GB1564128A - Method of preparing metal surface - Google Patents
Method of preparing metal surface Download PDFInfo
- Publication number
- GB1564128A GB1564128A GB4331276A GB4331276A GB1564128A GB 1564128 A GB1564128 A GB 1564128A GB 4331276 A GB4331276 A GB 4331276A GB 4331276 A GB4331276 A GB 4331276A GB 1564128 A GB1564128 A GB 1564128A
- Authority
- GB
- United Kingdom
- Prior art keywords
- belt
- temperature
- coating
- resin
- parts
- 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
- 238000000034 method Methods 0.000 title claims description 43
- 239000002184 metal Substances 0.000 title claims description 28
- 239000011248 coating agent Substances 0.000 claims description 29
- 238000000576 coating method Methods 0.000 claims description 29
- 239000000203 mixture Substances 0.000 claims description 28
- 239000011347 resin Substances 0.000 claims description 21
- 229920005989 resin Polymers 0.000 claims description 21
- 239000002904 solvent Substances 0.000 claims description 21
- 239000010439 graphite Substances 0.000 claims description 18
- 229910002804 graphite Inorganic materials 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- 229920001721 polyimide Polymers 0.000 claims description 16
- 239000011521 glass Substances 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000009719 polyimide resin Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 13
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000314 lubricant Substances 0.000 claims description 7
- 229920001187 thermosetting polymer Polymers 0.000 claims description 7
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 5
- 239000004642 Polyimide Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000008096 xylene Substances 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 4
- 239000003085 diluting agent Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 4
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 238000011109 contamination Methods 0.000 claims description 2
- 238000005336 cracking Methods 0.000 claims description 2
- 239000013020 final formulation Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- 229920006259 thermoplastic polyimide Polymers 0.000 claims description 2
- 239000000463 material Substances 0.000 description 7
- 239000007921 spray Substances 0.000 description 3
- 229920002160 Celluloid Polymers 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000007496 glass forming Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000012442 inert solvent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
(54) METHOD OF PREPARING METAL SURFACES
(71) We, UNITED GLASS LIMITED, a British company of Kingston Road, Staines,
Middlesex, England, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:
This invention relates to the preparation of metal surfaces especially concerned with the coating of handling equipment used in the manufacture of glassware.
In the manufacture of glassware by automatic processes the molten glass issuing from the furnace is formed in the machine into the desired shape, and may then be transferred to a conveyor whence it is subsequently transferred to an annealing oven or lehr. While the glass is at an elevated temperature and is being handled on conveyors and by line transfer equipment the glass surface is extremely senstive to damage by hard or abrasive materials.
Furthermore the use in the handling equipment of a material of high thermal conductivity which may cause sudden cooling of the glass surface could result in the presence of small cracks in the glass surface.
In our co-pending U.K. Application No. 49838/75 (Serial No. 1562569) we have described a rigid non-metallic composite material which may be used to replace either metal or asbestos-based materials in glassware handling devices where it is convenient to effect this change. There are, however, a number of situations where it may not be readily possible to replace metal in use, or to readily effect a change to another material. These considerations apply for example when a particular part in use requires the mechanical properties of metal. A good example of this is the conveyor belt which carries bottles from the forming machine to the annealing lehr.When hot bottles are transferred onto this conveyor belt the high thermal conductivity of the metal may cause undue cooling of the glass, leading to cracks, and for this reason it is common practice to apply a graphitic dope frequently to the conveyor belt so as to provide an intermediate layer of carbon between the glass and the metal. There are however a number of unsatisfactory features about such a process, including the need to apply the dope frequently, and the manner in which the conveyor belt thereby becomes prone to absorption of oil which is subsequently transferred to the bottles resulting in indelible marking, and in possible damage to the glass surface.
It is well known that similar considerations apply to the treatment of blank moulds used in glass forming machines, and in recent years it has been found possible to replace the frequent treatment of the moulds with graphitic dope by a single treatment with a suitable material known as a solid film lubricant. Various lubricants of this type exist, and most commonly they consist of graphite in a suitable resin base. Since the resin has to withstand a high temperature there is a limited choice available, and polyimide resins are among those in use. Thus, it is known to apply mixtures of polyimide and graphite to the surfaces of blank moulds to be used for hot glass contact as a means of providing lubrication in replacement of graphitic dope.
However, the application of these solid film lubricants to the blank moulds is carried out by an off-line process which requires application of the coating and careful curing schedules, extending over periods of several hours. to ensure that the coating is satisfactory.
For certain metallic parts which come into contact with hot glass, for example conveyor belts, it can be most impractical to carry out such a treatment, and indeed once installed the conveyor belt generally remains in position for several months or years until failure of the belt ocurs. Furthermore, removal and re-installation of the belt are time consuming jobs, and can only be carried out during a period when the machine is idle or the moulds are being changed. These idle periods generally are of the order of one to two hours, and it would clearly be impossible to remove the belt, treat it, and re-install it within this period.
It is therefore an object of this invention to provide a method which will enable a conveyor belt or other item of metal equipment to be used for handling hot glassware to be treated in situ with a suitable resin-graphite system which can be cured to a satisfactory coating within the period between the manufacture of one type of glassware and another.
According to the present invention a method of preparing a metal surface to render it suitable or more suitable for contact with hot glassware comprises raising the temperature of the said surface to an extent sufficient to clean it, applying to the cleaned surface a liquid composition comprising a thermosetting polyimide resin and graphite, removing the solvent and curing the polyimide resin.
The method of the invention thus comprises four steps. In the first of these the surface to be prepared is heated to an extent sufficient to clean it. By this we mean that it should be freed of any grease that may have adhered to it. Any suitable heating means may be used for this, but we prefer a gas flame, which will rapidly raise the temperature of the surface to be prepared (e.g. the surface of a conveyor belt or a "dead plate" between communicating belts) to the temperature necessary to burn off any adhering grease or dirt. Heating the surface to temperatures of about 250or for up to 10 minutes will normally be sufficient for this purpose.
In the second step of the process a coating composition of thermosetting polyimide resin and graphite is applied to the surface. It is applied in the form of a solution or suspension in an inert solvent, and suitably by spraying. A typical solvent is N-methyl pyrrolidone; an alternative is a mixture of N.methyl pyrrolidone and xylene. The most useful solvents are those having the lowest viscosity consistent with the ability to dissolve or suspend the resin.
Suitable resins are those sold by the Monsanto Company under the trade names "Skybond 700" and "Skvbond 703". and that sold bv Du Pont & Co. under the trade name "Pyralin
PZ-4701". These are condensation-type resins. A suitable solution or suspension comprises a solids content of 45-75% e.g. 60-70%. The ratio of polyimide: graphite in the coating material may vary within quite wide limits, ratios of 0.5 to 4:1, e.g. 1 to 4:1, being preferred. As an example, the mixture may contain 36 parts by weight N-methyl pyrrolidone, and 64 parts solids (of which 66aye by weight is resin and 34% by weight is graphite). The graphite preferably has a particle size in the range 15-20Rm (Hegman). The resin-graphite mixture may also contain additives such as dispersing agents and spray lubricants.An example of the former is "Nuosperse 657", sold by the Durham Chemical
Group; a suitable spray lubricant is "Rhodorsil Oil 640 V100", sold by Rhone-Poulenc.
(Skvbond", "Nuosperse", "Rhodorsil" and "Pyralin" are trade marks).
Mixtures of resins may be used if desired, and whereas an exclusively thermosetting material will give a hard final surface coating, it is possible to achieve a more flexible final coating, such as would be suitable for a conveyor belt. by incorporating in the resin mixture a minor amount of a thermoplastic polyimide resin, Thus, for example, up to 20%, suitably 10-20%, by weight of the thermosetting resin may be replaced with thermoplastic resin to give a surface coating which has a desirable degree of flexibility but nevertheless the ability to withstand contact with the hot glass. The surface coating desirably has a thickness of 10-20ym.
It is preferred that the cleaned surface should be allowed to cool after heat treatment and before application of the resin-graphite mixture, preferably of the solvent will determine the precise temperature of application thereof and thus the temperature to which the surface should be cooled. The optimum conditions for application of the coating medium are those which will give an even layer of coating material on the surface, and if the temperature is too high the solvent will evaporate off too rapidly for this, whereas too low a temperature may result in an insufficient rate of evaporation. When using a liquid mixture in N-methyl pyrrolidone, we have found that a surface temperature of the order of 90"C to 1200C gives very satisfactory results. The resin-graphite mixture is preferably applied using a hot spray technique so as to reduce the viscosity of the resin.
After application of the solvent-based resin mixture the solvent is allowed to evaporate before proceeding to the fourth and final step, the curing of the coating.
The solvent removal step must be carried out with care. Too rapid a rate of drying will result in premature curing and blistering of the resin, while too slow a rate of drying will reduce the overall efficiency of the coating since it may not then be possible to treat the metal surface to the required extent during the changeover from one job to another. We have found that the solvent removal step is suitably carried out by heating the surface at a temperature of 1200C to 1500C while at the same time blowing air across the surface. In the case of open-mesh metal conveyors in infra-red heating element may be placed beneath the conveyor and air is blown through the conveyor from below. The inflammable solvent vapours are thus blown away from the heating element.Under these conditions it will normally be possible to evaporate substantially all the solvent within about 20 minutes.
The final stage of the process may be achieved by mounting a suitable infra-red heating element close to the conveyor belt or other metal surface being treated, such that as the surface passes adjacent to the element the surface temperatre of the polyimide in the coating is raised to at least 2500C and preferably to about 350"C. It has been found that repeated passage of coated parts past such an element for a period of, say, up to one hour at the minimum temperature will effect a satisfactory cure of the resin. At 350"C cure may be complete within S to 10 minutes. Other available techniques for effecting cure of surface coating are, of course, also applicable in the method of the invention.The cured coating on the belt or other metal part thus obtained is reasonably resistant to heat and damage, resistant to the action of oil and grease, minimises damage to the hot glass through thermal shock cracking, provides lubricity to the bottles and other glassware when they slide on an off the parts as required, and does not require any maintenance by the way of doping etc., during a period of at least several days.
Although the description herein of the method of coating metal parts relates primarily to a period when the parts are not in actual use, we have found that in certain circumstances it is possible to apply and cure the coating while the part is in use. In the case of a conveyor belt, for example, all the steps described above can be carried out while the belt is simultaneously used for the transport of hot bottles. The resultant coating on the belt, however, may not have as long a life as the coating on a belt provided during an idle period of production.
The following Example is given for the purpose of illustrating the invention.
Example
A conveyor belt which carries glass bottles from the forming machine to the annealing lehr was first cleaned by passing it through a gas flame so that the surface of the metal reached a temperature of 250"C, and this treatment was maintained for ten minutes. The belt was then allowed to cool for fifteen minutes, by which time the temperature had fallen to under 100"C, and it was then sprayed with a resin mix formulated as follows::
Pyraline PZ-4701 (44% resin solids) 585.00 parts by weight
Graphite powder Rocol X7119 257.30 " ,, Nuosperse 657 (dispersing agent) 1.2 1 rr Rhodorsil Oil 640 V100 (spraying lubricant) 0.3
Diluent MPX 156.2 (The Diluent MPX consisted of 6 parts by weight of N-methyl pyrrolidone and 4 parts by weight of xylene).
The solid content in the final formulation was 51.5% and the resin/graphite ratio was 1. The mix was produced in a ball mill to a Hegman gauge 6.5.
The mix was sprayed onto the conveyor belt at a rate of 50 gms/m2. The belt was then passed over a 6 Kw infra-red heater, and air blown from underneath so as to remove the solvent and ensure that the belt temperature was somwhere in the range of 120-150 C.
About 200 cubic feet of air per minute was required for this purpose. After fifteen minutes the air blower was turned off and the temperature of the belt allowed to increase to 300"C; this was maintained for thirty minutes after which the heater was switched off and the belt allowed to cool. The coating thickness was separately determined to be about 15 micrometers. A bottle placed upon the coated belt was found to have a static coefficient of friction of approximately 0.15, whereas a similar bottle placed upon an uncoated belt had coefficients of friction ranging from 0.25 to 0.7, depending upon the degree of oil contamination of the uncoated belt.
WHAT WE CLAIM IS:
1. A method of preparing a metal surface comprising raising the temperature of the surface to an extent sufficient to clean it, applying to the cleaned surface a liquid composition comprising a thermosetting polyimide resin and graphite, removing the solvent and curing the polyimide resin.
2. A method as claimed in claim 1 wherein the metal surface is cleaned by heating it to a temperature of about 250"C for up to 10 minutes.
3. A method as claimed in claim 1 or 2 wherein the solvent is N-methyl pyrrolidone.
4. A method as claimed in claim 1 or 2 wherein the solvent is a mixture of N-methyl pyrrolidone and xylene.
5. A method as claimed in any of claims 1 to 4 wherein the liquid composition has a solids content of 45-75%.
6. A method as claimed in claim 5 wherein the solids content of the composition is 60-70%.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (18)
1. A method of preparing a metal surface comprising raising the temperature of the surface to an extent sufficient to clean it, applying to the cleaned surface a liquid composition comprising a thermosetting polyimide resin and graphite, removing the solvent and curing the polyimide resin.
2. A method as claimed in claim 1 wherein the metal surface is cleaned by heating it to a temperature of about 250"C for up to 10 minutes.
3. A method as claimed in claim 1 or 2 wherein the solvent is N-methyl pyrrolidone.
4. A method as claimed in claim 1 or 2 wherein the solvent is a mixture of N-methyl pyrrolidone and xylene.
5. A method as claimed in any of claims 1 to 4 wherein the liquid composition has a solids content of 45-75%.
6. A method as claimed in claim 5 wherein the solids content of the composition is 60-70%.
7. A method as claimed in any of claims 1 to 6 wherein the ratio of polyimide to
graphite in the composition is 0.5 to 4:1.
8. A method as claimed in claim 7 wherein the said ratio is 1 to 4:1.
9. A method as claimed in any of claims 5 to 8 wherein the composition comprises, by weight, 36 parts N-methyl pyrrolidone and 64 parts solids of which 66% is polyimide resin and 34% is graphite.
10. A method as claimed in any of claims 1 to 9 wherein the graphite has a particle size of I 5-20,um (Hegman).
l l. A method as claimed in any of claims 1 to 10 wherein the thermosetting polyimide resin is replaced with up to 20% by weight of a thermoplastic polyimide resin.
12. A method as claimed in any of claims 1 to 11 wherein the liquid composition is applied to the metal surface when the latter is at a temperature of 90 to 12()0C.
13. A method as claimed in any of claims 1 to 12 wherein the solvent is removed by heating the metal surface to a temperature between 120 and 1500C whilst blowing air across it.
14. A method as claimed in any of claims 1 to 13 wherein the polyimide resin is cured by heating it to a temperature of at least 250"C.
15. A method as claimed in claim 14 wherein the resin is cured by heating it to a temperature of about 350"C.
16. A method as claimed in claim 1, substantially as described in the Example.
17. A metal surface whenever prepared by a method as claimed in any of claims 1 to 16.
18. A conveyor belt the metal surface of which has been prepared by a method as claimed in any of claims 1 to 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4331276A GB1564128A (en) | 1977-11-15 | 1977-11-15 | Method of preparing metal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4331276A GB1564128A (en) | 1977-11-15 | 1977-11-15 | Method of preparing metal surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1564128A true GB1564128A (en) | 1980-04-02 |
Family
ID=10428219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4331276A Expired GB1564128A (en) | 1977-11-15 | 1977-11-15 | Method of preparing metal surface |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1564128A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981001375A1 (en) * | 1979-11-22 | 1981-05-28 | Glyco Metall Werke | Composite material with two or a plurality of layers |
| US6207622B1 (en) | 2000-06-16 | 2001-03-27 | Ecolab | Water-resistant conveyor lubricant and method for transporting articles on a conveyor system |
| US6288012B1 (en) | 1999-11-17 | 2001-09-11 | Ecolab, Inc. | Container, such as a beverage container, lubricated with a substantially non-aqueous lubricant |
| US6485794B1 (en) | 1999-07-09 | 2002-11-26 | Ecolab Inc. | Beverage container and beverage conveyor lubricated with a coating that is thermally or radiation cured |
| US6495494B1 (en) | 2000-06-16 | 2002-12-17 | Ecolab Inc. | Conveyor lubricant and method for transporting articles on a conveyor system |
| US6591970B2 (en) | 2000-12-13 | 2003-07-15 | Ecolab Inc. | Water-activatable conveyor lubricant and method for transporting articles on a conveyor system |
| US6653263B1 (en) | 1999-09-07 | 2003-11-25 | Ecolab Inc. | Fluorine-containing lubricants |
| US6809068B1 (en) | 1999-09-07 | 2004-10-26 | Ecolab Inc. | Use of lubricants based on polysiloxanes |
| US7091162B2 (en) | 2003-07-03 | 2006-08-15 | Johnsondiversey, Inc. | Cured lubricant for container coveyors |
| US7109152B1 (en) | 1999-07-22 | 2006-09-19 | Johnsondiversey, Inc. | Lubricant composition |
| US7384895B2 (en) | 1999-08-16 | 2008-06-10 | Ecolab Inc. | Conveyor lubricant, passivation of a thermoplastic container to stress cracking and thermoplastic stress crack inhibitor |
| US7727941B2 (en) | 2005-09-22 | 2010-06-01 | Ecolab Inc. | Silicone conveyor lubricant with stoichiometric amount of an acid |
| US7741257B2 (en) | 2005-03-15 | 2010-06-22 | Ecolab Inc. | Dry lubricant for conveying containers |
| US7741255B2 (en) | 2006-06-23 | 2010-06-22 | Ecolab Inc. | Aqueous compositions useful in filling and conveying of beverage bottles wherein the compositions comprise hardness ions and have improved compatibility with pet |
| US7745381B2 (en) | 2005-03-15 | 2010-06-29 | Ecolab Inc. | Lubricant for conveying containers |
| US7915206B2 (en) | 2005-09-22 | 2011-03-29 | Ecolab | Silicone lubricant with good wetting on PET surfaces |
| US9359579B2 (en) | 2010-09-24 | 2016-06-07 | Ecolab Usa Inc. | Conveyor lubricants including emulsions and methods employing them |
| US9873853B2 (en) | 2013-03-11 | 2018-01-23 | Ecolab Usa Inc. | Lubrication of transfer plates using an oil or oil in water emulsions |
-
1977
- 1977-11-15 GB GB4331276A patent/GB1564128A/en not_active Expired
Cited By (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1981001375A1 (en) * | 1979-11-22 | 1981-05-28 | Glyco Metall Werke | Composite material with two or a plurality of layers |
| US6485794B1 (en) | 1999-07-09 | 2002-11-26 | Ecolab Inc. | Beverage container and beverage conveyor lubricated with a coating that is thermally or radiation cured |
| US7067182B2 (en) | 1999-07-09 | 2006-06-27 | Ecolab Inc. | Lubricant coated beverage container or conveyor therefor |
| US7109152B1 (en) | 1999-07-22 | 2006-09-19 | Johnsondiversey, Inc. | Lubricant composition |
| US7384895B2 (en) | 1999-08-16 | 2008-06-10 | Ecolab Inc. | Conveyor lubricant, passivation of a thermoplastic container to stress cracking and thermoplastic stress crack inhibitor |
| US6809068B1 (en) | 1999-09-07 | 2004-10-26 | Ecolab Inc. | Use of lubricants based on polysiloxanes |
| US6653263B1 (en) | 1999-09-07 | 2003-11-25 | Ecolab Inc. | Fluorine-containing lubricants |
| US6962897B2 (en) | 1999-09-07 | 2005-11-08 | Ecolab Inc. | Fluorine-containing lubricants |
| US6288012B1 (en) | 1999-11-17 | 2001-09-11 | Ecolab, Inc. | Container, such as a beverage container, lubricated with a substantially non-aqueous lubricant |
| US6743758B2 (en) | 2000-06-16 | 2004-06-01 | Ecolab Inc. | Lubricant for transporting containers on a conveyor system |
| US6495494B1 (en) | 2000-06-16 | 2002-12-17 | Ecolab Inc. | Conveyor lubricant and method for transporting articles on a conveyor system |
| US7371711B2 (en) | 2000-06-16 | 2008-05-13 | Ecolab Inc. | Conveyor lubricant and method for transporting articles on a conveyor system |
| US7371712B2 (en) | 2000-06-16 | 2008-05-13 | Ecolab Inc. | Conveyor lubricant and method for transporting articles on a conveyor system |
| US6207622B1 (en) | 2000-06-16 | 2001-03-27 | Ecolab | Water-resistant conveyor lubricant and method for transporting articles on a conveyor system |
| US6591970B2 (en) | 2000-12-13 | 2003-07-15 | Ecolab Inc. | Water-activatable conveyor lubricant and method for transporting articles on a conveyor system |
| US7091162B2 (en) | 2003-07-03 | 2006-08-15 | Johnsondiversey, Inc. | Cured lubricant for container coveyors |
| US9365798B2 (en) | 2005-03-15 | 2016-06-14 | Ecolab Usa Inc. | Lubricant for conveying containers |
| US8455409B2 (en) | 2005-03-15 | 2013-06-04 | Ecolab Usa Inc. | Dry lubricant for conveying containers |
| US9926511B2 (en) | 2005-03-15 | 2018-03-27 | Ecolab Usa Inc. | Lubricant for conveying containers |
| US7745381B2 (en) | 2005-03-15 | 2010-06-29 | Ecolab Inc. | Lubricant for conveying containers |
| US10851325B2 (en) | 2005-03-15 | 2020-12-01 | Ecolab Usa Inc. | Dry lubricant for conveying containers |
| US8058215B2 (en) | 2005-03-15 | 2011-11-15 | Ecolab Usa Inc. | Dry lubricant for conveying containers |
| US9562209B2 (en) | 2005-03-15 | 2017-02-07 | Ecolab Usa Inc. | Dry lubricant for conveying containers |
| US8211838B2 (en) | 2005-03-15 | 2012-07-03 | Ecolab Usa Inc. | Lubricant for conveying containers |
| US8216984B2 (en) | 2005-03-15 | 2012-07-10 | Ecolab Usa Inc. | Dry lubricant for conveying containers |
| US10815448B2 (en) | 2005-03-15 | 2020-10-27 | Ecolab Usa Inc. | Lubricant for conveying containers |
| US7741257B2 (en) | 2005-03-15 | 2010-06-22 | Ecolab Inc. | Dry lubricant for conveying containers |
| US8765648B2 (en) | 2005-03-15 | 2014-07-01 | Ecolab Usa Inc. | Dry lubricant for conveying containers |
| US8486872B2 (en) | 2005-09-22 | 2013-07-16 | Ecolab Usa Inc. | Silicone lubricant with good wetting on PET surfaces |
| US7727941B2 (en) | 2005-09-22 | 2010-06-01 | Ecolab Inc. | Silicone conveyor lubricant with stoichiometric amount of an acid |
| US7915206B2 (en) | 2005-09-22 | 2011-03-29 | Ecolab | Silicone lubricant with good wetting on PET surfaces |
| US8703667B2 (en) | 2006-06-23 | 2014-04-22 | Ecolab Usa Inc. | Aqueous compositions useful in filling and conveying of beverage bottles wherein the compositions comprise hardness ions and have improved compatibility with PET |
| US8097568B2 (en) | 2006-06-23 | 2012-01-17 | Ecolab Usa Inc. | Aqueous compositions useful in filling and conveying of beverage bottles wherein the compositions comprise hardness ions and have improved compatibility with PET |
| US7741255B2 (en) | 2006-06-23 | 2010-06-22 | Ecolab Inc. | Aqueous compositions useful in filling and conveying of beverage bottles wherein the compositions comprise hardness ions and have improved compatibility with pet |
| US9359579B2 (en) | 2010-09-24 | 2016-06-07 | Ecolab Usa Inc. | Conveyor lubricants including emulsions and methods employing them |
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