U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Bag and package making method

Patent 3939628 Issued on February 24, 1976. Estimated Expiration Date: Icon_subject February 24, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2490940

2978852

3257915

3269087

3297509

3389533

3447990

3540184

3710541

3726060

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Inventor

Application

No. 492227 filed on 07/26/1974

US Classes:

53/397, Applying a partial cover156/269, Of continuous or running length bonded web156/290, Bonding of facing continuously contacting laminae at spaced points only226/118.1, And intermediate storage26/80, Tubular-fabric-enclosed spreader26/84, Driven493/210, Assembling of distinct members493/239, Severing of container or container blank from web53/136.5, Bag53/374.4, Closing means comprising roller or roller-like member53/415, Strip, stamp, nonencircling label, or space filler53/459, Bag, tube, center-folded web53/567Flexible tubular stock - preformed continuous tube

Examiners

Primary: McGehee, Travis S.
Assistant: Culver, Horace M.

Abstract

A method is provided of making a bag including the steps of:Expanding tubular plastic netting in continuous rope form into an elongated sleeve with an open end;Positioning a first bottom closure strip across a first part of such sleeve;Positioning a second bottom closure strip across a second part of such sleeve and aligned with such first strip;At least one of the strips having an adhesive coating on its inner surface and such strips being arranged to extend substantially from one edge of the sleeve to the other edge; and,Adhering the first and second strips together through open meshes of such netting thereby to form a bag having a closed end and an open end.In forming a closure for such a bag the method preferably includes the steps of:Expanding such tubular netting in the cross-machine direction;Gathering such expanded netting in rucked form;Expanding a portion of such rucked netting in the machine direction into an elongated sleeve; andApplying closure members across such sleeve thereby forming a closure for the bag.A method also is provided of making a package using a bag as described above including the further steps of:Severing the sleeve adjacent to the closure to make a bag;Inserting an article or articles into the open end of the bag; andClosing the open end of the open end of such bag to form such package.

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