WO1992004397A1 - Procede de dissolution de gelatine en continu - Google Patents

Procede de dissolution de gelatine en continu Download PDF

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Publication number
WO1992004397A1
WO1992004397A1 PCT/EP1991/001573 EP9101573W WO9204397A1 WO 1992004397 A1 WO1992004397 A1 WO 1992004397A1 EP 9101573 W EP9101573 W EP 9101573W WO 9204397 A1 WO9204397 A1 WO 9204397A1
Authority
WO
WIPO (PCT)
Prior art keywords
gelatin
extruder
solution
solvent
zone
Prior art date
Application number
PCT/EP1991/001573
Other languages
German (de)
English (en)
Inventor
Peter Koepff
Helmuth Stahl
Eberhard Dick
Brigitte Uhe
Klaus BRÄUMER
Original Assignee
Deutsche Gelatine-Fabriken Stoess Ag
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 Deutsche Gelatine-Fabriken Stoess Ag filed Critical Deutsche Gelatine-Fabriken Stoess Ag
Publication of WO1992004397A1 publication Critical patent/WO1992004397A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • C08J3/05—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/405—Intermeshing co-rotating screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/625—Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/76—Venting, drying means; Degassing means
    • B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
    • B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09H—PREPARATION OF GLUE OR GELATINE
    • C09H5/00—Stabilisation of solutions of glue or gelatine
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2389/00—Characterised by the use of proteins; Derivatives thereof
    • C08J2389/04—Products derived from waste materials, e.g. horn, hoof or hair

Definitions

  • the invention relates to a method for the continuous dissolution of gelatin according to the preamble of patent claim 1.
  • Gelatin has so far only been dissolved discontinuously in a solvent, in particular water, i.e. H. Gelatin must be mixed in batches, that is to say in containers of a certain capacity, with the necessary amount of solvent and then pre-swollen over a certain period of time. Only then can the gelatin be completely dissolved at elevated temperatures between about 50 and 80 ° C.
  • This dissolving of gelatin in portions is disadvantageous for the gelatin processing industry, for example the confectionery industry, because the only batch or batch dissolution of gelatin can hinder continuous further processing of the dissolved gelatin, and destruction due to the long service life of the gelatin solution (Hydrolysis) of the gelatin takes place. In addition, these gelatin solutions often contain unwanted air bubbles.
  • This air-bubble-free solution can be further diluted in a mixer or other liquid or pasty components can be added to it.
  • Suitable solvents for gelatin in the process according to the invention are in particular water, polyalcohols, especially glycerol, sorbitol or mixtures of these substances.
  • polyalcohols especially glycerol, sorbitol or mixtures of these substances.
  • FIG. 1 schematically shows an apparatus for performing the method according to the invention
  • Figure 2 shows a modified device for performing the inventive method.
  • the main idea is to mix the gelatin directly with the solvent at elevated temperature and pressure without pre-swelling in an extruder, in particular screw extruder, and thus to dissolve under the influence of the shear forces of the extruder force.
  • a twin screw extruder with two screws rotating in the same direction and having a working length of 48 D has proven itself very well when carrying out the process according to the invention.
  • This extruder is divided into 9 zones of 5 D each, which can be heated to different temperatures.
  • FIG. 1 shows a co-rotating twin-screw extruder 1 with a working length of 48 D, divided into 9 zones.
  • the 9 working zones of extruder 1 have one Length of 5 D each and are also schematically indicated in FIG. 1.
  • This powder gelatin is metered into the first zone of the extruder 1 from a storage vessel 2 which contains commercially available, dry, ground gelatin in powder form, this zone preferably being kept or cooled at room temperatures.
  • a solvent for example water, a polyalcohol, in particular glycerol, sorbitol or a mixture of these substances, is introduced from a storage vessel 3.
  • Zones 2-9 of extruder 1 are mostly progressively heated to temperatures that can be between 30 and 140 ° C.
  • the temperature is preferably below 100 ° C.
  • a vacuum pump 5, which generates a vacuum in this area, can be connected to one of the last zones of the extruder, for example to the third last zone.
  • an overpressure which can be between 5 and 100 bar and promotes the mixing of the gelatin with the solvent and the dissolution of the gelatin in the solvent.
  • the dry powder gelatin which is introduced from the storage vessel 2 is immediately accepted by the solvent without pre-swelling.
  • the time which elapses between the entry of the powder gelatin from the vessel 2 into the extruder 1 and the exit of the gelatin solution from the outlet 4 can be relatively short. be chosen. It can be, for example, between 1 and 6 minutes, preferably 4 minutes.
  • the gelatin solution flowing continuously out of the outlet 4 can be collected in a vessel 6 and sent for further processing.
  • the gelatin solution obtained in the manner described is free of air bubbles and specks, ie it contains no gelatin particles which are not or only partially dissolved.
  • degassing by means of the vacuum pump 5 can also be omitted.
  • An air bubble-free gelatin solution with a concentration lower than about 40% can easily be obtained by metering bubble-free further solvent into the air bubble-free gelatin solution with a concentration of more than 40% by weight gelatin, which is produced with the arrangement according to FIG. This is indicated schematically in Figure 2.
  • a known - static or dynamic - mixer 7 is connected, into which, apart from the gelatin solution emerging from the screw extruder 1, further solvent from a storage container 8 is introduced without bubbles, which in generally does not encounter any technical difficulties. Subsequently, the air bubble-free gelatin solution with a correspondingly small concentration is collected in a vessel 6 and sent for further processing.
  • the storage vessel 8 could also contain an additive which is to be added to the gelatin solution leaving the screw extruder 1, for example a glucose solution, an emulsion, dyes or the like. Since the substances from the storage vessel 8 can also be added continuously, overall, a gelatin solution of any desired concentration, in particular any desired small concentration, can be continuously obtained, to which the desired additives can also be added.
  • the pressure at the extruder outlet is 12 bar.
  • the gelatin solution emerging from the outlet of the extruder has a temperature of 70 ° C. This solution is extruded through a tubular die heated to 60 ° C. The gelatin solution is free of air bubbles.
  • the time between the introduction of the powder gelatin into the screw extruder and the exit of the gelatin solution from the extruder is 4 minutes. In the case of modified experimental procedures, this residence time of the gelatin in the screw extruder can also be between 3 and 6 minutes.
  • Example 1 The procedure of Example 1 is repeated.
  • the gelatin solution leaving the extruder is fed directly into a poppy seed pump known per se, which is a mixing apparatus 7 according to FIG.
  • An additional amount of water of 25 kg / h is metered into this pump at the same time.
  • a 5%, air-bubble-free gelatin solution can be removed at the outlet of the poppy seed pump.
  • This solution is prepared in a total of about 6 minutes after the powder gelatin has been introduced into the screw extruder.
  • Example 4 The procedure of Example 1 is repeated. A conventional static mixer is connected to the extruder outlet. A quantity of water of 11 kg / h is additionally pumped into this mixer. At the exit of the static mixer, a 10% gelatin solution free of air bubbles and specks can be removed.
  • Example 4
  • 1.5 kg / h of gelatin are metered into the feed zone of the extruder.
  • 0.320 / kg / h of water are continuously added to the next zone.
  • 0.65 kg / h of glycerol are introduced into zone 5 via a nozzle.
  • an applied negative pressure of 200 mbar in zone 7 a speck-free and air-bubble-free solution of gelatin in glycerol and water is obtained at the outlet of the extruder.
  • Zone 1 45 ° C
  • Zone 2 55 ° C
  • Zone 3 70 ° C
  • Zone 4 85 ° C
  • Zone 5 90 ° C
  • Zone 6 90 ° C
  • Zone 7 90 ° C
  • Zone 8 90 ° C
  • Zone 9 85 ° C.
  • the gelatin solution obtained has a temperature of 86 C C.
  • the pressure at the extruder exit is 25bar.
  • Example 2 The process according to Example 1 is repeated, but 1.5 kg / h of water are metered into the first extruder zone and 3 kg / h into the third zone.
  • the resulting 30% gelatin solution is fed from the extruder into a poppy seed pump, into which 16.8 kg / h of a cooking batch are simultaneously introduced.
  • the cooking approach has the following composition:
  • sucrose 35.6% by weight sucrose

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Medicinal Preparation (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

Un procédé de dissolution de gélatine en continu dans un solvant comprend les étapes suivantes: (a) on introduit la gélatine en poudre avec le solvant dans la zone d'alimentation d'une extrudeuse, notamment une extrudeuse à vis; (b) on mélange la gélatine et le solvant dans l'extrudeuse, sous l'effet de forces de cisaillement, à une température et une pression élevées, de manière à obtenir une solution liquide de gélatine; (c) on extrait la solution liquide de l'extrudeuse par une filière.
PCT/EP1991/001573 1990-09-03 1991-08-20 Procede de dissolution de gelatine en continu WO1992004397A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4027888A DE4027888A1 (de) 1990-09-03 1990-09-03 Verfahren zum kontinuierlichen aufloesen von gelatine
DEP4027888.3 1990-09-03

Publications (1)

Publication Number Publication Date
WO1992004397A1 true WO1992004397A1 (fr) 1992-03-19

Family

ID=6413488

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1991/001573 WO1992004397A1 (fr) 1990-09-03 1991-08-20 Procede de dissolution de gelatine en continu

Country Status (2)

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DE (1) DE4027888A1 (fr)
WO (1) WO1992004397A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2551086B1 (fr) 2011-07-28 2014-03-19 Gambro Lundia AB Procédé de production d'une solution de filage
DE102021128244B3 (de) * 2021-10-29 2022-12-15 Gelinova GmbH Verfahren zur Herstellung von Gelatinefolie und zur Herstellung von Gelatine-Formteilen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT274742B (de) * 1965-12-20 1969-09-25 Buss Ag Verfahren zur kontinuierlichen Herstellung von Lösungen und Suspensionen und Einrichtung zur Durchführung des Verfahrens
EP0156329A2 (fr) * 1984-03-29 1985-10-02 Diatec Polymers Procédé et dispositif de dissolution rapide de polymères dans l'eau
EP0354345A2 (fr) * 1988-08-10 1990-02-14 Deutsche Gelatine-Fabriken Stoess AG Granules de gélatine, procédé et dispositif de préparation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT274742B (de) * 1965-12-20 1969-09-25 Buss Ag Verfahren zur kontinuierlichen Herstellung von Lösungen und Suspensionen und Einrichtung zur Durchführung des Verfahrens
EP0156329A2 (fr) * 1984-03-29 1985-10-02 Diatec Polymers Procédé et dispositif de dissolution rapide de polymères dans l'eau
EP0354345A2 (fr) * 1988-08-10 1990-02-14 Deutsche Gelatine-Fabriken Stoess AG Granules de gélatine, procédé et dispositif de préparation

Also Published As

Publication number Publication date
DE4027888A1 (de) 1992-03-05

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