CA2177433A1 - Plastic-paper composite in foil form and its use for producing weatherproof laminated sheets with surface protection - Google Patents
Plastic-paper composite in foil form and its use for producing weatherproof laminated sheets with surface protectionInfo
- Publication number
- CA2177433A1 CA2177433A1 CA002177433A CA2177433A CA2177433A1 CA 2177433 A1 CA2177433 A1 CA 2177433A1 CA 002177433 A CA002177433 A CA 002177433A CA 2177433 A CA2177433 A CA 2177433A CA 2177433 A1 CA2177433 A1 CA 2177433A1
- Authority
- CA
- Canada
- Prior art keywords
- plastic
- layer
- paper
- paper composite
- laminated sheet
- 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.)
- Abandoned
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 78
- 239000011888 foil Substances 0.000 title claims description 19
- 239000010410 layer Substances 0.000 claims abstract description 113
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 39
- -1 polypropylene Polymers 0.000 claims abstract description 21
- 229920000728 polyester Polymers 0.000 claims abstract description 15
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 9
- 239000000057 synthetic resin Substances 0.000 claims abstract description 9
- 239000004743 Polypropylene Substances 0.000 claims abstract description 7
- 229920001155 polypropylene Polymers 0.000 claims abstract description 7
- 239000002344 surface layer Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 17
- 239000004922 lacquer Substances 0.000 claims description 14
- 239000004925 Acrylic resin Substances 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 8
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims 2
- 239000004416 thermosoftening plastic Substances 0.000 claims 2
- 229920000178 Acrylic resin Polymers 0.000 description 11
- 229920000877 Melamine resin Polymers 0.000 description 10
- 239000004640 Melamine resin Substances 0.000 description 9
- 239000004698 Polyethylene Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000012876 carrier material Substances 0.000 description 5
- 239000005011 phenolic resin Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 3
- 239000003522 acrylic cement Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000004923 Acrylic lacquer Substances 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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
- 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
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
-
- 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
- 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
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/06—Layered products comprising a layer of paper or cardboard specially treated, e.g. surfaced, parchmentised
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/84—Paper comprising more than one coating on both sides of the substrate
-
- 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
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- 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
-
- 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
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention concerns a plastics-paper composite which substantially consists of a paper layer (5), a polypropylene layer (6) and a polyester layer (7), the polyester layer forming one of the two surface layers of the plastics-paper composite. This plastics-paper composite is used to produce weatherproof laminated sheets (13) with surface protection, an acrylate layer (8, 11) being applied to the polyester layer of the plastics-paper composite. This composite is stacked on one or both sides with a plurality of papers impregnated with synthetic resin to form a stack, the acrylate layer(s) lying against the outermost paper layer(s) (9). This stack is then pressed at high pressure and high temperature.
For use, the surface protection is removed from the acrylate layer as from the polyester layer.
For use, the surface protection is removed from the acrylate layer as from the polyester layer.
Description
PLASTIC-PAPER COMPOSITE D~ FOIL FORM
AND ITS USE FOR PRODUCING WEATHERP~OOF LAMINATED SHEETS
W~H SURFACE PROTECTION
The invention relates to a plastic-paper composite in foil form as well as S its use for producing ~,v~ o~r laminated sheets with surface protection.
State of th~
Laminated sheets are produced by Co~ Jlc~iulg a stack comprised of a quantity of resin-covered paper strips. A decorated paper strip illl~lC/,, ' ~ with melamine resin is placed on one of the two surfaces of a stack that is made up, for example, of several papers iullplc~lldL~d with phenol resin, and is then ~;~,I.I~I~;,i,~d with it. As a result of this measure, the laminated sheet is provided with a very hard, scratch-proof, strong decorated surface.
These decorated laminated sheets are used indoors for ,.,A""rA. ll";"g furniture, but can be used outdoors as well. In outdoor use, however, it has been found that the decorated laminated sheets tend to get scratched off, whereby thevisual dl,~cal~ ce of the cover is c~Jllsidcldl,ly impaired.
It has long been an object, therefore, to produce decorative laminated sheets for outdoor use that are weatherproof. Thus, weather protection can be provided in the form of a lacquer layer or a foil. Preferred materials are thosebased on acrylic resins which make durable w~ of ing possible. By using acrylic resin lacquer for producing the wcdLIlcll,.uur outer sheets, according to EP-A-281586, one or both outer layers of the stdcks consisting of the paper layers illl~llC~, ' 1 with plastic resin are covered with an acrylic lacquer and then cvllll,lci,~cd in a press at an increasing pressure and t~ .tulc. The acrylic resin lacquer, however, has the disddv~lllL~ that steel plates, matrices, or separating papers can adhere to the Culll~ iOII equipment, which leads to the formation of decorative surfaces with Ulld~Lldl,LiVC visual qualities.
When using foils with an acrylate base, for example, it has been llll"~ d that they are difficult to handle during the ~ulll~ ioll operation, since they rip easily, wrinkle, and roll up. This often leads to the necessity of using manual assistance, which is costly, and can lead to faulty production processes as well.
It is also known that plastic foils can be used as carrier material for ~._a~ uof lacquers, especially acrylic resin lacquer, which are applied on one or both sides of the stack consisting of paper layers i~ " ' with synthetic resin, and can be compressed together with them. After the ~UIIIL~ aiUn operation, the carrier material is peeled off from the acrylic resin sheet, which now forms the weatherproof outer surface of the laminated sheet. Since this allallb~ .l consisting of the carrier material and the acrylic resin sheet is very thin, it is difficult to handle and easily slips off the pressing stack. Additional pattern producers, such as pressing plates or matrices, are needed in order to ûbtain a decorated surface for the w~;alllel~luof laminated sheet. The surface hardness of acrylic resin sheets is also less than that of melamine surfaces, so that during ILdlli~lJOI Laliull between processes during production, and also when handled by the user, especially during the cutting and mounting of plates of up to 70 Kg, the acrylic resin sheet can be damaged.
The object of the invention is then to provide a plastic-paper combination foil of the type described above that can be used as carrier material for the acrylic sheet provided with w~a~ JIuof protection that does not exhibit the known di~ad~allLabe~, and which serves as a shaper - in-iPpPn~lPn~ from its function as carrier material - during the pressing operation, and, at the same time, which builds a removable surface protection provided with a weatherproof protection, for example, for llal~OILaLiull.
D~.. ', ' of the Invention According to the invention, a plastic-paper composite is proposed, which is in foil form and is made up of a paper layer, a polypropylene layer, and a polyester layer, and wherein the polyester layer forms one of the two surface layers of the plastic-paper composite.
AND ITS USE FOR PRODUCING WEATHERP~OOF LAMINATED SHEETS
W~H SURFACE PROTECTION
The invention relates to a plastic-paper composite in foil form as well as S its use for producing ~,v~ o~r laminated sheets with surface protection.
State of th~
Laminated sheets are produced by Co~ Jlc~iulg a stack comprised of a quantity of resin-covered paper strips. A decorated paper strip illl~lC/,, ' ~ with melamine resin is placed on one of the two surfaces of a stack that is made up, for example, of several papers iullplc~lldL~d with phenol resin, and is then ~;~,I.I~I~;,i,~d with it. As a result of this measure, the laminated sheet is provided with a very hard, scratch-proof, strong decorated surface.
These decorated laminated sheets are used indoors for ,.,A""rA. ll";"g furniture, but can be used outdoors as well. In outdoor use, however, it has been found that the decorated laminated sheets tend to get scratched off, whereby thevisual dl,~cal~ ce of the cover is c~Jllsidcldl,ly impaired.
It has long been an object, therefore, to produce decorative laminated sheets for outdoor use that are weatherproof. Thus, weather protection can be provided in the form of a lacquer layer or a foil. Preferred materials are thosebased on acrylic resins which make durable w~ of ing possible. By using acrylic resin lacquer for producing the wcdLIlcll,.uur outer sheets, according to EP-A-281586, one or both outer layers of the stdcks consisting of the paper layers illl~llC~, ' 1 with plastic resin are covered with an acrylic lacquer and then cvllll,lci,~cd in a press at an increasing pressure and t~ .tulc. The acrylic resin lacquer, however, has the disddv~lllL~ that steel plates, matrices, or separating papers can adhere to the Culll~ iOII equipment, which leads to the formation of decorative surfaces with Ulld~Lldl,LiVC visual qualities.
When using foils with an acrylate base, for example, it has been llll"~ d that they are difficult to handle during the ~ulll~ ioll operation, since they rip easily, wrinkle, and roll up. This often leads to the necessity of using manual assistance, which is costly, and can lead to faulty production processes as well.
It is also known that plastic foils can be used as carrier material for ~._a~ uof lacquers, especially acrylic resin lacquer, which are applied on one or both sides of the stack consisting of paper layers i~ " ' with synthetic resin, and can be compressed together with them. After the ~UIIIL~ aiUn operation, the carrier material is peeled off from the acrylic resin sheet, which now forms the weatherproof outer surface of the laminated sheet. Since this allallb~ .l consisting of the carrier material and the acrylic resin sheet is very thin, it is difficult to handle and easily slips off the pressing stack. Additional pattern producers, such as pressing plates or matrices, are needed in order to ûbtain a decorated surface for the w~;alllel~luof laminated sheet. The surface hardness of acrylic resin sheets is also less than that of melamine surfaces, so that during ILdlli~lJOI Laliull between processes during production, and also when handled by the user, especially during the cutting and mounting of plates of up to 70 Kg, the acrylic resin sheet can be damaged.
The object of the invention is then to provide a plastic-paper combination foil of the type described above that can be used as carrier material for the acrylic sheet provided with w~a~ JIuof protection that does not exhibit the known di~ad~allLabe~, and which serves as a shaper - in-iPpPn~lPn~ from its function as carrier material - during the pressing operation, and, at the same time, which builds a removable surface protection provided with a weatherproof protection, for example, for llal~OILaLiull.
D~.. ', ' of the Invention According to the invention, a plastic-paper composite is proposed, which is in foil form and is made up of a paper layer, a polypropylene layer, and a polyester layer, and wherein the polyester layer forms one of the two surface layers of the plastic-paper composite.
The plastic-paper composite of the invention is further characterized in that the layers of the plastic-paper composite are connected with one another by means of a non-th~l~uu~ld~Li,, adhesive which is, to its advantage, an acrylic adhesive.
The plastic-paper composite according to the invention has a polyester 5layer which is made of polyethylene I~ LI-àlaL~.
Another av~allia~UU~ feature of the invention of the plastic-paper composite is that the thickness of the polyethylene terephthalate layer is 6 to 100 ,um, preferably 12 to 25 ~m; that the paper used for the paper layer has a weight of 25 to 2~0 g/m3, preferably 30 to 100 g/m3; and that the thickness of the 10poly~lu~yl~lle layer is 12 to 100 ,um, preferably 12 to 25 ~m.
The plastic-paper composite according to the invention is further chald.,~ ,d in that it has an acrylate layer on the polyethylene l~lc~l.ll.dlatclayer with a thickness of at least 30 ~m, wherein the acrylate layer is in foil form or in the form of a lacquer layer.
15The plastic-paper composite of the invention is used advantageously for producing a ~v~a~ luur press plate layer with surface protection.
The invention further refers to a process for producing a ~Iv~aLll~l~lvOf laminated sheet with surface protection, wherein an acrylic layer is applied over a plastic-paper composite in foil form, so that the foil ~vulbillàliull~ obtained in 20this way can be made up, on one or both sides, from several papers illl~ llaL~d with resin, forming a stdck wherein the acrylate layer(s) are applied to the outer paper layer(s); this stack is ~,ull~l~l. ,,s~d under pressure and increasing L~IIlLu~la ul~
so that a laminated sheet provided with surface protection is obtained that has the plastic-paper composite produced, with the acrylate serving as ~v.,aLll~l~lvof 25protection applied to one or both outer sides, and the produced laminated sheet of plastic-paper composite that is protected with a surface protection can be peeled from the acrylate layer, tnus obtaining a laminated sheet with a ill~ J,vof protection.
A further variation of the process according to the mvention consists in producing a ~._a~ lvur laminated sheet with surface protection wherein an ~ ' 21 77433 acrylate layer is applied in the form of a lacquer painted onto the polyester layer of a plastic-paper composite, and this composite is stacked with several papers iUllL~ lldk~d with synthetic resin and the acrylate layer(s) lies (lie) on the outer paper layer(s); this stack is culll~l~ai,ed under pressure and increasing t~ )CldlUI~, SO that a laminated sheet provided with surface protection is produced with the plastic-paper composite on which the acrylate layer, which serves as w~ luof protection, is applied on one or both sides, and the layer of the laminated sheet of the plastic-paper composite, which is provided with surface protection, is lined with the acrylate layer so that a laminated sheet provided with w~ lell~luof protection is produced.
In the process for producing w~d~ loof laminated sheets, the plastic-paper composite functions as a carrier for a wcidillel~luurlllg outer layer in the form of an acrylate layer with a surface protection according to the invention, and it is also a surface protector against damage to the acrylate layer during, for example, transport of the laminated sheet produced by the ~:olll~ hlg operation.Sul~ hl~ly, it was found that, during the ~:Olu~ SiUll operation, a good adhesion is produced between the polyethylene terephthalate layer and the acrylate layer without its being necessary to use an additional adhesive substance which could come loose during the use of the weatherproof laminated plate; for example, that the hardened polyethylene terephthalate layer could completely come off during mounting.
Ful~e~ ol~, the plastic-paper composite provides a structure for the surface ~,Ulll~)O~ iUII of the decorative layer, so that adding further pattern producers, for example, patterned pressing plates, becomes ulUl~ dly.
The patterning is provided by the thickness and roughness of the paper layer, as well as by means of its fibrousness. If the patterning properties are too high, then an advd lLgeuu~ embodiment permits switching the paper and propylene layers with each other so that the polypropylene layer is closer to the decorated surface.
~ ' 21 77433 The invention relates further to a process for producing a ~. a~ ,u.uur laminated sheet with surface protection wherein a stack of a quantity of layers of paper illl,UI~ o ' 1 with synthetic resin is built, and one or both outer sides is (are) provided with a lacquer coating on the basis of an acrylate resin, and a plastic-paper composite is applied further on one or both sides of this stack, wherein the polyester layer of the plastic-paper composite lies (lie) on the acrylate layer(s), and this stack is compressed under pressure and increasing ~el..,ueldtul~
so that a surface protection is provided on the laminated sheet, and so that, when using the laminated sheet provided with the surface protection, the acrylate layer is applied to the plastic-paper composite, and a laminated sheet provided with awt;dlllel~loof protection is produced.
The plastic-paper compOSite according to the process of the invention functions as a surface protector and as a pattern producer as well.
Brief D~.,'. ' ûf the Drawings and Examples for the li', ,' ~: of fl-~ Tnyç~
The invention is explained in more detail with reference to Figures 1 and 2 as well as Examples 1 through 3.
Fig. 1 shows the plastic-paper composite of the invention according to the variations of Figs. la, lb, 1c, and ld.
Fig. la shows the plastic-paper composite 1 of the invention comprised by the paper layer 5, the polypropylene layer 6, and the polyethylene terephthalatelayer 7.
Fig. lb shows the plastic-paper composite 2 of the invention comprised of the polypropylene layer 6, the paper layer 5, and the ~oly~ylelle te layer 7.
Fig. 1c shows the plastic-paper composite 3 of the invention comprised by a plastic-paper composite according to Fig. la wherein an acrylate layer 8 is applied to the polyethylene ~1~l ' ' Iayer 7.
~ 21 77433 Fig. ld shows the plastic-paper composite 4 of the invention which is a plastic-paper composite according to Fig. lb wherein the acrylate layer 8 is applied to the polyethylene Lclc~hlllàlaLc layer 7.
Fig. 2 shows a schematic lI,~JlC~CllLatiUII of the production of a laminated S sheet 12 provided with surface protection which can be used to produce a laminated sheet 13 provided with ~,aLh~lJluur protection.
ln Examples 1 and 2, further schematics of a plastic-paper composite 3 are shown as well as a decorated layer illl~)lCI, ' ' with melamine resin or a surface provided with barrier papers 9 and a quantity of papers 10 illl,ul~;llaLcd with phenol resin for the building of a stack which is used in the production of a laminated sheet 13 provided with a surface protection or w~ .uùr protection.
Example 3 shows a schematic of the production of 12 from a plastic-paper composite 1 which is culu~lc,~cd with a stack comprised of a decorated layer 9 illl,ulc~;llalcd with melamine resin provided with an acrylate layer 11 and a quantity of paper strips 10 hlllJlc~llat~l with phenol resin to produce a w~aLl.c.~luur laminated sheet with surface protection.
E~amples 1 to 3:
Example 1:
According to a variation of the process of the invention, the wcalllcl~luuf laminated sheet 12 is provided with surface protection. In the case of its use according to Fig. 2, by removing the composite 1, a laminated sheet 13 provided with ~a~lcllJIuOf protection is produced. The process conslsts of the following process steps:
a) A plastic-paper composite 3 comprised of a paper layer 5 with a thickness of 65 ,um, a polyethylene layer 6 with a thickness of 30 ~bm, and a polyethylene terephthalate layer 7 with a thickness of 12 ~m are formed. The layers 5, 6, and 7 are attached to each other by means of a non-thcllllopld~lic adhesive such as an acrylic adhesive. An acrylic foil 8 is applied by extrusion to the polyester terephthalate side 7 of this plastic-paper composite 3 and this ~ 2177433 extrusion step is carried out without adding adhesive .~"1,~ , a plastic-paper composite according to Fig. la is obtained. The inserted acrylate foil 8 can be colorless if a layer 3 provided with a decoration and i~ le~, 1 with melamine resin is applied; however, it can itself be a decoration carrier, and the decoration layer 9 in the form of a paper layer Ull~ with melamine resin can be omitted.
b) A layered stack is produced in the course of the U~nl~lUi~siUII step.
The series of layers from pressing plate to pressing plate in this stack is as follows:
Steel plate Plastic-paper composite 3 (Decorated paper or barrier paper 9 iUll~ , ' ' with melamine resin) Core paper layers 10 h~ llaLed with phenol resin (Decorated paper or barrier paper 9 hll~l~ ,, ., with resin) Plastic-paper composite 3 Steel plate Layers 9 can be omitted from the stack when usmg a decorated acrylate foil.
c) The layered stack produced in process step b) is guided into a high-pressure press.
d) The layered stack produced according to step b) is compressed at a ~Ill~laLul~ of 130 to 150~C at a pressure of about 70 bar, so that the synthetic resin hardens the paper strips and, at the same time, the plastic-paper composite 3 adheres by means of the acrylate layer to the paper layer UII~ "' i with the synthetic resm and is fixed thereon.
e) The composite processed according to step d), which is in the form of a ~ Lht;l~ L laminated sheet 12 provided with surface protection is cooled at room l~l"~ldLu,e and guided into a high-pressure press.
f) The laminated sheet 12 is trimmed, smoothed, and cut into the desired shape, and can be stored or delivered for further processing.
~ 21 77433 g) In a further processing step of the laminated sheet 12, the plastic-paper composite 1 is peeled from the acrylate layer 8 so that the laminated sheet 13 provided with a wGa~ lvur protection is produced.
Example 2:
5 Process step a) A plastic-paper composite 1 is applied to the polyethylene terephthalate layer 7 with an acyrlic lacquer coating 8 whereby the plastic-paper composite 3 is processed according to Fig. lc. The process steps b) to g) are carried out asin Example 1.
Example 3:
Process step a) A quantity of paper strips illllJlG~ with synthetic resins are stacked one on top of another, and the outer layer, which can be comprised of a core paper layer according to 10 or a decorated paper layer 9 illl~LG,, ' 'I with melamine resin, is provided with an acrylic resin layer 11.
b) A layered stack is formed in the following order:
Steel plate Composite 1 Decorated layer 9 illll.llGL, ' i with melamine resin provided with an acrylic resin lacquer coating on core paper layers 10 hll~ , ' with phenol resin Decorated paper 9 illl~llGL, ' I with melamine resin provided with an acrylic resin lacquer layer Composite 1 Steel plate The process steps c) to g) are carried out as in Example 1.
The examples are considered to be ~Y~ f ' y but not limiting.
- -~ 21 77433 g se The plastic-paper composite of the invention may be used advantageously for the production of a w~aLl~ our laminated sheet with surface protection.
Weather resistance is achieved by an acrylic layer. The surface protection is represented by the plastic-paper composite of the invention so that the w~dLh~ vof laminated sheet provided with the acrylate layer is protected againstdamage caused, for example, during L~ ulLlLiull.
The plastic-paper composite according to the invention has a polyester 5layer which is made of polyethylene I~ LI-àlaL~.
Another av~allia~UU~ feature of the invention of the plastic-paper composite is that the thickness of the polyethylene terephthalate layer is 6 to 100 ,um, preferably 12 to 25 ~m; that the paper used for the paper layer has a weight of 25 to 2~0 g/m3, preferably 30 to 100 g/m3; and that the thickness of the 10poly~lu~yl~lle layer is 12 to 100 ,um, preferably 12 to 25 ~m.
The plastic-paper composite according to the invention is further chald.,~ ,d in that it has an acrylate layer on the polyethylene l~lc~l.ll.dlatclayer with a thickness of at least 30 ~m, wherein the acrylate layer is in foil form or in the form of a lacquer layer.
15The plastic-paper composite of the invention is used advantageously for producing a ~v~a~ luur press plate layer with surface protection.
The invention further refers to a process for producing a ~Iv~aLll~l~lvOf laminated sheet with surface protection, wherein an acrylic layer is applied over a plastic-paper composite in foil form, so that the foil ~vulbillàliull~ obtained in 20this way can be made up, on one or both sides, from several papers illl~ llaL~d with resin, forming a stdck wherein the acrylate layer(s) are applied to the outer paper layer(s); this stack is ~,ull~l~l. ,,s~d under pressure and increasing L~IIlLu~la ul~
so that a laminated sheet provided with surface protection is obtained that has the plastic-paper composite produced, with the acrylate serving as ~v.,aLll~l~lvof 25protection applied to one or both outer sides, and the produced laminated sheet of plastic-paper composite that is protected with a surface protection can be peeled from the acrylate layer, tnus obtaining a laminated sheet with a ill~ J,vof protection.
A further variation of the process according to the mvention consists in producing a ~._a~ lvur laminated sheet with surface protection wherein an ~ ' 21 77433 acrylate layer is applied in the form of a lacquer painted onto the polyester layer of a plastic-paper composite, and this composite is stacked with several papers iUllL~ lldk~d with synthetic resin and the acrylate layer(s) lies (lie) on the outer paper layer(s); this stack is culll~l~ai,ed under pressure and increasing t~ )CldlUI~, SO that a laminated sheet provided with surface protection is produced with the plastic-paper composite on which the acrylate layer, which serves as w~ luof protection, is applied on one or both sides, and the layer of the laminated sheet of the plastic-paper composite, which is provided with surface protection, is lined with the acrylate layer so that a laminated sheet provided with w~ lell~luof protection is produced.
In the process for producing w~d~ loof laminated sheets, the plastic-paper composite functions as a carrier for a wcidillel~luurlllg outer layer in the form of an acrylate layer with a surface protection according to the invention, and it is also a surface protector against damage to the acrylate layer during, for example, transport of the laminated sheet produced by the ~:olll~ hlg operation.Sul~ hl~ly, it was found that, during the ~:Olu~ SiUll operation, a good adhesion is produced between the polyethylene terephthalate layer and the acrylate layer without its being necessary to use an additional adhesive substance which could come loose during the use of the weatherproof laminated plate; for example, that the hardened polyethylene terephthalate layer could completely come off during mounting.
Ful~e~ ol~, the plastic-paper composite provides a structure for the surface ~,Ulll~)O~ iUII of the decorative layer, so that adding further pattern producers, for example, patterned pressing plates, becomes ulUl~ dly.
The patterning is provided by the thickness and roughness of the paper layer, as well as by means of its fibrousness. If the patterning properties are too high, then an advd lLgeuu~ embodiment permits switching the paper and propylene layers with each other so that the polypropylene layer is closer to the decorated surface.
~ ' 21 77433 The invention relates further to a process for producing a ~. a~ ,u.uur laminated sheet with surface protection wherein a stack of a quantity of layers of paper illl,UI~ o ' 1 with synthetic resin is built, and one or both outer sides is (are) provided with a lacquer coating on the basis of an acrylate resin, and a plastic-paper composite is applied further on one or both sides of this stack, wherein the polyester layer of the plastic-paper composite lies (lie) on the acrylate layer(s), and this stack is compressed under pressure and increasing ~el..,ueldtul~
so that a surface protection is provided on the laminated sheet, and so that, when using the laminated sheet provided with the surface protection, the acrylate layer is applied to the plastic-paper composite, and a laminated sheet provided with awt;dlllel~loof protection is produced.
The plastic-paper compOSite according to the process of the invention functions as a surface protector and as a pattern producer as well.
Brief D~.,'. ' ûf the Drawings and Examples for the li', ,' ~: of fl-~ Tnyç~
The invention is explained in more detail with reference to Figures 1 and 2 as well as Examples 1 through 3.
Fig. 1 shows the plastic-paper composite of the invention according to the variations of Figs. la, lb, 1c, and ld.
Fig. la shows the plastic-paper composite 1 of the invention comprised by the paper layer 5, the polypropylene layer 6, and the polyethylene terephthalatelayer 7.
Fig. lb shows the plastic-paper composite 2 of the invention comprised of the polypropylene layer 6, the paper layer 5, and the ~oly~ylelle te layer 7.
Fig. 1c shows the plastic-paper composite 3 of the invention comprised by a plastic-paper composite according to Fig. la wherein an acrylate layer 8 is applied to the polyethylene ~1~l ' ' Iayer 7.
~ 21 77433 Fig. ld shows the plastic-paper composite 4 of the invention which is a plastic-paper composite according to Fig. lb wherein the acrylate layer 8 is applied to the polyethylene Lclc~hlllàlaLc layer 7.
Fig. 2 shows a schematic lI,~JlC~CllLatiUII of the production of a laminated S sheet 12 provided with surface protection which can be used to produce a laminated sheet 13 provided with ~,aLh~lJluur protection.
ln Examples 1 and 2, further schematics of a plastic-paper composite 3 are shown as well as a decorated layer illl~)lCI, ' ' with melamine resin or a surface provided with barrier papers 9 and a quantity of papers 10 illl,ul~;llaLcd with phenol resin for the building of a stack which is used in the production of a laminated sheet 13 provided with a surface protection or w~ .uùr protection.
Example 3 shows a schematic of the production of 12 from a plastic-paper composite 1 which is culu~lc,~cd with a stack comprised of a decorated layer 9 illl,ulc~;llalcd with melamine resin provided with an acrylate layer 11 and a quantity of paper strips 10 hlllJlc~llat~l with phenol resin to produce a w~aLl.c.~luur laminated sheet with surface protection.
E~amples 1 to 3:
Example 1:
According to a variation of the process of the invention, the wcalllcl~luuf laminated sheet 12 is provided with surface protection. In the case of its use according to Fig. 2, by removing the composite 1, a laminated sheet 13 provided with ~a~lcllJIuOf protection is produced. The process conslsts of the following process steps:
a) A plastic-paper composite 3 comprised of a paper layer 5 with a thickness of 65 ,um, a polyethylene layer 6 with a thickness of 30 ~bm, and a polyethylene terephthalate layer 7 with a thickness of 12 ~m are formed. The layers 5, 6, and 7 are attached to each other by means of a non-thcllllopld~lic adhesive such as an acrylic adhesive. An acrylic foil 8 is applied by extrusion to the polyester terephthalate side 7 of this plastic-paper composite 3 and this ~ 2177433 extrusion step is carried out without adding adhesive .~"1,~ , a plastic-paper composite according to Fig. la is obtained. The inserted acrylate foil 8 can be colorless if a layer 3 provided with a decoration and i~ le~, 1 with melamine resin is applied; however, it can itself be a decoration carrier, and the decoration layer 9 in the form of a paper layer Ull~ with melamine resin can be omitted.
b) A layered stack is produced in the course of the U~nl~lUi~siUII step.
The series of layers from pressing plate to pressing plate in this stack is as follows:
Steel plate Plastic-paper composite 3 (Decorated paper or barrier paper 9 iUll~ , ' ' with melamine resin) Core paper layers 10 h~ llaLed with phenol resin (Decorated paper or barrier paper 9 hll~l~ ,, ., with resin) Plastic-paper composite 3 Steel plate Layers 9 can be omitted from the stack when usmg a decorated acrylate foil.
c) The layered stack produced in process step b) is guided into a high-pressure press.
d) The layered stack produced according to step b) is compressed at a ~Ill~laLul~ of 130 to 150~C at a pressure of about 70 bar, so that the synthetic resin hardens the paper strips and, at the same time, the plastic-paper composite 3 adheres by means of the acrylate layer to the paper layer UII~ "' i with the synthetic resm and is fixed thereon.
e) The composite processed according to step d), which is in the form of a ~ Lht;l~ L laminated sheet 12 provided with surface protection is cooled at room l~l"~ldLu,e and guided into a high-pressure press.
f) The laminated sheet 12 is trimmed, smoothed, and cut into the desired shape, and can be stored or delivered for further processing.
~ 21 77433 g) In a further processing step of the laminated sheet 12, the plastic-paper composite 1 is peeled from the acrylate layer 8 so that the laminated sheet 13 provided with a wGa~ lvur protection is produced.
Example 2:
5 Process step a) A plastic-paper composite 1 is applied to the polyethylene terephthalate layer 7 with an acyrlic lacquer coating 8 whereby the plastic-paper composite 3 is processed according to Fig. lc. The process steps b) to g) are carried out asin Example 1.
Example 3:
Process step a) A quantity of paper strips illllJlG~ with synthetic resins are stacked one on top of another, and the outer layer, which can be comprised of a core paper layer according to 10 or a decorated paper layer 9 illl~LG,, ' 'I with melamine resin, is provided with an acrylic resin layer 11.
b) A layered stack is formed in the following order:
Steel plate Composite 1 Decorated layer 9 illll.llGL, ' i with melamine resin provided with an acrylic resin lacquer coating on core paper layers 10 hll~ , ' with phenol resin Decorated paper 9 illl~llGL, ' I with melamine resin provided with an acrylic resin lacquer layer Composite 1 Steel plate The process steps c) to g) are carried out as in Example 1.
The examples are considered to be ~Y~ f ' y but not limiting.
- -~ 21 77433 g se The plastic-paper composite of the invention may be used advantageously for the production of a w~aLl~ our laminated sheet with surface protection.
Weather resistance is achieved by an acrylic layer. The surface protection is represented by the plastic-paper composite of the invention so that the w~dLh~ vof laminated sheet provided with the acrylate layer is protected againstdamage caused, for example, during L~ ulLlLiull.
Claims (14)
1. Plastic-paper composite in foil form comprised basically of a paper layer, a polypropylene layer, and a polyester layer, wherein the polyester layeris one of the two surface layers of the plastic-paper composite.
2. Plastic-paper composite according to claim 1 characterized in that the layers of the plastic-paper composite are attached to each other via a non-thermoplastic adhesive.
3. Plastic-paper composite according to claim 2 characterized in that the non-thermoplastic adhesive is an acrylate adhesive.
4. Plastic-paper composite according to claims 1 to 2 characterized in that the polyester layer is made of polyethylene terephthalate.
5. Plastic-paper composite according to claim 4 characterized in that the polyethylene terephthalate layer has a thickness of 6 to 100 µm, preferably 12 to 25 µm.
6. Plastic-paper composite according to one of claims 1 to 5 characterized in that the paper used in the paper layer has a weight of 25 to 240 gr/m3, preferably 30 to 100 gr/m3.
7. Plastic-paper composite according to one of claims 1 to 6 characterized in that the thickness of the polypropylene layer 12 is up to 100 µm, preferably 12 to 25 µm.
8. Plastic-paper composite according to one of claims 1 to 7 characterized in that the plastic-paper composite has an acrylate layer next to the polyethylene terephthalate with a thickness of at least 30 µm.
9. Plastic-paper composite according to claim 8 characterized in that the acrylate layer is in foil form.
10. Plastic-paper composite according to claim 8 characterized in that the acrylate layer is provided in the form of a lacquer coating.
11. Use of the plastic-paper composite according to one of claims 1 to 10 for producing a weatherproof laminated sheet with surface protection.
12. Process for producing a weatherproof laminated sheet with surface protection characterized in that a) an acrylate layer in the form of a foil without adhesive substance is applied onto a plastic-paper composite according to claims 1 to 7, that b) a quantity of papers impregnated with synthetic resin is applied to the foil composite produced according to a) to form a stack wherein the acrylate layer(s) lies (lie) on the outer paper layer(s), that c) the stack produced according to b) is compresses under pressure and increasing temperature so that a laminated sheet provided with surface protection is obtained, on which the plastic-paper composite produced according to a) is applied to one or both outer layers and is attached to the acrylate layer serving as weatherproof protection, and that d) during the application of the laminated sheet provided with surface protection, the plastic-paper composite is peeled off from the acrylate layer so that a laminated sheet provided with weatherproof protection is obtained.
13. Process for producing a weatherproof laminated sheet with surface protection characterized in that a) an acrylate layer in the form of a lacquer coating is applied onto the polyester layer of a plastic-paper composite according to claims 1 to 7, that b) a quantity of papers impregnated with synthetic resin is applied to the foil composite produced according to a) to form a stack wherein the acrylate layer(s) lies (lie) on the outer paper layer(s), that c) the stack produced according to b) is compressed under pressure and increasing temperature so that a laminated sheet provided with surface protection is obtained, on which is applied to one or both outer layers the plastic-paper composite produced according to a) and to which is attached to the acrylate layer serving as weatherproof protection, and that d) during the application of the laminated sheet provided with surface protection, the plastic-paper composite is peeled off from the acrylate layer so that a laminated sheet provided with weatherproof protection is obtained.
14. Process for producing a weatherproof laminated sheet with surface protection characterized in that a) a stack comprised of a quantity of papers impregnated with synthetic resin is built wherein one or both outer layers are provided with a lacquer coating on the basis of an acrylate resin, that b) on one or both sides of this stack built according to a) a plastic-paper composite according to claims 1 to 7 is applied and the polyester layer of the plastic-paper composite lies on the acrylate layer(s), that c) the stack produced according to b) is compressed under pressure and increasing temperature so that a laminated sheet provided with surface protection is obtained, and that d) during the application of the laminated sheet provided with surface protection, the plastic-paper composite is peeled off from the acrylate layer so that a laminated sheet provided with weatherproof protection is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002177433A CA2177433A1 (en) | 1996-05-27 | 1996-05-27 | Plastic-paper composite in foil form and its use for producing weatherproof laminated sheets with surface protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002177433A CA2177433A1 (en) | 1996-05-27 | 1996-05-27 | Plastic-paper composite in foil form and its use for producing weatherproof laminated sheets with surface protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2177433A1 true CA2177433A1 (en) | 1997-11-28 |
Family
ID=4158282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002177433A Abandoned CA2177433A1 (en) | 1996-05-27 | 1996-05-27 | Plastic-paper composite in foil form and its use for producing weatherproof laminated sheets with surface protection |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2177433A1 (en) |
-
1996
- 1996-05-27 CA CA002177433A patent/CA2177433A1/en not_active Abandoned
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