Flexible thermoplastic pouches having easy-open tear strip means and apparatus for making same
作者： Jack R. Fagan , Eugene Fabisiewicz
DOI:
关键词:
摘要: A flexible thermoplastic pouch having an easy-open tear strip means secured thereto is provided. According to one embodiment of the present invention, a imperforate sidewall along two sawtooth securement lines arranged generally in shape ellipse. The point where converge give W-shape, which provides points high stress concentration. When user grasps and pulls means, rupture precisely at these concentration continue lines, thereby providing with dispensing opening predetermined size, shape, location. sealing die apparatus for forming sawtooth, notched between alos disclosed.
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