B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
B65B 61/02 (2006.01) B31B 19/74 (2006.01) B65B 61/18 (2006.01)
Patent
CA 2168599
Disclosed is a tearability imparting apparatus capable of imparting tearability to the corner of an unsealed pouch at which a closed liquid discharge portion is located, thereby making the corner easily tearable obliquely. This tearability imparting apparatus for imparting to a pre-form which has been prepared by heat-sealing a layflat and tubular member opening at both ends and having a heat-fusible film on inner surface, and which has a plurality of unsealed pouches, each having a opening in one side, more precisely, imparting tearability to the corner of each unsealed pouch, in which the closed liquid discharge portion is located, the apparatus comprising a lower block having a first perforating member on a surface region, the first perforating member being formed by depositing a large number of particles having acute corners and a Mohs hardness of 5 or more on the surface region, an upper block arranged above the lower block and having a second perforating member on a surface region opposing the first perforating member, the second perforating member being formed by depositing a large number of particles having acute corners and a Mohs hardness of 5 or more on the surface region, and driving means for moving the upper block toward the lower block until the distance between points of the particles on the first and second perforating members becomes smaller than the thickness of the pre-form supplied onto the lower block, thereby pressing the acute corners of the large number of particles into both surfaces of the corner of the unsealed pouch formed in the pre-form, forming a large number of non-through pores.
Kagawa Seiji
Mccarthy Tetrault Llp
LandOfFree
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