EP3436508A1 - Verfahren zur herstellung eines dachelements eines kraftfahrzeuges und dachelement mit formabschnitt - Google Patents
Verfahren zur herstellung eines dachelements eines kraftfahrzeuges und dachelement mit formabschnittInfo
- Publication number
- EP3436508A1 EP3436508A1 EP17706421.9A EP17706421A EP3436508A1 EP 3436508 A1 EP3436508 A1 EP 3436508A1 EP 17706421 A EP17706421 A EP 17706421A EP 3436508 A1 EP3436508 A1 EP 3436508A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roof element
- organosiloxane compound
- mold
- polymer mixture
- compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- -1 organosiloxane compound Chemical class 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000004814 polyurethane Substances 0.000 claims abstract description 33
- 238000005187 foaming Methods 0.000 claims abstract description 32
- 229920002635 polyurethane Polymers 0.000 claims abstract description 32
- 229920002959 polymer blend Polymers 0.000 claims abstract description 24
- 239000012948 isocyanate Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 19
- 229920005862 polyol Polymers 0.000 claims description 19
- 150000003077 polyols Chemical class 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 18
- 239000011521 glass Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 229920000642 polymer Polymers 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 206010012289 Dementia Diseases 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 description 22
- 239000006260 foam Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 10
- 239000000654 additive Substances 0.000 description 6
- 150000002513 isocyanates Chemical class 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 230000000996 additive effect Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000010107 reaction injection moulding Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000007872 degassing Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 125000005375 organosiloxane group Chemical group 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- PXFBZOLANLWPMH-UHFFFAOYSA-N 16-Epiaffinine Natural products C1C(C2=CC=CC=C2N2)=C2C(=O)CC2C(=CC)CN(C)C1C2CO PXFBZOLANLWPMH-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920005903 polyol mixture Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
Classifications
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/72—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7404—Mixing devices specially adapted for foamable substances
- B29B7/7409—Mixing devices specially adapted for foamable substances with supply of gas
- B29B7/7414—Mixing devices specially adapted for foamable substances with supply of gas with rotatable stirrer, e.g. using an intermeshing rotor-stator system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7404—Mixing devices specially adapted for foamable substances
- B29B7/7433—Plants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/84—Venting or degassing ; Removing liquids, e.g. by evaporating components
- B29B7/845—Venting, degassing or removing evaporated components in devices with rotary stirrers
- B29B7/847—Removing of gaseous components before or after mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/86—Component parts, details or accessories; Auxiliary operations for working at sub- or superatmospheric pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/88—Adding charges, i.e. additives
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/1271—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed parts being partially covered
-
- 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
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
- B29C67/246—Moulding high reactive monomers or prepolymers, e.g. by reaction injection moulding [RIM], liquid injection moulding [LIM]
-
- 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
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
-
- 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
- B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
-
- 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
- B29K2085/00—Use of polymers having elements other than silicon, sulfur, nitrogen, oxygen or carbon only in the main chain, as moulding material
-
- 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
- B29K2709/00—Use of inorganic materials not provided for in groups B29K2703/00 - B29K2707/00, for preformed parts, e.g. for inserts
- B29K2709/08—Glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3002—Superstructures characterized by combining metal and plastics, i.e. hybrid parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J7/00—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs
- B60J7/02—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of sliding type, e.g. comprising guide shoes
- B60J7/04—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of sliding type, e.g. comprising guide shoes with rigid plate-like element or elements, e.g. open roofs with harmonica-type folding rigid panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J7/00—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs
- B60J7/02—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of sliding type, e.g. comprising guide shoes
- B60J7/04—Non-fixed roofs; Roofs with movable panels, e.g. rotary sunroofs of sliding type, e.g. comprising guide shoes with rigid plate-like element or elements, e.g. open roofs with harmonica-type folding rigid panels
- B60J7/043—Sunroofs e.g. sliding above the roof
-
- 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
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
- C08J2201/022—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments premixing or pre-blending a part of the components of a foamable composition, e.g. premixing the polyol with the blowing agent, surfactant and catalyst and only adding the isocyanate at the time of foaming
-
- 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
- C08J2207/00—Foams characterised by their intended use
-
- 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- 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
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
Definitions
- the invention relates to a method for producing a roof element of a motor vehicle and a roof element having the features of the preamble of patent claim 6.
- Roof elements of motor vehicles are often formed from a glass panel and constitute a cover element of a roof opening system, which is provided for connection to the vehicle body with a peripheral RandumCumung, which consists of a polyurethane material and can be embedded in the bracket.
- the production of the peripheral RandumCumung takes place in a foaming tool, which is provided with a cavity into which a polyurethane material is introduced to form the RandumCumung.
- the polyurethane material consists of a polymer mixture, in particular a polyol mixture, and an isocyanate
- the finished workpiece that is, the glass panel with the edge foam can be removed from the foaming mold.
- the mold cavity of the foaming tool or the mold cavity delimiting tool wall must be provided with a release agent.
- a release agent applicator to be provided specifically on the foaming tool. which usually includes a so-called release agent gun and which is associated with a high cost.
- the release agent builds a release film on the mold portion formed in the mold cavity, which prevents sticking of the mold portion to the foaming tool. Because the release agent by hand is applied, the thickness of the release film can vary greatly. Any residues on the mold section made in the foaming tool thus also vary greatly. However, the release agent residues can have a considerable influence on the adhesiveness of the mold section.
- the release agent builds in the course of a production shift, ie at
- Release agents are cleaned. Furthermore, when applied, a release agent mist develops, to which the respective worker is exposed and which can be detrimental to health.
- the invention has for its object to provide a method for producing a roof element of a motor vehicle, in which the above-mentioned, resulting from the release agent problems are eliminated. This object is achieved by the method with the features of claim 1.
- a polyurethane material which has an internal release agent in the form of a high molecular weight, long-chain organosiloxane compound, which enriches the Sepatiumrind on the surface of the mold section, which is formed in the mold cavity of the foaming tool, and Such an Ent forms of the roof element, which has the mold section, from the
- Foaming tool guaranteed.
- the use of an external release agent with which the foaming tool has been sprayed in the region of the mold cavity or the cavity so far, can be dispensed with. Consequently, it is possible to dispense with a complicated release agent application device on the foaming tool.
- the foaming tool can also be operated with shorter cycle times, since the release agent cycle is used to apply the external release agent.
- the organosiloxane compound, which constitutes an internal release agent has a largely constant release agent layer on the surface of the molding section, since it is uniformly distributed in the respective surface-structure matrix of the polyurethane material.
- the organosiloxane compound does not interfere with the physical properties of the mold portion over a mold portion without an organosiloxane compound as an internal release agent. Rather, the mold section has an unchanged polymer matrix, which is decisive for the physical properties, such as hardness, tensile strength and elongation at break. Also, no further reactivity balance additives are needed since the organosiloxane compound does not alter the chemistry of the mold section in its central regions. Namely, when the polymer mixture is reacted with the isocyanate compound, the organosiloxane compound is forced outwardly toward the mold wall. This is due to the reaction heat generated in the reaction, which leads to a phase separation.
- the temperatures which arise in the reaction of the polymer mixture with the isocyanate compound may be greater than 00 ° C.
- the organosiloxane compound does not affect the reactivity of the polyurethane system formed from the polymer blend and the isocyanate compound to perform a RIM (Reaction Injection Molding) process.
- the long-chain molecules of the organosiloxane compound by migration, convection and exothermic energy to the surface of the poly- urethane material within the first few milliseconds. Due to the long-chain structure of the organosiloxane compound, they hold on the surface in the manner of a surfboard, that is to say in the area of the interface with the tool wall in the region of the mold cavity of the foaming tool. Towards the end of the reaction, the organosiloxane compound is partially incorporated into the polyurethane matrix. Here, a uniform, fine distribution of the organosiloxane compound is achieved on the surface of the mold section.
- organosiloxane compound This behavior of the organosiloxane compound could be detected by gas chromatography and mass spectrometer studies.
- the organosiloxane compound thus builds a release film between the reacted polyurethane material and the tool wall, which prevents adhesion of the polyurethane to the tool wall.
- the organosiloxane compound namely a cohesive fracture between the foaming mold and the mold section is possible, so that the mold release is given.
- An organosiloxane has the general structural formula:
- n is an integer and Ri, R 2 .
- R and R 4 represent organic compounds.
- a paint, in particular KTL (cathodic dip coating) -coated metal are to be arranged in the polyurethane material, these bond well with the mold section despite the organosiloxane compound, since the cathodic electrocoating coating itself is a binder.
- Pigment paste and water-miscible organic solvents are often epoxy resin amine adducts and blocked isocyanates.
- the binders and pigment paste make up the majority of the solids contained in the dipping solution for making the cathodic dip coating.
- the binder of the KTL coating, especially the isocyanate ensures that between the KTL coating Coating and the molding section of the polyurethane material sufficient bonding points arise.
- the organosiloxane compound is the polymer mixture in an amount of 0.5 wt. % to 8 wt .-% mixed.
- the organosiloxane compound used may have a molecular weight between 15,000 g / l and 50,000 g / l.
- the organosiloxane compound used thus comprises long-chain organosiloxanes and represents an internal release agent, and indeed, in contrast to short-chain siloxanes, which may be cell stabilizers and do not serve as release agents.
- the polymer blend provided in the process of the invention is preferably a polyol composition. This is added on the one hand, the organosiloxane compound. On the other hand, the isocyanate compound is added to the polyol composition in a mixing and dosing head and then introduced into the mold cavity.
- the mold section is formed on a panel made of glass or a plastic material.
- the mold section then forms in particular a peripheral edge foam around the panel.
- the roof element is a cover element of a roof opening system
- the peripheral edge foam serves to receive inserts, via which the panel can be connected to a kinematics of the roof opening system.
- the peripheral RandumCumung serve to receive a seal or as a sealing device to close a corresponding roof opening of the relevant motor vehicle sufficiently tight in a Schi manbig too tight in a Schi manbig too tight in a Schi mandar sued the lid member can.
- the organosiloxane compound enriched in the surface of the mold section also does not interfere with the bonding of the mold section to the glass panel this is provided with a primer.
- the primer contains binding elements that are affine for isocyanate.
- the process according to the invention finds application, for example, in high-pressure foaming processes, which are referred to as so-called RIM (Reaction Injection Molding) processes, or in low-expansion foam processes, in which the polyurethane material is introduced into a mold at ambient pressure and corresponding low-pressure metering devices for Inserting the material are used in the mold cavity.
- RIM Reaction Injection Molding
- WST Window Spray Technology
- the invention also relates to a roof element of a motor vehicle, comprising a molding section which is made of a material comprising polyurethane according to a foaming process and which is enriched on its surface with an organosiloxane compound.
- the organosiloxane compound is an integral part of the molding and is taken up by the structure of the polyurethane material in its ausreagierter form, wherein the consisting of high molecular weight, long-chain molecules organosiloxane compound in the production tool for the molding section forms a release film, the demolding of the Roof element without the use of an external release agent allows.
- the organosiloxane compound forms a surface layer of the mold section, which has a thickness between 0.5 ⁇ and 20 ⁇ .
- the molecular weight of the organosiloxane compound is preferably between 15,000 g / l and 50,000 g / l.
- the roof element may be a cover element of a roof opening system.
- the mold section then forms, for example, a peripheral edge foam of a panel which is made of glass or a plastic material.
- Figure 1 is a plan view of a Deckenielement a roof opening system of a
- FIG. 2 is a section through the cover element of Figure 1 along the line II-II in Figure 1;
- FIG. 3 shows a device for processing a liquid polyol composition;
- Figure 4 is a fragmentary sectional view of a tool for producing a mold portion of the lid member of Figure l in the closed position; and FIG. 5 shows a representation of the foaming tool corresponding to FIG. 4, but in its open position.
- FIGS. 1 and 2 a cover element 1 of a roof opening system of a vehicle roof, which is not shown in detail, is shown.
- a roof opening of the vehicle roof can optionally be closed or at least partially released.
- the lid member 1 comprises a substantially rectangular glass panel 2 provided with a glass frit and a primer.
- the glass panel 2 is provided along its peripheral edge with a RandumCumung 3, in the side relative to a vertical roof longitudinal center plane
- Rims are each three retaining tabs 4 embedded as inserts.
- the retaining tabs 4 are each made of a metal sheet, which is provided with a KTL coating.
- the edge foam 3 consists of a polyurethane material which is mixed with an organosiloxane compound.
- the organosiloxane compound is enriched within a surface layer 5 of the edge foam 3.
- the surface layer 5 has a thickness of a few micrometers.
- FIGS. 3 to 5 The production of the edge foam 3 of the cover element 1 is shown schematically in FIGS. 3 to 5.
- a foaming tool 6 shown in Figures 4 and 5 is used, in which a mold cavity 7 is formed, which corresponds to the shape of the RandumMumung 3 and which is bounded by an upper tool 8 and a lower tool 9 of the foaming tool 6.
- the glass panel 2 provided with the glass primer and the glass frit is placed on the lower tool 9 in the open position of the foaming tool 6 shown in FIG. 5, in which the upper tool 8 and the lower tool 9 have moved apart.
- the retaining tabs 4 are fixed in a manner not shown.
- the upper tool 8 is moved against the lower tool 9 to form the mold cavity 7.
- the polymer can be introduced into the mold cavity 7 of the closed foaming tool 6 and react there.
- the retaining tabs 4 are embedded in the polyurethane material.
- the polyurethane material used is mixed with an organosiloxane compound having a molecular weight of 15,000 g / l and 50,000 g / l.
- the organosiloxane compound When reacting the polyurethane material, the organosiloxane compound is pressed due to the resulting heat of reaction by means of a phase separation against the boundary surfaces of the cavity formed by the upper tool 8, the lower tool 9 and the glass panel 2, so that enriched with the organosiloxane compound surface layer 5 forms at the edge foam 3.
- the finished cover element 1 can now be removed from the mold.
- the polyurethane Material from a metering and mixing head 100 in the foaming mold 6 and the mold cavity 7 passed.
- a polyol composition which has been mixed with the organosiloxane compound and prepared in a device 10, and an isocyanate compound held in a container 60 are mixed with each other, to then form the mold cavity 7 to be dosed.
- the device 10 for the preparation of the polyol composition which is a reaction polymer for the polyurethane system, is shown in FIG.
- the apparatus 10 comprises a reservoir 12 in which the polyol composition is storable and which is provided with a stirrer 14 to cancel any storage-related layering of the polyol composition.
- the reservoir 12 is connected via a line 16, in which a feed pump 18 is arranged, with a degassing device 20, which is formed by a vacuum ventilator.
- a degassing device 20 which is formed by a vacuum ventilator.
- Connected to the vacuum ventilator is an outlet line 22, in which a further feed pump 24 and a mass flow meter 26 are arranged and which leads to a homogenizer 28, which is formed by a tooth colloid mill.
- a metering valve 52 is arranged on the line 22, via which an additive gas can be added to the polyol composition and which is part of a gassing device.
- Downstream of the metering valve 52 and upstream of the homogenizer opens into the conduit 16, a supply line 54 which is connected to a reservoir 56 for the Organosilo- xan connection,
- the homogenizer 28 has a discharge line 30 which leads into a container 32 in which the treated polymer mixture can be stored and which is provided with a stirrer 34. In the container 32 there is an overpressure between 1 and 6 bar.
- the discharge line 30 leads into the container 32 in such a way that the prepared polymer mixture under the mirror is supplied to the polymer mixture already present in the container 32.
- the level or level of the polymer mixture in the container 32 is always held between two brands, of which a lower with a first sensor 36 and an upper with a second sensor 38 is provided.
- the sensor 36 associated with the lower mark responds when the nominal filling level in the container 32 is undershot and further liquid polymer mixture has to be processed.
- the second sensor 38 assigned to the upper mark responds when the desired fill level has been exceeded and the preparation of the liquid polymer mixture by means of the device 10 has to be stopped.
- the container 32 is connected via a feed line 40 with the metering and mixing head 100, which is assigned to the foaming tool 6 for producing the edge foam 3 of the lid member 1 and in which the isocyanate compound is added to the polyol composition for the formation of the polyurethane system ,
- a return line 42 which forms a ring line with the supply line 40 for supplying a plurality of processing stations.
- the device 10 has a control device 44, which is connected via a line 46 to the mass flow meter 26 and is connected via a line 48 to a gas mass flow meter 50, which is likewise assigned to the gassing device, and to the metering valve 52.
- an additive gas for example carbon dioxide or an inert gas
- the control device is equipped with the valve 58 for metering in the organosiloxane compound connected to the reservoir 56 via line 54.
- the polyol composition which is stirred up in the storage container 12, is conveyed by means of the feed pump 18 into the degassing device 20, where it is freed from undefined gas charges. Subsequently, the degassed, consisting of the polyol composition polymer mixture is conveyed by the feed pump 24 through the output line 22. In this case, first the amount of the polyol composition is determined by means of the mass flow meter 26 and then, as a function of this measurement, by means of the control device 44 via the gas mass flow rate. Flow meter 50 and the metering valve 52 additive gas and via the valve 58, the organosiloxane compound added.
- the polyol composition now charged with additive gas and the organosiloxane compound is passed through the homogenizer 28 to finely disperse gas bubbles formed from the additive gas in the polyol composition. Then, the thus prepared polyol composition is passed via the discharge line 30 into the container 32, so that it can be further processed, in particular by addition of an isocyanate can be processed into a polyurethane system, which is used to produce the hard foam edge foam Cover element 1 or the like can be used.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016105785.1A DE102016105785B4 (de) | 2016-03-30 | 2016-03-30 | Verfahren zur Herstellung eines Dachelements eines Kraftfahrzeuges und Dachelement mit Formabschnitt |
| PCT/EP2017/052378 WO2017167476A1 (de) | 2016-03-30 | 2017-02-03 | Verfahren zur herstellung eines dachelements eines kraftfahrzeuges und dachelement mit formabschnitt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3436508A1 true EP3436508A1 (de) | 2019-02-06 |
Family
ID=58098594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17706421.9A Withdrawn EP3436508A1 (de) | 2016-03-30 | 2017-02-03 | Verfahren zur herstellung eines dachelements eines kraftfahrzeuges und dachelement mit formabschnitt |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20200298455A1 (de) |
| EP (1) | EP3436508A1 (de) |
| CN (1) | CN109153805A (de) |
| DE (1) | DE102016105785B4 (de) |
| WO (1) | WO2017167476A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017106751B3 (de) * | 2017-03-29 | 2018-05-30 | Webasto SE | Verfahren zum Herstellen einer Dichtung zwischen zwei Dachrahmenelementen sowie Anordnung mit zwei Dachrahmenelementen |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60108414A (ja) * | 1983-11-18 | 1985-06-13 | Asahi Glass Co Ltd | ポリウレタン系エラストマ−の製造方法 |
| DE10331270B4 (de) | 2003-07-10 | 2007-09-20 | Webasto Ag | Deckel für eine Öffnung in einer Dachfläche eines Fahrzeugs sowie Herstellungsverfahren dafür |
| DE10337461B4 (de) * | 2003-08-14 | 2008-11-13 | Webasto Ag | Vorrichtung zum Spritzen oder Schäumen eines Bauteils |
| WO2008075725A1 (ja) * | 2006-12-19 | 2008-06-26 | Asahi Glass Company, Limited | 軟質ポリウレタンフォームの製造方法 |
| CN102615747A (zh) * | 2011-02-01 | 2012-08-01 | 汉高股份有限及两合公司 | 一种脱模剂及其制备方法和用途 |
| DE102011007479A1 (de) | 2011-04-15 | 2012-10-18 | Evonik Goldschmidt Gmbh | Zusammensetzung, enthaltend spezielle Amide und organomodifizierte Siloxane, geeignet zur Herstellung von Polyurethanschäumen |
| CN102922621B (zh) * | 2012-11-23 | 2015-06-10 | 中国科学院宁波材料技术与工程研究所 | 一种纤维增强复合材料汽车顶盖的生产方法 |
| DE102012111350A1 (de) * | 2012-11-23 | 2014-05-28 | Webasto SE | Verfahren zur Herstellung eines flächigen Kraftfahrzeugkarosserieelements und Kraftfahrzeugkarosserieelement |
-
2016
- 2016-03-30 DE DE102016105785.1A patent/DE102016105785B4/de active Active
-
2017
- 2017-02-03 CN CN201780026705.2A patent/CN109153805A/zh active Pending
- 2017-02-03 EP EP17706421.9A patent/EP3436508A1/de not_active Withdrawn
- 2017-02-03 WO PCT/EP2017/052378 patent/WO2017167476A1/de not_active Ceased
- 2017-02-03 US US16/088,497 patent/US20200298455A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US20200298455A1 (en) | 2020-09-24 |
| DE102016105785B4 (de) | 2019-02-14 |
| DE102016105785A1 (de) | 2017-10-05 |
| WO2017167476A1 (de) | 2017-10-05 |
| CN109153805A (zh) | 2019-01-04 |
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