[특허]Apparatus for making bag assembly

[미국특허] Apparatus for making bag assembly 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B29C-065/04
출원번호	US-0412677 (2012-03-06)
등록번호	US-8573274 (2013-11-05)
발명자 / 주소	Vess, Mark A.
출원인 / 주소	Covidien LP
대리인 / 주소	Mello, Esq., John Paul
인용정보	피인용 횟수 : 0 인용 특허 : 66

초록 ▼

A welding apparatus includes first and second die members opposing one another. The first and second die members include opposing respective first and second perimeter-welding electrodes and opposing respective first and second tube-welding electrodes. The first perimeter-welding electrode and first tube-welding electrode define a first welding surface. The second perimeter-welding electrode and second tube-welding electrode define a second welding surface. A single source of high frequency energy is electrically connected to the perimeter-welding electrodes and to the tube-welding electrodes. Dielectric material is selectively disposed on the first welding surface such that the material is disposed on some but not all the first welding surface for reducing a strength of a high frequency electric field between the first and second perimeter-welding electrodes as compared to a strength of the high frequency electric field between at least a portion of the first and second tube-welding electrodes.

대표청구항 ▼

1. Welding apparatus for use in one-step welding to form a bag assembly comprising a bag and a tube in fluid communication with the bag, the welding apparatus comprising: first and second die members opposing one another and defining a space therebetween for receiving opposing sheets and a tube, the first and second die members including opposing respective first and second perimeter-welding electrodes adapted to weld the sheets together to define a perimeter-weld of the bag and opposing respective first and second tube-welding electrodes adapted to weld the sheets to the tube to define a tube-weld so that the tube is in fluid communication with the bag, the first perimeter-welding electrode and first tube-welding electrode defining a first welding surface, and the second perimeter-welding electrode and second tube-welding electrode defining a second welding surface opposing the first welding surface;a single source of high frequency energy electrically connected to the first and second perimeter-welding electrodes and to the first and second tube-welding electrodes to produce a high frequency electric field between the perimeter-welding electrodes and the tube-welding electrodes; anddielectric material selectively disposed on the first welding surface for reducing the strength of the high frequency electric field between the first and second perimeter-welding electrodes as compared to a strength of the high frequency electric field between at least a portion of the first and second tube-welding electrodes so that the sheets are welded to the tube and the sheets are welded together in a single welding operation, wherein the dielectric material is disposed on an entirety of the first perimeter-welding electrode, the first tube-welding electrode has a pair of planar electrode surfaces and an arcuate electrode surface between the planar electrode surfaces, the dielectric material is disposed directly adjacent the arcuate electrode surface, and the dielectric material is not disposed on the arcuate electrode surface. 2. Welding apparatus as set forth in claim 1 further comprising a second dielectric material selectively disposed on the second welding surface such that the second dielectric material is disposed on some but not all of the second welding surface, the second dielectric material opposing the dielectric material disposed on the first welding surface. 3. Welding apparatus as set forth in claim 2 wherein the second dielectric material is disposed on an entirety of the second perimeter-welding electrode and only a portion of the second tube-welding electrode. 4. Welding apparatus as set forth in claim 2 wherein the second dielectric material on the second tube-welding electrode opposes the dielectric material on the first tube-welding electrode. 5. Welding apparatus as set forth in claim 1 further comprising a stop device for limiting penetration of the first tube-welding electrode and first perimeter-welding electrode into the sheets. 6. Welding apparatus for use in one-step welding to form a bag assembly comprising a bag and a tube in fluid communication with the bag, the welding apparatus comprising: first and second die members opposing one another and defining a space therebetween for receiving opposing sheets and a tube, the first and second die members including opposing respective first and second perimeter-welding electrodes adapted to weld the sheets together to define a perimeter-weld of the bag and opposing respective first and second tube-welding electrodes adapted to weld the sheets to the tube to define a tube-weld so that the tube is in fluid communication with the bag, the first perimeter-welding electrode and first tube-welding electrode defining a first welding surface, and the second perimeter-welding electrode and second tube-welding electrode defining a second welding surface opposing the first welding surface;a single source of high frequency energy electrically connected to the first and second perimeter-welding electrodes and to the first and second tube-welding electrodes to produce a high frequency electric field between the perimeter-welding electrodes and the tube-welding electrodes; anddielectric material selectively disposed on the first and second welding surfaces for reducing the strength of the high frequency electric field between the first and second perimeter-welding electrodes as compared to a strength of the high frequency electric field between at least a portion of the first and second tube-welding electrodes so that the sheets are welded to the tube and the sheets are welded together in a single welding operation, wherein the dielectric material is disposed on an entirety of the first perimeter-welding electrode, the second tube-welding electrode has a pair of planar electrode surfaces and an arcuate electrode surface between the planar electrode surfaces, dielectric material is disposed directly adjacent the arcuate electrode surface, and dielectric material is not disposed on the arcuate electrode surface.

이 특허에 인용된 특허 (66) 인용/피인용 타임라인 분석

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[미국특허] Apparatus for making bag assembly 원문보기

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