CN101649169A - Water sensitivity pressure-sensitive adhesive for protection paper - Google Patents
Water sensitivity pressure-sensitive adhesive for protection paper Download PDFInfo
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- CN101649169A CN101649169A CN200910042242A CN200910042242A CN101649169A CN 101649169 A CN101649169 A CN 101649169A CN 200910042242 A CN200910042242 A CN 200910042242A CN 200910042242 A CN200910042242 A CN 200910042242A CN 101649169 A CN101649169 A CN 101649169A
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- sensitive adhesive
- pressure sensitive
- water sensitivity
- protection sheet
- sensitivity pressure
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Abstract
The invention discloses a water sensitivity pressure-sensitive adhesive for protection paper, containing the following components by weight percent: 80-93% of polyvinyl acetal, 0.5-5% of solidifying agent, 5-15% of thickening agent and 1-5% of viscosity regulator. The water sensitivity pressure-sensitive adhesive disclosed by the invention can realize favourable balance of initial adhesion, peeling strength and cohesion and is applied to protection paper, so that the protection paper is easy to paste and tear, can be clearly peeled even being pasted on base material for a long time and no pressure-sensitive adhesive residual is remained.
Description
Technical field
The present invention relates to a kind of water sensitivity pressure sensitive adhesive, more particularly, the present invention relates to a kind of protection sheet water sensitivity pressure sensitive adhesive.
Background technology
Protection sheet is a kind of surface protection, wrapping material that are used to protect the commodity surface; it is attached to the surface of commodity such as PMMA sheet material, ABS sheet material, PVC optic panel material, polyester furniture sheet material, trimeric cyanamide sheet material; make it in manufacturing, transportation, secondary processing, storage and use, protect the surface, avoid commodity to be polluted, scratch and slow down the oxidation on commodity surface.The application of protection sheet, not only can improve product visual appearance, make things convenient for materials processing, also can improve simultaneously the utilization ratio of material, reduce production costs.
Protection sheet pressure-sensitive adhesive coating on paper base material is made, and the water sensitivity protection sheet is one of them special kinds, coating water sensitivity pressure sensitive adhesive and making on paper base material.The water sensitivity pressure sensitive adhesive has bigger bonding strength under moistening condition, and dried bonding strength is less, thus the viscous force when protection sheet is used through the time change for a short time, compare and exempt from the easy subsides of water conservation paper and easily tear.But the water sensitivity pressure sensitive adhesive that uses is single polyvinyl acetal at present, exists dry back bonding strength low excessively, shortcomings such as the long-time easy cull of pasting board.
Summary of the invention
The object of the present invention is to provide a kind of protection sheet water sensitivity pressure sensitive adhesive.This water sensitivity pressure sensitive adhesive can be realized the well balanced of initial bonding strength, stripping strength and force of cohesion, is applied to make it in the protection sheet easy subsides and easily tears, and be attached to for a long time on the base material and still can peel off neatly, and it is residual not have pressure sensitive adhesive.
The objective of the invention is to be achieved through the following technical solutions:
A kind of protection sheet water sensitivity pressure sensitive adhesive comprises following component by weight percentage:
Polyvinyl acetal 80-93%;
Solidifying agent 0.5-5%;
Tackifier 5-15%;
Viscosity modifier 1-5%.
The aldehyde radical of described polyvinyl acetal is selected from one or more the mixing in formaldehyde, acetaldehyde, butyraldehyde-n, isobutyric aldehyde and the furfural; Degree of acetalization is 15-65% (molar percentage).
Described solidifying agent is multifunctional water-based isocyanate.
Described tackifier are Gum Rosin or terpine resin.
Described viscosity modifier is an associative thickener, can select hydrophobically modified oxyethane block polymers of polyurethane (HEUR) or hydrophobically-modified alkali soluble acrylic (HASE) for use.
In water sensitivity pressure sensitive adhesive of the present invention, selected solidifying agent can improve the cohesive strength of pressure sensitive adhesive significantly, guarantees that protection sheet is attached to for a long time still can totally peel off on the base material and cull not; The consumption of solidifying agent is moderate, has on the one hand avoided hardener dose very little, cause pressure sensitive adhesive to hold viscous force too poor, cull has also avoided hardener dose too big on the other hand easily, causes the wettability of pressure sensitive adhesive and initial bonding strength undesirable, stripping strength is low.In addition, selected tackifier can improve the bonding strength of pressure sensitive adhesive significantly, especially dried bonding strength; The consumption of tackifier is moderate, has on the one hand avoided the tackifier consumption very little, causes the stripping strength of pressure sensitive adhesive too low, has also avoided the tackifier consumption too big on the other hand, cause pressure sensitive adhesive to hold viscous force too poor, cull easily.And selected viscosity modifier is used to increase the viscosity of pressure sensitive adhesive glue, glue infiltrate paper base material when preventing to be coated with.
Water sensitivity pressure sensitive adhesive of the present invention can be realized the well balanced of initial bonding strength, stripping strength and force of cohesion, is applied to make it in the protection sheet easy subsides and easily tears, and be attached to for a long time on the base material and still can peel off neatly, and it is residual not have pressure sensitive adhesive.The key technical indexes that it reached is as follows: tack (test immediately behind the wet water): 〉=No. 5 balls; 180 ° of stripping strengths (80 ℃ of tests after dry 30 minutes down):＞30N/m; Hold viscosity (under 25 ℃):＞72h does not come off.With adopting the protection sheet of water sensitivity pressure sensitive adhesive preparation of the present invention to be attached to the PMMA substrate surface, to place under the room temperature when tearing this protection sheet off after 6 months, no pressure sensitive adhesive remains in substrate surface.
Embodiment
Embodiment one:
Take by weighing 25g polyvinyl formal, 60g polyvinyl alcohol furfural, the multifunctional water-based isocyanate of 2g, 10g Gum Rosin and 3g HEUR respectively.At room temperature above-mentioned each component is mixed, stirred, promptly make water sensitivity pressure sensitive adhesive glue of the present invention.
Prepared water sensitivity pressure sensitive adhesive glue is evenly coated on the kraft paper, and spread is about 15g/m
2(dried glue), drying is 10 minutes under 80 ℃, every performance technologies index of testing pressure sensitive adhesive according to following testing method:
Tack: the spin slope according to GB 4852-1984 stops method (DOW method), will test with Pressuresensitive Tape initial cohesiveness tester immediately behind the wet water of protection sheet;
180 ° of stripping strengths: will be attached on the mirror steel plate behind the wet water of protection sheet, and after under 80 ℃ dry 30 minutes, use the desktop tension testing machine to test according to GB/T2792-1998;
Hold viscosity: will be attached on the test panel behind the wet water of protection sheet, and after under 80 ℃ dry 30 minutes, use adhesive tape confining force trier to test according to GB/T 4851-1988.
The test result of every performance technologies index is as follows:
Tack: No. 7 balls;
180 ° of stripping strength: 37N/m;
Hold viscosity:＞72h.
With adopting the protection sheet of the prepared water sensitivity pressure sensitive adhesive preparation of present embodiment to be attached to the PMMA substrate surface, to place under the room temperature when tearing this protection sheet off after 6 months, no pressure sensitive adhesive remains in substrate surface.
Embodiment two:
Take by weighing 20g polyvinylacetal, 63g polyvinyl alcohol contract butyraldehyde-n, the multifunctional water-based isocyanate of 3g, 10g Gum Rosin and 4g HASE respectively.At room temperature above-mentioned each component is mixed, stirred, promptly make water sensitivity pressure sensitive adhesive glue of the present invention.
Prepared water sensitivity pressure sensitive adhesive glue is evenly coated on the kraft paper, and spread is about 15g/m
2(dried glue), drying is 10 minutes under 80 ℃, according to every performance technologies index of embodiment one described testing method test pressure sensitive adhesive.Test result is as follows:
Tack: No. 5 balls;
180 ° of stripping strength: 33N/m;
Hold viscosity:＞72h.
With adopting the protection sheet of the prepared water sensitivity pressure sensitive adhesive preparation of present embodiment to be attached to the PMMA substrate surface, to place under the room temperature when tearing this protection sheet off after 6 months, no pressure sensitive adhesive remains in substrate surface.
Embodiment three:
Take by weighing 23g polyvinyl alcohol contract isobutyric aldehyde, 68g polyvinyl alcohol furfural, the multifunctional water-based isocyanate of 1g, 6g terpine resin and 2g HEUR respectively.At room temperature above-mentioned each component is mixed, stirred, promptly make water sensitivity pressure sensitive adhesive glue of the present invention.
Prepared water sensitivity pressure sensitive adhesive glue is evenly coated on the kraft paper, and spread is about 15g/m
2(dried glue), drying is 10 minutes under 80 ℃, according to every performance technologies index of embodiment one described testing method test pressure sensitive adhesive.Test result is as follows:
Tack: No. 7 balls;
180 ° of stripping strength: 49N/m;
Hold viscosity:＞72h.
With adopting the protection sheet of the prepared water sensitivity pressure sensitive adhesive preparation of present embodiment to be attached to the PMMA substrate surface, to place under the room temperature when tearing this protection sheet off after 6 months, no pressure sensitive adhesive remains in substrate surface.
Claims (7)
1, a kind of protection sheet water sensitivity pressure sensitive adhesive comprises following component by weight percentage:
Polyvinyl acetal 80-93%;
Solidifying agent 0.5-5%;
Tackifier 5-15%;
Viscosity modifier 1-5%.
2, protection sheet according to claim 1 water sensitivity pressure sensitive adhesive is characterized in that: the aldehyde radical of described polyvinyl acetal is selected from one or more the mixing in formaldehyde, acetaldehyde, butyraldehyde-n, isobutyric aldehyde and the furfural.
3, protection sheet according to claim 1 water sensitivity pressure sensitive adhesive is characterized in that: the degree of acetalization of described polyvinyl acetal is 15-65% (molar percentage).
4, protection sheet according to claim 1 water sensitivity pressure sensitive adhesive is characterized in that: described solidifying agent is multifunctional water-based isocyanate.
5, protection sheet according to claim 1 water sensitivity pressure sensitive adhesive is characterized in that: described tackifier are Gum Rosin or terpine resin.
6, protection sheet according to claim 1 water sensitivity pressure sensitive adhesive is characterized in that: described viscosity modifier is an associative thickener.
7, protection sheet according to claim 6 water sensitivity pressure sensitive adhesive is characterized in that: described viscosity modifier is hydrophobically modified oxyethane block polymers of polyurethane or hydrophobically-modified alkali soluble acrylic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910042242 CN101649169B (en) | 2009-08-31 | 2009-08-31 | Water sensitivity pressure-sensitive adhesive for protection paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910042242 CN101649169B (en) | 2009-08-31 | 2009-08-31 | Water sensitivity pressure-sensitive adhesive for protection paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101649169A true CN101649169A (en) | 2010-02-17 |
| CN101649169B CN101649169B (en) | 2012-12-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910042242 Active CN101649169B (en) | 2009-08-31 | 2009-08-31 | Water sensitivity pressure-sensitive adhesive for protection paper |
Country Status (1)
| Country | Link |
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| CN (1) | CN101649169B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3526270A1 (en) * | 1985-07-23 | 1987-02-05 | Herberts Gmbh | HEAT-CURABLE ADHESIVE FILM |
| DE102004057651A1 (en) * | 2004-11-29 | 2006-06-01 | Tesa Ag | Heat-activable adhesive tape for producing and reprocessing flexible printed circuit board and bonding to polyimide, is based on composition containing acrylonitrile-butadiene copolymer, polyvinyl acetal, epoxide resin and hardener |
| CN100572480C (en) * | 2005-12-31 | 2009-12-23 | 广东达美胶粘制品有限公司 | A kind of have water-sensitive characteristic pressure sensitive adhesive and a manufacture method thereof |
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2009
- 2009-08-31 CN CN 200910042242 patent/CN101649169B/en active Active
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| Publication number | Publication date |
|---|---|
| CN101649169B (en) | 2012-12-12 |
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Effective date of registration: 20160204 Address after: Qingfeng town, Gangbei District, Guigang City in the Guangxi Zhuang Autonomous Region Tan Village 537100 Tallowtree Tun No. 144-1 Patentee after: Huang Dongjiu Address before: 528325 Guangdong province Foshan City Xingtan town industrial zone Shunde Qi Road No. 266 Patentee before: Guangdong Tamay New Materials Co., Ltd. |
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Effective date of registration: 20170329 Address after: 519000 Guangdong city of Zhuhai province Hengqin Baohua Road No. 6, room 105 -1866 Patentee after: Zhuhai Hongyuan Management Consulting Co. Ltd. Address before: Qingfeng town of Guangxi Province in 537100 Gangbei District, Guigang City, Qin Tun Village Tallowtree No. 144-1 Patentee before: Huang Dongjiu |
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Effective date of registration: 20170612 Address after: 214181 Jiangsu Province, Wuxi Huishan industrial agglomeration area north road transformation Patentee after: Wuxi Delta new material Co., Ltd. Address before: 519000 Guangdong city of Zhuhai province Hengqin Baohua Road No. 6, room 105 -1866 Patentee before: Zhuhai Hongyuan Management Consulting Co. Ltd. |
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