FR2691436A1 - Stretch cling film for food packaging - made by extrusion of a mixt. of a styrene]-butadiene]-styrene] copolymer and a sequenced styrene]-butadiene] copolymer - Google Patents
Stretch cling film for food packaging - made by extrusion of a mixt. of a styrene]-butadiene]-styrene] copolymer and a sequenced styrene]-butadiene] copolymer Download PDFInfo
- Publication number
- FR2691436A1 FR2691436A1 FR9206320A FR9206320A FR2691436A1 FR 2691436 A1 FR2691436 A1 FR 2691436A1 FR 9206320 A FR9206320 A FR 9206320A FR 9206320 A FR9206320 A FR 9206320A FR 2691436 A1 FR2691436 A1 FR 2691436A1
- Authority
- FR
- France
- Prior art keywords
- styrene
- copolymer
- butadiene
- extrusion
- good
- 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.)
- Withdrawn
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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
-
- 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
- C08J2353/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2353/02—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
La présente invention concerne un film étirable alimentaire autoadhésif par effet caoutchoutique ayant de bonnes caractéristiques optiques et mécaniques, sans déformation résiduelle, obtenu par extrusion d'un mélange de
copolymère styrène-butadiène-styrène et de copolymère séquencé styrène
butadiène, composé de la façon suivante:
a) de 5 à 50 % en poids de copolymère styrène-butadiène-styrène et
b) de 50 à 95 to en poids de copolymère séquencé styrène-butadiène,
ces copolymères ayant une densité de 0,950 à 1,01 g/cm3.The present invention relates to a self-adhesive food stretch film by rubber effect having good optical and mechanical characteristics, without residual deformation, obtained by extrusion of a mixture of
styrene-butadiene-styrene copolymer and styrene block copolymer
butadiene, composed as follows:
a) from 5 to 50% by weight of styrene-butadiene-styrene copolymer and
b) from 50 to 95% by weight of styrene-butadiene block copolymer,
these copolymers having a density of 0.950 to 1.01 g / cm3.
De préférence, le composant a) est présent dans le mélange à raison de
25 à 40 % en poids, et de préférence encore à raison de 8 à 15 % en poids. Le film
obtenu peut avoir une épaisseur de 10 à 40 zm. Preferably, component a) is present in the mixture at a rate of
25 to 40% by weight, and more preferably 8 to 15% by weight. The film
obtained can have a thickness of 10 to 40 zm.
Ce film permet d'emballer des produits alimentaires et de grande consommation qui actuellement sont conditionnés sous film PVC. This film is used to package food and consumer products which are currently packaged in PVC film.
Les caractéristiques techniques de ce film sont les suivantes:
a) de bonnes qualités optiques,
b) une bonne perméabilité,
c) une grande étirabilité,
d) une bonne usinabilité,
e) aucune déformation résiduelle.The technical characteristics of this film are as follows:
a) good optical qualities,
b) good permeability,
c) high stretchability,
d) good machinability,
e) no residual deformation.
Ce film peut être obtenu par extrusion-soufflage : filière annulaire c par extrusion de feuille à plat : filière plate. This film can be obtained by extrusion-blowing: annular die c by flat sheet extrusion: flat die.
DONNEES TECHNIQUES RELATIVES AU MELANGE: COPOLYMèRE STYRENE-BUTADIENE-STYRENE :
Densité (g/cm3) : 1,01
Indice de fusion (g/10 min) : 13 (DIN 53735)
VICAT VST/B/50 ( C) : 60 (DIN 53460)
Résistance à la traction (N/mm2) : 26 (DIN 52455)
Allongement à la rupture (No) :250 (DIN 52455)
Copolymère séquencé styrène-butadiène:
Densité (g/cm3) :0,95
Indice de fusion (g/10 min) : 190'C 2160 kp (ASTM-E) 2,6
Viscosité :28/30 CARACTERISOUES D'EXTRUSION:
Si on utilise 40 % en poids du mélange du copolymère a) et 60 % du copolymère b), il faut une température d'extrusion, par vis hélicoïdale, de 200 C, pour obtenir une bonne homogénéisation.TECHNICAL DATA RELATING TO THE MIXTURE: STYRENE-BUTADIENE-STYRENE COPOLYMER:
Density (g / cm3): 1.01
Melting index (g / 10 min): 13 (DIN 53735)
VICAT VST / B / 50 (C): 60 (DIN 53460)
Tensile strength (N / mm2): 26 (DIN 52455)
Elongation at break (No): 250 (DIN 52455)
Styrene-butadiene block copolymer:
Density (g / cm3): 0.95
Melting index (g / 10 min): 190'C 2160 kp (ASTM-E) 2.6
Viscosity: 28/30 EXTRUSION CHARACTERISTICS:
If 40% by weight of the mixture of the copolymer a) and 60% of the copolymer b) are used, an extrusion temperature, by helical screw, of 200 ° C. is required to obtain good homogenization.
Le mélange ainsi homogénéisé permet une production de 90 kg/h pour une vitesse d'enroulement de 40 m/min. The mixture thus homogenized allows a production of 90 kg / h for a winding speed of 40 m / min.
A la sortie de la filière, le film est refroidi par air à une température. de 15'C. At the exit of the die, the film is air-cooled to a temperature. 15'C.
Le rapport du taux de gonflage est de 1 : 2,5. The ratio of the inflation rate is 1: 2.5.
Le film ainsi obtenu, par extrusion-soufflage, est d'une épaisseur de 15In. The film thus obtained, by extrusion blow molding, has a thickness of 15 In.
CARACTERISTIOUES DU FILM:
(Indice de fusion) (g/10 min) : 2,7
(ASTM - D 1238)
Densité (g/cm3) :0,974
(ASTM - D 1505)
Résistance à la traction (kg/cm2) : 153 (ASTM-D412)
Allongement à la rupture en % : 1050 (ASTM-D412)
Déformation restante après rupture en % : 47
(ASTM - D 412)
Flexibilité à basses températures CC) : -45
(ASTM 1053) CHARACTERISTIOUES OF THE FILM:
(Melting index) (g / 10 min): 2.7
(ASTM - D 1238)
Density (g / cm3): 0.974
(ASTM - D 1505)
Tensile strength (kg / cm2): 153 (ASTM-D412)
Elongation at break in%: 1050 (ASTM-D412)
Deformation remaining after rupture in%: 47
(ASTM - D 412)
Flexibility at low DC temperatures): -45
(ASTM 1053)
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9206320A FR2691436A1 (en) | 1992-05-22 | 1992-05-22 | Stretch cling film for food packaging - made by extrusion of a mixt. of a styrene]-butadiene]-styrene] copolymer and a sequenced styrene]-butadiene] copolymer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9206320A FR2691436A1 (en) | 1992-05-22 | 1992-05-22 | Stretch cling film for food packaging - made by extrusion of a mixt. of a styrene]-butadiene]-styrene] copolymer and a sequenced styrene]-butadiene] copolymer |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2691436A1 true FR2691436A1 (en) | 1993-11-26 |
Family
ID=9430108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9206320A Withdrawn FR2691436A1 (en) | 1992-05-22 | 1992-05-22 | Stretch cling film for food packaging - made by extrusion of a mixt. of a styrene]-butadiene]-styrene] copolymer and a sequenced styrene]-butadiene] copolymer |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2691436A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0771641A3 (en) * | 1995-11-01 | 1997-12-03 | Shell Internationale Researchmaatschappij B.V. | Process to prepare a blown film of a block copolymer composition |
DE102016122818A1 (en) | 2016-11-25 | 2018-05-30 | Waldemar Schmidt | Co-extruded PVC food packaging film and process for its production |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52115855A (en) * | 1976-03-24 | 1977-09-28 | Gunze Kk | Biaxially oriented heat shrinkable polystylene film havig lowwtemperature shrinking property and colddresistance |
JPS52117947A (en) * | 1976-03-31 | 1977-10-03 | Asahi Chem Ind Co Ltd | High-impact styrene resin compositions |
GB2168362A (en) * | 1984-12-17 | 1986-06-18 | Bcl Ltd | Compositions for packaging films |
-
1992
- 1992-05-22 FR FR9206320A patent/FR2691436A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52115855A (en) * | 1976-03-24 | 1977-09-28 | Gunze Kk | Biaxially oriented heat shrinkable polystylene film havig lowwtemperature shrinking property and colddresistance |
JPS52117947A (en) * | 1976-03-31 | 1977-10-03 | Asahi Chem Ind Co Ltd | High-impact styrene resin compositions |
GB2168362A (en) * | 1984-12-17 | 1986-06-18 | Bcl Ltd | Compositions for packaging films |
Non-Patent Citations (2)
Title |
---|
DATABASE WPI Week 7745, Derwent Publications Ltd., London, GB; AN 77-80267Y & JP-A-52 115 855 (GUNZE) 28 Septembre 1977 * |
DATABASE WPI Week 7746, Derwent Publications Ltd., London, GB; AN 77-81818Y & JP-A-52 117 947 (ASAHI CHEMICAL IND. K.K.) 3 Octobre 1977 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0771641A3 (en) * | 1995-11-01 | 1997-12-03 | Shell Internationale Researchmaatschappij B.V. | Process to prepare a blown film of a block copolymer composition |
DE102016122818A1 (en) | 2016-11-25 | 2018-05-30 | Waldemar Schmidt | Co-extruded PVC food packaging film and process for its production |
WO2018095847A1 (en) | 2016-11-25 | 2018-05-31 | SCHMIDT, Natalya | Coextruded pvc-based food packaging film and method for producing same |
US11447315B2 (en) | 2016-11-25 | 2022-09-20 | Waldemar Vladimir SCHMIDT | Co-extruded plasticized PVC-based packaging films and method for its production |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5667902A (en) | High moisture barrier polypropylene-based film | |
JP5134002B2 (en) | Barrier film for food packaging | |
US9352536B2 (en) | Label film | |
CN100509928C (en) | Polypropylene blown film | |
ATE492596T1 (en) | POLYETHYLENE MOLDING COMPOUND FOR PRODUCING BLOWN FILM WITH IMPROVED MECHANICAL PROPERTIES AND IMPROVED PROCESSABILITY | |
ATE463530T1 (en) | POLYETHYLENE MOLDING COMPOSITION FOR PRODUCING BLOWN FILM WITH IMPROVED PROCESSABILITY | |
MX2010013666A (en) | Method to produce matte and opaque biaxially oriented polylactic acid film. | |
JP6237644B2 (en) | Wrap film | |
JPH0222033A (en) | Low temperature heat-shrinkable film | |
AU627180B2 (en) | A composition comprising polymers of but-1-ene and propylene | |
AU752568B2 (en) | Bioriented polyethylene film with a high water vapor transmission rate | |
EP1439957B1 (en) | Non-oriented polypropylene film | |
US20170282507A1 (en) | Biaxially oriented polyolefin film with high moisture vapor barrier and stiffness properties | |
FR2691436A1 (en) | Stretch cling film for food packaging - made by extrusion of a mixt. of a styrene]-butadiene]-styrene] copolymer and a sequenced styrene]-butadiene] copolymer | |
JP2006117956A (en) | Easily tearable cast film | |
CA2262081C (en) | Opaque films comprising isotactic polypropylene | |
KR20040099865A (en) | Polypropylene composition provided by the calendering process for transparent film and sheet, and method for preparing polypropylene transparent film and sheet using the same | |
US7365117B2 (en) | Polyethylene formulations | |
JP4209047B2 (en) | Polyamide film with improved slip and method for producing the same | |
JPH1052849A (en) | Cast film of easy tearability | |
US20030166778A1 (en) | Micro-composite polymer/polymer materials with semicrystalline dispersed phase and preparation method | |
JP2002506755A (en) | Thermoplastic polyesteramide film made of at least two layers and having improved bonding properties, method of making the same and use thereof | |
CN114773711A (en) | Anti-puncture PE film and preparation method thereof | |
KR20010009327A (en) | A lusterless multi-layered film and the process thereof | |
JP2001187432A (en) | Biodegradable and thermoplastic multi-layer film and its manufacturing method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse | ||
ST | Notification of lapse |