US2637752A - Manufacturing leather substitute - Google Patents
Manufacturing leather substitute Download PDFInfo
- Publication number
- US2637752A US2637752A US116225A US11622549A US2637752A US 2637752 A US2637752 A US 2637752A US 116225 A US116225 A US 116225A US 11622549 A US11622549 A US 11622549A US 2637752 A US2637752 A US 2637752A
- Authority
- US
- United States
- Prior art keywords
- leather substitute
- manufacturing leather
- substitute
- mixture
- centimeter
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
-
- 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
- This invention relates to a novel article of manufacture which is adapted to substitute leather in its various uses and is composed of rubber admixed with textile fibres cut to very short length. The best results are obtained by using cotton fibre.
- the method of manufacture is as follows.
- the rubber is ground as usual in the mixer. As soon as a sheet, which may even not be continuous, is formed on the front cylinder, accelerators, pigments or dyes and the finely comminuted vegetable fibres are incorporated therewith after having submitted them to a dyeing bath with aniline dyes and successively dried in an oven.
- the mixture After coarse mixing, the mixture is fed through narrowly clamped cylinder of a refining machine. this operation being repeated several times, till a satisfactory homogenous sheet is obtained.
- the mixture is then returned to the mixer and admixed with the remaining fillers, as zinc white, carbon black, kaolin, talc, etc. whereupon the vulcanizer is added.
- the cylinders are kept cool during the above operations.
- the resulting mixture may be drawn to the desired thickness on the cylinders of the mixer, if intended to be pressed. If the mixture is to be transformed into calendered sheets, it is first admixed with considerable quantities of plasticisers adapted to be vulcanised. The rolls of the calender shall be likewise kept cool.
- Vulcanisation in the press or in an autoclave is carried out by the usual methods at low temperatures and over longer periods.
- the pressed or calendered products may be polished in order to confer a chamois leather aspect to the surfaces of the articles.
- Example A mixture is first formed in the above described manner, of approximately the following composition by weight in per cent:
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Description
Patented May 5, 1953 UNITED STATES PATENT OFFICE No Drawing. Application September 16, 1949, Se-
rial No. 116,225. In Italy November 25, 1948 1 Claim.
This invention relates to a novel article of manufacture which is adapted to substitute leather in its various uses and is composed of rubber admixed with textile fibres cut to very short length. The best results are obtained by using cotton fibre.
The method of manufacture is as follows.
The rubber is ground as usual in the mixer. As soon as a sheet, which may even not be continuous, is formed on the front cylinder, accelerators, pigments or dyes and the finely comminuted vegetable fibres are incorporated therewith after having submitted them to a dyeing bath with aniline dyes and successively dried in an oven.
After coarse mixing, the mixture is fed through narrowly clamped cylinder of a refining machine. this operation being repeated several times, till a satisfactory homogenous sheet is obtained.
The mixture is then returned to the mixer and admixed with the remaining fillers, as zinc white, carbon black, kaolin, talc, etc. whereupon the vulcanizer is added.
The cylinders are kept cool during the above operations.
The resulting mixture may be drawn to the desired thickness on the cylinders of the mixer, if intended to be pressed. If the mixture is to be transformed into calendered sheets, it is first admixed with considerable quantities of plasticisers adapted to be vulcanised. The rolls of the calender shall be likewise kept cool.
Vulcanisation in the press or in an autoclave is carried out by the usual methods at low temperatures and over longer periods.
Upon completion of vulcanisation, the pressed or calendered products may be polished in order to confer a chamois leather aspect to the surfaces of the articles.
Example A mixture is first formed in the above described manner, of approximately the following composition by weight in per cent:
Smoke sheets 48.00 Colored fibres 32.00 Stearic acid 0.45 Zinc oxide- 4.00 Ventilated sulphur 1.50 Tetraethylthiuram disulfide 0.15 Mercaptobenzothiazol dlsulfide 0.55 Mineral oil 1.50 Phenylbetanaphthylamine 0.45 Carbon black 11.50
The above mix is vulcanised. in moulds under a press at the temperature of about 125 C. during about 15 minutes at a pressure of about 50 lag/sq. centimeter. A product of the black chamois type is obtained, which may usefully be employed in, all cases in which black chamois leather is usually employed.
Samples of this product submitted to tests have given the following results:
Abrasion index (over 1000 meter path under a pressure of kg. 6,200) millimeters 0.2 Tensile stress kg./sq. centimeter 61 Residual track (after 50 minutes under a load of kg./sq. centimeter) millimeters 0.14
Waterproofness-No cracking or breakage after 15 minutes tests on test samples subjected to an hydraulic pressure of 4 atmospheres without supporting crate, pressure unaltered.
What I claim is:
Method of manufacturing a leather substitute of the chamois type, consisting in forming a mix of approximately the following composition by Weight per cent:
Smoked sheets 18.00 Colored fibres 32.00 Stearic acid 0.15 Zinc oxide 4.00 Ventilated sulphur 1.50 Tetraethylthiuram disulfide 0.15 Mercaptobenzothiazol disulfide 0.55 Mineral oil 1.50 Phenylbetanaphthylamine 0.45 Carbon black 11.50
and in vulcanizing said mix in molds under a press at a temperature of about C. during about 15 minutes at a pressure of about 50 kg. 'sq. centimeter.
LUCIANO VALENTINI.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,326,681 Matthaei Dec. 30, 1919 1,928,356 Haertel Sept. 26, 1933 2,013,553 Day Sept. 3, 1935 2,039,529 Guinzburg May 5, 1936 2,180,906 Maywald Nov. 21, 1939 2,273,206 Kuhn Feb. 17, 1942 OTHER REFERENCES Pearson's Crude Rubber and Compounding Ingredients," third edition, New York, 1918, pages 356-357.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2637752X | 1948-11-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2637752A true US2637752A (en) | 1953-05-05 |
Family
ID=11435657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US116225A Expired - Lifetime US2637752A (en) | 1948-11-25 | 1949-09-16 | Manufacturing leather substitute |
Country Status (1)
Country | Link |
---|---|
US (1) | US2637752A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2891621A (en) * | 1954-03-09 | 1959-06-23 | Ideco Inc | Retrieving tool for well bores |
US3450521A (en) * | 1964-04-20 | 1969-06-17 | Monsanto Co | Herbicidal n-halo-alpha-haloacetanilides |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1326681A (en) * | 1919-12-30 | matthaei | ||
US1928356A (en) * | 1931-03-20 | 1933-09-26 | Haertel Hans Richard | Rubberized material |
US2013553A (en) * | 1932-11-18 | 1935-09-03 | Dewey And Almy Chemical Co. | Fiber-rubber product |
US2039529A (en) * | 1934-03-01 | 1936-05-05 | Kleinert I B Rubber Co | Rubber products |
US2180906A (en) * | 1936-05-04 | 1939-11-21 | Maywald Fleming Patents Compan | Rubber compound and process of making same |
US2273206A (en) * | 1939-07-24 | 1942-02-17 | John W Kuhn | Method and apparatus for incorporating fibrous material in rubber |
-
1949
- 1949-09-16 US US116225A patent/US2637752A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1326681A (en) * | 1919-12-30 | matthaei | ||
US1928356A (en) * | 1931-03-20 | 1933-09-26 | Haertel Hans Richard | Rubberized material |
US2013553A (en) * | 1932-11-18 | 1935-09-03 | Dewey And Almy Chemical Co. | Fiber-rubber product |
US2039529A (en) * | 1934-03-01 | 1936-05-05 | Kleinert I B Rubber Co | Rubber products |
US2180906A (en) * | 1936-05-04 | 1939-11-21 | Maywald Fleming Patents Compan | Rubber compound and process of making same |
US2273206A (en) * | 1939-07-24 | 1942-02-17 | John W Kuhn | Method and apparatus for incorporating fibrous material in rubber |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2891621A (en) * | 1954-03-09 | 1959-06-23 | Ideco Inc | Retrieving tool for well bores |
US3450521A (en) * | 1964-04-20 | 1969-06-17 | Monsanto Co | Herbicidal n-halo-alpha-haloacetanilides |
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