摘要:
The purpose of the present invention is to provide: a packaging container that can be industrially mass-produced, that can be used as Modified Atmosphere Packaging (MAP) while ensuring sealing performance, and that allows contents to be displayed in a three-dimensional manner; a packaged product contained in the packaging container; and a manufacturing method and manufacturing apparatus for the packaging container. This packaging container has: a container main body having a bottom face part and sidewall parts, and having a flange at the upper end part periphery of the sidewall parts; and a lid material heat-sealed to the flange. The lid material is made of a film or sheet. A pair of opposing sidewall parts has the same shape, and upper end parts of the pair of side wall parts are at least positioned higher than the upper end parts of another pair of opposing sidewall parts.
摘要:
A foil made of two plastic films and an adhesive layer laminating the two films together, wherein the first plastic film has a first side and a second side and comprises punctures therebetween. The foil is of a dual peel-seal type such that the first plastic film realizes a first peel-able seal within the foil at its first side in the form of an adhesion peel seal in an open state and/or in the form of a cohesion peel seal in a sealed state, and wherein the adhesive layer leaves open the punctures such that gas can penetrate through the punctures in-between the two films towards the first peel-able seal.
摘要:
A packaging container for cooking by an electronic oven having high sealability between a container body and a cover member and capable of being automatically and securely opened starting at a steam releasing seal part after taste of contents is improved by a steaming effect by holding a pressure in the packaging container for a specified time when the contents are heated and cooked by the electronic oven. The packaging container comprises a synthetic resin container body having a flange part and the cover member heat-sealed to the flange part of the container body. The cover member comprises (1) an upper member in which inner surfaces of resin films are positioned opposite to each other to form an abutted part, an unsealed part communicating with the inside of the container body is formed by heat-sealing a peripheral edge part of the abutted part excluding one side of the abutted part forming a base part, and the steam releasing seal part is formed at the abutted part and (2) a lower member which covers a lower surface of the upper member and in which a steam guide part communicating with the inside of the container body is formed at or near the base part of the abutted part.
摘要:
A pressure release safety cap comprising a pressure release safety cap body having an open end and a closed end, the closed end having located thereupon a frangible groove and a hinge groove.
摘要:
An inverting, rupturable, pressure relieving apparatus includes a structure having a wall for containing pressurized fluid and an asymmetrical indentation in the wall. The indentation has a base connecting the indentation to the wall, a protuberant side for contacting the pressurized fluid, a recessed side opposite the protuberant side, and an axis about perpendicular to the base and extending through the center of the indentation at the base. The asymmetry of the indentation creates an inversion initiation face in the indentation having a smaller angle with the base and less resistance to inversion than the remainder of the indentation.
摘要:
Tamper-evident closure apparatus for internally pressurized containers includes a closure provided with a mechanism for venting the internal pressurized gas upon initial unsealing of the container and a tamper-indicating device adapted to be acted upon by the vented gas to indicate that an initial unsealing of the container has occurred. The tamper-indicating device may be, for example, chemically activated to change colors when acted upon by the vented gas or may be mechanically activated so that venting of the pressurized gas causes a visibly apparent disruption, distortion or the like to indicate initial unsealing of the container.
摘要:
A bottle closure of flexible thermoset synthetic material has a corrugated annular insert and an outer wall depending from its base. A thinned portion in the base is of a thickness and geometry adapted to burst at a predetermined pressure within the bottle. An annular shoulder on a severable skirt extends laterally beyond the outer wall which fits against the end of a plunger for urging an internal annular bevel groove in the skirt over an external annular bead near the mouth of the bottle.