CN1946554A - Method of making a photpopolymer sleeve blank having an integral UV transparent cushion layer for flexographic printing - Google Patents
Method of making a photpopolymer sleeve blank having an integral UV transparent cushion layer for flexographic printing Download PDFInfo
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- CN1946554A CN1946554A CN 200580012769 CN200580012769A CN1946554A CN 1946554 A CN1946554 A CN 1946554A CN 200580012769 CN200580012769 CN 200580012769 CN 200580012769 A CN200580012769 A CN 200580012769A CN 1946554 A CN1946554 A CN 1946554A
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Abstract
A method of making a photopolymer sleeve blank (10) for use in flexographic printing is provided which includes providing a base sleeve (12), applying a cushion layer (14) over the base sleeve (12) which is substantially transparent to curing radiation, applying an optional barrier layer (16) over the cushion layer (14), and applying a photopolymer layer (18) over the barrier or cushion layer. The inner surface of the base sleeve is then exposed to curing radiation such that the radiation penetrates the sleeve and cushion layer to substantially cure a portion of the thickness of the photopolymer layer.
Description
The present invention relates to the manufacture method of photopolymer sleeve blank, the invention particularly relates to can be by the manufacture method of photopolymer sleeve blank terminal use's imaging, that be used for flexographic printing.
The purposes of flexographic printing plates in print field that is formed by photopolymerizable composition is well-known.The photopolymerizable composition of this class comprises at least a elastic adhesive, a kind of monomer and a kind of light trigger usually.When the photopolymer forme was accepted the actinic radiation exposure from the back side, polymerization will take place in photopolymerizable thing layer.This step is commonly referred to initially " back-exposure " step, forms the zone of convergency of forme cross section in this step, and this zone is called " version base ".This edition base provides support for form relief image on forme.Expose through actinic radiation when the photopolymer part on version base top, after forming required image on the forme, use unexposed area on the solvent flush away forme usually, thereby form the relief image of printing.Yet when adopting single adhesion type forme, wherein forme is during around plate cylinder or plate sleeve, and image can be interrupted in seam or space, thereby makes the printed image that is transferred on the printable fabric take place chaotic or distortion.
In recent years, developed " no seam " the hollow cylinder sleeve that comprises as the photopolymer layer of all kinds of printing carriers.For example, existing a kind of printing process and product (can be from OEC Graphics, the trade mark that Inc. is purchased is SEAMEX
Product) in, on metal or plastic sleeve, be enclosed with plate shaped photopolymerizable material, two ends are merged and photopolymerizable material are bonded on the sleeve through heating.In order to obtain to support the needed version base of relief image details, make photopolymerizable material before the parcel sleeve, stand the back-exposure step.Yet, usually wish to make a kind of seamless photopolymer surface that comprises lower floor's laying (as the liner foams etc.).Though above-mentioned manufacture method can comprise this laying, like this can be very consuming time, volume that also can limits product.
Do not have seam photopolymer sleeve in order to obtain large volume, at seam crossing displacement can take place during owing to fusion, therefore proposed nothing " version base " photopolymer sleeve.Because version base and the unexposed photopolymer above the version base are to merge under different condition, so displacement can take place.Therefore, need carry out existing in the method for back-exposure step some problems at above-mentioned manufacturing gap sleeve.
Wish to produce and comprise unexposed photopolymer layer on the laying, can be easy to and carry out efficiently the large volume photopolymer sleeve of back-exposure.Also wish to produce a kind of blank photopolymer sleeve that is easy to be used to improve printing quality by terminal use's imaging.
Therefore, still need a kind of manufacturing to be used for the improving one's methods of photopolymer printing sleeve of flexographic printing operation technically.
Embodiment of the present invention have satisfied above-mentioned requirements by the photopolymer sleeve that comprises laying is provided, and wherein laying becomes whole with sleeve, and photopolymer is easy to solidify.The present invention also provides the blank photopolymer sleeve that is easy to by terminal use's imaging, is used to improve printing quality.
According to an aspect of the present invention, the method of the manufacturing photopolymer sleeve blank that proposes comprises provides the matrix of the cylindrical sleeve with inner surface and outer surface, apply one deck laying on the outer surface of sleeve matrix, wherein laying is a substantial transparent to curing radiation.So-called " curing radiation " is meant those radiation wavelengths that cause the photopolymer polymerization.So-called " substantial transparent " is meant that at least 20% incident radiation can pass through this laying.This method also is included in and applies one deck photopolymer layer on the laying, the inner surface of sleeve matrix is exposed under curing radiation, so that this radiation sees through sleeve, makes with the photopolymer layer of the adjacent segment thickness of laying to solidify substantially.
Preferably, the sleeve matrix is selected from fibre-reinforced fluoropolymer resin or plastics.The thickness of sleeve matrix be preferably about 0.01 and about 6.35 millimeters between, between more preferably about 0.60 and 0.80 millimeter.
Laying is preferably selected from open-cell foam materials, closed-cell foam material or volume displaced material.The thickness of laying be preferably about 0.25 and about 3.25 millimeters between, between more preferably about 1.0 and 1.5 millimeters. preferably laying is coated on the sleeve matrix by rotational casting, extrusion molding or scraper plate coating or scraper coating.Perhaps, laying can the sheet material form be bonded on the sleeve matrix with adhesive.Preferably, after laying applies, the laying surface ground reach preset thickness.Laying is preferably about 20% to about 80% to wavelength for the transmissivity of the UV incident light of about 425 nanometers of about 300-.
After applying laying, photopolymer layer is applied on the laying.Photopolymer layer preferably includes the SBC sill.Photopolymer preferably is laminated on the laying by applying optional sealant or tackifier.Then, by heating photopolymer layer is merged on the surface of laying.Photopolymer layer preferably after applying, or at the inner surface of sleeve matrix behind radiant exposure, be ground to preset thickness.The thickness of photopolymer layer is preferably between about 1.0 and 1.5 millimeters.
The inner surface of sleeve matrix exposes with curing radiation then, so that radiation sees through each layer in the sleeve, makes photopolymer layer be cured to desired thickness and forms " version is basic ".Usually, this curing radiation comprises the UV radiation.Because laying is by forming this curing radiation material transparent, so sleeve can adopt routine " back-exposure " step to solidify internally.This can save the time of preparation photopolymer, reduces waste material, and can make image processing person improve printing quality by selecting to change visual relief depth.
Preferably, but this method also comprise with ablation applying coating photopolymer layer.But the effect of ablation coating is to protect photopolymer layer to avoid the effect of UV light, and photopolymer layer (above the version base) uncured before preventing from thus to use is solidified.
In another embodiment of the invention, this method is included in and applies one deck barrier layer between laying and the photopolymer layer, be about to barrier layer and be applied on the laying, and photopolymer layer is applied on the barrier layer.Barrier layer preferably comprises film forming polymer such as acrylic resin or polyvinylidene chloride.Preferably, the thickness of barrier layer is between about 0.015 and 0.050 millimeter, more preferably about 0.25 millimeter.Photopolymer layer preferably is laminated on the barrier layer, with melt process it is merged mutually with barrier layer then.
The sleeve blank that comprises (uncured) photopolymer layer that makes can adopt the used conventional equipment in this area to carry out imaging and processing.
Therefore, feature of the present invention provide be used for the flexographic printing field comprise becoming photopolymer sleeve blank whole, radioparent laying.Other features and advantages of the present invention can obtain understanding from following explanation, accompanying drawing and appended claims.
Fig. 1 is the cross-sectional view according to the photopolymer sleeve blank of one embodiment of the invention; With
Fig. 2 is a flow diagram of making the method for photopolymer sleeve blank according to an embodiment of the invention.
Compare with the method for the prior art that comprises laying, embodiment of the present invention has some advantages.By adopting, can adopt " back-exposure " step of conventional method that the version base of photopolymer layer is hardened to radioparent laying.In addition, because the terminal use is provided used sleeve blank, thereby the terminal use can obtain the printed matter of better quality by the degree of depth that changes relief image.
Shown in Figure 1 is an embodiment with photopolymer sleeve blank 10 of no joint surface, and this sleeve comprises sleeve matrix 12, laying 14, optional barrier layer 16 and photopolymer layer 18.Sleeve matrix 12 is thin-walled hollow circle tube sleeves, and it is between about 0.01 and 6.35 millimeter that this matrix preferably includes wall thickness, the fiber-reinforced polymeric resin between more preferably about 0.60 and 0.80 millimeter.The example that can be used for a sleeve basal body structure of the present invention has been disclosed in the United States Patent (USP) 6703095 of generally assigning.This cylindrical base is expandable under fluid pressure, has fluid sealability when cylinder, mandrel etc. are gone up when sleeve is contained in.
As shown in Figure 1, laying 14 is applied on the sleeve matrix 12.Preferably, the thickness of this laying is between about 0.25 and 3.25 millimeter, between more preferably about 1.0 and 1.50 millimeters.Laying can comprise perforate or closed-cell foam material or soft alternative material.Laying is preferred to be transparent to those UV radiation wavelengths that cause the photopolymer layers of polymer at least, and by the one-tenth assignment system of this radiation of transmissive.What preferably adopt is aliphatic urethane.Its UV light transmission is preferably about 20% to up to 80%, yet as you know, degree of transmission is changeable.Transparency can be regulated by the selection of material, the thickness and the mutually combining of voidage and pore size of layer.
As shown in Figure 1, the optional barrier layer 16 that applies is applied on the laying.It is transparent that barrier layer is also tackled the UV radiation, preferably includes the film that acrylic resin or polyvinylidene chloride form, and its thickness is between about 0.015 millimeter and 0.050 millimeter, more preferably about.0.025 millimeter (about 1 mil).
The flow diagram of Fig. 2 has illustrated makes the general proxy property step of photopolymer sleeve blank according to embodiments of the present invention.Step 20 provides the sleeve matrix.Step 22 is that laying is applied on the sleeve matrix, preferably is coated with by rotational casting, extrusion molding or scraper plate or scraper is coated with laying is applied on the sleeve matrix.In step 24 by technical known method for example grinding stone grind laying be ground to desired thickness.
Preferably will choose thin barrier layer wantonly by the scraper coating in step 26 is applied on the laying.Barrier layer thickness is preferably about 0.001 inch-Yue 0.010 inch (0.002-0.025 centimetre).Between this is two-layer, can apply the adhesive of the optional transmission UV of one deck.The heat that is produced preferably applies one deck barrier layer on the laying, so that can not produce undesirable side effects such as delamination or produce bubble to unexposed photopolymer layer when photopolymer layer merges mutually with barrier layer.In addition, barrier layer should have enough adhesions to laying and unexposed photopolymer layer, is included in all processing steps that use on flexographic presses or the intaglio press thereby make unexposed photopolymer layer can bear the purposes of wishing according to the user.
In step 28, photopolymer layer is applied on the barrier layer with lamellar form.Preferably by making photopolymer layer mutually laminated with barrier layer at barrier layer surface applied thin sealant or tackifier.Be enough to make the heat of photopolymer partial melting that photopolymer layer is merged mutually with barrier layer by applying then, so that any seam is eliminated substantially because of flowing together.Preferably, photopolymer layer merges by infrared heating.Then, can conventional method such as grinding stone grind the photopolymer surfacing to desired wall thickness (step 32).
In step 30, form " version base " by back-exposure, radiation is carried out " back-exposure " through matrix, laying and barrier layer to the part of version base to be formed in the unexposed photopolymer layer in this step.Radiation source is preferably linear light sorurce as being placed on the spherical or tubular light source in the sleeve matrix.Usually, radiation source is that wave-length coverage is the ultra-violet radiation of about 300 nanometers-Yue 425 nanometers.After the curing, preferably use conventional method (step 32) that the photopolymer surface is ground to required thickness, accurately formed the version base thus.
After the grinding photopolymer layer, preferably sleeve is cleaned and the thin layer of surface applied one deck ablation coating such as LAMS coating.
The sleeve that makes comprises and contains to become whole laying, can adopt conventional equipment to carry out the sleeve blank of the imaging at any time of imaging and processing in the tubulose mode.The photopolymer layer outer surface of sleeve can carry out imaging according to technical well-known method and produce projection or the recessed relief surface that supplies flexographic printing and/or intaglio printing to use.For example, photopolymer layer can be carried out imaging to form the relief surface of image by actinic radiation, mechanical grinding or laser ablation.The sleeve of making can print high-quality printed matter.
Though by relevant embodiment preferred the present invention has been done detailed description, as you know, under the prerequisite that does not depart from the scope of the invention, the present invention can have various variants and change.
Claims (34)
1. a manufacturing is used for the method for the photopolymer sleeve blank of flexographic printing, and this method comprises:
A cylindrical sleeve matrix that comprises inner surface and outer surface is provided;
On the outer surface of described sleeve matrix, apply one deck laying; Described laying is a substantially transparent to curing radiation;
On described laying, apply one deck photopolymer layer; And
Inner surface to described sleeve matrix is cured radiant exposure, and wherein said radiation sees through sleeve and makes with the photopolymer layer of the described segment thickness of described laying adjacency and solidify substantially.
2. the process of claim 1 wherein that described sleeve matrix is selected from fibre-reinforced fluoropolymer resin or plastics.
3. the process of claim 1 wherein the thickness of described sleeve matrix be about 0.01 and about 6.35 millimeters between.
4. the process of claim 1 wherein described sleeve matrix thickness be about 0.60 and about 0.80 millimeter between.
5. the process of claim 1 wherein that described laying is selected from the alternative material of open-cell foam materials, closed-cell foam material or volume.
6. the process of claim 1 wherein that described radiation comprises the UV radiation.
7. the method for claim 6, wherein said laying is about 20%-about 80% to the transmissivity of the incident uv of about 300 nanometers-Yue 425 nanometers.
8. the process of claim 1 wherein that the thickness of described laying is between about 3.25 millimeters of about 0.25-.
9. the process of claim 1 wherein the thickness of described laying be about 1.0 and about 1.50 millimeters between.
10. the process of claim 1 wherein that described laying is applied on the described sleeve matrix by rotational casting, extrusion molding or scraper plate coating or scraper coating.
11. the process of claim 1 wherein that described laying is bonded on the sleeve matrix with adhesive.
12. the method for claim 1 is included in and grinding is carried out to reach preset thickness in the surface of described laying after applying described laying.
13. the process of claim 1 wherein that described photopolymer layer comprises the SBC sill.
14. the method for claim 1 comprises described photopolymer layer is laminated on the laying.
15. the method for claim 1 comprises by heating making described photopolymer fusion on the surface of described laying.
16. the method for claim 1 is included in and grinding is carried out to reach preset thickness in the surface of described photopolymer layer after applying described photopolymer layer.
17. the method for claim 1, the inner surface that is included in described sleeve matrix carries out grinding to reach preset thickness to described photopolymer laminar surface behind radiant exposure.
18. the process of claim 1 wherein that the thickness of described photopolymer layer is between about 1.0-1.5 millimeter.
19. the method for claim 1 comprises with the described photopolymer layer of ablation applying coating.
20. the process of claim 1 wherein that the segment thickness of the described photopolymer layer of solidifying is about 0.005 inch-Yue 0.050 inch.
21. the method for claim 1 is included on the described photopolymer sleeve blank and forms image.
22. pass through the no seam photopolymer sleeve blank that the method for claim 1 forms.
23. a manufacturing is used for the method for the photopolymer sleeve blank of flexographic printing, this method comprises:
A cylindrical sleeve matrix that comprises inner surface and outer surface is provided;
On the outer surface of described sleeve matrix, apply one deck laying; Described laying is transparent to curing radiation basically;
On described laying, apply one deck barrier layer;
On described barrier layer, apply one deck photopolymer layer; And
Inner surface to described sleeve matrix is cured radiant exposure, and wherein said radiation sees through described sleeve solidifies a part of thickness of described photopolymer layer substantially.
24. the method for claim 23, wherein said barrier layer comprises film forming polymer.
25. the method for claim 23, wherein said barrier layer comprises acrylic resin or polyvinylidene chloride.
26. the method for claim 23, the thickness of wherein said barrier layer be about 0.015 and about 0.050 millimeter between.
27. the method for claim 23, the thickness of wherein said barrier layer are about 0.25 millimeter.
28. the method for claim 23, wherein said sleeve matrix is selected from fibre-reinforced fluoropolymer resin or plastics.
29. the method for claim 23, wherein said laying are selected from the alternative material of open-cell foam materials, closed-cell foam material or volume.
30. the method for claim 23, wherein radiation comprises the UV radiation, and wherein said laying is about 20%-about 80% to the transmissivity of the incident uv of about 300 nanometers-Yue 425 nanometers.
31. the method for claim 23, wherein said photopolymer layer comprises the SBC sill.
32, the method for claim 23 comprises described photopolymer layer is laminated on the described barrier layer.
33. the method for claim 23 comprises by heating making described photopolymer layer fusion on the surface of described barrier layer.
34. the method for claim 1 is included on the described photopolymer sleeve blank and forms image.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US56897804P | 2004-05-07 | 2004-05-07 | |
| US60/568,978 | 2004-05-07 | ||
| US11/124,400 | 2005-05-06 |
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| Publication Number | Publication Date |
|---|---|
| CN1946554A true CN1946554A (en) | 2007-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200580012769 Pending CN1946554A (en) | 2004-05-07 | 2005-05-09 | Method of making a photpopolymer sleeve blank having an integral UV transparent cushion layer for flexographic printing |
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| CN (1) | CN1946554A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101855084B (en) * | 2007-09-10 | 2012-11-14 | 爱克发印艺公司 | Method of making a flexographic printing sleeve forme |
| CN107073997A (en) * | 2014-10-15 | 2017-08-18 | 康蒂泰克弹性体涂料有限公司 | Printing sleeve and the method for producing printing sleeve |
| CN111845028A (en) * | 2020-07-08 | 2020-10-30 | 深圳九星印刷包装集团有限公司 | Manufacturing method of mould pressing plate roller |
-
2005
- 2005-05-09 CN CN 200580012769 patent/CN1946554A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101855084B (en) * | 2007-09-10 | 2012-11-14 | 爱克发印艺公司 | Method of making a flexographic printing sleeve forme |
| CN107073997A (en) * | 2014-10-15 | 2017-08-18 | 康蒂泰克弹性体涂料有限公司 | Printing sleeve and the method for producing printing sleeve |
| CN107073997B (en) * | 2014-10-15 | 2019-06-11 | 康蒂泰克弹性体涂料有限公司 | Printing sleeve and method for producing printing sleeve |
| CN111845028A (en) * | 2020-07-08 | 2020-10-30 | 深圳九星印刷包装集团有限公司 | Manufacturing method of mould pressing plate roller |
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