blow pressure

[′blō ‚presh·ər]

(engineering)

Air pressure required for plastics blow molding.

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blowing pressure

References in periodicals archive ?

* Pre-Blow Pressure Too Early and/or Too High: As the stretch rod descends, pressure lower than the final blow pressure is activated to prevent the preform from collapsing and to impart a desired wall thickness to various regions of the bottle.

Solving the Bane of Stretch-Blow Molding: Off-Center Gates: There are many reasons why off-center gates happen, and processors should be aware of all of them to quickly find the ones causing the problem

Other processing parameters, namely the magnitude of the blow pressure, the timing of the blow relative to the stretch rod motion, and stretch rod speed, were also studied to improve the simulation predictions of the bottle wall thickness.

Experimental study of preform reheat temperature in two-stage injection stretch blow molding

The optimal conditions are rear temperature of 320 (degrees)F, front temperature of 300 (degrees)F, block temperature of 300 (degrees)F, injection pressure of 1000 psi, blow pressure of 60 psi, mold temperature of 120 (degrees)F, and mold close time of 60 seconds.

PHA biodegradable blow-molded bottles: compounding and performance

Although smaller radii can be machined into a mold, the resultant radii formed on the blow molded article will probably be about 0.25 to 0.30 mm (0.01 to 0.012 in.), depending on the processing conditions, such as blow pressure, melt temperature, mold temperature, etc.

General design guidelines for blow molding

Blow pressure and humidity had only a small effect on shrinkage.

Explaining shrinkage: a series of tests show how each variable in chemically bonded molds affects shrinkage

Some newer developments include improved infrared heating techniques for reheat blow molding; very high speed rotary extrusion presses, particularly for the milk container industry; mold indexing on shuttle presses to allow for offset spout formation; multilayer continuous extrusion blow molding for barrier containers; and the continuous production of heat-set PET bottles by carefully controlling orientation crystallization and thermal crystallization, preform and mold temperature, and blow pressure and residence time in the mold.

Plastics processing technology: opportunities for the next decade in blow molding

Blow pressure utilized is a function of part size and parison wall thickness.

Blow molding of melt processible rubber

When the rod reaches the bottom wall of the container, a high blow pressure is applied inside the preform to reach the final container shape and maximize cooling efficiency.

Preform shape and operating condition optimization for the stretch blow molding process

Loramendi's Advanced Blow System allows for a low blow pressure, which results in reduced air consumption, less tooling wear and improved core density.

Showcasing technology advancements at CastExpo '05: this summary of recent innovations showcased at CastExpo '05 provides metalcasters a brief overview of what was new on the show floor in St. Louis

The results for Group X show that both a higher blow pressure and a higher mold temperature produced higher gloss.

Blow molding: enhancing the surfaces of parts blow molded of engineering plastics

Engineers have hooked up compressors to conduct cooling and blow pressure experiments.

The struggle to make Q-1: a custom molder's story

A less-than-optimum venting pattern was used so that a highly flowable sand would fill the box at a given blow pressure, but a less flowable sand would not.