Search

JP-7855974-B2 - packaging container

JP7855974B2JP 7855974 B2JP7855974 B2JP 7855974B2JP-7855974-B2

Inventors

  • 堀内 雅文
  • 岡澤 博
  • 山脇 健太郎

Assignees

  • ＴＯＰＰＡＮホールディングス株式会社

Dates

Publication Date
20260511
Application Date
20220902

Claims (7)

  1. A packaging container formed from a resin composition containing polyethylene terephthalate resin derived from biomass resources, A packaging container wherein the half-value of the halo peak in the diffraction chart obtained by performing an X-ray diffraction test on the resin composition using CuKα radiation at 25°C is 0.94 to 1.06 relative to the half-value width of the halo peak derived from fossil fuel-derived polyethylene terephthalate resin, measured using CuKα radiation at 25°C.
  2. The packaging container according to claim 1, wherein the half-value of the halo peak calculated by integral intensity in the diffraction chart obtained by performing an X-ray diffraction test on the resin composition using CuKα radiation at 25°C is 0.96 to 1.04 relative to the half-width of the halo peak derived from fossil fuel-derived polyethylene terephthalate resin, measured using CuKα radiation at 25°C.
  3. A packaging container formed from a resin composition containing polyethylene terephthalate resin derived from biomass resources, A packaging container wherein the difference between the peak top and the midpoint of the halo peak, calculated by integral intensity calculation of the halo peak in the diffraction chart obtained by performing an X-ray diffraction test on the resin composition using CuKα radiation at 25°C, is 0.24 to 5.08 compared to the difference between the peak top and the midpoint of the halo peak of a fossil fuel-derived polyethylene terephthalate resin measured using CuKα radiation at 25°C.
  4. The packaging container according to claim 3, wherein the difference between the peak top and the center value of the half-width in the diffraction chart obtained by performing an X-ray diffraction test on the resin composition using CuKα radiation at 25°C is 0.33 to 4.31 compared to the difference between the peak top and the center value of the half-width of the halo peak derived from fossil fuel-derived polyethylene terephthalate resin, measured using CuKα radiation at 25°C.
  5. A packaging container according to any one of claims 1 to 4, wherein the measured half-value of the resin composition is 11.50° or higher, and the difference between the peak top and the midpoint of the half-width is 0.40° or lower.
  6. A packaging container formed from a resin composition containing polyethylene terephthalate resin derived from biomass resources, A packaging container wherein the half-value of the halo peak in the diffraction chart obtained by performing an X-ray diffraction test on the resin composition using CuKα radiation at 25°C is 11.00 to 12.00°, and the difference between the peak top and the center value of the half-value is 1.00° or less.
  7. The packaging container according to claim 6, wherein the half-value is 11.36 to 11.51°, and the difference between the peak top and the midpoint of the half-value is 0.76° or less.

Description

This invention relates to a packaging container. Plastic packaging containers, such as those made of polyethylene terephthalate (PET), are commonly known. Because plastic packaging containers are lightweight and have excellent chemical resistance to their contents, they are used to contain a variety of items, including beverages, liquid condiments, and detergents. Japanese Patent Publication No. 2018-199524 Rika Takeda, Kyoichi Tsurusaki, "Evaluation of Residual Strain in PET Bottles," Research Report of Kanagawa Prefectural Industrial Technology Center, No. 16, pp. 84-86, (2010)X-ray Handbook, Rigaku Corporation, (Fifth edition published 2006)NIST Public Database "X-Ray Attenuation Counselors" Figure 1-1 shows the results of the integrated intensity calculation using the peak-top method for the halo peak of bottle sample 2 (n3 sample) of Comparative Example 1.Figure 1-2 shows the results of the integrated intensity calculation using the half-width method for the halo peak of bottle sample 2 (n3 sample) of Comparative Example 1.Figure 2-1 shows the results of the integrated intensity calculation using the peak-top method for the halo peak of bottle sample 2 (n3 sample) in Example 1.Figure 2-2 shows the results of the integrated intensity calculation using the half-width method for the halo peak of bottle sample 2 (n3 sample) in Example 1.Figure 3-1 shows the results of the integrated intensity calculation using the peak-top method for the halo peak of bottle sample 2 (n3 sample) in Example 2.Figure 3-2 shows the results of the integrated intensity calculation using the half-width method for the halo peak of bottle sample 2 (n3 sample) in Example 2.Figure 4 is a schematic front view showing a partially cross-sectional end face of one embodiment of a lidded container according to one embodiment of the present invention. The packaging container of this embodiment is a packaging container formed from a resin composition containing polyethylene terephthalate resin derived from biomass resources, and the diffraction chart obtained by performing an X-ray diffraction test on the resin composition using CuKα rays at 25°C satisfies at least one of the following conditions (1) to (3). (1) The half-value calculated by integral intensity of the halo peak is 0.94 to 1.06 relative to the half-width of the halo peak originating from fossil fuel-derived polyethylene terephthalate resin, measured at 25°C using CuKα radiation. (2) The difference between the peak top and the midpoint of the halo peak calculated by integral intensity calculation is 0.24 to 5.08 compared to the difference between the peak top and the midpoint of the halo peak derived from fossil fuel-derived polyethylene terephthalate resin measured at 25°C using CuKα radiation. (3) The half-value calculated by integral intensity of the halo peak is 11.00 to 12.00°, and the difference between the peak top and the midpoint of the half-value is 1.00° or less. Such packaging containers have excellent buckling strength. The half-value calculated from the integrated intensity of the halo peak may be 0.96 to 1.04 relative to the half-width of the halo peak derived from fossil fuel-derived polyethylene terephthalate resin. The difference between the peak top and the midpoint of the halo peak, calculated by integral intensity calculation, may be between 0.33 and 4.31 compared to the difference between the peak top and the midpoint of the halo peak originating from fossil fuel-derived polyethylene terephthalate resin, measured at 25°C using CuKα radiation. The half-value calculated by integral intensity calculation of the halo peak may be 11.00° or more, 11.20° or more, 11.30° or more, 11.36° or more, 11.40° or more, 11.45° or more, or 11.50° or more. The half-value calculated by integral intensity calculation of the halo peak may be 12.00° or less, 11.90° or less, 11.80° or less, 11.70° or less, or 11.51° or less. The half-value calculated by integral intensity calculation of the halo peak may be between 11.20 and 12.00°, 11.30 and 11.90°, 11.40 and 11.80°, 11.45 and 11.70°, or 11.50 and 11.60°. The half-value calculated from the integrated intensity of the halo peak can be between 11.36 and 11.51°. The difference between the peak top and the center value of the full width at half maximum (FWHM) calculated by the integral intensity calculation of the halo peak may be 1.00° or less, 0.90° or less, 0.80° or less, 0.76° or less, 0.75° or less, 0.65° or less, 0.60° or less, 0.50° or less, 0.45° or less, and 0.40° or less. The difference between the peak top and the center value of the FWHM calculated by the integral intensity calculation of the halo peak may be 0.05° or more, 0.10° or more, and 0.20° or more. The difference between the peak top and the midpoint of the halo peak, calculated by integral intensity calculation, may be 1.00–0.05°, 0.90–0.05°, 0.80–0.05°, 0.75–0.10°, 0.65–0.10°, 0.60–0.10°, 0.50–0.20°, or 0.45–0.20°. The bio-content (biomass content) of polyethyl