CA1162114A - Process for finishing ropes - Google Patents
Process for finishing ropesInfo
- Publication number
- CA1162114A CA1162114A CA000390549A CA390549A CA1162114A CA 1162114 A CA1162114 A CA 1162114A CA 000390549 A CA000390549 A CA 000390549A CA 390549 A CA390549 A CA 390549A CA 1162114 A CA1162114 A CA 1162114A
- Authority
- CA
- Canada
- Prior art keywords
- ropes
- belts
- weight
- hoses
- braided lines
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
- D07B7/02—Machine details; Auxiliary devices
- D07B7/12—Machine details; Auxiliary devices for softening, lubricating or impregnating ropes, cables, or component strands thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/356—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of other unsaturated compounds containing nitrogen, sulfur, silicon or phosphorus atoms
- D06M15/3562—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of other unsaturated compounds containing nitrogen, sulfur, silicon or phosphorus atoms containing nitrogen
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Reinforced Plastic Materials (AREA)
- Ropes Or Cables (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Luminescent Compositions (AREA)
Abstract
A PROCESS FOR FINISHING ROPES
Abstract of the Disclosure Ropes, braided lines, belts, hoses and the like with improved abrasion-resistance are obtained in that they are impregnated with a finish comprising of a mixture of a vinyl pyridine copolymer latex, a form-aldehyde resin precondensate, formaldehyde, water and optionally dye, the impregnated ropes, braided lines, belts and hoses are dried and then subjected to a heat treatment at 130 to 180°C.
Abstract of the Disclosure Ropes, braided lines, belts, hoses and the like with improved abrasion-resistance are obtained in that they are impregnated with a finish comprising of a mixture of a vinyl pyridine copolymer latex, a form-aldehyde resin precondensate, formaldehyde, water and optionally dye, the impregnated ropes, braided lines, belts and hoses are dried and then subjected to a heat treatment at 130 to 180°C.
Description
This invention relates to a process for finishing ropes, braided lines, belts, hoses and the like, preferably of synthetic fibre or filament yarns. The finishing process according to the invention considerably improves abrasion-resistance and stability of shape.
Folded, twisted and braided ropes and braided lines and woven and braided belts of synthetic fibre and filament yarns are distinguished in particular by high lin~ar tensile strength whereas their abrasion-resistance is not always satisfactory. Ropes,especially with large croSs-sections~are not sufficiently ret~ining shape by la~eral pressure.
There are n~merous applications of ropes, braided lines and ~elts ---where ~i~h resistance to abrasion and wear and stability of shape is required in addition to high linear tensile stren~th.
Examples for such applications include lifting belts, lifting slings, lashings, paper guiding ropes, round drive belts and hoses.
The surfaces roughen at an early stage in their use as a result o scuffing and rubbing. The outer group of filaments or individual filaments or individual fibres are pulled out and torn. Ropes!braided lines, belts, hoses and the like which wear in this way therefore have only a short useful life.
In order to make the contact surfaces of ropes, braided lineq, belts, hoses, etc. more resistant, it is possible, for example, to increase the degree of twist of the yarns or strands. However, this red~lces linear tensile strength and increases elongation. The same happens if the floats are shortened by the initiation of thermal shrinkage because, in that case, too, maximum tensile strength decreases linearly whilst elongation increases. ~.part from the disadv~ :ages mentioned, neither method leads to a significant increase in resistance to wear.
It is known that ropes, braided lines and belts, etc. may be provided with stiffening or tackifying finishes, such as these provided by silica solutions, vinyl acetate, v,inyl chloride and acrylate dispersions. The finishes are applied either by spraying or by dipping, followed Le A 20 758 l ~2114 ,, by dryin~. Experience hdq sho~m that such aftertreatlllents ollly delay l,.ecila[lical wear for a short time. The stability against lateral pressure is not i~proved.
The materials used for the ropes, braided lines, belts and hoses, etc are generally polyamide, polyethylene, polypropylene or polyester filament yarns, preferably polyamide filament yarns.
Suitable polyamides are, for example, polyamide-6, polyamide-6,6 and aromatic polyamides of metaphenylene lo diamine and isophthalic acid or paraphenylene diamine and terephthalic acid.
The object of the present invention is to provide a finishing process for ropes, braided lines and belts, etc., particularly of synthetic filament yarns which reduces abrasion-wear, particularly in the outer region and improves stability of shape against lateral, It has now been found that ropes, braided lines, belts and hoses, which normally show signs of wear beginnlng ~rom outside in the event of heavy mechanical stressing, i.P. for example by scuffing and rubbing, do not wear so quickly if they are impregnated with a finish consisting of a mixture of vinyl pyridine copolymer latex, a formaldehyde resin precondensate, formaldehvde, water and optionally an antiager and a dye, and thereafter dried and finally subjected to a heat treatment of 130C to 180C
The finishing composition is applied by dipping, padding or spraying. It penetrates into the ropes, braided lines, belts, etc. where after condensation it ensures that each filament or individual fibre remains in position and shape and is thus protected against abrasion.
30 The ropes,braided lines, belts and hoses, etc. may be unfixed or fixed.
Formaldehyde resin precondensated are understood to be, fcr example soluble precondensates of ureas, melamines and phenols with formaldehyde. A precond~nsed 35 resorcinol-formaldehyde resin is preferably used.
Le A 20 758 ~ 1~2114 Suitable comonomers for the vinyl pyridine copoly-mer latex are, in particular, butadiene and styrene. The latex/resin mixture may be prepared in such a way tha~ no unfavourable hardening occurs.
The necessary amount of dry matter applied should be between 5 and 20% by weight and preferably between 12 and 15~ by weiqh~, based on the weight of the dry, unfinished rope, braided lines, belt or hose material.
The penetration of the finish into the filament yarns and the quantities of dry matter applied may be adjusted to the raw materials, which are not always uniformly prepared, through regulation of the dry matter content of the impregnating liquid. Undesirable hardeninq which may occur through an increase in the dry matter content is counteracted by making the increase in the latex component only, i.e. without altering the amount of resin. This measure provides for very safe processing by adequate pot lives.
Mixtures of the following compocition are used for impregnation:
Parts by weight Liquid Solid .
a) Vinyl pyridine copolymer 25 latex (40%) aqueous250-900 100-360 Water 60-0 b) F'ormaldehyde resin pre-condensate (40~) aqueous 50 20 Water 250 Formaldehyde (30~), aqueous 20 6 The mixture has a dry matter content of from about 20 to 30~. The ratio by weight of vinyl pyridine copoly-merlatex to formaldehyde resin precondensate thus amounts to between 5:1 and 20:1 (dry matter).
Le A 20 758 ~ 162114 Constituents (a) and (b) of the mixture are sep-erately premixed, after which component (b~ is stirred slowly into component (a).
Impregnation is followed by drying at temperatures of from room temperature to 120C. The drying times range from about 10 minutes to 2 hours, the lower the drying temperature the longer the drying time required.
Drying is complete when the material is no longer tacky.
After drying, condensation is compieted by heating to 130-180C over a period of 1 to 10 mins. The vinyl pyridine copolymer latex may contair other constituents, for example up to 50~ of s-tyrene-butadiene rubber latex (SBR-latex).
Since the actual mechanical stressing (scuffing and rubbing) to which ropes, braided lines, belts, hoses, etc. are subjected is determined by numerous factors, it is extremely difficult to simulate the actual conditions for tests. There are no internationally accepted and standardised tests.The same holds true for the stability of shape.
EXAMPLE
After evacuation for lO min. in an autoclave, a round belt braided from Perlon filament yarn (dtex 18~0/7/16) and endlessly spliced is fixed with saturated steam for 15 minutes at 130C, After this process, in which the belt is not allowed to shrlnk, and after the belt has cooled to a sufficient extent on the tenter frame outside the autoclave, it is removed from the tenter frame and treated for 10 minutes in an impregnating bath consisting of 700 parts by weiqht of a 40~vinyl pyridine/
butadiene/styrene latex (containing l3.5 % by welght of vinyl pyridine, 6 parts by weight of an antiager (Vulkanox( ) BKF of Bayer AG, Leverkusen/FRG),-3 parts by weight OL carbon black dispersion (33 ~ by wt. solids), 50 parts by wt. of 40 ~ resorcinol formaldehyde precondensate, 250 parts by weight of water and 20 parts by weight of 30~ formaldehyde, subsequently dried in hot air and condensed for S to 10 minut~s in air heated to 150C. Thereafter, the amount of solids applied amount to 13~.
Le A 20 758 - 6 - :
The useful life of the round belt thus treated is several times that of an identical, but non-finished braided belt.
In principle, unfixed ropes, braided lines and belts, etc.
5 may be provided with the finish according to the inven-tion with equally good results. In this case, however, it is important to remember that ropes, braided lines, belts and hoses etc. made from yarns which shrink in cold water will shrink accordingly as a result of the water 10 present in the finishing compound. In addition, corresponding shrinkage will be caused by the hot air which is used for drying and condensing the finish.
Folded, twisted and braided ropes and braided lines and woven and braided belts of synthetic fibre and filament yarns are distinguished in particular by high lin~ar tensile strength whereas their abrasion-resistance is not always satisfactory. Ropes,especially with large croSs-sections~are not sufficiently ret~ining shape by la~eral pressure.
There are n~merous applications of ropes, braided lines and ~elts ---where ~i~h resistance to abrasion and wear and stability of shape is required in addition to high linear tensile stren~th.
Examples for such applications include lifting belts, lifting slings, lashings, paper guiding ropes, round drive belts and hoses.
The surfaces roughen at an early stage in their use as a result o scuffing and rubbing. The outer group of filaments or individual filaments or individual fibres are pulled out and torn. Ropes!braided lines, belts, hoses and the like which wear in this way therefore have only a short useful life.
In order to make the contact surfaces of ropes, braided lineq, belts, hoses, etc. more resistant, it is possible, for example, to increase the degree of twist of the yarns or strands. However, this red~lces linear tensile strength and increases elongation. The same happens if the floats are shortened by the initiation of thermal shrinkage because, in that case, too, maximum tensile strength decreases linearly whilst elongation increases. ~.part from the disadv~ :ages mentioned, neither method leads to a significant increase in resistance to wear.
It is known that ropes, braided lines and belts, etc. may be provided with stiffening or tackifying finishes, such as these provided by silica solutions, vinyl acetate, v,inyl chloride and acrylate dispersions. The finishes are applied either by spraying or by dipping, followed Le A 20 758 l ~2114 ,, by dryin~. Experience hdq sho~m that such aftertreatlllents ollly delay l,.ecila[lical wear for a short time. The stability against lateral pressure is not i~proved.
The materials used for the ropes, braided lines, belts and hoses, etc are generally polyamide, polyethylene, polypropylene or polyester filament yarns, preferably polyamide filament yarns.
Suitable polyamides are, for example, polyamide-6, polyamide-6,6 and aromatic polyamides of metaphenylene lo diamine and isophthalic acid or paraphenylene diamine and terephthalic acid.
The object of the present invention is to provide a finishing process for ropes, braided lines and belts, etc., particularly of synthetic filament yarns which reduces abrasion-wear, particularly in the outer region and improves stability of shape against lateral, It has now been found that ropes, braided lines, belts and hoses, which normally show signs of wear beginnlng ~rom outside in the event of heavy mechanical stressing, i.P. for example by scuffing and rubbing, do not wear so quickly if they are impregnated with a finish consisting of a mixture of vinyl pyridine copolymer latex, a formaldehyde resin precondensate, formaldehvde, water and optionally an antiager and a dye, and thereafter dried and finally subjected to a heat treatment of 130C to 180C
The finishing composition is applied by dipping, padding or spraying. It penetrates into the ropes, braided lines, belts, etc. where after condensation it ensures that each filament or individual fibre remains in position and shape and is thus protected against abrasion.
30 The ropes,braided lines, belts and hoses, etc. may be unfixed or fixed.
Formaldehyde resin precondensated are understood to be, fcr example soluble precondensates of ureas, melamines and phenols with formaldehyde. A precond~nsed 35 resorcinol-formaldehyde resin is preferably used.
Le A 20 758 ~ 1~2114 Suitable comonomers for the vinyl pyridine copoly-mer latex are, in particular, butadiene and styrene. The latex/resin mixture may be prepared in such a way tha~ no unfavourable hardening occurs.
The necessary amount of dry matter applied should be between 5 and 20% by weight and preferably between 12 and 15~ by weiqh~, based on the weight of the dry, unfinished rope, braided lines, belt or hose material.
The penetration of the finish into the filament yarns and the quantities of dry matter applied may be adjusted to the raw materials, which are not always uniformly prepared, through regulation of the dry matter content of the impregnating liquid. Undesirable hardeninq which may occur through an increase in the dry matter content is counteracted by making the increase in the latex component only, i.e. without altering the amount of resin. This measure provides for very safe processing by adequate pot lives.
Mixtures of the following compocition are used for impregnation:
Parts by weight Liquid Solid .
a) Vinyl pyridine copolymer 25 latex (40%) aqueous250-900 100-360 Water 60-0 b) F'ormaldehyde resin pre-condensate (40~) aqueous 50 20 Water 250 Formaldehyde (30~), aqueous 20 6 The mixture has a dry matter content of from about 20 to 30~. The ratio by weight of vinyl pyridine copoly-merlatex to formaldehyde resin precondensate thus amounts to between 5:1 and 20:1 (dry matter).
Le A 20 758 ~ 162114 Constituents (a) and (b) of the mixture are sep-erately premixed, after which component (b~ is stirred slowly into component (a).
Impregnation is followed by drying at temperatures of from room temperature to 120C. The drying times range from about 10 minutes to 2 hours, the lower the drying temperature the longer the drying time required.
Drying is complete when the material is no longer tacky.
After drying, condensation is compieted by heating to 130-180C over a period of 1 to 10 mins. The vinyl pyridine copolymer latex may contair other constituents, for example up to 50~ of s-tyrene-butadiene rubber latex (SBR-latex).
Since the actual mechanical stressing (scuffing and rubbing) to which ropes, braided lines, belts, hoses, etc. are subjected is determined by numerous factors, it is extremely difficult to simulate the actual conditions for tests. There are no internationally accepted and standardised tests.The same holds true for the stability of shape.
EXAMPLE
After evacuation for lO min. in an autoclave, a round belt braided from Perlon filament yarn (dtex 18~0/7/16) and endlessly spliced is fixed with saturated steam for 15 minutes at 130C, After this process, in which the belt is not allowed to shrlnk, and after the belt has cooled to a sufficient extent on the tenter frame outside the autoclave, it is removed from the tenter frame and treated for 10 minutes in an impregnating bath consisting of 700 parts by weiqht of a 40~vinyl pyridine/
butadiene/styrene latex (containing l3.5 % by welght of vinyl pyridine, 6 parts by weight of an antiager (Vulkanox( ) BKF of Bayer AG, Leverkusen/FRG),-3 parts by weight OL carbon black dispersion (33 ~ by wt. solids), 50 parts by wt. of 40 ~ resorcinol formaldehyde precondensate, 250 parts by weight of water and 20 parts by weight of 30~ formaldehyde, subsequently dried in hot air and condensed for S to 10 minut~s in air heated to 150C. Thereafter, the amount of solids applied amount to 13~.
Le A 20 758 - 6 - :
The useful life of the round belt thus treated is several times that of an identical, but non-finished braided belt.
In principle, unfixed ropes, braided lines and belts, etc.
5 may be provided with the finish according to the inven-tion with equally good results. In this case, however, it is important to remember that ropes, braided lines, belts and hoses etc. made from yarns which shrink in cold water will shrink accordingly as a result of the water 10 present in the finishing compound. In addition, corresponding shrinkage will be caused by the hot air which is used for drying and condensing the finish.
Claims (7)
1. A process for finishing ropes, braided lines, belts and hoses, comprising impregnating them with a finish comprising of a mixture of a vinyl pyridine copolymer latex, a formaldehyde resin precondensate, formaldehyde, and water, drying the impregnated ropes, braided lines, belts and hoses and subjecting them to a heat treatment at 130 to 180°C.
2. A process, as claimed in Claim 1, wherein the ropes, braided lines, belts and hoses consist of synthetic fiber or filament yarns.
3. A process, as claimed in Claim 1, comprising using a mixture of 250 to 900 parts by weight of a vinyl pyridine copolymer latex (40 %, aqueous), 250 to 310 parts by weight of water, 50 parts by weight of a formaldehyde resin precondensate (40 %, aqueous), and 20 parts by weight of formaldehyde (30 %, aqueous) for impregnation.
4. A process, as claimed in Claim 1, comprising vinyl pyridine copolymer latex containing up to 50 % of SBR latex.
5. A process, as claimed in Claim 1, comprising a quantity of dry matter applied of from 5 to 20 % by weight, based on the weight of the dry, non-finished ropes, braided lines, belts and hoses.
6. A process, as claimed in Claim 1, comprising a drying time of from 10 minutes to several hours and a condensation time of from 1 to 10 minutes.
7. A process, as claimed in Claim 1, wherein the mixture additionally contains an antiager and a dye.
Le A 20 758
Le A 20 758
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803044125 DE3044125A1 (en) | 1980-11-24 | 1980-11-24 | METHOD FOR EQUIPING ROPES |
| DEP3044125.9 | 1980-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1162114A true CA1162114A (en) | 1984-02-14 |
Family
ID=6117384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000390549A Expired CA1162114A (en) | 1980-11-24 | 1981-11-20 | Process for finishing ropes |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0052830A3 (en) |
| JP (1) | JPS57117676A (en) |
| CA (1) | CA1162114A (en) |
| DE (1) | DE3044125A1 (en) |
| DK (1) | DK519381A (en) |
| ES (1) | ES507373A0 (en) |
| NO (1) | NO813802L (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1417483A (en) * | 1982-09-30 | 1984-04-05 | Sws Silicones Corp. | Durable press resin composition |
| JP2018131720A (en) * | 2017-02-13 | 2018-08-23 | 幸衛 大竹 | Black resin processed rope |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3547729A (en) * | 1967-10-27 | 1970-12-15 | Firestone Tire & Rubber Co | Method of adhering rubber to a fabric employing a novel adhesive composition |
| US3663268A (en) * | 1970-05-25 | 1972-05-16 | Goodrich Co B F | Process for adhering polyester tire cord to rubber |
| CA1033136A (en) * | 1974-06-03 | 1978-06-20 | Ppg Industries, Inc. | Process for forming elastomer films |
| FR2360525A1 (en) * | 1976-08-04 | 1978-03-03 | Fiverel | Resin compsn. for improving polyester fibre to rubber bond - contains phenolic resin, vinyl pyridine latex and butadiene -styrene! latex |
| DE2841401C2 (en) * | 1978-09-22 | 1984-10-31 | Johann Dipl.-Chem. Dr. 8042 Oberschleißheim Sprung | Vulcanizable rubber compounds |
-
1980
- 1980-11-24 DE DE19803044125 patent/DE3044125A1/en not_active Withdrawn
-
1981
- 1981-11-10 NO NO813802A patent/NO813802L/en unknown
- 1981-11-11 EP EP81109610A patent/EP0052830A3/en not_active Withdrawn
- 1981-11-20 CA CA000390549A patent/CA1162114A/en not_active Expired
- 1981-11-23 DK DK519381A patent/DK519381A/en not_active Application Discontinuation
- 1981-11-23 ES ES507373A patent/ES507373A0/en active Granted
- 1981-11-24 JP JP56187086A patent/JPS57117676A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NO813802L (en) | 1982-05-25 |
| JPS57117676A (en) | 1982-07-22 |
| DE3044125A1 (en) | 1982-07-15 |
| EP0052830A2 (en) | 1982-06-02 |
| ES8300904A1 (en) | 1982-11-01 |
| ES507373A0 (en) | 1982-11-01 |
| EP0052830A3 (en) | 1983-12-07 |
| DK519381A (en) | 1982-05-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |