公开(公告)号：WO2019055907A1

公开(公告)日：2019-03-21

申请号：PCT/US2018/051320

申请日：2018-09-17

Applicant: DUKANE IAS, LLC

Inventor： CATHCART, Paul, H.

IPC: B29C65/14 ,  B29K101/12

Abstract: An infrared welding system for joining two parts (PI, P2) made of thermoplastic material comprises a pair of infrared heaters (11, 11) for heating the two parts (PI, P2) while spaced from each other; and energizing the infrared heaters (11, 11) to emit infrared heat and directing the emitted infrared heat onto selected portions (Pla, P2a) of the opposed surfaces of the parts (PI, P2) to melt at least portions of the opposed surfaces, while directing an inert gas onto the selected portions to prevent ignition of the melted thermoplastic material. The two parts (PI, P2) are clamped together by moving at least one of the parts toward the other part to press the melted surfaces of the parts (PI, P2) into contact with each other. The parts (PI, P2) are cooled while they remain clamped together to solidify the molten thermoplastic material and thus weld the two parts (PI, P2) together.

公开(公告)号：WO2018102211A1

公开(公告)日：2018-06-07

申请号：PCT/US2017/062975

申请日：2017-11-22

Applicant: DUKANE IAS, LLC

Inventor： CATHCART, Paul, H.

IPC: B29C65/14 ,  B29C65/78 ,  B29C65/80

CPC classification number: B29C65/40 ,  B29C65/1432 ,  B29C65/1464 ,  B29C65/7847 ,  B29C65/7885 ,  B29C65/82 ,  B29C66/3494 ,  B29C66/54 ,  B29C66/81423 ,  B29C66/81431 ,  B29C66/8246 ,  B29C66/8322 ,  B29C66/8432

Abstract: A rotary hot plate welding system joins portions of two parts made of thermoplastic material by inserting the two parts into a clamping mechanism with the two parts spaced from each other. The clamping mechanism is mounted on a turntable that is rotatable around an axis that is parallel to the direction of movement of the parts when they are moved to clamp them together. By indexing the turntable, the two parts are moved into alignment with at least one stationary heated plate extending between the two parts to be joined, to melt the opposed surfaces of the two parts. The turntable is then indexed to a station where the melted surfaces of the two parts are clamped together to press the melted surfaces into direct contact with each other. The two parts are cooled while they remain clamped together, in direct contact with each other.

公开(公告)号：WO2020010129A1

公开(公告)日：2020-01-09

申请号：PCT/US2019/040380

申请日：2019-07-02

Applicant: DUKANE IAS, LLC

Inventor： SAVITSKI, Alexander ,  CATHCART, Paul, H. ,  BUGAJ, Grzegorz, Zdzislaw

IPC: B29C65/16 ,  B29C65/78 ,  B29K27/06 ,  B29K101/12

Abstract: A laser welding system is directed to simultaneously joining respective layers of a first bag and a second bag. The system includes a first film layer (501) adjacent to a second film layer (502) for forming the first bag, and a third film layer (503) adjacent to a fourth film layer (504) for forming the second bag, each layer of the plurality of film layers (501, 502, 503, 504) being made of a thermoplastic material that absorbs laser radiation having a wavelength of about 2 microns. A non-absorbing carrier film layer (505) is positioned between the second film layer (502) and the third film layer (503), the non-absorbing carrier film layer (505) being made of a material that transmits substantially all energy of the laser radiation. A laser source applies the laser radiation toward portions of the plurality of film layers (501, 502, 503, 504) to be joined, forming the first bag generally simultaneously with the second bag. Another laser welding system is disclosed for joining first and second thermoplastic workpieces (110, 111), and including a first clamping structure (113) being composed of a material having a non-flat surface (119). A laser source applies laser radiation having a wavelength of 2 microns toward the workpieces (110, 111) to be joined, while they are clamped together, to melt irradiated portions of the workpieces (110, 111) to one another. The first clamping structure (113) transmits substantially all of the energy of the laser radiation through the material.

公开(公告)号：WO2018071213A1

公开(公告)日：2018-04-19

申请号：PCT/US2017/054684

申请日：2017-10-01

Applicant: DUKANE IAS, LLC

Inventor： SAVITSKI, Alexander ,  CATHCART, Paul, H. ,  KLINSTEIN, Leo

IPC: B29C65/16 ,  B29K101/12

Abstract: A laser welding method and system join portions of two workpieces (20, 21) of thermoplastic material by clamping together the portions of the workpieces (20, 21) to be joined, against a baseplate (23) engraved or etched to form an image to be replicated in the joined portions of the workpieces (20, 21), and applying laser radiation to the portions of the clamped workpieces (20, 21) to be joined, to melt those portions of the clamped workpieces (20, 21) to be joined and to replicate the image in the joined portions of the clamped workpieces (20, 21) when the material solidifies. The thermoplastic material of the workpieces (20, 21) can be optically transparent but absorbs a portion of the laser radiation, so that both workpieces (20, 21) are heated and melted by the laser radiation. A portion of the melted workpiece material flows into the engraved or etched portions of the baseplate (23), forming an embossed surface on the lower surface of the area where the workpieces (20, 21) are joined.

Abstract translation: 激光焊接方法和系统通过将待接合的工件（20,21）的部分夹紧在基板（23）上将热塑性材料的两个工件（20,21）的部分接合在一起， 刻蚀或蚀刻以在工件（20,21）的接合部分中形成待复制的图像，并且将激光辐射施加到待接合的被夹紧的工件（20,21）的部分上，从而熔化被夹紧的工件 工件（20,21）被接合，并且在材料固化时在被夹紧的工件（20,21）的接合部分中复制图像。 工件（20,21）的热塑性材料可以是光学透明的，但吸收一部分激光辐射，使得两个工件（20,21）都被激光辐射加热并熔化。 一部分熔化的工件材料流入底板（23）的雕刻或蚀刻部分，在工件（20,21）连接区域的下表面上形成压花表面。