GB885358A - Method and apparatus for homogenising very highly viscous melts - Google Patents

Method and apparatus for homogenising very highly viscous melts

Info

Publication number
GB885358A
GB885358A GB16076/60A GB1607660A GB885358A GB 885358 A GB885358 A GB 885358A GB 16076/60 A GB16076/60 A GB 16076/60A GB 1607660 A GB1607660 A GB 1607660A GB 885358 A GB885358 A GB 885358A
Authority
GB
United Kingdom
Prior art keywords
width
per min
highly viscous
pict
drawn
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
GB16076/60A
Inventor
Erich Schwartz
Franz Schmidt
Richard Sinn
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik 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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB885358A publication Critical patent/GB885358A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/421—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/421—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
    • B01F25/422—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path between stacked plates, e.g. grooved or perforated plates

Abstract

<PICT:0885358/IV (a)/1> <PICT:0885358/IV (a)/2> In a process and apparatus for homogenizing a highly viscous molten polymer (see also Group II), especially polyethylene, the material having a viscosity of at least 50,000 poises is forced through a narrow tortuous passageway of width 0,5 to 3 mm. In an example a linear low-pressure polyethylene is pumped through an arrangement according to Fig. 1 having 12 parallel channels of width 1,2 mm. at 175 DEG C. and at a rate of 20 g per min. There are 30 spinneret openings 5 having a diameter of 0,3 mm. and the threads may be drawn at a speed of 200 mm. per min. In another example an apparatus according to Fig. 2 is installed between the screw cylinder outlet and the blowing head of a film-blowing machine. The width of the concentric annular passages is 1,5 mm. The melt is supplied at 60 g per minute and 140 DEG C. and a film about 60 microns in thickness is drawn off at a rate of 2 m. per min.
GB16076/60A 1959-05-09 1960-05-06 Method and apparatus for homogenising very highly viscous melts Expired GB885358A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE885358X 1959-05-09

Publications (1)

Publication Number Publication Date
GB885358A true GB885358A (en) 1961-12-28

Family

ID=6832773

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16076/60A Expired GB885358A (en) 1959-05-09 1960-05-06 Method and apparatus for homogenising very highly viscous melts

Country Status (1)

Country Link
GB (1) GB885358A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436448A (en) * 1966-02-03 1969-04-01 American Cyanamid Co Method and apparatus for spinning uniform fibers
FR2461515A1 (en) * 1979-07-24 1981-02-06 Robert Guerin Emulsification of mutually insol. liquids - by pumping mixt. through passage of narrowing section with wide slowing and diverting sections to give ultra-colloidal emulsion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436448A (en) * 1966-02-03 1969-04-01 American Cyanamid Co Method and apparatus for spinning uniform fibers
FR2461515A1 (en) * 1979-07-24 1981-02-06 Robert Guerin Emulsification of mutually insol. liquids - by pumping mixt. through passage of narrowing section with wide slowing and diverting sections to give ultra-colloidal emulsion

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