DE673276C - Process for the production of a filter paper from cotton and cellulose - Google Patents

Process for the production of a filter paper from cotton and cellulose

Info

Publication number
DE673276C
DE673276C DEM135044D DEM0135044D DE673276C DE 673276 C DE673276 C DE 673276C DE M135044 D DEM135044 D DE M135044D DE M0135044 D DEM0135044 D DE M0135044D DE 673276 C DE673276 C DE 673276C
Authority
DE
Germany
Prior art keywords
cotton
cellulose
filter paper
production
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEM135044D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Melitta Werke Bentz and Sohn KG
Original Assignee
Melitta Werke Bentz and Sohn KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Melitta Werke Bentz and Sohn KG filed Critical Melitta Werke Bentz and Sohn KG
Priority to DEM135044D priority Critical patent/DE673276C/en
Application granted granted Critical
Publication of DE673276C publication Critical patent/DE673276C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/18—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Paper (AREA)

Description

Verfahren zur Herstellung eines Filte@@apiers aus Baumwolle und Cellulose Die bisher bakannte Filterwatte, wie sie beispielsweise zum Durchseien von Milch, Kaffee und Tee verwandt wird, besteht aus Baumwollfaser. Man hat zwar bereits vielfach versucht, dieser Watte in mehr oder weniger starkem Maße Cellulose zuzusetzen, jedoch sind diese Versuche stets daran gescheitert, daß es nicht möglich war, die gewünschte Durchlässigkeit zu erzielen.Process for the production of a filter paper from cotton and cellulose The previously known filter floss, such as those used for straining milk, Coffee and tea used is made of cotton fiber. You have already done so many times tries to add cellulose to this wad to a greater or lesser extent, however these attempts have always failed because it was not possible to achieve the desired To achieve permeability.

Gegenstand vorliegender Erfindung ist ein Verfahren zur Herstellung eines Filterpapiers aus Baumwolle und Cellulose, das darin besteht, zwischen zwei Baumwollvliesen eine Papierbahn, deren Durchlässigkeit die des herzustellenden Filterpapiers übersteigt, mittels Kalanderwalzen festzupressen, so daß eine in sich gefestigte Papierbahn entsteht, die in Filterblätter von gewünschter Größe zerschnitten werden kann. The present invention relates to a method of production a filter paper made of cotton and cellulose, which consists in between two Cotton fleeces a paper web, the permeability of which is that of the filter paper to be produced exceeds, to be pressed tight by means of calender rolls, so that a solid Paper web is created, which is cut into filter sheets of the desired size can.

In der Zeichnung ist das Verfahren gemäß der Erfindung beispielsweise veranschaulicht Es zeigen Abb. 1 eine Vorrichtung zur Ausübung des Verfahrens in Seitenansicht, Abb. 2 nach dem Verfahren hergestellte Filterpäpiere im Scflnitt, Abb. 3 teine Draufsicht auf das Filterpapier nach Abb. 2. In the drawing the method according to the invention is for example Fig. 1 illustrates an apparatus for performing the method in FIG Side view, Fig. 2 cut filter papers produced according to the process, Fig. 3 is a top view of the filter paper according to Fig. 2.

Nach der Erfindung wird zwischen zwei Baumwollvliesen a eine Papierbahn b, die von einer Rolle c abgezogen wird, mittels Kalanderwalzen d festgepreßt und gleichzeitig mit Prägungen versehen, die die Festigkeit der Verbindung außerordentlich, erhöhen. Die Baumwollvliese a werden in an sich bekannter Weise dadurch hergestellt, daß die büschelförmige Baumwolle als sog. Baumwollwickel bei f eingelegt und durch die Krempel g in ein Flächengebilde, einen sog. Flor oder Vlies, verwandeln wird. According to the invention, a paper web is between two cotton fleeces a b, which is withdrawn from a roll c, pressed by means of calender rolls d and at the same time provided with embossing, which the strength of the connection extraordinarily, raise. The cotton fleeces a are produced in a manner known per se by that the tuft-shaped cotton is inserted as a so-called cotton wrap at f and through the card g will transform into a flat structure, a so-called pile or fleece.

Bei der Herstellung von Filterpapieren zum Durchseien von Milch, Kaffee u. dgl. muß die Papierbahn b so dünn sein, daß ihre Durchlässigkeit die des herzustellenden Filter papiers übersteigt. Da die von der Rolle c abgezogene Papierbahn b keine besondere Festigkeit zu haben braucht, läßt sich diese Bedingung ohne besondere Schwierigkeit erfüllen. Für die Herstellung von Filterblättern zum Durchseien von Milch liegt die Stärke der Papierbahn b zweckmäßig in der Größenordnung von 15 g pro Quadratmeter. In the manufacture of filter papers for straining milk, Coffee and the like. The paper web b must be so thin that its permeability is that of the Filter paper to be produced exceeds. Since the paper web withdrawn from the roll c b does not need to have any particular strength, this condition can be met without any particular Meet difficulty. For making filter sheets for straining Milk, the thickness of the paper web b is expediently of the order of 15 g per square meter.

Das fertige Filterpapier ist äußerlich von Filterblättern aus reiner Baumwolle nicht zu unterscheiden, da die Cellulose in der Baumwolle eingebettet ist. The finished filter paper is externally purer from filter sheets Cotton indistinguishable because the cellulose is embedded in the cotton is.

Claims (1)

PATENTANSPRUCII : Verfahren zur Herstellung eines Filterpapiers aus Baumwolle und Cellulose, dadurch gekennzeichnet, daß zwischen zwei Baumwollvliesen (a) eine Papierbahn (b), deren Durchlässigkeit die des herzustellenden Filterpapiers übersteigt, mittels Ralanderwalzen (d) festgepreßt wird. PATENT CLAIM: Process for the production of a filter paper from Cotton and cellulose, characterized in that between two cotton fleeces (A) a paper web (b), the permeability of which is that of the filter paper to be produced exceeds, is pressed firmly by means of Ralander rollers (d).
DEM135044D 1936-07-04 1936-07-04 Process for the production of a filter paper from cotton and cellulose Expired DE673276C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM135044D DE673276C (en) 1936-07-04 1936-07-04 Process for the production of a filter paper from cotton and cellulose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM135044D DE673276C (en) 1936-07-04 1936-07-04 Process for the production of a filter paper from cotton and cellulose

Publications (1)

Publication Number Publication Date
DE673276C true DE673276C (en) 1939-03-18

Family

ID=7333201

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM135044D Expired DE673276C (en) 1936-07-04 1936-07-04 Process for the production of a filter paper from cotton and cellulose

Country Status (1)

Country Link
DE (1) DE673276C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE937125C (en) * 1952-02-23 1955-12-29 Bentz & Sohn Melitta Filter bag consisting of several layers of cotton or cellulose and cellulose

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE937125C (en) * 1952-02-23 1955-12-29 Bentz & Sohn Melitta Filter bag consisting of several layers of cotton or cellulose and cellulose

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