Thermally activated adhesive films for the collation of wire staples
AssigneeWorthen Industries
InventorRobert Mahoney
Life of this patent
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Abstract
A thermally activated adhesive for coating and holding a multi-end band wire together through a high volume, high speed banding line which comprises a polyolefin in an amount of 2 to 98% by weight based upon the total weight of the adhesive, an acid in an amount of 1 to 20% by weight based upon the total weight of the adhesive and a rubber polymer in an amount of 1 to 20% by weight based upon the total weight of the adhesive. The adhesive activates in a temperature range of between 200° F. to 500° F. and is characterized in that it has a tensile strength of between 1,500 to 10,000 psi as determined by ASTM D638-96 and a peel strength of between 5 to 10 PLI as determined by ASTM D903-93.
Claims12
A method of coating a multi-end band wire which comprises:
- flattening the band wire;
- heating the band wire to form a pre-heated band wire;
- contacting an adhesive film to the pre-heated band wire;
- activating the adhesive film to form a coated band wire;
- and
- cooling the coated band wire.
A method of coating a multi-end band wire which comprises:
- heating the band wire to a temperature within the range of about 200° F.–500° F. to form a pre-heated band wire;
- laminating an adhesive thermoplastic film selected from the group consisting of polyolefins, polyethylene, polypropylene and copolymers of polyethylene and polypropylene to the pre-heated band wire to form a laminated band wire;
- and
- cooling the laminated band wire.
Dependencies are inferred from the claim text.