DE1813649A1 - Use of a special polypropylene molding compound for the production of longitudinally stretched tapes that are difficult to splice - Google Patents

Use of a special polypropylene molding compound for the production of longitudinally stretched tapes that are difficult to splice

Info

Publication number
DE1813649A1
DE1813649A1 DE19681813649 DE1813649A DE1813649A1 DE 1813649 A1 DE1813649 A1 DE 1813649A1 DE 19681813649 DE19681813649 DE 19681813649 DE 1813649 A DE1813649 A DE 1813649A DE 1813649 A1 DE1813649 A1 DE 1813649A1
Authority
DE
Germany
Prior art keywords
tapes
splice
longitudinally stretched
production
molding compound
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.)
Pending
Application number
DE19681813649
Other languages
German (de)
Inventor
Moorwessel Dr Dieter
Trieschmann Dr Hans-Georg
Merkel Dr Helmut
Georg Pilz
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
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 filed Critical BASF SE
Priority to DE19681813649 priority Critical patent/DE1813649A1/en
Priority to FR6942444A priority patent/FR2025776A1/en
Publication of DE1813649A1 publication Critical patent/DE1813649A1/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10Homopolymers or copolymers of propene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/06Polyethene

Description

Badische Anilin- & Soda-Fabrik AG 1813649Badische Anilin- & Soda-Fabrik AG 1813649

Uneer Zeichen: O.Z. 25 928 HWz/Kra 6700 Ludwigshafen, 9.12.1968Uneer sign: O.Z. 25 928 HWz / Kra 6700 Ludwigshafen, December 9, 1968

Verwendung einer speziellen Polypropylen-Forramaase zum Herstellen längsverstreckter, schwerspleißbarer BänderUse of a special polypropylene forramaase to manufacture Longitudinally stretched, hard-to-splice tapes

Die vorliegende Erfindung betrifft die Verwendung einer speziellen Polypropylen-Formmasse zum Herstellen längsverstreckter, schwerspleißbarer Bänder mit einer Querschnittsfläche von 0,02 bis 40 mm und einer Dicke von 0,01 bis 3 mm.The present invention relates to the use of a specific one Polypropylene molding compound for the production of longitudinally stretched, hard-to-splice tapes with a cross-sectional area of 0.02 to 40 mm and a thickness of 0.01 to 3 mm.

Es ist bekannt, längsverstreckte Bänder mit den angegebenen Maßen aus Polypropylen herzustellen. Eine typische Eigenschaft solcher M Bänder ist es, daß sie - insbesondere unter mechanischer Belastung - die Neigung haben, in ihrer Längsrichtung aufzuspleißen. Diese Eigenschaft kann - je nach dem vorgesehenen Verwendungszweck der Bänder - von Vor- oder von Nachteil sein. Sie ist z.B. von Vorteil bei Bändern, die gespleißt werden sollen (etwa zu Spleißbändchen, die ihrerseits z.B. zum Herstellen von Kordeln und Garnen dienen können); sie ist z.B. von Nachteil bei Bändern, die nicht spleißen sollen (wie etwa Bänder, die als solche zu Verpackungszwecken dienen sollen).It is known to produce longitudinally stretched tapes with the specified dimensions from polypropylene. A typical property of such M tapes is that they tend to splice open in their longitudinal direction, especially under mechanical stress. This property can - depending on the intended use of the tapes - be an advantage or a disadvantage. It is advantageous, for example, for tapes that are to be spliced (for example for splicing tapes which in turn can be used, for example, to produce cords and yarns); it is, for example, a disadvantage in the case of tapes that are not intended to splice (such as tapes that are intended as such for packaging purposes).

Der vorliegenden Erfindung lag die Aufgabe zugrunde, eine Polypropylen-Formmasse aufzuzeigen, aus der sich längsverstreckte Bänder herstellen lassen, deren Neigung, aufzuspleißen, gegenüber ^j vergleichbaren bekannten Bändern stark vermindert ist.The present invention was based on the object of a polypropylene molding composition to show, from which longitudinally stretched tapes can be produced, the tendency of which to splice open compared to ^ j comparable known tapes is greatly reduced.

Die Lösung dieser Aufgabe wurde gefunden in einer Polypropylen-Formmasse, die (1) in überwiegender Menge ein Polypropylen einer bestimmten Spezifikation sowie (2) in untergeordneter Menge ein Polyäthylen einer bestimmten Spezifikation in homogener Verteilung enthält.The solution to this problem was found in a polypropylene molding compound, the (1) predominantly a polypropylene of a certain specification and (2) a minor amount Contains polyethylene of a certain specification in homogeneous distribution.

Gegenstand der vorliegenden Erfindung ist dementsprechend die Verwendung einer Polypropylen-Formmasse, dieThe present invention accordingly provides the use of a polypropylene molding composition which

1) 100 Gewichtsteil· Polypropylen mit einer Intrinsic-Viskosität1) 100 parts by weight · polypropylene having an intrinsic viscosity

[7$gem«ssen in Dekalin t»i 1300C) von 1 bis 9 (vorsugsweis· 709/68 ' - 2 - ' [7 $ according to decalin t »i 130 0 C) from 1 to 9 (precautionary 709/68 '- 2 -'

009828/1854009828/1854

BAD ORiGiNAtBAD ORiNAt

- * - O.Z. 25 928- * - O.Z. 25 928

von 2 bis 4) und einer Dichte (nach DIN 53 479) von 0,80 bis 0,92 g/cm (vorzugsweise von 0,88 bis 0,91 g/cm ) sowiefrom 2 to 4) and a density (according to DIN 53 479) from 0.80 to 0.92 g / cm (preferably from 0.88 to 0.91 g / cm) as well as

2) 1 bis 50 (vorzugsweise 4 bis 20) Gewichtsteile Polyäthylen mit einem Schmelzindex (nach DIN. 53 735 - 19O°C/2,l6 Kp) von 0,01 bis 2,0 (vorzugsweise von 0,1 bis 1,7) und einer Dichte (nach DIN 53 479) von 0,91β bis 0,960 g/cnr5 (vorzugsweise von 0,918 bis 0,940 g/cm3) . - ' 2) 1 to 50 (preferably 4 to 20) parts by weight of polyethylene with a melt index (according to DIN. 53 735-19O ° C / 2.16 Kp) of 0.01 to 2.0 (preferably 0.1 to 1.7 ) and a density (according to DIN 53 479) of 0,91β to 0.960 g / cnr 5 (preferably 0.918 to 0.940 g / cm 3). - '

in homogener Verteilung enthält, zum Herstellen längsverstreckter, schwerspleißbarer Bänder mit einer Querschnittsfläche von 0,02 bis 40 mm und einer Dicke von 0,01 bis 3 mm.contains in homogeneous distribution, for the production of longitudinally stretched, Heavy-splicable tapes with a cross-sectional area of 0.02 to 40 mm and a thickness of 0.01 to 3 mm.

Die Einzelkomponenten der erfindungsgemäß zu verwendenden PoIypropylen-Formmasse sind als solche wohlbekannt und im Handel erhältlich, so daß sich nähere Ausführungen hierzu erübrigen.The individual components of the polypropylene molding composition to be used according to the invention are well known as such and are commercially available so that further details are not required.

Das Herstellen der Polypropylen-Formmasse aus den Einzelkomponenten kann mittels einschlägig üblicher Vorrichtungen in einschlägig üblicher Weise erfolgen. Zweckmäßigerweise kann man z.B. mittels eines Mischers (z.B. Extruders) das Polyäthylen homogen in das Polypropylen einarbeiten (Arbeitstemperatur 170 bis 310°C).The production of the polypropylene molding compound from the individual components can be carried out by means of relevant customary devices in the relevant customary manner. Appropriately, one can e.g. Using a mixer (e.g. extruder), work the polyethylene homogeneously into the polypropylene (working temperature 170 to 310 ° C).

Aus den erfindungsgemäß zu verwendenden Polypropylen-Formmassen lassen sich insbesondere Verpacküngsbänder und Webbänder herstellen. Packaging tapes and woven tapes in particular can be produced from the polypropylene molding compositions to be used according to the invention.

Das Verarbeiten der Formmassen zu längsverstreckten Bändern kann wiederum mittels einschlägig üblicher Vorrichtungen in einschlägig üblicher Weise erfolgen durch Extrudieren eines Primärbandes (zweckmäßigerweise Massetemperaturen beim Extrudieren 170 bis 31Q°c)The processing of the molding compounds to form longitudinally stretched strips can in turn by means of the relevant customary devices in the relevant customary manner by extruding a primary strip (expediently melt temperatures during extrusion 170 to 31Q ° c)

und anschließendes Längsverstrecken des Primärbandes (zweckmäßigerweise- Oberflächentemperatur beim Verstrecken 20 bis 15O0C zweckmäßiges Streckenverhältnis 1 : 4 bis 1 : 15).followed by longitudinal stretching of the primary band (zweckmäßigerweise- surface temperature during stretching 20 to 15O 0 C convenient route ratio of 1: 4 to 1: 15).

Beispiel
Es wird ausgegangen von einer Polypropylen-Farmmasse, die
example
It is based on a polypropylene mass that

; 009828/1854 - ; 009828/1854 -

BAD ORIGINALBATH ORIGINAL

- ^- O.Z. 25 928- ^ - O.Z. 25 928

1) 100 Gewichtsteile Polypropylen mit einer Intrinsic-Viskosität fr"] (gemessen in Dekalin bei 1300C) von 2,5 und einer Dichte (nach DIH 53 ^79) von 0,897 g/cnr sowie1) 100 parts by weight of polypropylene having an intrinsic viscosity fr "] (measured in decalin at 130 0 C) of 2.5 and a density (according to DIH 53 ^ 79) of 0.897 g / cnr and

2) 10 Gewichtsteile Polyäthylen mit einem Schmelzindex (nach DIN 53 735 - 19O°C/2,l6 Kp) von 0,2 und einer Dichte (nach DIN 53 W) von 0,918 g/cm3 2) 10 parts by weight of polyethylene with a melt index (according to DIN 53 735-19O ° C / 2.16 Kp) of 0.2 and a density (according to DIN 53 W) of 0.918 g / cm 3

in homogener Verteilung enthält.contains in homogeneous distribution.

Aus dieser Formmasse wird bei einer Massetemperatur von 230 C einAt a melt temperature of 230 ° C., this molding compound becomes a

Primärband mit reckteckigem Querschnitt (Querschnittsfläche = pPrimary tape with a rectangular cross-section (cross-sectional area = p

14,8 mm , Dicke = 0,9 mm) extrudiert und dieses Primärband bei einer Oberflächentemperatur von 1200C im Verhältnis 1 : 9 längsverstreckt. Es resultiert ein Band mit einer Querschnittsfläche von 1,65 mm und einer Dicke von 0,3 mm; seine Spleißneigung ist außerordentlich gering.14.8 mm, thickness = 0.9 mm) and this primary tape is longitudinally stretched at a surface temperature of 120 ° C. in a ratio of 1: 9. The result is a band with a cross-sectional area of 1.65 mm and a thickness of 0.3 mm; its tendency to splice is extremely low.

009828/ 18 5 A009828/18 5 A

BAD OFUQlNALBAD OFUQlNAL

Claims (2)

O.Z. 25 928 Patentanspruch Verwendung einer Polypropylen-Formmasse, dieO.Z. 25 928 Claim Use of a polypropylene molding compound which 1.) 100 Gewichtsteile Polypropylen mit einer Intrinsic-Viskosität Ul~] (gemessen in Dekalin bei 1300C) von 1 bis 9 und einer Dichte (nach DIN 53 **79) von 0,80 bis· 0,92 g/cm' sowie1.) 100 parts by weight of polypropylene with an intrinsic viscosity Ul ~] (measured in decalin at 130 ° C.) of 1 to 9 and a density (according to DIN 53 ** 79) of 0.80 to 0.92 g / cm ' as 2.) 1 bis 50 Gewichtsteile Polyäthylen mit einem Schmelzindex (nach DIN 53 735 - 19O°C/2,16 Kp) von 0,01 bis 2,0 und einer Dichte (nach DIN 53 ^79) von 0,916 bis 0,960 g/cm3 2.) 1 to 50 parts by weight of polyethylene with a melt index (according to DIN 53 735-19O ° C / 2.16 Kp) of 0.01 to 2.0 and a density (according to DIN 53 ^ 79) of 0.916 to 0.960 g / cm 3 in homogener Verteilung enthält, zum Herstellen längsverstreckter, schwerspleißbarer Bänder mit einer Querschnittsfläche von 0,02 bis HO mm und einer Dicke von 0,01 bis 3 mm.contains in a homogeneous distribution, for the production of longitudinally stretched, heavily splicable tapes with a cross-sectional area of 0.02 to HO mm and a thickness of 0.01 to 3 mm. Badische Anilin- & Soda-Fabrik AGBadische Anilin- & Soda-Fabrik AG 009828/1854009828/1854
DE19681813649 1968-12-10 1968-12-10 Use of a special polypropylene molding compound for the production of longitudinally stretched tapes that are difficult to splice Pending DE1813649A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19681813649 DE1813649A1 (en) 1968-12-10 1968-12-10 Use of a special polypropylene molding compound for the production of longitudinally stretched tapes that are difficult to splice
FR6942444A FR2025776A1 (en) 1968-12-10 1969-12-09 Polypropylene composn for prodn of - uniaxially drawn difficultly splitable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681813649 DE1813649A1 (en) 1968-12-10 1968-12-10 Use of a special polypropylene molding compound for the production of longitudinally stretched tapes that are difficult to splice

Publications (1)

Publication Number Publication Date
DE1813649A1 true DE1813649A1 (en) 1970-07-09

Family

ID=5715737

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19681813649 Pending DE1813649A1 (en) 1968-12-10 1968-12-10 Use of a special polypropylene molding compound for the production of longitudinally stretched tapes that are difficult to splice

Country Status (2)

Country Link
DE (1) DE1813649A1 (en)
FR (1) FR2025776A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2126349A1 (en) * 1971-02-26 1972-10-06 Montedison Spa

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2126349A1 (en) * 1971-02-26 1972-10-06 Montedison Spa

Also Published As

Publication number Publication date
FR2025776A1 (en) 1970-09-11

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