Method for inspecting shaped product, and method for manufacturing shaped product
AssigneeDaikin Industries, Ltd.
InventorsTakahisa Aoyama, Hayato Tsuda, Yuuki Kuwajima
Life of this patent
Estimating the term…
Abstract
A method for inspecting a molded article, the method enabling non-destructive inspection of an internal condition of a molded article containing fluorine, and a method for producing a molded article including the inspection method. The method for inspecting a molded article includes a step (A1) of inspecting an internal condition of a molded article having a fluorine content of 30% by mass or more based on image data obtained by imaging the molded article by optical coherence tomography.
Claims10
A method for inspecting a molded article, comprising:
- a step (A1) of inspecting an internal condition of a molded article having a fluorine content of 30% by mass or more based on image data obtained by imaging the molded article by optical coherence tomography (OCT),
- wherein in the OCT imaging, light from a light source of an OCT device has an incident angle α of 5 to 10 degrees relative to the molded article,
- wherein the incident angle α is the angle formed by the incident direction of the light and a perpendicular to a surface of the molded article, and
- wherein the molded article has a single-layer structure.
A method for producing a molded article comprising:
- a step (B1) of molding a material containing a fluorine atom to provide a plurality of molded articles each having a fluorine content of 30% by mass or more;
- a step (B2) of selecting at least one molded article from the plurality of molded articles and inspecting an internal condition of the selected molded article based on image data obtained by imaging the selected molded article by optical coherence tomography (OCT);
- and
- a step (B3) of sorting a good product from the plurality of molded articles based on a result of the inspection in the step (B2),
- wherein in the OCT imaging, light from a light source of an OCT device has an incident angle α of 5 to 10 degrees relative to the molded article,
- wherein the incident angle α is the angle formed by the incident direction of the light and a perpendicular to a surface of the molded article, and
- wherein the molded article has a single-layer structure.
A method for inspecting a molded article, comprising:
- a step (A1) of inspecting an internal condition of a molded article having a fluorine content of 30% by mass or more based on image data obtained by imaging the molded article by optical coherence tomography (OCT),
- wherein in the OCT imaging, a filter containing a crystalline polymer is provided between a light source of an OCT device and the molded article,
- wherein the crystalline polymer is at least one selected from the group consisting of a tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer, and a tetrafluoroethylene/hexafluoropropylene copolymer.
A method for producing a molded article comprising:
- a step (B1) of molding a material containing a fluorine atom to provide a plurality of molded articles each having a fluorine content of 30% by mass or more;
- a step (B2) of selecting at least one molded article from the plurality of molded articles and inspecting an internal condition of the selected molded article based on image data obtained by imaging the selected molded article by optical coherence tomography (OCT);
- and
- a step (B3) of sorting a good product from the plurality of molded articles based on a result of the inspection in the step (B2),
- wherein in the OCT imaging, a filter containing a crystalline polymer is provided between a light source of an OCT device and the molded article,
- wherein the crystalline polymer is at least one selected from the group consisting of a tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer, and a tetrafluoroethylene/hexafluoropropylene copolymer.
Dependencies are inferred from the claim text.