DE1586289A1 - Method for embedding wires or the like. in an embedding compound and a package body produced by this method - Google Patents

Description

45 722

Swiss Isola Works, Breitenbach (Switzerland)

Method for embedding wires or the like in an embedding compound and package bodies produced by this method

The invention relates to a method for embedding wires, insulated electrical single wire and cell conductors, cords, hoses, ropes, which can be rolled up into bundles flexible plastic profiles and the like in a bundle collapsible objects in a flexible embedding compound and a package body produced by this method.

Wires. Hoses, insulated electrical conductors and similar elongated objects are often assembled in rings. »I ¹ These rings have to be held together somehow for storage and transport. Up to now this has been done by binding once or several times} by tape and acting with paper, fabric or plastic tapes or similar measures However, sticking the individual turns has disadvantages, first of all this is done

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Glue usually only along the lines of contact and results therefore no great mechanical resistance. Second, there is a risk of hardening adhesives that as a result of mechanical stress on the rings, z. B. during transport, the bond pops up and the turns to solve. Adhesives that remain plastically deformable and also retain their adhesiveness are, however, in the later Use of the objects wound into rings is disadvantageous in some respects.

According to the invention, the mutual anchoring of the takes place a bundle of collapsible elongated objects by means of a method of the type mentioned at the beginning, which is characterized by laying them in layers the bundle elements, forming objects into bundles,

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Bring / in the gaps formed by cten laid bundle elements and heating, hardening and drying of the embedding compound, in which there is an increase in volume due to gas elimination or vapor formation and pores or cavities arise and bridges between sections of individual bridge elements are formed from solidified parts of the embedding compound, which effect the mutual anchoring of the bundle elements.

The introduction of the starting components of the embedding compound can be done by immediately prior to the laying process are applied to the object to be embedded. However, the starting material can also be fed directly into the gaps that are constantly being created during the laying process or introduced into the cavities between the individual bundle elements after a bundle body has been produced will. It is also possible that the starting material is based on a mechanically solid support element, e.g. B. on a porous film, tape or cord during the laying process is introduced.

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The transfer of the embedding material into a stable, not adhesive form with a simultaneous increase in volume to form material bridges between the individual cavities can be effected by vulcanization, condensation, polyaddition or by heat treatment, depending on the type of embedding compound to be used or its starting components.

The package body produced by the method according to the invention is characterized in that the bundle elements combined to form a bundle at least over the largest Part of their surface are surrounded by a flexible embedding compound interspersed with pores in such a way that the latter fills the spaces between the bundle elements and at least partially surrounds the outsides of the outermost bundle elements, with the embedding compound in between Bridges of material formed in the pores and surface sections of the bundle elements penetrate the spaces and Connect adjacent surface sections of bundle elements to one another and combine to form a body.

This package body can be wound up to form a ring as well as a bundle of a number which is essentially parallel be juxtaposed single strands of elongated objects, the bundle elements by a Embedding material are held together, for example a foamed plastic, a suitable swellable material or can be a thermoplastic or thermosetting plastic generally interspersed with gas pores.

Exemplary embodiments of the invention are contained in the following description and the drawing shows

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Pig. 1 shows a cross section through an inventive Package body with completely closed embedding,

2 shows a similar section through a package body t while it is still sitting on a winding form that can be separated from the body, and

3 shows a longitudinal section of the package body according to FIGS. 1 and 2.

In FIGS. 1 and 2, wire bundles consisting of individual wires 1 are shown, which in closed form form a hanging or openly an elongated conductor bundle, for example for apparatus wiring. The individual wires 1 in such arrangements usually do not lie in strict geometrical layers one above the other and also do not run absolutely exactly parallel to one another in the same individual layer. Their arrangement in a winding body as well as in an elongated component is more or less "wild", so that irregular spaces 2 are present between the bundle elements /. The irregular structure of the windings or the irregular arrangement of the individual bundle elements results in an irregular course of the Points of contact between adjacent and superimposed elements, which explains the creation of passages between the individual elements. These passages are * filled in at the latest when the initial components of the embedding material are transferred, with an info-lge increase in volume, with material bridges / SuT of the embedding mail! YSM ⁿ gaps 2 being formed. In the same way, the intermediate spaces 6 created according to FIG. 2 between the winding space delimiting elements of a coil 5 and the turns lying in their area are filled and connected by bridges of the embedding material.

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If the whole wire bundle is to be completely enveloped with the embedding compound according to FIG. 1, the space in which the embedding material expands when it is converted into its final shape, in an expedient manner by a Shape and limit the bundle by suitable means center. Such coatings are particularly indicated when objects are permanently in embedding material are to be packed. The package then remains in the Shape until the embedding material has solidified.

The introduction of the initial components of the investment material In the spaces between the bundle elements, depending on the type of mass, can be carried out in a manner known per se, for example by directly applying an emulsion or paste on the object to be embedded or on a bundle that has just been laid, by storing a grainy one, for example foamable starting material directly between the bundle elements. However, this granular starting material can can also be applied to a suitable base, for example a porous film, which is to be bundled together with the Object integrated into the body to be formed will. The film itself can consist of a material that is involved in the process of transferring the embedding compound into its stable, non-adhesive form participates actively or passively, or it can be a support element, the mechanical strength of which is sufficient for the purpose of material absorption and the intended operation, but the desired handling of the package body is not obstructed. Instead of the foil you can Of course, a baud or a string with basically the same or similar properties occurs.

Further possibilities for introducing the starting components mentioned in the cavities are aas dipping the bundle in Liquids of suitable viscosity with these without or

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using additional external pressure in the cavities penetration, or the shaking of granular or dusty components into the bundle. .

Practically all materials are suitable as embedding compounds? which, when converted into a stable, non-adhesive 3? form, experience such a permanent increase in volume that enables them to penetrate all cavities of a bundle body described, but in which no influences damaging the properties of the bundle elements may occur and the ultimate strength probably the cohesion of the Secures package body, but does not hinder its handling. the latter condition means in a package with examples ■ backlash as the electric conductor material which ^Λ withdrawn for use from the beam must ^ lems, that the strength of Yerbindungsmaterials not hinder this evaporation under an appropriate pulling force, d :. On the other hand, however, unintentional separation of the bundle in layers or in any other way is definitely excluded.

In the present example, however, it is also necessary that the embedding material is in the area of the withdrawn wire disintegrates into fragments and does not stick to the wire. However, it has a suitable embedding material the tendency to stick to the cleared item when it is broken can be done by a suitable one Treatment of the object before laying can be prevented. ·

Materials that meet the above conditions are foamable polyesters, polystyrenes, polyurethanes and Polyvinyl chloride, urea and phenolic foams, latex, Pulp etc. Your selection is based on those just mentioned Conditions, possibly also according to the demands on the surface quality of the finished package body and not

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finally according to the possible or necessary procedure for Conversion of the starting materials into the desired stable form of the embedding compound, which is carried out depending on the material Vulcanization, condensation, polyaddition, combined with or by exposure to heat alone and / or by letting it cool down, can be done.

The package body created this way has a good Dimensional stability, withstands impacts and rough handling when a flexible investment material is used and, depending on the investment material used, can be water-resistant and be flame-repellent and chemical-resistant or obtain these properties through suitable coatings. A A very important advantage is the low weight of the embedding material, which is very light due to its pores is.

Claims

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Claims (3)

"■" ■■ ■ & claims t 1. Method of embedding wires, insulated electrical wires Single wire and cable ladders, cords, hoses, ropes, flexible plastic profiles that can be rolled up into bundles and the like that can be combined into a bundle Objects in a flexible embedding compound, characterized by laying them in layers to bundle the objects forming the bundle elements, introduction of the embedding material into the laid Bundling elements (1) formed interspaces (2) and heating, curing or drying of the embedding compound, wherein in this an increase in volume occurs through gas elimination or vapor formation and pores or cavities arise and from solidified parts of the embedding compound bridges between sections of individual bundle elements (1) are formed, which the mutual anchoring Effect bundling elements (1). 2. Package body, produced by the method according to claim 1, characterized in that the bundled bundle elements (1) at least above the most of their surface is surrounded by a flexible, pore-infused embedding material in such a way that that the latter fills the spaces (2) between the bundle elements (1) and the outside of the outermost At least partially surrounds bundling elements (1), material bridges formed from the embedding compound between the pores and surface sections of the bundling elements (3) enforce the spaces and each other adjacent surface sections of bundle elements (1) connect with each other and combine into one body. - 2 009832/0447 ; ■■■ ■. ■ - V '. ■ 3. package body according to claim 2, characterized in that the bundle elements combined to form a bundle (1) are wound into a ring. 4, package body according to claim 2, characterized in that the bundle elements combined to form a bundle (1) arranged stretched out parallel to each other substantially are. 00 9? 3 2 / 0A47 it Blank page