Abstract: A laminate includes a protective layer; a substrate layer; and a sealant layer, laminated in this order, wherein the substrate layer and the sealant layer contain polyethylene, the protective layer contains a thermosetting resin or a resin having a melting point of 160° C. or higher, and a ratio of polyethylene in the laminate is 90 mass % or more.

Abstract: Packaging containers for foods in which the contents can be safely kept and which give no metallic residue after incineration. A bag made of a film material wherein a light-blocking printed layer (4) having a sepia printed layer (7) is provided on the internal face of the bag. The color of the sepia printed layer (7) is controlled to give a color hue of 5R to 10R in the Mansell color system, a lightness of 5 to 7 and a chroma of 0 to 3, while the light (300 to 800 nm) permeability of the packing material (1) is controlled to 10% or less.

Abstract: A packaging bag (1) where the heat sealing parts of packaging materials (2, 3) having a printed light shielding layer (14) in the layer structure are overlapped and heat sealed, and a sealing state confirming part (8) having a light transmittance higher than that of the other sealing side is provided across one sealing side (11) out of both sealing sides facing each other when the heat sealing parts are overlapped. Visual confirmation of incomplete heat sealing part can thereby be facilitated.

Abstract: A packaging container having a chromatic color ink layer which is formed in a light-blocking printed layer (3), wherein a chromatic color ink applied to the chromatic color ink layer contains a white color family pigment and a black color family pigment and the contents of said black color family pigment amount to 3 to 5 parts by weight per 100 parts by weight of the total amount of the pigments in the chromatic color ink. The packaging container retains appropriate opacifying properties and light-blocking properties and provides no metallic residue when incinerated.

Abstract: A packaging container having a chromatic color ink layer which is formed in a light-blocking printed layer (3), wherein a chromatic color ink applied to the chromatic color ink layer contains a white color family pigment and a black color family pigment and the contents of said black color family pigment amount to 3 to 5 parts by weight per 100 parts by weight of the total amount of the pigments in the chromatic color ink. The packaging container retains appropriate opacifying properties and light-blocking properties and provides no metallic residue when incinerated.

Abstract: A packaging bag (1) where the heat sealing parts of packaging materials (2, 3) having a printed light shielding layer (14) in the layer structure are overlapped and heat sealed, and a sealing state confirming part (8) having a light transmittance higher than that of the other sealing side is provided across one sealing side (11) out of both sealing sides facing each other when the heat sealing parts are overlapped. Visual confirmation of incomplete heat sealing part can thereby be facilitated.

Abstract: Packaging containers for foods in which the contents can be safely kept and which give no metallic residue after incineration. A bag made of a film material wherein a light-blocking printed layer (4) having a sepia printed layer (7) is provided on the internal face of the bag. The color of the sepia printed layer (7) is controlled to give a color hue of 5R to 10R in the Mansell color system, a lightness of 5 to 7 and a chroma of 0 to 3, while the light (300 to 800 nm) permeability of the packing material (1) is controlled to 10% or less.