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DE437859C - Process for changing the structure of the walls of hollow bodies made of pulp - Google Patents

Process for changing the structure of the walls of hollow bodies made of pulp

Info

Publication number
DE437859C
DE437859C DEB116525D DEB0116525D DE437859C DE 437859 C DE437859 C DE 437859C DE B116525 D DEB116525 D DE B116525D DE B0116525 D DEB0116525 D DE B0116525D DE 437859 C DE437859 C DE 437859C
Authority
DE
Germany
Prior art keywords
walls
pulp
changing
hollow bodies
bodies made
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
DEB116525D
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.)
BAUMGAERTNER
Katz & Co Dr GmbH
Original Assignee
BAUMGAERTNER
Katz & Co Dr GmbH
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 BAUMGAERTNER, Katz & Co Dr GmbH filed Critical BAUMGAERTNER
Priority to DEB116525D priority Critical patent/DE437859C/en
Application granted granted Critical
Publication of DE437859C publication Critical patent/DE437859C/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J7/00—Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)

Description

Verfahren zur Veränderung des Gefüges der Wandungen von Hohlkörpern aus Faserstoffbrei. Es ist bekannt, Hohlkörper aus Faserstoffbrei in Formen mit durchlässigen Wandungen unter Zuhilfenahme eines erhitzten luftförmigen Druckmittels zu erzeugen.Process for changing the structure of the walls of hollow bodies from pulp. It is known to use hollow bodies made of pulp in shapes permeable walls with the aid of a heated air pressure medium to create.

Derartige Hohlkörper besitzen infolge des elastischen Druckes des luftförmigen Druckmittels ein charakteristisches durchlässiges Gefüge, welches für viele Zwecke sehr erwünscht ist.Such hollow bodies have due to the elastic pressure of the air pressure means a characteristic permeable structure, which for many purposes is very desirable.

In manchen Fällen hat es sich aber als vorteilhaft herausgestellt, diese Durchlässigkeit zumindest an einzelnen Stellen zu vermindern; beispielsweise wenn es sich darum handelt, mit einem möglichst geringen Aufwand von Farbstoffen Färbungen vorzunehmen.In some cases, however, it has proven to be advantageous to reduce this permeability at least in individual places; for example if it is, with the least possible use of dyes To make staining.

Gemäß der Erfindung wird eine Verdichtung .des Gefüges dadurch erzielt, daß man die Wandungen des Hohlkörpers nach erfolgter Formung mit Preßwerkzeugen bearbeitet. Diese Nachpressung kann an einzelnen Stellen des Behälters, z. B. am Boden oder Deckel, erfolgen, sie kann sich aber auch auf die Seitenwände usw. erstrecken. Man kann die Wirkung der Nachpressung steigern, wenn man außer dem Druck auch Wärme etwa in der Weise zur Anwendung bringt, daß geheizte Preßwerkzeuge verwendet werden. Das hat auch noch den weiteren Vorteil, daß die für die Fertigstellung der Hohlkörper sonst erforderliche Trocknung teilweise entfällt.According to the invention, compression of the structure is achieved by that the walls of the hollow body after molding with pressing tools processed. This repressing can be done at individual points of the container, for. B. on Bottom or cover, take place, but it can also extend to the side walls, etc. The effect of the repressing can be increased if, in addition to the pressure, heat is also used approximately in the way that heated press tools are used. This also has the further advantage that it is necessary for the completion of the hollow body Drying otherwise required is partially omitted.

Ferner kann eine geeignete Imprägnierung des Behälters vorangehen oder nachfolgen.Furthermore, a suitable impregnation of the container can precede it or follow.

Claims (1)

PATENTANSPRUCH: Verfahren zur Veränderung des Gefüges der Wandungen von Hohlkörpern, welche aus Faserstoffbrei in Formen mit durchlässigen Wandungen unter Zuhilfenahme eines luftförmigen Druckmittels hergestellt sind, dadurch gekennzeichnet, daß die Wandungen des Hohlkörpers an einzelnen Stellen (Boden, Deckel usw.) nach der Formung mittels Preßwerkzeuge nachgepreßt werden.PATENT CLAIM: Process for changing the structure of the walls of hollow bodies, which are made from pulp in shapes with permeable walls are produced with the aid of an air pressure medium, characterized in that that the walls of the hollow body at individual points (bottom, lid, etc.) after be re-pressed after the shaping by means of pressing tools.
DEB116525D 1924-11-15 1924-11-15 Process for changing the structure of the walls of hollow bodies made of pulp Expired DE437859C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB116525D DE437859C (en) 1924-11-15 1924-11-15 Process for changing the structure of the walls of hollow bodies made of pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB116525D DE437859C (en) 1924-11-15 1924-11-15 Process for changing the structure of the walls of hollow bodies made of pulp

Publications (1)

Publication Number Publication Date
DE437859C true DE437859C (en) 1926-12-03

Family

ID=6994325

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB116525D Expired DE437859C (en) 1924-11-15 1924-11-15 Process for changing the structure of the walls of hollow bodies made of pulp

Country Status (1)

Country Link
DE (1) DE437859C (en)

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