Easy-open sealed container
AssigneeFujimura Kogyo Co., Ltd.
InventorKaoru Fujimura
Life of this patent
Estimating the term…
Abstract
An easy-open sealed container satisfying requests of perfectivity of sealing and readiness of unsealing is provided. The container includes a plastic pack container, a flange portion surrounding an opening of the plastic pack container, a seal film bonded onto an upper surface of the flange portion to thereby seal the pack container, and a peeling film bonded onto a lower surface of the flange portion. The flange portion includes a broken portion including a cut-off line and a connection part formed in a part or a whole of the flange portion. The peeling film includes a peeling-start portion extruding outward or inward of the flange portion.
Claims14
An easy-open sealed container comprising:
- a flange portion surrounding an opening portion of a plastic pack container, the flange portion comprising a broken portion including a cut-off line and a connection part formed in a part or a whole of the flange portion, the flange portion being separated by the broken portion, along the entirety thereof or along a part thereof, into an inner portion disposed near the opening portion and an outer portion disposed near a peripheral edge of the flange portion;
- a seal film bonded onto an upper surface of the flange portion surrounding the opening portion of the plastic pack container thereby to seal the pack container;
- and
- a peeling film bonded onto lower surfaces of the inner and outer portions of the flange portion in which the broken portion is formed, the peeling film comprising a peeling-start portion extruding outward or inward of the flange portion, wherein by peeling off the peeling film along the flange portion, the broken portion which separates the flange portion into the inner and outer portions can be exposed, and a bonding power of the seal film with the flange portion located outside of the broken portion is larger than a bonding power of the seal film with the flange portion located inside of the broken portion.
An easy-open container arrangement comprising:
- a container having a wall structure defining an opening;
- a flange connected to said wall structure and being disposed in surrounding relation with said opening, said flange defining a perforation in at least part of said flange such that said flange is separable at said part into an outer flange portion disposed adjacent an outer periphery of said flange and an inner flange portion disposed adjacent said opening and between said opening and said outer flange portion, said flange having upper and lower surfaces which face away from one another;
- a sealing film bonded to said upper surface of said flange and covering said opening to seal off said container, said sealing film being bonded to both said outer flange portion and said inner flange portion at said upper surface;
- and
- a peeling film bonded to both said inner flange portion and said outer flange portion at said lower surface of said flange, whereby removal of said peeling film from said flange exposes said perforation, said sealing film being bonded to said outer flange portion with a bond strength which is greater than a bond strength between said sealing film and said inner flange portion such that said outer flange portion and said sealing film are removed together from said container to open same after removal of said peeling film from said flange.
Dependencies are inferred from the claim text.