Fortex, Inc.

Design Technology

Bc Research and Development, Inc.

John K Fortin

Mark A Beran

A method for producing open-ended biaxially oriented containers includes forming a biaxially oriented intermediate by blow forming, without plug assist, a sheet of unoriented thermoplastic material into a forming tube to a depth of draw sufficient for full orientation of the side walls. The blow formed intermediate is placed on a male form a predetermined size, shape, and texture. The intermediate is heated above the orientation temperature of the thermoplastic material to heat shrink the intermediate onto the surface of the male form. The formed container is then removed from the male form.

Method for producing a biaxially oriented open ended container

A method for producing open-ended biaxially oriented containers includes forming a biaxially oriented intermediate by blow forming, without plug assist, a sheet of unoriented thermoplastic material into a forming tube to a depth of draw sufficient for full orientation of the side walls. During blow forming the thermoplastic material is prevented from sticking to the side walls of the forming tube. The blow formed intermediate is placed on a male form a predetermined size, shape and texture. The intermediate is heated above the orientation temperature of the thermoplastic material to heat shrink the intermediate onto the surface of the male form. The formed container is then removed from the male form.

Method for producing a biaxially oriented open-ended container

Thermoforming and heat shrinking for forming containers

Methods for the formation of biaxially oriented thermoplastic articles having flat surfaces or sharp contours, along with the articles themselves. Such methods relate to blow forming a sheet of unoriented thermoplastic material to form biaxially oriented shaped intermediates, followed by the heat-shrinking of the biaxially oriented intermediates onto a male form to produce articles of exacting dimensions and flat surfaces or sharply defined contours. Such thermoplastic articles include autoclavable, hot fillable, heat stable, transparent PET containers.

Method for the manufacture of shaped products of biaxially oriented

Apparatus and methods for the formation of biaxially oriented thermoplastic articles having flat surfaces or sharp contours, and the articles so produced. Such apparatus and methods relate to the heat-shrinking of biaxially oriented intermediates onto male forms to produce articles of exacting dimensions and flat surfaces or sharply defined contours. Such thermoplastic articles include autoclavable, heat fillable, heat stable, transparent PET containers.

Method and apparatus for the manufacture of shaped products of biaxially

Apparatus and methods for the formation of biaxially oriented thermoplastic articles having flat surfaces or sharp contours, along with the articles themselves. Such apparatus and method relate to the heat-shrinking of biaxially oriented intermediates onto male forms to produce articles of exacting dimensions and flat surfaces or sharply defined contours. Such thermoplastic articles include autoclaveable, hot fillable, heat stable, transparent PET containers.

A safety enhanced pivoting door operator is disclosed which includes an apparatus for selective restraint of the swing door to resist movement of the door in a first direction beyond the fully closed position during routine use while yet allowing movement of the door in the first direction beyond the fully closed position when sufficient force is applied to the door in non-routine situations, for example to allow emergency exit or the like. The operator includes a motor and a drive train connected with a rotatable pivot upon which the door is movable. The apparatus includes a mounting member having a deflectable bar connected therewith. A member for impeding movement of the door beyond the fully closed position is connected with the pivot, the impeding member and the deflectable bar coming into contact during normal use to thus resist movement of the door beyond the closed position, but the bar being deflectable by the impeding member to allow such movement when sufficient non-routine force is applied to the door.

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Niwot, CO, United States of America

John K Fortin