TH35498C3 - The manufacturing process of a casting made of non-woven fabric treated on the surface. - Google Patents

Abstract

DC60 (17/06/53) The fabrication involves a coating process intended for the production of cast fiber segments. And where the reinforced surface of the molded fiber portion is also coated Thermoset resin or respectively Mixture of resin - hardener corresponding to the laminating process and the resulting part is heated to a temperature above the melting point and above. The initial temperature for the curing reaction of the thermoset resin used. And will be cooled after The coating has been cured. The fabrication involves a coating process intended for the production of cast fiber sections. And where the reinforced surface of the molded fiber portion is also coated Thermoset resin or respectively Mixture of resin - hardener corresponding to the laminating process and the resulting part is heated to a temperature above the melting point and above. The initial temperature for the curing reaction of the thermoset resin used. And will be cooled after The coating has been cured.

Claims (9)

1.Process for producing molded fiber sections that are surface reinforced using laminate materials for coating. Surface to be reinforced Which is unique in that the laminate material is included As an adhesive A non-drying thermoset resin that can be cured using formaldehyde. Fiber pulp With a binder consisting of thermoset resin This can be cured using formaldehyde and hardeners which release formaldehyde when heated. And formaldehyde of the released binder Release from fibrous membranes is used for curing adhesives. 2. The process according to claim 1, which is characterized as being in continuous production and in the form of Of continuous membranes Laminated materials are then applied to pre-fabricated fibrous membranes or at Pre-hardened And then the laminated item is cured under that pressure The temperature is higher than the initial temperature for the curing reaction of the binder used in the fiber membranes and of the adhesives. 3. The process according to claim 1, which is characterized by continuous and Of continuous membranes Laminated materials are treated with pre-fabricated or treated membranes. Pre-hardening And then the laminated item is annealed at a temperature above the point Melt of the adhesive and if desired Of binders used in fiber membranes And then it has been cooled and then has been knocked out or has been cut off to form And items that are laminated, which It has been hammered out or cut to form, then it is cured under pressure. It is accompanied by molding at a higher than initial temperature for the curing reaction of binders used in membranes and of adhesives. 4. Process according to claim 1, which is unique in that In the intermittent process, the cut-to-mold laminate is applied to pre-fabricated or pre-fabricated membranes. Pre-hardened or pre-fabricated And pre-hardened or pre-hardened and cut And then the laminated material was cured under pressure above the initial temperature. For the curing reaction of binders used in fibrous membranes and of adhesives. 5. Process for any of the above claims. Which has the characteristics that the resin used As a binding agent, is a hexamethylenetetramine-free novolac. 6. Process for any of the above claims. Which has the characteristics that the resin used As a binder, it is a modified phenolic resin. 7. The process according to claim 6, which is characterized by that the resin used as a binding agent is a phenolic resin. Modified with phenoxy resin 8. Process for any of the aforementioned claims. Which is unique in that it uses a powder method for Coating of laminated materials 9. Process for any of the aforementioned claims. It is characterized by that the viscosity of the resin measured at 175 ํ is less than 1000 milipoise.