CN101649169B - Water sensitivity pressure-sensitive adhesive for protection paper - Google Patents
Water sensitivity pressure-sensitive adhesive for protection paper Download PDFInfo
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- CN101649169B CN101649169B CN 200910042242 CN200910042242A CN101649169B CN 101649169 B CN101649169 B CN 101649169B CN 200910042242 CN200910042242 CN 200910042242 CN 200910042242 A CN200910042242 A CN 200910042242A CN 101649169 B CN101649169 B CN 101649169B
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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 and use the 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 receive pollution, 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 processed, 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 processing 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 water conservation paper and be prone to paste and be prone to tear.But the water sensitivity pressure sensitive adhesive that uses at present is single polyvinyl acetal, exists dry back bonding strength low excessively, and long-time pasting board is prone to shortcomings such as cull.
Summary of the invention
The object of the present invention is to provide a kind of protection sheet to use the 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 be prone to paste be prone to tear, 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 realize through following technical scheme:
A kind of protection sheet is used the 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, the solidifying agent of being selected for use 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, the tackifier of being selected for use 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 the viscosity modifier of being selected for use 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 be prone to paste be prone to tear, 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 following: 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.The protection sheet that adopts water sensitivity pressure sensitive adhesive preparation of the present invention is attached to the PMMA substrate surface, and when the room temperature held tore this protection sheet off after 6 months, no pressure sensitive adhesive remained in substrate surface.
Embodiment
Embodiment one:
Take by weighing 25g PVF, 60g Z 150PH 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 ℃, each item 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), with testing with Pressuresensitive Tape initial cohesiveness tester immediately behind the wet water of protection sheet;
180 ° of stripping strengths:, after under 80 ℃ dry 30 minutes, use the desktop tension testing machine to test according to GB/T2792-1998 with being attached on the mirror steel plate behind the wet water of protection sheet;
Hold viscosity:, after under 80 ℃ dry 30 minutes, use adhesive tape confining force trier to test according to GB/T 4851-1988 with being attached on the test panel behind the wet water of protection sheet.
The test result of each item performance technologies index is following:
Tack: No. 7 balls;
180 ° of stripping strength: 37N/m;
Hold viscosity:＞72h.
The protection sheet that adopts the prepared water sensitivity pressure sensitive adhesive preparation of present embodiment is attached to the PMMA substrate surface, and when the room temperature held tore this protection sheet off after 6 months, no pressure sensitive adhesive remained in substrate surface.
Embodiment two:
Take by weighing 20g polyvinylacetal, 63g Z 150PH 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 each item performance technologies index of embodiment one described testing method test pressure sensitive adhesive.Test result is following:
Tack: No. 5 balls;
180 ° of stripping strength: 33N/m;
Hold viscosity:＞72h.
The protection sheet that adopts the prepared water sensitivity pressure sensitive adhesive preparation of present embodiment is attached to the PMMA substrate surface, and when the room temperature held tore this protection sheet off after 6 months, no pressure sensitive adhesive remained in substrate surface.
Embodiment three:
Take by weighing 23g Z 150PH contract isobutyric aldehyde, 68g Z 150PH 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 each item performance technologies index of embodiment one described testing method test pressure sensitive adhesive.Test result is following:
Tack: No. 7 balls;
180 ° of stripping strength: 49N/m;
Hold viscosity:＞72h.
The protection sheet that adopts the prepared water sensitivity pressure sensitive adhesive preparation of present embodiment is attached to the PMMA substrate surface, and when the room temperature held tore this protection sheet off after 6 months, no pressure sensitive adhesive remained in substrate surface.
Claims (5)
1. a protection sheet is used the water sensitivity pressure sensitive adhesive, comprises following component by weight percentage:
Polyvinyl acetal 80-93%;
Solidifying agent 0.5-5%;
Tackifier 5-15%;
Associative thickener 1-5%;
Wherein, described solidifying agent is multifunctional water-based isocyanate.
2. protection sheet according to claim 1 is used the water sensitivity pressure sensitive adhesive, it 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 is used the water sensitivity pressure sensitive adhesive, it is characterized in that: by the mole percentage calculation, the degree of acetalization of described polyvinyl acetal is 15-65%.
4. protection sheet according to claim 1 is used the water sensitivity pressure sensitive adhesive, it is characterized in that: described tackifier are Gum Rosin or terpine resin.
5. protection sheet according to claim 1 is used the water sensitivity pressure sensitive adhesive, it is characterized in that: described associative thickener 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 CN101649169A (en) | 2010-02-17 |
| CN101649169B true CN101649169B (en) | 2012-12-12 |
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| 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 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105150A (en) * | 1985-07-23 | 1987-02-04 | 黑尔伯有限公司 | Hot setting binding film |
| CN1990804A (en) * | 2005-12-31 | 2007-07-04 | 佛山市顺德区达美胶粘制品有限公司 | Pressure-sensitive adhesive with water sensitivity and preparation method thereof |
| CN101065460A (en) * | 2004-11-29 | 2007-10-31 | 蒂萨股份公司 | Adhesive strip that can be activated by heat and is based on nitrile rubber and polyvinyl butyral for sticking together electronic components and strip conductors |
-
2009
- 2009-08-31 CN CN 200910042242 patent/CN101649169B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105150A (en) * | 1985-07-23 | 1987-02-04 | 黑尔伯有限公司 | Hot setting binding film |
| CN101065460A (en) * | 2004-11-29 | 2007-10-31 | 蒂萨股份公司 | Adhesive strip that can be activated by heat and is based on nitrile rubber and polyvinyl butyral for sticking together electronic components and strip conductors |
| CN1990804A (en) * | 2005-12-31 | 2007-07-04 | 佛山市顺德区达美胶粘制品有限公司 | Pressure-sensitive adhesive with water sensitivity and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN101649169A (en) | 2010-02-17 |
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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. |