AU706728B2 - Printable release compositions for adhesive articles - Google Patents

Printable release compositions for adhesive articles Download PDF

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Publication number
AU706728B2
AU706728B2 AU40992/97A AU4099297A AU706728B2 AU 706728 B2 AU706728 B2 AU 706728B2 AU 40992/97 A AU40992/97 A AU 40992/97A AU 4099297 A AU4099297 A AU 4099297A AU 706728 B2 AU706728 B2 AU 706728B2
Authority
AU
Australia
Prior art keywords
release
substrate
adhesive
article
thermal transfer
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.)
Ceased
Application number
AU40992/97A
Other versions
AU4099297A (en
Inventor
David K. Rice
Adele C. Shipston
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.)
Moore North America Inc
Original Assignee
Moore Business Forms Inc
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
Priority claimed from US08/189,632 external-priority patent/US5478880A/en
Application filed by Moore Business Forms Inc filed Critical Moore Business Forms Inc
Priority to AU40992/97A priority Critical patent/AU706728B2/en
Publication of AU4099297A publication Critical patent/AU4099297A/en
Application granted granted Critical
Publication of AU706728B2 publication Critical patent/AU706728B2/en
Assigned to MOORE NORTH AMERICA, INC. reassignment MOORE NORTH AMERICA, INC. Request to Amend Deed and Register Assignors: MOORE BUSINESS FORMS, INC.
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/42—Intermediate, backcoat, or covering layers
    • B41M5/44—Intermediate, backcoat, or covering layers characterised by the macromolecular compounds
    • 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
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D123/04—Homopolymers or copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D123/04—Homopolymers or copolymers of ethene
    • C09D123/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on 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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C09J7/401—Adhesives in the form of films or foils characterised by release liners characterised by the release coating composition
    • 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
    • C08L23/08—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
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0892—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms containing monomers with other atoms than carbon, hydrogen or oxygen atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/20—Presence of organic materials
    • C09J2400/28—Presence of paper
    • C09J2400/283—Presence of paper in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2421/00—Presence of unspecified rubber
    • C09J2421/003—Presence of unspecified rubber in the primer coating
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/005—Presence of polyolefin in the release coating
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C09J2423/045—Presence of homo or copolymers of ethene in the release coating
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2433/00—Presence of (meth)acrylic polymer
    • C09J2433/005—Presence of (meth)acrylic polymer in the release coating
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2483/00—Presence of polysiloxane
    • C09J2483/005—Presence of polysiloxane in the release coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/14—Layer or component removable to expose adhesive
    • Y10T428/1424—Halogen containing compound
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/14—Layer or component removable to expose adhesive
    • Y10T428/1462—Polymer derived from material having at least one acrylic or alkacrylic group or the nitrile or amide derivative thereof [e.g., acrylamide, acrylate ester, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/14—Layer or component removable to expose adhesive
    • Y10T428/1476—Release layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24843—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] with heat sealable or heat releasable adhesive layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24851—Intermediate layer is discontinuous or differential
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2839—Web or sheet containing structurally defined element or component and having an adhesive outermost layer with release or antistick coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2848—Three or more layers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2852—Adhesive compositions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/3188—Next to cellulosic
    • Y10T428/31884—Regenerated or modified cellulose
    • Y10T428/31891—Where addition polymer is an ester or halide

Description

J..
1 Printable release compositions far adhesive articles Backaround of the Invention Field of the Invention The present invention relates to printable release compositions for pressure sensitive adhesive articles, such as labels, and to articles containing such release compositions'.
Description of the Prior Art Many types of adhesive articles are known, such as labels, tapes, and note pads. Labels, in particular, are used for business forms, files, advertising, and the like.
Labels come in a variety of shapes and sizes, such as window e labels, machine labels, integrated labels and the like.
Integrated labels are physically integrated, during manufacture, with business forms, mailings and the like.
The type of adhesive best suited for use with a particular article depends on the article's ultimate use.
The adhesive may be repositionable, permanent or removable.
For instance, it may be desirable for some applications to permanently affix an article to an object, for example, a label applied to a file folder. Such applications require a permanent adhesive. A repositionable adhesive, on the other hand, can be applied to an object, removed, and reapplied.
Pads of notes,'for example, NoteStix or PostIt notes, are examples of articles using repositionable adhesives.
CleanTac is an example of a label having a fepositionable adhesive. Finally, removable adhesives are appropriate when the article is to be removed after use, but is generally not reusable. Removable adhesives may, however, also include adhesives which become permanent over time.
Regardless of their use, adhesive articles must be stored and readily available for use. Such articles may utilize a separate disposable liner in juxtaposed face-toface contact with the adhesive substrate with a release material coated on the side of the liner in contact with the adhesive side of the adhesive substrate. Just Drior to use, 2 the liner is peeled away from the adhesive. Such an adhesive article is often referred to as a "linered" label.
Alternatively, the adhesive article may be a substrate coated on one side with a release material and coated on the opposite side with an adhesive material. Such a linerless label can be stored in pads or rolls.
The release coating facilitates either the removal of the adhesive-coated substrate from the liner or the pad or the unwinding the linerless label from the roll. The release coating needs to have sufficient adhesion to keep, for example, the linered label on its backing, or the linerless label on a pad or in a roll, but must have sufficient release properties to allow the label to be removed from the backing or pad or to be unwound from the roll, while maintaining its adhesive property.
For some time there have been problems in producing a release coating that possesses the above properties and that, additionally, contains printed matter. One problem relates to retaining the tenacity of the printed matter on the substrate so that the printed matter is not pulled off by the adhesive or wiped off by contact occasioned by someone rubbing against or applying the label. Another i problem is "fill-in" of letters such as etc.
Fill-in occurs when the porosity of the substrate is not sufficient to 'absorb the ink and the ink has a tendency to feather out. Wipe-off and related problems may occur if the porosity of the substrate is too low and the ink does not dry sufficiently.
As an example of the above-mentioned problems, a release coating may be used for the printing of Postnet barcodes and FIM codes for automated mail processing.
Postnet (Numerical Encoding Technique) is used to encode the ZIP code or ZIP+4 code on an envelone and is located in the lower right portion of a mail piece. FIMs (Facing Identification Marks) are used to identify Business Reply Ma-l and are a series of vertical bars printed in the upper middle portion of the mail piece just to the left of the postage indicia. FIMs greatly facilitate the automated processing of the mail; thus the quality and placement of the barcodes is very critical to the success of automated processing techniques. For instance, in a linerless label application, the barcode or barcodes are printed on the release surface of a substrate. If feathering or wipe off of the printed indicia -occurs; -then-the inf-ormation contained in the respective barcodes cannot be scanned.
This may result in the loss of the cheaper bulk mailing rate. Standard postage for each piece must then be paid, increasing the cost to the customer, and the mail must be mechanically sorted, causing delay.
In the case of thermal transfer printing, not only is a high surface energy preferred, but the surface must be very smooth. Most thermal transfer substrates contain clay coatings with relatively high surface energy and bending properties to enhance ink transfer and anchorage. A release coating imparts a lower surface energy to the face of the label for better release characteristics; however, the porosity of the label is reduced, making printing much more difficult. Thus higher surface energy provides higher print quality, whereas lower surface energy provides for better release characteristics. Thus, there is a need for a printable release'coating having both a good quality print and good release characteristics.
*~o Summary of the Invention The present invention is concerned with providing printable release compositions for use with pressure sensitive adhesive articles, particularly labels. The release compositions are to provide appropriate release properties in particular formulated for permanent adhesives. Accordingly, the present invention provides a composition for use as a release layer for a permanent adhesive including a mixture of: 50 to 95 parts by weight polyethylene; and approximately 5 to about 20 parts by weight silicon emulsion.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description.
Detailed Description of Preferred Embodiments The present invention can be implemented as an ink jet, video jet, and the like, printable release composition for use with pressure sensitive adhesives, such as labels and the like. The invention can also be implemented in an article, such as a label, that comprises a substrate such as paper, optionally a thermal transfer primer coating coated onto the substrate, and a release layer coated onto the thermal transfer primer coating or onto the substrate. The label may be either linerless or linered. The printable release composition of the present invention is particularly formulated for use with labels having permanent adhesives, though repositionable or removable adhesives are also able to co-operate with the inventive release composition. The o particular composition of the release layer depends on the type of adhesive that Sis appropriate for the desired end use.
o:i 25 Broadly, the composition for use as a release for a permanent adhesive which comprises a mixture of:
S.,
about 50 to about 95 parts by weight polyethylene; and about 5 to about 20 parts by weight silicon emulsion.
Preferably, the polyethylene has a melting point of 1000C or higher. The 30 polyethylene is preferably provided as an emulsion and may be obtained from commercial sources such as MICHEM 460, from Michelman, Inc., which is a polyethylene emulsion, having a density of 8.3, a pH of 10.1, a melting point of 110°C, and a hardness of 1.5. Other emulsions that can be used include Michem 32535, 74040, 46025 and 6872 5, also from Michelman, Inc.
Preferably, the release composition will contain about 80 to about 95 parts by weight polyethylene.
The silicon emulsion preferably contains an organopoly-siloxane, such as methylhydrogen polysiloxane, for example, SYLOFF 1171 available from Dow Corning Corporation, or dimethyl polysiloxane, for example, "PC-107" available from Rhone-Poulenc. Preferably, the release composition will contain about 5 parts by weight silicon emulsion.
The release composition may further include up to about 20 parts by weight ethylene vinyl chloride copolymer. A suitable ethylene vinyl chloride copolymer blend is, for example, VALCOAT 531 available from Air Products Chemicals, Inc.
The release composition may also contain other additives which do not adversely affect the desired properties of the release, such as pigments, thickeners, binders and amphipathic materials.
Examples of pigments that can be included in the thermal transfer primer coating composition include, for example, BURGESS No.28, available from Burgess Pigment, and SUPERMITE, available from ECC International. An EVA S 20 thickener also may be used in the thermal transfer barrier coating composition of the invention, such as AIRFLEX 1650, from Air Products. Examples of suitable 0 binders that can be included in the thermal transfer barrier coating composition include, for example, AIRFLEX 100 HS from Air Products Corp., CARGILL 6431 from Cargill, KRISTALEX 3070 from Hercules, REICHHOLD 68-010 from Reichhold Chemical, and UCAR LATEX 376 from Union Carbide. Amphipathic materials that can be included in the release composition include ALIPAL CD- 128 from GAF Corp., PLURONIC L-101 from BASF Corp., surfactant M-310 from Texaco, TEXAPHOR 963 from Henkel Corp., and TRITON GR5M from Union Carbide and amphipathic surfactant AEROSOL 22, C 26
H
43 NOioNa 4 S, from 30 American Cyanamid Co. The amphipathic materials increase the release and printing properties.
^f~c The release composition described above may be coated on a substrate such as paper to obtain an article, preferably a label. The article may be prepared by coating the release composition onto at least a portion of one side of the substrate. The release composition may be coated on the substrate, preferably 20# or 24# standard paper, such as 24# Union Camp Alkaline, at 0.37 1.8 gsm using a meyer rod, dahlgren, reverse roll, direct gravure, reverse gravure, direct and offset flexo. The release layer is printable with flexo, litho, gravure and dot matrix and laser. A layer of thermal transfer primer coating may be juxtaposed between the substrate and the release layer.
The article may contain a permanent (or repositionable) adhesive. The adhesive is applied either on the side of the substrate opposite the release layer, eg. a linerless label,or on at least a portion of one side of a different substrate, wherein the adhesive layer is in juxtaposed contact with the release layer, eg. a linered label.
Improved image quality may be obtained on plain paper (eg. Finch Fine 24# stock) if the paper has been pre-coated with a thermal transfer primer coating. A thermal transfer primer coating provides for a smoother contact surface between the paper and the printhead. It also acts as an insulating layer or barrier by keeping the heat generated during the printing operation from penetrating into the paper. Printing ribbons have a wax coating which melts to *o9release the ink. By keeping the heat on the surface, the ink is forced to print on 9 the release surface, improving the print quality and producing a superior image.
a The thermal transfer primer coating also functions to bind the release coating to the substrate, enhancing the scratch and scuff resistance of the release.
25 Instead of a thermal transfer primer coating, a barrier coating may be provided between the substrate and the release, which may be, for example, vinyl acetate/ethylene copolymers such as AIRFLEX 1650 by Air Products.
Accordingly, such label with improved image quality will include a plain S. paper substrate, a thermal transfer primer coating coated on the substrate, and a 30 release layer as described above coated on the thermal transfer primer coating.
The thermal transfer primer coating includes: ,,Ji Ad about 20 to about 50 parts by weight of a latex; and about 50 to about 80 parts by weight pigment.
The pigment may be selected from, for example, ROPAQUE 84, by Rohm and Haas Co. The pigment preferably has a small particle size to obtain a smooth coating. Preferably, the thermal transfer primer coating includes about parts by weight of pigment.
The latex may be, for example, commercial formulations such as LATEX 620 by Dow Chemical. Preferably, the thermal transfer primer coating includes about 20 parts by weight of a latex.
The substrate useable in the invention are preferably #24 or #20 paper.
Commercial paper may be used such as 20# Finch Fine, Consolidated, and other types of thermal transfer sheets commercially available. However, other suitable substrates include films, TYVEK, polyester, and the like. The coating weight of the thermal transfer primer coating is preferably 2.5 to 4.0 gsm, and more preferably 2.8 gsm to 3.8 gsm. The coating weight of the release composition is preferably 5.0 gsm to 8.0 gsm, and more preferably 5.6 gsm to gsm.
The substrate is pre-coated with the thermal transfer primer coating, if desired, then the release composition is prepared and coated on the thermal transfer primer coating, or on the substrate if no thermal transfer primer coating present, using a coater, such as a Meyer Rod coater. The coater can use a dahlgren, flexo, gravure blade or roll to roll. Preferably, a No.28 meyer rod is 9.used. A meyer rod is a coating rod or bar having different size diameters that S-can be selected for applying different amounts of coatings.
The following examples are provided for illustration and comparative purposes only, and are not intended to limit the scope of the present invention.
i: Examples 1 and 2 are directed to release compositions (not in accordance with the present invention) for use with repositionable adhesives.
EXAMPLE 1 30 A substrate was prepared by precoating with a thermal transfer primer coating.
7
C>
8 Substrate: 24# Finch Fine Paper Thermal transfer primer coating: 80 parts ROPAQUE 84 parts LATEX 620 Coat weight of 2.82 gsm A release composition was prepared and coated on the thermal transfer primer coating of the substrate using a Meyer Rod coater with No.28 meyer rod.
Release: 50 parts AEROSOL 22 Surfactant parts ACRYSOL ASE Coat weight of 5.64 gsm Two week accelerated aging (AA) delamination values were in the 1.0 oz/in range. AA was performed under heated conditions of 120 0
F.
EXAMPLE 2 Substrate: 24# Consolidated Thermal Transfer Paper.
A release composition was prepared and coated on the substrate.
Release: 30 parts AEROSOL 22 parts ACRYSOL Coat weight 6.76 gsm Two week AA delamination values were in the 1.0 2.0 oz/in range.
In examples 3-5, trials were conducted using the Meyer Rod coater to produce a permanent printable release for use with a permanent adhesive.
o 9.
v EX3AP LE 3 A substrate was prepared by precoating with a thermal transfer primer coating.
Substrate: 24= Finch Fine paper Thermal transfer primer coating: 80 parts ROPAQUE 84 parts LATEX 620 coat weight 3.76 gsm A release composition was prepared and coated on the thermal transfer primer coating.
Release: 75 parts Polyethylene, MICHEM 460 parts Ethylene Vinyl Chloride, VALCOAT 531 parts Silicone Emulsion, PCL 107 coat weight 7.5 gsm EXAMPLE 4 A substrate was prepared by precoating with a thermal transfer primer coating.
Substrate: 24# Finch Fine paper Thermal transfer primer coating: 80 parts ROPAQUE 84 parts LATEX 620 coat weight 2.82 3.76 gsm A release composition was prepared and coated on the thermal transfer primer coating.
Release: 80 parts Polyethylene, (MICHEM 460) 10 parts VALCOAT 531 parts PCL 107 coat weight 5.65 7.5 gsm EXAMPLE A substrate was prepared by precoating with a barrier coating.
Substrate: 24= Finch Fine paper Barrier: Vinyl Acetate/Ethylene Copolymer, AIRFLEX 1650 coat weight 2.8 6.5 gsm S A release composition was prepared and coated on the S] ba rrier coating- 2/
I
Release: 90 parts Polyethylene MICHEM 460 parts SYLOFF 1171 Coat weight 5.6 7.5 gsm None of the component materials alone meets all the requirements for a good printable release. However, proper blends offer acceptable print and release.
*7\1.
f
I
11 THE CLAIMS DEFINING THE INVENTION ARE A FiLLOW: 1. A composition for use as a release for a permanent adhesive comprising a mixture of: 50 to 95 parts by weight polyethylene; and 5 to 20 parts by weight silicon emulsion.
2. The composition of claim 1, further comprising up to 20 parts by weight ethylene vinyl chloride copolymer.
3. The composition of claim 1, wherein the mixture comprises 80 to 95 parts by weight polyethylene.
4. The composition of claim 1, wherein the polyethylene is a polyethylene emulsion.
The composition of claim 1, wherein the silicon emulsion contains an organopolysiloxane.
6. The composition of claim 5, wherein the organopolysiloxane is selected o: from methylhydrogen polysiloxane and dimethyl polysiloxane.
7. An article including a substrate and a, release layer, said release layer S comprising the composition of claim 1 coated onto at least a portion of one side of the substrate.
8. The article of claim 7, further comprising a layer of a thermal transfer primer coating juxtaposed between the substrate and the release layer.
9. The article of claim 8, wherein the substrate is paper.
1 A

Claims (2)

11. The article of claim 10, wherein the article is a linerless label.
12. The article of claim 9, further comprising a layer of a permanent adhesive coated on at least a portion of one side of a different substrate, wherein the adhesive layer is in juxtaposed contact with the release layer. DATED this 14th day of October, 1997. MOORE BUSINESS FORMS. INC WATERMARK PATENT TRADEMARK ATTORNEYS 290 BURWOOD ROAD HAWTHORN VICTORIA 3122 AUSTRALIA LJD:RJD:JL VAX DOC 016 AU002367.WPC 4* a a. a CC a.. C. a C I, T(Tr ABSTRACT The present invention is directed to a printable release composition used for pressure sensitive labels and the like. The invention is also directed to an article, such as a label, that comprises a substrate such as paper, optionally a thermal transfer primer coating coated onto the substrate and a release layer coated onto the transfer primer coating or onto the substrate. The printable release composition of the present invention may be used with labels having permanent, repositionable or removable adhesives. The particular composition of the release layer depends on the type of adhesive that is appropriate for the °desired end use. The compositions for use as a release layer are based on o@ polyethylene and silicon or vinylchlorid copolymer and polyethylene or a surfactant and acrylic copolymer. *9*o ooo° oo* 9**
AU40992/97A 1994-02-01 1997-10-14 Printable release compositions for adhesive articles Ceased AU706728B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU40992/97A AU706728B2 (en) 1994-02-01 1997-10-14 Printable release compositions for adhesive articles

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/189,632 US5478880A (en) 1994-02-01 1994-02-01 Printable release
US189632 1994-02-01
AU27909/95A AU689606B2 (en) 1994-02-01 1995-01-20 Printable release compositions for adhesive articles
AU40992/97A AU706728B2 (en) 1994-02-01 1997-10-14 Printable release compositions for adhesive articles

Related Parent Applications (1)

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AU4099297A AU4099297A (en) 1998-01-29
AU706728B2 true AU706728B2 (en) 1999-06-24

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AU40993/97A Ceased AU714153B2 (en) 1994-02-01 1997-10-14 Printable release compositions for adhesive articles

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61136571A (en) * 1984-12-06 1986-06-24 Nitto Electric Ind Co Ltd Peelable treatment agent
WO1992004409A1 (en) * 1990-09-07 1992-03-19 Allied-Signal Inc. Coemulsification of oxidized polyethylene homopolymers and amino functional silicone fluids
JPH04139259A (en) * 1990-09-28 1992-05-13 Toshiba Silicone Co Ltd Release composition and method for giving releasability

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61136571A (en) * 1984-12-06 1986-06-24 Nitto Electric Ind Co Ltd Peelable treatment agent
WO1992004409A1 (en) * 1990-09-07 1992-03-19 Allied-Signal Inc. Coemulsification of oxidized polyethylene homopolymers and amino functional silicone fluids
JPH04139259A (en) * 1990-09-28 1992-05-13 Toshiba Silicone Co Ltd Release composition and method for giving releasability

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AU4099297A (en) 1998-01-29
AU714153B2 (en) 1999-12-23
AU4099397A (en) 1998-01-08

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