초록 ▼

An apparatus and method for welding or thermally bonding parts of thermoplastic material by subjecting a die to high frequency electromagnetic radiation to effect heating thereof and heating of thermoplastic parts in contact with the heated die. The die is continuously cooled to permit rapid cooling

An apparatus and method for welding or thermally bonding parts of thermoplastic material by subjecting a die to high frequency electromagnetic radiation to effect heating thereof and heating of thermoplastic parts in contact with the heated die. The die is continuously cooled to permit rapid cooling thereof and of the parts in contact therewith upon deenergization of the source to reduce cycle time and facilitate automated production techniques using a single source and multiple die stations successively exposed to the source for heating and being rapidly cooled thereafter due to the continuous cooling thereof.

대표청구항 ▼

A method of heating a part of thermoplastic material comprising the steps of: positioning a die made of a material that is heated in response to high frequency electromagnetic radiation in thermal contact with the part; exposing said die to high frequency electromagnetic radiation to effect heating

A method of heating a part of thermoplastic material comprising the steps of: positioning a die made of a material that is heated in response to high frequency electromagnetic radiation in thermal contact with the part; exposing said die to high frequency electromagnetic radiation to effect heating of the die and of the part in said thermal contact therewith; continuously cooling the heated die while it is in thermal contact with the heated part to cool both the heated die and the heated part in thermal contact therewith; and simultaneously exposing said die to sufficient electromagnetic radiation to effect said heating of said die and the part.