Abstract A reclosable container having a removable top closure mechanically joined to the container body to carry the structural loads of container and contents, the mechanical joint being cylindrical and connected and disconnected by rotation of the top closure and the container body relative to each other. The ultimate seal during the shelf-life between filling and initial opening of the container is effected by a rupturable band adhered over the joint, said band in the locus of the joint line having a strength in shear less than its adhesive bond to the container closure and body adjacent the joint line. The closure and body are preferably recessed adjacent the joint line to receive the band. The band is preferably endless and formed in situ by application of band material in liquid condition; a repellent or adhesion inhibiter (preferably an immiscible liquid) may be located in or over the joint line to exclude entrance of the band material into the joint and provide an equatorial area of weakness for rupture of the sealing band.
A method of sealing a container comprised of a body having a mouth portion with a substantially circular edge and closed by a closure interfitting said mouth portion to provide a circular outer joint line comprising the steps of locating a sealing band over said joint line and circumferential areas of said closure and said mouth portion adjacent said joint line and adhering said band to said marginal circumferential areas with adhesive bonds stronger than the shear strength of said band while avoiding such adhesion of a medial portion of said band at said joint line.
Claim 2
Independent Claim
96 words
A method of sealing a container comprised of a body having a mouth portion with a substantially circular edge and closed by a closure interfitting said mouth portion to provide a circular outer joint line comprising the steps of locating a sealing band over said joint line and circumferential areas of said closure and said mouth portion adjacent said joint line and adhering said band to said marginal circumferential areas with adhesive bonds stronger than the shear strength of said band while avoiding such adhesion of a medial portion of said band at said joint line.
Claim 3
Dependent Claim
34 words
A method as defined in claim 1 including the step of filling said joint line with a repellant to adhesion to said sealing band prior to locating said sealing band over said joint line.
Claim 4
Dependent Claim
55 words
A method as defined in claim 2 including the step of forming said sealing band in situ by applying a polymeric resinous liquid coating over said joint and adjacent marginal circumferential areas and curing said coating to a solid condition to adhere the same to said circumferential areas but without adhesion at said joint line.
Claim 5
Dependent Claim
39 words
A method as defined in claim 3 including the step of reinforcing said sealing band with an overlying band of flexible but relatively inelastic sheet material of the class consisting of metal foil, organic film, paper, and laminates thereof.
Claim 6
Dependent Claim
56 words
A method as defined in claim 1 in which said sealing band is comprised of a strip of flexible sheet material of the class consisting of metal foil, organic film, paper, and laminates thereof and including the step of joining the ends of said strip with a transverse overlapped seam to form and locate said band.
Claim 7
Dependent Claim
50 words
A method as defined in claim 5 including the step of first folding marginal portions of said strip toward the longitudinal center thereof and joining the same to the unfolded portion of said strip to provide a strip having marginal portions of greater shear strength than the medial portion thereof.