Packaging spool and process for producing same
OwnerLawrence M. Ridgeway, Jr., James M. Leeinventors
Life of this patent
Estimating the term…
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.
Claims33
A reel around which a product is wound for transportation and storage, comprising:
- a first sidewall;
- a second sidewall;
- a partition located between said first sidewall and said second sidewall, with one end of said partition being positioned adjacent to said first sidewall, and an opposite end of said partition being positioned adjacent to said second sidewall, said partition having an interior void which is filled with a flowable material, wherein said flowable material sets within said partition to form a solid core, and said flowable material sets and adheres to said first sidewall and to said second sidewall and connects said first sidewall to said second sidewall, wherein an entire perimeter of said first sidewall extends beyond an outside perimeter of said solid core,
- wherein said first sidewall and said second sidewall are formed of a material other than said flowable material.
A reel around which a product is wound for transportation and storage, comprising:
- a first sidewall;
- a second sidewall;
- a partition located between said first sidewall and said second sidewall, with one end of said partition being positioned adjacent to said first sidewall, and an opposite end of said partition being positioned adjacent to said second sidewall, said partition having an interior void into which a flowable and expandable material is placed, wherein said flowable and expandable material expands and sets within said partition to fill said interior void and form a solid core, and said flowable and expandable material sets and adheres to said first sidewall and to said second sidewall and connects said first sidewall to said second sidewall, wherein an entire perimeter of said first sidewall extends beyond an outside perimeter of said solid core,
- wherein said first sidewall and said second sidewall are formed of a material other than said flowable and expandable material.
Dependencies are inferred from the claim text.