Abstract: An invention including a bottle container of a pinch-grip type of synthetic resin blow-molded product and which includes a body of a bottle container, and a grip including a pair of right and left deep-recessed grip portions, formed by concaving both side wall portions of the body of the bottle container, a rear wall portion of the body disposed at a position rearward from the deep-recessed grip portions in a front-back direction, wherein each grip portion includes a caved in recessed wall, vertical side walls positioned facing each other across the wall, and lateral walls disposed at upper and lower ends of the wall, so that surrounding walls as a whole is formed by vertical walls and lateral walls that surround the recessed wall, and wherein the vertical side walls have an angle of gradient which is set at a right angle relative to a transverse center line extending horizontally.

Abstract: Pinhole detection is achieved when pinholes happen to develop near stoppers used to fit a handle. A biaxially drawn synthetic resin bottle has a recessed portion, and a synthetic resin handle, fitted in an undercut engagement to the recessed portion by insert molding. The handle comprises upper and lower fitting arms disposed at a grip in a vertically long plate shape. Both arms extend forward from the grip. A stopper extends upward from a front end of the upper fitting arm, and a stopper extends upward and/or downward from a front end of the lower fitting arm. A ridge or groove is formed extending rearward of a stopper of either arm, along a top surface of the upper fitting arm or along a top surface and/or an underside surface of the lower fitting arm. A connecting passage for air release is formed along the ridge/groove.

Abstract: A biaxially-oriented polypropylene film for an ultra-thin capacitor that has superior heat resistance, withstand voltage performance and long-term durability. The film has a stereoregularity in which mesopentad fraction (mmmm) as determined by measurement of high temperature nuclear magnetic resonance (high temperature NMR) is between 94% and 98%, a weight average molecular weight (Mw) of 250,000 to 450,000, a molecular weight distribution (Mw/Mn) of 4 to 7, and on a molecular weight distribution curve, a difference determined by subtracting the differential distribution value when the logarithm of molecular weight Log(M)=6 from the differential distribution value when Log(M)=4.5 that is 9% to 15%. The film is fabricated using a polypropylene raw material resin in which the composition of the aforementioned molecular weight distribution has been adjusted by peroxidative decomposition treatment of a polypropylene resin.

Abstract: This invention is aimed at material saving and cost reduction. A technical problem to be solved by the invention is to provide a light-weight Y-shaped handle without impairing injection moldability and the functions of the handle. The principal means of solving the above-described technical problem is an injection molded handle used by being fitted and secured firmly to a rear portion of a body of a synthetic resin bottle by an insert molding method.

Abstract: Pinhole detection is achieved when pinholes happen to develop near stoppers used to fit a handle. A biaxially drawn synthetic resin bottle has a recessed portion, and a synthetic resin handle, fitted in an undercut engagement to the recessed portion by insert molding. The handle comprises upper and lower fitting arms disposed at a grip in a vertically long plate shape. Both arms extend forward from the grip. A stopper extends upward from a front end of the upper fitting arm, and a stopper extends upward and/or downward from a front end of the lower fitting arm. A ridge or groove is formed extending rearward of a stopper of either arm, along a top surface of the upper fitting arm or along a top surface and/or an underside surface of the lower fitting arm. A connecting passage for air release is formed along the ridge/groove.

Abstract: The present invention relates to a biaxially oriented polypropylene film containing: a polypropylene resin as a main component thereof, having a weight average molecular weight of 100,000 or more and 500,000 or less, the weight average molecular weight being determined by gel permeation chromatography, wherein at least one surface of the biaxially oriented polypropylene film has a protrusion volume of 2.0×104 ?m3 or more and 3.0×104 ?m3 or less, the protrusion volume being determined in an area of 560 ?m×745 ?m using a super-depth surface profile measurement microscope by determining an average plane of the surface based on distances between plural points on the surface and an irradiation source of the super-depth surface profile measurement microscope and measuring a volume of protrusions projecting from the average plane.

Abstract: This invention is aimed at material saving and cost reduction. A technical problem to be solved by the invention is to provide a light-weight Y-shaped handle without impairing injection moldability and the functions of the handle. The principal means of solving the above-described technical problem is an injection molded handle used by being fitted and secured firmly to a rear portion of a body of a synthetic resin bottle by an insert molding method.

Abstract: A biaxially drawn and blow-molded bottle made of synthetic resin with a handle, the handle is injection-molded, made of a synthetic resin and fitted firmly to the bottle, the bottle also has a recession with a projecting wall in a central part of the recession, and the handle has a pair of beams parallel to each other and on opposite sides of the projecting wall and a grip plate integrally connected between the pair of beams, the beams also have embedded ridges disposed centrally along an axis of each beam wherein the embedded ridges extend from the pair of beams to engage the recession and the projecting wall, and the embedded ridges each have a central plane approximately perpendicular to the axis of the beam on which the embedded ridges are disposed and the embedded ridges become wider along the plane as they extend away from the beams.

Abstract: The present invention relates to a biaxially oriented polypropylene film containing: a polypropylene resin as a main component thereof, having a weight average molecular weight of 100,000 or more and 500,000 or less, the weight average molecular weight being determined by gel permeation chromatography, wherein at least one surface of the biaxially oriented polypropylene film has a protrusion volume of 2.0×104 ?m3 or more and 3.0×104 ?m3 or less, the protrusion volume being determined in an area of 560 ?m×745 ?m using a super-depth surface profile measurement microscope by determining an average plane of the surface based on distances between plural points on the surface and an irradiation source of the super-depth surface profile measurement microscope and measuring a volume of protrusions projecting from the average plane.

Abstract: A synthetic resin bottle has a grip assembled and fixed in an upright orientation to the center part of a concave region at the ear portion of a substantially cylindrical trunk portion of the bottle main body. A shoulder portion in the bottle main body has a lower circumferential wall with a truncated pyramid shape defined by a plurality of panels. A right/left center axis of a rear surface panel is placed at substantially at the center of the rear surface of the bottle main body. A center portion of each of the panels is formed as a protrusion having a convex shape gradually bulging outwards of the bottle main body.

Abstract: A synthetic resin bottle with a handle of this invention comprises a biaxially drawn and blow-molded PET bottle and a handle, an injection-molded product of the same PET resin, which is fitted firmly to the bottle as an insert. The up-and-down property of the surfaces of the handle inserts, which come in contact with the PET bottle, is adjusted in response to the softening and drawing state of the PET preform that is deformed and molded into the bottle. This adjustment causes the friction resistance to be reduced between the handle inserts and the blow-molded PET bottle. The finely textured up-and-down pattern can be easily formed through the tests and adjustments by the surface treatment inside the mold cavity used for the injection molding of the handle. Thus, the optimum surface properties can be obtained in response to the bottle sizes and the handle shapes. Therefore, this invention requires no separate process, such as thermal crystallization.

Abstract: A bottom structure of a biaxially-oriented blow-molded bottle-shaped container is made of a synthetic resin and includes a neck, a shoulder, a body and a bottom. The bottom has a connecting cylindrical wall, a tapered-cylindrical wall, a bottom wall and a grounding wall. A diameter of the tapered-cylindrical wall is decreased downwardly at a certain inclined angle. The bottom wall is domed to an inside of the container. The grounding wall is in a ring plate shape and arranged between a lower edge of the tapered-cylindrical wall and a lower edge of the bottom wall. Each of groove ribs is formed from an upper edge of the tapered-cylindrical wall through the grounding wall to the lower edge of the bottom wall. The groove ribs are arranged with isometric center angle, and extend radially.

Abstract: This invention is aimed at providing a biaxially drawn, blow-molded PET bottle with a handle, which bottle is highly safe and easy to handle, even in the case of large-size bottles with a capacity as large as a few liters. This can be achieved by improving the insert moldability of the handle and by increasing the strength of fitting of the handle to the bottle. Such a bottle with a handle comprises a polyethylene terephthalate resin bottle and a handle, an injection-molded product made of a synthetic resin, which is fitted firmly to the bottle as an insert. This bottle has a recession that has been caved in at the rear of body and also comprises a vertical projecting wall disposed in the central part of the bottom of this recession. The handle comprises a pair of fitting beams disposed in parallel to each other in the standing position and a grip plate integrally disposed to connect between the pair of fitting beams at both the upper and lower ends thereof.

Abstract: A synthetic resin bottle has a grip assembled and fixed in an upright orientation to the center part of a concave region at the ear portion of a substantially cylindrical trunk portion of the bottle main body. A shoulder portion in the bottle main body has a lower circumferential wall with a truncated pyramid shape defined by a plurality of panels. A right/left center axis of a rear surface panel is placed at substantially at the center of the rear surface of the bottle main body. A center portion of each of the panels is formed as a protrusion having a convex shape gradually bulging outwards of the bottle main body.

Abstract: A synthetic resin bottle with a handle of this invention comprises a biaxially drawn and blow-molded PET bottle and a handle, an injection-molded product of the same PET resin, which is fitted firmly to the bottle as an insert. The up-and-down property of the surfaces of the handle inserts, which come in contact with the PET bottle, is adjusted in response to the softening and drawing state of the PET preform that is deformed and molded into the bottle. This adjustment causes the friction resistance to be reduced between the handle inserts and the blow-molded PET bottle. The finely textured up-and-down pattern can be easily formed through the tests and adjustments by the surface treatment inside the mold cavity used for the injection molding of the handle. Thus, the optimum surface properties can be obtained in response to the bottle sizes and the handle shapes. Therefore, this invention requires no separate process, such as thermal crystallization.

Abstract: A bottom structure of a biaxially-oriented blow-molded bottle-shaped container made of a synthetic resin, comprising a neck, a shoulder, a body and a bottom, characterized in that