[특허]Apparatus for continuous welding or sealing of seams of plastic films

[미국특허] Apparatus for continuous welding or sealing of seams of plastic films 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B32B-031/08 B32B-031/20 B31B-021/60
출원번호	US-0936384 (1986-12-01)
우선권정보	DE-3542256 (1985-11-29)
발명자 / 주소	Heyse Klaus (Bad Soden DEX) Klenk Ludwig (Hallgarten DEX)
출원인 / 주소	Hoechst Aktiengesellschaft (Frankfurt am Main DEX 03)
인용정보	피인용 횟수 : 15 인용 특허 : 0

초록 ▼

A flat film 11 is delivered from a supply roll 12 to a folding device with a tube forming part 17 and is folded into a tube envelope 23. The butt or overlap seam of the folded tube envelope 23 is covered with a sealing strip 14. The folded tube envelope 23 together with the sealing strip 14 is guided between a partial periphery of a sealing drum 2 and an electrically heated heating band 3 and is sealed under heat and pressure applied by the heating band 3. Electrical current is supplied to the endlessly revolving heating band 3 via feed rollers 6 and 7 from a current source 20 connected, via lines 21 and 22, to sliding contacts 8 which rest against the two sides of each feed roller. An endlessly revolving, cooled steel band 26 is in contact with the seam of the sealed tube envelope 18 and is guided around a cooling roller 9. The sealed tube envelope 18 is detached from the sealing drum 2 in the region of the cooling roller 9, and is guided over the cooling roller 9 and a deflecting roller 10 onto a wind-up roll 19.

대표청구항 ▼

An apparatus for the continuous welding or sealing of seams of plastic films comprising: a rotatable sealing drum; means for supplying a plurality of plastic film edges to said sealing drum in a contiguous seam arrangement; means for guiding said plastic film over a partial periphery of said sealing drum; means for supplying a sealing strip, and for positioning said sealing strip so as to cover the seam of said plastic film edges; at least one endless heating band; means including a plurality of deflecting/tensioning rollers, for pressing said at least one endless heating band radially against said partial periphery of said rotating sealing drum; and means for heating said at least one endless heating band comprising a plurality of feed rollers for said at least one heating band supplying electrical current for resistance heating of said at least one heating band, said rollers resting against said partial periphery of said sealing drum, the position of one or more of said rollers being adjustable along the partial periphery of said sealing drum in order to vary the lengths of sealing and return strands of said at least one heating band and to set the electrical resistance, whereby the heating ability of said return strand can be controlled to prevent damage as a result of overheating, and at least one sliding contact provided on each of said feed rollers for supplying the electrical current.

이 특허를 인용한 특허 (15) 인용/피인용 타임라인 분석

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Rusnak,John; Shoemaker,Jeff; Shah,Amit; O'Hara,Scott, Bag with elastic strip and method of making the same.
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Schuhn, Daniel, Device and method for producing tubes for packaging tubes.
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Belias William P. ; Gueli Catherine E. ; Glod ; Sr. Lawrence J., Elastic top drawtape bag and method of manufacturing the same.
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Mishra,Satchidanand; Yu,Robert C. U.; Horgan,Anthony M.; Hsieh,Bing R.; VonHoene,Donald C.; Grabowski,Edward F.; Post,Richard L.; Domm,Edward A., Flexible imaging member belt seam smoothing method.
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Frantz David Louis ; Lewis Walter Ernest ; Jeral Robert Vincent ; Fiesser Frederick Henry, Heat-sealing wheels for forming a longitudinal weld or seal in seams of plastic films.
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Bryniarski David A. (Rochester NY) Grosz Edward G. (Sodus Point NY), Method and apparatus for making non-roping thermoplastic draw tape for thermoplastic bags.
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Bryniarski David A. (Rochester NY) Grosz Edward G. (Sodus Point NY), Method and apparatus for making non-roping thermoplastic draw tape for thermplastic bags.
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Bierschenk, Patrick Joseph; Dierl, Martin Bernhard; Huebner, Chad Arthur; Reaves, Jerry Mike, Method for making a flat bottom pillow pouch.
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Tin T. Vo ; Wayne J. Moras ; Steven P. Long, Non-blocking elastomeric articles.
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Voigtmann, Jean-Pierre, Process for the internal welding of plastic tubes.
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Buchman James E. (Appleton WI) Jahnke Kenneth C. (Appleton WI), Rotary draw tape bag making apparatus and method.
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Thomasset, Jacques, Thermoplastic tubular packaging body with an embedded strip.
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Kastl Erna (Niedernhausen DEX) Mathieu Marion (Mainz-Kastel DEX) Goerres Anton (Eppstein-Vockenhausen DEX), Tubular casing having an adhesive tape in the direction of its longitudinal axis.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Apparatus for continuous welding or sealing of seams of plastic films 원문보기