WO1990011183A1 - Materiau de reception d'ecriture reutilisable - Google Patents

Materiau de reception d'ecriture reutilisable Download PDF

Info

Publication number
WO1990011183A1
WO1990011183A1 PCT/CA1990/000102 CA9000102W WO9011183A1 WO 1990011183 A1 WO1990011183 A1 WO 1990011183A1 CA 9000102 W CA9000102 W CA 9000102W WO 9011183 A1 WO9011183 A1 WO 9011183A1
Authority
WO
WIPO (PCT)
Prior art keywords
laminate
writing
layer
writing material
material according
Prior art date
Application number
PCT/CA1990/000102
Other languages
English (en)
Inventor
Liisa Ann Kald-Soolepp
Joffre Gaeton De Blois
Original Assignee
Write Again, 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
Application filed by Write Again, Inc. filed Critical Write Again, Inc.
Publication of WO1990011183A1 publication Critical patent/WO1990011183A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/002—Repeatedly-usable boards or tablets for writing or drawing chemical details
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/202—Conductive
    • 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
    • B32B2310/00—Treatment by energy or chemical effects
    • B32B2310/14—Corona, ionisation, electrical discharge, plasma treatment
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene

Definitions

  • reusable writing surfaces have been developed over the centuries. In their earliest form, such surfaces have been as primitive as stick scratchings on a dirt surface. In their recent form, reusable writing surfaces have been developed from a variety of technologies and include ceramic, plastic, magnetic and glass surfaces.
  • the current invention allows the user to utilize a thin- line writing implement such as the common ball point pen, for clean and clear copy in a restricted space and allows large amounts of writing, drawing or calculating to occur in a larger amount of space. Further, unlike the white board or write-on/wipe-off board, inks applied to the current invention do not readily smear, but rather perform as a "temporarily permanent" medium.
  • Temporarily permanent is here defined to mean writing which is not easily removed by brushing against, as is the case with white boards, nor easily removed by touching with a damp finger, hand or other item, as is the case with write- on/wipe-off boards; but rather, applied ink may be wiped across without smearing or other detrimental effect and will remain on the surface over time. Removal of inks from the invention can, however, be accomplished by the use of moderate rubbing, stroking, or wiping with a common, dry material such as, but not limited to, cloth, tissues, paper napkins and toweling.
  • the current invention could be used as a drafting film, and is a laminate whose surface is a plastic, the invention differs greatly from existing drafting films.
  • drafting film such as "Mylar” is marked upon by a pen.
  • the ink for which is generally confined to permanent or tusch inks. Once dry, these inks can be removed from the film by the use of friction erasers.
  • inks deposited on the laminated material can be easily removed by the use of standard, dry wiping materials; erasing is not required or recommended.
  • the laminated product permits data, information or drawings to be recorded permanently, yet permits changes to be made readily to such data, information or drawings if the need arises.
  • the laminate also allows relatively easy removal of these inks by use of standard dry cloth wiping. It becomes evident that the present invention has numerous end-use applications which are limited only by the imagination. Potential uses include, but are not limited to, memo boards, address books, planning calendars, scheduling boards, game boards, score cards, editing overlays, identification labels and other innumerable uses. Products can be utilized in home, office, industrial and recreational pursuits.
  • Another objective of this invention is to provide a writing surface that remains clean during use, without significant smearing.
  • Yet a further objective of this invention is to provide a writing surface that is easily cleaned, either in sections for correction or changes or in totality to provide a
  • This invention relates to a writing surface which can be written upon with any common ball point pen, and a variety of markers including, but not limited to, permanent markers, write-on/wipe-off markers, rolling-pen markers and dry markers, and which can be cleaned away by the use of standard, dry wiping materials such as tissue, paper napkins, toweling, cloth, or other such similar material, allowing the writing material to be reused over and over again.
  • markers including, but not limited to, permanent markers, write-on/wipe-off markers, rolling-pen markers and dry markers, and which can be cleaned away by the use of standard, dry wiping materials such as tissue, paper napkins, toweling, cloth, or other such similar material, allowing the writing material to be reused over and over again.
  • Figure 1 depicts a cross-sectional view of a material providing a writing surface, in accordance with one embodiment of the present invention
  • Figure 2 depicts a cross-sectional view of the material providing a writing surface as shown during the writing process when utilizing a ball point pen;
  • Figure 3 depicts a cross-sectional view of a material providing a writing surface, in accordance with a further embodiment of the present invention.
  • Figure 4 depicts a cross-sectional view of a material providing a writing surface in accordance with a still further embodiment of the present invention.
  • figure 1 of the drawings shows a cross-sectional view of a material, generally indicated as 8, which provides a writing surface.
  • the material comprises three primary layers: a first or upper layer of polypropylene 12, which provides the actual writing surface; an intermediate layer of adhesive 14; and a sub-strate or base 16.
  • the upper layer 12 may be written upon using ink from most ball point pens, write-on/wipe-off markers, dry white ⁇ board erasers, some rolling pens, and permanent markers, with the exception that inks containing xylene will write on the material, but cannot be easily removed.
  • the inks perform, in essence, as a "temporarily permanent" medium, that is the applied ink may be wiped across without significant smearing or other detrimental effect and will remain on the surface over time, test results indicating that the material can stand up to several hundred uses before deterioration is significant.
  • a wide range of polypropylenes, including some propylene copolymers may be used for the upper layer 12. Thicknesses of the polypropylene may range upwards from 0.2 mils, although thicknesses above 20mm have been found to work less effectively. The preferred thickness lies between .5 and 3.8 mils.
  • the polypropylenes may be composed of essentially any polypropylene known in the art, including but not limited to, films which are
  • the preferred use is bi-axially oriented polypropylene. Both low and high density polypropylenes may be used, although those with a harder surface generally perform better, that is, they release the inks better and do not indent as easily.
  • polypropylene provides some of the best characteristics for easy removal of inks, as an independent film, polypropylene will not support the uses provided by the current invention. Only by enhancement, refining and control can polypropylene perform as desired within the composite. Polypropylene films find utility when supported or laminated to another material in order to accommodate a particular end use.
  • the laminate construction of the current invention provides durability of the material and increased longevity of use as compared to the quick deterioration of unsupported polypropylene.
  • the composite provides a specific, resilient writing surface which allows the inks to "set up” or adhere to the film. This is indicated in Figure 2 which shows the spread of the inks 6, upon the depression of the writing material by a pen 4.
  • SUBSTITUTE S between the writing surface and the unrelated support surface that is a table surface, chart surface or other such support. This is also important as the surface layer of the laminate will suffer deterioration when rubbed over a patterned base or support, the higher areas receiving more abrasion as the writing surface is wiped clean.
  • polypropylene may be modified by the inclusion of friction reducing agents such as, but not limited to, fatty acid amids, olefins or silicon. Such additives migrate to the surface, continually restoring the original surface slip.
  • a thin surface layer 10 may also be added to the writing surface of the polypropylene, such as, but not limited to, a finely divided organic material or silicon to decrease friction. Use of such a friction coating could provide good performance in regard to smoothness and conductivity. The resulting film could have a more stable surface without any adverse effects on appearance or wetting.
  • Anti-static agents could also be added to help dissipate the static charges of the laminate. This is helpful in that charged surfaces can cause resistance ; to the easy removal of inks from the writing surface. Static charges have been shown to occur from environmental conditions or from an unstable mating of materials within the laminate.
  • Suitable adhesives can include, but are not limited to, hard drying urethane, or acrylic-based adhesives, soft drying, pressure sensitive acrylic or water-based adhesives, or a rubber or rubberized adhesive, including hot-melt adhesives.
  • the adhesive may also contain additives such as, but not limited to, carbon, lithium and atactic polypropylene to enhance conductivity characteristics.
  • SUBSTITUTE SHEET of adhesive to be used is dependent upon the type of base material used and the thickness of the top layer of polypropylene chosen. Testing has shown that soft, pressure-sensitive acrylic-based adhesives appear to offer the best performance, closely followed by rubberized adhesives. Hard adhesives will generally only perform well when combined with a soft base 16.
  • the underside of the polypropylene film, where it is joined to the base 16 be subjected to corona discharge and that the base material be treated with an anti-slip agent before they are affixed together. This provides greater stability to the laminate, and mitigates undesired shifting, slipping or separation of the various elements.
  • the preferred material for forming the base is a vinyl material with a thickness of no less than about .5 mils.
  • the vinyl may be poured, rolled, blown or laminated, and additives to increase the resilience may be added to produce a "soft" vinyl.
  • Other materials may also be suitable for use, including, but not limited to, other elastomers, styrene, synthetic paper such as that sold under the tradename "Texoprint”, paper board such as that sold under the tradename "Durobrite”, and metal and hard- board such as material sold under the tradename "Masonite", as well as rubber and rubberized materials.
  • Paper may be a suitable base only when used in conjunction with a very elastic or resilient adhesive as otherwise paper tends to indent too easily, making removal of the
  • Additional layers to the laminate may be used to enhance the utilization of the composite. It has been found that it may be suitable to add a conductive layer 22 such as carbon or foil to the composite to enhance the ease of erasibility for certain composites. In this case, the use of heat seal 24 would be suitable in the lamination of foil to the laminate. Further, a final layer of adhesive 18 could be added to any of the developed laminates to allow adhesion of the composite to the surface of choice. This would also require the addition of a release line 20 to facilitate use of the composite as a "self stick" or label material.
  • a conductive layer 22 such as carbon or foil
  • heat seal 24 would be suitable in the lamination of foil to the laminate.
  • a final layer of adhesive 18 could be added to any of the developed laminates to allow adhesion of the composite to the surface of choice. This would also require the addition of a release line 20 to facilitate use of the composite as a "self stick" or label material.
  • the present invention is further illustrated by the following examples which are representative of the multiple forms the composite can take.
  • Intermediate layer urethane adhesive (less than 1mm thickness)
  • Base 15 mil thick foam-backed vinyl Suitable for ball point pens and markers. Provides a very smooth writing surface.
  • Suitable for ball point pen or markers Provides an easy ink removal
  • Upper layer 1.2 mil polypropylene Intermediate layer: semi-hard, acrylic resin (1 mil)
  • Base layer soft vinyl with plasticizers, approx. 10 mil thick Suitable for pen and marker use. Easy to erase
  • Base layer 20-85 pt.
  • SUBSTITUTE SHEET Suitable for ball point pen and narrow line markers. Some indention of base with heavy handed pen use.
  • Base layer Metalized plastic Suitable for wide markers
  • Base layer soft vinyl at 1-2.5 mil thickness Suitable for pen and marker. Not as easy to erase
  • Base material Synthetic paper such as Texoprint Suitable for pen and marker. Easy to write and erase
  • Upper layer 1.6 mil polypropylene
  • Intermediate layer semi-soft pressure sensitive acrylic adhesive (1-2 mil thick)
  • Base layer 1 mm vinyl with minimal plasticizers
  • Additional Adhesive layer same as intermediate layer
  • Further substrate 20 to 85 point styrene Enhanced suitability over example 5.
  • Additional Adhesive layer same as intermediate layer Further substrate: release liner
  • Additional adhesive layer same as above Further substrate: any suitable material With excessive amounts of adhesive this became a spongy material.
  • Upper layer 1.6 mil polypropylene
  • Intermediate layer Pressure sensitive semi-soft acrylic adhesive (1-2 mil thick)
  • Base layer 1 to 5 mil vinyl
  • Adhesive layer Pressure sensitive acrylic adhesive incorporating carbon particles
  • Substrate Any suitable material Suitable for pen or marker.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention se rapporte à un matériau de réception d'écriture ayant la forme d'un stratifié en plastique, sur lequel on peut écrire au moyen de n'importe quelle plume commune ou au moyen d'une grande variété de crayons-feutres et qui peut être effacé avec un matériau d'essuyage sec commun, ce qui permet la réutilisation du matériau pour des opérations d'écriture répétées un certain nombre de fois. Le matériau de réception d'écriture se compose d'une couche supérieure de polypropylène, d'une couche intermédiaire d'adhésif et d'une couche de base.
PCT/CA1990/000102 1989-03-28 1990-03-28 Materiau de reception d'ecriture reutilisable WO1990011183A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898906987A GB8906987D0 (en) 1989-03-28 1989-03-28 Writing material
GB8906987.6 1989-03-28

Publications (1)

Publication Number Publication Date
WO1990011183A1 true WO1990011183A1 (fr) 1990-10-04

Family

ID=10654062

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1990/000102 WO1990011183A1 (fr) 1989-03-28 1990-03-28 Materiau de reception d'ecriture reutilisable

Country Status (4)

Country Link
AU (1) AU5418390A (fr)
CA (1) CA2048611A1 (fr)
GB (1) GB8906987D0 (fr)
WO (1) WO1990011183A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995016575A1 (fr) * 1993-12-14 1995-06-22 Johnstone, Sharon, Jane Feuille d'impression stratifiee
WO1998043826A1 (fr) * 1997-03-27 1998-10-08 Mervyn William Webster Carte de voeux
DE19715938A1 (de) * 1997-04-16 1998-10-22 M & W Verpackungen Gmbh Mehrschichtiges Koextrudat mit einer klebrigen Kernlage
WO2000009220A1 (fr) * 1998-08-14 2000-02-24 Oy Jp Vision Technologies Ltd. Procede et carte de score permettant d'inscrire les points marques indiques specialement pour le golf
KR100430990B1 (ko) * 2002-02-09 2004-05-12 주식회사 오광 필기층이 형성된 폴리스티렌판재
USD851702S1 (en) 2017-08-17 2019-06-18 Bucktap Llc Desk pad

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463712A3 (en) * 1990-06-27 1992-04-08 University Patents, Inc. Polynucleotide phosphorodithioates as therapeutic agents for retroviral infections

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3045691A1 (de) * 1979-12-12 1981-08-27 Azona Co., Ltd., Kobe, Hyogo Film-papierfaserschichtlaminat und verfahren zu dessen herstellung
EP0092592A1 (fr) * 1982-04-22 1983-11-02 Planhorse International Ltd. Matériau d'écriture réutilisable
GB2177413A (en) * 1985-06-26 1987-01-21 Bxl Plastics Ltd Antistatic coating compositions
EP0312289A1 (fr) * 1987-10-12 1989-04-19 COURTAULDS FILMS & PACKAGING (HOLDINGS) LTD. Films en polymère

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3045691A1 (de) * 1979-12-12 1981-08-27 Azona Co., Ltd., Kobe, Hyogo Film-papierfaserschichtlaminat und verfahren zu dessen herstellung
EP0092592A1 (fr) * 1982-04-22 1983-11-02 Planhorse International Ltd. Matériau d'écriture réutilisable
GB2177413A (en) * 1985-06-26 1987-01-21 Bxl Plastics Ltd Antistatic coating compositions
EP0312289A1 (fr) * 1987-10-12 1989-04-19 COURTAULDS FILMS & PACKAGING (HOLDINGS) LTD. Films en polymère

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995016575A1 (fr) * 1993-12-14 1995-06-22 Johnstone, Sharon, Jane Feuille d'impression stratifiee
AU677747B2 (en) * 1993-12-14 1997-05-01 Easilam International (Proprietary) Limited Laminated printing sheet
US5837341A (en) * 1993-12-14 1998-11-17 Sharon Jane Johnstone Laminated printing sheet
WO1998043826A1 (fr) * 1997-03-27 1998-10-08 Mervyn William Webster Carte de voeux
DE19715938A1 (de) * 1997-04-16 1998-10-22 M & W Verpackungen Gmbh Mehrschichtiges Koextrudat mit einer klebrigen Kernlage
DE19715938C2 (de) * 1997-04-16 2003-10-09 Nordenia Deutschland Gronau Mehrschichtiges Koextrudat mit einer klebrigen Kernlage
WO2000009220A1 (fr) * 1998-08-14 2000-02-24 Oy Jp Vision Technologies Ltd. Procede et carte de score permettant d'inscrire les points marques indiques specialement pour le golf
KR100430990B1 (ko) * 2002-02-09 2004-05-12 주식회사 오광 필기층이 형성된 폴리스티렌판재
USD851702S1 (en) 2017-08-17 2019-06-18 Bucktap Llc Desk pad

Also Published As

Publication number Publication date
AU5418390A (en) 1990-10-22
GB8906987D0 (en) 1989-05-10
CA2048611A1 (fr) 1990-09-29

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