GB2117270A - Treatment of plastics material - Google Patents

Treatment of plastics material Download PDF

Info

Publication number
GB2117270A
GB2117270A GB08207346A GB8207346A GB2117270A GB 2117270 A GB2117270 A GB 2117270A GB 08207346 A GB08207346 A GB 08207346A GB 8207346 A GB8207346 A GB 8207346A GB 2117270 A GB2117270 A GB 2117270A
Authority
GB
United Kingdom
Prior art keywords
adhesive
filler
plastics
plastics material
treatment
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.)
Withdrawn
Application number
GB08207346A
Inventor
Alan John Collins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bowthorpe Hellerman Ltd
Original Assignee
Bowthorpe Hellerman Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bowthorpe Hellerman Ltd filed Critical Bowthorpe Hellerman Ltd
Priority to GB08207346A priority Critical patent/GB2117270A/en
Publication of GB2117270A publication Critical patent/GB2117270A/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • B05D7/02—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 macromolecular substances, e.g. rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials

Abstract

Plastics material, for example heat shrink tubing (10), is treated by application of a surface coating containing an absorbent filler. Such treatment enhances the permanence and adhesion of markings applied subsequently, for example using a typewriter. The invention finds particular application in the marking of heat shrink tubing for use in identifying cables.

Description

SPECIFICATION Treatment of plastics materials Field of Invention This invention relates to the treatment of plastics materials.
Background to the Invention It is sometimes necessary or desirable to provide markings, e.g. in the form of alphanumeric data, on plastics materials. For instance, identifying data is often required for electric cables, particularly to cable bundles, and such data markings are generally applied to plastics cable coatings or plastics marker sleeves. Such marking is generally effected using ink, e.g. oilbased ink, and in some applications it may be convenient to carry out the marking using a conventional typewriter.
The adhesion and permanence of markings applied directly on to a smooth plastics surface are generally poor. It is known that heat treatment of plastics materials may improve the permanence of such marks. However, in cases where the plastics material is a heat shrink material, e.g. heat shrink tubing for marking cables, the application of heat is unsuitable.
It is accordingly an object of the present invention to provide a method of treating plastics materials in order to improve the permanence of markings applied thereto.
The Invention According to the present invention there is provided a method of treating plastics materials, comprising applying thereto a surface coating containing an absorbent filler.
It is found that by treating plastics materials in this way, the permanence and adhesion of subsequently applied markings may be enhanced.
One preferred filler material is a flatting agent Celite (Celite is a Registered Trade Mark of Johns Manville).
The absorbent filler may be applied by any convenient technique, e.g. by passage of the plastics material through a fluidised bed of the filler or by powder spraying of the filler.
Preferably, an adhesive layer is initially applied to the plastics material, and the absorbent filler is then applied to the adhesive layer. Treatment in this way is found to give a surface having particularly good marking properties.
The adhesive may be applied by any convenient technique, including spray application.
The adhesive conveniently comprises a two part polyether or polyester urethane adhesive to which the absorbent filler is applied while the adhesive is in an uncured state. It is found that urethane provides a particularly flexible and solvent resistant adhesive system.
The invention finds particular application to heat shrink thermoplastic materials, e.g. heat shrink sleeve tube for use in marking cables.
Treatment by the method of the invention results in tubing surfaces having good marking properties, capable of being marked in a permanent manner by, for example, use of a conventional typewriter.
The resulting coating may be cured by heat treatment, e.g. in an oven. In the case of treatment of heat shrink materials, the curing should be carried out at a temperature below that at which heat shrinking takes place.
The method of the invention is conveniently carried out as a continuous process, with a length of, say, heat shrink sleeve tube being passed over rollers through appropriate treatment zones.
In one particular embodiment, a length of crosslinked polyolefin shrink sleeving is treated by initial application of a two part polyether or polyester urethane adhesive. While the adhesive is in an uncured state an absorbent filler is affixed to its surface by, for example, passing through a fluidised bed of filler or by powdered spraying. The resulting coating may be subsequently cured. The urethane is found to provide a particularly flexible and solvent resistant adhesive system.
The invention also includes within its scope plastics material treated by the method of the invention.
The invention will be further described, by way of example, with reference to the accompanying drawing.
In the Drawing Figure 1 is a schematic illustration of one embodiment of apparatus for carrying out the method of the invention.
Detailed Description of the Drawing Figure 1 illustrates a continuous method for treatment of a length of heat shrink tubing 10. The tubing is passed from unwind over a roller 12, past a nozzle 14 for spraying onto one surface of the tube an adhesive, e.g. a two part polyether or polyester urethane adhesive.
The tubing 10 is then passed through a fluidised bed 1 6 of absorbent filler, e.g. Celite, in a container 18, the tubing being passed around a further roller 20 located above container 1 8. The absorbent filler is affixed to the surface of the adhesive which is in an uncured state.
The tubing 10 exiting the container 1 8 passes over a further roller 22 and is then passed through an oven 24 where the coating is cured to provide an absorbent markable surface. The temperature at which the coating is cured should, of course, be below the temperature at which heat shrinking will occur.
1. A method of treating plastics material, comprising applying thereto a surface coating containing an absorbent filler.
2. A method according to claim 1, wherein the absorbent filler is applied by passage of the plastics material through a fluidised bed of the filler.
3. A method according to claim 1, wherein the absorbent filler is applied by powder spraying of the filler.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (14)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Treatment of plastics materials Field of Invention This invention relates to the treatment of plastics materials. Background to the Invention It is sometimes necessary or desirable to provide markings, e.g. in the form of alphanumeric data, on plastics materials. For instance, identifying data is often required for electric cables, particularly to cable bundles, and such data markings are generally applied to plastics cable coatings or plastics marker sleeves. Such marking is generally effected using ink, e.g. oilbased ink, and in some applications it may be convenient to carry out the marking using a conventional typewriter. The adhesion and permanence of markings applied directly on to a smooth plastics surface are generally poor. It is known that heat treatment of plastics materials may improve the permanence of such marks. However, in cases where the plastics material is a heat shrink material, e.g. heat shrink tubing for marking cables, the application of heat is unsuitable. It is accordingly an object of the present invention to provide a method of treating plastics materials in order to improve the permanence of markings applied thereto. The Invention According to the present invention there is provided a method of treating plastics materials, comprising applying thereto a surface coating containing an absorbent filler. It is found that by treating plastics materials in this way, the permanence and adhesion of subsequently applied markings may be enhanced. One preferred filler material is a flatting agent Celite (Celite is a Registered Trade Mark of Johns Manville). The absorbent filler may be applied by any convenient technique, e.g. by passage of the plastics material through a fluidised bed of the filler or by powder spraying of the filler. Preferably, an adhesive layer is initially applied to the plastics material, and the absorbent filler is then applied to the adhesive layer. Treatment in this way is found to give a surface having particularly good marking properties. The adhesive may be applied by any convenient technique, including spray application. The adhesive conveniently comprises a two part polyether or polyester urethane adhesive to which the absorbent filler is applied while the adhesive is in an uncured state. It is found that urethane provides a particularly flexible and solvent resistant adhesive system. The invention finds particular application to heat shrink thermoplastic materials, e.g. heat shrink sleeve tube for use in marking cables. Treatment by the method of the invention results in tubing surfaces having good marking properties, capable of being marked in a permanent manner by, for example, use of a conventional typewriter. The resulting coating may be cured by heat treatment, e.g. in an oven. In the case of treatment of heat shrink materials, the curing should be carried out at a temperature below that at which heat shrinking takes place. The method of the invention is conveniently carried out as a continuous process, with a length of, say, heat shrink sleeve tube being passed over rollers through appropriate treatment zones. In one particular embodiment, a length of crosslinked polyolefin shrink sleeving is treated by initial application of a two part polyether or polyester urethane adhesive. While the adhesive is in an uncured state an absorbent filler is affixed to its surface by, for example, passing through a fluidised bed of filler or by powdered spraying. The resulting coating may be subsequently cured. The urethane is found to provide a particularly flexible and solvent resistant adhesive system. The invention also includes within its scope plastics material treated by the method of the invention. The invention will be further described, by way of example, with reference to the accompanying drawing. In the Drawing Figure 1 is a schematic illustration of one embodiment of apparatus for carrying out the method of the invention. Detailed Description of the Drawing Figure 1 illustrates a continuous method for treatment of a length of heat shrink tubing 10. The tubing is passed from unwind over a roller 12, past a nozzle 14 for spraying onto one surface of the tube an adhesive, e.g. a two part polyether or polyester urethane adhesive. The tubing 10 is then passed through a fluidised bed 1 6 of absorbent filler, e.g. Celite, in a container 18, the tubing being passed around a further roller 20 located above container 1 8. The absorbent filler is affixed to the surface of the adhesive which is in an uncured state. The tubing 10 exiting the container 1 8 passes over a further roller 22 and is then passed through an oven 24 where the coating is cured to provide an absorbent markable surface. The temperature at which the coating is cured should, of course, be below the temperature at which heat shrinking will occur. CLAIMS
1. A method of treating plastics material, comprising applying thereto a surface coating containing an absorbent filler.
2. A method according to claim 1, wherein the absorbent filler is applied by passage of the plastics material through a fluidised bed of the filler.
3. A method according to claim 1, wherein the absorbent filler is applied by powder spraying of the filler.
4. A method according to claim 1, 2 or 3 wherein an adhesive layer is initially applied to the plastics material, and the absorbent filler is then applied to the adhesive layer.
5. A method according to claim 4, wherein the adhesive is applied by spraying.
6. A method according to claim 4 or 5, wherein the adhesive comprises a two part polyether or polyester urethane adhesive to which the absorbent filler is applied while the adhesive is in an uncured state.
7. A method according to any one of the preceding claims, further comprising curing the coating by heat treatment.
8. A method according to any one of the preceding claims, wherein the method is carried out as a continuous process, with a length of plastics material being passed over rollers through appropriate treatment zones.
9. A method according to any one of the preceding claims, wherein the plastics material comprises heat shrink thermoplastics material.
10. A method according to claim 9, wherein the plastics material comprises heat shrink sleeve tube.
11. A method according to any one of the preceding claims, further comprising marking the treated plastics material.
12. A method according to claim 11 , wherein marking is effected using ink.
1 3. A method according to claim 11 or 12, wherein marking is effected using a typewriter.
14. A method of treating plastics materials, substantially as herein described with reference to the accompanying drawing.
1 5. Plastics material treated by the method of the invention.
GB08207346A 1982-03-12 1982-03-12 Treatment of plastics material Withdrawn GB2117270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08207346A GB2117270A (en) 1982-03-12 1982-03-12 Treatment of plastics material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08207346A GB2117270A (en) 1982-03-12 1982-03-12 Treatment of plastics material

Publications (1)

Publication Number Publication Date
GB2117270A true GB2117270A (en) 1983-10-12

Family

ID=10528982

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08207346A Withdrawn GB2117270A (en) 1982-03-12 1982-03-12 Treatment of plastics material

Country Status (1)

Country Link
GB (1) GB2117270A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0142331A2 (en) * 1983-11-10 1985-05-22 Dai Nippon Insatsu Kabushiki Kaisha Method of offset printing on polypropylene resin cases for video tape cassettes
EP0158925A2 (en) * 1984-04-09 1985-10-23 Esselte Meto International Produktions Gmbh Printable film, process for preparing it and use
EP0237258A2 (en) * 1986-03-04 1987-09-16 Raychem Limited Marker assembly
US4879148A (en) * 1987-03-02 1989-11-07 Raychem Limited Marker assembly
EP0406321A1 (en) * 1988-03-22 1991-01-09 Raychem Corp Articles having permanent indicia thereon.
US5110638A (en) * 1990-03-20 1992-05-05 Raychem Corporation Marker device with permanent indicia
AT409246B (en) * 1994-10-25 2002-06-25 Siemens Ag METHOD AND DEVICE FOR APPLYING COLOR LABELS TO A CORE

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1220226A (en) * 1967-01-16 1971-01-20 Dick Co Ab Improvements in or relating to spirit duplication
GB1240586A (en) * 1968-07-06 1971-07-28 Seikisui Chemical Co Ltd Method of producing multicellular multilayer thermoplastic synthetic resin films
GB1491699A (en) * 1973-12-19 1977-11-09 Wachendorff W Base sheets for printing with reactive dyes
GB2028681A (en) * 1978-06-28 1980-03-12 Fuji Photo Film Co Ltd Recording sheets for ink jet recording
GB2061764A (en) * 1979-10-12 1981-05-20 Hercules Inc Process for double coating paper and product thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1220226A (en) * 1967-01-16 1971-01-20 Dick Co Ab Improvements in or relating to spirit duplication
GB1240586A (en) * 1968-07-06 1971-07-28 Seikisui Chemical Co Ltd Method of producing multicellular multilayer thermoplastic synthetic resin films
GB1491699A (en) * 1973-12-19 1977-11-09 Wachendorff W Base sheets for printing with reactive dyes
GB2028681A (en) * 1978-06-28 1980-03-12 Fuji Photo Film Co Ltd Recording sheets for ink jet recording
GB2061764A (en) * 1979-10-12 1981-05-20 Hercules Inc Process for double coating paper and product thereof

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0142331A2 (en) * 1983-11-10 1985-05-22 Dai Nippon Insatsu Kabushiki Kaisha Method of offset printing on polypropylene resin cases for video tape cassettes
EP0142331A3 (en) * 1983-11-10 1987-09-02 Dai Nippon Insatsu Kabushiki Kaisha Method of offset printing on polypropylene resin cases for video tape cassettes
EP0158925A2 (en) * 1984-04-09 1985-10-23 Esselte Meto International Produktions Gmbh Printable film, process for preparing it and use
EP0158925A3 (en) * 1984-04-09 1987-04-22 Esselte Meto International Gmbh Printable film, process for preparing it and use
EP0237258A2 (en) * 1986-03-04 1987-09-16 Raychem Limited Marker assembly
EP0237258A3 (en) * 1986-03-04 1990-01-17 Raychem Limited Marker assembly
US4879148A (en) * 1987-03-02 1989-11-07 Raychem Limited Marker assembly
EP0406321A1 (en) * 1988-03-22 1991-01-09 Raychem Corp Articles having permanent indicia thereon.
EP0406321A4 (en) * 1988-03-22 1992-04-01 Raychem Corporation Articles having permanent indicia thereon
US5110638A (en) * 1990-03-20 1992-05-05 Raychem Corporation Marker device with permanent indicia
AT409246B (en) * 1994-10-25 2002-06-25 Siemens Ag METHOD AND DEVICE FOR APPLYING COLOR LABELS TO A CORE

Similar Documents

Publication Publication Date Title
US5520958A (en) System and method for applying a desired, protective finish to printed label stock
US4497851A (en) Method for the fabrication of transferable enamel sheet
US5476627A (en) Composite molding process utilizing tackified fabric material
US5527840B1 (en) Aqueous coating composition
GB2117270A (en) Treatment of plastics material
EP0562259A1 (en) Optical fibre with supplementary colour code
CA2362749A1 (en) Printed thermoplastic materials and process for providing same
CA2163775A1 (en) Marking an object
MX9604396A (en) Curable silicon-containing polyether adhesive composition.
DE59712381D1 (en) MULTILAYER PAINTING, METHOD FOR THE PRODUCTION THEREOF AND NON-AQUEOUS GLUE THEREFORE SUITABLE
FI97817B (en) Method and arrangement for coating a moving track
EP1053793B1 (en) Process for applying a lacquer and a decoration onto an object and process and apparatus for laminating lacquer, decorations and adhesive onto a film
NO880433D0 (en) COAT - OR COATED COATING APPLICATION FOR A VEHICLE OR PART THEREOF IN PAINTING WORK.
DE102011052520A1 (en) Device for coating electrically conductive wires
PL186137B1 (en) Method of making friction-reducing lacquer coated formpieces for building industry and friction-reducing lacquer coated formpiece as such
DE3230955C2 (en) Process for sheathing a steel pipe with a sheathing layer made of polyethylene
DE2257135C3 (en) Method for producing a composite pipe consisting of a metallic core tube and a thermoplastic plastic jacket
ATE217547T1 (en) METHOD AND DEVICE FOR APPLYING A TWO-COMPONENT IMPREGNATION OR COATING AGENT TO A SUPPORT
CA2107178A1 (en) Process for Protecting and Repairing Plastic and Plastic Composite Materials
US6165565A (en) Method for corona treating thermosets
JP7353855B2 (en) Roller and its manufacturing method
KR910003211B1 (en) Method of forming a colored coating film on a cross-linked polyethylene sheet or electric wire
JP2566373B2 (en) Coating device
JPS55111232A (en) Anticorrosive coating for frequently seawater splashed area of marine steel structure
JPS60251954A (en) Masking jig used in painting

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)