Method for producing a molding article

1. A method for producing a molding article, the method comprising:

preparing an insulated wire comprising an outermost layer disposed on an outer periphery of a conductor, the outermost layer comprising a resin composition comprising a fluorine-containing elastomer,

wherein the resin composition comprises a tetrafluoroethylene-propylene copolymer and an ethylene-tetrafluoroethylene copolymer as an entire base polymer or a portion of the base polymer at a mass ratio of the tetrafluoroethylene-propylene copolymer to the ethylene-tetrafluoroethylene copolymer in a range of 90:10 to 70:30, and

wherein the resin composition further comprises 5 to 60 parts by mass of calcium carbonate as an inorganic filler with respect to 100 parts by mass of the base polymer;

performing an atmospheric-pressure plasma treatment to the outermost layer by using an atmospheric-pressure plasma jet system for a ratio of a C═O bond to a C—C bond (C═O/C—C) on a surface of the outermost layer being not less than 0.5 under a condition that a treatment rate is 0.1 m/min to 5 m/min and a distance from a nozzle hole to the insulated wire is 3 mm to 7 min; and

forming a molding material comprising a polyamide resin or a polyurethane resin on an outer periphery of the insulated wire.

2. The method according to claim 1 , wherein the ratio of the C═O bond to the C—C bond (C═O/C—C) on the surface of the outermost layer is not less than 0.6.

3. The method according to claim 1 , wherein the ratio of the C═O bond to the C—C bond (C═O/C—C) on the surface of the outermost layer is not less than 0.8.

4. The method according to claim 1 , wherein the ratio of the C═O bond to the C—C bond (C═O/C—C) on the surface of the outermost layer is not less than 1.0.

5. The method according to claim 1 , wherein the resin composition comprises 5 to 60 parts by mass of the calcium carbonate and silica as the inorganic filler with respect to 100 parts by mass of the base polymer.

6. The method according to claim 1 , wherein the resin composition comprises 5 to 60 parts by mass of silica as the inorganic filler with respect to 100 parts by mass of the base polymer.

7. The method according to claim 1 , wherein the molding material comprises the polyimide resin.

8. The method according to claim 1 , wherein the molding material comprises the polyurethane resin.

9. The method according to claim 1 , wherein a polyamide resin contains glass filler,

wherein the ethylene-tetrafluoroethylene copolymer has a melt flow rate at a temperature of 297° C. and a pressure of 49N of not less than 10 gallons per 10 minutes, and

wherein the ethylene-tetrafluoroethylene copolymer has a melting point of not more than 240° C.

10. The method according to claim 9 , wherein the resin composition comprises 10 to 30 parts by mass of calcium carbonate as an inorganic filler with respect to 100 parts by mass of the base polymer.

11. The method according to claim 1 , wherein the ethylene-tetrafluoroethylene copolymer includes a third component.

12. A method for producing a molding article, the method comprising:

preparing a cable comprising an outermost layer disposed on an outer periphery of an insulated wire, the outermost layer comprising a resin composition comprising a Fluorine-containing elastomer,

wherein the resin composition comprises a tetrafluoroethylene-propylene copolymer and an ethylene-tetrafluoroethylene copolymer as an entire base polymer or a portion of the base polymer at a mass ratio of the tetrafluoroethylene-propylene copolymer to the ethylene-tetrafluoroethylene copolymer in a range of 90:10 to 70:30, and

wherein the resin composition further comprises 5 to 60 parts by mass of calcium carbonate as an inorganic filler with respect to 100 parts by mass of the base polymer;

performing an atmospheric-pressure plasma treatment to the outermost layer by using an atmospheric-pressure plasma jet system for a ratio of a C═O bond to a C—C bond (C═O/C—C) on a surface of the outermost layer being not less than 0.5 under a condition that a treatment rate is 0.1 m/min to 5 m/min and a distance from a nozzle hole to the insulated wire is 3 mm to 7 mm; and

forming a molding material comprising a polyamide resin or a polyurethane resin on an outer periphery of the cable.

13. The method according to claim 12 , wherein the ratio of the C═O bond to the C—C bond (C═O/C—C) on the surface of the outermost layer is not less than 0.6.

14. The method according to claim 12 , wherein the ratio of the C═O bond to the C—C bond (C═O/C—C) on the surface of the outermost layer is not less than 0.8.

15. The method according to claim 12 , wherein the ratio of the C═O bond to the C—C bond (C═O/C—C) on the surface of the outermost layer is not less than 1.0.

16. The method according to claim 12 , wherein the resin composition comprises 5 to 60 parts by mass of the calcium carbonate and silica as the inorganic filler with respect to 100 parts by mass of the base polymer.

17. The method according to claim 12 , wherein the resin composition comprises 5 to 60 parts by mass of silica as the inorganic filler with respect to 100 parts by mass of the base polymer.

18. The method according to claim 12 , wherein the molding material comprises the polyamide resin.

19. The method according to claim 12 , wherein the molding material comprises the polyurethane resin.

20. The method according to claim 12 , wherein a polyamide resin contains glass filler,

wherein the ethylene-tetrafluoroethylene copolymer has a melt flow rate at a temperature of 297° C. and a pressure of 49N of not less than 10 gallons per 10 minutes, and

wherein the ethylene-tetrafluoroethylene copolymer has a melting point of not more than 240° C.