DE1950697U - COMPOSITE MATERIAL SHEET FOR HEAT-BONDING MOLDED PARTS MADE OF ELASTIC, NON-MELTING MATERIALS. - Google Patents

Description

SnberS-K H ⁶⁹⁷ - ^ lbcr-Sche.d

Mß

Gold and

Mcß 6 9 62 D

GERMAN GOLD- UIiD SILBEIi-POHEIDEANSTALT vvr.r ^ - Frankfurt am Main, Veißfrauenstrasse 9

SK H ⁶⁹⁷ -, * e gold and

-Sche.dcinstalt formerly Roessier 1 η cc

.Γ- « ^Μ · ,, L ^Vcrb " ndma _t enalbahn "'· <2. Manufacture of molded parts

? '^ £ ^id

of molded parts from ^S £ ^meIzendcn substances "

Composite material bahr; for hot gluing of molded parts made of elastic, non-melting fabrics

, Adhesive foils have been known for a long time. They • mostly consist of one. Carrier, which is coated on one or both sides with self-adhesive coats that are sticky at normal temperature. There is also glue or adhesive / layer ¹ :. ·. made of thermoplastic. Material (with or without a backing) that is made sticky by the action of external heat. However, such thermoplastic adhesives have some major disadvantages in use. Should z. If, for example, poorly heat-conducting materials are connected to one another, such "hot-melt bonding" with external heat input can take too long, or the contact pressure to connect the joint may take too long; must necessarily be chosen too high. Materials that are sensitive to heat can be damaged by the 'mci unavoidable overheating when heat is supplied from outside. Likewise, large-area ·; Part ?: thermally sensitive products cannot be bonded evenly and securely with the conventional hot melt adhesives.

It is also known, in hot-melt adhesive processes, to generate the heat necessary for setting in the adhesive layer itself. It was also suggested, among other things, to coat wires, nets or metal foils with adhesive and then by heating of these conductors by means of resistance, Hochfre-Ii oufer ..-'- or induction heating or by Wirbelstromerzeu-% supply the rigid materials to be bonded, such as wood or metals η, with the help of hardening adhesive layer to connector :. Thermosetting resins were used for these purposes, 6 he give a hard, often brittle Xlebfilm. The adhesive resin, which initially melts due to the supplied heat, hardens or

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(B «chf * IbufKi and Schutianspr.) Hf the submitted submitted; you weight

wyjen. On AnIm ₃ you will receive photocopies of this or the F «m-

i ² , 'i. ² CU ¹⁹ J ⁵⁰⁶⁹⁷ - Putsche gold and

- 2 - ; Miber-bcheideanstalt formerly Rocssler 1 Π CC

; I-rankfurt / M. I composite material ^{web "'· 1} ^ -Ob j for adhesive bonding of molded parts made of elastic, non-melting materials. _T ; 9/6/62. D 25481. (T. 15; M.)

then sets with further heating. Liese adhesive film have a low melting viscosity and dnc to: Adhesive substances are therefore naturally well wetted. A The great disadvantage here is that these resins are only very limited; can be used. They demonstrate on a range of materials, before.

■ mainly on rubber, polyvinyl chloride, polyamides, leather and the like

j same bad adhesion. The ver j is particularly disadvantageous

: say these bonds with constant alternating bending stress

I chung. Since the adhesive film is generally very brittle, · I

: in the case of constant, changing bi a / re stress, such stresses

• binders very quickly, so that the v.-ärrnehärt- j ν baren.Harzen do not allow permanent bonds to be made.

'The use of thin, closed metal foil p.ls carrier

^: ; for the adhesives and as a current conductor also have the serious disadvantage of interrupting the adhesive layer

• the metal and thus the reduction in the strength of the bond

• des. It has therefore already been suggested as, -i.-tall for the .: Foil an easily fusible metal, we use tin, that I melts during the gluing process and in this way allows a

\ to produce an essentially continuous adhesive layer. Here% remains but the above-described disadvantage of not meeting I elasticity of the adhesive and the curing disadvantages with all

There are t partial sequelae. In addition,

1 more disadvantages. The method using a metal

I foil made of easily fusible metal as a carrier and conductor is only applicable to systems that allow the metal foil also actually to melt together at all points into statistically distributed small droplets or disks, what an essential requirement for achieving a uniform bond over the entire surface to be bonded. For this in turn one must assume that the temperature gradient. t from the inside outwardly at all points of the glue line pretty much the same is. This is at the edges of the bond and where- the parts to be joined have different thicknesses or compositions,

\ l certainly not the case.

22i, 2. 1950697. German gold and silver Schtide.instalt formerly Rocsslcr Λ IT CC i'rankfurt / M. | Composite material web ~ '· ¹ ^ - ^Ö & for the 1 icittvcrklcben of molded parts made of elastic, non-melting materials J 6.9.62. D 25 4SI. (T. 15; M.)

Surprisingly, there has now been a composite material web for heat-bonding molded parts made of elastic, non-melting ones Substances found with the help of current heat, which is characterized in that it consists of a whole or in part with thermoplastic or with essentially thermoplastic Polymer mixtures containing plastics coated, which do not melt at the working temperatures, metallic conductor system.

It was by no means foreseeable that such composite materials or. Adhesive films with an internal heating system have been extremely successful even with purely thermoplastic adhesive resins or with polymer mixtures essentially containing thermoplastics, with processing similar to that of the adhesives made from thermosetting resins known since then, and with a number of special advantages New areas of application opened up for products. Rather, it was to be expected that the high melt viscosity in comparison with the thermosetting resins and the wide melting range of most thermoplastics would prove to be very unfavorable for use within the meaning of the invention. In particular, the high melt viscosity raised concerns about insufficient wetting of the parts and materials to be bonded. Furthermore, long heating times, combined with the risk of local overheating of the foils, had to be expected, as well as insufficient penetration of the thermoplastics into the materials. iiThe person skilled in the art must therefore fear poorly adhering bonds _; ten, as well as the need to have to use very high pressures to connect the parts to be joined.

It was therefore particularly surprising when only now, after long knowledge of thermoplastics and their properties, It has been found that excellent adhesive bonds, which can be carried out briefly, between elastic, not melting moldings of various origins and

SHK ² iJ ?, ⁵⁰⁶⁹⁷ ·, ^Deutsd > ^c Gold- und Silbcr-SchcideansMlt formerly Roesslcr

-un MT "ill ^Verbu " d ^ terialh., hn rumdcbverklcben from Formteil ™

Composition can be achieved when looking at the said electrical Conductor system for electricity B. by resistance heating generated, with this heats the plastics causing the adhesion and after the end of the electricity heat generation, the adhesion concludes. In particular, it was surprising that both dense and porous materials are well wetted. this is astonishing because, in contrast to the adhesive films described in the prior art, made of thermosetting agents, wherein the wetting is effected by the low molecular weight initial melt high molecular weight material is already present at the beginning of the gluing process and in the thermoplastic material during the gluing process Plastic, no molecular enlargements occur.

Further advantages of the coating according to the innovation with plastics metallic conductor systems include: The necessary pressure when performing the bond is surprising because of the good network properties very low and in very many

ρ Pallen pressures of 2 to 5 kg per cm are sufficient. You get

\ ,; bonds with surprisingly high strengths, which in

B are orders of magnitude that would otherwise only be possible with good

j be achieved telklebern I. The products according to the invention

; | however, they are advantageously more versatile and can be used by many

I Applications can be used more easily, quickly and efficiently

: t ■ ·

! as adhesives that are applied in solution and when they are

ρ use of multiple applications, flash-off times, long pressing times, etc.

I are necessary. They can also be used because of their high flexibility

f lixät in contrast to the thermosetting foils known since then ■ I *
■ | even roll up tightly, can be cut easily without chipping,

f, punch and the like and are insensitive to impact. Another

j Advantage of the plastic-coated Lei-I according to the invention system is that adhesive joints with constant thickness and therefore

I can easily produce a uniform binding force. Because of the

I also offer excellent flexibility when bonding uneven surfaces

I parts to be joined. Even parts with different thicknesses and

1 in itself "different composition can be easily

Glue I teres well.
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Ill ² CL ^19/0697 - ^ mascara gold and bilbcr-Schcideanstalt formerly Roessler 1 Π Irankfurt CC / M. I composite material web ~ '·' * · for the I white-gluing of molded parts made of elastic, non-melting materials 6.9.62. D 25 481. (T. 15-M)

Finally, as already indicated, a particularly important advantage appears when the connected parts of a are subjected to changing, permanent stresses in the elastic range α, d. H. with continuous use, like them is common in practical use in many cases.

As thermoplastics with which the conductor system is coated a large number of homopolymers and copolymers are suitable, if necessary in combination with plasticizers, stabilizers, Adhesion agents, anti-aging agents active and not excessive quantities, d. H. up to about 50 # based on the thermoplastics. Suitable homopolymers or copolymers are preferably those which are at temperatures between Reach or melt clearly around 50 and around 250 ° C without to decompose substantially and which in this state have sufficient network properties even at low contact pressure. I.

These include B. polyamides and mixed polyamides, v / ie polya-

. i mide from lactams and from a wide variety of di- and polycar- |

acidic acids and di- and polyamines, furthermore vinyl polymers j such as polyvinyl halides, polyvinylidene halides, polyvinyl esters j and ethers, which if necessary with the help of added chemical reactants in the crosslinked or partially crosslinked state are transferred, as well as copolymers or polymer mixtures containing vinyl monomers, in particular polyvinyl chloride, Copolymers containing polyvinyl acetate and vinyl chloride or vinylidene chloride and vinyl acetate, and also those Thermoplastics that can be converted into elastomers by vulcanization, such as natural and synthetic rubber, chloroprene polymers, polyisobutylene, Polybutadiene, copolymers of acrylonitrile and but .:: lien, acrylonitrile and chloroprene, acrylonitrile and styrene, Buxsa and styrene, ethylene and propylene, etc., and finally ternary copolymers such. B. made of acrylonitrile, butadiene and styrene, etc. Polyolefins can also be used for certain purposes like polyethylene and polypropylene, also linear or

; bilber-Scheideanstalt formerly Roessler 1 10 CC

j Irankturt / M. I composite web ~ '·' * ·

ί i To hot-glue molded parts

\ elastic, non-melting fabrics

j 6. 9. 62. D 25 481. (T. 15; M.)

weakly cross-linked polyester, preferably in combination with the thermoplastics mentioned above. It can So be of particular advantage if mixtures of the plastics listed are used, because the melting temperatures or creation areas through appropriate blending of the polymers or copolymers, 'as well as through the I can be influenced in the following additives, I so that ζ. B. the temperature sensitivity of the materials to be bonded can be taken into account.

As a bonding agent, known from the Kl eberhers natural or synthetic resins, such as. B. phenolic, aldehyde resins, including the so-called alkylphenol resins, ketone aldehyde, Coumarone or modified rosin resins are used. In a similar way Curable resins can also act, such as B. phenolic, Urea, melamine or epoxy resins, preferably in minor amounts up to about 50 #, based on the thermoplastic Plastics, co-use.

It can also be advantageous to use stabilizers and anti-aging agents known from the rubber or plastics industry to use with. The same applies to known ones

: | The known polymer or monomer can be used as plasticizers.

iji I plasticizers can be used, e.g. B. simple ester plasticizers

w like phthalates, aliphatic. Dicarboxylic and fatty acid esters,; ^

H ι also phosphates, citric acid esters, oxycarboxylic acid esters "I

And the like., Also polyester plasticizers, the z. B. from Di- j

or polycarboxylic acids and polyhydric alcohols by conj

Densation are produced, epoxidized oils, and also

M ·; ■ low molecular weight copolymers including butadiene and acrylonitrile, polymeric styrene derivatives, and also alcohols such as ethylene glycol, glycerine, hydroabietyl alcohol, sorbitol, halogenated,

M I nitrated and pure hydrocarbons, polymer plasticizers, I such as polyvinyl methyl and ethyl ethers, etc.

J22i, 2. 1950 697. German gold and silver separator formerly Roessler, 1 IT CC Frankfurt / M. I composite material web '·' * · ^D0 for hot gluing of molded parts made of elastic, non-melting materials. 9/6/62. D 25 4Sl. (T. 15; M.)

■■ active or inactive fillers such as precipitated or pyrogenic Obtained oxides of metals or metalloids silicon, aluminum, zircon, iron and the like. Furthermore, soot, chalk, kaolin, etc;

The metallic conductor system is advantageously between two films or in a film made of thermoplastics or essentially containing thermoplastics Embedded polymer mixtures. It can consist of a wire mesh or wire mesh, which in whole or in part is coated. The term "wire" should also include all flat or ribbon-like structures, since these with good

or the same success as wires can be used. A>

Another embodiment of the metallic conductor system consists of 3 parallel wires or strips, which may be connected by transverse non-conductors are connected, which fix these conductors.

The ladder system used to generate heat can thus be used in be designed in very different ways. For example, parallel wires can only be used in the longitudinal direction arranged and inserted in the transverse direction at suitable intervals contact wires, strips or strips, which. the power supply via appropriate terminals or other exclusions enable. A wire mesh can also be used as a conductor system be used that on both sides of the film, at least but partially protrudes, protrudes or is exposed so that contacts can be created for V / iderstanäieizung.

Ferrer can serve as a conductor system a fabric which contains conductive wire in the warp or weft direction and accordingly in the weft or warp direction non-metallic threads, z. B. natural or artificial fibers, threads or yarns, 'including glass or asbestos fibers. The wires that form the conductor system can, if necessary, be particularly dense

| 22i, 2. 1950697. German gold and j Silber-Scheideanstalt formerly Roessler,

Frankfurt / M. I composite material web '· j for hot-gluing molded parts

elastic, non-melting fabrics

9/6/62. D 25 481. (T. 15; M.)

Position or mesh size, only to be encased by the thermoplastics, so that in the real sense ■ it is no longer possible to speak of a film formation. So, it is possible to do that with the appropriate plastic ! already coated wires or tapes to one of the tagged above To unite conductor systems and to use them for gluing.

'' The wires used as heating conductors exist on the one hand ? from the known alloys that are generally used for resistance wires, z. B. from the alloys with | the names Konstantan, Nikelin, Niresist, Manganin, Kanthai, ! Nickel silver and degl., Also made of chrome-nickel alloys etc., On the other hand, they are electrical conductors in the same or similar form, such as Wires from z. B. aluminum, ! Copper, silver, iron and their alloys.

For heating the with the thermoplastic plastics ·! Or. Conductor system coated with polymer mixtures essentially containing thermoplastic plastic! by means of current heat, this is expediently dimensioned in such a way that! by applying a low-voltage voltage, an output of 20 to 20, preferably 0.5 to 10 watts per cm of the surface area is generated. can be. The necessary wattage depends, among other things, on the amount of heat that is necessary to use the thermoplastics specifically used for the particular material to be bonded; Iterially transferred to the adhesive state. To use it! 'Wire systems with wire-low as possible to strengthen or reinforce belt ⁵ with a cross section of 10 mm to 0.2 Now, vorizugsweise of 10 ^"p to 0.1 mm, and with an optimal spacing of the wires or Ribbons, which in the case of wire braids or of essentially parallel laid scrims I is 0.1 to 5 mm, preferably 0.5 to 3 mm, and with 1 total thickness of the product according to the invention from 0.05 to 1-3 mm , preferably 0.1 to 1 mm.. ·

22i, 2. 1950697. German Gold and Silver Schcideanstalt formerly Roessler, 1 10 CC Frankfurt / M. I composite material web '·' * ■■ ⁰⁰ year hot-glueing of molded parts; elastic, non-melting fabrics. 9/6/62. D 25 481. (T. 15; M.)

I The ladder system can also be used for some purposes l consist of a perforated metal foil, which with a 1

I of the plastics or plastic equipment mentioned on one or both sides is coated. · '

The coated ladder systems according to the invention can be produced, for example, by laminating two plastic foils I produced by extrusion or by painting with an internal ladder system in such a way that the two foils are guided from above and below via rollers against the accompanying ladder system and optionally with the aid of solvents i by partially dissolving and / or by supplying heat from the outside via the I laminating or from the inside through the Leitersy; - \ stern under pressure are connected to each other. The product according to the invention can, however, also be produced by immersing the conductor system one or more times in a thermoplastic melt or solution.

- 10

J22i, 2. 1950697. German gold and silver separator formerly Roessler, _ Λ IO cc I I-rankfurt / M. I composite web ·. '* · For the hot bonding of molded parts made of elastic, non-melting materials. J6.9.62. D25481. (T. 15; M.)

There are also advantages associated with the simpler manufacture and use of thermoplastic materials for some purposes Adhesive resin mixtures covered metallic conductor systems, with ' where a conductor system of the type described is applied to a single film and either by the action of heat and / or the action of solvents is fixed or melted or melted. When using such foils, the resin melts around the conductor Completely. This type of production saves the production of one of the two foils to be laminated. This variant is mainly used for easily and very completely melting thermoplastic adhesive resins, for example in the polyamides.

The coated conductor systems according to the invention are suitable for bonding both flexible and rigid ones Materials with absorbent, porous or dense, non-absorbent or impenetrable structure against similar or different fabrics. As a rule, the strengths of the adhesive joints are so excellent that they are tested on strength, material breakage is more likely than the tearing of the bond. In addition, there are very good thermal properties. strength values that z. B. when bonding with with polyamide coated conductor systems make up a multiple of what can be achieved with solvent-based adhesives. Also can be Use of the invention; Produce such uniformity to achieve 'gluing' while at the same time saving a considerable amount of working time, which has not been possible so far with other methods were possible. '

ν ■ ■ '. ■■. ■■. ■

A field of application for the products according to the invention is primarily the plastics processing industry, but also the shoe industry to call. They can also be used with advantage wherever uniform, flat paneling high strength with simple and quick production Connection are required. V

- 11 -

IS ί

122 ». 2. 1950697. German gold and

; Silver separator formerly Roessler 1 Π C C

ί Frankfurt / M. I composite sheet " ¹ x ¹ * x ⁰⁰

I for the hot bonding of molded parts

[elastic, non-melting fabrics

[9/6/62. D 25 4SI. (T. 15; M.)

Example 1; ''"'''

Zv / ei PoT'-i-aaidiolien (thickness 0.15 µm each) from a mixed condensate * of two starting products forming saper polyamides _β plasticized 'with the ester of an aromatic Oy.ycarboxylic acid (SUHlOHYL R from Kalle & Co., Wiesbaden) are as follows with a.; \ v. ladder system consisting of resistance wires running in parallel x (diameter 0.08 cm; Y / iderstar.d a 1 m long wire a about λ 100 oha; a distance of the wires = 1.5 from each other ) consists, concealed: _: '

The wire system runs from a guide onto a horizontal bench. In front of this bench, a film runs underneath the wire system, a _; second above it to "On the bench, the composite film is produced by fusing it with the air" At the end of the ·. Bank Kaun the film composite with internal, fixierton paralle _·: len wires also be performed by SWEi Prcßwalsen "Just before the fusing together transversely oeit- to the web direction * lent projecting contact strip AU3 aluminum inserted» dienes strips have a distance of 15 meters from each other " In the present case, the adhesive film is 3 cm wide. The adhesive film V described is then made of two roughened pieces of pit-tanned floor leather and>. Mast box (area 3 x U cm) logged and pressed against 6 kg / cm * The total pressure was 45 seconds after a voltage was applied; 15 volts for 25 seconds resulted in a bond of ^r a peel strength such that at about 5 kg / cm for a Pril- C caught by DIH 53274 leather llaterialbruch enters "Diö Pr-N üfung was etv / a performed 30 minutes after switching off the current · V

3eAgame 2 : ".

Two films with a thickness of 0.12 mm each, consisting of a mixture of 100 parts by weight of a copolymer of butadiene and acrylonitrile with an acrylonitrile content of 23 ·; ί and a Defo hardness of 1800 _f 40 parts by weight of a resinous: _v

-12-

i «: Silver Schcideanstalt formerly Roessier, _ 1 10 CC

IJ ■ Frankfurt / M. I composite material web · - I * - DD M j for hot sealing from molded parts

M. 'elastic, non-melting fabrics.

β 16.9.62. D 25 4SI. (T. 15; M.),.

Ιί - 12 - - - '

fGlycerinesters of colophony, 30 parts by weight cyclohexanone-formaldehyde resin, 10 parts by weight of kaolin and 2.5 parts by weight pyrogen-derived silica having an S _c hüttgewicht of about 40 g / liter and a surface area of 300 m ² / g, as described in Example 1 , .but laminated by solvent activation with a galvanized iron wire mesh (mesh size 16 per inch and a wire thickness of 0.1 mm) so that the wire mesh protrudes slightly on both sides. The width of the film is 15 cm. From this, 3 cm wide strips are cut transversely to the web and, after the clamps have been installed, by means of electrical heat at a power of 5.5 watts / cm ^{2 of} the fabric or the area that forms the wire mesh

! covers, as in example 1, the following strips are glued:

.. So-called "Nora rubber ^11" (from Freudenberg) roughened, 3 mm thick, roughened against "Nora rubber", surface as in Example 1, heating time 20 seconds, pressure 3.4 kg / cm peel strength according to DIN 53274 6.0 kg / cm.

:. Nora gum of the same type and shape as above against roughened masfbox. Sonata data as above, peel strength according to DIN 53274 5 _t 7 kg / cm. The bond was in both ?;

ϊ Cases checked after 24 hours.

As a comparison to the peel strength obtained in the hot-melt adhesive process, adhesive bonds with the same adhesive approach were also produced from solution. The solvent of the adhesive sawn '''stent from methyl acetate''' and vinegar Eater in the ratio 1: 1, the dry content is .20. '. #. The strips were brushed in and, after a flash-off time of 20 minutes, were pressed at 10 kg / cm for 60 seconds. After 48 hours the following reed strengths were obtained according to DIN 53274:

Nora gum, roughened, nora gum, roughened 2.0 kg / cm, nora gum roughened against mast box roughened 2.4 kg / cm.

Silber-Scheideanstalt formerly Rosssler, _ 1 10 CC FrankfurtnM. I composite web '· ^U - ^DD

, for hot sealing of molded parts elastic, non-melting fabrics.

■ 6. 9. 62. D 25 4SI. (T, 15; M.)

Example 3:

An adhesive film of the type as in Example 2 with a length of 15 cm and a width of 2 cm will be between two 0.5 mm strong, 14 cm wide and 12 cm long polyvinyl chloride plates are placed so that the adhesive strip is straight from the 2 cm wide Overlap of the two panels is covered. The composite is pressed at 5 kg / cm and the sides protrude slightly Wire ends clamps applied. Electricity heats the fabric or the surface at 6 watts / cm for 20 seconds. which covers the wire mesh, heated. After switching off the current, the pressing process is only set for 20 seconds. To For 3 hours, the shear strength is measured on 3 cm wide test strips at a feed rate on the testing machine of 100 mm / mimetres measured. The result is 41 kg / cw. Bonding of the same materials, but if the adhesive mix is out of solution is painted on, resulted after a period of 20 minutes

grooves and then a pressure of 10 kg / cm for 60 seconds in the test after 48 hours after the end of the gluing process

a shear strength of 9 kg / cm.

Example 4:

An adhesive sheet consisting of two with one. Polyethylene film laminated with a conductor system (thickness 0.2 mm each) is produced analogously to that described in Example 1. The bonding process is carried out analogously to Example 3 with the same _; ! ^ Dimensions: Two polyethylene plates are glued overlapping, the heating time is 10 seconds and the heating power i3t 7 watts / cm of the surface of the adhesive film. The shear strength test was carried out in the same way as in Example 3. At 56 kg / cm *, material breakage occurred because the bond could not be separated.

14th

Claims (8)

22i, 2. 1450 697. Deutsche Gold- und Süber-Scheideanstalt formerly Rocsslcr 1 10 CC I'rankfurt / M. I composite nuterial membrane '·' * · D ° ium cladding of molded parts made of elastic, non-melting materials. 14 9/6/62. D 25 4SI. (T. 15; M.) Protection claims' 1. Composite web sum of heat gluing from Pormtoilen elastic, non-melting materials with the help of Stromv / ärme, characterized in that it consists of a wholly or partially thermoplastic: plastic or wit essentially "containing thermoplastics Coated with polymer mixtures, metallic current conductor system that does not melt at working temperatures. 2. Composite material web according to claim 1, characterized in that that the metallic Stromleitcraystem between two foils or at least partially in a film made of thermoplastics or essentially thermoplastics containing polymer mixtures is embedded. 3. Vqrbundmaterialbahn according to Ansbach rüchen 1 and 2, gekennzeich'net in that it anz of a ^ or partially consists coated wire mesh or wire mesh. 4. composite material web according to claims 1 and 2, characterized in that that the metallic conductor system consists of parallel wires, which are optionally connected by cross-running, dio wires fixing, non-conducting conductors are connected. 5. composite web of material according to claims 1 and 2, characterized in that the metallic conductor system consists of an aluminum foil of a maximum of 0.2. mm thickness. 15th 22i, 2. 1450 697,! Kutsche Gold- und Silber-Scheideanstalt formerly Koesslcr. _ Λ Ir.inkfurt / .M. I composite material for I adhesive bonding of molded parts made of elastic, non-melting materials. 9/6/62. D 25 4SI. (M 15; M.) 6. composite material web according to claims 1 to 5, characterized in that that the metallic conductor system in cecigneten Distances electricity supply lines in the form of the current ßut conductive Binders or wires that are at least partially or lie free. 7. composite material web according to claims 1 bic 6, characterized in that that the metallic conductor system is partially exposed or protrudes. 8. Verbur-: material web according to claims 1 to 7, characterized in that that the coating of the same apart from the thermoplastics non-thermoplastic adhesive resins, Fillers, dyes, plasticizers, stabilizers and / or non-hardenable synthetic resins, the latter in not predominant Kcr.gen, contains. A.
July 21, 1966