• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a stabilized pipe (1) with a reduced cross-section having at least one strapping element (2) for insertion into a pipe to be renovated, the at least one strapping element (2) in contact with at least part of the outer surface of the pipe (1.2) of the pipe (1.5) with a reduced cross-section. is brought and has no material connection to the pipe outer surface (1.2) of the pipe (1.5) with reduced cross-section, the strapping element (2) being designed as a band; with individual strapping elements (2) in the form of straps which are spaced apart from one another or a single strapping element (2) in the form of a strap is placed helically around the cross-section reduced pipe (1.5), which is thereby characterized in that the ends (2.1, 2.2) of a strapping element (2), which is designed as a band and is spaced apart from another strapping element (2), are connected by a welding process and / or a laser welding process and / or an adhesive process , or the ends of the strapping element (2) designed as a band, which is laid helically around the pipe (1.5) with reduced cross-section, are connected to the band itself by a welding process and / or a laser welding process and / or a gluing process.
    公开号:AT17192U1
    申请号:TGM8007/2021U
    申请日:2014-06-18
    公开日:2021-08-15
    发明作者:Krause Frank
    申请人:Rehau Ag & Co；
    IPC主号:
    专利说明:

    description
    STABILIZED CROSS SECTION REDUCED PIPE
    The present invention relates to a stabilized pipe with reduced cross-section and a method for its stabilization.
    In addition, the invention relates to a pipe system with a pipe to be rehabilitated, in which the stabilized cross-section-reduced pipe is introduced.
    In the trenchless renewal of existing pipelines, plastic pipes with a folded profile are used according to the prior art to bring these cross-sectional reduced pipes into the existing line, to unfold there, that is, to restore their original profile, which leads to a lining of the existing line comes. As a result, damage to the existing line, such as breaks, misalignments in sleeves, ingrown roots, leaks, etc., can be repaired in a simple manner.
    The plastic pipes are generally folded immediately after the extrusion and first cooling. The stresses introduced into the tube when it is folded essentially on the outside of the tube are frozen in the tube by cooling. When the folded pipes have been inserted into the existing line, the pipes are returned to their original cross-section by re-reaching the forming temperatures and utilizing the memory effect. This is done by applying pressure and temperature, for example by introducing hot water or steam into the folded tube.
    If the pipes are heated prior to installation, for example during transport to the construction site or during storage in countries with very high temperatures, such as countries in the equatorial region and in particular in the Mediterranean and the Middle East, it can in particular happen that Temperatures can be reached at which the deformation of the folded tubes takes place unintentionally. This means that these pipes can no longer be laid.
    The object of the present invention is therefore to provide a pipe with a reduced cross-section which is stabilized in such a way that it withstands, in particular, the action of elevated temperature without it being deformed in an uncontrolled manner or assuming its original shape again. Such a pipe with a reduced cross-section should be easy to provide and inexpensive.
    The object is achieved according to claim 1.
    In the context of the present invention, a stabilized cross-section-reduced pipe is proposed with at least one strapping element for insertion into a pipe to be renovated, the at least one strapping element being brought into contact with at least part of the outer surface of the cross-section-reduced pipe and no material connection to it the pipe outer surface of the pipe with reduced cross-section, the strapping element being designed as a band, with individual strapping elements in the form of bands that are spaced apart from one another or a single strapping element in the form of a band being placed helically around the pipe with reduced cross-section, which is characterized in that the ends of each strapping element, which is designed as a band, and is arranged at a distance from a further strapping element, by a welding process and / or laser welding process and / or a gluing process are connected, or the ends of the strapping element designed as a band, which is placed helically around the pipe with reduced cross-section, are connected to the band itself by a welding process and / or a laser welding process and / or a gluing process.
    A stabilized cross-section reduced pipe with the above features withstands the action of elevated temperature without it being deformed in an uncontrolled manner or assuming its original shape again, and is easily accessible and inexpensive.
    Many thermoplastic polymer materials are suitable as the polymer material for the pipe, with particular preference being given to: polyolefins, including polyethylene and polypropylene, polyvinyl chloride, polyamide, polyester, and polystyrene.
    In the context of the invention, it is very particularly preferred if the pipe contains or consists of crosslinked polyethylene (PE-X).
    According to the invention it was also recognized that the cross-section-reduced tube has a U-shaped, or C-shaped, or W-shaped, or X-shaped, or Y-shaped or similarly shaped cross section generated by folding.
    [0012] Pipes with reduced cross-sections with cross-sections produced by folding in accordance with the above-mentioned form are particularly well suited to being introduced into pipes to be rehabilitated.
    In an advantageous embodiment of the present invention, the strapping element contains a polymer material or consists of a polymer material.
    In another embodiment, it contains a metal or consists of a metal.
    In a further embodiment it contains a textile or it consists of a textile.
    A particularly suitable polymer material in this context is polyethylene terephthalate (PET), and it is also possible to produce the strapping element from polyamide (PA) or from polypropylene (PP).
    In a favorable further development of the invention it can be provided that the polymer material is reinforced by fibers. Fibers of an inorganic nature and / or fibers of an organic nature, for example, are suitable as fibers for this purpose. For example, reinforcement with fibers selected from glass fibers, carbon fibers, rock fibers, ceramic fibers, metal fibers, aramid fibers, polyester fibers, polyamide fibers and others can take place. Combinations of the aforementioned fibers can also be used. But also natural reinforcing fibers, so-called plant fibers, such as fibers of cotton, kapok, poplar fluff, bamboo, nettle, hemp, jute, linen, ramie, wood fibers, sisal, Manila hard fiber, or coconut can be used to reinforce the polymer material. Finally, fibers of animal origin are also suitable, such as fibers of wool, alpaca, lama, vicuna, guanaco, angora, rabbit fur, cashmere, camel hair, mohair, goat hair, cattle hair, horsehair and silks such as mulberry silk, tussah silk and mussel silk.
    In the context of the invention described above, a suitable metal is, for example, iron, steel, stainless steel, aluminum, copper, magnesium, brass, bronze, as well as alloys and mixtures of the aforementioned metals, it also being possible for further components to be included.
    A textile fabric in the form of a woven or scrim or knitted or knitted fabric or fleece can be provided as the textile.
    In the context of the present invention it is further advantageously provided that the strapping element, which is brought into contact with at least part of the outer surface of the pipe with reduced cross-section and has no material connection to the outer surface of the pipe with reduced cross-section, is a band or a braid or a knitted fabric or a Braid or a parallel thread or filament array is selected.
    Particularly suitable bands are those which are formed with a band width of> approx. 5 mm and a band thickness of> approx. 0.3 mm. Such tapes made of PET, which is essentially non-stretchable, can be used at intervals of approx. 30 cm for pipes with reduced cross-sections of dimensions DN 100, for DN 200 at intervals of approx. 50 cm and for larger dimensions at intervals of up to approx m each can be arranged as a single strapping element. In another embodiment of the present invention, a single strapping element, for example in the form of a band, can be screwed around the pipe with reduced cross-section and stabilize it, the ends of the band then being fixed to the band itself. The pitch of the screw-like arrangement of the belt formed in this way on the pipe with a reduced cross-section can be selected within wide limits.
    It was recognized as particularly favorable in the context of the present invention that the ends of the strapping element by a welding process and / or a laser welding process and / or a gluing process and / or a latching process and / or a latching process and / or a folding process and / or a stapling process and / or a tensioning process and / or a binding process and / or an embossing process can be connected.
    By a welding process and / or a laser welding process and / or a gluing process and / or a latching process and / or a latching process and / or a folding process and / or a stapling process and / or a clamping process and / or a binding process and / or a The embossing process allows the ends of the strapping element to be connected in a simple manner. This connection is tensile, stable, and stabilizes the pipe with reduced cross-section by ensuring its folded shape even when exposed to elevated temperatures - such as those that occur in the equatorial region and in the Mediterranean region and in the Middle East.
    In the context of the present invention, a very advantageous development is provided in which the strapping element contracts when energy is supplied.
    The strapping element is selected in such a way that it contracts under the action of energy. In the context of this invention, contracting is understood to mean that the strapping element is shortened, that is to say that its length changes significantly.
    A strapping element according to the type described above is therefore able to contract under the action of energy, that is to say to change its length significantly. In the context of the present invention, it has been found to be advantageous if a polyethylene terephthalate (PET) or a polypropylene (PP) that is mono-axially or biaxially pre-stretched is preferably selected as the polymer material for the strapping element.
    A band or a braid or a knitted fabric or a plait or a parallel thread or filament array that is pre-stretched is particularly capable of contracting, that is to say, of shortening its length, when exposed to the action of energy.
    By contracting the strapping element, i.e. shortening the length of the strapping element, which is brought into contact with at least part of the outer surface of the pipe with reduced cross-section and has no material connection to the outer surface of the pipe with the reduced cross-section, the reduction in cross-section of the pipe occurs is stabilized in an improved manner. The contraction can be selected within wide limits depending on the type of strapping element, the polymer material selected for it, its thickness and other dimensions and the level of the applied energy.
    In a further preferred embodiment of the present invention it is provided that the strapping element has a desired tear point.
    By providing that the strapping element has a desired tear point, it is possible in a particularly advantageous manner to cause the strapping element to tear when a certain pressure is applied in the lumen of the tube, so that it loses its stabilizing function. The strapping element which has a desired tear point will preferably tear at this desired tear point and, with a suitable design of the strapping element, also tear through completely. This enables the tube with the reduced cross-section to be reshaped in a particularly simple manner.
    The method for stabilizing a pipe with reduced cross-section according to the present invention comprises the steps:
    - Providing a pipe
    - Reduction of the cross section of the pipe
    - Provision of a strapping element
    - Specifying the length of the strapping element
    - Laying the strapping element around the circumference of the pipe with reduced cross-section
    - Positioning of sections of the strapping element in such a way that they abut or overlap
    - The abutting or touching ends of the strapping element are spaced apart from the outer surface of the pipe
    - Connecting the abutting or touching ends of the strapping element so that it does not have a material connection to the outer surface of the pipe with reduced cross-section.
    In this way, such a tube can be made available in a simple and reproducible manner and inexpensively.
    In a further very preferred development of the method it can be provided that the abutting or touching ends of the strapping element by a welding process and / or a laser welding process and / or a gluing process and / or a latching process and / or a latching process and / or a folding process and / or a stapling process and / or a tensioning process and / or a binding process and / or an embossing process can be connected.
    Here, particular care must be taken that there is no mechanical and / or thermal damage to the pipe during attachment and connection of the strapping element.
    Likewise, when connecting the ends of the strapping element, no material connection is established between the outer surface of the pipe and the strapping element.
    The connection of the abutting or touching ends of the strapping element by a welding process and / or a laser welding process and / or a gluing process and / or a latching process and / or a latching process and / or a folding process and / or a stapling process and / or a tensioning process and / or a binding process and / or an embossing process leads to a firm and secure bond, which in particular withstands the force that the folded tube exerts when it tries to reset itself under thermal stress.
    The welding of the ends of the strapping element can be carried out in a plastic welding process, such as, for example, a mirror or friction welding process, or in a laser welding process. A particularly strong and safe shelf life is thus achieved.
    In other favorable embodiments of the invention, the connection of the ends of the strapping element can be carried out by a gluing process. A particularly simple and permanent connection can thus be achieved.
    In a further embodiment, a latching process can establish the connection, with each complementary latching means which are suitable for a connection being arranged at the ends of the strapping element.
    The provision of a latching process for establishing the connection of the ends of the strapping element can be provided in a further embodiment.
    Finally, the connection of the ends of the strapping element can also be established by a folding process and / or a stapling process and / or a tensioning process and / or a binding process and / or an embossing process.
    It has been found to be advantageous within the scope of the invention if the abutting or touching ends of the strapping element are spaced from the outer surface of the pipe, so that there is no mechanical and / or thermal damage to the pipe during the connection of the ends of the strapping element. Likewise, when connecting the ends of the strapping element, no material connection is established between the outer surface of the pipe and the strapping element.
    It has been found to be advantageous in the context of the present invention if the strapping element is arranged with a bias on the outer surface of the tube
    will.
    A force of 0.1 to 300 N, in particular a force of 2 to 50 N, has proven effective as a preload.
    By providing a pretension with which the strapping element is applied to the outer surface of the pipe, a particularly secure positioning of the strapping element is achieved.
    As a result, the positioning of the strapping elements on the outer surface of the pipe is secured against shifting or slipping, so that production of the stabilized pipe with reduced cross-section according to the invention is possible with less susceptibility to errors.
    In order to achieve a safe and durable stabilization of the pipe with reduced cross-section, it can advantageously be provided to compress the legs of the pipe folded into a U-profile by, for example, clamping jaws with a shape complementary to the pipe outer surface.
    The ends of the strapping element are then connected.
    The last step is to remove the pressure on the legs of the U-profile, for example by loosening the mold jaws.
    The pipe with a reduced cross-section according to the invention is thus ready for use.
    In a very favorable development of the method it can be provided to use a strapping element which contracts when energy is supplied. A strapping element, as described above, can be used particularly advantageously for this purpose.
    In the method, energy can then advantageously be supplied to the strapping element as the last step, so that it contracts.
    In a preferred embodiment of the present invention it is provided that, after the strapping element has been applied to the outer surface of the tube and the connection, energy acts on the strapping element, causing it to contract, that is, its length is shortened.
    As the energy acting on the strapping element, heat, radiant energy, radiant heat, IR radiation or a combination of the above can be selected.
    By allowing heat, radiant energy, radiant heat, IR radiation or a combination of the aforementioned energies to act, the strapping element contracts.
    In order to achieve a safe and durable stabilization of the pipe with reduced cross-section, it can advantageously be provided to compress the legs of the pipe folded into a U-profile by, for example, clamping the pipe with mold jaws with a shape complementary to the pipe outer surface.
    Then the ends of the strapping element are connected, after their connection the strapping element is contracted by exposure to heat, radiant energy, radiant heat, IR radiation or a combination of the aforementioned energies.
    The last step is to remove the pressure on the legs of the U-profile, for example by loosening the mold jaws.
    The pipe with a reduced cross-section according to the invention is thus ready for use.
    The pipe with a reduced cross-section according to the invention can advantageously be wound onto reels without the reduction in cross-section being impaired or reshaped.
    Finally, the invention also comprises a pipe system with a pipe to be rehabilitated, into which the stabilized pipe with reduced cross-section is introduced, according to claim 6.
    Such a pipe system with a pipe to be rehabilitated, into which the stabilized pipe with reduced cross-section is introduced, is particularly easily accessible by the present invention.
    By severing or removing the strapping elements - for which the intended intended tear point can be used particularly advantageously - the stabilized cross-sectional reduction can be
    Decorated pipe that is inserted in a pipe to be rehabilitated, reshape in this, d. H. again approximately assume its generally circular cross-section, so that it rests against the inner wall of the pipe to be rehabilitated and lines it. In this way, a pipe to be rehabilitated can easily and inexpensively be lined and rehabilitated in this way using the stabilized pipe with reduced cross-section of the present invention.
    Further important features and advantages of the invention emerge from the subclaims, from the figures and from the associated description of the figures.
    It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the respectively specified combination, but also in other combinations or on their own, without departing from the scope of the present invention.
    Preferred exemplary embodiments of the invention are shown in the figures and are explained in more detail in the following description, with the same reference symbols referring to the same or functionally identical or similar components.
    The present invention is explained in more detail with reference to the accompanying figures. To this end, show:
    Fig. 1 is a cross-sectional view of a tube and a view of a strapping element;
    Figure 2 is a cross-sectional view of a pipe with reduced cross-section and a strapping element;
    Fig. 3 is a cross-sectional view of a reduced cross-section tube around which a strapping element is wrapped;
    Fig. 4 is a cross-sectional view of a stabilized reduced cross section tube;
    Fig. 5 is a cross-sectional view of a reduced cross-section tube around which a strapping element is wrapped in another embodiment;
    Figure 6 is a cross-sectional view of a stabilized reduced cross section tube in another embodiment.
    In Fig. 1, a pipe 1.1 is shown and provided in a cross-sectional view, which has a pipe outer surface 1.2. The pipe 1.1 further comprises a pipe wall 1.3 which delimits a pipe lumen 1.4.
    The pipe is made of polymer material, preferably made of crosslinked polyethylene (PE-X).
    A strapping element 2 is shown and provided to the left of the pipe. The strapping element 2 is designed as a band made of polypropylene.
    2 shows a cross-sectional view of the pipe 1.5 with reduced cross-section.
    For this purpose, the tube 1.1 is folded in such a way that it has approximately a U-profile. Such a profile is also referred to as a "U-liner". In this state, the pipe 1.5 with reduced cross-section has a smaller cross-sectional area than the pipe 1.1 according to FIG. 1, which is not folded.
    A strapping element 2, which is designed as a band and which has a predetermined length, is shown under the pipe 1.5 with a reduced cross-section. The predetermined length is based on the circumference of the pipe 1.5 with a reduced cross-section, whereby it is selected to be longer, this can be 10 to 30%.
    The strapping element 2 has a first end 2.1 and a second end 2.2. In Fig. 3 is a cross-sectional view of the reduced cross-section pipe 1.5 is shown, which a
    Has U-profile.
    The strapping element 2 is wrapped around the pipe, the ends 2.1, 2.2 of the strapping element 2 overlapping a little on the pipe outer surface 1.2 on one leg of the U-profile. For the intermediate stabilization of the U-profile of the pipe 1.5 with reduced cross-section, the two upwardly pointing legs of the U-profile are pressed together so that they almost touch each other.
    4 shows a cross-sectional view of the stabilized pipe 1 with reduced cross-section.
    In the stabilized pipe 1 with a reduced cross-section, the ends 2.1, 2.2 of the strapping element 2 are connected to one another in a connecting section 3 on the pipe outer surface 1.2 on one leg of the U-profile. The connection can preferably be made by a welding process. The strapping element 2 is brought into contact with at least part of the pipe outer surface 1.2 of the pipe 1.5 with reduced cross-section. The strapping element 2 stabilizes the U-profile of the pipe 1.5 with reduced cross-section. The upwardly pointing legs of the U-profile are no longer compressed and relaxed again. As a result, the strapping element 2 sits tightly on the outer pipe surface 1.2 of the pipe 1.5 with a reduced cross-section and stabilizes the U-profile.
    According to the present invention, no material connection is formed between the strapping element 2 and the pipe outer surface 1.2 of the pipe 1.5 with reduced cross-section. The strapping element 2 has in the vicinity of the legs of the U-profile positioned next to one another a nominal tear point 2.3, which allows the stabilized cross-section-reduced pipe 1 to be unfolded again after being introduced into a pipe to be rehabilitated by applying pressure and temperature and approximately in its to bring originally round shape, the strapping element 2 tearing and tearing at the intended tear point 2.3.
    5 shows in another embodiment a cross-sectional view of a pipe 1.5 with reduced cross-section, around which a strapping element 2 is wrapped, the ends of which are connected to one another in a connecting section 3 on the pipe outer surface 1.2 on one leg of the U-profile.
    As can be seen from FIG. 5, the length of the strapping element 2 is dimensioned such that it is greater than the circumference of the cross-section-reduced tube 1.5 to be encompassed by the strapping element 2, which is indicated in particular in the lower region of FIG. The strapping element 2 is one that contracts when exposed to heat, radiant energy, radiant heat, IR radiation or a combination of the aforementioned energies.
    6 shows a cross-sectional view of the stabilized pipe 1 with a reduced cross-section, which can be produced by applying energy to the state shown in FIG.
    The stabilized cross-section-reduced pipe 1 comprises a cross-section-reduced pipe 1.5, around which a strapping element 2 is wrapped, which is connected to one another at its ends at the connecting section 3 on the pipe outer surface 1.2 on one leg of the U-profile.
    As a result, the pipe 1.5 with reduced cross-section is stabilized in the form of the U-profile.
    Here too, the strapping element 2 has, in the vicinity of the legs of the U-profile positioned next to one another, a desired tear point 2.3, which allows the strapping element 2 to be torn in and through.
    According to the present invention, no material connection is formed between the strapping element 2 and the pipe outer surface 1.2 of the pipe 1.5 with reduced cross-section.
    Austrian
    REFERENCE LIST
    1.1 1.2 1.3 1.4 1.5
    2.1 2.2 2.3
    stabilized pipe with reduced cross-section
    Outer pipe surface pipe wall
    Tube lumen tube with reduced cross-section Strapping element
    first end
    second end intended tear point connecting section
    AT 17192 U1 2021-08-15
    权利要求:
    Claims (6)
    [1]
    1. Stabilized pipe with reduced cross-section (1) with at least one strapping element (2) for insertion into a pipe to be rehabilitated, the at least one strapping element (2) being brought into contact with at least part of the outer pipe surface (1.2) of the pipe (1.5) with reduced cross-section and no material connection to the pipe outer surface (1.2) of the pipe with reduced cross-section (1.5), the strapping element (2) being designed as a band, with individual strapping elements (2) in the form of bands attached to each other on the pipe with reduced cross-section (1.5) are spaced apart, or a single strapping element (2) in the form of a band is placed helically around the pipe (1.5) with reduced cross-section, characterized in that the ends (2.1, 2.2) each of a strapping element (2) which is designed as a band, and is arranged at a distance from a further strapping element (2) by a welding process and / or a laser cut whitening process and / or a gluing process are connected, or the ends of the strapping element (2), which is designed as a band and which is placed helically around the pipe (1.5) with reduced cross-section, on the band itself by a welding process and / or a laser welding process and / or a gluing process are connected.
    [2]
    2. Stabilized cross-section-reduced pipe (1) according to claim 1, characterized in that the cross-section-reduced pipe (1.5) has a U-shaped, or C-shaped, or W-shaped, or X-shaped, or Y-shaped or generated by folding has a similarly shaped cross-section.
    [3]
    3. Stabilized cross-section reduced pipe (1) according to claim 1 or 2, characterized in that the strapping element (2) contains a polymer material or consists of a polymer material, or contains a metal or consists of a metal, or contains a textile or consists of a textile consists.
    [4]
    4. Stabilized cross-section reduced pipe (1) according to one of the preceding claims, characterized in that the strapping element (2) contracts when energy is supplied.
    [5]
    5. Stabilized cross-section reduced pipe (1) according to one of the preceding claims, characterized in that the strapping element (2) has a desired tear point (2.3).
    [6]
    6. Pipe system with a pipe to be rehabilitated into which the stabilized pipe with reduced cross-section (1) is inserted.
    In addition 3 sheets of drawings
    类似技术:
    公开号 | 公开日 | 专利标题
    DE112011100676B4|2021-02-04|Lining element and method for producing a lining element
    DE2854618C2|1986-07-10|Method and arrangement for welding plastic components
    DE2455503A1|1975-05-28|PROCESS FOR CONNECTING COMPONENTS OF CROSSLINKED POLYMERS
    DE102016010059A1|2017-02-23|Tubular device having a plurality of left and right braided fibers
    DE10353777A1|2005-06-23|Fabric hose and blocking thread for use in a fabric hose
    EP2454515A1|2012-05-23|Tubular liner for the restoration of fluid-conveying pipe systems, and method for the production thereof
    EP3314158B1|2019-06-19|Pipe lining material for use for at least two predefined pipeline nominal widths
    DE102009050084A1|2011-07-28|Multilayer hose with a tubular inner film, apparatus and method for its production and its use
    AT17192U1|2021-08-15|Stabilized pipe with reduced cross-section and method for its stabilization
    DE10009305A1|2001-09-06|Steel pipe used for transport of fluids under high pressure, has outer corrosion-proof protective sheath including plastic layer and crack stopper zone formed by wrapping bandage made of fiber material, around pipe
    EP1909012A2|2008-04-09|Insulation sleeve
    DE2103581A1|1971-08-05|Pipeline for transporting cold liquids
    DE102015117372B4|2020-05-14|Device for curing a lining hose
    EP0794863B1|1998-07-01|Sealing strip for sealing pipe connections
    DE102008012924A1|2009-09-10|Process for producing a plastic component and plastic component produced by this process
    DE10212920B4|2004-03-04|Gewebeschlauch
    DE3101256A1|1982-08-05|Longitudinally split cable sleeve having a sleeve tube consisting of thermoplastic synthetic material which can be shrunk
    DE19733029C2|2002-03-28|Process for the rehabilitation of a pipeline, especially for civil engineering
    DE6601294U|1969-02-20|
    DE3833415A1|1990-04-05|Process for producing a band which can recover its shape under heat
    DE4130167A1|1993-03-18|Chemical fluid or diffusion resistant composite tube e.g. for potable water pipe
    DE102019105266A1|2020-09-03|High pressure pipe
    AT411039B|2003-09-25|Tubular heat insulation jacket manufacture involves reduction of coating length on one side of a flat foam strip which subsequently forms an inner side of the jacket
    DE4025840C3|1999-06-24|Process for the production of pipeline connections from polyolefin
    EP0623277A1|1994-11-09|Rope linkages, particularly for the strengthening of parts of trees, like limbs or crown parts
    同族专利:
    公开号 | 公开日
    DE102013106482A1|2014-12-24|
    WO2014202219A1|2014-12-24|
    AT517037A5|2016-10-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0098547A1|1982-07-02|1984-01-18|Trio Engineering Limited|Improvements relating to the lining of passageways|
    WO1987003840A1|1985-12-20|1987-07-02|Roy Binall Skott|Method and means for applying flexible liners to pipes|
    GB2357559A|1999-12-24|2001-06-27|Glynwed Pipe Systems Ltd|Multilayer liner pipe comprising a cross-linked polyolefin|
    WO2002097320A1|2001-05-29|2002-12-05|Ondeo Services|Water supply pipe liner|
    US6723266B1|2002-11-18|2004-04-20|Raymond Lippiatt|Lining of underground pipes|
    WO2010140000A1|2009-06-03|2010-12-09|Smart Pipe Company, Lp|Methods and systems for in situ manufacture and installation of non-metallic high pressure pipe and pipe liners|
    ITUA20162407A1|2016-04-08|2017-10-08|Tommaso Pavan|METHOD FOR THE REDEVELOPMENT OF CONDUCT IN PRESSURE.|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102013106482.5A|DE102013106482A1|2013-06-21|2013-06-21|Stabilized cross-section reduced pipe and method for stabilizing it|
    ATA9258/2014A|AT517037A5|2013-06-21|2014-06-18|Stabilized cross-section reduced pipe and method for its stabilization|
    [返回顶部]