CN102797195B - Method for reducing organosilicon transfer of release paper - Google Patents
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- CN102797195B CN102797195B CN201210277014.9A CN201210277014A CN102797195B CN 102797195 B CN102797195 B CN 102797195B CN 201210277014 A CN201210277014 A CN 201210277014A CN 102797195 B CN102797195 B CN 102797195B
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000012546 transfer Methods 0.000 title abstract description 28
- 238000005096 rolling process Methods 0.000 claims abstract description 89
- 229920002545 silicone oil Polymers 0.000 claims abstract description 45
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 39
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 30
- 229920000297 Rayon Polymers 0.000 claims abstract description 24
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 19
- 239000003292 glue Substances 0.000 claims abstract description 14
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 6
- 125000000753 cycloalkyl group Chemical group 0.000 claims abstract description 6
- 125000004185 ester group Chemical group 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 20
- -1 carbomethoxy, ethoxycarbonyl Chemical group 0.000 claims description 16
- 230000033228 biological regulation Effects 0.000 claims description 9
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 7
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- LVZWSLJZHVFIQJ-UHFFFAOYSA-N Cyclopropane Chemical compound C1CC1 LVZWSLJZHVFIQJ-UHFFFAOYSA-N 0.000 claims description 3
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- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 3
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- 125000000590 4-methylphenyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 claims description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 2
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 2
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 2
- 229910052799 carbon Inorganic materials 0.000 claims 2
- 125000005396 acrylic acid ester group Chemical group 0.000 claims 1
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 claims 1
- 238000002386 leaching Methods 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 claims 1
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 34
- 230000001070 adhesive effect Effects 0.000 abstract description 31
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 abstract description 22
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052710 silicon Inorganic materials 0.000 abstract description 12
- 239000010703 silicon Substances 0.000 abstract description 12
- 125000003118 aryl group Chemical group 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
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- 239000012535 impurity Substances 0.000 abstract 1
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- 230000007547 defect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 3
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 3
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical group [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 3
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
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- 239000003522 acrylic cement Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
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- 230000003796 beauty Effects 0.000 description 1
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- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 239000000178 monomer Substances 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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Landscapes
- Adhesive Tapes (AREA)
Abstract
本发明涉及一种减少离型纸有机硅转移的方法，在离型纸涂布压敏胶前通过采用粘胶对离型纸的离型层进行碾压处理来实现的。粘胶为非极性基团接枝丙烯酸酯压敏胶，其分子结构通式为：其中n为3~20，R1和R2中至少有一个为环烷基或烷氧基，其余为H，R3为短链烷基、长链烷基或芳香基，X为酯基基团，粘胶的初粘力为2.0~5.0N/mm，离型纸的离型层为有机硅离型层；碾压的压力为100~500N。通过这种方法处理的离型纸的离型层表面的杂质和未固化硅油量少，与粘胶贴合后，硅转移量少，粘胶的粘性降低小，从而使粘胶具有较高的粘结性保留率，且工艺简单，方便操作，可广泛用于离型纸、粘结剂应用领域。The invention relates to a method for reducing the silicone transfer of release paper, which is realized by rolling the release layer of the release paper with glue before the release paper is coated with pressure-sensitive adhesive. The adhesive is a non-polar group grafted acrylate pressure-sensitive adhesive, and its general molecular structure formula is: Where n is 3~20, at least one of R1 and R2 is a cycloalkyl or alkoxy group, the rest is H, R3 is a short-chain alkyl, long-chain alkyl or aryl group, X is an ester group The initial adhesion of the viscose is 2.0~5.0N/mm, and the release layer of the release paper is a silicone release layer; the rolling pressure is 100~500N. The amount of impurities and uncured silicone oil on the surface of the release layer of the release paper treated by this method is small, and after bonding with the adhesive, the amount of silicon transfer is small, and the viscosity of the adhesive is reduced, so that the adhesive has a higher The adhesive retention rate is high, and the process is simple and easy to operate, and can be widely used in the application fields of release paper and adhesive.
Description
技术领域 technical field
本发明涉及一种减少离型纸有机硅转移的方法，特别涉及一种通过离型纸的离型层处理的方法实现减少离型纸有机硅转移的方法。The invention relates to a method for reducing the transfer of silicone from release paper, in particular to a method for reducing the transfer of silicone from release paper by treating the release layer of the release paper.
背景技术 Background technique
有机硅离型纸又称隔离纸(release paper)，已有四十多年的历史。八十年代以来，我国压敏胶制品与自粘材料有大幅度迅猛发展，伴随上述工业的发展，离型纸制造工业亦有很大的发展，诸如生产不干胶商标原纸、双面胶带、泡棉胶带、各种鞋面材料自粘贴合等多种厂家都需要离型纸配套。Silicone release paper, also known as release paper, has a history of more than 40 years. Since the 1980s, my country's pressure-sensitive adhesive products and self-adhesive materials have developed rapidly. With the development of the above-mentioned industries, the release paper manufacturing industry has also developed greatly, such as the production of self-adhesive trademark base paper, double-sided tape, Various manufacturers such as foam tape and self-adhesive bonding of various shoe upper materials need release paper.
有机硅离型纸中的主要成分：固化改性有机硅，其表面张力很低且隔离效果良好，工业上一般采用在原纸上涂覆一层聚乙烯(PE)膜，再将有机硅涂料喷涂在这一层PE膜上，形成有机硅膜，各组分改性有机硅油在一定条件下进行适当的交联，控制交联密度与交联点之间的分子量，可以在一定范围内调节有机硅涂层的剥离力，从而制得各种剥离力的离型纸，以适应不同产品的诸多要求。The main component of silicone release paper: cured modified silicone, its surface tension is very low and its isolation effect is good. In industry, it is generally used to coat a layer of polyethylene (PE) film on the base paper, and then spray the silicone coating On this layer of PE film, an organic silicon film is formed, and the modified silicone oil of each component is properly cross-linked under certain conditions, and the molecular weight between the cross-linking density and the cross-linking point can be controlled to adjust the organic The peeling force of the silicon coating can be used to produce release papers with various peeling forces to meet the many requirements of different products.
然而，在大量的实际应用过程中发现，当离型纸的硅面与粘胶贴和后，在再剥离离型纸时，离型纸的硅面的小分子硅油会转移到胶上且硅转移量较多，粘胶的粘性就大为降低，甚至已降低到其原有粘结力的50~60%，从而影响了其实际应用，如在作为不干胶商标原纸上，这种商标纸粘结力的降低会造成商标纸起泡、脱落，从而影响制品的美观及实用性。分析这种出现粘胶力下降原因是：离型硅油生产涂布工艺的缺陷造成硅层固化未完全，易转移；离型硅油常使用的苯、二甲苯、汽油等溶剂腐蚀部分胶层；常用的离型硅油采用缩合反应有机硅，在反应过程中会产生较多的醇、胺和水等小分子吸附污染胶层等。However, it has been found in a large number of practical applications that after the silicon surface of the release paper is bonded with the adhesive, and when the release paper is peeled off, the small molecule silicone oil on the silicon surface of the release paper will transfer to the glue and the silicon will If the amount of transfer is large, the viscosity of the adhesive will be greatly reduced, even reduced to 50-60% of its original cohesive force, thus affecting its practical application. For example, on the original paper used as a self-adhesive trademark, this trademark The reduction of paper adhesion will cause the label paper to bubble and fall off, thus affecting the beauty and practicability of the product. The reason for the decrease in viscose force is analyzed: the defects in the production and coating process of the release silicone oil cause the silicon layer to be incompletely cured and easy to transfer; solvents such as benzene, xylene, and gasoline commonly used in release silicone oil corrode part of the adhesive layer; The release silicone oil adopts condensation reaction silicone, and more small molecules such as alcohol, amine and water will be produced during the reaction to adsorb and pollute the rubber layer.
公开号CN101050608A公开了一种低转移离型纸及其制造方法中，其主要技术点是在涂布烘干技术中，设置有7段温区的烘箱，最高烘温为150℃~180℃，用这种工艺制备出的离型纸与粘胶贴合后，硅转移量少，粘胶的粘性降低小，从而使粘胶具有较高的粘结性保留率。但该工艺使用温度较高，使得原纸中水脱除后产生收缩造成离型层产生缺陷；同时，该配方体系中存在了大量的甲苯（89.5~97.96%），使得在后期烘干过程中难以完全去除，会造成环境污染以及提高离型纸小分子转移率等问题。现有技术都存在着硅油不可能进行完全配比的固化，残留的硅油组分多及未固化的硅油由于与基材的粘结不牢，因而易于转移到胶层，并且现有技术中未针对这种离型层的未反应硅油的转移提出过有效的方法。Publication number CN101050608A discloses a low-transfer release paper and its manufacturing method. Its main technical point is that in the coating and drying technology, an oven with 7 temperature zones is provided, and the highest drying temperature is 150°C~180°C. After the release paper prepared by this process is laminated with the adhesive, the amount of silicon transfer is small, and the viscosity of the adhesive decreases slightly, so that the adhesive has a higher retention rate of cohesiveness. However, the high temperature used in this process makes the base paper shrink after the water is removed and causes defects in the release layer; at the same time, there is a large amount of toluene (89.5~97.96%) in the formula system, which makes it difficult to dry in the later stage. If it is completely removed, it will cause environmental pollution and increase the transfer rate of small molecules on the release paper. In the prior art, it is impossible for the silicone oil to be cured in a complete proportion. There are many residual silicone oil components and the uncured silicone oil is easy to transfer to the adhesive layer due to the weak bond with the substrate, and there is no such thing in the prior art Effective methods have been proposed for the transfer of unreacted silicone oil in this release layer.
发明内容 Contents of the invention
本发明的目的是这对现有技术的缺陷，提供一种减少离型纸有机硅转移的方法，以克服现有技术中离型纸上硅油易向胶层转移从而造成黏胶粘性的不足。The purpose of the present invention is to provide a method for reducing the silicone transfer of release paper to the defects of the prior art, so as to overcome the lack of adhesiveness caused by the transfer of silicone oil on the release paper to the adhesive layer in the prior art. .
本发明所提供的一种减少离型纸有机硅转移的方法，在离型纸涂布压敏胶前进行离型纸固化硅层去除硅油小分子处理；所述的去硅油处理是采用一种粘胶碾压离型纸涂布面；A method for reducing silicone transfer from release paper provided by the present invention involves curing the silicon layer of the release paper to remove small molecules of silicone oil before coating the pressure-sensitive adhesive on the release paper; Viscose rolled release paper coating surface;
所述的粘胶为非极性基团接枝丙烯酸酯压敏胶，由于固化层未固化完全的硅油的主要成分为聚二甲基硅氧烷(分子量为200~300)，该化合物结构甲基上的三个氢原子由于甲基的旋转占有较大空间，从而增加了相邻硅氧烷分子间的距离，因分子间作用力与分子间距离的六次方成反比，故聚二甲基硅氧烷分子间作用力比碳氢化合物弱很多，其表面张力比碳氢化合物小，为非极性分子，本发明中的丙烯酸酯压敏胶上接枝了非极性基团，一方面利用了丙烯酸酯的粘性，粘结未固化的硅油，另一方面利用相似相容原理，非极性基团接枝丙烯酸酯能够对未固化的硅油起到吸附作用，从而去除硅油；粘胶的初粘力为2.0~5.0N/mm（小于有机硅固化层的剥离强度）；所述的碾压压力为100~500N；The adhesive is a non-polar group grafted acrylate pressure-sensitive adhesive. Since the main component of the uncured silicone oil in the cured layer is polydimethylsiloxane (molecular weight: 200-300), the compound has a structure of The three hydrogen atoms on the group occupy a large space due to the rotation of the methyl group, thereby increasing the distance between adjacent siloxane molecules, because the intermolecular force is inversely proportional to the sixth power of the intermolecular distance, so polydimethylsiloxane The intermolecular force of siloxane-based siloxane is much weaker than that of hydrocarbons, and its surface tension is smaller than that of hydrocarbons. It is a non-polar molecule. The acrylate pressure-sensitive adhesive in the present invention is grafted with non-polar groups. On the one hand, the viscosity of acrylate is used to bond uncured silicone oil; on the other hand, using the principle of similar compatibility, non-polar group grafted acrylate can adsorb uncured silicone oil, thereby removing silicone oil; viscose The initial adhesion force is 2.0~5.0N/mm (less than the peel strength of the silicone cured layer); the rolling pressure is 100~500N;
所述的离型纸的离型层为有机硅离型层。The release layer of the release paper is an organic silicon release layer.
作为优选的技术方案：As a preferred technical solution:
如上所述的方法，所述的非极性基团接枝聚丙烯酸酯的通式为：As mentioned above, the general formula of the non-polar group grafted polyacrylate is:
其中n为3~20，R1和R2中至少有一个为环烷基或烷氧基，其余为H，R3为短链烷基、长链烷基或芳香基，X为酯基基团；所述粘胶的初粘力为2.0~5.0N/mm；碾压压力为100~500N；Where n is 3~20, at least one of R1 and R2 is cycloalkyl or alkoxy, the rest is H, R3 is short-chain alkyl, long-chain alkyl or aryl, X is an ester group group; the initial tack of the viscose is 2.0 ~ 5.0N/mm; rolling pressure is 100 ~ 500N;
如上所述的方法，所述的非极性基团接枝丙烯酸酯中的非极性基团为短链烷基、长链烷基、芳香基、环烷基或烷氧基中的一种，其中短链烷基是指基团上一条链端的碳原子数为1~5个的烷基，如甲基(-CH3)、乙基(-CH2CH3)、丙基(-CH2CH2CH3)、异丙基(-CH(CH3)2)、正丁基(-CH2CH2CH2CH3)等；长链烷基是指基团上一条链端的碳原子数为6个以上（包括6个）的烷基，如辛烷基，十二烷基、十八烷基等；芳香基是指苯基或苯基上部分H被其他烃基取代得到的基团，如苯基(-Ph)、对甲基苯基(-Ph-CH3)等；环烷基是指饱和环状碳链结构基团，或者是多种环连接在一起的多环结构基团，如环戊烷基、环丙烷基等；烷氧基是指烷基与氧原子连接后生成的基团，如甲氧基(-OCH3)，乙氧基(-OCH2CH3)等；As mentioned above, the non-polar group in the non-polar group grafted acrylate is one of short-chain alkyl, long-chain alkyl, aryl, cycloalkyl or alkoxy , where the short-chain alkyl group refers to an alkyl group with 1 to 5 carbon atoms at one chain end of the group, such as methyl (-CH 3 ), ethyl (-CH 2 CH 3 ), propyl (-CH2CH 2 CH 3 ), isopropyl (-CH(CH 3 ) 2 ), n-butyl (-CH 2 CH 2 CH 2 CH 3 ), etc.; long-chain alkyl means that the number of carbon atoms at one chain end of the group is More than 6 (including 6) alkyl groups, such as octyl, dodecyl, octadecyl, etc.; aryl refers to the group obtained by replacing the H on the phenyl or phenyl with other hydrocarbon groups, such as Phenyl (-Ph), p-methylphenyl (-Ph-CH 3 ), etc.; cycloalkyl refers to a saturated cyclic carbon chain structural group, or a polycyclic structural group in which various rings are connected together, Such as cyclopentyl group, cyclopropanyl group, etc.; alkoxy group refers to a group formed after an alkyl group is connected to an oxygen atom, such as methoxyl group (-OCH 3 ), ethoxyl group (-OCH 2 CH 3 ), etc.;
如上所述的方法，所述的非极性基团接枝丙烯酸酯中的丙烯酸酯为丙烯酸甲酯、丙烯酸乙酯或丙烯酸丁酯中的一种；所述的非极性基团取代所述的丙烯酸酯单元中亚甲基(-CH2-)上的1~3个H从而接枝在丙烯酸酯上，接枝率为1~10%，所述的非极性基团同时也是亲油性基团，非极性基团的接入在能够对离型纸的硅油起到吸附作用的同时，由于基团的亲油性，所述的非极性基团接枝丙烯酸酯能够与丙烯酸酯胶体系中的其他油溶性组分相容，也维持了丙烯酸酯胶的高初粘力；As described above, the acrylate in the non-polar group grafted acrylate is one of methyl acrylate, ethyl acrylate or butyl acrylate; the non-polar group replaces the 1~3 Hs on the methylene (-CH 2 -) in the acrylate unit are grafted on the acrylate, the grafting rate is 1~10%, and the non-polar group is also lipophilic group, the access of non-polar group can absorb the silicone oil of the release paper, and due to the lipophilicity of the group, the non-polar group grafted acrylate can be combined with the acrylate glue Compatibility with other oil-soluble components in the system also maintains the high initial tack of the acrylic adhesive;
如上所述的方法，所述的碾压是指离型纸位于走纸辊与碾压辊之间，碾压辊面与离型纸涂布面相接触，走纸辊与离型纸底纸相接触，碾压辊与走纸辊的转向相反，通过控制碾压辊与走纸辊之间的距离来实现碾压辊对于离型纸涂布面的碾压压力的调控；所述的碾压辊的表面涂敷所述的粘胶；碾压辊与走纸辊的速度为10~100m/min；In the method as described above, the rolling means that the release paper is located between the paper feeding roller and the rolling roller, the surface of the rolling roller is in contact with the coating surface of the release paper, and the paper feeding roller is in contact with the bottom paper of the release paper. Contact, the rolling roller is opposite to the turning direction of the paper-feeding roller, and the regulation of the rolling pressure of the rolling roller to the coated surface of the release paper is realized by controlling the distance between the rolling roller and the paper-feeding roller; The surface of the roller is coated with the viscose; the speed of the rolling roller and the paper feeding roller is 10~100m/min;
如上所述的方法，所述的离型纸的底纸为格拉辛纸，辛格拉纸质地致密、均匀，有很好的内部强度和透光度，作为离型纸的底纸有耐高温、防潮和防油的功能；In the above-mentioned method, the base paper of the release paper is glassine paper, which is dense and uniform, has good internal strength and light transmittance, and has high temperature resistance as the base paper of the release paper. , Moisture-proof and oil-proof functions;
如上所述的方法，所述的离型纸的淋膜层为PET薄膜层、PE薄膜层、PP薄膜层、PVC薄膜层、CPP薄膜层、BOPP薄膜层或复合薄膜层。在经电晕处理的基材原纸上淋膜这一层薄膜层可以提高薄膜层在基材原纸上的附着力，同时改善纸张的耐水性，受潮后尺寸不易变化，而且仍保持纸张耐蠕变性好的优点；In the above-mentioned method, the coating layer of the release paper is a PET film layer, a PE film layer, a PP film layer, a PVC film layer, a CPP film layer, a BOPP film layer or a composite film layer. Coating this layer of thin film on corona-treated base paper can improve the adhesion of the film layer on the base paper, and at the same time improve the water resistance of the paper. The size is not easy to change after being wet, and the paper still maintains creep resistance. Good sex advantages;
如上所述的方法，所述的有机硅离型层为加成型有机硅层，加成型有机硅容易进行分子设计，也就是容易通过调节单体的原料配比来控制固化程度，从而可以减少有机硅不完全固化，同时加成型有机硅与单组份及缩合型有机硅相比，在固化的同时不会产生小分子物质，从而避免的对离型层的污染，保证了离型固化层的洁净，减少硅向胶带的转移。In the above-mentioned method, the silicone release layer is an addition-type silicone layer, and the addition-type silicone is easy to carry out molecular design, that is, it is easy to control the degree of curing by adjusting the raw material ratio of monomers, thereby reducing organic The silicon is not completely cured, and at the same time, compared with the one-component and condensation-type silicones, the addition-type silicones will not produce small molecular substances during curing, thereby avoiding pollution to the release layer and ensuring the release of the curing layer. Cleans and reduces transfer of silicone to tape.
有益效果：Beneficial effect:
1、本发明中采用高初粘力但低于有机硅固化层的剥离强度的聚丙烯酸酯压敏胶除去离型层上未反应的硅油，减少了硅油向胶带的转移，保证了离型层的清洁无局部缺陷，提高了胶带的残留粘结率；1. In the present invention, the polyacrylate pressure-sensitive adhesive with high initial tack but lower than the peel strength of the silicone cured layer is used to remove unreacted silicone oil on the release layer, which reduces the transfer of silicone oil to the adhesive tape and ensures the release layer The cleaning without local defects improves the residual bonding rate of the tape;
2、本发明中提出除去硅油的聚丙烯酸酯压敏胶使用非极性基团接枝，利用相似相容原理对于未反应的硅油进行吸附去除，非极性基团接枝的聚丙烯酸酯压敏胶易于制的，除硅油性能更优。2. In the present invention, the polyacrylate pressure-sensitive adhesive that removes silicone oil is grafted with non-polar groups, and the unreacted silicone oil is adsorbed and removed by using the principle of similar compatibility. The polyacrylate pressure-sensitive adhesive grafted with non-polar groups Sensitive glue is easy to make, and has better performance in removing silicone oil.
3、本发明中提出的涂敷非极性基团接枝的聚丙烯酸酯压敏胶辊碾压除去硅油的工艺简单，方便操作，可广泛用于离型纸、粘结剂应用领域。3. The polyacrylate pressure-sensitive rubber roller grafted with non-polar groups proposed in the present invention has a simple process for removing silicone oil by rolling and is easy to operate, and can be widely used in the application fields of release paper and adhesives.
具体实施方式 Detailed ways
面结合具体实施方式，进一步阐述本发明。应理解，这些实施例仅用于说明本发明而不用于限制本发明的范围。此外应理解，在阅读了本发明讲授的内容之后，本领域技术人员可以对本发明作各种改动或修改，这些等价形式同样落于本申请所附权利要求书所限定的范围。The present invention will be further described in combination with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
实施例1Example 1
本发明的一种减少离型纸有机硅转移的方法，在离型纸涂布压敏胶前采用初粘力为2.0N/m的粘胶碾压离型纸的离型层进行离型层的去除小分子硅油处理，粘胶为非极性基团接枝丙烯酸酯压敏胶，其分子结构通式为：A method of reducing the silicone transfer of release paper according to the present invention, before the release paper is coated with pressure-sensitive adhesive, the adhesive with an initial viscosity of 2.0N/m is used to roll the release layer of the release paper to carry out the release layer The removal of small molecule silicone oil treatment, the adhesive is a non-polar group grafted acrylate pressure-sensitive adhesive, and its general molecular structure is:
其中n为3，R1为环戊烷基，R2为H，R3为甲基，X为甲酯基。去除小分子硅油处理是采用粘胶对进行碾压处理；碾压压力为100N；离型纸的离型层为加成型有机硅离型层。where n is 3, R1 is cyclopentyl, R2 is H, R3 is methyl, and X is carbomethoxy. The treatment of removing small molecule silicone oil is to use viscose to carry out rolling treatment; the rolling pressure is 100N; the release layer of the release paper is an addition type silicone release layer.
实施例2Example 2
本发明的一种减少离型纸有机硅转移的方法，在离型纸涂布压敏胶前采用初粘力为5.0N/m的粘胶碾压离型纸的离型层进行离型层的去除小分子硅油处理，粘胶为非极性基团接枝丙烯酸酯压敏胶，其分子结构通式为：A method for reducing the silicone transfer of release paper according to the present invention, before the release paper is coated with pressure-sensitive adhesive, the adhesive with an initial viscosity of 5.0N/m is used to roll the release layer of the release paper to carry out the release layer The removal of small molecule silicone oil treatment, the adhesive is a non-polar group grafted acrylate pressure-sensitive adhesive, and its general molecular structure is:
其中n为20，R1为甲氧基，R2为环丙烷基，R3为十八烷基，X为乙酯基；所述的去除小分子硅油处理是采用粘胶对进行碾压处理，碾压压力为500N；离型纸的离型层为加成型有机硅离型层。Wherein n is 20, R 1 is methoxy, R 2 is cyclopropanyl, R 3 is octadecyl, X is ethyl carboxyl; the described removal of small molecule silicone oil treatment is to use viscose to carry out rolling treatment , the rolling pressure is 500N; the release layer of the release paper is an addition type silicone release layer.
实施例3Example 3
本发明的一种减少离型纸有机硅转移的方法，在离型纸涂布压敏胶前采用初粘力为3.0N/m的粘胶碾压离型纸的离型层进行离型层的去除小分子硅油处理，粘胶为非极性基团接枝丙烯酸酯压敏胶，其分子结构通式为：A method for reducing the silicone transfer of release paper according to the present invention, before the release paper is coated with pressure-sensitive adhesive, the adhesive with an initial viscosity of 3.0N/m is used to roll the release layer of the release paper to carry out the release layer The removal of small molecule silicone oil treatment, the adhesive is a non-polar group grafted acrylate pressure-sensitive adhesive, and its general molecular structure is:
其中n为10，R1为乙氧基，R2为环戊烷，R3为乙基，X为丙酯基，R1和R2的总接枝率为1%；所述的去除小分子硅油处理是采用粘胶对进行碾压处理，碾压压力为400N；离型纸的离型层为缩合型有机硅离型层，离型纸的淋膜层为PET薄膜层，离型纸位于走纸辊与碾压辊之间，碾压辊面与离型纸涂布面相接触，走纸辊与离型纸底纸相接触，碾压辊与走纸辊的转向相反，通过控制碾压辊与走纸辊之间的距离来实现碾压辊对于离型纸涂布面的碾压压力的调控，碾压辊的表面涂敷上述的粘胶；碾压辊与走纸辊的速度为10m/min。Wherein n is 10, R 1 is ethoxyl group, R 2 is cyclopentane, R 3 is ethyl, X is propyl carboxyl, R 1 and R 2 total grafting rate is 1%; Described removal is small Molecular silicone oil treatment is to use viscose to carry out rolling treatment, and the rolling pressure is 400N; the release layer of the release paper is a condensed silicone release layer, the coating layer of the release paper is a PET film layer, and the release paper Located between the paper feeding roller and the rolling roller, the surface of the rolling roller is in contact with the coating surface of the release paper, the paper feeding roller is in contact with the backing paper of the release paper, and the direction of the rolling roller is opposite to that of the paper feeding roller. The distance between the pressing roller and the paper feeding roller is used to realize the regulation of the rolling pressure of the rolling roller on the coating surface of the release paper. The surface of the rolling roller is coated with the above-mentioned glue; the speed of the rolling roller and the paper feeding roller 10m/min.
实施例4Example 4
本发明的一种减少离型纸有机硅转移的方法，在离型纸涂布压敏胶前采用初粘力为4.0N/m的粘胶碾压离型纸的离型层进行离型层的去除小分子硅油处理，粘胶为非极性基团接枝丙烯酸酯压敏胶，其分子结构通式为：A method for reducing the silicone transfer of release paper according to the present invention, before the release paper is coated with pressure-sensitive adhesive, the adhesive with an initial viscosity of 4.0N/m is used to roll the release layer of the release paper to carry out the release layer The removal of small molecule silicone oil treatment, the adhesive is a non-polar group grafted acrylate pressure-sensitive adhesive, and its general molecular structure is:
其中n为10，R1为环丙烷基，R2为H，R3为甲苯基，X为丁酯基，R1和R2的总接枝率为10%；所述的去除小分子硅油处理是采用粘胶对进行碾压处理，碾压压力为200N；离型纸的离型层为加成型有机硅离型层，离型纸的淋膜层为PE薄膜层，离型纸位于走纸辊与碾压辊之间，碾压辊面与离型纸涂布面相接触，走纸辊与离型纸底纸相接触，碾压辊与走纸辊的转向相反，通过控制碾压辊与走纸辊之间的距离来实现碾压辊对于离型纸涂布面的碾压压力的调控，碾压辊的表面涂敷上述的粘胶；碾压辊与走纸辊的速度为100m/min。Wherein n is 10, R 1 is a cyclopropyl group, R 2 is H, R 3 is a tolyl group, X is a butyl ester group, and the total grafting rate of R 1 and R 2 is 10%; the described removal of small molecule silicone oil The treatment is to use viscose to carry out rolling treatment, and the rolling pressure is 200N; the release layer of the release paper is an addition-type silicone release layer, the coating layer of the release paper is a PE film layer, and the release paper is located Between the paper roller and the rolling roller, the surface of the rolling roller is in contact with the coating surface of the release paper, and the paper feeding roller is in contact with the bottom paper of the release paper. The direction of the rolling roller and the paper feeding roller is opposite. The distance between the rolling roller and the paper feeding roller is used to realize the regulation of the rolling pressure of the rolling roller on the coated surface of the release paper. The surface of the rolling roller is coated with the above-mentioned glue; the speed of the rolling roller and the paper feeding roller is 100m /min.
实施例5Example 5
本发明的一种减少离型纸有机硅转移的方法，在离型纸涂布压敏胶前采用初粘力为3.5N/m的粘胶碾压离型纸的离型层进行离型层的去除小分子硅油处理，粘胶为非极性基团接枝丙烯酸酯压敏胶，其分子结构通式为：A method for reducing the silicone transfer of release paper according to the present invention, before the release paper is coated with pressure-sensitive adhesive, the adhesive with an initial viscosity of 3.5N/m is used to roll the release layer of the release paper to carry out the release layer The removal of small molecule silicone oil treatment, the adhesive is a non-polar group grafted acrylate pressure-sensitive adhesive, and its general molecular structure is:
其中n为15，R1为H，R2为甲氧基，R3为辛烷基，X为丁酯基，R1和R2的总接枝率为5%；所述的去除小分子硅油处理是采用粘胶对进行碾压处理，碾压压力为200N；离型纸的离型层为加成型有机硅离型层，离型纸的淋膜层为PP薄膜层，离型纸位于走纸辊与碾压辊之间，碾压辊面与离型纸涂布面相接触，走纸辊与离型纸底纸相接触，碾压辊与走纸辊的转向相反，通过控制碾压辊与走纸辊之间的距离来实现碾压辊对于离型纸涂布面的碾压压力的调控，碾压辊的表面涂敷上述的粘胶；碾压辊与走纸辊的速度为50m/min。Wherein n is 15, R 1 is H, R 2 is methoxy, R 3 is octyl, X is butyl group, R 1 and R 2 total graft rate is 5%; Silicone oil treatment is to use viscose to carry out rolling treatment, and the rolling pressure is 200N; the release layer of the release paper is an addition-type silicone release layer, and the coating layer of the release paper is a PP film layer. Between the paper feeding roller and the rolling roller, the surface of the rolling roller is in contact with the coated surface of the release paper, and the paper feeding roller is in contact with the bottom paper of the release paper. The direction of the rolling roller and the paper feeding roller is opposite. The distance between the rolling roller and the paper feeding roller is used to realize the regulation of the rolling pressure of the rolling roller to the coating surface of the release paper, and the surface of the rolling roller is coated with the above-mentioned viscose; the speed of the rolling roller and the paper feeding roller is 50m/min.
实施例6Example 6
本发明的一种减少离型纸有机硅转移的方法，在离型纸涂布压敏胶前采用初粘力为5N/m的粘胶碾压离型纸的离型层进行离型层的去除小分子硅油处理，粘胶为非极性基团接枝丙烯酸酯压敏胶，其分子结构通式为：A kind of method of reducing release paper organic silicon transfer of the present invention, adopts the viscose glue that initial tack is 5N/m to roll the release layer of release paper to carry out release layer before release paper coating pressure-sensitive adhesive Remove the small molecule silicone oil treatment, the adhesive is a non-polar group grafted acrylate pressure-sensitive adhesive, and its general molecular structure is:
其中n为20，R1为H，R2为环戊烷，R3为异丙基，X为甲酯基，R1和R2的总接枝率为2%；所述的去除小分子硅油处理是采用粘胶对进行碾压处理，碾压压力为450N；离型纸的离型层为加成型有机硅离型层，离型纸的淋膜层为PVC薄膜层，离型纸位于走纸辊与碾压辊之间，碾压辊面与离型纸涂布面相接触，走纸辊与离型纸底纸相接触，碾压辊与走纸辊的转向相反，通过控制碾压辊与走纸辊之间的距离来实现碾压辊对于离型纸涂布面的碾压压力的调控，碾压辊的表面涂敷上述的粘胶；碾压辊与走纸辊的速度为50m/min。Wherein n is 20, R 1 is H, R 2 is cyclopentane, R 3 is isopropyl, X is carbomethoxy, the total grafting rate of R 1 and R 2 is 2%; the described removal of small molecules Silicone oil treatment is to use viscose to carry out rolling treatment, and the rolling pressure is 450N; the release layer of the release paper is an addition-type silicone release layer, and the coating layer of the release paper is a PVC film layer. Between the paper feeding roller and the rolling roller, the surface of the rolling roller is in contact with the coated surface of the release paper, and the paper feeding roller is in contact with the bottom paper of the release paper. The direction of the rolling roller and the paper feeding roller is opposite. The distance between the rolling roller and the paper feeding roller is used to realize the regulation of the rolling pressure of the rolling roller to the coating surface of the release paper, and the surface of the rolling roller is coated with the above-mentioned viscose; the speed of the rolling roller and the paper feeding roller is 50m/min.
实施例7Example 7
本发明的一种减少离型纸有机硅转移的方法，在离型纸涂布压敏胶前采用初粘力为3N/m的粘胶碾压离型纸的离型层进行离型层的去除小分子硅油处理，粘胶为非极性基团接枝丙烯酸酯压敏胶，其分子结构通式为：A kind of method of reducing release paper silicone transfer of the present invention, before the release paper is coated with pressure-sensitive adhesive, it is 3N/m viscose to roll the release layer of the release paper to carry out the release layer Remove the small molecule silicone oil treatment, the adhesive is a non-polar group grafted acrylate pressure-sensitive adhesive, and its general molecular structure is:
其中n为8，R1为H，R2为环丙烷，R3为正丁基，X为甲酯基，R1和R2的总接枝率为9%；所述的去除小分子硅油处理是采用粘胶对进行碾压处理，碾压压力为450N；离型纸的离型层为缩合有机硅离型层，离型纸的淋膜层为CPP薄膜层，离型纸位于走纸辊与碾压辊之间，碾压辊面与离型纸涂布面相接触，走纸辊与离型纸底纸相接触，碾压辊与走纸辊的转向相反，通过控制碾压辊与走纸辊之间的距离来实现碾压辊对于离型纸涂布面的碾压压力的调控，碾压辊的表面涂敷上述的粘胶；碾压辊与走纸辊的速度为100m/min。Wherein n is 8, R 1 is H, R 2 is cyclopropane, R 3 is n-butyl, X is carbomethoxy, the total grafting rate of R 1 and R 2 is 9%; the described removal of small molecule silicone oil The treatment is to use viscose to carry out rolling treatment, and the rolling pressure is 450N; the release layer of the release paper is a condensed silicone release layer, the coating layer of the release paper is a CPP film layer, and the release paper is located at the Between the roller and the rolling roller, the surface of the rolling roller is in contact with the coating surface of the release paper, and the paper feeding roller is in contact with the bottom paper of the release paper. The direction of the rolling roller and the paper feeding roller is opposite. The distance between the feeding rollers is used to realize the regulation of the rolling pressure of the rolling rollers on the release paper coating surface, and the surface of the rolling rollers is coated with the above-mentioned glue; the speed of the rolling rollers and the feeding rollers is 100m/ min.
实施例8Example 8
本发明的一种减少离型纸有机硅转移的方法，在离型纸涂布压敏胶前采用初粘力为4.5N/m的粘胶碾压离型纸的离型层进行离型层的去除小分子硅油处理，粘胶为非极性基团接枝丙烯酸酯压敏胶，其分子结构通式为：A method for reducing the silicone transfer of release paper according to the present invention, before the release paper is coated with pressure-sensitive adhesive, the adhesive with an initial viscosity of 4.5N/m is used to roll the release layer of the release paper to carry out the release layer The removal of small molecule silicone oil treatment, the adhesive is a non-polar group grafted acrylate pressure-sensitive adhesive, and its general molecular structure is:
其中n为16，R1为甲氧基，R2为环丙烷，R3为十二烷基，X为乙酯基，R1和R2的总接枝率为9%；所述的去除小分子硅油处理是采用粘胶对进行碾压处理，碾压压力为450N；离型纸的离型层为缩合有机硅离型层，离型纸的淋膜层为CPP薄膜层，离型纸位于走纸辊与碾压辊之间，碾压辊面与离型纸涂布面相接触，走纸辊与离型纸底纸相接触，碾压辊与走纸辊的转向相反，通过控制碾压辊与走纸辊之间的距离来实现碾压辊对于离型纸涂布面的碾压压力的调控，碾压辊的表面涂敷上述的粘胶；碾压辊与走纸辊的速度为100m/min。Wherein n is 16, R 1 is a methoxyl group, R 2 is cyclopropane, R 3 is a dodecyl group, X is a carboethoxy group, R 1 and R 2 have a total graft rate of 9%; the removal The treatment of small molecule silicone oil is to use viscose to carry out rolling treatment, and the rolling pressure is 450N; the release layer of the release paper is a condensed silicone release layer, the coating layer of the release paper is a CPP film layer, and the release paper Located between the paper feeding roller and the rolling roller, the surface of the rolling roller is in contact with the coating surface of the release paper, the paper feeding roller is in contact with the backing paper of the release paper, and the direction of the rolling roller is opposite to that of the paper feeding roller. The distance between the pressing roller and the paper feeding roller is used to realize the regulation of the rolling pressure of the rolling roller on the coating surface of the release paper. The surface of the rolling roller is coated with the above-mentioned glue; the speed of the rolling roller and the paper feeding roller 100m/min.
实施例9Example 9
本发明的一种减少离型纸有机硅转移的方法，在离型纸涂布压敏胶前采用初粘力为4.5N/m的粘胶碾压离型纸的离型层进行离型层的去除小分子硅油处理，粘胶为非极性基团接枝丙烯酸酯压敏胶，其分子结构通式为：A method for reducing the silicone transfer of release paper according to the present invention, before the release paper is coated with pressure-sensitive adhesive, the adhesive with an initial viscosity of 4.5N/m is used to roll the release layer of the release paper to carry out the release layer The removal of small molecule silicone oil treatment, the adhesive is a non-polar group grafted acrylate pressure-sensitive adhesive, and its general molecular structure is:
其中n为14，R1为甲氧基，R2为环戊烷，R3为苯基，X为乙酯基，R1和R2的总接枝率为7%；所述的去除小分子硅油处理是采用粘胶对进行碾压处理，碾压压力为150N；离型纸的离型层为加成有机硅离型层，离型纸的淋膜层为BOPP薄膜层，离型纸位于走纸辊与碾压辊之间，碾压辊面与离型纸涂布面相接触，走纸辊与离型纸底纸相接触，碾压辊与走纸辊的转向相反，通过控制碾压辊与走纸辊之间的距离来实现碾压辊对于离型纸涂布面的碾压压力的调控，碾压辊的表面涂敷上述的粘胶；碾压辊与走纸辊的速度为25m/min。Wherein n is 14, R 1 is a methoxy group, R 2 is cyclopentane, R 3 is a phenyl group, X is a carboethoxy group, and R 1 and R 2 have a total graft rate of 7%; Molecular silicone oil treatment is to use viscose to carry out rolling treatment, and the rolling pressure is 150N; the release layer of the release paper is an added silicone release layer, and the coating layer of the release paper is a BOPP film layer. Located between the paper feeding roller and the rolling roller, the surface of the rolling roller is in contact with the coating surface of the release paper, the paper feeding roller is in contact with the backing paper of the release paper, and the direction of the rolling roller is opposite to that of the paper feeding roller. The distance between the pressing roller and the paper feeding roller is used to realize the regulation of the rolling pressure of the rolling roller on the coating surface of the release paper. The surface of the rolling roller is coated with the above-mentioned glue; the speed of the rolling roller and the paper feeding roller It is 25m/min.
实施例10Example 10
本发明的一种减少离型纸有机硅转移的方法，在离型纸涂布压敏胶前采用初粘力为2.5N/m的粘胶碾压离型纸的离型层进行离型层的去除小分子硅油处理，粘胶为非极性基团接枝丙烯酸酯压敏胶，其分子结构通式为：A method for reducing the silicone transfer of release paper according to the present invention, before the release paper is coated with pressure-sensitive adhesive, the adhesive with an initial viscosity of 2.5N/m is used to roll the release layer of the release paper to carry out the release layer The removal of small molecule silicone oil treatment, the adhesive is a non-polar group grafted acrylate pressure-sensitive adhesive, and its general molecular structure is:
其中n为4，R1为环戊烷基，R2为H，R3为丙基，X为甲酯基。去除小分子硅油处理是采用粘胶对进行碾压处理；碾压压力为100N；离型纸的离型层为加成型有机硅离型层。where n is 4, R1 is cyclopentyl, R2 is H, R3 is propyl, and X is carbomethoxy. The treatment of removing small molecule silicone oil is to use viscose to carry out rolling treatment; the rolling pressure is 100N; the release layer of the release paper is an addition type silicone release layer.
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