초록

A refrigeration unit assembly includes: a compressor, and a condenser oriented in a wrap-around relationship with said compressor.

대표청구항 ▼

A refrigeration unit assembly includes: a compressor, and a condenser oriented in a wrap-around relationship with said compressor. and partially retracting the male die includes the sequential steps of, a) partially closing the interlock forming heated dies to begin formation of the inwardly slop

A refrigeration unit assembly includes: a compressor, and a condenser oriented in a wrap-around relationship with said compressor. and partially retracting the male die includes the sequential steps of, a) partially closing the interlock forming heated dies to begin formation of the inwardly sloping bottom surfaces of the arrowhead shaped interlock seal but not closed sufficiently to clamp the male die, b) partially withdrawing the male die so that the male die is out from between the interlock forming heated dies, c) completely closing the interlock forming heated dies to continue formation of the inturned base of the arrowhead shape of the reclosable seal, and d) moving the female die toward the male die to set the arrowhead shape of the interlock seal between the female die and the interlock forming heated dies. 4. The method of making a resealable package having a reclosable interlocking seal as set forth in claim 1 including the further steps of, a) heat sealing the package completely transversely across its width above the reclosable seal, b) cutting through the heat seal transversely to the package width to form a package top heat seal and a bottom heat seal for the next package to be formed, and wherein when the male and female dies are fully retracted to their initial positions, the interlock forming dies remain in their closed position so that the package is carried laterally outward with the female die away from the male die, the dies retraction following the heat sealing and cutting steps. 5. Apparatus for making a gusseted package having an arrowhead shaped a reclosable interlocking seal including interfitting male and female parts and snap detents, and end seals at opposite ends of the package, comprising in combination, a) means for transporting in lengthwise direction a web of flexible packaging material of selected width and indeterminate length having thermoformable strips of a length substantially greater than the strips width, said strips being affixed to the web with the strips lengths oriented transversely to the running length of the film at package length intervals, b) a pair of spaced apart heated interfitting male and female dies for partly forming the inner and outer separable portions of the reclosable interlocking seal with the inner portion fitted within the outer portion, said dies respectively having an inner male projection and a complementally shaped female recess, c) a forming collar and means for moving the film over said forming collar and around a cylindrical forming tube and forming a longitudinally sealed cylindrical tube of packaging film with the thermoformable strips inside the film tube and with the surfaces of the strips not secured to the film being in facing relationship within the tube, d) gusset forming tooling for forming a pair of opposite side gussets in said cylindrical tube, said film moving means being effective to move the portion of the gusseted tube within which the strips are disposed into position between said pair of spaced apart heated male and female dies, e) male and female dies moving means effective when actuated in a first way for moving said male and female dies toward one another to press the faces of the strips not secured to the film against one another to form two apposed strips faces extending at least partly across the film tube, and effective for continuing to move said dies toward one another into mating position and forming the central part of the strips extending across the film tube into the recess of said female die to form the tip of an arrowhead shape of the reclosable interlocking seal, said male and female dies moving means when actuated in a second way being effective to partially retract said male die, and being effective when actuated in a third way to fully retract said male and female dies to their initial positions, f) a pair of spaced apart interlocking seal completing heated dies disposed at opposite sides of said female die and having open and closed positions, said interlocking seal completing dies being effective when closed to press portio