Device for opening a tubular bag and its application

a tubular bag and opening device technology, applied in the direction of tubular containers, pliable tubular containers, containers, etc., can solve the problems of inability to flow freely, known mechanisms have certain disadvantages, paste can be held back temporarily, etc., to prevent the tube from twisting and the resistance of viscous paste to be kept low

Inactive Publication Date: 2005-07-28
HERAEUS KULZER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013] In a convenient design form one or several bars connected to a toothed wheel in the channel prevent the twisting of the tube when the bag is being pierced or is pierced.
[0014] It proves to be advantageous that the inserting tube and the blade are made of different materials, namely, the tube is made of a sealing ...

Problems solved by technology

However, the known mechanisms have certain disadvantages depending on the consistency of the products in these tubular bags.
The disadvantage of this system, particularly in the case of multi-component paste systems, is that a paste can be held back temporarily until this bag bursts open under partly high pressure and the paste, ...

Method used

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  • Device for opening a tubular bag and its application
  • Device for opening a tubular bag and its application
  • Device for opening a tubular bag and its application

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Embodiment Construction

[0014] It proves to be advantageous that the inserting tube and the blade are made of different materials, namely, the tube is made of a sealing material and the blade is made of a sturdy material. Furthermore, it is advantageous if the blade has at least two pointed tips that are connected by a slanting or bent cutting edge. The blade preferentially creates a non-linear opening in the foil of the tubular bag by which the resistance for viscous pastes can be kept low.

[0015] The blade preferentially has at least two pointed tips that are connected by a cutting edge. In order to guarantee the optimal functioning of the blade, it is necessary to design the blade such that it is very pointed, sharp-edged and stiff, as would be possible using steel or ceramics for instance.

[0016] It is possible to design the blade and opening tube out of one unit (combination component). Since the side of the opening tube facing away from the blade must be essentially more flexible and softer in order ...

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Abstract

Device for opening a tubular bag with a blade attached to an inserting tube, wherein the blade is equipped with at least one edge for lancing the tubular bag and with at least one edge for cutting the tubular bag and the shape of the blade is aligned to the inner wall of the outlet for the material contained in the bag.

Description

[0001] The invention concerns a device for the opening of a tubular bag and also for its application. BACKGROUND OF THE INVENTION [0002] In the dental field, particularly, pastes of varying consistencies are offered in tubular bags with increasing frequency. In doing so it is necessary to guarantee a simple, clean and safe application for the consumer. [0003] For this purpose the tubular bags are combined with opening mechanisms as have been described already in EP 787 655 (=U.S. Pat. No. 6,012,610), EP 1 121 195 (=U.S. Pat. No. 6.394.643), EP 1 227 049 (=US 2002 / 0113089). However, the known mechanisms have certain disadvantages depending on the consistency of the products in these tubular bags. [0004] EP 787 655 describes a device, wherein the bag stretches out under pressure beyond its original shape, before it bursts due to a device arranged behind the top plate. The disadvantage of this system, particularly in the case of multi-component paste systems, is that a paste can be hel...

Claims

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Application Information

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IPC IPC(8): B65D83/00B05C17/005B65B69/00B65D75/70B65D77/06
CPCB65B69/0041B05C17/00586
Inventor NEHREN, KLAUS-DIETERKNISPEL, GOTTFRIEDTHELEN, MONIKAURBAS, HOLGERBECKER, MARTINAKLEIN, MARKUS
Owner HERAEUS KULZER
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