WO2010095818A2 - Printing sheet and printing roller including printing sheet - Google Patents

Printing sheet and printing roller including printing sheet Download PDF

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Publication number
WO2010095818A2
WO2010095818A2 PCT/KR2010/000524 KR2010000524W WO2010095818A2 WO 2010095818 A2 WO2010095818 A2 WO 2010095818A2 KR 2010000524 W KR2010000524 W KR 2010000524W WO 2010095818 A2 WO2010095818 A2 WO 2010095818A2
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WO
WIPO (PCT)
Prior art keywords
printing
sheet
layer
printing sheet
roller
Prior art date
Application number
PCT/KR2010/000524
Other languages
French (fr)
Other versions
WO2010095818A3 (en
Inventor
Ji-Ho Eom
Choong-Kon Ko
Sung-Hyun Yu
Jun-Ho Jeong
Original Assignee
Tae In Chemical Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tae In Chemical Co., Ltd. filed Critical Tae In Chemical Co., Ltd.
Publication of WO2010095818A2 publication Critical patent/WO2010095818A2/en
Publication of WO2010095818A3 publication Critical patent/WO2010095818A3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/283—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polysiloxanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
    • B41N10/02—Blanket structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
    • B41N10/02—Blanket structure
    • B41N10/04—Blanket structure multi-layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/02—Top layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/06—Backcoats; Back layers; Bottom layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
    • B41N2210/14—Location or type of the layers in multi-layer blankets or like coverings characterised by macromolecular organic compounds

Definitions

  • the present invention is related to a printing sheet, more specifically to a printing sheet and a printing roller including the printing sheet.
  • FPD flat panel display device
  • LCD liquid crystal display
  • PDP plasma display panel
  • FED field emission display
  • VFD vacuum fluorescent display
  • the flat panel display device can be manufactured by way of offset printing, of which the manufacturing process is simple and the production cost is low.
  • the tensile force applied to a printing layer can vary while the printing layer rotates, because of the difference between the inner diameter and the outer diameter, thereby changing the length of the printing layer. This makes it difficult to repeatedly print a pattern, formed on the printing layer, in a certain coordinate area.
  • the present invention provides a printing sheet and a printing roller including the printing sheet that can allow printing to be performed repeatedly in a certain coordinate area.
  • An aspect of the present invention features a printing sheet.
  • the printing sheet includes a base film, an adhesive layer and a printing layer that are sequentially layered.
  • the printing sheet is formed with a groove, which is formed in at least a portion of the printing layer.
  • the groove can be extended to a portion of the adhesive layer passing through the printing layer.
  • the adhesive layer can include an elastomer.
  • the elastomer can include a silicon adhesive.
  • the printing layer can include a plurality of printing parts, and the printing sheet can further include a sheet connection unit, which is formed in between the plurality of printing parts.
  • the sheet connection unit can include a silicon adhesive.
  • the printing roller in accordance with an embodiment of the present invention includes a roller support and a printing sheet.
  • the printing sheet includes a base film, an adhesive layer and a printing layer that are sequentially layerd, and the printing sheet is formed with a groove, which is formed in at least a portion of the printing layer.
  • the groove can be extended to a portion of the adhesive layer passing through the printing layer.
  • the groove can be formed in a perpendicular direction of a tensile force to be applied to the printing sheet during the printing process.
  • the adhesive layer can include an elastomer.
  • the elastomer can include a silicon adhesive.
  • the printing layer can include a plurality of printing parts, and the printing sheet can further include a sheet connection unit, which is formed in between the plurality of printing parts.
  • the sheet connection unit can include a silicon adhesive.
  • tensile force applied to a printing layer can be removed by a groove formed in a printing sheet, a fold can be prevented from occurring. As a result, misalignment can be prevented, and a pattern formed in a printing roller can be copied on a certain portion of a print surface.
  • the printing layer can be effectively prevented from being folded by stress generated on either side of a contact point between the printing sheet and the print surface.
  • Figures 1 to 4 are cross-sectional views illustrating a method of manufacturing a printing sheet in accordance with an embodiment of the present invention.
  • Figure 5 is a cross-sectional view illustrating a structure of a printing sheet in accordance with an embodiment of the present invention.
  • Figure 6 is a plan view illustrating a structure of a printing sheet in accordance with an embodiment of the present invention.
  • Figure 7 is a cross-sectional view illustrating a structure of a conventional printing roller.
  • Figure 8 is a cross-sectional view illustrating a structure of a printing roller in accordance with an embodiment of the present invention.
  • Figure 9 is a cross-sectional view illustrating a printing sheet in accordance with another embodiment of the present invention.
  • Figure 10 is a plan view illustrating a printing sheet in accordance with yet another embodiment of the present invention.
  • Figures 1 to 4 are cross-sectional views illustrating a method of manufacturing a printing sheet in accordance with an embodiment of the present invention.
  • a base film 12 is provided.
  • the base film 12 can be made of a material that can be stretched. More specifically, the base film 12 can be a polyethyleneterephthalate (PET) film.
  • PET polyethyleneterephthalate
  • a printing layer 14 is provided.
  • the printing layer 14 can be a layer on which an ink pattern is formed.
  • the ink pattern formed on the printing layer 14 can be copied on a print surface such as a substrate or paper.
  • the printing layer 14 can be a silicon layer.
  • an adhesive layer 16 can be interposed between the base film 12 and the printing layer 14.
  • the base film 12 and the printing layer 14 can be coupled to each other without being separated from each other by the adhesive layer 16.
  • the adhesive layer 16 can be formed by coating an adhesive on a surface between the base film 12 and the printing layer 14 and then hardening the adhesive.
  • the adhesive layer 16 can be made of a material that is little varied by stress, more specifically by laterial stress.
  • the adhesive layer 16 can be an elastomer. More specifically, the adhesive layer 16 can be a silicon adhesive.
  • the silicon adhesive can be manufactured by mixing 0.5 to 5 % ofcrosslinkerbyweightinto95to99.5%ofsilicon-contatiningpolymerbyweight.
  • the silicon-containing polymer can be manufactured by mixing 60 % of methylate silica by weight into 40 % of polydimethyl siloxane-containing polymer by weight.
  • the polydimethyl siloxane-containing polymer can be polydimethyl siloxane polymer itself or a mixture of polydimethyl siloxane polymer and hydroxy terminated polymer.
  • the crosslinker can promote the crosslinking of polydimethyl siloxane contained in the silicon polymer.
  • the hardenercrosslinker canbebenzoylperoxide,2,4-dichlorobenzoylperoxideorepoxysilaneortitanium,platinum
  • a groove 17 can be formed in at least a portion of the printing layer 14.
  • the groove 17 can be extended so that it can be also formed in an upper portion of the adhesive layer 16.
  • a plurality of fastening holes 18 can be formed at both ends of the printing sheet.
  • Figure 5 is a cross-sectional view illustrating a structure of a printing sheet in accordance with an embodiment of the present invention.
  • a printing sheet 10 having the base film 12, the adhesive layer 16 and the printing layer 14 can include a plurality of printing parts 14a and 14b.
  • a sheet connection unit 19 can be formed in between the printing parts 14a and 14b.
  • the sheet connection unit 19 can be extended so that it can be also formed in a portion of the adhesive layer 16.
  • the sheet connection unit 19 can function to connect the plurality of printing parts 14a and 14b to one another if the printing sheet 10 is made large.
  • the sheet connection unit 19 can be formed by first coating an adhesive on a surface in between the plurality of printing parts 14a and 14b and then curing the adhesive.
  • the sheet connection unit 19 can be an elastomer. More specifically, the elastomer can be a silicon adhesive.
  • the sheet connection unit 19 Since the sheet connection unit 19 has a property of strong adhesion, the sheet connection unit 19 can prevent each printing sheet from being separated from another printing sheet by stress generated during a printing process.
  • Figure 6 is a plan view illustrating a structure of a printing sheet in accordance with an embodiment of the present invention.
  • the cross-sections of Figures 4 and 5 correspond to transverse sections I-I' and II-II' of Figure 3, respectively.
  • the groove 17 can be formed in a perpendicular direction of a tensile force that will be applied to the printing sheet 10 during a printing process using the printing sheet 10. More specifically, the groove 17 can be parallel to the direction of arrangement of the fastening holes 18.
  • the sheet connection unit 19 can be also interposed between at least two printing layers 14. By disposing the sheet connection unit 19 in between the printing layers 14 in a vertical or horizontal direction, the surface area of the printing layers 14 can be enlarged.
  • Figure 7 is a cross-sectional view illustrating a structure of a conventional printing roller.
  • Illustrated in Figure 7 are a roller support 2 and a printing layer 1, which is disposed on an outer surface of the roller suppot 2.
  • a print pattern can be formed on the printing layer 1.
  • a jig 4 can be connected to both ends of the printing layer 1.
  • a tensile force can be provided to the printing layer 1 by the jig 4.
  • the magnitude of the tensile force applied to either side of a contact point B at which the printing layer 1 and a print surface 3 make contact can vary, depending on the rotational direction of the roller support 2. Specifically, if the roller support 2 rotates in a clockwise direction, the tensile force F of the right portion C of the contact point B of the printing layer 1 can be smaller than the tensile force F of the left portion A of the contact point B, thus forming a fold in the right portion C of the contact point B of the printing layer 1. This can make it difficult to copy the pattern in the printing layer 1 on a certain portion of the print surface 3.
  • Figure 8 is a cross-sectional view illustrating a structure of a printing roller in accordance with an embodiment of the present invention.
  • FIG 8 Illustrated in Figure 8 are a roller support 24 and a printing sheet 10, which is disposed on an outer surface of the roller support 24.
  • the printing sheet 10 can be the same as what has been described with reference to Figures 4, 5 and 6.
  • a jig 22 can be connected to both ends of the printing sheet 10.
  • the jig 22 can be fastened to the plurality of fastening holes 18 (refer to Figure 4), which are formed at both ends of the printing sheet 10, by using a fixing member.
  • the fixing member can be a bolt or rivet.
  • the adhesive layer 16 is little varied by laterial stress, the printing layer 14 can be effectively prevented from being folded by stress generated on either side of a contact point B between the printing sheet 10 and the print surface 30.
  • Figure 9 is a cross-sectional view illustrating a printing sheet in accordance with another embodiment of the present invention.
  • the printing sheet in accordance with the present embodiment can be manufactured by using the same method as that of the printing sheet described in Figures 1 to 4.
  • a printing sheet of the present embodiment can include, in the order of, a base film 12, an adhesive layer 16 and a printing layer 14, and can further include a buffer film 15, which is interposed between the adhesive layer 16 and the printing layer 14.
  • the buffer film 15 can be made of a material that has stronger adhesion between the buffer film 15 and the printing layer 14 and between the buffer film 15 and the adhesive layer 16 than direct adhesion between the printing layer 14 and the adhesive layer 16.
  • the buffer film 15 can be a polyethyleneterephthalate (PET) film.
  • the buffer film 15 By disposing the buffer film 15 in the printing sheet, adhesion between the layers can be improved. That is, since the buffer film 15 is strongly coupled to the printing layer 14, the printing layer 14 can be prevented from being deformed during the printing process, thus improving the surface smoothness of the printing layer 14.
  • the adhesive layer 16 can be prevented from being deformed during the printing process. With this configuration, the printing layer 14 can be further prevented from being folded by laterial stress.
  • the printing sheet further including the buffer film 15 can include the groove 17, which is formed in a portion of the printing layer 14 or extended to the printing layer 14 and the adhesive layer 16 to form the groove 17 in a portion of the buffer film 15 as well.
  • Figure 10 is a plan view illustrating a printing sheet in accordance with yet another embodiment of the present invention.
  • the printing sheet in accordance with the present embodiment can be the same as that desirbed in Figures 1 to 4.
  • the groove 17 can be formed at regular intervals in a front surface of the printing sheet 10.

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  • Laminated Bodies (AREA)
  • Printing Methods (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

A printing sheet and a printing roller including the printing sheet are disclosed. In accordance with an embodiment of the present invention, the printing sheet includes a base film, an adhesive layer and a printing layer that are sequentially layered. Here, the printing sheet is formed with a groove, which is formed in at least a portion of the printing layer. Also, the printing roller includes a roller support and a printing sheet. Here, the printing sheet includes a base film, an adhesive layer and a printing layer that are sequentially layerd, and the printing sheet is formed with a groove, which is formed in at least a portion of the printing layer.

Description

PRINTING SHEET AND PRINTING ROLLER INCLUDING PRINTING SHEET
The present invention is related to a printing sheet, more specifically to a printing sheet and a printing roller including the printing sheet.
With the development of various mobile electironic devices, such as mobile phones, PDAs and laptop computers, and home electronic appliances, such as TVs, there has been an increasing demand for a thiner and smaller flat panel display device (FPD). For the thinner and smaller flat panel display device, liquid crystal display (LCD) devices, plasma display panel (PDP) devices, field emission display (FED) devices and vacuum fluorescent display (VFD) devices have been actively researched.
The flat panel display device can be manufactured by way of offset printing, of which the manufacturing process is simple and the production cost is low.
In the offset printing, however, the tensile force applied to a printing layer can vary while the printing layer rotates, because of the difference between the inner diameter and the outer diameter, thereby changing the length of the printing layer. This makes it difficult to repeatedly print a pattern, formed on the printing layer, in a certain coordinate area.
The present invention provides a printing sheet and a printing roller including the printing sheet that can allow printing to be performed repeatedly in a certain coordinate area.
An aspect of the present invention features a printing sheet. The printing sheet includes a base film, an adhesive layer and a printing layer that are sequentially layered. Here, the printing sheet is formed with a groove, which is formed in at least a portion of the printing layer.
The groove can be extended to a portion of the adhesive layer passing through the printing layer. The adhesive layer can include an elastomer. The elastomer can include a silicon adhesive. The printing layer can include a plurality of printing parts, and the printing sheet can further include a sheet connection unit, which is formed in between the plurality of printing parts. The sheet connection unit can include a silicon adhesive.
Another aspect of the present invention features a printing roller having a printing sheet. The printing roller in accordance with an embodiment of the present invention includes a roller support and a printing sheet. Here, the printing sheet includes a base film, an adhesive layer and a printing layer that are sequentially layerd, and the printing sheet is formed with a groove, which is formed in at least a portion of the printing layer.
The groove can be extended to a portion of the adhesive layer passing through the printing layer. The groove can be formed in a perpendicular direction of a tensile force to be applied to the printing sheet during the printing process.
The adhesive layer can include an elastomer. The elastomer can include a silicon adhesive. The printing layer can include a plurality of printing parts, and the printing sheet can further include a sheet connection unit, which is formed in between the plurality of printing parts. The sheet connection unit can include a silicon adhesive.
Since the tensile force applied to a printing layer can be removed by a groove formed in a printing sheet, a fold can be prevented from occurring. As a result, misalignment can be prevented, and a pattern formed in a printing roller can be copied on a certain portion of a print surface.
In addition, since an adhesive layer is little varied by laterial stress, the printing layer can be effectively prevented from being folded by stress generated on either side of a contact point between the printing sheet and the print surface.
Figures 1 to 4 are cross-sectional views illustrating a method of manufacturing a printing sheet in accordance with an embodiment of the present invention.
Figure 5 is a cross-sectional view illustrating a structure of a printing sheet in accordance with an embodiment of the present invention.
Figure 6 is a plan view illustrating a structure of a printing sheet in accordance with an embodiment of the present invention.
Figure 7 is a cross-sectional view illustrating a structure of a conventional printing roller.
Figure 8 is a cross-sectional view illustrating a structure of a printing roller in accordance with an embodiment of the present invention.
Figure 9 is a cross-sectional view illustrating a printing sheet in accordance with another embodiment of the present invention.
Figure 10 is a plan view illustrating a printing sheet in accordance with yet another embodiment of the present invention.
Hereinafter, certain embodiments of the present invention will be described in more detail through the below description with reference to the accompanying drawings. This, however, is by no means to restrict the present invention to these embodiments, and shall be construed as including all permutations, equivalents and substitutes covered by the spirit and scope of the present invention. In the drawings, the thicknesses of layers and areas are exaggerated for clarity. Throughout the description, similar elements are given similar reference numerals.
Figures 1 to 4 are cross-sectional views illustrating a method of manufacturing a printing sheet in accordance with an embodiment of the present invention.
Referring to Figure 1, a base film 12 is provided. The base film 12 can be made of a material that can be stretched. More specifically, the base film 12 can be a polyethyleneterephthalate (PET) film.
Referring to Figure 2, a printing layer 14 is provided. The printing layer 14 can be a layer on which an ink pattern is formed. The ink pattern formed on the printing layer 14 can be copied on a print surface such as a substrate or paper. The printing layer 14 can be a silicon layer.
Referring to Figure 3, an adhesive layer 16 can be interposed between the base film 12 and the printing layer 14.
The base film 12 and the printing layer 14 can be coupled to each other without being separated from each other by the adhesive layer 16. The adhesive layer 16 can be formed by coating an adhesive on a surface between the base film 12 and the printing layer 14 and then hardening the adhesive. The adhesive layer 16 can be made of a material that is little varied by stress, more specifically by laterial stress. The adhesive layer 16 can be an elastomer. More specifically, the adhesive layer 16 can be a silicon adhesive.
The silicon adhesive can be manufactured by mixing 0.5 to 5 % ofcrosslinkerbyweightinto95to99.5%ofsilicon-contatiningpolymerbyweight.
In one example, the silicon-containing polymer can be manufactured by mixing 60 % of methylate silica by weight into 40 % of polydimethyl siloxane-containing polymer by weight.
The polydimethyl siloxane-containing polymer can be polydimethyl siloxane polymer itself or a mixture of polydimethyl siloxane polymer and hydroxy terminated polymer.
The crosslinker can promote the crosslinking of polydimethyl siloxane contained in the silicon polymer. Specifically, the hardenercrosslinkercanbebenzoylperoxide,2,4-dichlorobenzoylperoxideorepoxysilaneortitanium,platinum
Referring to Figure 4, a groove 17 can be formed in at least a portion of the printing layer 14. Here, the groove 17 can be extended so that it can be also formed in an upper portion of the adhesive layer 16.
Furthermore, a plurality of fastening holes 18 can be formed at both ends of the printing sheet.
Figure 5 is a cross-sectional view illustrating a structure of a printing sheet in accordance with an embodiment of the present invention.
Referring to Figure 5, a printing sheet 10 having the base film 12, the adhesive layer 16 and the printing layer 14 can include a plurality of printing parts 14a and 14b. A sheet connection unit 19 can be formed in between the printing parts 14a and 14b. Here, the sheet connection unit 19 can be extended so that it can be also formed in a portion of the adhesive layer 16.
The sheet connection unit 19 can function to connect the plurality of printing parts 14a and 14b to one another if the printing sheet 10 is made large. The sheet connection unit 19 can be formed by first coating an adhesive on a surface in between the plurality of printing parts 14a and 14b and then curing the adhesive. The sheet connection unit 19 can be an elastomer. More specifically, the elastomer can be a silicon adhesive.
Since the sheet connection unit 19 has a property of strong adhesion, the sheet connection unit 19 can prevent each printing sheet from being separated from another printing sheet by stress generated during a printing process.
Figure 6 is a plan view illustrating a structure of a printing sheet in accordance with an embodiment of the present invention. The cross-sections of Figures 4 and 5 correspond to transverse sections I-I' and Ⅱ-Ⅱ' of Figure 3, respectively.
Referring to Figures 4, 5 and 6, the groove 17 can be formed in a perpendicular direction of a tensile force that will be applied to the printing sheet 10 during a printing process using the printing sheet 10. More specifically, the groove 17 can be parallel to the direction of arrangement of the fastening holes 18.
The sheet connection unit 19 can be also interposed between at least two printing layers 14. By disposing the sheet connection unit 19 in between the printing layers 14 in a vertical or horizontal direction, the surface area of the printing layers 14 can be enlarged.
Figure 7 is a cross-sectional view illustrating a structure of a conventional printing roller.
Illustrated in Figure 7 are a roller support 2 and a printing layer 1, which is disposed on an outer surface of the roller suppot 2. A print pattern can be formed on the printing layer 1. In order to dispose the printing layer 1 on an outer surface of the roller support 2, a jig 4 can be connected to both ends of the printing layer 1.
While a printing process is performed using the conventional printing roller, a tensile force can be provided to the printing layer 1 by the jig 4. Here, the magnitude of the tensile force applied to either side of a contact point B at which the printing layer 1 and a print surface 3 make contact can vary, depending on the rotational direction of the roller support 2. Specifically, if the roller support 2 rotates in a clockwise direction, the tensile force F of the right portion C of the contact point B of the printing layer 1 can be smaller than the tensile force F of the left portion A of the contact point B, thus forming a fold in the right portion C of the contact point B of the printing layer 1. This can make it difficult to copy the pattern in the printing layer 1 on a certain portion of the print surface 3.
Figure 8 is a cross-sectional view illustrating a structure of a printing roller in accordance with an embodiment of the present invention.
Illustrated in Figure 8 are a roller support 24 and a printing sheet 10, which is disposed on an outer surface of the roller support 24. The printing sheet 10 can be the same as what has been described with reference to Figures 4, 5 and 6.
In order to dispose the printing sheet 10 on an outer surface of the roller support 24, a jig 22 can be connected to both ends of the printing sheet 10. The jig 22 can be fastened to the plurality of fastening holes 18 (refer to Figure 4), which are formed at both ends of the printing sheet 10, by using a fixing member. The fixing member can be a bolt or rivet.
Since a tensile force applied to the printing sheet 10 can be removed by the groove 17 formed in the printing sheet 10, a fold that is described by referring to Figure 7 can be prevented from occurring. With this configuration, misalignment can be prevented, and a pattern formed in the printing roller can be copied on a certain portion of a print surface 30.
In addition, since the adhesive layer 16 is little varied by laterial stress, the printing layer 14 can be effectively prevented from being folded by stress generated on either side of a contact point B between the printing sheet 10 and the print surface 30.
Figure 9 is a cross-sectional view illustrating a printing sheet in accordance with another embodiment of the present invention. Other than what is described below, the printing sheet in accordance with the present embodiment can be manufactured by using the same method as that of the printing sheet described in Figures 1 to 4.
Referring to Figure 9, a printing sheet of the present embodiment can include, in the order of, a base film 12, an adhesive layer 16 and a printing layer 14, and can further include a buffer film 15, which is interposed between the adhesive layer 16 and the printing layer 14.
The buffer film 15 can be made of a material that has stronger adhesion between the buffer film 15 and the printing layer 14 and between the buffer film 15 and the adhesive layer 16 than direct adhesion between the printing layer 14 and the adhesive layer 16. The buffer film 15 can be a polyethyleneterephthalate (PET) film.
By disposing the buffer film 15 in the printing sheet, adhesion between the layers can be improved. That is, since the buffer film 15 is strongly coupled to the printing layer 14, the printing layer 14 can be prevented from being deformed during the printing process, thus improving the surface smoothness of the printing layer 14.
Furthermore, since the buffer film 15 is strongly coupled to the adhesive layer 16, the adhesive layer 16 can be prevented from being deformed during the printing process. With this configuration, the printing layer 14 can be further prevented from being folded by laterial stress.
In this embodiment, the printing sheet further including the buffer film 15 can include the groove 17, which is formed in a portion of the printing layer 14 or extended to the printing layer 14 and the adhesive layer 16 to form the groove 17 in a portion of the buffer film 15 as well.
Figure 10 is a plan view illustrating a printing sheet in accordance with yet another embodiment of the present invention. Other than what is described below, the printing sheet in accordance with the present embodiment can be the same as that desirbed in Figures 1 to 4.
Referring to Figure 10, the groove 17 can be formed at regular intervals in a front surface of the printing sheet 10.
While the spirit of the invention has been described in detail with reference to particular embodiments, the embodiments are for illustrative purposes only and shall not limit the invention. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the invention. As such, many embodiments other than those set forth above can be found in the appended claims.

Claims (13)

  1. A printing sheet comprising a base film, an adhesive layer and a printing layer that are sequentially layered, the printing sheet being formed with a groove in at least a portion of the printing layer.
  2. The printing sheet of claim 1, wherein the groove is extended to a portion of the adhesive layer passing through the printing layer.
  3. The printing sheet of claim 1, wherein the adhesive layer comprises an elastomer.
  4. The printing sheet of claim 3, wherein the elastomer comprises a silicon adhesive.
  5. The printing sheet of claim 1, wherein the printing layer comprises a plurality of printing parts, and the printing sheet further comprises a sheet connection unit formed in between the plurality of printing parts.
  6. The printing sheet of claim 5, wherein the sheet connection unit comprises a silicon adhesive.
  7. A printing roller comprising:
    a roller support; and
    a printing sheet,
    wherein the printing sheet comprises a base film, an adhesive layer and a printing layer that are sequentially layered, and the printing sheet is formed with a groove in at least a portion of the printing layer.
  8. The printing roller of claim 7, wherein the groove is extended to a portion of the adhesive layer passing through the printing layer.
  9. The printing roller of claim 7, wherein the groove is formed in a perpendicular direction of a tensile force to be applied to the printing sheet during a printing process.
  10. The printing roller of claim 7, wherein the adhesive layer comprises an elastomer.
  11. The printing roller of claim 10, wherein the elastomer comprises a silicon adhesive.
  12. The printing roller of claim 7, wherein the printing layer comprises a plurality of printing parts, and the printing sheet further comprises a sheet connection unit formed in between the plurality of printing parts.
  13. The printing roller of claim 12, wherein the sheet connection unit comprises a silicon adhesive.
PCT/KR2010/000524 2009-02-18 2010-01-28 Printing sheet and printing roller including printing sheet WO2010095818A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020090013527A KR101045039B1 (en) 2009-02-18 2009-02-18 Printing sheet and printing roller including the printing sheet
KR10-2009-0013527 2009-02-18

Publications (2)

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WO2010095818A2 true WO2010095818A2 (en) 2010-08-26
WO2010095818A3 WO2010095818A3 (en) 2010-10-28

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KR (1) KR101045039B1 (en)
TW (1) TW201036821A (en)
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4611539A (en) * 1985-09-30 1986-09-16 Carl Ireton Device and method for the precision mounting of flexible printing plates
JPS61286134A (en) * 1985-06-13 1986-12-16 Asahi Shinbunsha:Kk Mounting device for printing plate
US4727806A (en) * 1985-08-26 1988-03-01 Wilson Engraving Company, Inc. Pin register system for flexographic printing plates
JPH11177213A (en) * 1997-12-09 1999-07-02 T & M Kk Method and apparatus for manufacturing printed wiring board
JPH11321064A (en) * 1998-05-20 1999-11-24 Dainippon Printing Co Ltd Manufacture of decorative plate with grooves

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5209163A (en) 1986-02-07 1993-05-11 R. R. Donnelley & Sons Company Printing cylinder with retractable plate register pin and method of assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61286134A (en) * 1985-06-13 1986-12-16 Asahi Shinbunsha:Kk Mounting device for printing plate
US4727806A (en) * 1985-08-26 1988-03-01 Wilson Engraving Company, Inc. Pin register system for flexographic printing plates
US4611539A (en) * 1985-09-30 1986-09-16 Carl Ireton Device and method for the precision mounting of flexible printing plates
JPH11177213A (en) * 1997-12-09 1999-07-02 T & M Kk Method and apparatus for manufacturing printed wiring board
JPH11321064A (en) * 1998-05-20 1999-11-24 Dainippon Printing Co Ltd Manufacture of decorative plate with grooves

Also Published As

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KR20100094209A (en) 2010-08-26
KR101045039B1 (en) 2011-06-29
WO2010095818A3 (en) 2010-10-28
TW201036821A (en) 2010-10-16

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