柔版印刷UV油墨介绍

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柔版印刷UV油墨的介绍
上海俊彩化工科技有限公司 2014‐7‐17
柔性版印刷
1. 柔性版印刷是使用柔性印版,通过网纹 辊传递油墨的印刷方式。
2.
柔印具有环保、印刷颜色饱和度高、印 刷范围广、印刷效率高等优点。
3. 由于不断采用新的印刷技术,柔印已发 展成为一种成熟的印刷工艺,特别在包 装行业中,柔印已占据主导地位。目前, 在各种印刷方式中,柔印比例占据28%, 胶印占45%。预计未来几年内,柔印的比 例将达到33%以上。
MacDermid Flex‐Light CBU Plate
5
4
Degree of Plate Swell
3
2
1
1
1
11
1
0 0 00 000000 0 00 000
SR212SBR23S8R28S5R29S5R33S9R35S1R35S5R45S4R49S2R49S4R50S8R53C1D5C60D5C62DC56N42S27R090S0R390C2D09S08R79209
• SR508, CD562, and SR9003
– Low viscosity – SR9003 has some pigment
grinding capability – All are good diluents of other
UV components
MacDermid Flex‐Light Plate
MacDermid Flex‐Light Digital EPIC Plate
5
4 44
Degree of Plate Swell
3
22
22
2
1
1
1
1 11
0
0 0 000
0 00 0
SR212SBR23S8R28S5R29S5R33S9R35S1R35S5R45S4R49S2R49S4R50S8R53C1D5C60D5C62DC56N42S27R090S0R390C2D09S08R79209
Low viscosity
Designed for UV flexo
Fast cure
Good pigment wetting
Good pigment wetting
Good cure speed
Oligomer Letdowns for UV Flexo
CN131B CN132 CN133 CN371 CN386 CN929 CN991
• SR531
– Increases flexibility of system without decreasing toughness
– Allows for thermoformability
• SR492
– Increase cure speed – Pigment grinding capabilities
2 2 2 2 2 2 2 2 2 2 2
Structure
Epoxy Acrylate Epoxy Acrylate Epoxy Acrylate Amine Acrylate Amine Acrylate AL Urethane Acrylate AL Urethane Acrylate Polyester Acrylate Polyester Acrylate Polyester Acrylate AL Urethane Acrylate
MacDermid Flex‐Light EPIC Plate
5 55
5
44
4
Degree of Plate Swell
3
33
33
2
2
2
222
1
11
1
1
0
0
0
SR212SBR23S8R28S5R29S5R33S9R35S1R35S5R45S4R49S2R49S4R50S8R53C1D5C60D56C2DC56N42S27R090S0R390C2D09S08R79209
• CN9006, CN991, and CN929, CN9008
– Aliphatic urethane acrylates – Used to formulate
weatherable flexo inks – CN9006 is very hard and fast
curing – CN991 and CN929 are
5
Degree of Plate Swell
4
3
3
22
2
2
2
1
1 11 11
1
00
0 00000
0
0
SR212SBR23S8R28S5R29S5R33S9R35S1R35S5R45S4R49S2R49S4R50S8R53C1D5C60D5C62DC56N42S27R090S0R390C2D09S08R79209
3. UV油墨是通过紫外线照射固化的油墨,它 不含溶剂,主要成分是色料,感光树脂、 活性稀释剂 、光引发剂及助剂组成
UV柔印油墨的物性指标
1. 低粘度:500 – 1200 2. 对印版低溶胀:才能保证图文清晰 3. 附着力好 4. 固化速度快:100米/分钟 5. 油墨的稳定性好:没有颜料浮色,没有凝胶
– Increase cure speed – Hard films – CN132 increase opacity of
white pigmented inks
• CN131B
– Low viscosity – Enhances adhesion to plastics – Flexible and thermoformable – Good cure rate
Millbase oligomers
CN293 CN2284 CN2282 CN2278
Viscosity Acrylates Health 25˚ C (60˚ C) / Molecule Rating
7700
6
3
320
2
3
80000
4
2
250
4
3
Structure
Polyester Acrylate Polyester Acrylate Polyester Acrylate Polyester Acrylate
• SR601
– Very fast cure speed – Toughness and scratch
resistance of an oligomer
• SR339
– Adhesion to polar plastics
• SR355, SR399LV, SR454, and SR494
– Greatly increase cure speed – Increase film hardness
Health Ratings were pulled from the product MSDS Acrylates / molecule is an average Viscosities in red are at 60˚ C
Suggested Oligomers
• CN132 and CN133
MacDermid Flex‐Light ULT 5.0 Plate
5
Degree of Plate Swell
4
3 33
2
22
2
11
111 11 11
0
0 0 000
0
0
SR212SBR23S8R28S5R29S5R33S9R35S1R35S5R45S4R49S2R49S4R50S8R53C1D5C60D5C62DC56N42S27R090S0R390C2D09S08R79209
4. 单位长度内的网穴数称为网纹辊的线数或着 墨孔的线数,单位为“线/in”(LPI)。网线 数越高,传墨越均匀,墨层越薄。
柔性版印刷是凸印
凸版是图文部分明显 高于非图文部分的印 版。 现在的凸版大都是橡 胶版及树脂版,也就 是柔性版,柔性版印 版柔软,可印瓦楞纸 板、塑料袋等。
柔印、胶印、凹印三种方式比较
项目
柔印
胶印
凹印
印刷质量 一般,<125LPI
套准精度稍差
制版 较快,成本为 胶印1.35倍
印刷速度 较快,可达成 12000张/小时
环保性
比较环保
好,图象清晰、 最好,色彩丰富,
层次感强
图象清晰
最快,成本最 省
快,可达成 15000张/小时
不环保
最慢,成本为胶 印4.35倍
最快,可达 30000张/小时
不环保
市场份额
28%
35%
20%
柔性版印刷的发展状况
在包装行业中,柔性版印刷已成为主导的印刷工艺。在 美国,柔性版印刷已突破传统包装印刷市场的界限,开始 应用于报纸、书刊、商业票据等。
柔印在世界印刷市场的发展历程
时期 50年代 70年代 90年代
目前
胶印 55% 55% 46% 45%
凹印 30% 28% 28% 20%
flexible – CN9008 best for low odor
Suggested Oligomers
• CN2281
– Low viscosity – Excellent cure rate
• CN2282
– Higher viscosity – Good flexibility – Excellent cure – Enhances film toughness
• CN386
– Lower viscosity – Fast surface cure – Higher extractables – Higher yellowing
CMYK Millbases
Pigment Supplier Code Supplier % Pigment % PRO7381 % SR492 % Solsperse 39000 1 Particle Size Yield Stress Plastic Viscosity
柔性版印刷
柔性版印刷的定义: 使用柔性版,通过网 纹辊传递油墨的印刷 方式。
柔印机的心脏—网纹辊
1. 由于柔印机墨路短,在保证传墨均匀和稳定 时,网纹辊是至关重要的。
2. 网纹辊起着向印版上图文部分定量是指网纹辊表面所雕刻的形状一致,分 布均匀的微小凹孔,也叫着墨孔。
CN2262 CN2270 CN2281 CN9006
Viscosity 25˚ C (60˚ C)
250 900 18000 1700
25 (400) (660)
500 55
1000 (1800)
Acrylates / Molecule
1 2 3 2 1 3 2 4 2 2 6
Health Rating
3 EO TMPTA 3 PO TMPTA
4EO PETA DPGDA CTFA
4 EO BPADA 2 PO NPGDA
Health Ratings were pulled from the product MSDS Acrylates / molecule is an average
UV单体推荐
UV单体推荐
Viscosity Acrylates / Health
(25˚ C)
Molecule Rating
15
2
2
10
2
2
12
1
2
500
4
1
7000
5
2
60
3
2
90
3
2
150
4
3
10
2
3
15
1
2
1080 15
2
2
2
2
Structure
2 EO HDDA HDDA 2-PEA
DiTMPTA DiPETA
• CN293
CN2282
– Contains PETA
New for pigment dispersion
– Excellent pigment dispersion
Good cure speed
– Very fast cure speed
Excellent toughness
Cn2278
CN2284
• CN2270
– Low viscosity – Excellent flow properties – Some pigment wetting
• CN2262
– Good toughness – Low cost
• CN371
– Higher viscosity – Fastest surface cure speed – Very low extractables
凸印 10% 5% 4% 0%
柔印 4% 10% 18% 28%
丝印 1% 1% 2% 2%
其他 0% 1% 2% 5%
柔印油墨
1. 柔印油墨是一种低粘度快干型油墨,可分 为溶剂油墨、水基油墨和UV油墨三类。
2. 水基油墨也叫水墨,其主要组成成分包括 色料、树脂、水和助剂构成。水墨是一种 环保型的油墨。
现象。
UV树脂和单体
UV单体: 1. 占配方的30 - 60% 2. 注意对印版的溶胀问题 3. 降低粘度
UV树脂: 1. 占配方的10 - 60% 2. 颜料的润湿和分散 3. 涂膜性能的体现
CD562 SR238 SR339 SR355 SR399LV SR454 SR492 SR494 SR508 SR531 SR601 SR9003
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