METHOD FOR PRODUCING MULTILAYER LAMINATED FILM

• US 20100206478A1
• Filed: 04/27/2010
• Published: 08/19/2010
• Est. Priority Date: 07/12/2006
• Status: Abandoned Application

• Current Assignee: Nitto Denko Corporation
• Original Assignee: Nitto Denko Corporation
• Inventors: FUJITA, Yutaka, TSUCHIMOTO, Kazuki, OOURA, Takafumi, IKESHIMA, Kentarou, WADA, Morimasa, SENOO, Tomoyuki, MASUDA, Tomoaki
• Application Number:
  US12/767,947
• Publication Number:
  US 20100206478A1
• Time in Patent Office: Days
• US Class Current: 156/324
• CPC Class Codes: B29C 65/48 using adhesives , i.e. using supplementary joining material; solvent bonding
• CPC Class Codes: B29C 65/4815 Hot melt adhesives, e.g. thermoplastic adhesives
• CPC Class Codes: B29C 65/482 Drying adhesives, e.g. solvent based adhesives
• CPC Class Codes: B29C 65/4825 Pressure sensitive adhesives
• CPC Class Codes: B29C 65/483 Reactive adhesives, e.g. chemically curing adhesives
• CPC Class Codes: B29C 65/4855 characterised by their physical properties, e.g. being electrically-conductive
• CPC Class Codes: B29C 65/4865 containing additives C09J11/00 and subgroups take precedence
• CPC Class Codes: B29C 65/5057 positioned between the surfaces to be joined B29C65/5035 takes precedence
• CPC Class Codes: B29C 65/52 characterised by the way of applying the adhesive B29C65/50 takes precedence; apparatus for applying liquids in general B05C; processes for applying liquids in general B05D
• CPC Class Codes: B29C 66/1122 Single lap to lap joints, i.e. overlap joints B29C66/45, B29C66/472, B29C66/52272 take precedence
• CPC Class Codes: B29C 66/342 Preventing air-inclusions
• CPC Class Codes: B29C 66/45 Joining of substantially the whole surface of the articles methods or apparatus for laminating B32B37/00
• CPC Class Codes: B29C 66/71 characterised by the composition of the plastics material of the parts to be joined welding bar compositions B29C65/125
• CPC Class Codes: B29C 66/723 being multi-layered B29C66/7292, B29C66/72941 take precedence
• CPC Class Codes: B29C 66/73171 Hydrophilicity
• CPC Class Codes: B29C 66/7332 at least one of the parts to be joined being coloured
• CPC Class Codes: B29C 66/73366 both parts to be joined being transparent or translucent to visible light
• CPC Class Codes: B29C 66/7338 at least one of the parts to be joined being polarising
• CPC Class Codes: B29C 66/737 characterised by the state of the material of the parts to be joined
• CPC Class Codes: B29C 66/73711 oriented
• CPC Class Codes: B29C 66/7392 : characterised by the material of at least one of the parts being a thermoplastic
• CPC Class Codes: B29C 66/73921 : characterised by the materials of both parts being thermoplastics
• CPC Class Codes: B29C 66/7394 : characterised by the material of at least one of the parts being a thermoset
• CPC Class Codes: B29C 66/8122 : characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
• CPC Class Codes: B29C 66/81264 : Mechanical properties, e.g. hardness
• CPC Class Codes: B29C 66/81457 : comprising a block or layer of deformable material, e.g. sponge, foam, rubber pressing elements supported or backed-up by resilient material B29C66/8161
• CPC Class Codes: B29C 66/83413 : cooperating rollers, cylinders or drums
• CPC Class Codes: B29C 66/83415 : the contact angle between said rollers, cylinders or drums and said parts to be joined being a non-zero angle B29C66/83433 takes precedence
• CPC Class Codes: B29C 66/929 : characterized by specific pressure, force, mechanical power or displacement values or ranges
• CPC Class Codes: B29C 66/934 : by controlling or regulating the speed
• CPC Class Codes: B29C 66/93411 : the parts to be joined having different speeds
• CPC Class Codes: B29C 66/93451 : by controlling or regulating the rotational speed, i.e. the speed of revolution
• CPC Class Codes: B29C 66/939 : characterised by specific speed values or ranges
• CPC Class Codes: B29K 2001/00 : Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
• CPC Class Codes: B29K 2001/12 : Cellulose acetate
• CPC Class Codes: B29K 2023/00 : Use of polyalkenes or derivatives thereof as moulding material
• CPC Class Codes: B29K 2023/06 : PE, i.e. polyethylene
• CPC Class Codes: B29K 2023/083 : EVA, i.e. ethylene vinyl acetate copolymer
• CPC Class Codes: B29K 2023/086 : EVOH, i.e. ethylene vinyl alcohol copolymer
• CPC Class Codes: B29K 2023/12 : PP, i.e. polypropylene
• CPC Class Codes: B29K 2023/16 : EPM, i.e. ethylene-propylene copolymers; EPDM, i.e. ethylene-propylene-diene copolymers; EPT, i.e. ethylene-propylene terpolymers
• CPC Class Codes: B29K 2023/38 : Polymers of cycloalkenes, e.g. norbornene or cyclopentene
• CPC Class Codes: B29K 2025/00 : Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
• CPC Class Codes: B29K 2025/06 : PS, i.e. polystyrene
• CPC Class Codes: B29K 2027/06 : PVC, i.e. polyvinylchloride
• CPC Class Codes: B29K 2027/08 : PVDC, i.e. polyvinylidene chloride
• CPC Class Codes: B29K 2029/04 : PVOH, i.e. polyvinyl alcohol B29K2031/04 takes precedence
• CPC Class Codes: B29K 2031/04 : Polymers of vinyl acetate, e.g. PVAc, i.e. polyvinyl acetate
• CPC Class Codes: B29K 2033/12 : Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate
• CPC Class Codes: B29K 2055/02 : ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
• CPC Class Codes: B29K 2059/00 : Use of polyacetals , e.g. POM, i.e. polyoxymethylene or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2063/00 : Use of EP, i.e. epoxy resins or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2067/00 : Use of polyesters or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2067/003 : PET, i.e. poylethylene terephthalate
• CPC Class Codes: B29K 2069/00 : Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2071/00 : Use of polyethers , e.g. PEEK, i.e. polyether-etherketone or PEK, i.e. polyetherketone or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2077/00 : Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2077/10 : Aromatic polyamides [polyaramides] or derivatives thereof
• CPC Class Codes: B29K 2079/08 : PI, i.e. polyimides or derivatives thereof
• CPC Class Codes: B29K 2081/04 : Polysulfides, e.g. PPS, i.e. polyphenylene sulfide or derivatives thereof
• CPC Class Codes: B29K 2081/06 : PSU, i.e. polysulfones; PES, i.e. polyethersulfones or derivatives thereof
• CPC Class Codes: B29K 2101/12 : Thermoplastic materials
• CPC Class Codes: B29K 2105/0085 : Copolymers
• CPC Class Codes: B29K 2105/0088 : Blends of polymers
• CPC Class Codes: B29K 2705/00 : Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
• CPC Class Codes: B29K 2821/00 : Use of unspecified rubbers as mould material
• CPC Class Codes: B29K 2905/12 : Iron
• CPC Class Codes: B29K 2995/0026 : Transparent
• CPC Class Codes: B29K 2995/0034 : Polarising
• CPC Class Codes: B29K 2995/005 : Oriented
• CPC Class Codes: B29K 2995/007 : Hardness
• CPC Class Codes: B29L 2009/00 : Layered products
• CPC Class Codes: B32B 2307/40 : having particular optical properties
• CPC Class Codes: B32B 2309/06 : Angles
• CPC Class Codes: B32B 27/30 : comprising vinyl (co)polymers; comprising acrylic (co)polymers
• CPC Class Codes: B32B 37/0015 : to avoid warp or curl
• CPC Class Codes: B32B 37/003 : to avoid air inclusion
• CPC Class Codes: B32B 37/0053 : Constructional details of laminating machines comprising rollers; Constructional features of the rollers
• CPC Class Codes: B32B 37/12 : characterised by using adhesives
• CPC Class Codes: B32B 37/206 : Laminating a continuous layer between two continuous plastic layers
• CPC Class Codes: Y10T 156/1741 : Progressive continuous bonding press [e.g., roll couples]

Abstract

A method for producing a multilayer laminated film comprising: laminating a resin film having a moisture percentage of 10% by weight to 60% by weight with a first transparent film and a second transparent film each having a moisture percentage of 0.5% by weight to 5% by weight to be bonded to both sides of the resin film through an adhesive or pressure-sensitive adhesive layer interposed therebetween; wherein the laminating comprising steps of: passing the resin film and the first transparent film between a pair of a first metal roll and a first elastic roll in such a manner that the first transparent film is placed on the first metal roll side so that they are bonded to each other under pressure to form a laminated film; and then, using the laminated film without winding up it and passing the laminated film and the second transparent film between a pair of a second metal roll and a second elastic roll in such a manner that the second transparent film is placed on the second metal roll side so that they are bonded to each other under pressure to form a multilayer laminated film. The method can prevent bubbles from being formed between the resin film and the transparent film.

Claims

1. A method for producing a multilayer laminated film comprising:

laminating a resin film having a moisture percentage of 10% by weight to 60% by weight with a first transparent film and a second transparent film each having a moisture percentage of 0.5% by weight to 5% by weight to be bonded to both sides of the resin film through an adhesive or pressure-sensitive adhesive layer interposed therebetween;

wherein the laminating comprising steps of;

passing the resin film and the first transparent film between a pair of a first metal roll and a first elastic roll in such a manner that the first transparent film is placed on the first metal roll side so that they are bonded to each other under pressure to form a laminated film; and

then,

using the laminated film without winding up it and passing the laminated film and the second transparent film between a pair of a second metal roll and a second elastic roll in such a manner that the second transparent film is placed on the second metal roll side so that they are bonded to each other under pressure to form a multilayer laminated film.

2. The method according to claim 1, wherein at least one of the first metal roll and the second metal roll is an iron roll or a stainless steel roll.

3. The method according to claim 1, wherein the first elastic roll and the second elastic roll each comprise a metallic core coated with a rubber layer or a resin layer.

4. The method according to claim 3, wherein the rubber or resin layer of each of the first elastic roll and the second elastic roll has a hardness of 70 to 100.

5. The method according to claim 1, wherein at least one of a lamination pressure between the first metal roll and the first elastic roll and a lamination pressure between the second metal roll and the second elastic roll is from 2 MPa to 5 MPa.

6. The method according to claim 1, wherein the moisture percentage of the resin film is more than 20% by weight to 40% by weight.