To provide an in-mold molded article having dramatically superior mechanical strength of the in-mold molded body, and to provide a polypropylene sheet having excellent rigidity and strength despite being a thick film. Provided is an in-mold molded article obtained by integrally forming a resin sheet and an injection molding resin, wherein a base material sheet layer (X) of the molded article derived from the resin sheet is a crystalline resin having a thickness of 60 μm or more, a crystallinity by x-ray diffraction when the molded article is cut and x-rays irradiated from the cut surface of 70% or more, and a ratio of the maximum value or the minimum value to the average thickness (μm) of the sheet layer (X) in the cut surface of within ±10%.
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
A polypropylene multilayer sheet comprising: a first biaxially oriented polypropylene layer having a melting point Tmh; and a second biaxially oriented polypropylene layer having a melting point Tml, the first biaxially oriented polypropylene layer and the second biaxially oriented polypropylene layer being alternately laminated, the polypropylene multilayer sheet having a thickness of 0.20 to 3.0 mm, wherein
Tmh>Tml, and
a total number of layers is 3 to 11.
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
The present invention can provide a laminated sheet which exhibits excellent rigidity as a member that can be applied to a large-sized molded article, which exhibits excellent uniformity of in-plane rigidity particularly when the laminated sheet has a large area, and which has less unevenness of physical properties. A laminated sheet according to the present invention has a structure in which a layers that are each made of a biaxially oriented polypropylene film and b layers that are each made of an olefin-based resin having a melting point of 110-160°C are alternately laminated. When the direction of one side of the laminated sheet is regarded as an x direction and the direction orthogonal to this direction is regarded as a y direction, the tensile elastic moduli in the x direction and the y direction at three positions which include the central position in the y direction and two positions that are each located at a distance of 200 mm from the central position in the y direction passing through the central position are each within the range of 2000-5000 MPa.
B29C 43/14 - Compression moulding, i.e. applying external pressure to flow the moulding materialApparatus therefor of articles of definite length, i.e. discrete articles in several steps
B29C 43/30 - Making multilayered or multicoloured articles
B32B 37/10 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using direct action of vacuum or fluid pressure
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
Provided is a polypropylene multi-layer sheet in which a first biaxially stretched polypropylene layer having a melting point Tmh and a second biaxially stretched polypropylene layer having a melting point Tml are laminated in an alternating manner, and which has a thickness of 0.20-3.0 mm, wherein Tmh>Tml and the total number of layers is 3-11.
B65D 1/00 - Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
A multilayered polypropylene sheet with a thickness of 0.30-3.0 mm which comprises one or more biaxially stretched polypropylene layers F having a melting point TmF and, alternately superposed therewith, one or more biaxially stretched polypropylene layers N having a melting point TmN, wherein TmF>TmN, the total number of layers is 3-11, the layers F have been formed from a resin composition comprising a polypropylene-based resin as component (A) and an inorganic filler as component (B), the weight ratio of [component (B)]/[component (A) + component (B)] being 0.5-60 wt%, and the layers N have been formed from a resin composition comprising a polypropylene-based resin as component (a) and optionally containing the component (B), the weight ratio of [component (B)]/[component (a) + component (B)] being 0-10 wt%.
B65D 1/00 - Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
A container body (20) includes an upper opening portion (21) having a container internal sidewall portion (22) and a container side skirt portion (24). A lid (10) includes a lid internal sidewall portion (12) and a lid side skirt portion (14). Two or more ledge portions (15) protruding inward are formed on the lid side skirt portion (14). The container side skirt portion (24) includes a first guide portion (30) for guiding downward the ledge portions (15) when the lid (10) is attached. When the lid is closed, the lid (10) is drawn into the side of the container body (20). Thus, a seal portion formed between the container internal sidewall portion (22) and the lid internal sidewall portion (12) is press-contacted, in the state of which the seal portion secures high sealability. Further, the length of the lid side skirt portion (14) is increased so as to cover the lower end of the container side skirt portion (24) with a lower portion of the lid side skirt portion (14) when the lid is attached or detached, whereby the fingertips can be prevented from being scratched.
A container main body (20) is provided with an upper opening portion (21) comprising a container inner wall portion (22) and a container side skirt portion (24). A lid body (10) is provided with a lid inner wall portion (12) and a lid body side skirt portion (14), and the lid body side skirt portion (14) is formed with two or more projections (15) projecting to the inside. The container side skirt portion (24) is formed with a first guide surface (30) which guides the projections (15) downward when the lid body (10) is attached, and when the lid is attached, the lid body (10) is drawn to the side of the container main body (20). Thereby, a sealing portion formed between the container inner wall portion (22) and the lid inner wall portion (12) is press-fitted to ensure a high sealing property. Further, by making the length of the lid body side skirt portion (14) longer so that when attaching/removing the lid, the lower end of the container side skirt portion (24) is covered by the lower portion of the lid body side skirt portion (14), an injury to the tip of a finger can be prevented.
Provided is a container with a lid, capable of providing a high sealing efficiency when the lid is closed. An upper opening (21) of a container body (20) is provided with a container inner side wall portion (22) and a container side skirt portion (24) which extends downward from an upper end of the container inner side wall portion (22). The lid (10) is provided with a lid inner side wall portion (12) and a lid side skirt portion (14) which extends downward from an upper end of the lid inner side wall portion (12). The lid side skirt portion (14) is provided with two or more projections (15) which project inwardly. When the lid is closed, a sealed portion which is liquid-tight in the entire circumference direction is formed between the container inner side wall portion (22) and the lid inner side wall portion (12). First guide surfaces (30) are formed on the container side skirt portion (24) to guide the projections (15) in the downward direction when the lid (10) is attached. When the lid is closed, the projections (15) are caused to move downwardly, and consequently, the lid (10) is caused to move toward the container body (20). Thus, the sealed portion formed between the container inner side wall portion (22) and the lid inner side wall portion (12) is brought into a press-contact state to provide a high sealing efficiency.
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