GB1311085A - - Google Patents

Info

Publication number
GB1311085A
GB1311085A GB2119669A GB1311085DA GB1311085A GB 1311085 A GB1311085 A GB 1311085A GB 2119669 A GB2119669 A GB 2119669A GB 1311085D A GB1311085D A GB 1311085DA GB 1311085 A GB1311085 A GB 1311085A
Authority
GB
United Kingdom
Prior art keywords
film
material
branches
assembly
film web
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
GB2119669A
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 filed Critical
Priority to GB2119669 priority Critical
Publication of GB1311085A publication Critical patent/GB1311085A/en
Application status is Expired legal-status Critical

Links

Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/42Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
    • D01D5/423Formation 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05Filamentary, e.g. strands
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07Flat, e.g. panels
    • B29C48/08Flat, e.g. panels flexible, e.g. films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/19Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/20Articles comprising two or more components, e.g. co-extruded layers the components being layers one of the layers being a strip, e.g. a partially embedded strip
    • DTEXTILES; PAPER
    • D01NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/28Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30Conjugate filaments; Spinnerette packs therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/17Articles comprising two or more components, e.g. co-extruded layers the components having different colours

Abstract

1311085 Profiled films; crimped yarns and fibres SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 23 April 1970 [25 April 1969] 21196/69 Heading B5B [Also in Division D1] A film assembly comprises a film web which is fibrillatable after having been stretched in the longitudinal direction, which consists of a synthetic organic thermoplastic polymeric material, and which is provided on one or both surfaces thereof with closely spaced parallel ridges extending along the length of the film web consisting of thermoplastic meterial which "differs" i.e. in stress-strain characteristics from the material of which the film web consists having cross-sections which are substantially constant along their length and being firmly and permanently bonded to the film. The assembly may be manufactured by continuously melt extruding the thermoplastic film forming material through an extrusion die provided with a linear or an annular extrusion slot to form a film web and simultaneously continuously melt extruding the ridge - forming thermoplastic material separately through a row of closely spaced extrusion holes adjoining the slot or being in closely spaced relationship therewith to form parallel ridges strongly and permanently bonded to the film web and extending along the length thereof. The film portion of the assembly may consist of homo- and copolymers of vinyl chloride vinylidene chloride, vinyl acetate, acrylonitrile, as well as polyesters and polyamides. Preferred film-forming materials are homo- and copolymers of ethylene and particularly those of propylene. The term "differs" is further defined as meaning that the stress-strain relationship of the material of the film differs from that of the ridges at any temperature, both in the condition as present in the assembly in stretched or unstretched condition. The polymeric starting material for the ridges may or may not be different from the film-forming material. When using different polymers they must be selected so that the melt extruded ridges strongly adhere to the melt extruded film and that this strong adhesion is maintained on solidification followed by stretching. Very good adhesion is obtained when using polymers consisting of identical monomer units but differing from one another in average molecular weight, distribution of molecular weight, stereoconfiguration, crystallinity, and/or orientation. It is stated that such differences can be produced by dividing a stream of a molten thermoplastic polymer into branches and heating this to different temperatures and/or during unequal periods of time and/or at different shear rates so that the average molecular weights in the branches decrease to a different degree, and finally by extruding the material in one of the branches through the slot shaped extrusion orifice and the other through the row of holes adjoining or close to the slot. The dissimilarity in average molecular weight can also be achieved at an identical temperature and with an identical period of heating of the branches if these branches contain different concentrations of molecular weight stabilizing agents or if such an agent is present in only one of the branches. Differences in the crystallinity of the film and ridge portions of the film web assembly can also be effected by the use of substances which influence crystallization, e.g. nucleating agents. The film web assembly may optionally be slit longitudinally into strips if of suitable width, stretched and fibrillated as by using a pinned rotating cylinder. The fibrillate may be heated to develop its crimp. Figures, accompanying the provisional Specification, show various arrangements of slots and holes suitable for use in the extrusion dies, and cross-sections of profiled films obtained therefrom.
GB2119669A 1969-04-25 1969-04-25 Expired GB1311085A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2119669 1969-04-25

Publications (1)

Publication Number Publication Date
GB1311085A true GB1311085A (en) 1973-03-21

Family

ID=10158806

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2119669A Expired GB1311085A (en) 1969-04-25 1969-04-25

Country Status (8)

Country Link
BE (1) BE749170A (en)
CH (1) CH514421A (en)
DE (1) DE2019815A1 (en)
FR (1) FR2046406A5 (en)
GB (1) GB1311085A (en)
IE (1) IE34113B1 (en)
NL (1) NL7005879A (en)
ZA (1) ZA7002724B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7438777B2 (en) 2005-04-01 2008-10-21 North Carolina State University Lightweight high-tensile, high-tear strength bicomponent nonwoven fabrics
US7883772B2 (en) 2005-06-24 2011-02-08 North Carolina State University High strength, durable fabrics produced by fibrillating multilobal fibers
US7981226B2 (en) 2005-06-24 2011-07-19 North Carolina State University High strength, durable micro and nano-fiber fabrics produced by fibrillating bicomponent islands in the sea fibers
US8895126B2 (en) 2010-12-31 2014-11-25 Kimberly-Clark Worldwide, Inc. Segmented films with high strength seams
US8981178B2 (en) 2009-12-30 2015-03-17 Kimberly-Clark Worldwide, Inc. Apertured segmented films
US9676164B2 (en) 2011-07-18 2017-06-13 Kimberly-Clark Worldwide, Inc. Extensible sheet material with visual stretch indicator
US10081123B2 (en) 2010-12-31 2018-09-25 Kimberly-Clark Worldwide, Inc. Segmented films with high strength seams

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5079066A (en) * 1988-05-25 1992-01-07 Minnesota Mining And Manufacturing Company Tape having improved tear strength
US5173141A (en) * 1988-05-25 1992-12-22 Minnesota Mining And Manufacturing Company Preparing tape having improved tear strength
US5145544A (en) * 1989-08-01 1992-09-08 Minnesota Mining And Manufacturing Company Method for preparing tape having improved tear strength

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7438777B2 (en) 2005-04-01 2008-10-21 North Carolina State University Lightweight high-tensile, high-tear strength bicomponent nonwoven fabrics
US7935645B2 (en) 2005-04-01 2011-05-03 North Carolina State University Lightweight high-tensile, high-tear strength biocomponent nonwoven fabrics
US7883772B2 (en) 2005-06-24 2011-02-08 North Carolina State University High strength, durable fabrics produced by fibrillating multilobal fibers
US7981226B2 (en) 2005-06-24 2011-07-19 North Carolina State University High strength, durable micro and nano-fiber fabrics produced by fibrillating bicomponent islands in the sea fibers
US8420556B2 (en) 2005-06-24 2013-04-16 North Carolina State University High strength, durable micro and nano-fiber fabrics produced by fibrillating bicomponent islands in the sea fibers
US8981178B2 (en) 2009-12-30 2015-03-17 Kimberly-Clark Worldwide, Inc. Apertured segmented films
US8895126B2 (en) 2010-12-31 2014-11-25 Kimberly-Clark Worldwide, Inc. Segmented films with high strength seams
US10081123B2 (en) 2010-12-31 2018-09-25 Kimberly-Clark Worldwide, Inc. Segmented films with high strength seams
US9676164B2 (en) 2011-07-18 2017-06-13 Kimberly-Clark Worldwide, Inc. Extensible sheet material with visual stretch indicator

Also Published As

Publication number Publication date
IE34113L (en) 1970-10-25
DE2019815A1 (en) 1970-11-05
IE34113B1 (en) 1975-02-05
ZA7002724B (en) 1971-03-31
BE749170A (en) 1970-10-20
BE749170A2 (en)
NL7005879A (en) 1970-10-27
FR2046406A5 (en) 1971-03-05
CH514421A (en) 1971-10-31

Similar Documents

Publication Publication Date Title
US3404203A (en) Method of extruding bi-helically oriented thermoplastic tube
US3448183A (en) Method for the preparation of multilayer film
US3411979A (en) Foamed artificial filament
US3558580A (en) Thin oriented plastic strips and tape
US3565737A (en) Composite plastic sheet and method for the preparation thereof
US3453356A (en) Mixing of filamentary reinforcing material with thermoplastic resins
US3651196A (en) Preparation of oriented polymeric strapping
US3806289A (en) Apparatus for producing strong and highly opaque random fibrous webs
FI56331C (en) Naetformig produkt Science foerfarande in that framstaella densamma
US3647612A (en) Multilayer plastic articles
CA1061067A (en) Oriented nylon and laminates thereof
US3496259A (en) Process for preparing fibrous web
US3440309A (en) Production of expanded thermoplastic products
EP0380968B1 (en) Process for preparation of material for extrusion molding
US7048984B2 (en) Net structure and method of making
US4351683A (en) Method of forming web material
US2767435A (en) Process for longitudinally stretching polymeric film
DE3312568C3 (en) Slot die for the extrusion of plastic masses in multi-component films for the production of filaments and yarns
US4734240A (en) Melt-extrusion of polymer which is capable of forming an anisotropic melt phase to form large shaped articles exhibiting improved polymeric orientation
US5011698A (en) Breathable microporous film and methods for making it
US3634564A (en) Process for the manufacture of fibrillated foamed films
US6063105A (en) Medical devices fabricated from elastomeric alpha-olefins
US4923650A (en) Breathable microporous film and methods for making it
US4118438A (en) Transparent non-blocking polypropylene film and its preparation
US3328503A (en) Process for the manufacture of thermoplastic films

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees