GB1561430A - Process for the adhesive bonding of a fibrous material to a polyvinylidene fluoride substrate - Google Patents

Process for the adhesive bonding of a fibrous material to a polyvinylidene fluoride substrate Download PDF

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Publication number
GB1561430A
GB1561430A GB50325/76A GB5032576A GB1561430A GB 1561430 A GB1561430 A GB 1561430A GB 50325/76 A GB50325/76 A GB 50325/76A GB 5032576 A GB5032576 A GB 5032576A GB 1561430 A GB1561430 A GB 1561430A
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Prior art keywords
pvf2
polyvinylidene fluoride
adhesive
glass
glass fibre
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Expired
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GB50325/76A
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Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
Original Assignee
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
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Publication of GB1561430A publication Critical patent/GB1561430A/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/003—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised by the matrix material, e.g. material composition or physical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/12—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
    • C08J5/124—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives using adhesives based on a macromolecular component
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0223—Vinyl resin fibres
    • B32B2262/0238—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2327/16—Homopolymers or copolymers of vinylidene fluoride

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Reinforced Plastic Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Description

(54) PROCESS FOR THE ADHESIVE BONDING OF A FIBROUS MATERIAL TO A POLYVINYLIDENE FLUORIDE SUBSTRATE (71) We, PRODUITS CHEMlQuEs UGINE KUHLMANN, a French Body Corporate, of 25 Boulevard de l'Amiral Bruix, .75116 Paris, France, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: The present invention relates to a process for the adhesive bonding of a fibrous material to a polyvinylidene fluoride (PVF.,) substrate.
In this specification, the term "fibrous material" is used to mean any fibrous material, including woven fabrics, nonwoven fabrics or mats, and encompasses material made from natural, artificial, or synthetic fibres.
The preferred fibres are glass fibres and asbestos fibres, because of their thermal properties.
In the plastics hollow ware industry, cladding is a frequent operation. In the untreated state PVF2 is difficult to bond to a metallic surface, and, unless the PVF. is specially treated, resins in particular polyesters will not adhere to the PVF2.
It has therefore been found necessary to adhere a fibrous intermediate ]ayer to the PVF2, which layer will then permit the resultant PVF2/fibrous material composite to be adhesively bonded to a metal surface or to be clad with, for example, one or more further layers of a polyester andjor glass fibre.
It is known for a glass fibre mat or woven fabric to be calendered with a sheet of PVF passing out of an extruder. Some of the glass fibres partly penetrate into the PVF, and are physically imprisoned in the mass of the polymer. However, unless the glass fibres are brought to a temperature near the melting point of PVF.2, the polymer is rapidly cooled when it contacts the glass, and the bond between the glass and the PVF2 is only superficial.PVF2 alone can be thermoformed easily, but even where adequate physical attachment between the PFV and the glass fibre mat or fabric has been achieved, such attachment being indispensable if subsequent durable adhesive bonding or cladding is to be obtained, subsequent thermoforming of the resultant composite material consisting of the sheet of PVF and the glass fibre mat or fabric in the manner required for the plastics hollow ware industry is difficult to achieve.
An additional disadvantage occurs when composite laminates of PVF2 and glass fabric are to be joined by welding. Before the welding operation can be performed it is necessary to bare the PVF2 surface on each side of that portion which is to be welded, that is to say the glass fabric must be removed from the few millimetres of the sheet which is to be welded. After the welding operation has been performed, the welded zones no longer have a layer of glass fabric which will act as a keying surface and consequently during the subsequent cladding operation the polyester coating will not adhere continuously.
Thus, considering a vessel of PVF2 ex tenlally clad with polyester, for example, if the weld lines of the PVF2 sheets correspond to lines of non-adhesion of the outer polyester covering, detachment or fracture of the outer covering will begin from these lines as a result of the effect of thermal changes and because of the difference in the coefficients of expansion of PVF2 and the polyester, whereas if there is perfect continuity of adhesion, no detachment or frac- ture will take place.
According to the present invention there is provided an improved process for bonding a fibrous material to PVF2.
According to the present invention, there is provided a process for the adhesive bonding of a fibrous material to a polyvinylidene fluoride substrate, which process comprises interposing between the surface of the fibrous material and the surface of the polyvinylidene fluoride substrate which are to be bonded together an adhesive which includes a homo- or co-polymer of vinylidene fluoride as a constituent thereof, forming an assembly of the fibrous material and the polyvinylidene substrate with the surfaces which are to be joined in contact, and heating the assembly to a temperature of from 1200C to 300"C.
The process of the invention enables an improved joint between a fibrous material and any PVF2 surface, such as a plate, sheet, tube, a compression or injection moulding or thermoformed surface, to be obtained.
The PVFO-based adhesive may be in any form, such as a powder, dispersion, or solution.
One of the preferred adhesives is a solution of PVF2 in a solvent. Dimethyl formamide, dimethyl acetamide, tetrahydrofuran, dimethyl sulphoxide, cyclohexanone, hexamethylphosphoramide and tetramethylurea, or mixtures thereof are examples of suitable such solvents. The adhesive is preferably prepared by dissolving, preferably at a temperature of from 400C to 1800C, PVTh2, or a copolymer of vinylidene fluoride comprising at least 80% by weight of vinylidene fluoride, or a mixture of at least 50% by weight of PVF2 and at most 50% by weight of a polymer which is compatible with PVF2 (e.g. polymethyl polymethacrylate) in a solvent or a mixture of solvents. The concentration by weight of dry material in the solution is generally lower than 50%.
Another preferred adhesive is a dispersion of PVF2 in a non-solvent medium, preferably an aqueous medium. When an aqueous dispersion is used, it is possible to employ any concentration of PVF2 or of a vinylidene fluoride copolymer comprising at least 80% by weight of polyvinylidene fluoride.
However, the concentration of PVF2 or PVF2 copolymer is preferably lower than 75% by weight of the dispersion.
In the process of the invention, the PVF substrate and/or the fibrous material which are to be bonded together are/or is coated or impregnated with the PVF2 adhesive in known manner, for example by means of a roller, a coating knife, a brush, by spraying or by immersion. The parts to be bonded together are then brought into contact and heated at a temperature of from 120 to 3000C by any known means, such as hot rolling. or stoving. The contact time depends on the temperature applied, but it may vary from a few seconds to several hours. Before the parts to be bonded together are brought into contact it may in certain cases be advantageous for the water or solvents in the PVF2 adhesive means to be removed by heating.It may also be advantageous when bringing into contact the parts which are to be bonded together to heat the surfaces which are to be joined, for example by treating them with hot air or infrared radiation at a temperature of from 1800C to 300"C.
The invention will now be illustrated with reference to the following Examples.
EXAMPLE 1 A 3 mm sheet of PVF2 is extruded through a die, brought to a temperature of 2500C, and rolled between the cylinders of a calender, which are heated to 1300C. A glass fibre mat previously impregnated by immersion in a 33% aqueous dispersion of PVF2 and dried for 5 minutes in a furnace at 1 800C, is unwound under a bank of infrared radiators and brought into contact with the soft sheet of PVF coming from the extruder, immediately at the inlet of the calender. After cooling, a laminate consisting of the PVF2 sheet having the glass mat adhered thereto is obtained. A polyester laminate is then formed by pouring a polyester over the glass fibre mat which is adhered to the PVF2 and applying successive layers of mat and polyester.
After hardening a polyester laminate is obtained which adheres well to the PVF2.
EXAMPLE 2 A glass fibre fabric is coated with a 65% aqueous dispersion of dry PVF2 powder, with the aid of a coating knife. After heating for 10 minutes at 240"C, a glass fibre fabric coated on one face with a film of dry PVF2 is obtained.
The fabric is then wound helically on a tube of PVF. Hot air at 280"C--3000C is blown over the assembly so as to cause the surface of the PVF2 tube and the PVF2 film coating the glass fibre fabric to melt while the tube and the fabric are brought together, so that the coated fabric is welded on the tube. A tube having extremely good resistance to bursting is thus obtained. The tube may also be clad with a polyester in order to reinforce it still further.
EXAMPLE 3 A curved tank end produced by thermoforming a 2 mm sheet of PVF2 is coated with a solution obtained by dissolving 20% of PVF2. at 600C in dimethyl acetamide.
The coating is performed at 200C using a brush. A glass fibre mat is applied manually so as to match the shape of the tank end. The assembly is then left for 20 minutes at 1500C in an oven. After cooling, the glass fibre adhering to the PVF2 is clad with a polyester. The composite polyester/ glass fibre cladding adheres very well to the PVF2.
EXAMPLE 4 A curved tank end produced by the thermoforming of a 2 mm sheet of PVF2 is coated with a solution obtained by dissolv ing 20% of PVF2 at 600C in the dimethyl acetamide. The coating is performed at 60 C using a brush. Glass fibres of a length of about 6 mm are sprayed on to the PVF2coated tank end with a spray gun and compacted with the aid of a roller so that the fibrous covering matches the shape of the tank end. The resultant product is then left for 20 minutes at 150 C in an oven. After cooling, the glass fibre layer adhering to the PVF2 is clad with polyester. The composite polyester/glass fibre coating adheres very well to the PVF2.
EXMPLE 5 A tank is made by welding sheets of PVF2 rolled with glass fibre fabric. To build the tank, the areas of the sheets near the welds are first stripped of their glass fibre fabric.
A solution of PVF2, produced by dissolving 10% of PVF. at 600C in dimethyl sulphoxide is applied to these areas using a brush. The previously detached glass fabric is folded back into place, or better still a glass fibre mat is applied to these zones after application of adhesive. so that there is a continuous covering of glass fibres over the entire surface. Heating is effected with a hot air gun so that the surface of the PVF2 reaches a temperature of about 1 800C. After cooling it is found that the attached glass mat adheres excellently to the PVF2. Subsequently layers of polyester and glass fibre are adhered to the entire surface of the PVF2.
EXAMPLE 6 A PVF2 tube is reinforced as in Example 2, but the tube is first coated using a brush with a solution of PVF2 identical to that of Example 3, and then a strip of untreated glass fabric is helically wound onto the tube.
The assembly is then placed for 5 minutes in an oven heated to 1650C. The strip of glass fabric adheres very well to the tube, which is therefore reinforced.
EXAMPLE 7 A solution of 15 g of PVF2 in 85 g of dimethyl acetamide is prepared by dissolving the PVF2 in the acetamide at 90 C. 2 g of polymethyl methacrylate dissolved in 3 g of monomeric methyl methacrylate is added to the solution. The resultant adhesive is applied by brush to a PVF2 surface. After drying, a glass fibre fabric is applied manually to the PVF2 surface which has been treated with adhesive and the assembly is heated in an oven for 15 minutes at 160or.
The glass fibres adhere well to the PVF2.
EXAMPLE 8 A PVF2 film of a thickness of 20p is coated with a solution of the type described in Example 3. The coating is performed at 200C using a brush. A glass fibre mat is applied to the coated surface by hand. The assembly is then heated for 15 minutes at 140"C. After cooling, cladding with polyester is effected. The resulting complex laminate is shaped so as to obtain a corrugated sheet.
WHAT WE CLAIM IS:- 1. A process for the adhesive bonding of a fibrous material to a polyvinylidene fluoride substrate, which process comprises interposing between the surface of the fibrous material and the surface of the polyvinylidene fluoride substrate which are to be bonded together an adhesive which includes a homo- or co-polymer of vinylidene fluoride as a constituent thereof, forming an assembly of the fibrous material and the polyvinylidene substrate with the surfaces which are to be joined in contact, and heating the assembly to a temperature of from 1200C to 300 C.
2. A process according to Claim 1, wherein the adhesive is a solution of polyvinylidene fluoride or of a vinylidene fluoride copolymer containing at least 80two by weight of vinylidene fluoride in a solvent.
3. A process according to Claim 1, wherein the adhesive is a solution of a mixture of at least 50% by weight of polyvinylidene fluoride and at most 50% by weight of a polymer which is compatible with the polyvinylidene fluoride in a solvent.
4. A process according to Claim 3, wherein the polymer which is compatible wtih polyvinylidene fluoride is polymethyl methacrylate.
5. A process according to any one of Claims 2 to 5, wherein the solvent is dimethyl formamide, dimethyl acetamide, tetrahydrofuran, dimethyl sulphoxide, cyclohexanone, hexamethylphosphoramide, or tetramethylurea, or a mixture thereof.
6. A process according to any one of Claims 2 to 5, wherein the concentration of dry material in the solution is below 50% by weight.
7. A process according to Claim 1, wherein the adhesive is a dispersion of polyvinylidene fluoride or of a vinylidene fluoride copolymer containing at least 80% of polyvinylidene fluoride in a non-solvent medium.
8. A process according to Claim 7, wherein the non-solvent medium is an aqueous medium.
9. A process according to Claim 7 or Claim 8, wherein the concentration of dry material in the dispersion is lower than 75% by weight.
10. A process for the adhesive bonding of a fibrous material to a polyvinylidene fluoride substantially as hereinbefore des
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (12)

**WARNING** start of CLMS field may overlap end of DESC **. ing 20% of PVF2 at 600C in the dimethyl acetamide. The coating is performed at 60 C using a brush. Glass fibres of a length of about 6 mm are sprayed on to the PVF2coated tank end with a spray gun and compacted with the aid of a roller so that the fibrous covering matches the shape of the tank end. The resultant product is then left for 20 minutes at 150 C in an oven. After cooling, the glass fibre layer adhering to the PVF2 is clad with polyester. The composite polyester/glass fibre coating adheres very well to the PVF2. EXMPLE 5 A tank is made by welding sheets of PVF2 rolled with glass fibre fabric. To build the tank, the areas of the sheets near the welds are first stripped of their glass fibre fabric. A solution of PVF2, produced by dissolving 10% of PVF. at 600C in dimethyl sulphoxide is applied to these areas using a brush. The previously detached glass fabric is folded back into place, or better still a glass fibre mat is applied to these zones after application of adhesive. so that there is a continuous covering of glass fibres over the entire surface. Heating is effected with a hot air gun so that the surface of the PVF2 reaches a temperature of about 1 800C. After cooling it is found that the attached glass mat adheres excellently to the PVF2. Subsequently layers of polyester and glass fibre are adhered to the entire surface of the PVF2. EXAMPLE 6 A PVF2 tube is reinforced as in Example 2, but the tube is first coated using a brush with a solution of PVF2 identical to that of Example 3, and then a strip of untreated glass fabric is helically wound onto the tube. The assembly is then placed for 5 minutes in an oven heated to 1650C. The strip of glass fabric adheres very well to the tube, which is therefore reinforced. EXAMPLE 7 A solution of 15 g of PVF2 in 85 g of dimethyl acetamide is prepared by dissolving the PVF2 in the acetamide at 90 C. 2 g of polymethyl methacrylate dissolved in 3 g of monomeric methyl methacrylate is added to the solution. The resultant adhesive is applied by brush to a PVF2 surface. After drying, a glass fibre fabric is applied manually to the PVF2 surface which has been treated with adhesive and the assembly is heated in an oven for 15 minutes at 160or. The glass fibres adhere well to the PVF2. EXAMPLE 8 A PVF2 film of a thickness of 20p is coated with a solution of the type described in Example 3. The coating is performed at 200C using a brush. A glass fibre mat is applied to the coated surface by hand. The assembly is then heated for 15 minutes at 140"C. After cooling, cladding with polyester is effected. The resulting complex laminate is shaped so as to obtain a corrugated sheet. WHAT WE CLAIM IS:-
1. A process for the adhesive bonding of a fibrous material to a polyvinylidene fluoride substrate, which process comprises interposing between the surface of the fibrous material and the surface of the polyvinylidene fluoride substrate which are to be bonded together an adhesive which includes a homo- or co-polymer of vinylidene fluoride as a constituent thereof, forming an assembly of the fibrous material and the polyvinylidene substrate with the surfaces which are to be joined in contact, and heating the assembly to a temperature of from 1200C to 300 C.
2. A process according to Claim 1, wherein the adhesive is a solution of polyvinylidene fluoride or of a vinylidene fluoride copolymer containing at least 80two by weight of vinylidene fluoride in a solvent.
3. A process according to Claim 1, wherein the adhesive is a solution of a mixture of at least 50% by weight of polyvinylidene fluoride and at most 50% by weight of a polymer which is compatible with the polyvinylidene fluoride in a solvent.
4. A process according to Claim 3, wherein the polymer which is compatible wtih polyvinylidene fluoride is polymethyl methacrylate.
5. A process according to any one of Claims 2 to 5, wherein the solvent is dimethyl formamide, dimethyl acetamide, tetrahydrofuran, dimethyl sulphoxide, cyclohexanone, hexamethylphosphoramide, or tetramethylurea, or a mixture thereof.
6. A process according to any one of Claims 2 to 5, wherein the concentration of dry material in the solution is below 50% by weight.
7. A process according to Claim 1, wherein the adhesive is a dispersion of polyvinylidene fluoride or of a vinylidene fluoride copolymer containing at least 80% of polyvinylidene fluoride in a non-solvent medium.
8. A process according to Claim 7, wherein the non-solvent medium is an aqueous medium.
9. A process according to Claim 7 or Claim 8, wherein the concentration of dry material in the dispersion is lower than 75% by weight.
10. A process for the adhesive bonding of a fibrous material to a polyvinylidene fluoride substantially as hereinbefore des
cribed in any one of the foregoing Examples 1 to 8.
11. A polyvinylidene fluoride/fibrous material composite whenever prepared by a process as claimed in any one of the preceding claims.
12. A polyvinylidene fluoride/fibrous material composite substantially as hereinbefore described in any one of the foregoing Examples 1 to 8.
GB50325/76A 1975-12-09 1976-12-02 Process for the adhesive bonding of a fibrous material to a polyvinylidene fluoride substrate Expired GB1561430A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7537539A FR2334733A1 (en) 1975-12-09 1975-12-09 PROCESS FOR BONDING A FIBROUS SUBSTRATE ON VINYLIDENE POLYFLUORIDE

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GB1561430A true GB1561430A (en) 1980-02-20

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GB50325/76A Expired GB1561430A (en) 1975-12-09 1976-12-02 Process for the adhesive bonding of a fibrous material to a polyvinylidene fluoride substrate

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JP (1) JPS5269989A (en)
BE (1) BE848955A (en)
DE (1) DE2655597C3 (en)
FR (1) FR2334733A1 (en)
GB (1) GB1561430A (en)
IT (1) IT1125227B (en)
NL (1) NL7613644A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379198A (en) 1980-10-01 1983-04-05 Dynamit Nobel Aktiengesellschaft Composite material containing a thermoplastic synthetic resin layer
FR2633040A1 (en) * 1988-06-21 1989-12-22 Sigri Gmbh TUBES FOR THERMAL EXCHANGERS WITH TUBE BEAMS
GB2221651A (en) * 1988-08-13 1990-02-14 Smith & Nephew Tubular undercast padding
CN103635254A (en) * 2011-05-12 2014-03-12 新美乐远东有限公司 Method for producing a tube or semifinished tube and tube or semifinished tube for chemical apparatus construction

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Publication number Priority date Publication date Assignee Title
JPS54112943A (en) * 1978-02-23 1979-09-04 Kureha Chem Ind Co Ltd Adhesive for vinylidene fluoride resin and method of bonding
DE2818385C3 (en) * 1978-04-27 1984-08-23 Dynamit Nobel Ag, 5210 Troisdorf Method for producing a plate-shaped molded body made of polyvinylidene fluoride with a fiber fleece
FR2435348A1 (en) * 1978-05-11 1980-04-04 Solvay LAMINATE STRUCTURE COMPRISING A FLUORINATED POLYMER LAYER
JPS5589372A (en) * 1978-12-27 1980-07-05 Kureha Chem Ind Co Ltd Adhesive resin and its preparation
DK193284A (en) * 1983-04-13 1984-10-14 Chem Fab Corp REINFORCED FLUORPOLYMER COMPOSIT AND PROCEDURES FOR PREPARING THEREOF
CA1245540A (en) * 1984-05-24 1988-11-29 Safwat E. Tadros Process for laminating film to woven fabric
JPS6161849A (en) * 1984-09-04 1986-03-29 平岡織染株式会社 Incombustible sheet and manufacture thereof
FR2577564B1 (en) * 1985-02-14 1987-07-17 Atochem PROCESS FOR THE SURFACE TREATMENT OF VINYLIDENE POLYFLUORIDE FOR ADHESION TO A SUBSTRATE. MATERIAL OBTAINED FROM TREATED VINYLIDENE POLYFLUORIDE
DE3602800A1 (en) * 1985-06-07 1986-12-11 agru Alois Gruber + Sohn oHG, Bad Hall METHOD FOR THE SURFACE MODIFICATION OF MOLDED BODIES MADE OF POLYVINYLIDEN FLUORIDE
EP0577134B1 (en) 1992-07-01 1997-10-08 Simona Ag Laminate

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DE1264053B (en) * 1958-02-14 1968-03-21 Du Pont Process for the continuous production of molecularly oriented films from polyvinyl fluoride or polyvinylidene fluoride
NL260734A (en) * 1960-02-05

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379198A (en) 1980-10-01 1983-04-05 Dynamit Nobel Aktiengesellschaft Composite material containing a thermoplastic synthetic resin layer
FR2633040A1 (en) * 1988-06-21 1989-12-22 Sigri Gmbh TUBES FOR THERMAL EXCHANGERS WITH TUBE BEAMS
GB2220043A (en) * 1988-06-21 1989-12-28 Sigri Gmbh Tube for shell and tube heat exchanger
GB2221651A (en) * 1988-08-13 1990-02-14 Smith & Nephew Tubular undercast padding
GB2221651B (en) * 1988-08-13 1992-11-11 Smith & Nephew Tube materials
CN103635254A (en) * 2011-05-12 2014-03-12 新美乐远东有限公司 Method for producing a tube or semifinished tube and tube or semifinished tube for chemical apparatus construction
CN103635254B (en) * 2011-05-12 2016-08-17 新美乐远东有限公司 For manufacturing pipe or pipe process of semi-finished and the pipe constructed for chemical apparatuses or pipe semi-finished product
US9470355B2 (en) 2011-05-12 2016-10-18 Simona Ag Method for producing a tube or semi-finished tube and tube or semi-finished tube for chemical apparatus construction

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Publication number Publication date
DE2655597C3 (en) 1983-12-15
NL7613644A (en) 1977-06-13
FR2334733A1 (en) 1977-07-08
BE848955A (en) 1977-06-01
JPS5269989A (en) 1977-06-10
FR2334733B1 (en) 1979-03-30
IT1125227B (en) 1986-05-14
DE2655597B2 (en) 1978-07-27
DE2655597A1 (en) 1977-06-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19931202