DE1504283A1 - Process for the production of a biaxially stretched shrink film made of polyvinyl chloride or copolymers of vinyl chloride with a heat seal layer - Google Patents

Process for the production of a biaxially stretched shrink film made of polyvinyl chloride or copolymers of vinyl chloride with a heat seal layer

Info

Publication number
DE1504283A1
DE1504283A1 DE19651504283 DE1504283A DE1504283A1 DE 1504283 A1 DE1504283 A1 DE 1504283A1 DE 19651504283 DE19651504283 DE 19651504283 DE 1504283 A DE1504283 A DE 1504283A DE 1504283 A1 DE1504283 A1 DE 1504283A1
Authority
DE
Germany
Prior art keywords
heat
copolymers
polyvinyl chloride
vinyl chloride
shrink film
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
DE19651504283
Other languages
German (de)
Inventor
Andersen Dr-Ing Heinz-Erhardt
Jacobi Dr Helmut
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.)
Hoechst AG
Original Assignee
Hoechst 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 Hoechst AG filed Critical Hoechst AG
Publication of DE1504283A1 publication Critical patent/DE1504283A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B29C55/023—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
    • B29C55/026—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets of preformed plates or sheets coated with a solution, a dispersion or a melt of thermoplastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • 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
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • 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
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/052—Forming heat-sealable coatings
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0049—Heat shrinkable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B2700/00—Machines, apparatus, tools or accessories for artistic work
    • B44B2700/04—Machines or tools for carving
    • 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
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Description

Beschrclbung 'Verfahren zur Herstellung einer biaxial gereckten SchrumPffolie aus Polyvinylchlorid oder Mischpolymerisaten des Vinyldii orid£mit heißsiegelscicht" Es sind normale Folien aus Polyvinylchlorid oder Miechpolymerisaten des Vinylchlorids bekannt, welche auf einer Seite eine dfinne, heißsiegelfähige Schicht tragen, die aus einer wäßrigen Dispersion eines geeigneten niederen Polymerisats, insbesondere Acrylsäuremischpolymerieaten, angetragen und durch Wärmeeinwirkung getrocknet und verfestigt ist. Es nd andererseits biaxial gereckte Folien aus Polyvinylchlorid oder Mischpolymerisaten des Vinylohlorids bekannt, welche als Schrumpffolien für Verpackungszwecke dienen. Diese Schrumpffolien werden nach Art eines Pakets um dae Verpackungegut herumgeschlagen, woraf die Packung einer kurzzeitigen Wärmeeinwirkung ausgesetzt wird. Dabei tritt spontan das starke Riickstellungsvermbgen der biaxial gereckten Folie in Wirkung, die Folie schrumpft ganz eng und fest um die Konturen des Verpackungsgutes herum. Eine solche biaxial gereckte Schrumpffolie läßt sich nicht mit einer der bekannten Heiß. siegelschichten versehen, weil die zum Aus trocknen und Verfestigen der aus wäßriger Dispersion aufgetragenen Heißsiegelschicht erforderliche Wärmebehandlung gleichzeitig auch unvermeidlich die sofortige Rückstellung der biaxial gereckten Schraumpffolie auslöst. Die Folie büßt also den für ihre bestimmungsgemäße Verwendung entscheidenden Zuetand innerer Spannung vorzeitig ein und ist nicht mehr schrumpffähig.Description Process for the production of a biaxially stretched shrink film of polyvinyl chloride or copolymers of vinyl dioride £ with a heat seal layer " They are normal foils made of polyvinyl chloride or synthetic polymers of vinyl chloride known, which carry a thin, heat-sealable layer on one side, the from an aqueous dispersion of a suitable lower polymer, in particular Acrylic acid copolymers, applied and dried by the action of heat and is solidified. On the other hand, there are biaxially oriented films made of polyvinyl chloride or copolymers of vinyl chloride known, which are used as shrink films for Serve packaging purposes. These shrink films are packaged around dae Wrap around the packaging well, causing the pack to briefly expose to heat is exposed. The strong restraint of the biaxial occurs spontaneously stretched film in effect, the film shrinks very tightly and firmly around the contours of the packaged goods around. Such a biaxially stretched shrink film can be not with any of the known hot. sealing layers because they dry out and solidifying the heat-sealing layer applied from an aqueous dispersion Heat treatment at the same time also inevitable the immediate recovery of the biaxial stretched shrink film triggers. So the film loses for its intended use Use crucial condition of inner tension prematurely and is no more shrinkable.

Für gewisse anwendngsbereiche, die eine luftdichte Verpaokung erfordern, ist aber eine heißseigelfäige biaxial gereckte Folie erwi1nscht, Gegenstand der Erfindung ist ein Verfahren zur Herstellung einer biaxial gereckten Schrumpffolie aus Polyvinylchlorid oder Mischpolymerisaten des Vinylchlorids mit Heißsiegel-*schicht, welches dadurch gekennzeichnet ist, daß man auf eine normale Folie aus Polyvinylchlorid oder einem Mischpolymerisat des Vinylchlorids, gegebenenfalls mit kleineren Zusätzen von Weichmachern, aus einer wäßrigen Dispersion oder in organischen Lösungsmitteln gelöster heißsiegelfähigen Mischpolymerisate in an sich bekannter Weise eine Heißsiegelschicht aufträgt und durch Einwirkung von Wärme trocknet und verfestigt, und daß man dann die Heißsiegelschicht tragende Folie einer biaxialen Reckung unterzieht.For certain areas of application that require airtight packaging, but if a hot seal-like biaxially stretched film is desired, object The invention is a method for producing a biaxially stretched shrink film made of polyvinyl chloride or copolymers of vinyl chloride with a heat seal * layer, which is characterized in that one is on a normal film made of polyvinyl chloride or a copolymer of vinyl chloride, optionally with minor additives from plasticizers, from an aqueous dispersion or in organic solvents dissolved heat-sealable copolymers form a heat-sealing layer in a manner known per se applies and by the action of heat dries and solidifies, and that one then subjecting the film carrying the heat-sealable layer to biaxial stretching.

Geeignete Folien sind insbesondere Kalanderfolien aus Polyvinylchlorid oder Mischpolymerisaten aus mindestens 50 %, vorzugsweise 80 % vinlchlorid mit anderen zur Mischpolymerisaton befähigten Vinylverbindungen, insbesondere Estern der Acrylsäuren, Vinylacetat, Vinylidenchlorid, Styrol. Suitable foils are, in particular, calender foils made from polyvinyl chloride or copolymers of at least 50%, preferably 80% vinyl chloride with others vinyl compounds capable of mixed polymerisation, in particular esters of acrylic acids, Vinyl acetate, vinylidene chloride, styrene.

Die Folien können bis zu 12 oder 15 bekannter handelsiiblicher Weichmacher, wie Dioctylphthalat, Adipinsäureester enthalten, neben üblichen Mengen bekannter Gleitmittel, sowie Pigmenten. Farbstoffen, Füllstoffen und dgl. Die Bezeichnung-als normale Folie bedeutet, daß die Auagangsfolie noch nicht einer biaxialen Reckung unterzogen ist und daher des die SchrumDffolie kennzeichnende RUckstell- vermögen@aufweist.The films can contain up to 12 or 15 known commercially available plasticizers, such as dioctyl phthalate, adipic acid ester, in addition to the usual amounts of known lubricants and pigments. Dyes, fillers and the like. The designation - as normal film means that the initial film has not yet been subjected to biaxial stretching and therefore the reset characteristic of the shrink film. property @ has.

Zur Bildung der Heißsiegelschicht dient ein Auftrag aus einer der bekannten Lösungen oder Dispersionen von PolyacrylsAureestern, wie Methylester, Ätylester, N-Butylester oder Mischpolymerisaten von Acrylsäureestern mit Vinylacryläthern, beispielsweise Acrylsäurebutlester und VinJlisobutyläther. Die Lösungen und Dispersianen können 20%ig bis 30%ig der auch 45 bis 55%ig sein (vgl. Römpp, Chemie-Lexikon, 4. Auflage, Band 1, Spalte 33, Acronale (eingetragenes Warenzeichen)).To form the heat-sealing layer, an application from one of the known solutions or dispersions of polyacrylic acid esters, such as methyl esters, Ethyl esters, n-butyl esters or copolymers of acrylic acid esters with vinyl acrylic ethers, for example acrylic acid butl ester and vinyl isobutyl ether. The solutions and dispersians can be 20% to 30% or 45 to 55% (see Römpp, Chemie-Lexikon, 4. Edition, Volume 1, Column 33, Acronale (registered trademark)).

Das Trocknen der aufgetragenen Heißsiegelschicht erfolg in bekannter Weise mit Warmluft oder strahlender Warme ei Temperaturen von etwa 60 bis 800.The applied heat-sealing layer is dried in a known manner With warm air or radiant warmth, temperatures of around 60 to 800.

Sowohl die Ausgangsfolien wie die Heißsiegellösungen bzw, -Dispersionen sind solche des Stands der Technik, die im Handel erhältlich sind. Die Erfindung liegt in dem Kunetv griff, die Ausgangsfolie zuerst mit der Heißsiegelschioht zu versehen und erst danach der biaxialen Reckung zu unterwerfen. Both the starting films and the heat-sealing solutions or dispersions are those of the prior art that are commercially available. The invention is in the Kunetv handle, the starting film with the heat seal first provided and only then to be subjected to biaxial stretching.

Es war nicht vorauszusehen, daß die bekannten und üblichen Heißsiegelschichten die biaxiale Reckung der sie tragenden Polyvinylchlorid-Folie aushalten und mitmachen, eo daß nur ihre Schichtdicke entsprechend dem gewählten Maß der Reckung sich gleichförmig über die ganze Fläche vermindert, da' die Heißsiegelschichten@teinerseite außerordentlich dünn eind und andererseits aus Mischpolymerisaten bestehen, aus denen üblicherweise keine selbsttragenden Folien hergestellt werden, mußte vielmehr befürchtet werden, daß die Heißsiegelschicht bei dem Vorgang der b@axialen Nachreckung reißen oder in irgendeiner anderen Weiee beeinträchtigt werden wUrde. It was not foreseeable that the known and customary heat seal layers withstand and participate in the biaxial stretching of the polyvinyl chloride film that carries them, eo that only their layer thickness is uniform according to the selected degree of stretching Reduced over the entire surface, since the heat-sealing layers are extraordinary thin one and on the other hand consist of copolymers from which usually no self-supporting foils are produced, it was rather feared, that the heat-sealing layer tear in the process of b @ axial post-stretching or would be affected in any other way.

Die neue, biaxial gereckte heißuiegelfähige Schrumpffolie der Erfindung bewährt sich hervorragend in der Herstellung luftdichter aufgeschrumpfter Verpackungen. Bei der zur Aulösung des Aufechrumpfens angewendeten kurzzeiteigen Wärmebehandlung versiegelt sich gleichzeitig die Heißsiegelschicht an den Überlappungslächen sauber. gleichförmig und dicht. The new, biaxially stretched heat sealable shrink film of the invention has proven itself excellently in the production of airtight shrink-on packaging. In the short-term heat treatment used to dissolve the shrinking At the same time, the heat-sealing layer seals itself neatly on the overlapping areas. uniform and dense.

Claims (1)

P a t e n t a n s p r u c h Verfahren zur Herstellung einer biaxial gereckten Schrumpffolie us Polyvinylchlorid oder Mischpolymerisaten des Vinyiehl'rids mit Helßeiegelschicht, dadurch gekennzeichnet, daß man auf eine normale Folie aus Polyvinylchlorid oder einem Mischpolymerisat des Vinylchlorids, gegebenenfalls mit kleineren Zusätzen von Weichmachern, aus einer wäßrigen Dispersion oder in organischen Lösungsmitteln geloster heißsiegelfähiger Mischpllymerisate in an sich bekannter Weise eine Heißsiegelschicht aufträgt und durch Einwirkung von Wirme trocknet und verfestigt, und daß man dann die die Heißsiegelschicht tragende Folie einer biaxialen Reckung unterzieht.P a t e n t a n s p r u c h Process for producing a biaxial stretched shrink film from polyvinyl chloride or copolymers of vinyl chloride with a heat seal layer, characterized in that a normal film is used Polyvinyl chloride or a copolymer of vinyl chloride, optionally with Smaller additions of plasticizers, from an aqueous dispersion or in organic Solvent-dissolving heat-sealable mixed polymerizates in per se known Way applies a heat-sealing layer and by the action of Wirme dries and solidified, and that one then the film carrying the heat-sealing layer of a biaxial Undergoes stretching.
DE19651504283 1965-12-30 1965-12-30 Process for the production of a biaxially stretched shrink film made of polyvinyl chloride or copolymers of vinyl chloride with a heat seal layer Pending DE1504283A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0048054 1965-12-30

Publications (1)

Publication Number Publication Date
DE1504283A1 true DE1504283A1 (en) 1969-12-11

Family

ID=7102007

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19651504283 Pending DE1504283A1 (en) 1965-12-30 1965-12-30 Process for the production of a biaxially stretched shrink film made of polyvinyl chloride or copolymers of vinyl chloride with a heat seal layer

Country Status (5)

Country Link
BE (1) BE692029A (en)
CH (1) CH451491A (en)
DE (1) DE1504283A1 (en)
ES (1) ES334995A1 (en)
FR (1) FR1507041A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6270024A (en) * 1985-09-25 1987-03-31 Shin Etsu Chem Co Ltd Heat-shrinkable polyvinyl chloride resin molded part and manufacture thereof
DE3602629A1 (en) * 1986-01-29 1987-07-30 Hoechst Ag BITUMINOESE ROOF WELDING RAIL AND METHOD FOR THEIR PRODUCTION

Also Published As

Publication number Publication date
CH451491A (en) 1968-05-15
BE692029A (en) 1967-06-30
ES334995A1 (en) 1968-05-01
FR1507041A (en) 1967-12-22

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