Interlocking device and packaging bag with interlocking device
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United States of America Patent
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Jun 11, 2013
Grant Date -
Sep 2, 2010
app pub date -
Oct 16, 2008
filing date -
Oct 22, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A packaging bag has a zipper including a pair of male member and a female member that are engageable with each other. The male member includes: a belt-shaped male base element provided on a packaging bag body; and a male engaging portion projecting from the belt-shaped male base element. The female member includes: a belt-shaped female base element located at a position opposed to the belt-shaped male base element; and a female engaging portion projecting from the belt-shaped female base element, the male engaging portion and the female engaging portion being disengageably engaged to form an engaging portion. The belt-shaped male base element and the belt-shaped female base element are made of a resin of which tensile modulus of elasticity is in a range of 700 MPa to 1600 MPa. The engaging portion is made of a resin of which tensile modulus of elasticity is in a range of 110 MPa to 560 MPa.
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