DE1779801A1 - Fiber-reinforced plastic pipe with inner lining and a method for producing such pipes - Google Patents

Description

cream, the Zl. oepüember 1 ^z jbü

e Netherlands

Far; ervers täri; tc-s IDmaistoffx'nhr mii Iiinonvcx * i: l <-; ! .duiiff .su.vie Procedure for riersiol'Lunr djr'.irti ^ er .lolirs.

The iri'inaung! "Eaiehr ^ i Mif af-. Iuery ^ ratariibeu art stoxf pipe made of thermohardening material: /, Kuu>. taar ^ ui t a ^ r ^ ιΐ3 taeraj tisohea plastic or uui ^ ii. best ^ iif; '. doi' insidev ^ .-. '.' iiiei

'L'-ivavtige Hohre whose interior lining _.'. _L sainer thtri;, o- "o.laatic film ζ.3. Made of polyvinyl chloride> i. <- ■: rolyäthyi ^ n odoa? Ol ™.; I! .-. T:.,. 'Lar: bfjst ^ ht are ε: ι -.ich u ^ Lv / ant.Jei'l · · ^^ ;; üohr ^; i Laben

- "'- ^ I d'l'l · ^{Λ '.!} Ύ ^{·"': i} <Γ "11 ^r ''-tr" tr ¹ 't

^ οε i;.:, especially lore through

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liohre is significantly reduced, increased chemical resistance against alkalis and acids and finally a considerable amount in the 'conveying of suspensions through these lines Improvement of the wear hardness can be recorded. Both the above-mentioned materials and rubber is also used,

JJin such an ear is burdened with the! .Long 1 that mostly insufficient adhesion between the inner lining and the fiber-reinforced plastic material in the form of a thermosetting Synthetic resin occurs, making these pipes often unusable in practice are.

The invention is based on these disadvantages to ■ ■ * on both sides by a fiber-reinforced plastic pipe of the above type is created, characterized in that the inner lining on the side facing the thermosetting resin with the Irmunvorklenung firmly connected, finely divided anchoring material wearing.

Ground polyvinyl chloride, polyethylene or polypropylene are advantageously used as anchoring material

hen from 1 - 80 mm ³ application, _r;

Such an anchoring material has the advantage that it ■ protruding parts when connected to the inner lining or forms a type of V / iderhaken that can serve as an anchor for thex-CiOhärtenda synthetic resin.

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_ 7th _M.

Zinc particles of this size are also particularly suitable by spraying molten zinc.

even
The iürfindung- relates to a method of manufacture

a fiber-reinforced plastic tube made from a thermosetting Synthetic resin with inner lining, which method is characterized in that on the inner lining on the the thermosetting The side facing the synthetic resin is firmly connected to the interior cladding finely distributed anchoring material is provided.

Advantageously, an anchoring material is applied to the thermoplastic plastic cladding, e.g. foils, by blowing of the anchoring material on the at least superficial in soft made state brought thermoplastic plastic lining provided in such a way that it is firmly with the thermoplastic Plastic cladding connects.

The invention is illustrated in section through an exemplary embodiment of the fiber-reinforced plastic pipe according to the invention illustrative drawing explained »

In the drawing, a fiber-reinforced plastic pipe 1 is shown which consists of a fiber winding 2, a thermosetting— the synthetic resin 3 t one running in the opposite direction ■ Winding of reinforcing fibers 4 and one thermosetting on it Resin layer 3 t or 8 composed. On the inner side, this tube has an inner wrapping made of polyethylene foil.

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■ clothes 5 on. On the outer side of this thermoplastic plastic film 5, anchoring material in the form of a ground thermoplastic plastic is placed. For example, particles 6 made of polyvinyl chloride of 2 mm diameter are attached. This is done by blowing the anchoring material onto the brought by heating to for example, film material 15O ⁰ C for polyethylene in softened condition. As a result of the softened state of the film material, the anchoring material is firmly connected to the thermoplastic material. Since the anchoring material forms a type of barb, the thermosetting synthetic resin to be applied will bond intimately with the thermoplastic inner lining. It is also possible, by means of the heated air -warmer anchoring particles to spray onto the film material (up to 140 ⁰ C).

Between the two synthetic resin layers reinforced by fibers there is also advantageously a foam layer 7 » This also contributes to the reinforcement and stiffening of the Plastic pipe.

It is clear that instead of finely ground thermoplastic material, fibrous material is also attached as anchoring can be*

Instead of the thermoplastic inner lining, a lining made of rubber can also be used, both in the form of a film and can also be used as a pipe for the inner cladding «

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The tubes according to the invention can both by means of a dome as well as by centrifugal processes «

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Claims (8)

EXPECTATIONS 1 »Fiber-reinforced plastic pipe made from thermosetting synthetic resin with an inner lining made of thermoplastic plastic or rubber, characterized in that the inner lining on the side facing the thermosetting synthetic resin, a finely divided anchoring material firmly connected to the inner lining wearing. 2. Fiber-reinforced plastic pipe according to claim 1, characterized in that the anchoring material consists of crushed, thermoplastic plastic, e.g. ground polyethylene, polypropylene or polyvinyl chloride or fibrous particles of these _ 3 big Material and the particles are 1-80 mm '. 3. Fiber-reinforced plastic pipe according to claims I or 2, characterized in that the same two reinforced with fibers has thermosetting plastic layers between which Foam is located. 4 »Process for the production of a fiber-reinforced plastic pipe which is equipped with an inner lining made of thermoplastic or rubber, characterized in that that on the inner lining on the the thermosetting resin facing side an anchoring material firmly connected to the inner lining is provided, after which the Reinforcing fibers and the thermosetting resin are attached and curing takes place. 1098 38 / U1 7 _? 5 »The method according to .Anspruch 4 $ characterized in that an anchoring material on the thermoplastic plastic cladding, z. 5. Foils, by blowing the anchoring material onto the at least thermoplastic materials that have been superficially softened Plastic cladding is provided in such a way that it is firmly connected to the thermoplastic plastic cladding » 6. The method according to claims 4 or 5 »£ adurch_gekiziert that the anchoring material consists of crushed thermoplastic material, for example ground polyvinyl chloride, polyethylene or polypropylene or fibrous particles of this material and the particles are 1-80 mm ³ /. 7. The method according to claims 4 to 6, characterized ze ichn et j, that after the application of a first winding of reinforcing fibers and the synthetic resin, a foam layer is applied, after which a Two winding made of reinforcing fibers and a thermosetting synthetic resin is provided, 8. Thermoplastic pipe or rubber pipe or foil provided with a suitable anchoring material for use in the process according to claims 4 to 7 For the applicant: Applicant:
Wavin II. V. Zwolle the Netherlands 109838 / U17 BATH ORIGINAL Blank e