Spout member and packaging bag utilizing same
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Example 1
[0128]A packaging bag 1 having a similar construction as in FIG. 1 was manufactured by using laminate films in which a polyethylene terephthalate (PET) film having a thickness of 12 μm, a polyethylene terephthalate (PET) film having a thickness of 12 μm and barrier property and including an aluminum oxide (Al2O3) thin film, a polyamide (PA) film having a thickness of 15 μm and a linear low-density polyethylene (LLDPE) film having a thickness of 100 μm were successively laminated via adhesive layers as the film pieces 1a, 1a in the packaging bag 1 of FIG. 1, thermally fusing peripheral portions with the LLDPE films as sealant layers, and forming a linear fastener portion 7 and an easily peelable portion 8 at an inlet portion. At this time, a spout member 4a made of a high-density polyethylene (HDPE) resin was thermally bonded as a spout portion 4 to one side of the peripheral portion such that a base portion of the spout member 4a was sandwiched between the film pieces. Furt...
Example
Example 2
[0129]Using laminate films in which a polyethylene terephthalate (PET) film having a thickness of 12 μm, a polyethylene terephthalate (PET) film having a thickness of 12 μm and barrier property and including an aluminum oxide (Al2O3) thin film, a polyamide (PA) film having a thickness of 15 μm and a linear low-density polyethylene (LLDPE) film having a thickness of 100 μm were successively laminated via adhesive layers as the film pieces 53a, 53a in the packaging bag 53 of FIG. 14, peripheral portions were thermally fused with the LLDPE films as sealant layers. At that time, a fastener seal 59 as a closure means and an easily peelable portion 61 for an aperture to protect the fastener seal 59 before opening were provided at inner sides of the film pieces of a part 56 which becomes an aperture at the time of opening as shown in FIG. 14. As shown in FIG. 15, a first base member 65 with a male first member 60a and a second base member 66 with a female second member 60b of the ...
Example
Example 3
[0132]A cap portion shaped as shown in FIG. 20, made of a high-density polyethylene resin and having a thickness of 1 mm and a height of 35 mm was fabricated by injection molding. Further, a spout portion shaped as shown in FIG. 20, made of a high-density polyethylene resin and having a base portion width of 30 mm, a base portion height of 10 mm and a cylindrical portion height of 30 mm and a sealing portion were integrally fabricated by molding with the sealing portion mounted at a tip portion of a cylindrical portion via a thinned portion (weakened portion) having a thickness of 0.2 mm. The sealing portion was engaged with a supporting portion of the cap portion to form a spout member.
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