Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
AU649660B2 - A plate roll and an adhesive sheet therefor - Google Patents
[go: Go Back, main page]

AU649660B2 - A plate roll and an adhesive sheet therefor - Google Patents

A plate roll and an adhesive sheet therefor Download PDF

Info

Publication number
AU649660B2
AU649660B2 AU74272/91A AU7427291A AU649660B2 AU 649660 B2 AU649660 B2 AU 649660B2 AU 74272/91 A AU74272/91 A AU 74272/91A AU 7427291 A AU7427291 A AU 7427291A AU 649660 B2 AU649660 B2 AU 649660B2
Authority
AU
Australia
Prior art keywords
adhesive
sheet
plate roll
printing plate
face
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
AU74272/91A
Other versions
AU7427291A (en
Inventor
Koichi Hirota
Masao Kogure
Kazuhiro Kon
Takanori Saito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lintec Corp
Original Assignee
Lintec Corp
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 Lintec Corp filed Critical Lintec Corp
Publication of AU7427291A publication Critical patent/AU7427291A/en
Application granted granted Critical
Publication of AU649660B2 publication Critical patent/AU649660B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F27/00Devices for attaching printing elements or formes to supports
    • B41F27/12Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1262Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means
    • B41F27/1275Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means by means of adhesives, staples
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING 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
    • B41N6/00Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
    • B41N6/02Chemical means for fastening printing formes on mounting boards

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Description

AUSTRALIA
Patents Act 4486 COMPLETE SPECIFICATION
(ORIGINAL)
Class Int. Class Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority Related Art: 00 0 0 0 0 0* 00 0 0 0 ft 0o Applicant(s): 0 Lintec Corporation 23-23, Hon-cho, Itabashi-ku, Tokyo, JAPAN Address for Service is: 1 1 c 4 t PHILLIPS ORIONDE FITZPATRICK Patent and Trade Mark Attorneys 367 Collins Street Melbourne 3000 AUSTRALIA Complete Specification for the invention entitled: A PLATE ROLL AND AN ADHESIVE SHEET THEREFOR 00 'Our Ref 212672 POF Code: 87884/133495 The following statement is a full description of this invention, including the best method of performing it known to applicant(s): -1 6006 A PLATE ROLL AND AN ADHESIVE SHEET THEREFOR BACKGROUND OF THE INVENTION 1. Field of the invention The present invention relates to a novel plate roll attached with a printing plate made of resin by means of b[ adhesive and a novel adhesive sheet utilized for attaching the printing plate to the base plate roll.
I
K i2. Prior art i A printing plate leaf made of resin is attached to a base plate roll to form a plate roll by means of a double faced adhesive sheet and continuous printing is made by rotating the plate roll.
Adhesives generally utilized for attaching the printing plate leaf to the base plate roll have strong adhesive ability and the printing plate leaf is not easily detached from the base plate roll after the printing is finished.
Occasionally, the printing plate leaf made of resin is torn up during the operation of detaching. A part of the adhesive and the adhesive sheet usually remains on the surface of the base plate roll or the printing plate and removal of the remaining things takes time.
r I 1 ic SUMMARY OF THE INVENTION In one aspect the invention provides a plate roll including a printing plate leaf made of a resin attached to a base plate roll by an adhesive wherein the adhesive is a photo curable adhesive which loses adhesive ability by curing with electromagnetic wave or electron beam irradiation, the resin being transparent to said electromagnetic wave or electron beam irradiation.
In another aspect the invention provides a plate roll including a printing plate leaf made of a resin attached to a base plate roll by an adhesive sheet wherein the adhesive sheet includes a removable sheet and an adhesive layer and wherein the adhesive layer is a photo curable adhesive which loses adhesive ability by curing with electromagnetic wave or electron beam irradiation, the resin being transparent to said electromagnetic wave or electron beam irradiation.
o 0 e o O a a t ii t 0 4 6
I
-1 2 In a further aspect the invention provides a plate roll including a printing plate leaf made of a resin attached to a base plate roll by an adhesive sheet wherein the adhesive sheet includes a supporting sheet with a first adhesive layer coated on one face and a removable sheet attached to the other face of said supporting sheet, and further with a second adhesive layer between said supporting sheet and said removable sheet wherein at least one of said adhesive layers is a photo curable adhesive which loses adhesive ability by curing with electromagnetic wave or electron beam irradiation, the resin being transparent to said electromagnetic wave or electron beam irradiation. The other adhesive layer may be a water swelling adhesive which loses adhesive ability by swelling with water.
Other features and advantages of the invention will appear more fully from the following description.
4 4 44 a 4o 4. 4 4, 39 WDN 3- 1"u cp-- DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It was considered by the present inventors that the 5602N -4 I 5 antinomic problem that a printing plate is firmly attached to base plate roll during the printing operation and easily detached after the printing operation is finished can be solved only by changing the adhesive ability of the adhesive utilized between the time of attachment and the time of detachment. For the purpose of changing the adhesive ability of the adhesive utilized, a mechanism of decreasing the adhesive ability by curing the adhesive by the action of electromagnetic wave and another mechanism of decreasing the adhesive ability by swelling the adhesive by water were considered. These considerations led to the completion of the present invention, preferred embodiments of which are further described below.
Embodiment i: A plate roll attached printing plate made of resin by means of an adhesive which is characterized in that a photo curable adhesive which loses adhesive ability by curing by irradiation of electromagnetic wave or electron beam is used as the adhesive.
Embodiment 2: A plate roll attached \a printing plate 20 made -f resin by means of an adhesive which is characterized in that a water swelling adhesive which loses adhesive ability by swelling by water is used as the i
I
adhesive.
-3 An adhesive sheet utilized for attaching a printing plate made of resin to a base plate roll which is characterized in that the adhesive sheet comprises a removable sheet and a photo curable adhesive which loses adhesive ability by curing by irradiation of electromagnetic wave or electron beam and is coated on one face of the removable sheet.
X
4 An adhesive sheet utilized for attaching a printing plate made of resin to a base plate roll which is S characterized in that the adhesive sheet comprises a supporting sheet, a removable sheet and adhesive layers coated on both faces of the supporting sheet, that the adhesive layer coated at least on one face of the supporting sheet comprises a photo curable adhesive which loses adhesive ability by curing by irradiation of electromagnetic wave or electron beam and that the removable sheet is attached at least on one face of the Si adhesive sheet.
laoo S nt.ien- 5: An adhesive sheet utilized for attaching a printing plate made of resin to a base plate roll which is characterized in that the adhesive sheet comprises a removable sheet and a water swelling adhesive which loses adhesive ability bh swelling y \water and is coated on one 6 U-4 face of the removable sheet.
An adhesive sheet utilized for attaching a printing plate made of resin to a base plate roll which is characterized in that the adhesive sheet comprises a supporting sheet, a removable sheet and adhesive layers coated on both faces of the supporting sheet, that the adhesive layer coated at least on one face of the supporting sheet comprises a water swelling adhesive which loses adhesive ability by swelling -i-.\water and that the removable sheet is attached at least on one face of the adhesive sheet.
ti-n- An adhesive sheet utilized for attaching a printing plate made of resin to a base plate roll which is characterized in that the adhesive sheet comprises a supporting sheet, a removable sheet and adhesive layers coated on both faces of the supporting sheet, that the adhesive layer coated on one face of the .supporting sheet Scomprises a photo curable adhesive which loses adhesive ability by curing by irradiation of electromagnetic wave or f electron beam, that the adhesive layer coated on the other face of the supporting sheet comprises a water swelling adhesive which loses adhesive ability by swelling by water and that the removable sheet is attached at least on one face of the adhesive sheet.
7 U1^ The kind of the printing plate made of resin and the base plate roll utilized in the invention is not particularly limited but any kind may be utilized.
The adhesive utilized in Ith-o-i-n-ven- -igs\l 1 is not particularly limited .o long as the adhesive loses its adhesive ability by irradiation of e' ctromagnetic wave, such as ultraviolet light, visible light, T-ray, X-ray infrared light and the like, or electron beam. When electromagnetic wave having weaker penetrating power through substances, such as ultraviolet light, visible light and infrared light, is utilized, the printing plate 4O made of resin is desirably more transparent.
0 The loss of adhesive ability in the invention means a remarkable decrease of adhesive strength. It is the condition that the adhesive strength is so lower than the S original strength that the printing plate can be detached easily by hands.
Examples of the photo curable adhesive of the invention are: an adhesive comprising polymer having two or more "d photo reactive unsaturated bonds as the main component of the adhesive and an adhesive which is prepared by compounding a photo sensitive monomer and like other reactive low molecular weight compounds into a conventional adhesive.
©j 8 4I, Examples of the photo curable adhesive are: a polymer prepared by reacting glycidyl (meth)acryiate with acid groups in copolymer of acrylic ester or methacrylic ester and a small amount of acrylic acid or methacrylic acid; and a polymer prepared by reacting half-urethane with a mixture of $-hydroxyethyl (meth)acrylate having hydroxylgroup in the molecule with copolymer of acrylic ester or methacrylic ester and a small amount of acrylic acid or methacrylic acid. The half-urethane is prepared by the reaction of polyisocyanate with a monomer containing hydroxyl group, Photo reactive groups are introduced into the polymer by these reactions.
Examples of the photo curable adhesive are: a compound prepared by mixing a photo sensitive monomer with conventional rubber or acrylic adhesive in the amount from 1 to 50 weight Examples of the photo sensitive monomer are: (meth)arylic esters having two or more double bonds in the molecule, such as 1,4-butylene glycol diacrylate, 1,6-hexane glycol diacrylate, neopentyl glycol diacrylate, (poly)ethylene glycol diacrylate, triiiethylolpropane tri(meth)acrylate, tet-amethylolmethane tetracrylate and the like.
It is desirable that a photo sensitizer is added to 9 the photo curable adhesive to enhance the reaction rate of curing. Examples of such photo sensitizer are: diacetyl, i benzi], benzophenone, benzoin, bromoacetophenone, Schloroacetone, benzoquinone, anthraquinone, 2-ethylanthraquinone, benzoin isopropyl ether, benzoin ethyl ether and the like other organic carbonyl compounds.
The photo sensitizer is generally utilized in the amount from 0.1 to 10 weight of the adhesive.
After printing is finished, the plate roll of the =R-tfi e 1 is irradiated by electromagnetic wave or electron beam from the surface of the printing plate made of resin attached on the base plate roll. Because the adhesive between the printing plate and the base plate roll ii is cured by the irradiation, ihe adhesive ability of the adhesive is lost and the printing plate made of resin is i easily detached from the base plate roll.
Ki The source of the irradiation is no, particularly limited so long as the irradiation cures the adhesive and can be appropriately selected according to the adhesive t 1utilized. Ultraviolet light is preferable because of efficiency of the irrdiation time and simplicity of apparatus.
The kind of the water swelling adhesive of the -eei- a \2 is not particularly limited so long as the adhesive loses adhesive ability by swelling with water.
An example of the water swelling adhesive is an adhesive described in B -2 2-which is described in the following.
The adhesive comprises one or more than one kinds of nonionic surface active agent which comprises ethylene oxide group as the hydrophillic group and one or more than one kinds of copolymer composed of 40 to 99 mole of one or more than one kinds of constituent unit having the formula and 60 to 1 mole of one or more than one k oo kinds of constituent unit having the formula (II) and, 0 optionally according to the needs, carboxyl groups o, comprised in the component are crosslinked by a 0000 crosslinking agent roacting with carboxyl group, such as zinc acetate and magnesium chloride; H RI Q -C C 00ooo H Ra (I) 00o- 0 wherein RI is hydrogen, chlorine or lower alkyl group, R 2 is hydrogen, chlorine, lower alkyl group, -OCOR 3 -ORa, o0 -COORa, phenyl, tolyl, -CN, -CONH 2 -CONHCH20H, 0 0
-C
2
H
4 OH, -OH or pyridyl and Ra is alkyl group of 1 to 8 carbon atoms; i z;~i ll~ -(lCIIC- I II~ I i X Z I I C C I
I
Y COOH (II) wherein X, Y and Z may be the same kind or different kinds selected from hydrogen, chlorine, lower alkyl group, -COOR 4 S-COOH, -CH2COOH or -CH 2
COOR
4 and R4 is alkyl group of 1 to 4 carbon atoms. Alkaline compounds, such as potassium hydroxide, may be added when the adhesive is crosslinked by the crosslinking agent Examples of the nonionic surface active agent which comprises ethylene oxide group as the hydrophillic group of 44 i{ the component are:
OH(C
2
H
4 0) (C 3
H
6 0) b(C 2
H
4 wherein a, b and c are 4 ;integers from 20 to It RA(CzH 4 0)dH, wherein R is aikyl group of 6 to 18 carbon atoms, alkylphenyl group having alkyl group of 4 to l carbon atoms or a group having the formula (III) I
CH
2 C 2
CH
2
CH
2 H (or CH 3
(III)
wherein A is oxygen, sulfur or -COO-, -CONH-,
-CON(C
2 fO 4 -PO4H- or -P0 4
(C
2
H
4 0) dH- and d is an integer from 2 to 80; and 12 0
H
2 C I I
H(OC
2
H
4 -0-HC CH-0(C 2
H
4
O),H
CH
O(CaH 4 0)yH (IV) wherein R is alkyl group of 6 to 18 carbon atoms and x, y and z are integers of 2 to Preferable examples of the nonionic surface active agent which comprises ethylene oxide group as the hydrophillic group of the component are: polyethylene glycol nonylphenyl ether, polyethylene glycol sorbitane monooleyl ester, polyethylene glycol lauryl ether, block copolymer of polyethylene glycol and polypropylene glycol, o, polyethylene glycol lauryl phenyl ether, polyethylene glycol t-butyl phenyl ether and the like.
The constituent unit having the formula of the S component is introduced by using a monomcr, such as vinyl esters like vinyl acetate, methacrylic esters like S ethyl acrylate, ethylene, styrene, methyl vinyl ether, vinyl chloride and acrylonitrile. The constituent unit having the formula (II) of the component is introduced by using a monomer having carboxyl group, such as acrylic acid, methacrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, aconotic acid, monoalkyl maleic 13 *rm~acid, monoalkyl fumaric acid, monoalkyl itaconic acid and the like.
It is required that the component and the component are compatible and the adhesive prepared swells with water and, therefore, that the ratio of the component (A) and the component is within a definite range as described in the cited reference.
Epoxy compounds of glycidyl derivative may be optionally utilized with the component and the component o° Another example of the water swelling adhesive is an 0 adhesive described in Laid Open Japanese Patent Publication 0 0 oooShowa 59-157162 which is described in the following.
0o00 o The adhesive comprises water soluble polymer and (meth)acrylic ester monomer which gives water soluble or water swelling polymer by polymerization.
000 4 0o0 0 oe An example of the water soluble polymer of the component is polymer prepared from a monomer having the oo following formula 0 OC 1 oocoI o CH 2
=CR
5 -0-R 7
(V)
coo o0 wherein Rs is hydrogen or methyl group, Ro is alkylene group of 2 to 4 carbon atoms, R 7 is alkyl group of 1 or more than 1 carbon atoms and n is an integer of 1 or more 14 4 than 1, such as (meth)acrylic ester, acrylic acid, vinylpyrrolidone, acrylamide, dimethylaminoethyl (meth)acrylate, diethylaminoethyl (meth)acrylate, vinyl methyl ether and the like. A water soluble polymer prepared by copolymerizing 30 weight part or less of acrylic ester, vinyl acetate, styrene and the like monomer with 100 weight parts of the monomer having the formula (V) may be optionally utilized as the water soluble polymer of the componen' Example of (meth)acrylic ester monomer of the component are: (meth)acrylic ester, dimethylaminoethyl (metii)acrylate, diethylaminoethyl (meth)acrylate and the i like.
4. Still another example of the water swelling adhesive is the adhesive described in Laid- Open Japanese Patent Publication Showa 56-70077 which is described in the following.
44 4 The adhesive comprises a salt of a copolymer prepared by neutralizing carboxylic acid in a copolymer Scomprising 10 to 40 mole% of monomer having carboxyl group, to 90 mole of alkyl (meth)acrylate in which the alkyl group has 4 or more carbon atoms and 0 to 20 mole of other vinyl monomer and a hydrophillic compound having the formula: R 8 O(RO).Rio, wherein Ra is alkyl group of 1 i
M
to 4 carbon atoms, R, is alkylene group of 2 to 4 carbon atoms, Rio is hydrogen or alkyl group or acetyl group of 1 to 4 carbon atoms and m is an integer of 1 to 6.
When the printing operation using the plate roll of 4e -i=a 2 is finished and the printing plate made of resin attached to the base plate roll is detached, water is added to the adhesive sheet remaining on the face of the base plate roll or the printing plate. The adhesive sheet is swelled by water and the adhesive ability of the adhesive sheet is lost. The adhesive sheet and adhesive o"o layer are removed completely with ease.
0 uo4 no ,r^c~w~eve4 ey
E
1ooo The adhesive sheet of ties-i.-nvnti 3 i-/the adhesive sheet utilized for the plate roll of I n=ieR- 1. The o adhesive sheet\ comprise a layer of the photo curable adhesive and a removable sheet on one or both faces of the adhesive layer.
0 The adhesive sheet comprising a layer of the photo curable adhesive and a removable sheet only on one face of the adhesive' layer can be stored in the form of roll. It Sis desirable that the faces of the removable sheet have S such characteristics that a face of the removable sheet is more easily removed from the adhesive than the other face of the removable sheet.
When the ease of removal of the adhesive from the L1. 16
CD
1 L~
T
removable sheet is different between the two faces of the removable sheet, the problem that the adhesive coated originally on one face of the removable sheet is separated on the both faces of the removable sheet in the roll can be surely prevented during the operation. When the adhesive sheet is utilized, it is pulled out from the roll, the adhesive face of the adhesive sheet is pressed to the outer face of the base plate roll or to the inner face of the printing plate and the removable sheet is removed from the adhesive. The printing plate is attached to the base plate o0 o 0 o0 0 roll by pressing it against the base plate roll and the 00 S..o plate roll is prepared.
00 0 When the adhesive sheet comprises a layer of the photo 0000 °0 curable adhesive and a removable sheet on both faces of the adhesive layer, it is desirable that the removable sheet at one face of the adhesive layer is more easily detached from 0o the adhesive than the removable sheet at the other face of 0 00 the adhesive layer by the same reason as described. When the adhesive sheet is utilized, the removable sheet which can be removed from the adhesive more easily is first 0 0 removed from the adhesive sheet and the adhesive sheet is pressed to the outer face of the base plate roll or to the inner face of the printing plate and the remaining removable sheet is removed from the adhesive. The printing 17 1 7
*A
Ulli- a~ llr~-- ii, ~-p-rs II_ plate is attached to the base plate roll by pressing it against the plate roll and the plate roll is prepared.
When the operation of printing is finished by using the adhesive sheet of Ft, the plate roll attached with the printing plate made of resin is irradiated by, for example, ultraviolet light for 20 to 30 seconds from the surface of the printing plate made of resin. The photo curable adhesive on the inner face of the printing plate is cured by the irradiation and loses adhesive ability. Thus, the printing plate is easily detached from the plate roll by hand. Remaining adhesive on the faces are removed easily.
The adhesive sheet of i L- 4 comprises a supporting sheet and two layers of adhesive coated on both faces of the supporting sheet and at least one of the two layers of adhesive comprises the photo curable adhesive.
The adhesive sheet can be stored by attaching a removable sheet on one or both faces of the adhesive sheet.
The supporting sheet is not particularly limited.
Examples of the supporting sheet are films of polyethylene terephthalate, nylon, polypropylene, polycarbonate and the like other materials. When ultraviolet light, visible light and infrared light are utilized for irradiation, films having higher transparency is preferable so that the I light transmission is easier.
SIt is also preferable that the surface of the ri supporting sheet is activated by corona discharge or by I like other methods to enhance the affinity of the adhesive and the surface.
SWhen the adhesive sheet of the invention 4 having a removable sheet on one face of the sheet is utilized, the adhesive sheet is attached to the outer face of the plate i! roll or to the inner face of the printing roll by the face on which the adhesive is exposed. The removable sheet is removed and the printing plate is attached to the base plate roll by pressing to the base plate roll. It is desirable that the adhesive layer of photo curable adhesive |i is placed to the face of the base plate roll.
I When the printing plate is attached to the base plate roll by utilizing the adhesive sheet of the invention 4 I having photo curable adhesive on one face and conventional adhesive on the other face and the adhesive layer of the photo curable adhesive is placed to the face of the base plate roll, the adhesive on the surface of the base plate roll is cured by irradiation of ul.traviolet light and the printing plate can be detached from the base plate roll while the adhesive sheet is still attached to the printing plate.
,19 Printing plates made of resin are often disposed after the use. The adhesive sheet of tfh:e=i-nave-Bt- i\ 4 having photo curable sheet only on one face is suitable for easy disposal because the adhesive sheet need not be removed.
When a printing plate made of resin is used again after it is utilized for printing, the adhesive sheet of e in-v-em -i 4 having photo curable adhesive on the both faces is suitable for use.
The adhesive sheet of 5he=i=n@==e5 is utilized for the plate roll of h-e= n-:-eT=on\2 and comprises a layer of water swelling adhesive and a removable sheet attached on one or both iaces of the layer of the adhesive.
When the removable sheet is attached only on one face of the adhesive layer, the adhesive sheet can be stored in the form of roll. It is desirable that the faces of the removable sheet have such characteristics that a face of the removable sheet is more easily removed from the adhesive than the other face of the removable sheet.
When the ease of removal of the adhesive from the K MJ removable sheet is different between the two faces of the removable sheet, the problem that the adhesive coated originally on one face of the removable sheet is separated on the both faces of the removable sheet in the roll can be surely prevented during the operation. When the adhesive 1 W oV ^^MS t sheet is utilized, it is pulled out from the roll, the adhesive face of the adhesive sheet is pressed to the outer i face of the base plate roll or to the inner face of the {i printing plate and the removable sheet is removed from the !j adhesive. The printing plate is attached to the base plate roll by pressing it against the base plate roll and the plate roll is prepared.
i When the adhesive sheet comprises a layer of the water swelling adhesive and a removable sheet on both faces of the adhesive layer, it is desirable that the removable sheet at one face of the adhesive layer is more easily detached from the adhesive than the removable sheet at the other face of the adhesive layer by the same reason as described. When the adhesive sheet is utilized, the removable sheet which can be removed from the adhesive more easily is first removed from the adhesive sheet and the adhesive sheet is pressed to the outer face of the base plate roll or to the inner face of the printing plate and the remaining removable sheet is removed from the adhesive.
The printing plate is attached to the base plate roll by pressing it against the plate roll and the plate roll is prepared.
When the operation of printing is finished by using the adhesive sheet of L e iuvn,-i 5, the printing plate made S21 1/yw of resin is detached from the base plate roll by using a conventional method. Adhesive remaining on the surfaces of the base plate roll and printing plate made of resin is treated with water. The adhesive is swelled by water and loses adhesive ability and can be removed very easily by wiping with cloth or the like.
The adhesive sheet of 6ttrivn i 6 comprises a supporting sheet and two water swelling adhesive layers coated on both faces of the supporting sheet. As the supporting sheet, a porous sheet is preferred because water penetrates easily in the sheet.
When the adhesive sheet of the invention 4 having the S' photo curable adhesive only on one face is cJated with the water swelling adhesive on the other face, the adhesive sheet formed corresponds to the adhesive sheet of L44 inaa-\i 7. The plate roll is prepared by utilizing the adhesive sheet in the same way as in teh:e--ne 4.
The plate roll attached with the printing plate by utilizing the adhesive sheet of im'aee& 7 through the photo curable adhesive on the outer face of the base plate roll and the water swelling adhesive on the inner face of the printing plate is, after finishing the operation of printing, irradiated with ultraviolet light and the printing plate is removed from the face of the base plate i I l1 c-ii~.
roll while the adhesive sheet is still attached to the printing plate.
When the printing plate is dipped into water, the adhesive is swelled and the adhesive sheet is removed spontareously from the printing plate. The remaining printing plate can be utilized again after drying.
When the base plate roll is attached with the printing plate through the water swelling adhesive on the outer face of the base plate roll and the photo curable adhesive on the inner face of the printing plate, the printing sheet remains on the surface of the base plate roll and can be 0 Q no S.oo removed by swelling with water.
00 0 0B- Tt, former method is preferable because the printing plate is quickly detached from the base plate roll.
The invention will be understood more readily with reference to the following examples; however thes -,amples 0 0 are intended to illustrate the invcntion and are not to be o0 construed to limit the scope of the invention.
0000 Example 1 So Polyethylene terephthalate film of 50 thickness activated by corona discharge on both faces was used as the supporting sheet for a double faced tape.
A removable sheet of polyethylene terephthalate film of 23 i- -i 38A thickness coated with silicone on one face was coated with a photo curable adhesive to 15g thickness by a knife coater on the face coated with silicone. The adhesive was an acrylic adhesive comprising 40 weight of trimethylolpropane (neth)acrylate and 5 weight of benzoin was further added as the photo sensitizer.
The removable sheet coated with the photo curable adhesive was laminated to the both faces of the supporting sheet and a double face adhesive sheet was prepared.
j One of the removable sheets on the adhesive sheet was removed and the adhesive sheet was pressed to a printing Splate made of resin (TorayleafC, a product of Toray Co., Ltd., 1 mm thickness). The other removable sheet was removed and the printing plate was attached to a stainless steel base plate roll by using the double face adhesive sheet.
I After standing for 24 hours, the plate roll was irradiated with ultraviolet light by a 35 mW/cm 2 ultraviolet lamp for 20 seconds over the printing plate made of resin. Total dose of ultraviolet light irradiated was 700 md/cm After the irradiation, the printing plate made of resin was easily detached by fingers. The adhesive sheet remained attached to the face of the printing plate when 24 i the printing plate was detached from the base plate roll and was removed from the printing plate easily by fingers.
The same adhesive sheet as the above was laminated to the same printing plate as the above and used for adhesion test without attaching to the base plate roll. After standing for 24 hours, the adhesive strength was 1700 mm width. Then, ultraviolet light was irradiated to the oiter face of the printing plate made of resin in the same rcndition as the above. Ten minutes after the irradiation, the adhesive strength decreased to 90 g/25 mm width.
Example 2 A removable sheet coated to the thickness of 50A with an acrylic water swelling adhesive which comprised a copolymer of ethyl acrylate, vinyl acetate and methacrylic acid and polyethylene glycol lauryl ether and was crosslinked by zinc acetate in the presence of potassium hydroxide was utilized in place of one of the two removable sheets coated with adhesive utilized in Example 1. A porous sheet of Ai polyethylene terephthalate treated by corona discharge was utilized as the supporting sheet. A printing plate was attached to a base plate roll by the same method as in Example 1.
After standing for 24 hours, ultraviolet light was irradiated by the same method as in Example 1i. The printing plate was detached from the base plate roll easily by fingers.
When the printing plate was detached from the base plate roll, the adhesive sheet was firmly attached to the inner face of the printing plate. After dipping the printing plate in water for 3 hours, the adhesive sheet was removed from the printing plate easily by fingers.
While the invention has been particularly shown and described with reference to preferred embodiments threrof, it will be understood by those skilled in the art that the o, foregoing and other changes in form and details can be made therein without departing from the spirit and scope of the invention.
To summarize the advantages obtained by the invention, the plate roll attached with the printing plate made of resin according to the invention has advantages that the Sprinting plate attached is easily detached, the adhesive sheet and remaining adhesive are easily removed after the operation of printing is finished and thus efficiency of the operation of printing is enhanced.
26

Claims (5)

1. A plate roll including a printing plate leaf made of a resin attached to a base plate roll by an adhesive wherein the adhesive is a phot:o curable adhesive which loses adhesive ability by curing with electromagnetic wave or electron beam irradiation, the resin being transparent to said electromagnetic wave or electron beam irradiation.
2. A plate roll including a printing plate leaf made of a resin attached to a base plate roll by an adhesive sheet wherein the adhesive sheet includes a removable sheet and an adhesive layer and wherein the adhesive layer is a photo curable adhesive which loses adhesive ability by curing with electromagnetic wave or electron beam irradiation, the resin being transparent to said electromagnetic wave or electron beam irradiation.
3. A plate roll including a printing plate leaf made of a resin attached to a base plate roll by an adhesive sheet wherein the adhesive sheet includes a supporting sheet with
4. a first adhesive layer coated on one face and a removable °sheet attached to the other face of said supporting sheet, J °and further with a second adhesive layer between said S" 25 supporting sheet and said removable sheet wherein at least one of said adhesive layers is a photo curable adhesive which loses adhesive ability by curing with electromagnetic wave or electron beam irradiation, the resin being transparent to said electromagnetic wave or electron beam 4o irradiation. 4. A plate roll according to claim 3 wherein one of 444 said adhesive layers is a photo curable adhesive which *4 i loses adhesive ability by curing with electromagnetic wave 0444 S: 35 or electron beam irradiation and the other adhesive layer is a water swelling adhesive which loses adhesive ability by swelling with water. C ?3r 9
5. A plate roll as claimed in any one of claims 1 to 3 27 ~J c substantially as hereinbefore described with reference to any one of the examples. DATED: 8 February 1994 PHILLIPS ORMONDE FITZPATRICK Attorneys for: LINTEC CORPORATION 5601N i 28
AU74272/91A 1990-04-12 1991-04-10 A plate roll and an adhesive sheet therefor Ceased AU649660B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9683390A JPH03294376A (en) 1990-04-12 1990-04-12 Printing roll and tacky sheet for printing roll
JP2-96833 1990-04-12

Publications (2)

Publication Number Publication Date
AU7427291A AU7427291A (en) 1991-10-17
AU649660B2 true AU649660B2 (en) 1994-06-02

Family

ID=14175542

Family Applications (1)

Application Number Title Priority Date Filing Date
AU74272/91A Ceased AU649660B2 (en) 1990-04-12 1991-04-10 A plate roll and an adhesive sheet therefor

Country Status (5)

Country Link
EP (1) EP0452808B1 (en)
JP (1) JPH03294376A (en)
AU (1) AU649660B2 (en)
CA (1) CA2040213A1 (en)
DE (1) DE69121623T2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9400057A (en) * 1994-01-13 1995-08-01 J M J Houtstra Holding B V Fastener.
US6085653A (en) * 1995-01-13 2000-07-11 Winkle Holding, B.V. Method for producing printed matter and printing form attachment means for use in the method
EP0752322B1 (en) * 1995-07-07 2001-06-27 Agfa-Gevaert N.V. Polyester based lithographic printing and mounting thereof on a web press
AT3802U1 (en) * 1999-07-15 2000-08-25 Rotoform Druckformen Ges M B H METHOD FOR ATTACHING A Cliché PLATE ON A PATRICE CYLINDER AND PATRICE CYLINDER
FR2802465B1 (en) * 1999-12-20 2002-10-25 Rollin Sa SLEEVE COMPRISING MEANS FOR FIXING PRINTING PLATES AND PROCESS FOR OBTAINING SAME
WO2003057497A1 (en) * 2002-01-08 2003-07-17 Tesa Ag Pressure-sensitive adhesive tape for the adhesion of printing plates
EP1332871B1 (en) * 2002-01-31 2009-07-15 Celfa AG Multilayered stripable printing plate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US491360A (en) * 1893-02-07 Oliver william ketchum
JPH01210343A (en) * 1988-02-18 1989-08-23 Fuji Photo Film Co Ltd Lithography and lithographic plate
US4871631A (en) * 1987-10-21 1989-10-03 Basf Aktiengesellschaft Adhesively securable multilayer relief plate for flexographic printing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH497280A (en) * 1968-10-04 1970-10-15 Fehr Gustav Method for holding and releasing the individual printing types of a printing set and means for carrying out this method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US491360A (en) * 1893-02-07 Oliver william ketchum
US4871631A (en) * 1987-10-21 1989-10-03 Basf Aktiengesellschaft Adhesively securable multilayer relief plate for flexographic printing
JPH01210343A (en) * 1988-02-18 1989-08-23 Fuji Photo Film Co Ltd Lithography and lithographic plate

Also Published As

Publication number Publication date
EP0452808A2 (en) 1991-10-23
CA2040213A1 (en) 1991-10-13
JPH03294376A (en) 1991-12-25
DE69121623T2 (en) 1997-01-16
EP0452808B1 (en) 1996-08-28
DE69121623D1 (en) 1996-10-02
AU7427291A (en) 1991-10-17
EP0452808A3 (en) 1991-11-06

Similar Documents

Publication Publication Date Title
KR950013218B1 (en) Radiation curable rubber-based pressure sensitive adhesive
US4599293A (en) Toner transfer process for transferring and fixing a toner image by means of film
US4459348A (en) Multi-layer elements suitable for the production of printing plates and relief plates
JP2004503407A (en) Protective coating for color filters
WO1986002177A1 (en) Post-treatment of cured, radiation sensitive polymerizable resins
AU649660B2 (en) A plate roll and an adhesive sheet therefor
US5409764A (en) Curable adhesive composition and sheet thereof
JP2988549B2 (en) Manufacturing method of double-sided adhesive tape
US5284091A (en) Plate roll and an adhesive sheet therefor
JPH11302604A (en) Surface tackification treatment method for flexible layer
JP2001264959A (en) Improved photosensitive composition for flexographic printing plates
JPH028851A (en) Photosensitive and photopolymerizable plate
JPS5850164B2 (en) Surface protection method
JPS5830809B2 (en) Surface protection method
JP2009256465A (en) Active energy ray-crosslinking type adhesive
KR970009578B1 (en) Anaerobic adhesive and sheet
JPS59157162A (en) Adhesive composition that is easily removable with water
JPH0450351B2 (en)
JP3510722B2 (en) Method for manufacturing viscoelastic sheet
JP4815865B2 (en) Resin composition and pressure-sensitive adhesive using the same
JP4578600B2 (en) Photosensitive adhesive tape and method for producing the same
JPS6164773A (en) Photo-setting, pressure-sensitive adhesive
CA2118104A1 (en) Radiation curable compositions and their use for coating a substrate
EP0467641B1 (en) Curable adhesive composition and sheet thereof
JP2001270016A (en) Sheetlike reinforcing material