EP0658177A1 - Composition de film polyolefinique imprimable, brillant et transparent - Google Patents

Composition de film polyolefinique imprimable, brillant et transparent

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Publication number
EP0658177A1
EP0658177A1 EP94922038A EP94922038A EP0658177A1 EP 0658177 A1 EP0658177 A1 EP 0658177A1 EP 94922038 A EP94922038 A EP 94922038A EP 94922038 A EP94922038 A EP 94922038A EP 0658177 A1 EP0658177 A1 EP 0658177A1
Authority
EP
European Patent Office
Prior art keywords
film
weight percent
layer
ink
composition
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Withdrawn
Application number
EP94922038A
Other languages
German (de)
English (en)
Other versions
EP0658177A4 (fr
Inventor
François Jacques Frédéric REGNIER
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of EP0658177A1 publication Critical patent/EP0658177A1/fr
Publication of EP0658177A4 publication Critical patent/EP0658177A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
    • 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
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions 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
    • C08L23/04—Homopolymers or copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions 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
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • 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
    • C08L53/025—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 modified
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/75—Printability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2519/00—Labels, badges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/504—Backcoats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/508—Supports
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2310/00—Masterbatches
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
    • 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

Definitions

  • This invention relates to polyolefinic polymer compositions having improved ⁇ proDerties
  • this invention relates to improving the receptivity or adhesion of printing inks to the surface of shaped articles made from such polyolefinic polymer compositions
  • Polyolefinic polymers in particular ethylene polymers such as polyethylene are used for forming shaped articles such as sheets, films, tubes, bottles, containers, etc therefrom
  • polyethylene has, and consequently articles made thereof have, an extremely smooth hydrophobic surface which is unreceptive to most common types of printing inks and dyes and thus it is difficult to print the surface of polyethylene articles.
  • ethylene polymers more receptive to printing inks.
  • surface treating tecnniques which have been developed to improve the receptivity of the polymer surface to printing inks including chemical treatment with oxidizing agents such as chlorine and strong acids and electronic, or corona discharge treatment of the polymer surface. Flame treatment of the surface of polyethylene has also been used to make the polyethylene more receptive to printing inks.
  • top printable layer or printable skin layer of the film is described as being made from materials such as ethylene acrylic acid, ethylene methyl acrylic acid, ethylene ethyl acryiate, ethylene methyl acryiate, acrylonitrile butadiene styrene, nylon, polybutyiene, polystyrene, polyurethane, poiysulfone, polyvinylidene chloride, polypropylene, polycarbonate, polymethyl pentene, styrene maleic anhydride, styrene acrylonitrile, ionomers based on sodium or zinc salts of ethylene/methacrylic acid, acrylics, cellulosics, fluoroplastics, nitriles and thermoplastic polyesters.
  • Still another method used to improve the receptivity of a polymer surface to printing inks is to form a novel polymeric composition which has as one of its improved properties an enhanced receptivity to printing ink.
  • articles, such as a monolayer film, made from said composition would have the improved property of enhanced receptivity to printing ink.
  • an ethylene poiymer composition having excellent receptivity to printing inks after surface treatment by incorporating in the ethylene poiymer an N-substituted unsaturated carboxylic amide
  • polyolefin compositions having improved adhesion to water based inks have been made by incorporating into the polyolefin an effective amount of a lactamide. .
  • An object of the present invention is to impart the desired p ⁇ ntability and adhesion to printing inks to polyolefin compositions without adversely affecting the optical properties of the polyolefin Summary of the Invention
  • One aspect of the present invention is directed to a composition which can be used to make a film that combines excellent pnntability with excellent optical properties.
  • the composition is obtained by blending into a polyolefin a minor portion of a polymeric additive which does not deteriorate the optical properties of the polyolefin.
  • composition of the present invention includes a polyolefin material with a polymeric additive having double bonds or having double bonds and a polystyrene present in its chemical structure; or an anhydride modified polyolefin. Another aspect of the present invention is directed to a film made of the above composition.
  • Still another aspect of the present invention is preparing a film including the steps of
  • Figure 1 is an enlarged partial cross-sectional view of one embodiment of a film structure of the present invention.
  • Figure 2 is an enlarged partial cross-sectional view of another embodiment of a film structure of the present invention.
  • Figure 3 is an enlarged partial cross-sectional view of one embodiment of a pressure-sensitive adhesive film structure useful for making labels in accordance with the present invention.
  • Figure 4 is an enlarged partial cross-sectional view of another embodiment of a pressure-sensitive adhesive film structure useful for making labels in accordance with the present invention.
  • composition of the present invention includes a polyolefinic polymer and a polymeric additive referred to herein as an "ink printability enhancer" (“IPE”).
  • the polyolefinic polymer includes for example low-density polyethylene (LDPc), linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), a high-density polyethylene (HDPE), polypropylene (PP), propylene-ethylene copolymers, or mixtures of such materials or mixtures which contain such materials.
  • LDPc low-density polyethylene
  • LLDPE linear low density polyethylene
  • MDPE medium density polyethylene
  • HDPE high-density polyethylene
  • PP polypropylene
  • propylene-ethylene copolymers or mixtures of such materials or mixtures which contain such materials.
  • the IPE is selected from a material which, in general, contains double bonds or double bonds and a polystyrene in the IPE's chemical structure or an anhydride modified polyolefin. Also, the IPE should not adversely affect the optical properties of composition. For example, the IPE should not increase haze by more than 5 percent (absolute units) as measured according to ASTM D-1003 and/or should not decrease the 60 degree gloss by more than 5 percent (absolute units) as measured according to ASTM D-2457.
  • the IPE is selected from the group comprising styrenic block copolymers, modified polyolefins and polyolefin polymers containing some degree of unsaturation or mixtures thereof.
  • the styrenic block copolymers used as the IPE in the present invention include, for example, styrene-isoprene-styrene (SIS), styrene-butadiene-styrene (SBS) of a grade having lower than 40 weight percent styrene, styrene-ethylene-butylene-styrene (SEBS), styrene-isoprene (SI), SIS/styrene-isoprene blend compositions and mixtures thereof.
  • SIS styrene-isoprene-styrene
  • SBS styrene-butadiene-styrene
  • SEBS styrene-ethylene-but
  • the polymeric polyolefins using some degree of unsaturation include, for example, polybutadiene, ethylene-propylene-diene copolymers (EPDM), poly ⁇ soprene, transpolyoctenamer and mixtures thereof.
  • the modified poiyolefins include, for example, anhydride modified polyethylenes such as maleic anhydride containing olefin polymers and copolymers such as those polymers commercially available under the trademark ADMER ® (trademark of Mitsui Petrochemicals) and styrene maleic anhydride and mixtures thereof.
  • the preferred IPE used in the present invention is SIS or mixtures containing SIS.
  • the IPE is present in an amount of from 3 weight percent to 50 weight percent, preferably from 5 weight percent to 30 weight percent; and more preferably from 7 weight percent to 25 weight percent, with the remainder of the composition being the polyolefinic polymer, that is, the composition generally contains from 50 weight percent to 97 weight percent, preferably from 70 weight percent to 95 weight percent; and more preferably from 75 weight percent to 93 weight percent polyolef i n.
  • Other additives can also be blended into the composition.
  • Other optional additives that can be added to the composition of the present invention include for example, antioxidants, antiblocks, antistatic additives, processing aids, inorganic fillers, UV stabilizers, slip additives and pigments.
  • the amount of optional additive that can be used in the present composition will vary depending on the properties desired and effect desired Usually one or more optional additives may be present in the composition in an amount of from 0 001 weight percent to 15 weight percent for each additive individually
  • the composition can include from 0 1 to 0 5 weight percent of the nucleator or clarifying agent
  • a filler such as calcium carbonate, talcum, silicon dioxide, chalk or other filler may be used, and the amount can be from 1 to 6 weight percent
  • a pigment may be used in an amount of from 0 1 weight percent to 15 weight percent and still maintain the property of ink printability
  • Processing aids that may be blended in the composition may include, for example, Viton ® from Du Pont, Dynamar 0 from 3M or Ucarsil ® PA from Union Carbide which are all preferably added below 1 weight percent
  • polyolefin, IPE and other optional additives can be blended by well known techniques into the art such as by tumble blending or separately feeding into an extruder hopper
  • composition of the present invention can be used to make several forms, including, for example, film, sheet or shaped articles by known processes.
  • the processes include, for example, blow molding, compression molding, and injection molding
  • extrusion processes such as cast or blow processes may be used
  • sheet is defined (page 52C) as a flat section of a thermoplastic resin with the length considerably greater than the width and 10 mils or greater in thickness
  • Film is defined (page 43) as an optional term for sheet having a nominal thickness not greater than 0 010 inches.
  • a monolayer film and a multilayer film product wiil be described herein below using the composition of the present invention
  • a monolayer fiim can be made by various conventional film forming processes including for example, a cast film process, a blown film process, oriented film process and other extrusion processes or coating processes.
  • a multilayer film may be made by processes commonly used for manufacturing a multilayer film including, for example, coextrusion, extrusion-coating, calendering and lamination. For making a multilayer film, coextrusion is preferred, because then the multilayer film product can be obtained in one step
  • the multilayer film comprises a coextruded film structure containing at least one of its external or outer layers made of the composition of the present invention
  • Any film structure such as A B, A B/A or A/B/C layered structures is possible, provided that at least one of the outer layers or skin layers of the multilayer film is made of the present composition
  • Figure 1 there is shown a two-layer film 10, comprising an outer layer 1 1 made of the blend composition of the present invention and an inner adjacent layer 12 of one or more polymers
  • Layer 12 can be made of any polymer resin which will adhere to the outer layer 1 1 including, for example, EVA, EAA, EMA, EMAA, EBA, lonomers, modified polyolefins, and polyolefin materials such as LDPE, MDPE, HDPE, LLDPE, PP or blends thereof
  • composition of the present invention as one of the layers in a film structure (layer 1 1 in Figure 1 ), is the recydability of the layer Any reg ⁇ nd, scrap or unused excess material can be reprocessed by reintroducing the material, as recycle, back into the layer made of the present composition or back into another layer of the film without significantly affecting the properties of the film
  • recycle material generally from one percent by weight to 50 percent by weight of the recycle material can be added back into the layer
  • a multilayer film structure 20 of the present invention in this case a three-layer structure, including two outer layers or skin layers 21 with a core layer 22 sandwiched between the two skin layers 21
  • the skin layers 21 are made of the aforementioned composition of the present invention
  • the core layer 22 can be made of any of the same resins for iayer 1 1 and preferably a polyolefin material such as LDPE, MDPE, HDPE, LLDPE, PP or blends thereof Also, any of the aforementioned optional additives used for the com position of layer 11 can be used in any of the other layers 12 or 21 of the film
  • the overall thickness of the film of the present invention can be from 5 microns to 200 microns, preferably from 50 to 150 microns
  • the skin layer is from 2 percent to 25 percent of the total thickness of the film, preferably from 5 percent to 20 percent of the total thickness of the film
  • At least one of the surfaces of the film, intended to be printed is treated by a corona discharge treatment to bring the film's surface tension above 40 milli newton per meter (mN/m), preferably above 50 mN/m as measured according to ASTM D-2578
  • the corona discharge treatment is applied to at least one surface of the film
  • the corona discharge treatment is well known in the art and described for example in surface properties and testing, Plastics & Polymers, April 1969, pages 138-142
  • corona treatment alone, increases the surface tension of the film layer treated to improve the spreading of the ink on the film surface
  • the composition of the present invention, in conjunction with corona treatment or any other surface treatment of the film further advantageously enhances the adhesion of the ink on the film without significant loss of optical properties of
  • the monolayer or multilayer films can be used as stock material for manufacturing labels, signs, displays, tags, posters, stickers.
  • the film label stock can be used for making in-mold labels, pressure-sensitive labels and wrap around labels, sleeves and shrink sleeves.
  • One embodiment of this invention of particular interest relates to polyolefinic fiims useful for making glossy, or glossy and transparent, and ink-printable pressure-sensitive labels.
  • the clear polyolefinic films made of medium to high density polyethylene fiim and . pressure-sensitive labels made from polyethylene film are typically used in labeling bottles.
  • Multilayered label films are commonly produced by coating a polyolefin film with an ink-printable acrylic polymer, or coextruding or laminating the polyolefin film with a iayer of ink-printable polymer.
  • the composition of the present invention can be used to produce in one step polymeric films based on olef inic poiymers without use of a top coat or ink printable layer.
  • a monolayer film made from the present composition provides excellent printability without a significant loss of other film properties such as optical properties such as low haze and high gloss.
  • a preferred embodiment of the present invention is to make a multilayer film wherein one of the outer layers or skin layers of the film is made of the composition of the present invention.
  • a pressure-sensitive film stock 30 is illustrated in Figure 3 which includes a single skin iayer 11 on the outer side of a core layer 12 and a pressure-sensitive adhesive iayer 31 directly adjacent the inner side of the core layer 12.
  • the pressure-sensitive adhesive used for layer 31 may be any conventional pressure-sensitive adhesive such as acylic and styrene butadiene.
  • the fiim stock 30 is preferably used for the manufacture of pressure-sensitive labels.
  • Figure 4 shows another embodiment of a multilayer pressure-sensitive film stock 40 including two skin layers 21 with a core layer 22 and an adhesive layer 31 attached to at least one of the skin layers 21.
  • a film composition is formed wherein the composition comprises at least one polyolefin material and at least one polymeric additive which enhances the ink printability property of the composition while not adversely affecting the optical properties of the composition.
  • a film from the composition is formed, for example, by coextrusion techniques.
  • An electrical discharge treatment may be applied to at least one surface of the resultant film to raise the surface tension of the resultant film.
  • the ink printability of a multilayer film is enhanced.
  • the skin layer of the multilayer film can be printed with various printing systems.
  • print techniques useful herein include silk screen printing, rotogravure, letter press, offset, flexographic printing, stipple printing, cold fixing laser printing, copperplate printing.
  • inks can also be selected for use in the present invention including, for example, one and two component inks, oxidativeiy or UV-drying inks, dissolved or dispersed or 100% ink systems. Many combinations of film/printing, ink/printing techniques are possible.
  • Charge “I” of a film forming resin is prepared comprising X weight percent of a polymeric resin referred to below as “Resin A”, Y percent of a polymeric additive referred to below as “Additive B” and Z percent of one or more polyolefin resins referred to below as “Resin Composition C”. Then Charge “II” of a film forming resin composition comprising one or more polyolefin resins is prepared.
  • Both the "I” and “II” Charges are fed into extruders and coextruded to form a three-layered film with a l/ll/l layer structure.
  • the total thickness of the film structure is T and the thickness of each layer of Charge I is T1.
  • An electrical "corona” discharge treatment is applied on one or both surfaces of the film to raise its surface tension.
  • the resulting film has excellent optical properties (similar haze and gloss as films consisting essentially of polyolefin), and has excellent ink-printability without the need to add any substrate onto the film's surface.
  • Example 1 A coextruded three-layer film having a l/ll/l layer structure was manufactured according to the above General Procedure. Charge I included Resin A, Additive B and Resin Composition C.
  • Resin A was 7 weight percent of a styrene-isoprene-styrene copolymer (SIS) having a melt index (Ml) of 9.0 grams per 10 minutes (g/10 min) (200 degrees centigrade (0°)/5 kilograms (kg)) and containing 85 weight percent of polymerized isoprene.
  • SIS styrene-isoprene-styrene copolymer
  • Additive B was 5 weight percent of a 15 weight percent silicon dioxide masterbatch in a low density polyethylene (LDPE).
  • Resin Composition C was 10 weight percent of a high density polyethylene (HDPE) having a density of 0 955 gram per cubic centimeter (g/cr ⁇ r) and a Ml of 4 0 g/10 mm (190°C/2 16 g)
  • HDPE high density polyethylene
  • the balance to 100 percent for Charge i was a LDPE having a density of 0 921 g/cm 3 and a Ml of 3 5 g/10 m ⁇ n (190°C 2 16 kg)
  • Charge II of the film structure comprised 80 weight percent of a HDPE having a density of 0 955 g/cm 3 and a Ml of 4 0 g/10 mm (190°C/2 16 kg), and 20 weight percent of a LDPE having a density of 0 923 g/cm 3 and a Ml of 1 75 g/10 mm (190°C 2 16 kg)
  • a film having a of thickness of 90 micrometers of a l/ll/l layer structure was produced by a cast coextrusion process using Charges I and II described above
  • the thicknesses (T1) of the external layers (Charge I) was 10 micrometers each
  • One surface of the film was treated by a "corona” discharge treatment to bring its surface tension above 50 mN/m.
  • the optical properties of the film is shown in Table I
  • the percent gloss measurement of the film was measured in accordance with ASTM D-2457 and the percent haze measurement was measured in accordance with ASTM D-1003.
  • the fiim produced in this Example 1 was printed on the corona treated side using UV curable inks on flat bed silk screen printing equipment.
  • the aforementioned scratch resistance test is described as follows: A film label sample is adhered onto a stiff surface. The printed surface of the film is manually rubbed with a metal spatula The difficulty or ease of scratching the ink is rated as follows: “ 1 " not scratchable, "2" scratchable with difficulty, “3” scratchable, “4" easily scratchable, "5" scratchable by touching. This test is performed on the dry film or on the wet film after immersion in the solutions described above
  • Example 2 A three-layer coextruded film having a l/ll/l layer structure was manufactured ' -nd tested following the procedure of Example 1 The Charges 1 and II were the same as in Example 1 except that Resin A was 14 weight percent SIS having a of 9 0 g/10 r ⁇ n (200° 5 kg) and containing 85 weight percent of polymerized isoprene The optical properties of the resultant fiim are shown in Table I and the results of the adhesion tests are listed in Table II.
  • Example 3 A three-layer coextruded film having a l/ll/l layer structure was manufactured ' -nd tested following the procedure of Example 1 The Charges 1 and II were the same as in Example 1 except that Resin A was 14 weight percent SIS having a of 9 0 g/10 r ⁇ n (200° 5 kg) and containing 85 weight percent of polymerized isoprene The optical properties of the resultant fiim are shown in Table I and the results of the adhesion tests are listed in Table II.
  • Example 1 A three-layer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 1.
  • the Charges I and II were the same as m Example 1 except that Resin A was 25 weight percent Admer ® L 2000 resin, a polymeric resin containing around 0.6 weight percent of grafted maleic anhydride and commercially available from Mitsui Petrochemicals.
  • the optical properties of the resultant film are shown in Table I and the results of the adhesion tests are listed in Table II. Comparative Example A
  • Example 1 A three-layer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 1.
  • the Charges I and II were the same as in Example 1 exceptthat no Resin A was used in this Example.
  • This comparative example was used as the Control.
  • the optical properties of the Control is shown in Table I and the results of the adhesion tests are listed in Table II. Comparative Example B
  • Example 2 The adhesion tests described in Example 1 were earned out on a pure polyethylene film coated with an acrylic coating (Comparative Example B). The results are listed in Table II.
  • Example A Example 1 Example 2 Example 3 Example B)
  • Table I shows that the optical properties of Examples 1 , 2 and 3 are similar to that of the Control film.
  • a three-layer coextruded film having a l/ll/l layer structure was manufactured according to the above General Procedure.
  • Charge I included components Resin A, Additive B and Resin Composition C.
  • Resin A was 12 weight percent of SIS having a Ml of 9.0 g/10 min (200°C/5 kg) and containing 85 weight percent of polymerized isoprene.
  • Additive B was 5 weight percent of a 15 weight percent silicon dioxide masterbatch in a LDPE.
  • Resin Composition C was 10 weight percent of a HDPE having a density of 0.965 g/cm 3 and a Ml of 8.0 g/10 min (190°C/2.16 kg).
  • the balance to 100 percent for Charge I was a LDPE having density of 0.923 g/cm 3 and a Ml of 1.75 g/10 min (190°C/2.16 kg).
  • Charge II of the film structure comprised 70 weight percent of a HDPE having a density 0.965 g/cm 3 and a Ml of 8.0 g/10 min (190°C/2.16 kg); and 20 weight percent of a LDPE having a density of 0.922 g/cm 3 and a Ml of 1.2 g/10 min (190°Q2.16 kg).
  • a film having a thickness of 90 micrometers of a l/ll/l layer structure was produced by a cast coextrusi on process usi ng Charges I and It descri bed above.
  • the thicknesses (T ) of the external layers (Charge I) was 10 micrometers each.
  • Example 6 A three-layer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 4.
  • the Charges I and II were the same as in Example 4 except that there was no Additive B in Charge I.
  • the optical properties of the resultant film are shown in Table III.
  • Example 7 A three-layer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 4.
  • the Charges I and II were the same as in Example 4 except that Resin A was 12 weight percent of a styrene-isoprene-styrene/styrene-isoprene copolymers blend (SIS/SI) having a Ml of 10.0 g/10 min (200°C/5 kg) and containing 85 weight percent of polymerized isoprene.
  • the SIS/SI ratio of the blend was 82/18 percent.
  • the optical properties of the resultant film are shown in Table ill.
  • Example 7 A three-layer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 4.
  • the Charges I and II were the same as in Example 4 except that Resin A was 12 weight percent of a styrene-isoprene-styrene/st
  • Example 4 A three-layer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 4.
  • the Charges I ana II were the same as in Exari. ⁇ ie 4 except that Resin A was 12 weight percent of. SIS having a Ml of 12.0 g/10 min (200°C5 kg) and containing 82 weight percent of polymerized isoprene.
  • the optical properties of the resultant film are shown in Table III.
  • Example 8 A three-layer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 4.
  • Example 4 A three-layer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 4.
  • the Charges I and II were the same as in Example 4 except that Resin A was 12 weight percent of SIS having a Ml of 40.0 g/10 min (200O5 kg) and containing 55 weight percent of polymerized isoprene.
  • the optical properties of the resultant film are shown in Table III.
  • Example 4 A three-layer coextru ⁇ ed film naving a l/ll/l layer structure was manufactured and tested following the procedure of Example 4 The Charges I and II were the same as in Example
  • a three-layer coextruded film having a l/ll/l layer structure was manufactured according to the above General Procedure.
  • Charge I included components Resin A, Additive B and Resin Composition C.
  • Resin A was 8 weignt percent of a sytrene-butadiene-styrene copolymer (SBS) having a Ml of 6.0 g/10 mm (200°C/5 kg) and containing 60 weight percent of polymerized butadiene.
  • SBS sytrene-butadiene-styrene copolymer
  • Additive B was 5 weight percent of a 15 weight percent silicon dioxide masterbatch in a LDPE.
  • Resin Composition C was 10 weight percent of a HDPE having a density of 0.955 g/cm 3 and a Ml of 4.0 g/10 min (190°C/2.16 kg).
  • the balance to 100 percent for Charge I was a LDPE having density of 0.921 g/cm 3 and a Ml of 3.5 g/10 min (190°C/2.16 kg).
  • Charge II of the fiim structure comprised 80 weight percent of a HDPE having a density 0.955 g/cm 3 and a Ml of 4.0 g/10 min ( 190°C/2.16 kg); and 20 weight percent of a LDPE having a density of 0.923 g/cm 3 and a Ml of 1.75 g/10 mm (190°C/2.16 kg).
  • a film having a thickness of 90 micrometers of a l/ll/l layer structure was produced by a cast coextrusion process using Charges 1 and II descrioed above.
  • the thicknesses (T1 ) of the external layers (Charge I) was 10 micrometers each.
  • One surface of the film was treated by a "corona” discharge treatment to bring its surface tension above 50 mN/m.
  • Example E A three-layer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 10. The Charges I and II were the same as in Example 10 except that Resin A was 25 weight percent of a ethylene-acrylic acid copolymer (EAA) having a Ml of 10.0 g/10 min (190°C/2.16 kg) and containing 9 weight percent of polymerized acrylic acid. The optical properties of the resultant film are shown in Table IV. Comparative Example F
  • Example 10 A three-layer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 10.
  • the Charges I and II were the same as in Example 10 except that Resin A was 25 weight percent of a ethylene-methyl acryiate copolymer (EMA) having a Ml of 3.0 g/10 min (190°C/2.16 kg) and containing 15 weight percent of polymerized methyl acryiate.
  • EMA ethylene-methyl acryiate copolymer
  • Example 10 A three-layer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 10.
  • the Charges I and II were the same as in Example 10 except that Resin A was 25 weight percent of a ethylene-butyl acryiate copolymer (EBA) having a Ml of 4.0 g/10 min (190°G2.16 kg) and containing 17 weight percent of polymerized methyl acryiate.
  • EBA ethylene-butyl acryiate copolymer
  • Ml ethylene-butyl acryiate copolymer
  • the optical properties of the resultant film are shown in Table IV.
  • Example 10 A three-iayer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 10.
  • the Charges I and II were the same as in Example 10 except that Resin A was 25 weight percent of a sodium salt of an ethylene- methacryhc acid copoiymer having a Ml of 2.8 g/10 mm (190°C 2.16 kg) and having a density of 0.94 g/cm ⁇ .
  • the optical properties of the resultant film are shown in Table IV. Comparative Example I
  • Example 10 A three-layer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 10.
  • the Charges I and II were the same as in o Example 10 except that Resin A was 15 weight percent of a butyl rubber.
  • the optical properties of the resultant film are shown in Table IV. Comparative Example J
  • Example 10 A three-layer coextruded film having a l/ll/l layer structure was manufactured and tested following the procedure of Example 10.
  • the Charges I and II were the same as in 5 Example 10 except that no Resin A was used in Charge I.
  • This comparative example was used as the Control.
  • the optical properties of the Control are shown in Table IV.
  • Table IV shows that the optical properties of Comparative Examples D-1 are worse (have lower gloss and higher haze) than the Control film J.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
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  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
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Abstract

Films imprimables (10) à l'encre, comprenant au moins une couche imprimable externe (11) essentiellement composée d'un matériau polyoléfinique contenant un additif à base de résine polymère qui accroît la caractéristique d'imprimabilité de la couche sans modifier les caractéristiques optiques du film.
EP94922038A 1993-07-02 1994-06-28 Composition de film polyolefinique imprimable, brillant et transparent. Withdrawn EP0658177A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US8800293A 1993-07-02 1993-07-02
PCT/US1994/007279 WO1995001397A1 (fr) 1993-07-02 1994-06-28 Composition de film polyolefinique imprimable, brillant et transparent
US88002 1998-06-01

Publications (2)

Publication Number Publication Date
EP0658177A1 true EP0658177A1 (fr) 1995-06-21
EP0658177A4 EP0658177A4 (fr) 1996-01-10

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EP94922038A Withdrawn EP0658177A4 (fr) 1993-07-02 1994-06-28 Composition de film polyolefinique imprimable, brillant et transparent.

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EP (1) EP0658177A4 (fr)
JP (1) JPH08501125A (fr)
KR (1) KR950703027A (fr)
AU (1) AU685142B2 (fr)
CA (1) CA2142353A1 (fr)
FI (1) FI950944A (fr)
NZ (1) NZ269062A (fr)
WO (1) WO1995001397A1 (fr)

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US6884480B2 (en) 1995-05-19 2005-04-26 Cryovac, Inc. Film containing alpha-olefin/vinyl aromatic copolymer
US7217463B2 (en) 2002-06-26 2007-05-15 Avery Dennison Corporation Machine direction oriented polymeric films and methods of making the same
US9662867B2 (en) 2006-06-14 2017-05-30 Avery Dennison Corporation Conformable and die-cuttable machine direction oriented labelstocks and labels, and process for preparing
CN101484315B (zh) 2006-06-20 2013-04-10 艾利丹尼森公司 用于热熔粘合剂标记和标签原料以及此种标签的多层聚合膜
EP2350185B1 (fr) * 2008-11-26 2013-05-08 E. I. du Pont de Nemours and Company Substrat de bandeau revêtu recyclable
JP5540315B2 (ja) * 2010-03-30 2014-07-02 株式会社フジシール プラスチックラベル
US9676532B2 (en) 2012-08-15 2017-06-13 Avery Dennison Corporation Packaging reclosure label for high alcohol content products
EP3149097A1 (fr) 2014-06-02 2017-04-05 Avery Dennison Corporation Films ayant une résistance à l'abrasion, une clarté et une conformabilité améliorées

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2033038A5 (fr) * 1969-02-26 1970-11-27 Montedison Spa
DE1694587A1 (de) * 1965-09-10 1972-03-16 Mitsubishi Petrochemical Co Polypropylenmassen
EP0207205A2 (fr) * 1985-06-27 1987-01-07 Du Pont Canada Inc. Procédé de teinture de polymères d'éthylène

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5119460B2 (fr) * 1972-01-14 1976-06-17
US4479989A (en) * 1982-12-02 1984-10-30 Cutter Laboratories, Inc. Flexible container material
JPS59105039A (ja) * 1982-12-08 1984-06-18 Mitsui Toatsu Chem Inc 延伸フイルム用ポリエチレン樹脂組成物
EP0358445A3 (fr) * 1988-09-07 1990-11-14 Tonen Sekiyukagaku K.K. Film composite de polyéthylène, et étiquette
DE3838027A1 (de) * 1988-11-09 1990-05-10 Zweckform Etikettiertechnik Haftetikett zum aufkleben auf ein behaeltnis aus pp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1694587A1 (de) * 1965-09-10 1972-03-16 Mitsubishi Petrochemical Co Polypropylenmassen
FR2033038A5 (fr) * 1969-02-26 1970-11-27 Montedison Spa
EP0207205A2 (fr) * 1985-06-27 1987-01-07 Du Pont Canada Inc. Procédé de teinture de polymères d'éthylène

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9501397A1 *

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FI950944A0 (fi) 1995-03-01
WO1995001397A1 (fr) 1995-01-12
FI950944A (fi) 1995-03-01
EP0658177A4 (fr) 1996-01-10
AU7252094A (en) 1995-01-24
AU685142B2 (en) 1998-01-15
JPH08501125A (ja) 1996-02-06
NZ269062A (en) 1997-05-26
KR950703027A (ko) 1995-08-23
CA2142353A1 (fr) 1995-01-12

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