An improved membrane-type end closure member for composite containers or the like is disclosed, characterized in that the end closure member is deformed to define an annular deformation of generally V-shaped or flat bottom transverse cross-section, which deformation extends partially within the end
An improved membrane-type end closure member for composite containers or the like is disclosed, characterized in that the end closure member is deformed to define an annular deformation of generally V-shaped or flat bottom transverse cross-section, which deformation extends partially within the end of the container when the end closure member is bonded to the open upper end of the container body. The annular deformation, which is arranged between the annular flange portion that is bonded to the end extremity of the container and a central circular disk portion of the end closure member, serves to reinforce the relatively thin flexible membrane member and flexes or "domes" in response to variations in internal pressure of the container to maintain the container in a closed condition.
대표청구항▼
1. A container including a membrane-type closure member, comprising: (a) a tubular container member which is open at its upper end; and (b) end closure means closing said container upper end, said end closure means including a horizontal generally resilient peelable membrane-type closure member
1. A container including a membrane-type closure member, comprising: (a) a tubular container member which is open at its upper end; and (b) end closure means closing said container upper end, said end closure means including a horizontal generally resilient peelable membrane-type closure member formed from a sheet of relatively thin flexible material, said closure member including (1) an annular flange portion bonded to the upper extremity of said container upper end; (2) a horizontal circular central disk portion; and (3) an annular downwardly deformed trough portion connected between the peripheral edge of said disk portion and the inner peripheral edge of said annular portion, said trough portion having a downwardly and inwardly converging outer side wall, the diameter of the lowermost extremity of said outer side wall being less than the internal diameter of said container member, thereby to cause the lower portion of said outer side wall to be spaced inwardly from the inner wall surface of said container member, whereby said annular deformed trough portion assists in aligning the members during the assembly thereof, and also affords a limited degree of flexure permitting vertical displacement of said central disk portion relative to said annular flange portion when said membrane-type closure member is bonded to said container upper end, and further structurally reinforces said membrane-type closure member to improve the peeling operation of said peripheral flange portion from said container upper end and to preclude tearing of said membrane-type closure while peeling and the integrity of said closure member is maintained. 2. A container as defined in claim 1, wherein said end closure member is formed of an impervious material, said closure member being hermetically bonded to the upper end of said container. 3. A container as defined in claim 1, wherein said container member comprises a composite container body including a fibrous body wall layer and an inner liner layer, the upper end of said container body being reversely curled outwardly; and further wherein the cross-sectional configuration of said closure member flange portion is curved to conform with the outer surface of said reversely curled end of said container member. 4. A container as defined in claim 3, wherein said end closure member includes a layer of metal and means for bonding said closure member to said container member. 5. A container as defined in claim 3, wherein said end closure member includes a layer of synthetic plastic material bonded to said container member. 6. A container as defined in claim 3, wherein said end closure member includes a layer of fibrous material, and further including adhesive means bonding said end closure member to said container member. 7. A container as defined in claim 3, wherein said end closure member further includes a pull tab portion connected with the outer peripheral edge of said annular flange portion. 8. A container as defined in claim 3, wherein said central disk portion has a lower elevation than said annular flange portion, whereby when a protective overcap is mounted on the container upper end, a space is defined between the lower surface of the overcap and the central disk portion to permit upward vertical movement of the central disk portion to increase the effective volume of the container. 9. A contaner as defined in claim 1, wherein said trough portion has in transverse cross-section a generally V-shaped configuration. 10. A container as defined in claim 1, wherein said trough portion has in transverse cross-section a generally flat, horizontal bottom wall connected with the lower edge of said outer side wall, and a generally vertical inner side wall. 11. A membrane-type end closure member for use with composite containers and the like, said closure member being formed from a sheet of thin peelable membrane type lexible material and including (a) an annular flange portion adapted to be bonded to the open upper end of the container; (b) a generally horizontal circular central disk portion; and (c) an annular deformed trough portion connected between said central disk and flange portions, said deformed trough portion including a downwardly converging outer wall, whereby said trough portion strengthens said membrane-type closure and provides axial displacement of said disk portion and structurally reinforces said membrane-type closure member and improves the peelability of flange from said container without tearing said membrane-type closure thereby maintaining the integrity thereof. 12. Apparatus as defined in claim 11, wherein said trough portion has in transverse cross-section a generally V-shaped configuration. 13. Apparatus as defined in claim 11, wherein said trough portion includes in transverse cross-section a generally horizontal flat bottom wall portion, and a generally vertical inner wall portion.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (8)
Chang Henry M. (Bronx NY), Closable food container body and utensil enclosing cover assembly.
Baird-Smith, Ian; Ziegler, Andreas; Geisler, Reinhart; Hammon, Werner, Apparatus and method for closing off the open end of a container with a removable flexible membrane covered by a rigid cap.
Drummond Michael T. ; Williams Alan D. ; Osman Rick A. ; Gentile Michael ; Krishnaraj Varadarajan, Container with heat seal surface having a substantially planar portion.
James W. Lowry ; Manson Drew Case ; Kenan J. Clougherty, Multi-ply composite container with regions of weakened strength and method for manufacturing same.
Lowry, James W.; Case, Manson Drew; Clougherty, Kenan J., Multi-ply composite container with regions of weakened strength and method for manufacturing same.
Drummond Michael T. ; Williams Alan D. ; Boatwright Floyd H. ; Schuetz Jeffrey M., Tubular container with a heat seal having non-symmetrical inner and outer beads.
Drummond, Michael T.; Williams, Alan D.; Boatwright, Floyd H.; Schuetz, Jeffrey M., Tubular container with a heat seal having non-symmetrical inner and outer beads.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.