FR2691668A1 - Transparent film material for making box or window in box - uses two thin layers of polypropylene@, joined together face=to=face with adhesive after electrical, chemical or thermal treatment, etc. - Google Patents
Transparent film material for making box or window in box - uses two thin layers of polypropylene@, joined together face=to=face with adhesive after electrical, chemical or thermal treatment, etc. Download PDFInfo
- Publication number
- FR2691668A1 FR2691668A1 FR9304938A FR9304938A FR2691668A1 FR 2691668 A1 FR2691668 A1 FR 2691668A1 FR 9304938 A FR9304938 A FR 9304938A FR 9304938 A FR9304938 A FR 9304938A FR 2691668 A1 FR2691668 A1 FR 2691668A1
- Authority
- FR
- France
- Prior art keywords
- box
- face
- polypropylene
- sheets
- 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.)
- Granted
Links
- -1 polypropylene Polymers 0.000 title claims abstract description 11
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 11
- 239000000126 substance Substances 0.000 title claims abstract description 7
- 239000000853 adhesive Substances 0.000 title abstract description 5
- 230000001070 adhesive effect Effects 0.000 title abstract description 5
- 239000000463 material Substances 0.000 title description 8
- 238000007669 thermal treatment Methods 0.000 title 1
- 239000004743 Polypropylene Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000003490 calendering Methods 0.000 claims description 2
- 238000003851 corona treatment Methods 0.000 claims description 2
- 239000002985 plastic film Substances 0.000 claims description 2
- 229920006255 plastic film Polymers 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract 3
- 238000005096 rolling process Methods 0.000 abstract 1
- 239000002356 single layer Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 description 6
- 239000004800 polyvinyl chloride Substances 0.000 description 5
- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/412—Transparent
-
- 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
-
- 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
- B32B2439/00—Containers; Receptacles
Landscapes
- Laminated Bodies (AREA)
- Wrappers (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
"PROCEDE DE FABRICATION D'UN FILM TRANSPARENT POUR LA
REALISATION DE FENETRES SUR DES BOITES EN CARTON"
La présente invention concerne un procédé de fabrication d'un film transparent en matière plastique et en particulier un film transparent pour la réalisation de fenêtres sur des boites en carton et/ou pour la réalisation de boites semi-rigides transparentes entières."PROCESS FOR PRODUCING A TRANSPARENT FILM FOR THE
WINDOWS ON CARDBOARD BOXES "
The present invention relates to a method of manufacturing a transparent plastic film and in particular a transparent film for making windows on cardboard boxes and / or for making whole semi-rigid transparent boxes.
Il est très courant de fabriquer des boîtes en carton pour le conditionnement d'objets les plus divers, présentant sur une face une fenêtre fermée par un film en matière plastique transparente de manière à permettre une identification rapide et immédiate des articles se trouvant à l'intérieur. De même, il est courant de fabriquer des boîtes en matière transparente pour le transport de produits divers, dans le but d'en améliorer la présentation et de protéger le contenu. Pour ces deux applications, le film doit être suffisamment robuste pour résister aux chocs inévitables subis pendant le transport et la manipulation des boîtes. La matière plastique la plus couramment utilisée jusqu'à ce jour est le chlorure de polyvinyle (PVC), dans des épaisseurs allant de 80 à 200 pm et parfois plus. It is very common to manufacture cardboard boxes for the packaging of the most diverse objects, having on one side a window closed by a film of transparent plastic material so as to allow rapid and immediate identification of the articles being interior. Similarly, it is common to make boxes of transparent material for the transport of various products, in order to improve the presentation and protect the content. For these two applications, the film must be strong enough to withstand the inevitable shocks suffered during the transport and handling of the boxes. The most commonly used plastic material to date is polyvinyl chloride (PVC), in thicknesses ranging from 80 to 200 µm and sometimes more.
Le PVC est un matériau particulièrement adapté à cette application, grâce à sa grande transparence, sa très bonne usinabilité et sa résistance mécanique, mais il est de moins en moins accepté pour des raisons liées à la pollution, étant donné que lors de sa mise à la décharge il libère des substances hautement toxiques, telles que le monomère chlorure de vinyle (hautement cancérigène), l'acide chlorhydrique et autres composants chlorurés, tout aussi dangereux. Il tend par conséquent à être remplacé par d'autres matières plastiques. PVC is a material particularly suitable for this application, thanks to its high transparency, its very good machinability and its mechanical resistance, but it is less and less accepted for reasons related to pollution, given that when it is put in the discharge it releases highly toxic substances, such as the vinyl chloride monomer (highly carcinogenic), hydrochloric acid and other chlorinated components, just as dangerous. It therefore tends to be replaced by other plastics.
Parmi les matières de remplacement, on peut citer par exemple le triacétate de cellulose ou le polystyrène. Ces matériaux sont toutefois excessivement coûteux et par conséquent ils ne sont utilisés que lorsque la législation interdit d'utiliser le PVC. Among the replacement materials, mention may be made, for example, of cellulose triacetate or polystyrene. These materials are however excessively expensive and therefore they are only used when the law prohibits the use of PVC.
Le but de la présente invention est de proposer l'emploi du polypropylène. Ce polymère est déjà largement utilisé dans les applications les plus diverses, telles que par exemple le conditionnement des fleurs et des produits alimentaires, soit seul, soit en association avec d'autres matériaux en feuilles, tels que papier ou aluminium. The object of the present invention is to propose the use of polypropylene. This polymer is already widely used in the most diverse applications, such as for example the packaging of flowers and food products, either alone or in combination with other sheet materials, such as paper or aluminum.
Malheureusement, la technologie actuelle ne permet que la fabrication de feuilles de polypropylène d'une épaisseur moyenne de 35 ym, et de toute façon non supérieure à 50-60 ssm, et donc bien au-dessous des épaisseurs requises pour des films utilisables dans l'application prévue par la présente invention, c'est-à-dire pour la réalisation de fenêtres de boîtes ou de boîtes entières.Unfortunately, current technology only allows the production of polypropylene sheets with an average thickness of 35 µm, and in any case not more than 50-60 ssm, and therefore well below the thicknesses required for films usable in the film. 'application provided by the present invention, that is to say for the production of box windows or whole boxes.
Cet inconvénient est largement résolu par la présente invention qui propose un procédé de fabrication d'un film transparent pour l'exécution de boîtes ou de fenêtres de boîtes, caractérisé en ce que l'on prend deux feuilles de polypropylène d'épaisseur comprise entre 12 et 60 ssm, on encolle une surface d'au moins l'une des feuilles, on superpose les deux feuilles avec la surface encollée à l'intérieur, et on calandre l'ensemble. This drawback is largely resolved by the present invention which provides a method of manufacturing a transparent film for the execution of boxes or box windows, characterized in that two polypropylene sheets of thickness between 12 are taken. and 60 ssm, a surface of at least one of the sheets is glued, the two sheets are superimposed with the surface glued inside, and the whole is calendered.
Selon une solution préférée, les deux feuilles sont préparées pour être enduites de colle moyennant un traitement superficiel destiné à en accroître la rugosité. According to a preferred solution, the two sheets are prepared to be coated with adhesive by means of a surface treatment intended to increase the roughness.
La présente invention sera maintenant décrite en détail en faisant référence au dessin annexé, sur lequel l'unique figure est une vue schématique en perspective d'une boîte en carton avec une fenêtre réalisée avec le film selon la présente invention. The present invention will now be described in detail with reference to the accompanying drawing, in which the only figure is a schematic perspective view of a cardboard box with a window made with the film according to the present invention.
Sur cette figure on peut voir une boîte en carton 1 présentant sur une face 2 une fenêtre 3 fermée par un film 4 en matière plastique transparente. Comme déjà dit, ce film est constitué par deux feuilles en polypropylène parfaitement assemblées l'une à l'autre. Ces deux feuilles ont chacune la même épaisseur que le polypropylène commercial courant, comprise entre 12 et 60 ym. In this figure we can see a cardboard box 1 having on one side 2 a window 3 closed by a film 4 of transparent plastic. As already said, this film consists of two polypropylene sheets perfectly joined to each other. These two sheets each have the same thickness as the current commercial polypropylene, between 12 and 60 μm.
L'assemblage entre les deux feuilles est obtenu en enduisant de colle au moins une des deux feuilles et en les comprimant ensuite l'une contre l'autre au moyen d'une calandre. La colle utilisée pour l'assemblage est du type généralement utilisé dans l'industrie du cartonnage, diluée dans l'eau ou dans un solvant. L'efficacité de l'assemblage peut être accrue en soumettant les deux feuilles à un traitement Corona, chimique, à la flamme ou autres, en vue d'obtenir un degré de mouillabilité superficielle plus élevé, de manière à supporter l'enduction de colle pour une meilleure adhérence.The assembly between the two sheets is obtained by coating with glue at least one of the two sheets and then compressing them one against the other by means of a calender. The adhesive used for assembly is of the type generally used in the cardboard industry, diluted in water or in a solvent. The effectiveness of the assembly can be increased by subjecting the two sheets to a Corona treatment, chemical, flame or other, in order to obtain a higher degree of surface wettability, so as to support the coating of glue. for better grip.
Un film de ce type conserve pratiquement inaltérée la transparence tout en réalisant une résistance mécanique largement supérieure à celle d'une seule feuille et comparable à celle du PVC. Par ailleurs, l'assemblage qui vient d'être décrit ne présente pas de difficultés particulières, étant donné que l'assemblage du polypropylène avec des matériaux d'autre nature est parfaitement connu et maîtrisé. Ces avantages, en même temps que le coût réduit et la large diffusion du polypropylène sur le marché, permettent d'obtenir un produit final ayant un coût et des caractéristiques tout à fait comparables à celles du PVC, en permettant d'autre part un impact moins pénalisant pour l'environnement. A film of this type retains transparency almost unaltered while achieving a mechanical resistance far greater than that of a single sheet and comparable to that of PVC. Furthermore, the assembly which has just been described does not present any particular difficulties, since the assembly of polypropylene with materials of other nature is perfectly known and mastered. These advantages, at the same time as the reduced cost and the wide distribution of polypropylene on the market, make it possible to obtain a final product having a cost and characteristics entirely comparable to those of PVC, while also allowing an impact. less damaging to the environment.
Pour permettre le collage sur une boîte en carton, on pourra soumettre une seule ou les deux faces extérieures des feuilles de polypropylène à un traitement Corona, chimique ou à la flamme. To allow bonding to a cardboard box, one or both of the outer sides of the polypropylene sheets may be subjected to a Corona, chemical or flame treatment.
I1 va de soi que l'invention est susceptible de modifications par rapport à l'exemple décrit et illustré, sans pour autant sortir du cadre des revendications qui vont suivre. On pourra en particulier traiter les surfaces d'une manière autre qu'avec le traitement Corona, chimique ou à la flamme, à condition d'obtenir des résultats analogues. D'autre part, le film selon l'invention pourra être utilisé également pour fabriquer une boîte entièrement en matière plastique transparente. It goes without saying that the invention is susceptible of modifications compared to the example described and illustrated, without however departing from the scope of the claims which will follow. In particular, surfaces may be treated in a manner other than Corona, chemical or flame treatment, provided that similar results are obtained. On the other hand, the film according to the invention can also be used to manufacture a box made entirely of transparent plastic.
Claims (6)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI921003A IT1254936B (en) | 1992-04-28 | 1992-04-28 | TRANSPARENT FILM FOR THE WINDOW OF CARDBOARD BOXES. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2691668A1 true FR2691668A1 (en) | 1993-12-03 |
| FR2691668B3 FR2691668B3 (en) | 1994-07-08 |
Family
ID=11363088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9304938A Expired - Lifetime FR2691668B3 (en) | 1992-04-28 | 1993-04-27 | PROCESS FOR PRODUCING A TRANSPARENT FILM FOR THE PRODUCTION OF WINDOWS ON CARDBOARD BOXES. |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE9306672U1 (en) |
| ES (1) | ES1024652Y (en) |
| FR (1) | FR2691668B3 (en) |
| IT (1) | IT1254936B (en) |
-
1992
- 1992-04-28 IT ITMI921003A patent/IT1254936B/en active IP Right Grant
-
1993
- 1993-04-26 ES ES9301123U patent/ES1024652Y/en not_active Expired - Fee Related
- 1993-04-27 FR FR9304938A patent/FR2691668B3/en not_active Expired - Lifetime
- 1993-04-27 DE DE9306672U patent/DE9306672U1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ES1024652Y (en) | 1994-05-01 |
| FR2691668B3 (en) | 1994-07-08 |
| DE9306672U1 (en) | 1993-08-05 |
| ES1024652U (en) | 1993-09-01 |
| IT1254936B (en) | 1995-10-11 |
| ITMI921003A1 (en) | 1993-10-28 |
| ITMI921003A0 (en) | 1992-04-28 |
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