GB1260838A - Machinery for the manufacture of filaments by fibrillation of synthetic organic thermoplastic polymers - Google Patents

Machinery for the manufacture of filaments by fibrillation of synthetic organic thermoplastic polymers

Info

Publication number
GB1260838A
GB1260838A GB3417271A GB3417271A GB1260838A GB 1260838 A GB1260838 A GB 1260838A GB 3417271 A GB3417271 A GB 3417271A GB 3417271 A GB3417271 A GB 3417271A GB 1260838 A GB1260838 A GB 1260838A
Authority
GB
United Kingdom
Prior art keywords
film
ridges
rollers
fibrillation
stretching
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
GB3417271A
Inventor
Brian James Vernon
Wladslaw Henry Skoroszewzki
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Priority to GB3417271A priority Critical patent/GB1260838A/en
Priority claimed from GB17237/68A external-priority patent/GB1260836A/en
Publication of GB1260838A publication Critical patent/GB1260838A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
    • D01D5/423—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by fibrillation of films or filaments
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene

Abstract

1,260,838. Film fibrillation apparatus. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 26 March, 1969 [10 April, 1968], No. 34172/71. Divided out of 1,260,836. Heading B5B. Apparatus suitable for the film fibrillation process of the parent Specification comprises a profiling unit A and means B for stretching uniaxially in the longitudinal direction a profiled film from said profiling unit and for subjecting the stretched film to a fibrillation treatment during and/or after the stretching treatment, said profiling unit comprising an element 3 having a non-yielding surface provided with a plurality of closely-spaced, parallel surface ridges each having a profile (illustrated to an enlarged scale in Fig. 2), in a plane normal to the longitudinal direction of the ridge, which includes inwardly directed sides leading to a peak and a further element 4 having a non-yielding surface, said further element forming a nip with said profiling element through which nip a film web or sheet-like mass of synthetic organic thermoplastic polymer can be passed. Preferably the apparatus includes a slot-die extruder 1 for producing a sheet-like mass of polymer, which may consist of a laminate of at least two polymers in superimposed relationship. The profiling unit A (Figs. 3 and 4, not shown) suitably comprises a pair of co-operating rotatable rollers 3, 4 having non-yielding surfaces, at least one of the rollers being adapted to be driven and at least one having a plurality of said surface ridges, and means, preferably pneumatic or hydraulic, for biasing said rollers towards one another to form a nip. In the preferred embodiment the stretching means includes a series of Godet rollers 6 and 8 separated by a heating oven 7 and the stretched film, which is already partially fibrillated by the stretching treatment, is completely fibrillated by treatment in means 9 which includes an elongated passage through which the stretched film is passed together with a current of air which is arranged to travel at a high velocity in the direction of the film. The profile of the ridges of the ridged roller 3 (or rollers 3 and 4) is preferably that of the Britsh Standard Whitworth screw thread and is such that the pitch of the ridges is within the range 0À003 to 0À05 inch and the depth of the troughs between adjacent ridges is within the range 0À002 to 0À02 inch.
GB3417271A 1968-04-10 1968-04-10 Machinery for the manufacture of filaments by fibrillation of synthetic organic thermoplastic polymers Expired GB1260838A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3417271A GB1260838A (en) 1968-04-10 1968-04-10 Machinery for the manufacture of filaments by fibrillation of synthetic organic thermoplastic polymers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB17237/68A GB1260836A (en) 1968-04-10 1968-04-10 The manufacture of filaments, fibres and yarns by fibrillation of synthetic organic thermoplastic polymers, and the resulting products
GB3417271A GB1260838A (en) 1968-04-10 1968-04-10 Machinery for the manufacture of filaments by fibrillation of synthetic organic thermoplastic polymers

Publications (1)

Publication Number Publication Date
GB1260838A true GB1260838A (en) 1972-01-19

Family

ID=26252561

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3417271A Expired GB1260838A (en) 1968-04-10 1968-04-10 Machinery for the manufacture of filaments by fibrillation of synthetic organic thermoplastic polymers

Country Status (1)

Country Link
GB (1) GB1260838A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years