Multilayer film, method for producing same, and aqueous dispersion used for production of same

A water-based dispersion, laminated film technology, applied in other household appliances, chemical instruments and methods, coatings, etc., can solve the problems of easy adhesion, poor solvent resistance, poor resistance to contents, etc., and achieve excellent resistance to contents, The effect of excellent solvent resistance and sufficient lamination strength

Active Publication Date: 2015-04-15
UNITIKA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesives described in these documents are to laminate the object immediately after coating on the base film, so if two base films coated with the adhesive are contacted with the coated surface and the non-coated surface, Overlapping methods are prone to adhesion
Therefore, it is not possible to manufacture films coated with this adhesive inline
In addition, the resin layer formed by the adhesive sometimes has poor solvent resistance, and when a laminated film obtained by extruding an olefin-based resin on the resin layer is used for packaging, there may be a problem that the content resistance is poor.

Method used

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  • Multilayer film, method for producing same, and aqueous dispersion used for production of same

Examples

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Embodiment

[0094] Next, the present invention will be specifically described based on examples. The raw materials used and the preparation method of the aqueous dispersion of the acid-modified polyolefin resin are as follows.

[0095] (A) Acid-modified polyolefin resin:

[0096] (A-1) BONDINE HX-8290 (ethylene / ethyl acrylate / maleic anhydride=80 / 18 / 2 (mass %), MFR: 65 g / 10 min, melting point: 81° C., manufactured by ARKEMA Corporation

[0097] (A-2) BONDINE TX-8030 manufactured by Arkema Corporation (ethylene / ethyl acrylate / maleic anhydride=85 / 12 / 3 (mass %), MFR: 3 g / 10 minutes, melting point: 95° C.)

[0098] (A-3) BONDINE HX-8140 manufactured by Arkema Corporation (ethylene / ethyl acrylate / maleic anhydride=78 / 19 / 3 (mass%), MFR: 20 g / 10 minutes, melting point: 80° C.)

[0099] (A-4) BONDINE HX-8210 manufactured by Arkema Corporation (ethylene / ethyl acrylate / maleic anhydride=90 / 7 / 3 (mass %), MFR: 200 g / 10 minutes, melting point: 100° C.)

[0100] (B) Polyurethane resin:

[0101] (B-1) ...

reference example 1

[0116] (Preparation of acid-modified polyolefin aqueous dispersion (E-1))

[0117] 60.0 g of acid-modified polyolefin resin (A-1) and 90.0 g of isopropanol (manufactured by Wako Pure Chemical Industries, Ltd., below It may be abbreviated as IPA), 3.0 g of N,N-dimethylethanolamine (manufactured by Wako Pure Chemical Industries, Ltd., hereinafter may be abbreviated as DMEA) and 147.0 g of distilled water were put into a glass container. Then, the rotation speed of the stirring blade was set to 300 rpm, and the temperature in the system was kept at 140 to 145° C., followed by stirring for 30 minutes. Thereafter, it was placed on a water bath, and cooled to room temperature (about 25° C.) while stirring while maintaining a rotational speed of 300 rpm, to prepare an acid-modified polyolefin resin aqueous dispersion. Further, the acid-modified polyolefin resin aqueous dispersion and 180 g of distilled water were put into a double-necked round-bottomed flask, a mechanical stirrer an...

reference example 2

[0119] (Preparation of acid-modified polyolefin aqueous dispersion (E-2))

[0120] Except using acid-modified polyolefin resin (A-2) instead of acid-modified polyolefin resin (A-1), carry out the same operation as Reference Example 1 to obtain acid-modified polyolefin resin (A-2 ) aqueous dispersion (E-2).

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Abstract

A multilayer film that is obtained by forming a resin layer, which contains (A) an acid-modified polyolefin resin, (B) a polyurethane resin, (C) a crosslinking agent and (D) an acetylene glycol surfactant, on at least one surface of a biaxially stretched film. This multilayer film is characterized in that: the crosslinking agent (C) contains (C1) a melamine-based crosslinking agent and / or (C2) an oxazoline-based crosslinking agent; the mass ratio of component (A) to component (B) ((A) / (B)) is from 60 / 40 to 97 / 3; the total amount of component (C1) and component (C2) or respective amounts of component (C1) and component (C2) are 1-20 parts by mass per 100 parts by mass of the total amount of component (A) and component (B); and the amount of component (D) is 5-50 parts by mass per 100 parts by mass of the total amount of component (A) and component (B).

Description

technical field [0001] The present invention relates to a laminated film in which a resin layer containing an acid-modified polyolefin resin, a polyurethane resin, a crosslinking agent, and an acetylene glycol-based surfactant is formed on at least one side of a biaxially stretched film. Background technique [0002] Polyamide biaxially stretched film represented by polycaproamide (nylon 6, N6) film, polyester biaxially stretched film represented by polyethylene terephthalate (PET) film because of its excellent Mechanical properties, heat resistance, pinhole resistance, and chemical resistance are used in a wide range of applications. [0003] For example, when these biaxially stretched films are used for packaging, heat-sealable resins such as polyethylene (PE), polypropylene (PP), and ethylene-vinyl acetate copolymer (EVA) are laminated on the biaxially stretched film in many cases. One or both sides of the film are stretched and heat sealed to form various packaging form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B05D7/04B05D7/24B32B27/00B32B27/18B32B27/40C08J7/04C08K5/053C08K5/3492C08K5/353C08L23/26C08L75/04C09J175/04C08J7/043
CPCC08J7/042C08L23/26C08J7/04C08J7/047B32B27/00C09J175/04C08L51/06C08K5/053B32B27/18C08K5/34922C08L75/04C08K5/353B32B27/40B32B27/32C08K5/3492B32B27/36B32B2255/10B32B2255/26B32B2307/516B32B2307/518C09D123/0869C08J2367/02C08J2377/00C08J2423/08C08J2475/04C08L23/0869Y10T428/31551Y10T428/31573C09D123/26C08J7/0427C08J7/043B32B27/34B32B2250/02B32B2250/24B32B2307/306B32B2457/12B32B2581/00B32B27/08
Inventor 中原纯一
Owner UNITIKA LTD
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