CN102029784A - Solvent absorber - Google Patents
Solvent absorber Download PDFInfo
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- CN102029784A CN102029784A CN2010102816868A CN201010281686A CN102029784A CN 102029784 A CN102029784 A CN 102029784A CN 2010102816868 A CN2010102816868 A CN 2010102816868A CN 201010281686 A CN201010281686 A CN 201010281686A CN 102029784 A CN102029784 A CN 102029784A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2200/00—Printing processes
- B41P2200/10—Relief printing
- B41P2200/13—Offset printing
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- Printing Plates And Materials Therefor (AREA)
Abstract
The invention discloses a novel solvent absorber which requires no frequent exchanging and solvent removal, thus shortening printing period and increasing productivity. The base materials of the solvent absorber is provided with an absorbing layer for absorbing and removing solvent soaked in an organosilicon printing pad through contacting with the surface thereof. The absorbing layer is configured to consist of a surface layer which constitutes the surface which contacts with the surface of the organosilicon printing pad and a stacked structure of more than two layers, wherein the swelling rate of the solvent is higher than the layer (lower layer) of the surface layer, and the stacked structure is disposed closer to the base materials than the surface layer.
Description
Technical field
The present invention relates to a kind of solvent absorber, its printing ink that supports on organosilicon printing blanket (silicone blanket) surface is transferred to the surface that is printed body, and in the printing process of the predetermined pattern that above-mentioned surface printing is formed by above-mentioned printing ink, be used for absorption and remove to contain being immersed in described organosilicon printing blanket solvent, wherein said solvent is contained in the above-mentioned printing ink.
Background technology
Offset printing method has simply and can efficiently form the advantage of ink logo in a large number and at an easy rate with few operation number, and, seeking to improve printing precision in recent years, so especially it is applied in continuous expansion in person in electronics always.For example, form in the field of fine and pattern with high precision at the pattern of the pattern of electric wiring and fluorophor or this generic request of various patterns in the constituent part of Plasmia indicating panel (PDP) and display panels (LCD) etc., above-mentioned offset printing method replaces and utilizes existing photolithographic image to form to popularize.
In the offset printing method, the printing ink transfer printing that will form pattern on the surface of version is behind printing blanket (blanket) surface, and transfer printing is as being printed the substrate surface of body again, thus at the pattern of the surface printing regulation of aforesaid substrate.Be extensive use of its surface at least by the organosilicon printing blanket that forms for the good organic silicon rubber of the release property of printing ink or organic siliconresin as printing blanket.
The organosilicon printing blanket is owing to contact repeatedly with printing ink, particularly when being printed body the material of lyosoption not forming by glass substrate etc., in printing process repeatedly, with the solvent that comprises in the above-mentioned printing ink of impregnation, above-mentioned organosilicon printing blanket is swelling gradually, thereupon, the wettability for the organosilicon printing blanket surface of printing ink rises gradually.So, continue to maintain high level between being difficult to run through for a long time from the printing initial stage printing precision.
Can think that if use the printing ink that contains the low wettability solvent that can make organic silicon rubber and organic siliconresin swelling hardly, even printing repeatedly, above-mentioned wettability also changes hardly, so can carry out stable printing.But, contain the printing ink that hangs down the wettability solvent, since low from the surface of version to the acceptance on organosilicon printing blanket surface, especially in the pattern of fine rule, be easy to generate broken string.
Broken string is one of the unfavorable condition that must avoid, in order to prevent broken string, must use can make the to a certain degree solvent of swelling of organosilicon printing blanket.But when using the printing ink contain above-mentioned solvent to print repeatedly, the organosilicon printing blanket is swelling gradually, and the wettability of printing ink is risen gradually, and release property reduces gradually.And, along with the rising of the wettability printing ink that becomes infiltrates easily, especially the live width of the pattern of fine rule broadens gradually, or cause the tiny stain on version surface to be transferred, and, thereby the precision of printing is reduced gradually along with lowering gradually to the transfer printing of substrate of the reduction printing ink of release property from the organosilicon printing blanket.
It is also conceivable that the method for organosilicon printing blanket heating being removed the solvent after the swelling.But, be necessary the organosilicon printing blanket is heated to general about 40～200 ℃, and the high organosilicon printing blanket of surface temperature after will heating is when contact with version for this reason, there be above-mentioned edition thermal expansion and make the such problem of printing precision reduction.Also proposed by the solvent absorber with lyosoption function is contacted with the surface of organosilicon printing blanket, the solvent that makes institute's impregnation in the above-mentioned organosilicon printing blanket shifts and with the method for its removal (with reference to patent documentation 1,2 etc.) to the solvent absorber.According to this method, do not heat the organosilicon printing blanket and just can remove solvent, so printing precision can be maintained high level.Each time or implement to utilize the removal of solvents of solvent absorber after the printing for several times.
The solvent absorber that uses in said method generally is to constitute at the folded individual layer absorbed layer that is formed by organic silicon rubber that roughly is equal to organosilicon printing blanket surface or organic siliconresin of at least one surface layer of base material.
Patent documentation 1: the spy opens flat 8-156388 communique
Patent documentation 2: the spy opens the 2009-119709 communique
But, the absorbed layer of above-mentioned solvent absorber in the past also roughly is equal to the organosilicon printing blanket the absorption easiness of solvent, only come lyosoption based on the concentration difference of the solvent of institute's impregnation, so carrying out repeatedly contacting and in the operating process of lyosoption with the surface of organosilicon printing blanket, there is the tendency that is difficult to lyosoption gradually in the solvent swelling of absorbed layer self meeting because of being absorbed.
Therefore, for example can consider to preestablish the access times of solvent absorber, the solvent absorber that when reaching the access times of regulation, more renews etc.
Specifically, carried out following research: be wound into web-like after for example the solvent absorber being formed rectangular band shape, the specific length zone of the solvent absorber that will extract out from above-mentioned volume contacts the also operation of lyosoption with the surface of organosilicon printing blanket, on identical zone, carry out once or several, and, whenever carry out the operation of afore mentioned rules number of times, just from above-mentioned volume, extract the new zone of solvent absorber out, similarly be used for solvent absorption etc.
In addition, also studied the solvent absorber has been formed endless band, whenever carry out once or when making for several times above-mentioned solvent absorber rotation, its surface with the organosilicon printing blanket is contacted and the operation of lyosoption, just the solvent absorber is heated etc. and remove the solvent that is absorbed, simultaneously above-mentioned solvent absorber is used for repeatedly solvent and absorbs.
But, no matter carry out any operation, also must stop printing during this, therefore frequently carry out these operations, the cycle time of offset printing method, promptly substrate and just elongated more needed average time to new substrate is set after the surface printing printing ink of aforesaid substrate forms pattern according to previously described order is being set on the offset press on offset press, is causing the problem of the productivity step-down of the product made by offset printing method.
In addition, as the above-mentioned operation of frequently changing solvent absorber or heating and removing solvent, from saving resource, saving viewpoint of energy and consider also preferred anything but.
Summary of the invention
The objective of the invention is to, a kind of novel dissolvent absorber is provided, it is compared with the past to need not frequently to change and the removal of solvents operation, improves the productivity of product so can shorten the cycle time of described printing.
The present invention is a kind of solvent absorber, possess the base material of membranaceous or sheet and the absorbed layer that forms in the one side at least of described base material, be used for contacting with the surface of organosilicon printing blanket to utilize described absorbed layer to absorb and remove containing the solvent that is immersed in described organosilicon printing blanket by the surface that makes described absorbed layer, wherein said solvent is contained in the printing process of having used described organosilicon printing blanket in the employed printing ink, it is characterized in that, described absorbed layer is configured to comprise the top layer that constitutes described surface in interior stepped construction more than two-layer, and is higher than the layer on described top layer at the swelling ratio that more is equipped with described solvent by base material one side than described top layer.
Swelling ratio be the specified layer that forms by rubber or resin of expression from fully not the drying regime of lyosoption begin the quantity of solvent that can absorb within a certain period of time, promptly, represent that this layer has the index of the ability that absorbs how many solvents from drying regime, swelling ratio is high more, the ability of this layer lyosoption is just excellent, and just expression can absorb more solvent within a certain period of time.
The inventor studies the back and finds, the two-layer laminate that above-mentioned swelling ratio is different, and when low that layer impregnation solvent of wherein swelling ratio, the phenomenon that the solvent that impregnation can take place moves based on the difference of described swelling ratio and to the high layer of above-mentioned swelling ratio.
The present invention has utilized this phenomenon just, as above-mentioned, absorbed layer is to comprise the top layer in interior two-layer above stepped construction, and the layer that is higher than described top layer at the swelling ratio that more leans on base material one side (downside) to be equipped with solvent than described top layer, so the major part of the solvent that moves to absorbed layer from the organosilicon printing blanket in the operation that solvent absorbs can not be deposited in described top layer, move to the layer of downside based on the difference of described swelling ratio.
Therefore, can be continued to maintain the state of the few easy lyosoption of the impregnation amount of solvent the surperficial long period as the top layer on absorbed layer surface, the frequency of carrying out of changing and remove the solvent operation that reduced compared with the past has shortened time print cycle, thereby can improve the productivity of product.
In addition, swelling ratio uses the value of carrying out following mensuration and trying to achieve under the environment of 23 ± 1 ℃ of room temperatures, relative humidity 55 ± 1% to represent in the present invention.
That is, at first utilize with each layer (top layer etc.) identical materials that constitutes absorbed layer and make sample respectively, measure the quality W under the drying regime of lyosoption not fully of above-mentioned sample
1After, flood and left standstill 2 hours in the integral body of sample the mode in the contained solvent of the printing ink of actual use of being soaked in.
Then, measure the quality W of the sample after from solvent, taking out immediately
2, utilize following formula (1) to obtain the mass change that produces because of solvent swell, i.e. swelling ratio (%).
Swelling ratio (%)=[(W
2-W
1)/W
1] * 100 (1)
Absorbed layer preferably is configured to swelling ratio by described top layer and solvent and is higher than the double-layer structure that the lower floor on described top layer constitutes.Thus, simplified structure and improve the productivity of solvent absorber as much as possible.
In addition, above-mentioned top layer preferably utilizes and forms the organic silicon rubber or the organic siliconresin formation of the surperficial identical type of organosilicon printing blanket.Thus, the adaptation on the surface of absorbed layer surface and organosilicon printing blanket is improved, utilize above-mentioned absorbed layer as far as possible successfully to absorb and remove to contain the solvent that is dipped in the above-mentioned organosilicon printing blanket.
In addition, can prevent that the surface of organosilicon printing blanket from contacting and contaminated with kinds of materials, it is constant that above-mentioned surface state is remained.
According to the present invention, compared with the pastly need not frequently to change and removal of solvents operation the productive novel dissolvent absorber that has improved product so can be provided the cycle time that shortens described printing.
The specific embodiment
The present invention is a kind of solvent absorber, possess the base material of membranaceous or sheet and the absorbed layer that forms in the one side at least of described base material, be used for contacting with the surface of described organosilicon printing blanket to utilize described absorbed layer to absorb and remove being contained in the employed printing ink of printing process that has used the organosilicon printing blanket by the surface that makes described absorbed layer, contain the solvent that is dipped into above-mentioned organosilicon printing blanket, it is characterized in that, described absorbed layer is configured to comprise the top layer that constitutes described surface in interior stepped construction more than two-layer, and is higher than the layer on described top layer at the swelling ratio that more is equipped with described solvent by base material one side (downside) than described top layer.
Top layer in the described absorbed layer is formed by organic silicon rubber or organic siliconresin (following be referred to as sometimes " organic silicon rubber etc. ").Thus, improved the adaptation to organosilicon printing blanket surface on absorbed layer surface, utilized above-mentioned absorbed layer as far as possible successfully to absorb and remove to contain the solvent that is dipped in the above-mentioned organosilicon printing blanket.The surface that can prevent the organosilicon printing blanket contacts and contaminated with kinds of materials, and it is constant that above-mentioned surface state is remained.
The layer that constitutes the downside of absorbed layer with above-mentioned top layer can be an individual layer, or two-layer above multilayer, but individual layer preferably.That is, be the lower floor of above-mentioned individual layer and the top layer double-layer structure on it by making absorbed layer, simplified structure and improve the productivity of solvent absorber as far as possible.
Described lower floor preferably utilizes the formation such as organic silicon rubber with the top layer identical type.Thus, can improve the adaptation of above-mentioned two interlayers, the solvent that absorbs from the organosilicon printing blanket is successfully moved to lower floor from the top layer.In addition, make the solvent absorber follow the surface of organosilicon printing blanket for lyosoption and when having carried out crooked wait, also be difficult to peel off at two interlayers.
In addition, the top layer is preferably in the lower floor that forms on the base material, be coated with as described later be in a liquid state when uncured or the organic silicon rubber of pasty state etc. after, be cured the reaction and form, when but lower floor forms for utilizing organic silicon rubber of the same race etc., organic silicon rubber of above-mentioned liquid state etc. can be coated with as far as possible equably with non-involvement bubble etc. or the mode that do not produce shrinkage cavity etc. in above-mentioned lower floor.
And, can also prevent because the situation that the curing reaction of the organic silicon rubber etc. after the coating is hindered owing to same material not.So, can in above-mentioned lower floor, form excellent good top layer such as surperficial flatness, intensity.
For the swelling ratio that makes the solvent in the lower floor that forms by above-mentioned organic silicon rubber etc. than top layer height, the degree of cross linking of the organic silicon rubber that helps swelling etc. is made as in two interlayer differences, perhaps makes up and get final product as forming the above-mentioned two-layer different organic silicon rubber of the above-mentioned swelling ratio of selections such as organic silicon rubber.
Swelling ratio for top layer and lower floor is not particularly limited, but the swelling ratio on above-mentioned top layer is preferably more than 4%, and is special preferred 6%, and preferably less than 12%, special preferred below 10%.
When the swelling ratio on top layer was lower than above-mentioned scope, the scarce capacity of above-mentioned top layer self lyosoption may successfully absorb above-mentioned solvent and remove at short notice from organosilicon printing blanket surface.For this reason, need to prolong the required time that solvent absorbs operation, thereby make the effect of the cycle time that shortens printing become not enough.
On the other hand, when the swelling ratio on top layer surpassed above-mentioned scope, the ability of above-mentioned top layer self lyosoption was too high, was carrying out solvent repeatedly when absorbing operation, and organosilicon printing blanket surface may gradually become the state of solvent deficiency.Thus, reduce gradually from the printing ink acceptance of intaglio plate to organosilicon printing blanket surface, especially the pattern of fine rule exists live width can narrow down gradually on the contrary, perhaps produces the possibility of broken string.
In addition, the swelling ratio of lower floor still is preferably more than 12% than high the getting final product of swelling ratio on above-mentioned top layer, be preferably more than 14% especially, and preferred below 18%, preferred especially below 16%.
When the swelling ratio of lower floor is lower than above-mentioned scope, though also relevant with the swelling ratio on the top layer of lower floor combination, reduce with the difference of the swelling ratio on above-mentioned top layer, possibly above-mentioned difference based on swelling ratio can't be contained the solvent that is dipped in the top layer and successfully move to lower floor.For this reason, continue to maintain the frequency of carrying out that the few and state that be easy to lyosoption of the impregnation amount of solvent reduces replacing, removal of solvents operation by the surperficial long period with the top layer, it is not enough that the effect that shortens the cycle time of printing thus may become.
In addition, the high lower floor of swelling ratio that swelling ratio surpasses above-mentioned scope will produce necessity of frequent replacing because of undercapacity, may make the effect of the cycle time that shortens printing become not enough.
In addition, the swelling rate variance of top layer and lower floor is preferably more than 3 percentage points, be preferably especially more than 5 percentage points, and preferred below 11 percentage points, preferred especially below 9 percentage points.
During above-mentioned scope that the difference of swelling ratio is not enough, the difference of the swelling ratio of two interlayers reduces, and the solvent that possibly can't make impregnation successfully moves to lower floor based on the difference of above-mentioned swelling ratio.For this reason, continue to maintain the frequency of carrying out that the few and state that be easy to lyosoption of the impregnation amount of solvent reduces replacing, removal of solvents operation by the surperficial long period with the top layer, it is not enough that the effect that shortens the cycle time of printing thus may become.
In addition, want to make up the top layer and the lower floor that exceed above-mentioned scope, will make the swelling ratio on top layer be lower than above-mentioned preferable range, and perhaps make the swelling ratio of lower floor surpass above-mentioned preferred range, so that a kind of situation all might make the effect of the cycle time that shortens printing become not enough.
As the organic silicon rubber that constitutes above-mentioned top layer and lower floor etc., be in a liquid state when preferred uncured as previously described or the organic silicon rubber of pasty state.
Lower floor can use scraper, rod to be coated with the mode with the thickness that becomes regulation such as machine, roll coater, is in a liquid state or after the organic silicon rubber of pasty state etc. is coated on the base material, is solidified to form above-mentioned.At this moment, can utilize so-calledly, make the surface of filming that becomes above-mentioned subfoundation, the i.e. surface smoothingization of the lower floor after solidifying, and make the thickness homogenization of above-mentioned lower floor from the levelling effect.
In addition, the top layer can use scraper, rod to be coated with the mode with the thickness that becomes regulation such as machine, roll coater equally, is in a liquid state or after the organic silicon rubber of pasty state etc. is coated on the base material, is solidified to form above-mentioned.At this moment, still can utilize so-calledly, make the surface of filming that becomes basis, above-mentioned top layer, the i.e. surface smoothingization on the top layer after solidifying, and make the thickness homogenization on above-mentioned top layer from the levelling effect.
For this reason, can without operations such as grinding and productivity make well can be with the surface driving fit seamlessly of organosilicon printing blanket lyosoption, surface smoothing excellent solvent absorber.Certainly, also can grind the surface on lower floor and top layer as required.
In addition, lower floor also can be by making above-mentioned be in a liquid state or the injections such as organic silicon rubber of pasty state have corresponding to the figuration face of surface configuration and installed in the mould of base material, is cured and forms.The top layer equally also can be by making above-mentioned be in a liquid state or the injections such as organic silicon rubber of pasty state have corresponding to the figuration face of surface configuration and installed in the mould of base material, is cured and forms.
As above-mentioned organic silicon rubber etc., preferred room temperature curing type (RTV).Because the organic silicon rubber of above-mentioned room temperature curing type is like its title, just do not heat and to solidify down in room temperature (5～35 ℃), therefore, can simplify the manufacturing process of solvent absorber and the equipment that is used to make, and, because the contraction when expansion that causes without heating and cooling, therefore, can improve lower floor, top layer and as the thickness and precision of the absorbed layer of two-layer duplexer.
In addition, as above-mentioned organic silicon rubber etc., as illustrated before, the organic silicon rubber of the two liquid addition reaction-types that preferably constitute and can solidify by the two addition reaction by host and two kinds of compositions of curing agent.
Because the organic silicon rubber of above-mentioned two liquid addition reaction-types etc. does not produce accessory substance (water that is produced by dehydration condensation etc.) when curing reaction, therefore, can improve uniform lower floor and the top layer that the dimensional accuracy on lower floor, top layer and forming does not contain bubble of producing because of above-mentioned accessory substance etc.
As liquid organosilicon rubber of above-mentioned room temperature curing type and two liquid add-on types etc., for example can enumerate: production number KE1600, KE1603, KE1606, KE1310ST, KE1300T, KE1314, KE1241, KE106, the KE103 of SHIN-ETSU HANTOTAI's chemical industry (strain) system, production number TSE3402, the TSE3453 of MomentivePerformance Materials corporate system, TSE3455T, TSE3457, TSE3466 etc.
By the absorbed layer of the two-layer double-layer structure that constitutes of above-mentioned top layer and lower floor, perhaps more than the preferred 0.01mm of the thickness of the integral body of the absorbed layer of the sandwich construction more than 3 layers, below the 1mm.
The thin absorbed layer of the not enough above-mentioned scope of thickness can't absorb the solvent of q.s, therefore may cause reducing the effect change deficiency of changing the solvent absorber or shortening the cycle time of printing through the frequency of the operation of the heating removal solvent of etc.ing.
In addition, when surpassing above-mentioned scope, reduce as the flexibility of solvent absorber integral body and the tracing ability that accompanies therewith organosilicon printing blanket surface, for example, on the surface of the organosilicon printing blanket that the state of the periphery that is wound in the printing blanket main body etc. uses, possibly can't carry out the absorption of solvent with the state that as far as possible seamlessly contacts above-mentioned absorbed layer.
In addition, also have the weight of absorbed layer to increase, thereby reduce the operability when contact with organosilicon printing blanket surface as described above, perhaps base material is easy to generate the possibility of fold by bending when aforesaid operations.
When described absorbed layer during by two-layer formation of top layer and lower floor, above-mentioned two-layer thickness can be set arbitrarily, but especially preferably with the thickness T of lower floor
UBe set at the thickness T on top layer
SMore than (T
U〉=T
S).Thus, lower floor can absorb more solvent, and it is few and be easy to the state of lyosoption to make the surface on top layer continue to maintain the impregnation amount of solvent as far as possible for a long time.In addition, can make the solvent that absorbs from organosilicon printing blanket surface waltz through above-mentioned top layer and contain and be dipped into the lower floor.
But, when the thickness on top layer is too small, when the surface on above-mentioned top layer is contacted with the surface of organosilicon printing blanket, because of its contact pressure etc. may contain the surface that the solvent that is immersed in the lower floor can turn back to the top layer, obstruction perhaps increases the situation of the solvent impregnation amount in the organosilicon printing blanket on the contrary from organosilicon printing blanket lyosoption.For this reason, the thickness on top layer is preferably more than the 0.005mm, more than the preferred especially 0.008mm.
About the hardness of absorbed layer integral body, consider and follow organosilicon printing blanket surface and contact with it seamlessly well, preferably equal or below it with the case hardness of above-mentioned organosilicon printing blanket.
Be set in for hardness below the hardness on organosilicon printing blanket surface absorbed layer integral body, for example as the organic silicon rubber on the basis of each layer that constitutes absorbed layer etc., the hardness after selecting to solidify all is equal to the hardness on organosilicon printing blanket surface or the organic silicon rubber below it gets final product.Thus, can make the surface of hardness ratio organic silicon rubber of absorbed layer softer.
The concrete scope of hardness that becomes each layer on absorbed layer basis is, need only below the hardness on organosilicon printing blanket surface as above-mentioned, be not particularly limited, preference as the A type hardness tester scale of hardness in regulation among the JIS JIS K6253:2006 " vulcanized rubber and thermoplastic elastomer-hardness ask method " be shown A5/S above, below the A50/S, be preferably the degree that A10/S is above, A30/S is following especially.
In addition, in order there not to be the surface of gap driving fit at the organosilicon printing blanket, the surface of preferred absorbed layer mesexine is level and smooth as far as possible.But because absorbed layer is soft as described above, therefore, even smooth like that not as organosilicon printing blanket surface, also driving fit fully seamlessly is on above-mentioned surface.
The concrete scope of the surface roughness on above-mentioned surface is not particularly limited, preferably 10 mean roughness Rz that stipulate in the attached book 1 with JIS JIS B0601:2001 " geometrical property explanation (the GPS)-surface texture of product: contour curve mode-term, definition and surface texture parameter "
JIS94Be expressed as more than the 0.01 μ m, below the 5 μ m, be preferably the degree that 0.05 μ m is above, 1 μ m is following especially.
When the layer of the downside on top layer is a multilayer more than 2 layers, the mechanism that moves for the solvent of bringing into play as far as possible smoothly and well in preceding explanation, preferably the top layer at least in above-mentioned multilayer under set the swelling ratio layer higher of above-mentioned solvent than above-mentioned top layer.
As base material, can enumerate the film of various resins or the thin plate of sheet and metal etc.Wherein, as the film or the sheet of resin, can enumerate: by PETG (PET), polyvinyl chloride, polyethylene, polypropylene, polystyrene and copolymer thereof, Vingon, polyvinyl alcohol, fluorine resin, Merlon, cellulose acetate, polyamide, polyimides, Noryl, polysulfones, polyarylate, polyether sulfone, polyether-ether-ketone, PEI, polyphenylene sulfide, TPX polymer, and resin such as Parylene film or the sheet made.
In addition, as the thin plate of metal, the preferred thin plate that constitutes by metals such as copper or its alloy, aluminium or its alloy, stainless steel, nickel.
Preferred especially use is processed as film with PET of membranaceous or sheet and the excellent size stability of thickness and surface roughness arbitrarily or sheet easily as base material.
The thickness of base material is preferably more than the 0.05mm, is preferably more than the 0.1mm especially, is preferably below the 0.35mm, is preferably below the 0.25mm especially.
When thickness is lower than above-mentioned scope, can not obtain the effect that sufficient above-mentioned base material is kept solvent absorber integral intensity as the supporter of absorbed layer and guaranteed good operability, operation the time have base material to fracture easily or produce fold may.
In addition, surpass under the situation of above-mentioned scope at thickness, reduce as the flexibility of solvent absorber integral body and the tracing ability that accompanies with it organosilicon printing blanket surface, for example on the surface of the organosilicon printing blanket that the state of the periphery that is wound in the printing blanket main body etc. uses, may carry out the absorption of solvent with the state of the above-mentioned absorbed layer of driving fit as far as possible seamlessly.
In order to improve the adaptation of above-mentioned absorbed layer, can be to forming the surperficial embodiment such as the preliminary treatment such as plasma treatment, flame treatment of the base material before the absorbed layer, or form basalis arbitrarily.
The one side that absorbed layer can be formed at base material also can be formed at the two sides.The solvent absorber that is formed with absorbed layer on the two sides can overturn and the absorbed layer of reverse side is used for the absorption of solvent after absorbed layer that will one side is used for the absorption of solvent.
Above-mentioned solvent absorber can form shape arbitrarily corresponding to the structure of the printing machine of implementing printing process etc., and being preferably formed especially is banded (comprising endless band).Thus, can be directly used in the offset press of the above-mentioned banded equal solvent absorber of present use.
It is rectangular banded and be wound into web-like that the solvent absorber is formed, the specific length zone of the solvent absorber that will extract out from above-mentioned volume contacts the also operation of lyosoption with the surface of organosilicon printing blanket, on identical zone, carry out once to for several times, and, whenever carry out the operation of afore mentioned rules number of times, just from above-mentioned volume, extract the new zone of solvent absorber out, similarly be used for solvent and absorb.
In addition, can make the solvent absorber form endless band, whenever carry out once to making for several times above-mentioned solvent absorber rotation simultaneously, its surface with the organosilicon printing blanket is contacted and the operation of lyosoption, remove the solvent that absorbs with regard to heated solvent absorber etc., simultaneously above-mentioned solvent absorber is used for repeatedly solvent and absorbs.
And, under this any situation, because the absorbed layer of solvent absorber as described above, swelling ratio with top layer and solvent is higher than the stepped construction of the layer on above-mentioned top layer, therefore can be continued to maintain the state of the few and easy lyosoption of the impregnation amount of solvent the surperficial long period as the top layer on absorbed layer surface, the frequency of carrying out that can reduce the operation of replacing, removal of solvents compared with the past, thus can shorten the cycle time of printing and improve the productivity of product.
Described printing process of the present invention goes for using the various printing processes of organosilicon printing blanket, for example
(1) will be transferred to the surface of organosilicon printing blanket at the printing ink that the surface of versions such as intaglio plate, lithographic plate forms pattern after, be transferred to again offset printing method as the surface of the substrate that is printed body,
(2) by after whole the coating printing ink on the surface of organosilicon printing blanket, it is contacted with intaglio plate, thereby optionally the printing ink that will contact with the recess zone in addition of above-mentioned intaglio plate is from the surface removal of organosilicon printing blanket, the ink lay on above-mentioned surface is carried out after pattern forms, be transferred to the aforesaid substrate surface reversal printing method,
(3) ink logo directly is depicted in after the surface of organosilicon printing blanket, is transferred to the printing process on aforesaid substrate surface etc.
In above-mentioned various printing processes, can use above-mentioned solvent absorber to implement following operation, that is,, contact, contain the operation of the solvent that is dipped in above-mentioned organosilicon printing blanket with the surface of organosilicon printing blanket by above-mentioned solvent absorbent body and removal by making the solvent absorber at the intermittence of printing.Thus, can in long-time, make the precision of printing continue to maintain high level from the printing initial stage.
As the organosilicon printing blanket, the various organosilicon printing blankets that can use its surface at least to form by organic silicon rubber etc.Specifically preferably, as possess the base material of membranaceous or sheet and be formed at the organosilicon printing blanket of surface rubber layer one side, that constitute by the composition that comprises organic silicon rubber etc. at least of above-mentioned base material.
As the organic silicon rubber that constitutes above-mentioned surface rubber layer etc., preferred being in a liquid state when uncured or the organic silicon rubber or the organic siliconresin of the liquid state of pasty state.The organic silicon rubber of above-mentioned liquid state etc. for example use scraper, rod be coated with thickness according to the rules such as machine, roll coater be coated on the base material, when being solidified to form surface rubber layer, can utilize above-mentionedly to make the surface smoothingization of above-mentioned surface rubber layer, make the thickness homogenization from the levelling effect.Therefore, can be without operation such as grinding and productivity is made the organosilicon printing blanket well, it has and is applicable to and is forming the surface rubber layer fine and pattern with high precision, that surface smoothing is good as the surface that is printed the substrate of body.Certainly, also can grind the surface of surface rubber layer as required.
In addition, the organosilicon printing blanket also can be by being in a liquid state or the injections such as organic silicon rubber of pasty state have corresponding to the figuration face of surface rubber layer surface configuration and settled in the mould of base material above-mentioned, is cured and makes.
As above-mentioned organic silicon rubber etc., still preferred room temperature curing type (RTV).Because the organic silicon rubber of above-mentioned room temperature curing type etc. does not heat and can at room temperature solidify yet, therefore, can simplify the manufacturing process of organosilicon printing blanket and the equipment that is used to make, and, contraction during owing to expansion that causes without heating and cooling, therefore, can improve the thickness and precision of surface rubber layer.
In addition, as above-mentioned organic silicon rubber etc., preferred two liquid addition reaction-types that constitute, can be cured by the two addition reaction by host and two kinds of compositions of curing agent.
Because the organic silicon rubber of above-mentioned two liquid addition reaction-types etc. does not produce accessory substance (water that is produced by dehydration condensation etc.) when curing reaction, therefore, the dimensional accuracy of surface rubber layer can be improved, and the uniform surface rubber layer that does not contain bubble of producing because of above-mentioned accessory substance etc. can be formed.
As liquid organosilicon rubber of above-mentioned room temperature curing type and two liquid add-on types etc., for example can enumerate: production number KE1600, KE1603, KE1606, KE1310ST, KE1300T, KE1314, KE1241, KE106, the KE103 of above-mentioned SHIN-ETSU HANTOTAI chemical industry (strain) system, production number TSE3402, the TSE3453 of MomentivePerformance Materials corporate system, TSE3455T, TSE3457, TSE3466 etc.
The thickness of surface rubber layer especially requires to be preferably the degree that 0.01mm is above, 0.5mm is following under the situation of precision printing with the organosilicon printing blanket of high printing precision at the PDP of explanation before and the pattern of LCD etc.
As base material, can enumerate and the film of the congener various resins of base material that use or the thin plate of sheet or metal etc. in the solvent absorber of explanation before, especially preferably be processed as easily and have film or the sheet of the PET of membranaceous or sheet and the excellent size stability of thickness and surface roughness arbitrarily.
The thickness of base material is preferably the degree that 0.01mm is above, 0.4mm is following under the situation of above-mentioned accurate printing with the organosilicon printing blanket.
In order to improve the adaptation of above-mentioned surface rubber layer, can or form basalis arbitrarily to preliminary treatment such as the surperficial embodiment that forms the base material before the surface rubber layer such as plasma treatment, flame treatment.
The hardness of surface rubber layer is, represents in the A type hardness tester hardness of stipulating among the above-mentioned JIS K6253:2006, and preferred A10/S is above, below the A70/S, the degree that special preferred A30/S is above, A60/S is following.
In addition, because ink logo is fine more, the surface state of organosilicon printing blanket is big more to the influence of its precision, and is therefore, preferably smooth as far as possible.For example, above-mentioned accurate printing is preferably with the surface roughness of organosilicon printing blanket, with 10 mean roughness Rz of regulation in the attached book 1 of above-mentioned JIS B0601:2001 " geometrical property explanation (the GPS)-surface texture of product: contour curve mode-term, definition and surface texture parameter "
JIS94Expression is in the degree more than the 0.01 μ m, below the 1 μ m.
Embodiment
The manufacturing of following embodiment, the solvent absorber of comparative example, the mensuration of characteristic and test are all implemented under the environment of 23 ± 1 ℃ of temperature, relative humidity 55 ± 1% under the situation that is not having special instruction.
＜embodiment 1 〉
The liquid dimethyl base silicon rubber of mixed room temperature curing type and two liquid addition reaction-types [SHIN-ETSU HANTOTAI's chemical industry (strain) system KE1241] thus host 100 mass parts and curing agent 10 mass parts after carry out the coating fluid that deaeration preparation lower floor uses, using rod to be coated with machine above-mentioned coating fluid is coated on the one side as the PET film of the thickness 0.25mm of base material, at room temperature leaving standstill then and making its curing, formation thickness in 24 hours is the lower floor that the face direction of 0.4mm, PET film is of a size of vertical 60cm * horizontal 50cm.
Then, host 100 mass parts of the liquid dimethyl base silicon rubber of mixed room temperature curing type and two liquid addition reaction-types [KE1603 of SHIN-ETSU HANTOTAI's chemical industry (strain) system], thereby with carry out the coating fluid that deaeration preparation top layer is used after curing agent 100 mass parts, use rod to be coated with on the surface that machine is coated on the lower floor on the above-mentioned PET film above-mentioned coating fluid, at room temperature leave standstill then and made its curing in 24 hours, formation thickness is 0.1mm, the face direction of PET film is of a size of the top layer of vertical 60cm * horizontal 50cm, has made the solvent absorber that possesses the absorbed layer that has above-mentioned lower floor and top layer double-layer structure.
In addition, the identical coating fluid that uses when using with above-mentioned lower floor of formation and top layer is made the sample of each layer, adopt the method that illustrates previously to measure swelling amount to above-mentioned two samples as the acetate of butyl carbitol of solvent, the swelling amount of lower floor is 15% as a result, and the swelling amount on top layer is 8%.
Embodiment 2
The thickness that is made as 0.25mm, top layer except the thickness with lower floor is made as the 0.25mm, and all the other are identical with embodiment 1, thereby have made the solvent absorber with described lower floor and top layer double-layer structure.
Embodiment 3
The thickness that is made as 0.1mm, top layer except the thickness with lower floor is made as the 0.4mm, and all the other are identical with embodiment 1, thereby have made the solvent absorber with described lower floor and top layer double-layer structure.
Comparative example 1
Use rod to be coated with top layer that machine will be identical with the coating fluid of preparation among the embodiment 1 and be coated on one side as the PET film of the thickness 0.25mm of base material with coating fluid, at room temperature leaving standstill then it is solidified, is that the face direction of 0.5mm, PET film is of a size of vertical 60cm * solvent absorber horizontal 50cm, that have the single layer structure absorbed layer thereby made thickness.
Comparative example 2
Use rod to be coated with top layer that machine will be identical with the coating fluid of preparation among the embodiment 1 and be coated on one side as the PET film of the thickness 0.25mm of base material with coating fluid, at room temperature leaving standstill then it is solidified, is the lower floor that the face direction of 0.25mm, PET film is of a size of vertical 60cm * horizontal 50cm thereby formed thickness.
Then, use rod to be coated with machine will the lower floor identical with the coating fluid of preparation among the embodiment 1 be coated on the lower floor on the above-mentioned PET film with coating fluid surface, at room temperature leave standstill then and made its curing in 24 hours, thereby the face direction that has formed thickness and be 0.25mm, PET film is of a size of the top layer of vertical 60cm * horizontal 50cm, has made the solvent absorber that possesses the absorbed layer that has above-mentioned lower floor and top layer double-layer structure.
＜printing characteristic test 〉
(making of organosilicon printing blanket)
After host 91 mass parts and curing agent 9 mass parts of the liquid organosilicon rubber of mixed room temperature curing type and two liquid add-on types [the A type hardness tester meter hardness (is benchmark with JIS K6253:2006) after the curing is the liquid organosilicon rubber of A30/S], deaeration, the coating fluid that the preparation surface rubber layer is used, use rod to be coated with machine above-mentioned coating fluid and be coated on one side as the PET film of the thickness 0.25mm of base material, at room temperature leave standstill then and made its curing in 24 hours, form thickness 0.70mm, the face direction of PET film is of a size of the surface rubber layer of vertical 60cm * horizontal 50cm, thereby has made the organosilicon printing blanket.
(printing process)
The periphery that above-mentioned organosilicon printing blanket is wound on the printing blanket main body of intaglio plate offset press [the plate accurate printing machine of NAKAN Co., Ltd. system, 360mm * 460mm correspondence] is also fixed.In addition, as intaglio plate, use with clathrate and carry out the intaglio plate that pattern has formed the recess of live width 20 μ m, spacing 300 μ m, dark 8 μ m on the surface of glass plate.
Used with mylar, as the acetate of butyl carbitol of solvent and silver powder and the printing ink of preparation mixing as printing ink with three rollers.
In addition, the absorber of making in the various embodiments described above, the comparative example of solvent is arbitrarily installed in the following manner: two ends are joined and form endless band, rotate synchronously with the organosilicon printing blanket that is wound on above-mentioned printing blanket main body periphery to allow to one side, implement the operation that solvent absorbs Yi Bian be in contact with one another.The transporting velocity of the endless band when rotating synchronously is set at 40mm/s.Whenever carry out one-step print and just implement the operation that solvent absorbs.
Printing condition is, printing ink is set at 100mm/s from intaglio plate to the transfer speed of organosilicon printing blanket, printing ink is set at 100mm/s from the organosilicon printing blanket to the transfer speed as the glass baseplate surface that is printed body, Yi Bian change above-mentioned glass substrate, Yi Bian print continuously.
Then, observe the pattern be printed in glass baseplate surface, to the live width of above-mentioned pattern broaden gradually and surpass 25 μ m or narrow down gradually on the contrary and till being lower than 15 μ m or producing short-term a printed printing piece number count.
The results are shown in table 1.
Table 1
When using the solvent absorber of comparative example 1 in the past, that have the single layer structure absorbed layer, above-mentioned absorbed layer is when carrying out solvent absorption operation repeatedly, because of becoming, the solvent swelling is difficult to lyosoption, the wettability on organosilicon printing blanket surface rises gradually together therewith, the printing ink that becomes infilters easily, and the live width of thread pattern broadens gradually, and above-mentioned live width has surpassed 25 μ m during printing pieces several 400 pieces, has therefore abandoned continuing printing.
In addition, using when absorbed layer made opposite with the present invention, lower floor and swelling ratio than the solvent absorber of the above-mentioned comparative example 2 of the top layer double-layer structure of floor height down, when carrying out solvent absorption operation repeatedly, organosilicon printing blanket surface gradually becomes the state of solvent deficiency, descend gradually from the printing ink acceptance of intaglio plate to organosilicon printing blanket surface, when printing pieces several 100 pieces the pattern generating of above-mentioned fine rule broken string, thereby abandoned continuing printing.
Relative therewith, discovery is being used when absorbed layer made top layer and swelling ratio and be higher than solvent absorber lower floor's double-layer structure, embodiment 1～3 on above-mentioned top layer, all can the surface on top layer be maintained the few state of lyosoption easily of impregnation amount of solvent because of the function of above-mentioned lower floor, accompany therewith, the quantity of solvent on organosilicon printing blanket surface can also be maintained the scope of appropriateness, so otherwise could print out piece several more than 500 pieces, the live widths of printing continuously and surpass 25 μ m and be not lower than 15 μ m, the good thread pattern of broken string take place.In addition, also judge by the thickness that makes above-mentioned lower floor from the result of each embodiment and to be made as more than the skin depth, can make the further performance well of function of above-mentioned lower floor, can increase as the above-mentioned number of times that can continue to print out good thread pattern continuously.
Claims (3)
1. solvent absorber, possess the base material of membranaceous or sheet and the absorbed layer that forms in the one side at least of described base material, be used for contacting with the surface of organosilicon printing blanket to utilize described absorbed layer to absorb and remove containing the solvent that is immersed in described organosilicon printing blanket by the surface that makes described absorbed layer, wherein said solvent is contained in the printing process of having used described organosilicon printing blanket in the employed printing ink, it is characterized in that
Described absorbed layer is configured to comprise the top layer that constitutes described surface in interior stepped construction more than two-layer, and is higher than the layer on described top layer at the swelling ratio that more is equipped with described solvent by base material one side than described top layer.
2. solvent absorber according to claim 1, described absorbed layer are configured to swelling ratio by described top layer and solvent and are higher than the double-layer structure that the lower floor on described top layer constitutes.
3. solvent absorber according to claim 1 and 2, described top layer is formed by organic silicon rubber or organic siliconresin.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009226452 | 2009-09-30 | ||
| JP2009-226452 | 2009-09-30 | ||
| JP2009244733A JP4913196B2 (en) | 2009-09-30 | 2009-10-23 | Solvent absorber |
| JP2009-244733 | 2009-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102029784A true CN102029784A (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102816868A Pending CN102029784A (en) | 2009-09-30 | 2010-09-13 | Solvent absorber |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20110035840A (en) |
| CN (1) | CN102029784A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04294143A (en) * | 1991-03-25 | 1992-10-19 | Baldwin Shoji Kk | Ink-feed roller washer for printer |
| CN1409666A (en) * | 1999-12-16 | 2003-04-09 | 咨询卡有限公司 | Printed substrate made by transfer of ink jet printed image from printable transfer film |
| JP2006035769A (en) * | 2004-07-29 | 2006-02-09 | Sumitomo Rubber Ind Ltd | Printing equipment |
| CN101434144A (en) * | 2007-11-14 | 2009-05-20 | 住友橡胶工业株式会社 | Printing device and method |
-
2010
- 2010-07-09 KR KR1020100066119A patent/KR20110035840A/en not_active Application Discontinuation
- 2010-09-13 CN CN2010102816868A patent/CN102029784A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04294143A (en) * | 1991-03-25 | 1992-10-19 | Baldwin Shoji Kk | Ink-feed roller washer for printer |
| CN1409666A (en) * | 1999-12-16 | 2003-04-09 | 咨询卡有限公司 | Printed substrate made by transfer of ink jet printed image from printable transfer film |
| JP2006035769A (en) * | 2004-07-29 | 2006-02-09 | Sumitomo Rubber Ind Ltd | Printing equipment |
| CN101434144A (en) * | 2007-11-14 | 2009-05-20 | 住友橡胶工业株式会社 | Printing device and method |
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| Publication number | Publication date |
|---|---|
| KR20110035840A (en) | 2011-04-06 |
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Application publication date: 20110427 |