The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2003
Filed:
Mar. 15, 2001
Harold M Forman, Pennsburg, PA (US);
Sealstrip Corporation, Boyertown, PA (US);
Abstract
Apparatus for making packages having interlocking closures from a web of film, the closure having male and female portions and being formed in line with or transversely to the direction of film flow. A converter fanfolds the film into spaced apart stacks of heat sealed together layers. Abrading means abrade one surface of each strip to remove the thermoplastic coating. A package former forms packages having longitudinal seals, and places strip portions in apposed position. The package ends are sealed and the locking closure is formed in the strip. The locking closure female portion is formed in the face including the longitudinal seal. In another embodiment the strip inner and outer parts of the resealable closure are separately formed before package formation. Alternatively, layering is done by heat sealing a strip of heat sealable material to the packaging film. Optionally formed in the resealable closure are hinges and reinforcing V-notches.