Apparatus and method for forming inflated articles
AssigneeSealed Air Corporation
InventorsLaurence B. Sperry, Eric A. Kane, Brian A. Murch, Ross Patterson
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Abstract
An apparatus for making inflated articles from a film web having two juxtaposed film plies. One version of the apparatus generally includes a first rotary sealing device for producing transverse seals that bond the film plies together, an inflation assembly for directing gas between the film plies, and a second rotary sealing device for producing a longitudinal seal between the film plies. The longitudinal seal intersects the transverse seals so that the gas is enclosed between the longitudinal seal, transverse seals, and film plies to thereby form an inflated article.
Claims21
An apparatus for making inflated articles from a film web having two juxtaposed film plies, comprising:
- a. a first rotary sealing device for producing transverse seals that bond the film plies together;
- b. an inflation assembly for directing gas between said film plies;
- and
- c. a second rotary sealing device for producing a discontinuous series of longitudinal seals between said film plies, said first and second rotary sealing devices being synchronized such that each longitudinal seal intersects a pair of said transverse seals,
- whereby, gas is enclosed between said longitudinal seals, transverse seals, and film plies to thereby form an inflated article.
A method for making inflated articles from a film web having two juxtaposed film plies, comprising:
- a. producing transverse seals with a first rotary sealing device, said transverse seals bonding the film plies together;
- b. directing gas between said film plies;
- and
- c. producing a discontinuous series of longitudinal seals between said film plies with a second rotary sealing device, said first and second rotary sealing devices being synchronized such that each longitudinal seal intersects a pair of said transverse seals,
- whereby, gas is enclosed between said longitudinal seal seals, transverse seals, and film plies to thereby form an inflated article.
Dependencies are inferred from the claim text.