EP0299598A2 - Produit de détachement net comprenant une partie à enlèvement net - Google Patents

Produit de détachement net comprenant une partie à enlèvement net Download PDF

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Publication number
EP0299598A2
EP0299598A2 EP88303944A EP88303944A EP0299598A2 EP 0299598 A2 EP0299598 A2 EP 0299598A2 EP 88303944 A EP88303944 A EP 88303944A EP 88303944 A EP88303944 A EP 88303944A EP 0299598 A2 EP0299598 A2 EP 0299598A2
Authority
EP
European Patent Office
Prior art keywords
sheet
release
face
clean
backing sheet
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Withdrawn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
EP88303944A
Other languages
German (de)
English (en)
Other versions
EP0299598A3 (fr
Inventor
Gary Doll
James Mitchell
William Castle
John Harding
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.)
Standard Register Co
Original Assignee
Standard Register 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 Standard Register Co filed Critical Standard Register Co
Publication of EP0299598A2 publication Critical patent/EP0299598A2/fr
Publication of EP0299598A3 publication Critical patent/EP0299598A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • G09F3/0288—Labels or tickets consisting of more than one part, e.g. with address of sender or other reference on separate section to main label; Multi-copy labels

Definitions

  • This invention relates to a clean release laminate construction, and, more particularly, to a construction having a clean lifting portion for easy detachment of a face sheet from the construction.
  • One such class of laminated products has been the so-called clean release class of products in which a face or top sheet can be separated from the laminate construction and have a clean and nontacky surface.
  • clean release products are used as sew on labels, tags, identification labels, or the like.
  • Clean release products typically utilize releasable or fugitive adhesives which exhibit cohesive (internal) failure instead of the adhesive/adherend failure exhibited by pressure sensitive adhesives.
  • Releasable adhesives are compositions which form relatively weak bonds. but which adhere well to paper and other surfaces. Failure occurs within the releasable adhesive film itself when a layer of the laminate is subjected to peeling forces.
  • Dunsirn et al U.S. Patent No. 4,479,838, describes a coupon structure in which a coupon is secured to a base sheet by means of a fugitive adhesive.
  • the base sheet is, in turn, secured to a release liner by means of a pressure sensitive adhesive.
  • One corner of the coupon is left free of the fugitive adhesive to provide a grasping edge to peel away the coupon.
  • Dunsirn is silent with respect to the method by which the fugitive adhesive is limited to the desired area on the coupon and is not present at the free edge.
  • U.S. Patent No. 4,526,405 discloses a multilayer label structure in which the top label sheet has a fugitive adhesive which secures less than the entire surface area of the label to a base layer therebeneath. The edge of each label is free of adhesive, facilitating removal. The pattern of adhesive is produced by pattern coating of the fugitive adhesive prior to lamination.
  • the present invention meets that need by providing a clean release laminate construction with a clean lifting portion so that the top or face sheet of the construction can be easily removed.
  • Reference to a "clean lifting portion" in this specification means that some portion of the total surface area of the face sheet is left free of adhesive. This portion may be for example, one or more edges or a corner of the face sheet. Preferably, the clean lifting portion of the face sheet is about the outer periphery of the sheet.
  • the present invention also provides a method by which such a clean release product can be manufactured that does not require the use of pattern coating of an adhesive.
  • the present invention also provides a method for producing a plurality of clean release labels with clean lifting portions on a continuous web of material.
  • a laminate construction which includes a backing sheet and a face sheet which covers at least a portion of the backing sheet.
  • the backing and face sheet are joined together by a layer of a releasable adhesive which secures a first(lower) surface of the face sheet to a first (upper) surface of the backing sheet.
  • At least one portion on the first surface of the face sheet includes thereon a release composition which does not adhere to the releasable adhesive. This leaves that portion of the face sheet free from the releasable adhesive, thus permitting easy removal of the face sheet from the laminate construction.
  • this release composition is a silicone-based ink which may be printed directly onto the surface of the face sheet.
  • the laminate construction may also be in the form of a piggy-back construction in which a second (lower) surface of the backing sheet has a layer of pressure sensitive adhesive thereon which may be covered with a release liner. This piggy-back construction permits the laminate to be adhered to a substrate with the face sheet in place. The face sheet can then be removed at a later time as desired.
  • the laminate construction includes a face sheet and a backing sheet as before.
  • the release composition is present on the first (upper) surface of the backing sheet.
  • the pattern of release composition is positioned such that it lies directly beneath a portion of the face sheet such as an edge or corner. Again, that portion of the face sheet is free from the releasable adhesive so that the face sheet can be readily grasped at its free portion and delaminated from the remainder of the construction.
  • the present invention also includes a method of producing a clean release laminate construction with a clean lifting edge.
  • a releasable adhesive is applied to a first (upper) surface of a backing sheet.
  • a release composition is printed in a predetermined pattern on a first(lower) surface.
  • the pattern is printed along at least one portion of the first surface of the face sheet. The two sheets are then laminated together so that the releasable adhesive secures the face and backing sheets together except along the portion of the face sheet where the release composition was printed.
  • the release composition is preferably a silicone-based ink which can be printed by conventional flexographic techniques.
  • a piggy-back construction can be made by the further steps of coating the second (lower) surface of the backing sheet with a pressure sensitive adhesive and applying a release liner over the adhesive.
  • the clean laminate construction of the present invention may also be produced by an alternate procedure.
  • the release composition is printed in a predetermined pattern onto the first (upper) surface of the backing sheet.
  • the releasable adhesive is then applied over that surface, and the face sheet is laminated thereto.
  • the face sheet is positioned during lamination so that the area printed with release composition is beneath an edge or corner portion of the face sheet. Because of the presence of the release composition, that portion of the face sheet remains free of the backing sheet.
  • the present invention also provides a method for producing a plurality of clean release labels with clean lifting portions on a continuous web of material. This method is suitable for high speed printing and laminating equipment.
  • a releasable adhesive is applied to a first surface of a continuous web of backing material.
  • a pattern of release material is printed onto a first surface of a continuous web of face material. The pattern corresponds to the areas between individual labels and also includes areas which will become respective edge or corner portions of individual labels.
  • the two webs are then brought together to form the laminate, with the releasable adhesive securing the two webs together.
  • the laminate is passed to a die cutting station where individual labels are cut out of the web of face material. The depth of the cutting operation is controlled so that only the face web is cut, leaving the backing web intact.
  • the matrix portion between individual labels is then removed to produce a plurality of clean release labels with clean lifting edges. Because of the preprinting of areas corresponding to the removed matrix portion with a release composition, removal of the matrix is facilitated, and tearing of the matrix or labels during removal is prevented.
  • the present invention also provides an alternate method for producing a plurality of clean release labels with clean lifting portions on a continuous web of material.
  • a pattern of release composition is printed on selected areas of a first surface of a continuous web of backing material at a first printing station.
  • the printed web then continues on to a second station where a releasable adhesive is applied to the same surface of the web of backing material.
  • a continuous web of a face material is then brought into contact with the coated surface of the web of backing material, and the two webs are pressed together to form the laminate construction.
  • the two webs are brought together such that the areas printed with release composition on the backing web lie beneath areas on the face sheet which will correspond to areas between individual labels and respective portions of the labels.
  • the continuous laminate is then passed through a die cutting operation in which individual labels are cut from the face web.
  • the depth of cut is controlled so that only the face layer is cut. This forms a matrix portion on the face web which corresponds to the areas between the individual labels.
  • the matrix portion of the face layer is then easily separated from the remainder of the laminate construction because it overlies area where the release composition was printed. This prevents tearing of the matrix and the individuals labels as the matrix is pulled away from the laminate. The individual labels remain with their clean lift portions on the continuous backing web.
  • the present invention is advantageously carried out using continuous webs of face and backing material to produce a continuous series of clean release labels.
  • the invention is also applicable to the production of individual sheets of labels or to the production of individual labels themselves.
  • the backing material and face material are supplied as continuous rolls as is conventional in the art.
  • the backing and face material are usually paper or paper-like material.
  • the face or backing material may be of thin flexible plastic or a thin metallic foil or metal-coated plastic.
  • either the first lower surface of the face sheet or the first upper surface of the backing sheet is preprinted with a release composition such as a release ink in those areas where it is desired that the releasable adhesive not adhere.
  • the release composition is printed onto the lower face surface or upper backing surface in a conventional manner such as by using flexographic web printing techniques.
  • Many different types of release inks can be used to print the desired pattern.
  • a preferred release ink is a silicone-containing water-based release ink manufactured by the Dow Chemical Company and sold under the designation 3-5024. However, other non-silicone release inks may be used.
  • Fig. 1 illustrates an embodiment of the invention in which an area of the lower surface 12 of a continuous web of face material 10 has been printed in a desired pattern with a release composition 14.
  • the fragmentary plan view shows a pattern from which a plurality of labels, shown in phantom lines, is formed.
  • the pattern of printing encompasses both the areas 16 which will form the matrix portion 24 of the laminate and the areas 18 which correspond to the respective edge portions of the labels.
  • the view in Fig. 1 can be seen as a different embodiment of the invention in which the top surface 25 of the backing material 26 is preprinted in the same pattern.
  • the laminate construction may be formed as follows. At a first station, a releasable adhesive 28 is applied over a first top surface 25 of a continuous web of backing material 26.
  • the backing material 26 may be advantageously supplied from a roll.
  • the releasable adhesive 28 may be applied by conventional equipment such as by a roller, a knife blade, or by spray coating.
  • a major advantage of the present invention is that the releasable adhesive does not need to be pattern coated onto the backing material surface. Rather, application is achieved by any number of methods, and the method of application can be optimized for the particular adhesive utilized.
  • a suitable releasable adhesive may be chosen from blends of polyvinyl acetate and polyethylene emulsions. These blends are formulated by varying the ratio of these two emulsions. Such adhesives are available commercially. The peel strength of these blends may be varied by varying the ratio of polyvinyl acetate to polyethylene.
  • Suitable physical properties for such a releasable adhesive are: a viscosity of from 3500 to 4500 centipoise at 30 degrees centigrade; a specific gravity of 0.98 to 1.15 grams per cubic centimeter; an oven dry solids content of 43% to 58%; and a pH from 4.5 to 8.5.
  • the adhesive is preferably applied at a rate of from about 3.0 to about 22.0 grams per square meter, and most preferably about 3.0 to about 12.0 grams per square meter, based on dry weight.
  • the releasable adhesive has a low cohesive strength, bonds well to paper, and is nontacky to the touch when dry. It also provides a uniform nonfiber tearing clean release from paper. Preferred release levels may be in the range of from about 100 to about 500 grams per five centimeters of width, although somewhat higher and lower values are operational. The release test is conducted at 90 degree peel at 1500 centimeters per minute by delaminating the face material from the backing material.
  • a releasable adhesive suitable for use in the present invention may generally be identified as one in which cohesive failure occurs as a label is peeled from a backing sheet. Cohesive failure is defined as that which occurs within the layer of adhesive, rather than failure at the interface between the face material and adhesive, or the backing material and adhesive. However, adhesives which fail adhesively at either the adhesive-free material interface or the adhesive-backing material interface are also within the scope of the invention.
  • a pattern of release ink is printed onto a first lower surface of a continuous roll or web of face material.
  • the pattern corresponds to the areas between individual labels and also includes those areas which will become respective edge portions of individual labels. That pattern is illustrated in Fig. 1 and identified by areas 16 and 18.
  • Indicia such as indicia 20, may be printed onto the top surface of face material 10 as illustrated in Fig.2. This printing may be accomplished either prior to or after the face and backing material have been combined into the laminate construction.
  • the indicia shown relate to an ABC Co. label which may be printed to show an inventory or item number, a date, and a price. Those skilled in the art will immediately recognize that other printed indicia may be used depending upon the specific desired end use of the laminate construction.
  • the upper surface 25 of backing material 26 may be preprinted with release composition 14.
  • the construction illustrated in Fig. 1 may also be viewed as a fragmentary view looking down on that upper surface 25 of backing material 26.
  • the top surface 25 of the preprinted backing material 26 is then coated with releasable adhesive 28 and then laminated to face web 10.
  • the releasable adhesive may be applied to the lower surface of face web 10 and then laminated to the upper surface 25 of backing web 26. In both embodiments, there is no need to pattern coat the adhesive.
  • Fig. 2 illustrates, in fragmentary form, such a construction after die cutting, but prior to matrix removal.
  • face material 10 contains individual labels 22 separated by a matrix portion 24.
  • the depth of the cutting operation is controlled so that only the face web 10 is cut, leaving the web of backing material 26, as best seen in Fig. 4, intact.
  • the matrix portion 24 between the individual labels is then removed to yield the structure illustrated in Fig. 3. Because release material 14 has been previously printed onto the areas beneath matrix portion 24, removal of the matrix is facilitated, and tearing of the labels and/or laminate construction is prevented. Individual labels 22 may then readily be removed from the laminate construction by lifting each label at its clean release edge portion having release material 18 thereon.
  • Fig. 5 illustrates a piggy-back construction which also produces a clean release label having a clean lifting edge portion.
  • the piggy-back construction is made by following the initial steps of preprinting with a release material, coating with releasable adhesive, and laminating set forth above.
  • the lower surface 27 of backing web 26 is coated with a pressure sensitive adhesive 30.
  • the pressure sensitive adhesive may be applied by roll coating, spraying, or other conventional means.
  • a release liner 32 is then laminated to the layer of pressure sensitive adhesive 30 to complete the construction. As best illustrated in Fig. 5, the die cutting operation is controlled for this particular construction to cut through the backing web 26, but not release liner 32.
  • Release liner 32 may be coated with a silicone-based material or other known release agent as is conventional in the art.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP88303944A 1987-07-13 1988-04-29 Produit de détachement net comprenant une partie à enlèvement net Withdrawn EP0299598A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7292787A 1987-07-13 1987-07-13
US72927 1987-07-13

Publications (2)

Publication Number Publication Date
EP0299598A2 true EP0299598A2 (fr) 1989-01-18
EP0299598A3 EP0299598A3 (fr) 1989-06-07

Family

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EP88303944A Withdrawn EP0299598A3 (fr) 1987-07-13 1988-04-29 Produit de détachement net comprenant une partie à enlèvement net

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EP (1) EP0299598A3 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4938414A (en) * 1989-05-03 1990-07-03 Ludwig Lippert Postcard type mailing piece with removable message labels
EP0514625A2 (fr) * 1991-05-24 1992-11-25 Wallace Computer Services, Inc. Procédé de fabrication d'une étiquette comprenant une partie sans adhésif pour le décollage
US6837955B1 (en) 1998-09-22 2005-01-04 Avery Dennison Corporation Method of forming printable media
US6890397B1 (en) 1998-09-22 2005-05-10 Avery Dennison Corporation Method of forming sheets of printable media
US7055862B2 (en) 1994-06-15 2006-06-06 Dry Label Denmark Aps Label and lever arch file or ring
EP1882582A1 (fr) * 2006-07-25 2008-01-30 Paxar Americas, Inc. Transfert thermique composite, procédé de fabrication correspondant et toile d'étiquetage
US8530020B2 (en) 1998-09-22 2013-09-10 Ccl Label, Inc. Sheet of printable business cards

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2052435A (en) * 1979-06-22 1981-01-28 Lockhart J Pharmaceutical record and label system
DE3122633A1 (de) * 1981-06-06 1983-01-05 Heinrich Hermann Gmbh + Co, 7000 Stuttgart Herstellungsverfahren fuer ein etikettenband und etikettenband
US4526405A (en) * 1982-12-17 1985-07-02 Graphic Resources, Inc. Label structure
WO1986002531A1 (fr) * 1984-10-29 1986-05-09 Avery International Corporation Etiquette detachable a sec ou carte avec onglet de detachement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2052435A (en) * 1979-06-22 1981-01-28 Lockhart J Pharmaceutical record and label system
DE3122633A1 (de) * 1981-06-06 1983-01-05 Heinrich Hermann Gmbh + Co, 7000 Stuttgart Herstellungsverfahren fuer ein etikettenband und etikettenband
US4526405A (en) * 1982-12-17 1985-07-02 Graphic Resources, Inc. Label structure
WO1986002531A1 (fr) * 1984-10-29 1986-05-09 Avery International Corporation Etiquette detachable a sec ou carte avec onglet de detachement

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4938414A (en) * 1989-05-03 1990-07-03 Ludwig Lippert Postcard type mailing piece with removable message labels
EP0514625A2 (fr) * 1991-05-24 1992-11-25 Wallace Computer Services, Inc. Procédé de fabrication d'une étiquette comprenant une partie sans adhésif pour le décollage
EP0514625A3 (en) * 1991-05-24 1993-03-03 Wallace Computer Services, Inc. Method of making a label with adhesive-free lifting portion
US7055862B2 (en) 1994-06-15 2006-06-06 Dry Label Denmark Aps Label and lever arch file or ring
US7954855B2 (en) 1994-06-15 2011-06-07 Dry Label Denmark Aps Label and a lever arch file of ring binder
US6837955B1 (en) 1998-09-22 2005-01-04 Avery Dennison Corporation Method of forming printable media
US6890397B1 (en) 1998-09-22 2005-05-10 Avery Dennison Corporation Method of forming sheets of printable media
US8530020B2 (en) 1998-09-22 2013-09-10 Ccl Label, Inc. Sheet of printable business cards
EP1882582A1 (fr) * 2006-07-25 2008-01-30 Paxar Americas, Inc. Transfert thermique composite, procédé de fabrication correspondant et toile d'étiquetage

Also Published As

Publication number Publication date
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