For Injection Molding

STANDARD THERMAL PIN heat conductor

For Blow Molding

Hollow Thermal Pin heat conductor

For Rotational Molding

Finned Thermal Pin heat conductor

For Die Casting

COOL MOLDS FAST TO REDUCE CYCLE TIME

Noren THERMAL PIN heat conductors transfer higher amounts of thermal energy, which always transfers heat to the cooler end.

• In small cores, you can cool to a water channel in areas that had previously been inaccessible to water cooling.
• In solid cores, you can draw heat from the plastic to the mold base or to remote water channels. Most pay for themselves in 4 to 12 weeks.

In blow molding, the hollow THERMAL PIN heat conductor uniformly cools the end of the blow pin. Hollow THERMAL PIN heat conductors evenly cool the necks of blow molded bottles. (Ask us for literature on blow molding and other applications.)

In your mold cooling applications, see our THERMAL PIN heat conductor DESIGN GUIDE web page to see if you can reduce your cycle time.

LEVEL HOT SPOTS TO IMPROVE PART QUALITY

Noren THERMAL PIN heat conductors are virtually isothermal, not only do they transfer heat fast, they do it evenly. They eliminate hot spots which cause sink marks, pulling, and spotting.

REMOTE COOLING TO FIX DAMAGED MOLDS

THERMAL PIN heat conductors transfer heat to coolant. You can now isolate the coolant from mold components which have problems with seepage or leaks, as illustrated.

ELIMINATE SCALE AND PLUGGING

Scale often plugs up the small diameter water channels going into the core. Scale reduces heat transfer by 5 times. And scale reduction additives reduce water's heat transfer by up to 30%.

ELIMINATE WATER LINES TO REDUCE TOOLING COSTS WITH DESIGN FLEXIBILITY

A bubbler requires two sets of water lines and threads. THERMAL PIN heat conductors need only one water line, which also improves flow rate.

TRANSFER HEAT WHERE YOU NEED IT TO REDUCE CYCLE TIME ON THERMOSETS

For example, finned THERMAL PIN heat conductors transfer heat into rotational molds to heat the plastic more quickly and more evenly, regardless of variations in-mold thickness.

The THERMAL PIN Heat Conductor is not an Ordinary Heat Pipe

Noren Products, Inc., has taken heat pipe concepts and adapted them to cool plastic molds. Traditionally, heat pipes have been used to transfer a steady heat load. More than two decades ago, we designed THERMAL PIN heat conductors (TPhc's™) to function under cyclic heat loads like those encountered in injection molding, blow molding and other plastics processing. The modifications we made are, of course, proprietary.

How does a TPhc work?

The TPhc has a wick and a working fluid enclosed in a thin copper shell, as shown below. As heat is applied to one end of the TPhc (the evaporator end), the fluid vaporizes and then travels to the other end (the condenser end). As the vapor condenses, it gives up its latent heat. Finally, condensed fluid travels by capillary action along the wick back to the evaporator end.

The TPhc operates with virtually no temperature change from end to end. It can therefore transfer over 1000 times more heat than a copper rod of equal size or weight.

Because the TPhc transfers heat to the coolant (or heat sink, such as the mold base), TPhc's cool areas that are inaccessible to conventional water cooling because of the size of the part produced, mold design or water leakage.

Free Design Review:

Our engineers will assist you in finding the best solutions using TPhc's We will review your drawings and give you our recommendations FREE OF CHARGE.

To Order:

Refer to our size list and call for a quote. The size list includes only stock and standard sizes. Other sizes and types of TPhc's are available.