WO1997015430A1 - Articles stratifies - Google Patents

Articles stratifies Download PDF

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Publication number
WO1997015430A1
WO1997015430A1 PCT/AU1996/000665 AU9600665W WO9715430A1 WO 1997015430 A1 WO1997015430 A1 WO 1997015430A1 AU 9600665 W AU9600665 W AU 9600665W WO 9715430 A1 WO9715430 A1 WO 9715430A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper
sheet
print
impregnated
surface sheet
Prior art date
Application number
PCT/AU1996/000665
Other languages
English (en)
Inventor
Denis Louis Elton Griffin
Original Assignee
Maecher Pictureproducts Pty. Limited
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
Priority claimed from AU34455/95A external-priority patent/AU668069C/en
Application filed by Maecher Pictureproducts Pty. Limited filed Critical Maecher Pictureproducts Pty. Limited
Priority to AU72665/96A priority Critical patent/AU7266596A/en
Publication of WO1997015430A1 publication Critical patent/WO1997015430A1/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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/088—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers and with one or more layers of non-plastics material or non-specified material, e.g. supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B29K2711/126—Impregnated
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/028—Paper layer
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • 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
    • B32B2317/00—Animal or vegetable based
    • B32B2317/12—Paper, e.g. cardboard
    • B32B2317/125—Paper, e.g. cardboard impregnated with thermosetting resin
    • 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
    • B32B2451/00—Decorative or ornamental articles

Definitions

  • the present invention relates to laminating products and, in particular, concerns applying a decorative design by laminating to a substrate.
  • One example of application of the invention is to the decoration of melamine articles, such as plates.
  • Australian Patent No 459,410 (25,681 /71 ) describes a process for laminating articles, such as melamine plates, and wherein a sandwich is formed of (a) a surface sheet of non-pigmented paper impregnated with thermosetting melamine-formaldehyde resin, (b) a decorated sheet of ordinary paper and (c) an underlying sheet of paper impregnated with thermosetting melamine-formaldehyde resin.
  • This sandwich is laminated to a substrate by applying heat and pressure to the assembly to cause bonding and to form a decorated article.
  • a method of producing a decorated laminated product comprising printing a digitally stored image of the decorative material onto a coated paper to form a relatively high definition print, locating the print beneath a paper surface sheet impregnated with a thermosetting melamine-formaldehyde resin, positioning a second paper sheet impregnated with a thermosetting melamine-formaldehyde resin below the print, locating the assembly so formed over material for forming a rigid substrate, and applying heat and pressure to bond the assembly and the substrate to form a rigid product, the thermosetting resin providing a transparent protective covering over the print and bonding the print into the product.
  • impregnation of the surface sheet and of the second sheet is such that the weight of resin is one and a half to three times the weight of the paper.
  • the paper onto which printing occurs has low sheen, such as Epson Special Coated Paper suitable for 720 dpi printing (product code
  • the method is initiated by first scanning artwork, such as a photographic print, into a computer to provide digitally stored information for the printing process.
  • Successful scanning has been achieved of photographs using an Epson GT 9000 colour image scanner with Adobe
  • the printing step can be carried out with the use of a high quality colour printer, such as an Epson Stylus Pro printer, which operates at about 720 dpi.
  • the invention extends to a laminated product produced by the aforementioned method.
  • An ordinary coloured photograph was scanned using an Epson GT 9000 colour image scanner using Adobe Photoshop software and a digitally stored image was thus recorded using a personal computer.
  • the computer was connected to an Epson Stylus Pro colour printer and Epson special coated paper for 720 dpi printing was used. A print was made.
  • a surface sheet was prepared by impregnating a sheet of an alpha cellulose paper with an aqueous solution of a melamine-formaldehyde reaction product. Before impregnation, the alpha cellulose paper was .0045 inch thick and weighed 4.4 grams per square foot. After impregnation, the surface sheet was dried at 270°F for about one minute. The dried impregnated surface sheet was approximately .007 inch thick and consisted of 31 % by weight of alpha cellulose and 69% by weight of melamine-formaldehyde reaction product.
  • An assembly comprising a first impregnated sheet, the colour print and a second impregnated sheet, each being circular in shape and with a diameter slightly more than the diameter of the dinner plate to be decorated.
  • Finely divided commercial alpha cellulose-filled melamine- formaldehyde moulding composition in an amount sufficient to produce a dinner plate, was consolidated under pressure into a preform, was preheated, and was placed between the dies which were used to form the dinner plate.
  • the dies were at a temperature of 31 5°F, and they were closed upon the preform of the moulding composition under a pressure of about 3,000 lbs per square inch, and were held closed under that pressure for 80 seconds.
  • the dies were then opened, and a subassembly of the sheets consisting of the non-impregnated printed sheet with the printed side uppermost, between two impregnated sheets, was placed on top of the moulding composition and the dies were then immediately closed to hold the assembly under the same pressure and temperature for 85 seconds.
  • the dies were then opened and the dinner plate was ejected.
  • the surface sheet which is used in producing a decorated moulded article consists of unpigmented paper impregnated with 1 V to 3 times its weight of a thermosetting aminoplast.
  • the paper used for impregnation with a thermosetting aminoplast preferably consists of a substantially pure cellulose.
  • the paper may consist of 1 00% alpha cellulose fibre, or it may consist of a mixture of alpha cellulose fibre and rayon fibre, the proportion of each fibre usually being between 40% and 60% by weight.
  • the additional sheet of paper, impregnated with a thermosetting aminoplast, interposed between the decorated paper sheet and the resin- impregnated moulding composition serves as a wick for supplying the fused aminoplast to the underside of the decorated paper sheet immediately after the application of heat and pressure to the assembly.
  • the additional paper sheet may be made of any desired material which can be impregnated with a thermosetting aminoplast.
  • the thermosetting aminoplast preferably is applied in the form of an aqueous solution.
  • the concentration of the impregnating solution may be any concentration which makes it possible to impart the desired amount of the aminoplast to the paper by an impregnating operation. Ordinarily the concentration of an aqueous solution of the aminoplast is from about 30% to about 70% solids.
  • a solution of a thermosetting aminoplast may be used to impregnate the paper in the usual manner.
  • a continuous web of paper may be fed from a supply roll, and may be impregnated by means of coating rolls, or by passing it beneath the surface of the solution.
  • Preferably the paper is initially impregnated by means of rolls and then is passed through the solution.
  • the preferred aminoplast for use in the practice of the present invention is a melamine-formaldehyde reaction product
  • other amino triazines or other aldehydes such as the amino triazines and aldehydes listed in US Patent No 2,841 ,571 , may be used in preparing the aminoplast.
  • One amino triazine which may be used in place of melamine is gamma-methyl-gamma-acetyloimeloguanamine.
  • Another amino triazine which may be used in place of melamine to produce an aminoplast for use in the practice of the present invention is 2-methyl glutaroguanamine.
  • Either of those amino triazines, which are diguanamines, may be used to replace all or part of the melamine, for the reaction with formaldehyde to produce an aminoplast for use in embodiments of the invention.
  • a monoguanamine may be used to replace part of the melamine. For example, the resistance to coffee staining may be improved by replacing as much as 80 vol% of the melamine with benzoguanamine.
  • the resin impregnated moulding composition may be any finely divided composition such as melamine-formaldehyde or urea-formaldehyde moulding composition.
  • a solution of a melamine-formaldehyde reaction product which is the same as the solution used to impregnate the surface sheet may be employed to impregnate bleached sulfite pulp, or any other cellulosic filler.
  • the dried impregnated filler which preferably contains about 60 to 75% by weight of the formaldehyde-melamine reaction product and from about 25 to 40% of cellulose, is ground to a fine powder, together with modifiers such as pigments, zinc stearate or other lubricants, and phthalic anhydride or other acidic materials which serve as curing catalysts.
  • EXAMPLE 2 A side plate was formed using the same steps as in example 1 except the side plate had an initial moulding of the plate body portion for 50 seconds and the step of bonding the assembly to the surface of the substrate was achieved in 70 seconds.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention porte sur un article stratifié décoré, une assiette par exemple, que l'on obtient en prenant une image à mémorisation numérique d'un matériau de décoration et en l'imprimant sur un papier couché de manière à produire une impression haute définition que l'on dispose ensuite au-dessous d'une surface de papier imprégnée d'une résine thermodurcissable. Une seconde feuille de papier, également imprégnée de résine thermodurcissable, est alors placée sous l'impression et l'ensemble ainsi constitué est placé au-dessus d'un matériau destiné à former un substrat rigide, une assiette par exemple. On chauffe et on applique une pression pour lier l'ensemble au substrat. Du fait de ce procédé, la résine thermodurcissable permet d'obtenir un revêtement protecteur transparent au-dessus de l'impression et fixe cette dernière à l'article.
PCT/AU1996/000665 1995-10-23 1996-10-22 Articles stratifies WO1997015430A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU72665/96A AU7266596A (en) 1995-10-23 1996-10-22 Laminated products

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU34455/95A AU668069C (en) 1995-10-23 Laminated products
AU34455/95 1995-10-23

Publications (1)

Publication Number Publication Date
WO1997015430A1 true WO1997015430A1 (fr) 1997-05-01

Family

ID=3721779

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1996/000665 WO1997015430A1 (fr) 1995-10-23 1996-10-22 Articles stratifies

Country Status (2)

Country Link
WO (1) WO1997015430A1 (fr)
ZA (1) ZA968745B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0936080A2 (fr) * 1998-02-11 1999-08-18 Fischer Gesellschaft m.b.H. Procédé de décoration de skis ou similaires
NL1014079C2 (nl) * 2000-01-13 2001-07-16 Abet B V Werkwijze voor het vervaardigen van laminaten.
FR2821014A1 (fr) * 2001-02-19 2002-08-23 Jean Jacques Hollmann Procede de realisation d'une plaque stratifiee, plaque stratifiee obtenue par la mise en oeuvre du procede et dispositif permettant la mise en oeuvre du procede

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2637363A (en) * 1963-01-16 1964-07-16 Brookpark, Inc Single-stage process for molding decorated plastic tableware
AU2568171A (en) * 1971-02-19 1972-08-24 Plastics Manufacturing Co. Decorated laminated article and method of making it
JPS506683A (fr) * 1973-05-21 1975-01-23
JPS511574A (en) * 1974-06-26 1976-01-08 Kojin Kk Keshoshiitono seizohoho
JPS53139665A (en) * 1977-05-12 1978-12-06 Toppan Printing Co Ltd Production of decorative material
EP0054405A1 (fr) * 1980-12-12 1982-06-23 Devon Valley Industries Limited Procédé pour la préparation de stratifiés décoratifs
US4470861A (en) * 1980-03-21 1984-09-11 The Vollrath Company Decorated laminate having indicia applied photoelectrographically and method of making same
JPS6197498A (ja) * 1984-10-09 1986-05-15 凸版印刷株式会社 強化紙
EP0519242A1 (fr) * 1991-06-21 1992-12-23 Formica Corporation Produit stratifié décoratif résistant à l'usure ayant une apparence et une nettoyabilité excellentes et son procédé de fabrication

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2637363A (en) * 1963-01-16 1964-07-16 Brookpark, Inc Single-stage process for molding decorated plastic tableware
AU2568171A (en) * 1971-02-19 1972-08-24 Plastics Manufacturing Co. Decorated laminated article and method of making it
JPS506683A (fr) * 1973-05-21 1975-01-23
JPS511574A (en) * 1974-06-26 1976-01-08 Kojin Kk Keshoshiitono seizohoho
JPS53139665A (en) * 1977-05-12 1978-12-06 Toppan Printing Co Ltd Production of decorative material
US4470861A (en) * 1980-03-21 1984-09-11 The Vollrath Company Decorated laminate having indicia applied photoelectrographically and method of making same
EP0054405A1 (fr) * 1980-12-12 1982-06-23 Devon Valley Industries Limited Procédé pour la préparation de stratifiés décoratifs
JPS6197498A (ja) * 1984-10-09 1986-05-15 凸版印刷株式会社 強化紙
EP0519242A1 (fr) * 1991-06-21 1992-12-23 Formica Corporation Produit stratifié décoratif résistant à l'usure ayant une apparence et une nettoyabilité excellentes et son procédé de fabrication

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DERWENT ABSTRACT, Accession No. 04913B/03, Class A32, G05, P42; & JP,A,53 139 665 (TOPPAN PRINTING) 6 December 1978. *
DERWENT ABSTRACT, Accession No. 13865X/08, Class A32, P73; & JP,A,51 001 574 (KOJIN) 8 January 1976. *
DERWENT ABSTRACT, Accession No. 50068W/30, Class A81; & JP,A,50 006 683 (IBIGAWA ELECTRIC) 23 January 1975. *
DERWENT ABSTRACTS, Accession No. 86-165331/26, Class P73; & JP,A,61 097 498 (TOPPAN PRINTING ) 15 May 1986. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0936080A2 (fr) * 1998-02-11 1999-08-18 Fischer Gesellschaft m.b.H. Procédé de décoration de skis ou similaires
EP0936080A3 (fr) * 1998-02-11 2000-07-05 Fischer Gesellschaft m.b.H. Procédé de décoration de skis ou similaires
NL1014079C2 (nl) * 2000-01-13 2001-07-16 Abet B V Werkwijze voor het vervaardigen van laminaten.
FR2821014A1 (fr) * 2001-02-19 2002-08-23 Jean Jacques Hollmann Procede de realisation d'une plaque stratifiee, plaque stratifiee obtenue par la mise en oeuvre du procede et dispositif permettant la mise en oeuvre du procede

Also Published As

Publication number Publication date
AU668069B3 (en) 1996-04-18
ZA968745B (en) 1999-05-25

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