US2004508A - Process for the manufacture of printing rollers - Google Patents
Process for the manufacture of printing rollers Download PDFInfo
- Publication number
- US2004508A US2004508A US584288A US58428831A US2004508A US 2004508 A US2004508 A US 2004508A US 584288 A US584288 A US 584288A US 58428831 A US58428831 A US 58428831A US 2004508 A US2004508 A US 2004508A
- Authority
- US
- United States
- Prior art keywords
- caoutchouc
- rollers
- gelatine
- manufacture
- printing rollers
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title description 4
- 238000004519 manufacturing process Methods 0.000 title description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 12
- 239000001828 Gelatine Substances 0.000 description 10
- 229920000159 gelatin Polymers 0.000 description 10
- 235000019322 gelatine Nutrition 0.000 description 10
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 9
- 229920001195 polyisoprene Polymers 0.000 description 9
- 235000011187 glycerol Nutrition 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000012213 gelatinous substance Substances 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011872 intimate mixture Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- -1 naphtha Chemical compound 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/02—Direct processing of dispersions, e.g. latex, to articles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2321/00—Characterised by the use of unspecified rubbers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S524/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S524/925—Natural rubber compositions having nonreactive materials, i.e. NRM, other than: carbon, silicon dioxide, glass titanium dioxide, water, hydrocarbon or halohydrocarbon
Definitions
- gelatine rollers easily become brittle and unelastic through the colours or dye-stuff penetrating into them and are apt to get soft when an increased temperature is used, so that they lose their shape andmust be recast many a time.
- the purpose of the present invention now is to avoid these disadvantages and obtain a combination of the advantages named as well as an intimate mixture of both original products, and especially to produce a greater durability of the rollers in connection with the colours added and an increased resistance with regards to the organic solving means.
- a fluid caoutchouc-milk is intimately mixed with glycerine as well as with colloidal bodies, such as molten gelatine, and heated together therewith until a uniform, homogeneous mass is obtained, which can easily be cast into moulds or otherwise worked up to obtain any desired shapes.
- caoutchouc-milk concentrations such as revertex
- concentrations can easily be in their aqueous state intimately mixed with glycerine as well as with colloidal bodies, such as molten gelatine, whereby a product is obtained which can easily be cast and shaped and. is consequently particularly adapted to be used for rollers, because of containing the qualities and advantages of both caoutchouc as well as gelatine-mass used up to now.
- the fluid mass thus obtained is for instance cast into the shape of a roller and on its cooling down the cover is removed, it only remains to dip the same, for the purpose of coagulating the caoutchouc-particles, into acetic acid or into other known means for hardening the caoutchouc and to then vulcanize the same in any known manner.
- 20 kilos caoutchouc-concentration and 20 kilos gelatine are melted together with 40 kilos glycerine and stirred until a uniform and homogeneous mass is obtained.
- This mass can also be coloured by adding dye-stuff thereto and made heavier by means of chemicals or the like.
- the process of making printing rollers including the steps of mixing substantially one part concentrated aqueous caoutchouc dispersion one part gelatinous substance and two parts glycerine, coagulating the mixture, and vulcanizing the coagulate.
- the process of making printing rollers including the steps of intimately mixing substantially one part heated concentrated aqueous caoutchouc dispersion, one part molten gelatinous substance. and two parts heated glycerine, molding the resulting homogeneous mass to the desired shape, cooling the roller to a solidified state, treating the roller with an aqueous-caoutchouc-dispersion coagulant, and vulcanizing the roller.
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Printing Plates And Materials Therefor (AREA)
Description
Patented June 11, 1935 UNITED STATES PROCESS FOR THE MANUFACTURE OF PRINTING ROLLERS Curt Neubert, Giersdorf, near Hirschberg, Germany N Drawing.
Application December 31, 1931,
Serial No. 584,288. In Germany January 8,
2 Claims.
Experiments in using rubber or caoutchouc rollers instead of gelatine rollers in rotary printing and like arts have frequently been made in the past. They have, however, not led to the desired result, as it was not possible to produce rubber and caoutchouc rollers of qualities somewhat similar to those of gelatine rollers, because the rubber or caoutchouc rollers all, to a greater or less extent, have the same disadvantage of swelling and changing their surface as soon as they get into contact with organic solving means, and further of inducing the colour to dry up too quickly and of lacking the quality of adhesion characteristic of gelatine rollers. On the other hand gelatine rollers easily become brittle and unelastic through the colours or dye-stuff penetrating into them and are apt to get soft when an increased temperature is used, so that they lose their shape andmust be recast many a time.
An intimate connection between the caoutchouc and the gelatine mass was not possible up to now, because solutions of caoutchouc could only be obtained by means of benzine, naphtha, benzol or the like, which latter, however, were repelled by the gelatine mass containing water.
The purpose of the present invention now is to avoid these disadvantages and obtain a combination of the advantages named as well as an intimate mixture of both original products, and especially to produce a greater durability of the rollers in connection with the colours added and an increased resistance with regards to the organic solving means.
For this purpose according to the invention a fluid caoutchouc-milk is intimately mixed with glycerine as well as with colloidal bodies, such as molten gelatine, and heated together therewith until a uniform, homogeneous mass is obtained, which can easily be cast into moulds or otherwise worked up to obtain any desired shapes.
In special there are used for this purpose preferably so-called caoutchouc-milk concentrations, such as revertex, only known since a short time. These concentrations can easily be in their aqueous state intimately mixed with glycerine as well as with colloidal bodies, such as molten gelatine, whereby a product is obtained which can easily be cast and shaped and. is consequently particularly adapted to be used for rollers, because of containing the qualities and advantages of both caoutchouc as well as gelatine-mass used up to now.
At the same time it is possible to change the quantities of the caoutchouc-concentrations in relation to the quantities of the other components, such as glycerine, gelatine, at will and adapt them to any purpose for which the rollers are to be used.
If the fluid mass thus obtained is for instance cast into the shape of a roller and on its cooling down the cover is removed, it only remains to dip the same, for the purpose of coagulating the caoutchouc-particles, into acetic acid or into other known means for hardening the caoutchouc and to then vulcanize the same in any known manner.
By way of example the following ingredients are given for the quantities to be used:
20 kilos caoutchouc-concentration and 20 kilos gelatine are melted together with 40 kilos glycerine and stirred until a uniform and homogeneous mass is obtained. This mass can also be coloured by adding dye-stuff thereto and made heavier by means of chemicals or the like.
What I claim is:
l. The process of making printing rollers including the steps of mixing substantially one part concentrated aqueous caoutchouc dispersion one part gelatinous substance and two parts glycerine, coagulating the mixture, and vulcanizing the coagulate.
2. The process of making printing rollers including the steps of intimately mixing substantially one part heated concentrated aqueous caoutchouc dispersion, one part molten gelatinous substance. and two parts heated glycerine, molding the resulting homogeneous mass to the desired shape, cooling the roller to a solidified state, treating the roller with an aqueous-caoutchouc-dispersion coagulant, and vulcanizing the roller.
CURT NEUBERT.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2004508X | 1931-01-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2004508A true US2004508A (en) | 1935-06-11 |
Family
ID=7950877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US584288A Expired - Lifetime US2004508A (en) | 1931-01-08 | 1931-12-31 | Process for the manufacture of printing rollers |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2004508A (en) |
-
1931
- 1931-12-31 US US584288A patent/US2004508A/en not_active Expired - Lifetime
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