EP0973651B1 - Application films - Google Patents

Application films Download PDF

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Publication number
EP0973651B1
EP0973651B1 EP98913390A EP98913390A EP0973651B1 EP 0973651 B1 EP0973651 B1 EP 0973651B1 EP 98913390 A EP98913390 A EP 98913390A EP 98913390 A EP98913390 A EP 98913390A EP 0973651 B1 EP0973651 B1 EP 0973651B1
Authority
EP
European Patent Office
Prior art keywords
film
application
marking
backing
modulus
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
EP98913390A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0973651A1 (en
Inventor
Akihiko Nakayama
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing 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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of EP0973651A1 publication Critical patent/EP0973651A1/en
Application granted granted Critical
Publication of EP0973651B1 publication Critical patent/EP0973651B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/17—Dry transfer

Definitions

  • the present invention relates to an application film, and more particularly to an application film which can be advantageously utilized as an intermediate transfer member in the application of a marking member in a film or tape form to an adherend.
  • Utilization of the application film according to the present invention by virtue of its good balance between softness, rubber elasticity, and stiffness, enables the marking member to be satisfactorily applied to an adherend, particularly an adherend having irregularities or a severe three dimensional area, with good workability and without creating damage to the marking member. Therefore, the application film of the present invention can be advantageously utilized in the application of, for example, a marking film having a predetermined shape or decoration or the like to an adherend, such as an automobile or a motorcycle, or any other adherend.
  • Japanese Unexamined Patent Publication (Kokai) No. 6-51702 discloses an application tape wherein a decorative pressure-sensitive adhesive sheet, having a predetermined shape, laminated on a release material is peeled off from the release material and transferred onto a contemplated adherend, wherein the backing for the tape has the following properties: 2% modulus load at a tensile speed of 0.2 m/min 3 to 4 kg/15 mm-width; and elongation at break not less than 50%.
  • the pressure-sensitive adhesive sheet can be satisfactorily transferred onto the application tape and, when applied to an adherend having a three dimensional area and irregularities, enables working to be easily performed with high efficiency. Further, in this case, advantageously, neither wrinkle nor introduction of air bubbles occurs.
  • Japanese Unexamined Patent Publication (Kokai) No. 7-138540 discloses an application film, for use in the application of a marking sheet, comprising a backing of a thermoplastic resin; and a pressure-sensitive adhesive layer provided on one side of the backing, the backing having higher softness and rubber elasticity than the marking sheet.
  • the backing for the application film is made of a soft vinyl chloride resin, and the film preferably has the following properties: 10% modulus load 1.5 to 2.5 kg/15 mm-width and maximum elongation 150 to 300%.
  • the film thickness is 50 to 100 ⁇ m, and the thickness of the pressure-sensitive adhesive layer is 10 to 20 ⁇ m.
  • the applicant of the present invention has also put an application tape on the market, and this tape is commercially available as "#331 Tape.”
  • this application tape a soft vinyl chloride resin is used as the backing, and properties of the backing are, for example, such that the tape thickness is about 68 gm, the thickness of the pressure-sensitive adhesive layer is about 7 ⁇ m, the 10% modulus load is 1.5 kg/15 mm-width, and the maximum elongation is 275%.
  • the applicant of the present invention has put "ScotchcalTM 3650 film” on the market, as a marking film which can be used in combination with this application tape.
  • a soft vinyl chloride resin is used as the backing, and properties of the backing are, for example, such that the film thickness is about 80 gm and the maximum elongation is 54%.
  • A-marking product comprising a combination of #331 application tape with ScotchcalTM 3650 film has been highly appreciated by many customers for years and used for application to various three dimensional sites in the field of exterior members of automobiles, motorcycles and so on.
  • ScotchcalTM MB305W film and ScotchcalTM CS206C53 film which are marking films having better applicability to three dimensional surface than ScotchcalTM 3650 film, are also commercially available.
  • urethane resin is used as a backing film, and properties of the film are such that the film thickness is about 53 ⁇ m and the maximum elongation is 256%.
  • a backing film has a two layer structure of a soft vinyl chloride resin and urethane resin, and properties of the film are such that the film thickness is about 148 ⁇ m and the maximum elongation is 85%.
  • An object of the present invention is to solve the above problems of the prior art and to provide an application film which can be advantageously used as an intermediate transfer member in the application of a marking member to an ad-herend particularly in its severe three dimensional area and, at the same time, has a good balance between softness, rubber elasticity, and stiffness.
  • an application film for use as an intermediate transfer medium in the application of a marking member to an adherend comprising a backing; and an adhesive layer provided on one side of the backing, the adhesive layer being applicable to the marking member, wherein the backing, when tested at a tensile speed of 200 mm/min according to the procedure set forth in JIS K 7127, has
  • the present inventors have made various studies on the evaluation of workability associated with the application of a marking film with a view to finding a clue to the solution to problems of the conventional marking products and, as a result, have found that the property required of an application film for the application of a marking member to a severe three dimensional area is a good balance between softness, rubber elasticity, and stiffness.
  • the "softness" is necessary because satisfactory flexibility and elongation are indispensable also for the application film per se in order to render the marking product conformable to a three dimensional area.
  • the reason why the "rubber elasticity" is required is that, even though the softness is satisfactory, in the case of an application film, which is likely to undergo plastic deformation, slacking, which, at the time of application to a three dimensional area, is often created mainly near the end, remains as a wrinkle.
  • the application film used has rubber elasticity, that is, has a wide elasticity region, the shrinking force of the application film can disperse the slack near the end, making it possible to perform application without causing any appearance problem.
  • the stiffness of the application film is also important.
  • the application film used is not satisfactorily stiff, the application film becomes excessively flexible upon separation of the release sheet from the film at the time of application of a marking member to an adherend, resulting in deteriorated retainability. This renders work, such as registration for application of a marking member, troublesome, resulting in remarkably deteriorated workability.
  • a material having properties capable of ensuring particularly excellent softness and rubber elasticity is selected as a backing for an application film, and the thickness of the backing is allowed to synergistically act on these properties to impart stiffness to the film.
  • Fig. 1 is an enlarged cross-sectional view showing one preferred embodiment of the application film according to the present invention.
  • an application film 10 comprises: a backing 1; and a pressure-sensitive adhesive layer 2 provided on one side of the backing 1, the pressure-sensitive adhesive layer 2 being applicable to a marking film (not shown).
  • the application of a release sheet (not shown) onto the surface of the pressure-sensitive adhesive layer 2, which is a common practice in the art, is preferred from the viewpoint of avoiding inadvertent sticking between the application films themselves or between the application film and other materials) during storage of the application film 10 in a roll form or other form or at the time of application to a marking film.
  • the backing used in the application film according to the present invention is not particularly limited so far as it has necessary softness.
  • Suitable backings usable herein include, for example, soft vinyl chloride resin, urethane resin, polyolefin resin, and polyester resin with soft vinyl chloride resin and urethane resin being preferred.
  • the backing may be constructed of one of these resins or alternatively a laminate of two or more of the above resins in combination.
  • the thickness of the backing may greatly vary depending upon desired effect. In general, however, it is preferably 85 to 160 gm. When the thickness of the backing is less than 85 gm, the stiffness of the resultant marking product is unsatisfactory, resulting in excessive softness of the whole product upon separation of a release sheet form a marking film before use of the product.
  • the thickness of the backing is, if necessary, larger than 160 gm.
  • the properties of the backing used in the film are particularly important for the practice of the present invention.
  • the backing when tested at a tensile speed of 200 mm/min according to the procedure set forth in JIS K 7127, should have a 10% modulus load of 0.3 to 1.6 kgf/15 mm, preferably 0.3 to 0.6 kgf/15 mm, and a 10% modulus stress of 0.1 to 0.8 kgf/mm 2 , preferably 0-1 to 0.5 kgf/mm 2 , and a 100% modulus stress of 0.7 to 2.5 kgf/mm 2 , and a rate of change of modulus stress of not less than 3.0, preferably not less than 5.0.
  • the backing used herein has a maximum elongation of not less than 200%.
  • the maximum elongation is less than 200%, the application film cannot be satisfactorily elongated, making it impossible to attain the contemplated object.
  • the pressure-sensitive adhesive layer applied to one side of the backing is not particularly limited. Therefore, it may be formed in a suitable thickness using a pressure-sensitive adhesive commonly used in the art by a conventional coating method.
  • SBR styrene-butadiene rubber
  • urethane pressure-sensitive adhesive a silicone pressure-sensitive adhesive
  • vinyl acetate pressure-sensitive adhesive and the like which have hitherto been commonly used in the art
  • the thickness of the pressure-sensitive adhesive layer formed by coating the above pressure-sensitive adhesive may widely vary, it is preferably about 10 to 20 ⁇ m.
  • the strength of adhesion of the pressure-sensitive adhesive layer that is, the strength of adhesion of the application film to a marking film may be suitably selected by taking into consideration various factors, such as the material of the marking film to be applied, the adhesion of the marking film to an adherend, and working environment for application.
  • the strength of adhesion of the application film to the marking film is suitably in the range of from 10 to 800 gf/25 mm as measured according the procedure specified in JIS Z 0237. This strength of adhesion should be smaller than the strength of adhesion of the marking film to an adherend because in the final stage, the application film should be peeled off from the marking film.
  • the pressure-sensitive adhesive layer of the application film is preferably protected by a release sheet until immediately before use.
  • the release sheet used is not particularly limited and, hence, may be any one commonly used in the art.
  • Suitable release sheets include, for example, sheets of a woven or nonwoven fabric, paper, and plastics, which have been treated for rendering them releasable.
  • Suitable release agents include, for example, silicone release agents.
  • the application film may be supplied or stored in various forms. For example, it may be supplied in the form of a rolled tape having a predetermined width. Further, it may be cut into sheets having a desired size and supplied in the form of a desired number of sheets as one set. Furthermore, the application film may be supplied, as a marking product, in combination with the marking film.
  • the marking film to be transferred to an adherend through the application film according to the present invention is not particularly limited.
  • marking films noted above in connection with the description of the prior art such as ScotchcalTM 3650 film, ScotchcalTM MB30SW film. and ScotchcalTM CS206C53 film, all manufactured by Minnesota Mining and Manufacturing Company, can be advantageously used.
  • the application of the marking film to an adherend using the application film according to the present invention as an intermediate transfer member may be carried out, for example, by the following procedure.
  • an application film comprising a backing and a pressure-sensitive adhesive layer.
  • a marking film comprising a decorative film with a pressure-sensitive adhesive layer and a release sheet provided on the decorative film in its pressure-sensitive adhesive layer side is provided.
  • the application film is applied to the marking film on its surface remote from the pressure-sensitive adhesive layer to form an intermediate transfer member composed of a marking film integrated with an application film, that is, a marking product.
  • the intermediate transfer member After the formation of the intermediate transfer member, the intermediate transfer member is positioned on a predetermined area of an adherend so that the application film faces upward, followed by fixation through the pressure-sensitive adhesive layer of the decorative film.
  • the above fixation may be performed by manual operation alone or, if necessary, in combination with an application device.
  • the intermediate transfer member may be suitably elongated according to the state of a dimensional area or an adherend, neither creation of a wrinkle nor introduction of air bubbles occurs, and the intermediate transfer member may be intimately adhered to the surface of the adherend.
  • the application film is peeled off from the decorative film of the marking film fixed to the adherend.
  • a decorative film adhered to an adherend in its three dimensional area is prepared.
  • An acrylic pressure-sensitive adhesive composed mainly of butyl acrylate was uniformly coated on one side of the polyurethane film to a thickness of 20 ⁇ m.
  • #331 application tape (lot No. 33080326), commercially available from Sumitomo 3M Ltd., using vinyl chloride resin film as a backing was used as "application film 4".
  • the above backing film was prepared by adding 33 parts by weight of dioctyl phthalate as a plasticizer and 2 parts by weight of an epoxidated soybean oil as a stabilizer to 100 parts by weight of vinyl chloride resin and calendering the resultant mixture.
  • the backing film had a thickness of 68 ⁇ m.
  • a pressure-sensitive adhesive layer in the application tape was one prepared by uniformly coating an acrylic pressure-sensitive adhesive composed mainly of butyl acrylate on one side of the backing to a thickness of 7 ⁇ m.
  • This example demonstrates the use of an application film as an intermediate transfer member to transfer a marking film to an adherend.
  • the application films prepared in Examples 1 to 4 were each applied to and intimately contacted with two marking films, ScotchcalTM 3650 film and ScotchcaITM CS206C53 film, commercially available from Sumitomo 3M Ltd.
  • the resultant intermediate transfer members were cut into circles with the diameter varied from 50 to 100 mm in increments of 5 mm.
  • a release sheet of the marking film was peeled off from the films in a circle form, and the films were then applied onto the surface of a sphere having a radius of 75 mm. The difficulty of applying the film to the surface of the sphere increased with an increase in diameter of the circle.
  • the use of the application film according to the present invention enables the workability associated with the application of a marking film to be improved over that for the conventional high-functional application film and can prevent the creation of a wrinkles.
  • the use of the application film according to the present invention enables a marking film to be easily applied even to areas having irregularities or severe three dimensional areas such as in fuel tanks and fenders, without drawbacks such as creation of wrinkles and introduction of air bubbles and, at the same time, offers very good workability.
  • the application film of the present invention is "stiff". This also offers good workability and easy registration, avoiding such inconvenience that films stick to each other during working. Furthermore, damage to the marking film after the application can be avoided by using the film according to the present invention.
  • Fig. 1 is an enlarged cross-sectional view of one preferred embodiment of the application film according to the present invention.
  • Fig. 1 is an illustration of an application film 10 having a backing 1 and an adhesive layer 2.

Landscapes

  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Decoration By Transfer Pictures (AREA)
  • Laminated Bodies (AREA)
EP98913390A 1997-04-09 1998-04-02 Application films Expired - Lifetime EP0973651B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP9069997 1997-04-09
JP09069997A JP3655424B2 (ja) 1997-04-09 1997-04-09 アプリケーションフィルム
PCT/US1998/006639 WO1998045128A1 (en) 1997-04-09 1998-04-02 Application films

Publications (2)

Publication Number Publication Date
EP0973651A1 EP0973651A1 (en) 2000-01-26
EP0973651B1 true EP0973651B1 (en) 2001-11-07

Family

ID=14005784

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98913390A Expired - Lifetime EP0973651B1 (en) 1997-04-09 1998-04-02 Application films

Country Status (5)

Country Link
EP (1) EP0973651B1 (enExample)
JP (1) JP3655424B2 (enExample)
KR (1) KR20010006100A (enExample)
DE (1) DE69802392T2 (enExample)
WO (1) WO1998045128A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110064900A1 (en) * 2008-05-14 2011-03-17 Nitto Denko Corporation Adhesive sheet for protecting coating film

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6673419B1 (en) 1999-03-12 2004-01-06 3M Innovative Properties Company Marking film and composite marking film
WO2000055273A1 (en) * 1999-03-18 2000-09-21 Sekisui Chemical Co., Ltd. Pressure-sensitive adhesive tape or sheet and process for producing the same
JP2006248120A (ja) * 2005-03-11 2006-09-21 Three M Innovative Properties Co 装飾シート及び装飾シートの貼り付け方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4343856A (en) * 1981-03-09 1982-08-10 Stauffer Chemical Company Polymeric marking film
KR940701435A (ko) * 1991-06-14 1994-05-28 게리 리 그리스월드 접착 도포 가능한 가요성 필름
DE4141914A1 (de) * 1991-12-18 1993-06-24 Minnesota Mining & Mfg Halogen-freies acrylurethan-folienmaterial
US5462782A (en) * 1993-01-22 1995-10-31 Su; Ching-Fang Adhesive plate assembly for sheet object
US5411783A (en) * 1993-03-08 1995-05-02 Specialty Adhesive Film Co. Heat activated applique with upper thermoplastic elastomer layer
AU703693B2 (en) * 1994-03-14 1999-04-01 Johnson & Johnson Consumer Products, Inc. Adhesive film for adhesive bandage and adhesive bandage using said adhesive film
JPH08109355A (ja) * 1994-09-26 1996-04-30 Minnesota Mining & Mfg Co <3M> 接着テープ構造体
JP2751137B2 (ja) * 1995-02-03 1998-05-18 幸夫 高見澤 入れ墨転写シール

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110064900A1 (en) * 2008-05-14 2011-03-17 Nitto Denko Corporation Adhesive sheet for protecting coating film

Also Published As

Publication number Publication date
DE69802392D1 (de) 2001-12-13
KR20010006100A (ko) 2001-01-26
DE69802392T2 (de) 2002-08-14
EP0973651A1 (en) 2000-01-26
JPH10287849A (ja) 1998-10-27
WO1998045128A1 (en) 1998-10-15
JP3655424B2 (ja) 2005-06-02

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