Packaging spool and process for producing same

Details Packaging spool and process for producing same Packaging spool and process for producing same

2008-05-13

2008-05-13

Nguyen, John Q. (Department: 3654)

Winding, tensioning, or guiding

Coil holder or support

Spool or core

C242S610400, C242S610600, C264S046500, C264S046900, C264S262000

Reexamination Certificate

active

07370827

ABSTRACT:
A reel or spool package has opposing sidewalls or flanges formed of the specified or appropriate substrate and connected by a core formed of a flowable material which sets or cures to harden, such as a two part expandable polyurethane foam. The foam is applied into a partition, which may be a paper ring, by an injection and metering device. The chemistry of the flowable material may be altered to change density, rigidity and flexibility as required by package stresses. The polyurethane foam is an effective adhesive medium, thereby forming the core and connecting the sidewalls to form the package.

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