GB2215426A - Masking tubular components - Google Patents

Masking tubular components Download PDF

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Publication number
GB2215426A
GB2215426A GB8805053A GB8805053A GB2215426A GB 2215426 A GB2215426 A GB 2215426A GB 8805053 A GB8805053 A GB 8805053A GB 8805053 A GB8805053 A GB 8805053A GB 2215426 A GB2215426 A GB 2215426A
Authority
GB
United Kingdom
Prior art keywords
tubular component
tubular
masking
component
areas
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Withdrawn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
GB8805053A
Other versions
GB8805053D0 (en
Inventor
M J Stevens
Paul William Fitzsimmons
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 GB8805053A priority Critical patent/GB2215426A/en
Publication of GB8805053D0 publication Critical patent/GB8805053D0/en
Priority to EP19890302022 priority patent/EP0331455A3/en
Publication of GB2215426A publication Critical patent/GB2215426A/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Withdrawn legal-status Critical Current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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/20—Masking elements, i.e. elements defining uncoated areas on an object to be coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/20—Masking elements, i.e. elements defining uncoated areas on an object to be coated
    • B05B12/26—Masking elements, i.e. elements defining uncoated areas on an object to be coated for masking cavities

Description

2215426 MASK AND MASKING METHOD This invention relates to a method of
masking a selected area or selected areas of tubular components prior to treating unmasked surface areas. The invention also relates to a mask for use in the masking method.
Hitherto in masking tubular components, masking tape has been applied over the selected areas of the component surface, whether this is the outer surface or the inner surface of the component even though applying masking tape to the inner surface of a tubular component is particularly difficult. Once masked in this manner, the relevant surface or surfaces of the tubular component are treated in the manner required. For example, in the case uf heat-shrinkable tubular components of plastics material, the surface treatment may comprise spraying or otherwise depositing a layer of metal or alloy, adhesive coating, paint spraying, sand-or aqua-blasting or surface etching for example.
In accordance with this invention, there is provided a method of masking a selected area or selected areas of a tubular component prior to treating unmasked surface areas, comprising fitting a re-usable masking element to the tubular component, the tubular component and/or the masking element resiliently deforming so as t o be urged together over the selected area or selected areas of the tubular component.
J In this manner the selected area or areas of the tubular component are effectively and securely masked so that the required surface treatment of the component canthen be restricted to the unmasked area(s).
The re-usable masking element may comprise a tubular member for fitting within one end of the tubular component to mask an area of the inside surface adjacent that end. Preferably the inner end of the tubular mask element is chamfered around its inner edge: if a layer of e.g. metal is then applied to the unmasked inside area of the-tubular component, when the mask element is removed it leaves a clean edge to the applied metal layer.
The re-usable masking element may comprise a tubular member for fitting around the outside of the tubular component to mask an area of its outer surface.
The masking element may comprise a cap member for fitting to the end of the tubular component, and having inner and outer circumferential skirts for fitting against the inner and outer surfaces of the tubular component.
Another form of re-usable mask may comprise a flexible or semi-flexible tubular member of resilient material and of outer diameter greater than the inner diameter of the tubular component which is to be masked over a selected area of its inner surface. This tubular mask member can then be folded or kinked along its length, inserted into the tubular component and then allowed to expand under its own resilience so far as the inner diameter of the tubular component will permit, thus pressing firmly against the inner surface of the tubular component over a portion of its circumference.
Embodiments of this invention will now be described by way of example only and with reference to the accompanying drawings, in which:
3 FIGURE 1 is a longitudinal section through an end portion of a heatshrinkable tubular component shown with a re-usable masking element inserted into one end; FIGURE 2 is a similar section through the same tubular component shown with a re-usable mask in the form of a cap member fitted to the end of the component; and FIGURE 3 is an end view of the tubular component shown with a re-usable, tubular mask member which has been kinked along its length and inserted into the end of the component.
Referring to Figure 1, there is shown a heatshrinkable tubular component 10 of plastics material. A re-usable masking element 12 has been inserted into one end of the component 10 to mask a selected area of the inner surface of the component adjacent that end. The masking element 12 com.prises a precision-made tubular member, which may be machined or moulded, and is provided with a chamfered edge 14 to its inner end. If the surface treatment which the unmasked area of the tubular component 10 is to receive involves high temperatures, the element 12 is formed of temperature resisting material e.g. PTFE.
In use, the tubular masking element 12 is pushed into the end of the component 10 to the position shown. The element 12 has a slightly greater outer diameter than the inner diameter of the component 10, but forces the component 10 radially outwards against its own inherent resilience. Thus the masking element is firmly in engage- ment with the tubular component 10 over the selected area, such that this area is effectively and securely masked. The required surface treatment to the unmasked area(s) of the component 10 can then be carried out. If this treatment comprises the application of a layer of e.g. adhesive I or metal, then the chamfered edge 14 of the masking element ensures that this element can be removed and leave a clean edge to the applied layer of e.g. adhesive or metal: if instead the end of the element 12 was flat, there would be a build up of the applied material of the layer against it, such that the layer would tend to tear at its junction with the element 12 upon removal'of the latter.
Referring to Figure 2, there is shown a modified shape of re-usable masking element 22 fitted to one end of the heat-shrinkable tubular component 10. Element 22 is in the form of a cap having inner and outer circumferential skirts 23,24 which are spaced apart to receive an end por tion of the component 10 therebetween. The annular space between the two skirts 23,24 is slightly less than the wall thickness of the component 10, so that the latter will be compressed slightly against its own inherent resilience and therefore the skirts 23,24 press firmly against the inner and outer surfaces of the component 10. This again provides for effective masking of the areas concerned.
Referring to Figure 3, there is shown a re-usable masking element in the form of a flexible or semi-flexible tubular member 32 of outer diameter greater than the inner diameter of the tubular component 10. The masking element is inserted into the component 10 by folding or kinking it along its length as shown, then pushing-it into one end of the component 10 and releasing it. The element 32 then expands radially under its own resilience, as far as the inner diameter of the component 10 will allow. The masking element thus presses firmly against the inner surface of the component 10 over a substantial portion of the cir cumference of the latter.
It will be appreciated that each of the masking elements which have been described can be removed readily from the tubular component, after the required surface treatment of the unmasked area(s) has been carried out. The masking elements can then be re-used.

Claims (10)

1) A method of masking a selected area or selected areas of a tubular component prior to treating unmasked surface areas, comprising fitting a re-usable masking element to the tubular component, the tubular component and/or the masking element resiliently deforming so as to be urged together over the selected area or areas of the tubular component.
2) A method as claimed in claim 1, in which the tubular component comprises a heat-shrinkable tubular component of plastics material.
3). A method as claimed in claim 1 or 2, in which the re-usable masking element comprises a tubular member which is fitted within one end of the tubular component to mask an area of the inside surface adjacent that end.
4) A method as claimed in claim 3, in which the tubular masking member is chamfered around its inner eddge at one end thereof.
5) A method as claimed in claim 1 or 2, in which the re-usable masking element comprises a tubular member which is fitted around the outside of the tubular component to mask an area of its outer surface.
6) A method as claimed in claim 5, in which the tubular masking member comprises a cap which is fitted to an end of the tubular component, the cap having an outer circumferential skirt which fits against the outer surface of the tubular component.
7) A method as claimed in claim 1 or 2, in which the re-usable masking element comprises a flexible or semi flexible tubular member of resilient material of outer diameter greater than the inner diameter of the tubular component, the masking element being fitted by first being folded or kinked along its length, then being inserted into the tubular component and allowed to expand under its own resilience and press firmly against the inner surface of the tubular component over a portion of its circumference.
8) A method of masking a selected area or selected areas of a tubular component, substantially as herein described with reference to Figure 1, Figure 2 or Figure 3 of the accompanying drawings.
9) A method of forming a tubular component with a selectedd area or selected areas of its surface treated, comprising taking a tubular component, masking a selected area or selected areas thereof using a method as claimed in any preceding claim, subjecting unmasked areas of the tubular component to a surface treatment, and then removing the masking element for re-use.
10) A tubular component when formed by a method as claimed in claim 9.
Published 1989 atThe Patent Office, State HouBe,66171 High Holbom, LondonWClR4TP. Further copies maybe obtained from The fttentoftlee. Sales Branch, St Mary Cray, Orpington, Rent BR5 3RD. Printed by Multiplex techniques ltd, St Mary Cray, Kent, Con. 1187
GB8805053A 1988-03-03 1988-03-03 Masking tubular components Withdrawn GB2215426A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8805053A GB2215426A (en) 1988-03-03 1988-03-03 Masking tubular components
EP19890302022 EP0331455A3 (en) 1988-03-03 1989-03-01 Mask and masking method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8805053A GB2215426A (en) 1988-03-03 1988-03-03 Masking tubular components

Publications (2)

Publication Number Publication Date
GB8805053D0 GB8805053D0 (en) 1988-03-30
GB2215426A true GB2215426A (en) 1989-09-20

Family

ID=10632771

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8805053A Withdrawn GB2215426A (en) 1988-03-03 1988-03-03 Masking tubular components

Country Status (2)

Country Link
EP (1) EP0331455A3 (en)
GB (1) GB2215426A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5299612A (en) * 1989-10-19 1994-04-05 Sumitomo Rubber Industries, Inc. Pneumatic radial tire with high cornering and steering stability
JPH086554Y2 (en) * 1989-11-17 1996-02-28 名古屋油化株式会社 Masking material mounting structure
US8959765B2 (en) 2012-07-26 2015-02-24 Caterpillar Inc. Method for making a temporary turbocharger compressor seal and temporary turbocharger compressor seal made by same
CN103212505B (en) * 2013-03-18 2017-08-29 深圳市振勤电子科技有限公司 The barrier structure of metal material spraying
CN109530130A (en) * 2018-12-29 2019-03-29 佛山市山高峰包装材料科技有限公司 A kind of multi-purpose bottle cap fixture for paint-spraying production line

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB323399A (en) * 1929-02-07 1930-01-02 New Eccles Rubber Works Ltd Improvements in coated metal rods or tubes
GB458696A (en) * 1935-07-25 1936-12-24 William Tanner Improvements in or relating to appliances for use in making pipe joints
GB610870A (en) * 1945-04-28 1948-10-21 Aircraft Screw Prod Co Wire thread bushings
GB845985A (en) * 1955-11-12 1960-08-24 Emi Ltd Improvements in or relating to the formation of electrically conducting layers
GB1162738A (en) * 1966-12-19 1969-08-27 Standard Pressed Steel Co Workpiece Holding Device
GB1206049A (en) * 1967-03-07 1970-09-23 Thomson Houston Comp Francaise Methods of machining perforate electrodes from pyrolytic graphite
GB2076106A (en) * 1980-05-19 1981-11-25 Raychem Corp Plug for sealing a pipeline
GB2149468A (en) * 1983-11-08 1985-06-12 Raychem Ltd Heat shrinkable pipe coupling

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE543319C (en) * 1932-02-04 Hermann Struebe Protective cap or protective sleeve to be attached to protruding body parts when applying paint to surfaces
US2359975A (en) * 1942-05-18 1944-10-10 Duggan James Edward Paint mask structure
US2328203A (en) * 1942-05-18 1943-08-31 Duggan James Edward Paint mask structure
US2363845A (en) * 1942-05-18 1944-11-28 Duggan James Edward Mask structure
US2363843A (en) * 1942-05-18 1944-11-28 Duggan James Edward Paint mask structure
US2358151A (en) * 1943-01-06 1944-09-12 Duggan James Edward Mask structure
US2363846A (en) * 1943-07-19 1944-11-28 Duggan James Edward Paint mask structure
GB913642A (en) * 1958-02-05 1962-12-19 Polymer Corp Method and apparatus for coating
US3226245A (en) * 1958-02-05 1965-12-28 Polymer Corp Coating method and apparatus
US3565664A (en) * 1968-01-24 1971-02-23 Schlumberger Technology Corp Methods for masking selected portions of articles to be coated
US3667988A (en) * 1969-07-09 1972-06-06 Nagoya Yukagaku Kogyo Kk Masking in surface treatment of articles
US3850141A (en) * 1973-06-27 1974-11-26 Pep Inventions Inc Bag type cover arrangement for shielding brake adjusters during manufacture of railroad cars
US4656058A (en) * 1980-08-08 1987-04-07 Stark William C Paint shields and painting methods
DE3338801A1 (en) * 1983-10-26 1985-05-15 Bayerische Motoren Werke AG, 8000 München PROTECTIVE COVER FOR THE PISTON ROD OF A TELESCOPICABLE SPRING ELEMENT
DE8800437U1 (en) * 1988-01-15 1988-03-03 Claassen, Henning J., 2120 Lueneburg, De

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB323399A (en) * 1929-02-07 1930-01-02 New Eccles Rubber Works Ltd Improvements in coated metal rods or tubes
GB458696A (en) * 1935-07-25 1936-12-24 William Tanner Improvements in or relating to appliances for use in making pipe joints
GB610870A (en) * 1945-04-28 1948-10-21 Aircraft Screw Prod Co Wire thread bushings
GB845985A (en) * 1955-11-12 1960-08-24 Emi Ltd Improvements in or relating to the formation of electrically conducting layers
GB1162738A (en) * 1966-12-19 1969-08-27 Standard Pressed Steel Co Workpiece Holding Device
GB1206049A (en) * 1967-03-07 1970-09-23 Thomson Houston Comp Francaise Methods of machining perforate electrodes from pyrolytic graphite
GB2076106A (en) * 1980-05-19 1981-11-25 Raychem Corp Plug for sealing a pipeline
GB2149468A (en) * 1983-11-08 1985-06-12 Raychem Ltd Heat shrinkable pipe coupling

Also Published As

Publication number Publication date
EP0331455A3 (en) 1991-01-09
GB8805053D0 (en) 1988-03-30
EP0331455A2 (en) 1989-09-06

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