초록 ▼

An aperture forming structure, which when attached to or integrally formed in dispenser packages for flowable substances allows reclosure and single or multiple uses. The aperture forming structure includes a break away tip member of thermoformable plastic. The break away tip includes a hollow protr

An aperture forming structure, which when attached to or integrally formed in dispenser packages for flowable substances allows reclosure and single or multiple uses. The aperture forming structure includes a break away tip member of thermoformable plastic. The break away tip includes a hollow protrusion from a surface. The intersection of the hollow protrusion and the surface is a fault line. Rupturing of the fault line creates an aperture from which the contents of the dispenser package may exit. A cap may be integrally formed with the aperture forming structure and detached for protecting the hollow protrusion or for closing the aperture created when the fault line is ruptured. The aperture forming structure can be made by heating a relatively stiff substantially flat thermoformable sheet of and then stretching the sheet to create a first and a second hollow protrusion in a tiered configuration. A rupture line is placed at the intersection of the first and the second protrusions. The sheet may be attached to a pouch or containment member formed from a flexible sheet which contains any flowable substance. The disclosed opening and closure concepts are especially effective when used on a tetrahedral-shaped tube. Several dispenser packages include a sealed dispensing container with an easy opening aperture forming structure entirely made from a single sheet of plastic, which is reclosable after a single use by use of an integral formation.

대표청구항 ▼

An aperture forming structure, which when attached to or integrally formed in dispenser packages for flowable substances allows reclosure and single or multiple uses. The aperture forming structure includes a break away tip member of thermoformable plastic. The break away tip includes a hollow protr

An aperture forming structure, which when attached to or integrally formed in dispenser packages for flowable substances allows reclosure and single or multiple uses. The aperture forming structure includes a break away tip member of thermoformable plastic. The break away tip includes a hollow protrusion from a surface. The intersection of the hollow protrusion and the surface is a fault line. Rupturing of the fault line creates an aperture from which the contents of the dispenser package may exit. A cap may be integrally formed with the aperture forming structure and detached for protecting the hollow protrusion or for closing the aperture created when the fault line is ruptured. The aperture forming structure can be made by heating a relatively stiff substantially flat thermoformable sheet of and then stretching the sheet to create a first and a second hollow protrusion in a tiered configuration. A rupture line is placed at the intersection of the first and the second protrusions. The sheet may be attached to a pouch or containment member formed from a flexible sheet which contains any flowable substance. The disclosed opening and closure concepts are especially effective when used on a tetrahedral-shaped tube. Several dispenser packages include a sealed dispensing container with an easy opening aperture forming structure entirely made from a single sheet of plastic, which is reclosable after a single use by use of an integral formation. e and closely spaced from said pole faces, said armature having a preset rotational mis-alignment to said core. 6. The parts feeder according to claim 5, wherein said baseplate comprises a circular perimeter. 7. The parts feeder according to claim 5, comprising a plurality of counterweights, each counterweight having a shape of a segment of a ring, said counterweights attached to said baseplate. 8. The parts feeder according to claim 5, wherein said armature comprises an armature core having at least two armature pole faces, said at least two armature pole faces closely spaced from said pole faces of said electromagnet, and a winding surrounding said armature core. 9. The parts feeder according to claim 5, wherein said armature comprises a permanent magnet having poles arranged adjacent to respective pole faces of said electromagnet in order to be periodically attracted by said electromagnet. 10. The parts feeder according to claim 5, wherein said isolators comprise threaded height adjusters, said height adjusters including tool-engageable ends exposed on a top side of said baseplate. 11. The parts feeder according to claim 5, wherein said baseplate comprises a circular perimeter and a plurality of counterweights, each counterweight having a shape of a segment of a ring, said counterweights attached to said baseplate, the ring having an outside diameter equal to said circular perimeter.