EP0195683A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Coated recoverable articles
Assignee: Commscope Connectivity Belgium BVBA
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Filing: 1986-03-21
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Granted: —
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Expires: 2006-03-21
Abstract
Abstract A sleeve, which finds particular application in the environmental sealing of joints between insulated pipes, comprises heat-recoverable polymeric sheet material (2) provided at separate regions of a principle surface thereof with a layer of a heat-activatable adhesive (4) for bonding the sheet to the pipe insulation, and a layer of a sealant (6) to accomodate flexibility in the joint. A layer of a sealing material (10), having an elongation modulus greater than that of the sealant, overlies at least part of the sealant layer, to improve the pressure retention properties of the sleeve.
Inventors
- 👤 Jos Van Beersel
- 👤 Eddy Alaerts
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 12:34
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/06; B29C61/0608; B29C61/0616; F; F16; F16L; F16L59/00; F16L59/14; F16L59/16; F16L59/18; F16L59/20; B29C61/0666; B29C2061/0683; Y; Y10; Y10S; Y10S174/00; Y10S174/08; Y10T; Y10T428/00; Y10T428/13; Y10T428/1328; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2848
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
105 words
A sleeve for covering an elongate substrate, comprising heat-recoverable polymeric sheet material (2) having: (a) a first layer of a heat-activatable adhesive (4) at a first region of a principal surface of the sheet, the adhesive being arranged so as to provide a substantially annular bond between the polymeric sheet and the substrate when in use; (b) a layer of a sealant (6) at a second region of the said principal surface; and (c) a layer of sealing material (10) which overlies at least a portion of the layer of sealant, and which has an elongation modulus that is greater than that of the sealant.
Claim 2
Dependent Claim
105 words
A sleeve for covering an elongate substrate, comprising heat-recoverable polymeric sheet material (2) having: (a) a first layer of a heat-activatable adhesive (4) at a first region of a principal surface of the sheet, the adhesive being arranged so as to provide a substantially annular bond between the polymeric sheet and the substrate when in use; (b) a layer of a sealant (6) at a second region of the said principal surface; and (c) a layer of sealing material (10) which overlies at least a portion of the layer of sealant, and which has an elongation modulus that is greater than that of the sealant.
Claim 3
Dependent Claim
22 words
A sleeve as claimed in claim 1, wherein the layer of sealing material (10) is a further layer of a heat-activatable adhesive.
Claim 4
Dependent Claim
23 words
A sleeve as claimed in claim 2, wherein the layers of heat-activatable adhesive (4) and of sealing material (10) comprise the same material.
Claim 5
Dependent Claim
34 words
A sleeve as claimed in any one of the preceding claims, wherein a reinforcing sheet (8) is provided at the interface between the layer of sealant (6) and the layer of sealing material (10).
Claim 6
Dependent Claim
19 words
A sleeve as claimed in claim 4, wherein the reinforcing sheet (8) comprises a polymer, preferably a heat-recoverable polymer.
Claim 7
Independent Claim
156 words
A method of insulating a cavity around an uninsulated portion of an insulated pipe, the method comprising : (a) surrounding the uninsulated portion of pipe with a hollow casing (38); (b) installing around an end of the casing a sleeve (1) as claimed in any one of the preceding claims, such that the layer of sealant is positioned so as to bridge the end of the casing and the adjacent insulation of the pipe, substantially around their entire peripheries, and the first layer of heat-activatable adhesive (4) is positioned so as to form a substantially annular bond between the sleeve and the insulation of the pipe; (c) neating the sleeve to cause the polymeric material to recover, the sealant (6) and sealing material (10) to soften and the heat-activatable adhesive to be activated; and (d) providing insulating material in the space (40) around the uninsulated portion of the pipe, between the pipe and the hollow casing.
Claim 8
Dependent Claim
39 words
A method as claimed in claim 6, in which the insulating material is foamable and is supplied to the said space after installation of the hollow casing, the method including the further step causing the insulating material to foam.
Claim 9
Dependent Claim
37 words
A method as claimed in claim 6 or claim 7, which further comprises the step of applying a test pressure to the said space, after the installation of one or more sleeves to seal the said space.
Claim 10
Dependent Claim
108 words
A pipe joint which comprises: (a) two insulated pipes (30) joined together, the insulation of each of which ends short of the joint; (b) a hollow casing (38) surrounding the exposed end portions of the joined pipes; and (c) a sleeve (1) as claimed in any one of claims 1 to 5, positioned such that the layer of sealant (6) bridges an end of the casing and an end of the insulation of one of the pipes, around substantially their entire peripheries, and recovered such that the first layer of heat-activatable adhesive (4) forms a substantially annular bond between the sleeve and the insulation of the said pipe.
Claim 11
Dependent Claim
126 words
A kit of parts for covering a pipe, comprising: (a) a first polymeric sheet comprising a layer of sealing material; and (b) a second polymeric sheet which is heat-recoverable and has layer of a heat-activatable adhesive at a first region of a principal surface thereof, and a layer of a sealant, at a second reg.ion of the said principal surface, the elongation modulus of the sealant being less than that of the sealing material; the sheets being of such a shape and size that they can be positioned with the sealing material layer between the second sheet and the pipe, such that at least part of the heat-activatable adhesive layer of the second sheet is available to bond the second sheet to the pipe on heating.
Claim 12
Dependent Claim
126 words
A kit of parts for covering a pipe, comprising: (a) a first polymeric sheet comprising a layer of sealing material; and (b) a second polymeric sheet which is heat-recoverable and has layer of a heat-activatable adhesive at a first region of a principal surface thereof, and a layer of a sealant, at a second reg.ion of the said principal surface, the elongation modulus of the sealant being less than that of the sealing material; the sheets being of such a shape and size that they can be positioned with the sealing material layer between the second sheet and the pipe, such that at least part of the heat-activatable adhesive layer of the second sheet is available to bond the second sheet to the pipe on heating.
Claim 13
Dependent Claim
33 words
A kit of parts as claimed in claim 10, wherein the first sheet comprises a polymeric sheet, that preferably is recoverable, and that is coated, at least in part, with the sealing material.
References Cited (Backward Citations)
No citation records indexed.
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