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GB2385022A - Technique for laminating films to glass substrates - Google Patents

Technique for laminating films to glass substrates Download PDF

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Publication number
GB2385022A
GB2385022A GB0202948A GB0202948A GB2385022A GB 2385022 A GB2385022 A GB 2385022A GB 0202948 A GB0202948 A GB 0202948A GB 0202948 A GB0202948 A GB 0202948A GB 2385022 A GB2385022 A GB 2385022A
Authority
GB
United Kingdom
Prior art keywords
film
substrate
laminate
onto
adhesive
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Withdrawn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
GB0202948A
Other versions
GB0202948D0 (en
Inventor
Albert Michael Keane
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB0202948A priority Critical patent/GB2385022A/en
Publication of GB0202948D0 publication Critical patent/GB0202948D0/en
Publication of GB2385022A publication Critical patent/GB2385022A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/48—Preparation of the surfaces
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10018—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising only one glass sheet
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10247—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10816—Making laminated safety glass or glazing; Apparatus therefor by pressing
    • B32B17/10825—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts
    • B32B17/10862—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using pressing-rolls
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B37/0038—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving application of liquid to the layers prior to lamination, e.g. wet laminating
    • 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
    • B32B38/14—Printing or colouring
    • B32B38/145—Printing
    • 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
    • B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/48—Preparation of the surfaces
    • B29C2063/483—Preparation of the surfaces by applying a liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/0047—Preventing air-inclusions
    • 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
    • B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
    • B32B2315/08—Glass
    • 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
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • 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
    • B32B37/1207—Heat-activated adhesive

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A method of laminating a pre-printed film onto a substrate such as glass, the method including the steps of taking a relatively stable film, such as a polyester film, having a solvent based adhesive, such as an acrylic adhesive on one side of the film, printing a desired design onto the other side of the film, spraying water onto one side of a substrate, such as a sheet of glass, thereafter placing the pre-printed film adhesive side down onto the substrate above the layer of water such that it "floats" on the surface, following any positional adjustment of the film relative to the substrate subsequently causing the laminate to pass between a pair of heated rollers which apply pressure to the laminate to squeeze out water from between the layer of adhesive and substrate and heating to the laminate to make it pliable during the process such that substantially no air pockets are present in the laminate when the laminate exits from the rollers.

Description

<Desc/Clms Page number 1>
Lamination techniques Improvements in and relating to lamination techniques This invention relates to improvements in laminating techniques and in particular, but not exclusively, to such techniques for use with sheets of glass.
In industries such as the gaming industry where gaming machines are usually provided with a glass display panel, a feature considered to be important is the clarity of the display beneath the glass, which may be partially mirrored and may typically use up to seven different colours. Because clear and colourful presentation of the display is considered important it is usual to print such directly onto the glass which, in turn, requires repeated handling. This can be tiring and time-consuming for the person doing the printing and can lead to breakage of the glass or misalignment of one or more of the colours, leading to a spoiler allowance being necessary.
Although this problem could theoretically be solved by the use of a pre-printed plastics onto which a layer of adhesive has been applied, nevertheless in practice to achieve the required quality i. e. to match that of glass panels where the displays are printed directly onto them, it would be necessary to use an adhesive which is initially wet or tacky and then"float"the laminate onto the glass above a layer of water, to thereafter squeeze
<Desc/Clms Page number 2>
Lamination techniques the water out by hand by means of a hand roller. This would be time consuming and to achieve perfect or near perfect adhesion over the whole surface of the glass substrate, the substrate onto which a display has been printed has to be sufficiently pliable for that purpose, typically being vinyl. This presents problems if an intricate and multi-coloured display is required since in view of the often very tight registration of the various colours and designs in such a display, the film onto which it is printed must be stable and not pliable like vinyl.
These problems collectively mean that in practice the preference is still to print on glass rather than onto a substrate which is then adhered to the glass via an adhesive.
Although it is known to provide heat activated adhesives on films which may be pre-printed, such as is used in the print industry, nevertheless the quality of the finish if used on a glass substrate would not be sufficient. to match that of a display printed directed onto glass.
The present invention is derived from the surprising realisation that by using a relatively stable film, such as a polyester, and coating it with a solvent based adhesive, which may be an acrylic, after the opposite side of the film has been pre-printed with a required display,
<Desc/Clms Page number 3>
Lamination techniques then through the use of heat and pressure it is possible to achieve a finish which approaches or even matches that of a glass substrate onto which a display has been printed directly.
According to a first aspect of the invention there is provided a method of laminating a pre-printed film onto a substrate such as glass, the method including the steps of taking a relatively stable film, such as a polyester film, having a solvent based adhesive, such as an acrylic adhesive on one side of the film, printing a desired design onto the other side of the film, spraying water onto one side of a substrate, such as a sheet of glass, thereafter placing the pre-printed film adhesive side down onto the substrate above the layer of water such that it floats on the surface, following any positional adjustment of the film relative to the substrate subsequently causing the laminate to pass between a pair of heated rollers which apply pressure to the laminate to squeeze out water from between the layer of adhesive and substrate and heating to the laminate to make it pliable during the process such that substantially no air pockets are present in the laminate when the laminate exits from the rollers.
Conveniently, the rollers have an elastomeric coating, such as rubber, to prevent or inhibit breakage of
<Desc/Clms Page number 4>
Lamination techniques the substrate and conveniently they are heated to around 130 C in order to impart the desired pliability to the film in order to ensure that substantially no air gaps remain in the laminate.
According to the second aspect of the invention there is provided laminated sheet made in accordance with the first aspect of the invention.
The invention will now be described, by way of example only, with reference to the accompanying drawings in which: Figure 1 shows a pre-printed film being floated onto a glass substrate on a layer of water.
Figure 2 shows the resulting lamination being squeezed through heated rollers.
Turning firstly to Figure 1, the pre-printed film 1 is shown being"floated"above one side of a glass substrate 2 on water particles shown generally at 3 which may typically be sprayed on to the surface of the glass panel 2. On that side of the film 1 adjacent to the glass panel 2 there is a layer of a solvent based adhesive (not shown) such as an acrylic adhesive, which, when dry, is known to provide a good bond between layers to be bonded and to have excellent optical characteristics by being substantially clear. In order to allow the film 1 to be
<Desc/Clms Page number 5>
Lamination techniques moved around the top surface of the glass panel 2 until it is in a desired position the water 3 prevents the layer of adhesive from drying and lubricates the junction between the adhesive and that side of the glass panel onto which the film is placed.
As is seen schematically in Figure 2, the resulting laminate 4 is then passed through a pair of heated rollers 5,6 which may typically be stainless steel rollers, each having a covering 7,8 of rubber, such rollers being conventional and as used in the printing industry. By adjusting the nip between the rollers 5,6 to allow for, say, a 6mm thick laminate 4 to be forced through a 5mm gap, between them it is possible to ensure even pressure being applied on the laminate 4 at the point of contact. By heating the rollers 5,6 to typically, 130 C and by passing the laminate 4 through the rollers at a rate of typically e. g. 10cm per minute the film 1 is heated to make it pliable. During this process substantially all of the water 3 is removed between the film and the glass panel by pressure from the rollers 5,6 such that substantially no air gaps are left when the process is completed, even when the laminate 4 is cooled to e. g. room temperature.
The invention therefore provides an elegant and surprisingly simple solution to a known problem in the
<Desc/Clms Page number 6>
Lamination techniques gaming industry, although it will be apparent that the method of the invention may be used in other industries and with different films and substrates other than polyester and glass respectively, without departing from the spirit or scope of the invention.

Claims (4)

  1. Lamination techniques CLAIMS 1. A method of laminating a pre-printed film onto a substrate such as glass, the method including the steps of taking a relatively stable film, such as a polyester film, having a solvent based adhesive, such as an acrylic adhesive on one side of the film, printing a desired design onto the other side of the film, spraying water onto one side of a substrate, such as a sheet of glass, thereafter placing the pre-printed film adhesive side down onto the substrate above the layer of water such that it "floats" on the surface, following any positional adjustment of the film relative to the substrate subsequently causing the laminate to pass between a pair of heated rollers which (1) apply pressure to the laminate to squeeze out water from between the layer of adhesive and substrate and (2) heat the laminate to make it pliable during the process, such that substantially no air pockets are present in the laminate when the laminate exits from the rollers.
  2. 2. The method according to Claim 1 further characterised in that the rollers have an elastomeric coating, such as rubber, to prevent or inhibit breakage of the substrate.
  3. 3. The method according to Claim 1 or Claim 2 further characterised in that the rollers are heated to around
    <Desc/Clms Page number 8>
    Lamination techniques 130 in order to impart the desired pliability to the film.
  4. 4. A laminated sheet made in accordance with the method of any preceding claim.
    S. A method of laminating a pre-printed film onto a substrate substantially as hereinbefore described with reference to the drawings.
GB0202948A 2002-02-08 2002-02-08 Technique for laminating films to glass substrates Withdrawn GB2385022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0202948A GB2385022A (en) 2002-02-08 2002-02-08 Technique for laminating films to glass substrates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0202948A GB2385022A (en) 2002-02-08 2002-02-08 Technique for laminating films to glass substrates

Publications (2)

Publication Number Publication Date
GB0202948D0 GB0202948D0 (en) 2002-03-27
GB2385022A true GB2385022A (en) 2003-08-13

Family

ID=9930663

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0202948A Withdrawn GB2385022A (en) 2002-02-08 2002-02-08 Technique for laminating films to glass substrates

Country Status (1)

Country Link
GB (1) GB2385022A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100379324C (en) * 2005-01-10 2008-04-02 安捷利（番禺）电子实业有限公司 Wet filming method of flexible printed circuit
NL2002940C2 (en) * 2009-05-28 2010-11-30 Triple R Holding B V METHOD OF PAINTING AN IMAGE ON PLEXIGLAS.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119310A (en) * 1982-04-29 1983-11-16 Daryl Ind Ltd Laminated body
GB2230734A (en) * 1989-03-31 1990-10-31 Albert Michael Keane Graphic display panels
GB2254042A (en) * 1991-03-26 1992-09-30 David Casey Improvements relating to decorative glass
US5749994A (en) * 1995-11-16 1998-05-12 Minnesota Mining And Manufacturing Company Laminate for precise application of graphics to a substrate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119310A (en) * 1982-04-29 1983-11-16 Daryl Ind Ltd Laminated body
GB2230734A (en) * 1989-03-31 1990-10-31 Albert Michael Keane Graphic display panels
GB2254042A (en) * 1991-03-26 1992-09-30 David Casey Improvements relating to decorative glass
US5749994A (en) * 1995-11-16 1998-05-12 Minnesota Mining And Manufacturing Company Laminate for precise application of graphics to a substrate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100379324C (en) * 2005-01-10 2008-04-02 安捷利（番禺）电子实业有限公司 Wet filming method of flexible printed circuit
NL2002940C2 (en) * 2009-05-28 2010-11-30 Triple R Holding B V METHOD OF PAINTING AN IMAGE ON PLEXIGLAS.

Also Published As

Publication number Publication date
GB0202948D0 (en) 2002-03-27

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)