Tear tape
First Claim
1. The method of making a multilayer tear tape material comprising coextruding a layer comprising thermoplastic resin material and an outer layer comprising adhesive.
1 Assignment
0 Petitions
Accused Products
Abstract
A coextruded elongated tear tape comprises at least one layer of thermoplastic resin material monoaxially oriented in the longitudinal direction of the tape and a layer comprising adhesive. The method of making material for the tear tape comprises coextruding the layers. Apparatus for sealing tear tape to packaging material comprises an ultrasonic transducer and an anvil roll, the anvil roll having indicia representative of information formed in relief on the surface thereof and aligned with the path of the tear tape for embossing the indicia thereon. The embossing method comprises passing tape and thermoplastic resin packaging over the anvil roll and heating them to seal the tape to the packaging and to deform them into the indicia.
37 Citations
21 Claims
- 1. The method of making a multilayer tear tape material comprising coextruding a layer comprising thermoplastic resin material and an outer layer comprising adhesive.
- 16. Ultrasonic sealing apparatus for bonding a thermoplastic resin tear tape to thermoplastic resin packaging material and for embossing indicia thereon comprising an ultrasonic transducer and an anvil roll rotatably mounted in close proximity to the transducer in which the roll has indicia representative of information formed in relief in the surface of the roll, the indicia aligned with the path of the tear tape as it is to be moved with the packaging between the transducer and the roll, whereby operation of the transducer heats the tape and packaging to bond together and to deform into and to be embossed with the indicia.
- 20. The method of embossing indicia on thermoplastic resin tear tape as it is adhered to thermoplastic resin packaging material comprising the steps of passing the tape and the packaging material over an anvil roll having indicia representative of information formed in relief in the surface of the roll, heating the tape and packaging material and thereby sealing the tape to the packaging material and causing the tape and packaging material to deform into the indicia, thereby embossing the indicia onto the tape.
Specification