摘要:
This invention relates to the laminated material for food packaging, and its manufacturing process. The laminated material (10) consists of the quality keeping intermediate layer (12) laminated inside the paper core layer (11) and the core layer and the heat sealable innermost layer (13). The quality keeping intermediate layer comprises of an extrusion coatable blend polymer consisting of polymer component A 50-95% of nylon-MXD6 or EVOH and, polymer component B 5-50% of nylon 6, nylon 6, the blends or PET. The quality keeping intermediate layer is extruded and laminated directly in the core layer, the innermost layer contains at least the linear low density polyethylene which has a narrow molecular weight distribution, and has the properties parameter of mean density of 0.910-0.925, 100-122 degrees C. peak melting point, melt flow index of 5-20, swelling ratio (SR) of 1.4-1.6, and 5-50 micrometer layer thickness.The hardness, production efficiency, and cost performance of the barrier packaging container formed by the packaging material are improved.
摘要:
The present invention is drawn to a strip tape which does not undergo lowering of bonding force and which does not cause pollution of the natural environment, working environment, etc. The strip tape includes a center layer containing a polar resin, and at least one polyolefin layer laminated, via a bonding layer, on each face of the center layer. The bonding layer contains an ethylene-methacrylic acid-alkyl acrylate random copolymer. Since the strip tape includes a center layer and at least one polyolefin layer, the interlayer bonding force of the strip tape is high, the bonding strength between the center layer and the polyolefin layer can be increased, and the waterproofing property of the strip tape can be enhanced. Even when a packaging container including the strip tape is heated or cooled sharply during use, the interlayer bonding force of the strip tape is not lowered.
摘要:
A paper packaging container is formed from the packaging material comprising constitution layers of at least an outside thermoplastic material layer, a paper substrate layer, and an inside thermoplastic material layer, wherein the inside thermoplastic material layer contains at least a linear low density polyethylene, and has properties parameters of an average density of 0.900–0.930, a predetermined peak melting point, a melt flow index of 5–15, and a swelling ratio of 1.3–1.8. The use of the packaging material allows easy filling and packaging to the packaging container and quick heat sealing, and results in more toughly and strongly sealed container, and the material can be used for achieved good sealing independently of the temperature of food contents and thus maintaining the non-scalping and quality preservability of the content product.
摘要:
In the manufacture of a paper container from packaging materials, damage of internal layers of packaging materials is promptly inspected, and degradation by light exposure of content can be prevented. A method of manufacturing light barrier paper packaging materials for liquid food formed from a laminate having a paper layer, a thermoplastic resin outside layer, and a thermoplastic resin inside layer include preparing a substantially completely bleached white bleached paper layer, providing a light barrier layer of light barrier material on the inside of the bleached paper layer before or during lamination of the thermoplastic resin inside layer, and inspecting for defects of the obtained laminate by observation of the visible or invisible inside surface of the bleached paper layer from the thermoplastic resin inside layer side of the obtained laminate through the light barrier layer.
摘要:
A process for producing a barrier packaging material reduces the number of processes, simplifies each of the processes per se, is relatively thin even though a multilayer, reduces the number of adhesive layers, and is advantageous in cost and environment. The process involves providing a 20 μm to 45 μm thick biaxially oriented film having ethylene-vinyl alcohol copolymer layers, polyamide layers directly bonded to both surfaces of the ethylene-vinyl alcohol copolymer layers and heat-adhesive polyethylene layers laminated via adherent resin layers at each external surface of the polyamide layers, subjecting to corona discharge treatment on the surfaces to be joined by poly(ethylene terephthalate) films of 5 μm to 15 μm thickness and the biaxially oriented film, and after the above-described treatment, performing thermocompression bonding of the treated surface to be joined by the poly(ethylene terephthalate) films and the biaxially oriented film, by means of nip rolls.
摘要:
In manufacture of the paper container from the packaging materials, the damage of internal layer of packaging materials is promptly inspected, and degradation by light exposure of content can be prevented. Method of manufacturing light barrier paper packaging materials for liquid food formed from a laminate having a paper layer, a thermoplastic resin outside layer and a thermoplastic resin inside layer comprising a step of preparing substantially complete bleached white bleached paper layer of weight of 50-350 g/m2, a step of providing light barrier layer of light barrier material in the inside of the bleach paper layer before or during the lamination of the inside thermoplastic resin layer, a step of inspecting defect of the obtained laminate by observation of the visible or invisible inside-surface of the bleach layer from the inside thermoplastic resin layer side of the obtained laminate through the light barrier layer.
摘要翻译:在从包装材料制造纸容器时,迅速检查包装材料内层的损坏,并且可以防止内容物暴露的劣化。 制造由具有纸层,热塑性树脂外层和热塑性树脂内层的层叠体形成的液体食品用遮光纸包装材料的方法,包括制备重量为50-350克的基本上完全漂白的白色漂白纸层的步骤 / m 2,在层压内部热塑性树脂层之前或期间,在漂白纸层的内部设置遮光材料的遮光层的步骤,通过观察所得到的层叠体的缺陷来检查所述层叠体的缺陷的步骤 通过光阻挡层从所得层压体的内部热塑性树脂层侧观察或看不见的漂白层内表面。
摘要:
To provide a laminated packaging material wherein a plant-origin material is used as the main material constituting a laminated paper packaging material for foods; a laminated packaging material being excellent in oxygen-barrier performance; a method of producing a barrier laminated packaging material in a small number of steps; a method of producing a barrier laminated packaging material whereby the structure of the laminate can be simplified without a need for a petroleum-derived adhesive and the laminate thickness can be reduced; and a method of producing a barrier laminated packaging material which is free from the occurrence of defects such as pinholes in spite of having a thin barrier layer.[Means for Solving Problems] A laminated packaging material for foods which is a laminated packaging material comprising a paper core layer, a barrier layer and a thermoplastic resin layer, wherein the barrier layer is made of polyvinyl alcohol, while the thermoplastic resin layer is made of a resin composition containing a plant-origin plastic and having melt extrudability.
摘要:
A pellet to be used in a multi-layer laminate for storing liquid foods, comprising a hydrophilic reducing organic compound and a hydrophilic and water insoluble thermoplastic resin, wherein the hydrophilic reducing organic compound is kneaded with the hydrophilic and water insoluble thermoplastic resin. The kneaded compound comprised of the hydrophilic reducing organic compound and the hydrophilic and water insoluble thermoplastic resin is then kneaded with a hydrophobic thermoplastic resin and formed into a pellet. The pellet is such that 50 grams of the pellet when stored at 15° C. for one week in a sealed 180 ml container requires the presence of water in order to absorb oxygen.