WO2016055771A1 - Procédé et appareil de fabrication d'étiquettes sur les deux côtés d'un revêtement antiadhésif - Google Patents

Procédé et appareil de fabrication d'étiquettes sur les deux côtés d'un revêtement antiadhésif Download PDF

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Publication number
WO2016055771A1
WO2016055771A1 PCT/GB2015/052909 GB2015052909W WO2016055771A1 WO 2016055771 A1 WO2016055771 A1 WO 2016055771A1 GB 2015052909 W GB2015052909 W GB 2015052909W WO 2016055771 A1 WO2016055771 A1 WO 2016055771A1
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WO
WIPO (PCT)
Prior art keywords
release liner
adhesive
tenter
sides
facestock
Prior art date
Application number
PCT/GB2015/052909
Other languages
English (en)
Inventor
Tarquin Crouch
Tim Lowe
Original Assignee
Tarquin Crouch
Tim Lowe
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 Tarquin Crouch, Tim Lowe filed Critical Tarquin Crouch
Publication of WO2016055771A1 publication Critical patent/WO2016055771A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D1/00—Multiple-step processes for making flat articles ; Making flat articles
    • B31D1/02—Multiple-step processes for making flat articles ; Making flat articles the articles being labels or tags
    • B31D1/021—Making adhesive labels having a multilayered structure, e.g. provided on carrier webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D1/00—Multiple-step processes for making flat articles ; Making flat articles
    • B31D1/02—Multiple-step processes for making flat articles ; Making flat articles the articles being labels or tags
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
    • B32B37/0015—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality to avoid warp or curl
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/04—Punching, slitting or perforating
    • B32B2038/045—Slitting
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/12—Coating on the layer surface on paper layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/28—Multiple coating on one surface
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/308—Heat stability
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • 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
    • B32B2307/732—Dimensional properties
    • B32B2307/734—Dimensional stability
    • 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
    • B32B2307/748—Releasability
    • 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
    • B32B2405/00—Adhesive articles, e.g. adhesive tapes
    • 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
    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • 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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • 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
    • B32B7/06—Interconnection of layers permitting easy separation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F2003/0225—Carrier web
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F2003/0225—Carrier web
    • G09F2003/0226—Carrier sheet
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F2003/0225—Carrier web
    • G09F2003/0227—Carrier strip
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F2003/0225—Carrier web
    • G09F2003/0229—Carrier roll

Definitions

  • Method and Apparatus for manufacturing labelstock on both sides of a release liner Background Labels are applied to products to provide identification, product information and branding. Product owners seek efficient and effective ways to apply labels and to reduce material usage and waste.
  • Labelstock is used as the base material for printing and die-cutting for the creation of self- adhesive or pressure sensitive labels.
  • Pressure sensitive labels are an effective way to achieve the objectives of identification, product information and branding.
  • Traditional high speed labelling commonly known in the art, utilises machines to apply labels to articles advanced to the labelling station on a conveyor belt or other means of carriage.
  • the pressure sensitive labels are printed and pre-cut and adhesively attached to a roll of siliconised release liner.
  • the label separates from the release liner as the release liner moves over a return which has an acute angle commonly known in the art as a "beak". This separation occurs because the stiffness of the label is greater than the release force adhering the label to the release liner. In this way the label is presented to the article to be labelled with its adhesive surface exposed.
  • Converting labels (the process of printing, die cutting and matrix stripping the waste) from conventional labelstock consist of a label material adhesively adhered to the siliconised face of a one side siliconised release liner is well known to those skilled in the art.
  • Labels on both sides of a two side siliconised release liner offer a saving of 50% in release liner use, mean more labels per roll loaded onto a labeller, reduced release liner process waste and less storage space and logistic costs.
  • labelstock is currently achieved by adhesively coating one side of a siliconised release liner, drying it (if a water or solvent based adhesive is used) or curing it (if a UV cured adhesive is used) and then laminating the face material onto the adhesive by passing it and the adhesive coated release liner through a nip.
  • An alternative is to adhesively coat the facestock and laminate it to the release liner. Which method is used is often determined by the heat stability of the material webs. If labelstock on both sides of a two side siliconised release liner is to be made in the traditional method, the process as described above has to be completed twice, with the roll rewound in-between passes or reverse unwound so what was the top is now the bottom for the second pass through the adhesive coating machine. This causes the release liner and the first adhesive coating to experience two heat histories that can cause shrinkage and stability problems and differences in the adhesive performance between the first and second coatings.
  • the invention provides a method of manufacturing double- sided labelstock in which label facestock is applied to each side of a release liner, the method comprising the steps of adhesively coating the release liner, supporting the release liner in a tenter, drying or curing the adhesive coating while the release liner is supported by the tenter, and applying label facestock to both sides of the release liner.
  • only one side of the release liner may be adhesively coated prior to supporting the release liner in the tenter.
  • the method further comprises the steps of inverting the release liner while supported by the tenter and subsequently adhesively coating the other side of the release liner before applying label facestock to both sides of the release liner.
  • any appropriate method may be employed to dry or cure the adhesive coating while the release liner is supported by the tenter, including the application of heat or the application of ultraviolet light to the release liner.
  • the label facestock may be applied while the release liner is supported by the tenter or it may be applied after the release liner has been released by the tenter.
  • the invention provides apparatus for manufacturing double-sided labelstock comprising label facestock applied to each side of a release liner, the apparatus comprising means for adhesively coating the release liner, a tenter for supporting the release liner, means for drying or curing the adhesive coating while the release liner is supported by the tenter, and means for applying label facestock to both sides of the release liner.
  • the tenter includes means for inverting the release liner.
  • the apparatus preferably further comprises a first adhesive application station, a first curing station downstream of the first adhesive application station and upstream of the means for inverting the release liner, a second adhesive application station downstream of the means for inverting the release liner, and a second curing station downstream of the second adhesive application station.
  • the means for drying or curing the adhesive coating may comprise a heater or an ultraviolet light source.
  • the tenter includes a plurality of clips for gripping the release liner.
  • the clips each grip a distance of about 2-10mm at the edge of the liner.
  • the clips are preferably spaced between 2 and 10 times the width of each clip.
  • the clips open sufficiently widely when releasing the liner such that they are able to circulate in a vertical plane.
  • the present invention controls the adhesive coated release liner so that the adhesive coated surfaces do not touch anything during the drying or curing process until laminated to the facestock by virtue of which the adhesive is protected.
  • the web can run whilst supported by rollers underneath. If both sides are adhesive coated at the same time or sequentially, and before drying/curing and lamination, then the web needs a method to control it and keep it out of contact with anything.
  • a method to achieve this is to use tenter clips which are usually attached to and driven by a chain running in a guide rail although other methods can be used such as the LISIM (linear simultaneous) process that uses individually controlled motors.
  • the clips grip the edge of the web and guide it through the critical process or processes.
  • Tenter clips are regularly used in the manufacture of oriented polymeric films to help achieve a transverse direction stretch in the second stage of the process. They are opened to release the web when it no longer needs to be controlled and during the return cycle to the point at which they re-engage the web. At this point they need to be speed synchronised to the moving web, spaced according to need and closed to grip the edge of the moving web.
  • the tenter clips engage with the edge of the release liner prior to or immediately after adhesive coating on both sides, through the drying/curing process and only release it just before or after lamination to the facestock and prior to rewinding and/or slitting.
  • the tenter clips grip a width of about 2-10mm at the edge of the liner, which is narrower than the width gripped in film- stretching applications since less force is required in the present invention.
  • the tenter clips engage with the edges of the release liner prior to or immediately after adhesive coating the first side and remain engaged with it through adhesive coating of the second side (or briefly release it for adhesive coating of the second side) and drying/curing of the adhesive on both sides and only permanently disengage just prior to or subsequent to lamination to the facestock and prior to rewinding or slitting.
  • the second side is to be surface coated on the top surface following coating of the first side on the top surface, then the web needs to be turned between coating stations. This can be achieved by the tenter clips rotating the top surface to the reverse surface in a corkscrew motion, along with the chains in their guide rails, in a clockwise or anti-clockwise direction, with guide rails for the tenter clips similarly curved.
  • the drying/curing of the adhesive on both sides can take place at the same time through one oven with heating by hot air, infra-red or UV or any other method with only one heat history and with the tenter clips ensuring that the web does not shrink, distort or change shape in any way. Because of this, the use of tenter clips offers the possibility of creating a better, more stable, flatter and consistently performing product than is obtained through the standard manufacturing method. It might also, through its better flatness, enable the use of thinner release liners than can currently be used.
  • the tenter clips are not used to stretch film and the heating cycles are less severe, therefore the clips themselves can be made smaller and less robust and the grip on the liner narrower, allowing less edge trim waste to be created.
  • the closure mechanism also need not be so robust, a simple spring closure should suffice. This will allow a much simpler and cheaper tenter clip.
  • the opening of the clip when the web needs to be released could be achieved by passing through a passage with a restricted height with the top pressing down on the clip and opening it until the tenter clips clear the edge of the web and they can close again. Gripping the web is achieved in the opposite manner.
  • the clips themselves can be spaced much more widely than is the case when they are used on an oriented film due to the lack of mechanical forces imposed on them.
  • the gaps between them may be 2-10 times the length of the clips. If the jaws of the clips open by approximately 90 degrees then the tenter chain or rail, rather than clearing the web horizontally, as it always done during orientating polymeric films, can clear the web vertically, dropping down below the web to return to the point at which the clips re-engage the web. This will allow existing machinery to be adapted to run a tenter system with less adaptation.
  • FIG 1 is a diagram illustrating the currently favoured , transfer adhesive coating lamination method to create standard, single side labelstock
  • Fig 2 is a diagram illustrating a single pass coating, curing and lamination using tenter clips to create a two side labelstock
  • FIG 3 is a diagram illustrating a two pass coating curing and lamination using tenter clips to create a two side labelstock.
  • Labelstock as a term used herein, is defined as a roll of material consisting of a multi-layer laminate suitable for self-adhesive labelling applications.
  • the two-sided labelstock of the current invention consists of a release liner with a first side and a second side, a first pressure sensitive adhesive layer positioned adjacent to the first side of the release liner and a first facestock layer positioned adjacent to the first adhesive layer and a second pressure sensitive adhesive layer positioned adjacent to the second side of the release liner with a second facestock layer positioned adjacent to the second adhesive layer.
  • Facestock as a term used herein, is defined as the printable layer located on each of the outward facing sides of the two-sided labelstock, defined above.
  • each facestock layer may itself comprise a single or multiple layers.
  • the facestock is die-cut to a specified size and shape to form the labels.
  • Corresponding labels as a term used herein, are defined as the two opposing labels, one on the first side of the release liner and one on the opposite side of the release liner.
  • Polymer as a term used herein, can refer to homopolymers, copolymers, terpolymers, etc. This application details a process for manufacturing two-sided labelstock comprising a release liner with pressure sensitive adhesive facestock releasably adhered to both sides.
  • Labelstock
  • Labelstock comprises a web of siliconised release liner material upon which pressure sensitive adhesive coated facestock is adhered. Converted labelstock with pressure sensitive adhesive labels adhered to one side of the continuous siliconised web is commonly used in high speed labelling machine applications.
  • Two-sided labelstock comprises at least five distinct layers, including the release liner, a first pressure sensitive adhesive layer positioned adjacent to the first side of the release liner and a first facestock layer positioned adjacent to the first adhesive layer, a second pressure sensitive adhesive layer positioned adjacent to the second side of the release liner and a second facestock layer positioned adjacent to the second adhesive layer.
  • the release liner provides the medium for conveyance of the labels to the labelling machine.
  • the release liner comprises a core layer with a coated low energy layer on one side for standard labelstock and on both sides for two-sided labelstock.
  • the core may be any conventional flexible material known in the art and may be comprised of either single or multiple layers.
  • the core may be a single-layer or multi-layer substrate selected from the following: glassine, paper, poly-coated paper, oriented or cast polymers of polypropylene, polyethylene, polyethylene terephthalate, polyamide, polystyrene and the like.
  • the coating layers of the release liner are characterised by low tack and permit the easy release of pressure sensitive adhesive labels thereto applied.
  • the release properties of the coating layers ensure that the adhesive remains with the facestock when it or the labels cut from the facestock are removed from it.
  • the coating layers may include a release agent selected from the group consisting of silicone, polyethylene, polypropylene, fluorocarbons and blends thereof.
  • the pressure sensitive adhesive bonds relatively weakly to the release liner and relatively strongly to the facestock. This allows removal of the pressure sensitive adhesive labels by a high speed labelling machine for application to the articles.
  • the pressure sensitive adhesive may be selected from: hot melt adhesives, water-based adhesives, solvent-based adhesives and rubber-based adhesives in preferred embodiments of this invention.
  • the facestock layers may be single-layer or multi-layer products selected from: paper, metal foils, oriented or cast polymers of polypropylene, polyethylene, polyethylene terephthalate, polystyrene and the like.
  • the two sided labelstock structure can be printed on both sides simultaneously in register using a suitable method for determining position and maintaining control of the image.
  • a device for printing such a structure in such a manner is the Landa W50 Nanographic Printing Press.
  • the two-sided labelstock structure will typically be die-cut on both sides after printing with precision such that only the facestock layers and pressure sensitive adhesive layers are cut into a specified size and shape, to form pressure sensitive adhesive labels and without damaging the release liner. This may be achieved simultaneously with the dies on each side providing the anvil to each other.
  • the labels are cut through with the use of a laser or lasers which cut through the facestock and adhesive layers but leave the release liner layer undamaged.
  • the facestock on each side may be die-cut sequentially, one side followed by the opposite side.
  • the facestock may be stripped from both sides of the release liner simultaneously or sequentially and cut and then the label produced re-laminated to the release liner using the Avery Thinstream process.
  • the redundant facestock material surrounding the pressure sensitive adhesive labels on both sides of the two-sided labelstock commonly known in the art as matrix or skeletal waste, is stripped away leaving the pressure sensitive adhesive labels releasably adhered to both sides of the two side siliconised release liner.
  • the skeletal waste is discarded after removal.
  • the release liner with labels on both sides is then wound into a roll which can be mounted on a high speed labelling machine ready for application of said labels.
  • the invention can be used for the manufacture of labelstock for pressure sensitive adhesive labels on both sides of a two side siliconised release liner which can then be applied by a high speed labelling machine to a variety of articles including, but not limited to: bottles, jars, boxes, trays, cartons, books, magazines, food, electrical, mechanical, computer, gardening, sports and leisure equipment, building products, CDs, stationery, office products, furniture, furnishings, decorative products, plants, cleaning and washing products, health and beauty care products, clothing, automotive, aerospace and shipping parts and products, mechanical and machine parts, tools, toys, hobby products, and packaging materials.
  • Fig 1 the siliconised liner 100 which consists of a web of polymer or paper with a low energy surface on one side is placed on an offwind (alternatively the process of siliconising one side can happen in series to the adhesive coating and lamination process now described).
  • An adhesive is supplied in a bath 101.
  • a fountain or gravure roller 102 rotates and further rollers 103 or via a direct process the adhesive is transferred to one side of the siliconised release liner.
  • the web then proceeds to an oven 104 when the volatiles are driven off or where the adhesive is subject to radiation that activates photo initiators that cure the adhesive.
  • the adhesive coated siliconised release liner then proceeds to a nip 105 that brings the adhesive side into contact with the facestock unwound from a roll 106.
  • the pressure in the nip ensures that the adhesive adheres to the facestock which has a higher surface energy than the siliconised release liner.
  • the laminate is then rewound into a master laminate roll 107 for later slitting or for despatch to a distribution centre for slitting for consumer rolls or it can be immediately slit and rewound into consumer rolls.
  • the two side siliconised liner 200 which consists of a web of polymer or paper with a low energy surface on both sides is placed on an offwind (alternatively the process of siliconising both sides can happen in series to the adhesive coating and lamination process now described).
  • An adhesive is supplied in a bath 201 for the first side.
  • a fountain or gravure roller rotates 202 and further rollers 203 or via a direct process the adhesive is transferred to the first side of the siliconised release liner.
  • An adhesive is also supplied in a bath 204 for the second side.
  • a fountain or gravure roller 205 rotates and further rollers 206 or via a direct process the adhesive is transferred to the second side of the siliconised release liner.
  • the release liner is then gripped on both sides by tenter clips 207 which run in rails or via a chain and guides or any other system. The tenter clips keep the web taut in the transverse direction and proceed along with the adhesive coated release liner to an oven 208 and 209 when the volatiles are driven off or where the adhesive is subject to radiation that activates photo initiators that cure the adhesive.
  • the adhesive coated siliconised release liner then proceeds to a nip 210 that brings the adhesive sides into contact with the facestock unwound from rolls on either side 211 and 212.
  • the pressure in the nip ensures that the adhesive adheres to the facestock which has a higher surface energy than the siliconised release liner.
  • the release liner is released by the tenter clips just before or after the lamination process takes place.
  • the 3 web laminate is then rewound into a master laminate roll 213 for later slitting or for despatch to a distribution centre for slitting for consumer rolls or it can be immediately slit and rewound into consumer rolls.
  • Fig 3 the two side siliconised liner 300 which consists of a web of polymer or paper with a low energy surface on both sides is placed on an offwind (alternatively the process of siliconising both sides can happen in series to the adhesive coating and lamination process now described).
  • An adhesive is supplied in a bath 301 for the first side.
  • a fountain or gravure roller rotates 302 and further rollers 303 or via a direct process the adhesive is transferred to the first side of the siliconised release liner.
  • the release liner is then gripped on both sides by tenter clips 304 which run in rails or via a chain and guides or any other system.
  • the tenter clips keep the release liner taut in the transverse direction and proceed along with the adhesive coated web to an oven 305 where the volatiles are driven off or where the adhesive is subject to radiation that activates photo initiators that cure the adhesive.
  • the one side adhesive coated siliconised release liner is then turned over by the tenter clips so the front side is now the reverse.
  • An adhesive is supplied in a bath 306 for the second side. In this a fountain or gravure roller rotates 307 and further rollers 308 or via a direct process, the adhesive is transferred to the second side of the siliconised release liner which then enters an oven 309 where the volatiles are driven off or where the adhesive is subject to radiation that activates photo initiators that cure the adhesive.
  • the two side adhesive coated siliconised release liner then proceeds to a nip 310 that brings the adhesive sides into contact with the facestock unwound from rolls on either side 311 and 312.
  • the pressure in the nip ensures that the adhesive adheres to the facestock which has a higher surface energy than the siliconised release liner.
  • the release liner is released by the tenter clips just before or after the lamination process takes place.
  • the 3 web laminate is then rewound into a master laminate roll 313 for later slitting or for despatch to a distribution centre for slitting for consumer rolls or it can be immediately slit and rewound into consumer rolls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Adhesive Tapes (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

La présente invention concerne un procédé et un appareil pour la fabrication d'étiquettes à double face, la face des étiquettes étant appliquée de chaque côté d'un revêtement antiadhésif (200, 300). Le revêtement antiadhésif est revêtu de manière adhésive et est ensuite supporté dans une rame au moyen de pinces de rame (207, 304) tandis que l'adhésif est séché ou durci. Par la suite, la face d'étiquette (211, 212, 311, 312) est appliquée sur les deux côtés du revêtement antiadhésif. Le stratifié à trois bandes est ensuite réenroulé pour former un rouleau de stratifié maître (213, 313).
PCT/GB2015/052909 2014-10-06 2015-10-06 Procédé et appareil de fabrication d'étiquettes sur les deux côtés d'un revêtement antiadhésif WO2016055771A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1417626.7A GB2532412B (en) 2014-10-06 2014-10-06 Method and apparatus for manufacturing labelstock on both sides of a release liner
GB1417626.7 2014-10-06

Publications (1)

Publication Number Publication Date
WO2016055771A1 true WO2016055771A1 (fr) 2016-04-14

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Family Applications (1)

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PCT/GB2015/052909 WO2016055771A1 (fr) 2014-10-06 2015-10-06 Procédé et appareil de fabrication d'étiquettes sur les deux côtés d'un revêtement antiadhésif

Country Status (2)

Country Link
GB (1) GB2532412B (fr)
WO (1) WO2016055771A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2552013A (en) * 2016-07-07 2018-01-10 Utroque Ltd Labelstock
CN110091623A (zh) * 2019-06-04 2019-08-06 昆山华冠商标印刷有限公司 商标生产中的卷式双面印刷装置及其生产方法
CN112320435A (zh) * 2020-11-16 2021-02-05 宁波市东霓新材料科技有限公司 一种pp保护膜成型干燥方法
CN114516216A (zh) * 2022-01-14 2022-05-20 常熟市名科针织有限公司 一种具有阻燃吸湿的涤纶针织布的生产工艺及其制造装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5143466A (en) * 1990-11-02 1992-09-01 Strategic Financial Communications Corp. Notebook page with pressure-sensitive repositionable labels on both sides thereof
US20030106777A1 (en) * 2001-12-07 2003-06-12 Davis Arthur Keith Apparatus for cleaning clips on web transport device
US7527843B2 (en) * 2004-04-28 2009-05-05 L'oreal Support provided with two series of labels

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2323821T3 (pl) * 2008-07-14 2017-09-29 Avery Dennison Corporation Urządzenie i sposób wycinania etykiet przylepnych

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5143466A (en) * 1990-11-02 1992-09-01 Strategic Financial Communications Corp. Notebook page with pressure-sensitive repositionable labels on both sides thereof
US20030106777A1 (en) * 2001-12-07 2003-06-12 Davis Arthur Keith Apparatus for cleaning clips on web transport device
US7527843B2 (en) * 2004-04-28 2009-05-05 L'oreal Support provided with two series of labels

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2552013A (en) * 2016-07-07 2018-01-10 Utroque Ltd Labelstock
GB2552013B (en) * 2016-07-07 2018-10-03 Utroque Ltd Labelstock
CN110091623A (zh) * 2019-06-04 2019-08-06 昆山华冠商标印刷有限公司 商标生产中的卷式双面印刷装置及其生产方法
CN110091623B (zh) * 2019-06-04 2023-12-15 昆山华冠商标印刷有限公司 商标生产中的卷式双面印刷装置及其生产方法
CN112320435A (zh) * 2020-11-16 2021-02-05 宁波市东霓新材料科技有限公司 一种pp保护膜成型干燥方法
CN114516216A (zh) * 2022-01-14 2022-05-20 常熟市名科针织有限公司 一种具有阻燃吸湿的涤纶针织布的生产工艺及其制造装置

Also Published As

Publication number Publication date
GB2532412A (en) 2016-05-25
GB201417626D0 (en) 2014-11-19
GB2532412B (en) 2017-02-15

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