EP1052110B1 - Durchsichtige Aufzeichnungskunststofffolie - Google Patents

Durchsichtige Aufzeichnungskunststofffolie Download PDF

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Publication number
EP1052110B1
EP1052110B1 EP19990303789 EP99303789A EP1052110B1 EP 1052110 B1 EP1052110 B1 EP 1052110B1 EP 19990303789 EP19990303789 EP 19990303789 EP 99303789 A EP99303789 A EP 99303789A EP 1052110 B1 EP1052110 B1 EP 1052110B1
Authority
EP
European Patent Office
Prior art keywords
writing sheet
pigment
binder
writing
plastic film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19990303789
Other languages
English (en)
French (fr)
Other versions
EP1052110A1 (de
Inventor
Bin-Tzer Lin
Tsung-Tien Kuo
Hsieh-Chang Hsieh
Jen-Rong Liu
Ho-Tsai Lin
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.)
Taiwan Hopax Chemicals Manufacturing Co Ltd
Original Assignee
Taiwan Hopax Chemicals Manufacturing Co Ltd
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 Taiwan Hopax Chemicals Manufacturing Co Ltd filed Critical Taiwan Hopax Chemicals Manufacturing Co Ltd
Priority to EP19990303789 priority Critical patent/EP1052110B1/de
Priority to DE69917219T priority patent/DE69917219T2/de
Publication of EP1052110A1 publication Critical patent/EP1052110A1/de
Application granted granted Critical
Publication of EP1052110B1 publication Critical patent/EP1052110B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/504—Backcoats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/508—Supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers

Definitions

  • This invention relates to a writing sheet, more particularly to a transparent writing sheet coated with a layer of transparent coating that possesses excellent writing quality.
  • Self-stick writing sheets have become popular in recent years since they can be attached on a surface of a table, a wall, a book or a document as desired.
  • conventional self-stick writing sheets are normally made of paper, thereby suffering from the following drawbacks that (1) they are prone to break upon use due to the lack of tensile strength for paper, and (2) they are not waterproof.
  • polypropylene can be used to fabricate synthetic paper with writing quality, printability, waterproof, and good tensile strength.
  • writing quality of the synthetic paper is still poor in comparison with common papers, such as poor ink absorbability, there remains a need for improving the writing quality for the synthetic paper.
  • synthetic paper is not transparent.
  • EP-A-0 696 516 and US 5,888,635 disclose an ink jet recording medium which comprises: (i) a base substrate which can be a transparent, translucent or opaque plastic or a paper, (ii) an underlayer on one surface of the base substrate, wherein the underlayer comprises one or more polymeric materials, in which at least one polymeric material is a water-imbibing component, and (iii) a surface layer disposed of on a surface of the underlayer, wherein the surface layer comprises one or more inorganic particulates.
  • a writing sheet comprises a transparent plastic film directly coated with a layer of transparent coating, the coating layer being prepared from a mixture of a binder and at least one pigment, the binder being selected from the group consisting of polyvinyl alcohol, polyacrylate, polyvinyl acetate, and styrene butadiene rubber, the pigment being selected from the group consisting of titanium dioxide, calcium carbonate, clay, and mixtures thereof.
  • the weight ratio of the binder to the pigment ranges from 1:1 to 1:10.
  • Fig. 1 illustrates a side view of a writing sheet embodying this invention.
  • the writing sheet 1 of the present invention includes a plastic film 11 coated with a layer of removable adhesive 111 on the bottom side of the writing sheet 1 and a layer of transparent coating 112 on the top side of the writing sheet 1.
  • the coating 112 provides a mat writing face.
  • a plurality of the writing sheets 1 are assembled to form a stack of self-stick notes 2 (see Fig. 2) by stacking the writing sheets 1 one above the other with the bottom side of each writing sheet 1 in contact with the top side of an adjacent sheet 1.
  • the plastic film 11 is made from a material selected from the group consisting of polypropylene, polyethylene, polyvinyl chloride, polyethylene terephthalate, and Mylar RTM .
  • the removable adhesive 111 may be any one of pressure sensitive adhesives known in the art.
  • a typical example of the removable adhesive 111 is an acrylate-type adhesive.
  • the coating 112 of the writing sheet 1 comprises a mixture of a binder and at least one pigment.
  • the binder of the coating 112 is preferably selected from the group consisting of polyvinyl alcohol, polyacrylate, polyvinyl acetate, and styrene butadiene rubber.
  • the pigment of the coating 112 is preferably selected from the group consisting of titanium dioxide, calcium carbonate, clay, and mixtures thereof.
  • the weight ratio of the binder to the pigment preferably ranges from 1:1 to 1:10 so as to render the coating of the writing sheet 1 of this invention to possess a transparent characteristic with excellent writing quality.
  • the coating of the writing sheet 1 can further include a dye so as to color the writing sheet 1.
  • the dye may be added in an amount of more than 2% by weight based on the total weight of the pigment.
  • the writing sheet 1 of this invention can further include a release paper (not shown) for covering and protecting the coating layer 112 of the plastic film 11.
  • the writing quality of the writing sheet is classified into three rankings which are represented as excellent (e), good (g) , and fair (f) , and is determined based on the writability, anchorage ( a binding power of the pigment to the film ) , and ink absorbability.
  • Polypropylene was used as a plastic film in each of the samples.
  • the coatings on the samples were prepared from different combinations of binders and pigments with differing weight ratios of binder to pigment.
  • the binders used in these tests were polyvinyl alcohol (PVA), polyvinyl acetate (PA), and styrene butadiene rubber (SBR).
  • the pigments used in these tests were titanium dioxide(TiO 2 ), calcium carbonate (CaCO 3 ), and clay.
  • the weight ratios of the binder to the pigment arranged in these tests ranged from 1 : 10 to 1 : 1 which are expressed in terms of grams of binder per 100 g of pigment in Tables 1-3.
  • Samples #1-#19 are listed in Table 1, samples #20-#34 in Table 2, and samples #35-#48 in Table 3.
  • Sample # Writability Anchorage Ink absorbability Sample # Writability Anchorage Ink absorbability 1 e g e 25 f e f 2 e g e 26 f e f 3 e f g 27 f g e 4 g f g 28 g g g 5 g g g 29 peeling - - 6 f f e 30 f g f 7 f f e 31 f e f 8 f f e 32 f e f 9 e f f 33 g e g 10 f f e 34 e e g 11 g f e 35 g e f 12 g g g 36 e e f 13 g g g 37 e e f 14 g e g 38 g f f 15 g e f 39 g e f 16 e f g 40 g e f 17 e f f 41
  • adhesive labels encompass labels which may be permanently affixed to a substrate and labels which are readily removable or repositionable (c.f. Post-it RTM notes).

Landscapes

  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)

Claims (7)

  1. Schreibbogen, gekennzeichnet durch einen transparenten Kunststofffilm (11), direkt beschichtet mit einer Schicht aus transparenter Beschichtung (112), wobei die Beschichtung (112) aus einer Mischung aus einem Bindemittel und mindestens einem Pigment hergestellt ist, wobei das Bindemittel ausgewählt ist aus der Gruppe, bestehend aus Polyvinylalkohol, Polyacrylat, Polyvinylacetat und Styrol/Butadien-Kautschuk, wobei das Pigment ausgewählt ist aus der Gruppe, bestehend aus Titandioxid, Calciumcarbonat, Tonerde und Mischung derselben, wobei das Gewichtsverhältnis von Bindemittel zu Pigment von 1 : 1 bis 1 : 10 reicht.
  2. Schreibbogen nach Anspruch 1, dadurch gekennzeichnet, dass der Kunststofffilm (11) hergestellt ist aus einem Material, ausgewählt aus der Gruppe, bestehend aus Polypropylen, Polyethylen, Polyvinylchlorid und Polyethylenterephthalat.
  3. Schreibbogen nach Anspruch 1 oder Anspruch 2, zusätzlich gekennzeichnet durch eine Schicht aus einem entfernbaren Adhesiv (111), aufgetragen auf den Kunststofffilm (11), um den Schreibbogen (1) mit einer entfernbar haftenden Eigenschaft zu versehen.
  4. Schreibbogen nach einem der Ansprüche 1 bis 3, zusätzlich gekennzeichnet durch ein Trennpapier, dass die Beschichtung (112) des Kunststofffilms (11) bedeckt.
  5. Schreibbogen nach Anspruch 1, dadurch gekennzeichnet, dass das Bindemittel Polyvinylalkohol und das Pigment Titandioxid ist, worin das Gewichtsverhältnis von Polyvinylalkohol zu Titandioxid von 1 : 1 bis 1 : 2 beträgt.
  6. Schreibbogen nach Anspruch 1, dadurch gekennzeichnet, dass das Bindemittel Styrol/Butadien-Kautschuk und das Pigment Calciumcarbonat ist, worin das Gewichtsverhältnis von Styrol/Butadien-Kautschuk zu Calciumcarbonat von 1 : 1 bis 1 : 2 beträgt.
  7. Schreibbogen nach Anspruch 1, dadurch gekennzeichnet, dass die Beschichtung zusätzlich einen Farbstoff enthält.
EP19990303789 1999-05-14 1999-05-14 Durchsichtige Aufzeichnungskunststofffolie Expired - Lifetime EP1052110B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19990303789 EP1052110B1 (de) 1999-05-14 1999-05-14 Durchsichtige Aufzeichnungskunststofffolie
DE69917219T DE69917219T2 (de) 1999-05-14 1999-05-14 Durchsichtige Aufzeichnungskunststofffolie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19990303789 EP1052110B1 (de) 1999-05-14 1999-05-14 Durchsichtige Aufzeichnungskunststofffolie

Publications (2)

Publication Number Publication Date
EP1052110A1 EP1052110A1 (de) 2000-11-15
EP1052110B1 true EP1052110B1 (de) 2004-05-12

Family

ID=8241391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990303789 Expired - Lifetime EP1052110B1 (de) 1999-05-14 1999-05-14 Durchsichtige Aufzeichnungskunststofffolie

Country Status (2)

Country Link
EP (1) EP1052110B1 (de)
DE (1) DE69917219T2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2494982A (en) * 2011-09-20 2013-03-27 John Macleod Note pad formed of removable transparent sheets

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714347A1 (de) * 1987-04-29 1988-11-17 Minnesota Mining & Mfg Aufhaengbare schreibunterlagenvorrichtung
US5137773A (en) * 1990-03-02 1992-08-11 Xerox Corporation Transparencies
EP0696516B1 (de) * 1994-08-08 2003-12-17 Arkwright Inc. Tintenstrahlaufzeichnungsmaterial mit erweiterter Verwendungsmöglichkeit
JPH11503085A (ja) * 1995-04-04 1999-03-23 ミネソタ・マイニング・アンド・マニュファクチャリング・カンパニー 着脱可能なシートからなる本

Also Published As

Publication number Publication date
DE69917219D1 (de) 2004-06-17
EP1052110A1 (de) 2000-11-15
DE69917219T2 (de) 2005-05-04

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