total area, the square of to be the length of side be in hole 0.1mm, all fit adhesive tape both sides PET, cohesive strength is respectively 15.5N/25mm, 15.6N/25mm, after 130 DEG C of heating 5min, porous membrane layer may be expanded to 2 times of original thickness, cohesive strength is 2.6N/25mm, 2.6N/25mm, after coming unstuck on PET without obvious cull, both sides peeling effect is basically identical.
embodiment 8
The easy stripping tape that the present embodiment relates to comprises release film successively, porous membrane layer, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer, wherein polymer-based rete is PET film layer, the pressure-sensitive adhesive layer of PET film layer both sides is identical, porous membrane layer is not identical, the expansion temperature of A side porous membrane layer is 90 DEG C, porous membrane layer is LDPE and the LLDPE intermingling material rete containing 15% thermic inflatable elastomeric particulate, thickness is 0.01mm, hole area accounts for 70% of the total area, the square of to be the length of side be in hole 0.1mm, the expansion temperature of B side porous membrane layer is 180 DEG C, porous membrane layer is LDPE and the LLDPE intermingling material rete containing 10% thermic inflatable elastomeric particulate, thickness is 0.01mm, hole area accounts for 80% of the total area, the diameter in hole is 0.3mm, all fit adhesive tape both sides PET, A side cohesive strength is 13.4N/25mm, B side cohesive strength is 14.3N/25mm, after 95 DEG C of heating 5min, A side porous membrane layer expand into 2.3 times of original thickness, cohesive strength is 3.9N/25mm, after coming unstuck on PET without obvious cull, B side porous membrane layer does not expand, cohesive strength still reaches 13.6N/25mm.
embodiment 9
The easy stripping tape that the present embodiment relates to comprises release film successively, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer, wherein polymer-based rete is PC rete, the pressure-sensitive adhesive layer of PC rete both sides is identical, porous membrane layer is the EVA film layer containing 30% thermic inflatable elastomeric particulate, thickness is 0.01mm, hole area accounts for 90% of the total area, the square of to be the length of side be in hole 0.1mm, porous face is fitted on PET, cohesive strength is 19.2N/25mm, after 85 DEG C of heating 10min, porous membrane layer may be expanded to 2.5 times of original thickness, cohesive strength is 4.3N/25mm, after coming unstuck on glass without obvious cull.
embodiment 10
The easy stripping tape that the present embodiment relates to comprises release film successively, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer, wherein polymer-based rete is PC rete, the pressure-sensitive adhesive layer of PC rete both sides is identical, porous membrane layer is for containing 30% thermic inflatable elastomeric particulate, the EVA film layer of 30% calcium carbonate, thickness is 0.01mm, hole area accounts for 90% of the total area, the square of to be the length of side be in hole 0.1mm, porous face is fitted on PET, cohesive strength is 19.1N/25mm, after 85 DEG C of heating 10min, porous membrane layer may be expanded to 2.1 times of original thickness, cohesive strength is 4.8N/25mm, after coming unstuck on glass without obvious cull.
embodiment 11
The easy stripping tape that the present embodiment relates to comprises release film successively, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer, wherein polymer-based rete is PC rete, the pressure-sensitive adhesive layer of PC rete both sides is identical, porous membrane layer is the HDPE rete containing 10% thermic inflatable elastomeric particulate, thickness is 0.05mm, hole area accounts for 40% of the total area, the square of to be the length of side be in hole 0.1mm, porous face is fitted on PET, cohesive strength is 7.2N/25mm, after 130 DEG C of heating 5min, porous membrane layer may be expanded to 1.5 times of original thickness, cohesive strength is 2.2N/25mm, after coming unstuck on glass without obvious cull.
embodiment 12
The easy stripping tape that the present embodiment relates to comprises release film successively, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, porous membrane layer, release film layer, wherein polymer-based rete is PET film layer, the pressure-sensitive adhesive layer of PET film layer both sides is identical, porous membrane layer is the HDPE rete containing 10% thermic inflatable elastomeric particulate, thickness is 0.03mm, hole area accounts for 60% of the total area, the square of to be the length of side be in hole 0.1mm, porous face is fitted on PET, cohesive strength is 11.1N/25mm, after 130 DEG C of heating 5min, porous membrane layer may be expanded to 2 times of original thickness, cohesive strength is 2.3N/25mm, after coming unstuck on PET without obvious cull.
comparative example 1
The adhesive tape that this comparative example relates to comprises release film, pressure-sensitive adhesive layer, polymer-based rete, pressure-sensitive adhesive layer, release film layer successively, wherein polymer-based rete is PC rete, the pressure-sensitive adhesive layer of PC rete both sides is identical, use all consistent with embodiment 9 of material, fitted to by pressure sensitive adhesive on PET, cohesive strength is 21.3N/25mm, and after 85 DEG C of heating 10min, bondline thickness is substantially unchanged, cohesive strength is 19.8N/25mm, and adhesive tape cannot be taken off from PET.
By the contrast of comparative example 1 with embodiment 9, illustrate that the existence of expanded porous rete obviously declines to the cohesive strength of bonding substrates after adhesive tape can be made to heat, thus play the effect easily peeled off.
In this patent, bond strength testing method is as follows:
By sample at 23 DEG C ± 2 DEG C, 2h is placed under the condition of relative humidity 65% ± 5%, use electronic universal tester (Shimadzu Instrument Ltd.), peel off with the direction of delaminate of the speed of 300mm/min along 180 °, the data obtained is as cohesive strength.
Claims (10)
1. the easy stripping tape that expands, it is characterized in that this adhesive tape comprises release film (101), pressure-sensitive adhesive layer (103), polymer-based rete (104), pressure-sensitive adhesive layer (103), porous membrane layer (102), release film layer (101) successively, wherein porous membrane layer is the rete of heat expandable.
2. the easy stripping tape that expands, it is characterized in that this adhesive tape comprises release film (101), porous membrane layer (102), pressure-sensitive adhesive layer (103), polymer-based rete (104), pressure-sensitive adhesive layer (103), porous membrane layer (102), release film layer (101) successively, wherein porous membrane layer is the rete of heat expandable.
3. the easy stripping tape of one expansion according to claim 1 and 2, is characterized in that described porous membrane layer comprises the macromolecular material being no less than 70% quality.
4. the easy stripping tape of one expansion according to claim 1 and 2, is characterized in that described porous membrane layer comprises the thermic inflatable elastomeric particulate of 10-45% quality.
5. the easy stripping tape of one expansion according to claim 1 and 2, is characterized in that described porous membrane layer thickness is 0.005-0.5mm.
6. the easy stripping tape of one expansion according to claim 5, after it is characterized in that the rete heating of described heat expandable, size may expand to full-sized 1.1-20 doubly.
7. the easy stripping tape of one expansion according to claim 1 and 2, is characterized in that described porous membrane layer expansion Heating temperature is 90-180 DEG C.
8. the easy stripping tape of one expansion according to claim 1 and 2, is characterized in that the ratio of described porous membrane layer hole area accounts for the 10-90% of the total area.
9. the easy stripping tape of one expansion according to claim 1 and 2, is characterized in that the ratio of described porous membrane layer hole area accounts for the 30-70% of the total area.
10. the easy stripping tape of one expansion according to claim 1 and 2, is characterized in that described porous membrane layer hole dimension is at 0.001-1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243009.5A CN104031571B (en) | 2014-05-17 | 2014-05-17 | A kind of easy stripping tape that expands |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243009.5A CN104031571B (en) | 2014-05-17 | 2014-05-17 | A kind of easy stripping tape that expands |
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| Publication Number | Publication Date |
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| CN104031571A CN104031571A (en) | 2014-09-10 |
| CN104031571B true CN104031571B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410243009.5A Active CN104031571B (en) | 2014-05-17 | 2014-05-17 | A kind of easy stripping tape that expands |
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| CN (1) | CN104031571B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104830245B (en) * | 2015-05-18 | 2017-05-03 | 江苏五信新材料科技股份有限公司 | Waterproof paster expanding at high temperature |
| CN106497446B (en) * | 2016-11-09 | 2022-06-10 | 宁波启合新材料科技有限公司 | Preparation method of adhesive tape |
| CN107325744A (en) * | 2017-07-28 | 2017-11-07 | 宁波启合新材料科技有限公司 | A kind of high temperature resistant stretch release adhesive tape and its manufacture method |
| CN109449080B (en) | 2018-11-12 | 2021-01-26 | 京东方科技集团股份有限公司 | Adhesive film, preparation method thereof, display device and removing method of adhesive film |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1184835A (en) * | 1996-10-30 | 1998-06-17 | 力克达因株式会社 | Permeable adhesive tape and process for preparing same |
| CN102077688A (en) * | 2008-07-08 | 2011-05-25 | 日东电工株式会社 | Process for producing organic electroluminescent panel |
| CN103360964A (en) * | 2012-03-27 | 2013-10-23 | 日东电工株式会社 | Heat-peelable pressure-sensitive adhesive sheet |
-
2014
- 2014-05-17 CN CN201410243009.5A patent/CN104031571B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1184835A (en) * | 1996-10-30 | 1998-06-17 | 力克达因株式会社 | Permeable adhesive tape and process for preparing same |
| CN102077688A (en) * | 2008-07-08 | 2011-05-25 | 日东电工株式会社 | Process for producing organic electroluminescent panel |
| CN103360964A (en) * | 2012-03-27 | 2013-10-23 | 日东电工株式会社 | Heat-peelable pressure-sensitive adhesive sheet |
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| CN104031571A (en) | 2014-09-10 |
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Effective date of registration: 20190821 Address after: 526000 Jinli Town, Gaoyao District, Zhaoqing City, Guangdong Province Patentee after: Zhaoqing Gaoyao District Jianmei Viscose Products Co., Ltd. Address before: 314300 No. 301, North West Road, Wuyuan Town, Haiyan County, Jiaxing City, Zhejiang Province Patentee before: Gan Chunli |