摘要:
In a method for producing ice cube bags or similar bags two or more layers of plastic foil superimposed on each other are supplied from a plastic foil stock and are joined with at least one web of high temperature resistant material such as teflon to form a sandwich of the web of high temperature resistant material and the plastic foils. The sandwich is conveyed to a stamping or welding station in which it is subjected to a stamping or welding operation by applying pressure and heat to the exterior surface of the web of high temperature resistant material in specific areas corresponding to the intended stamped or welded areas of the finished ice cube bag, the web of high temperature resistant material serving as a pressure and temperature transmitting web, and the application of pressure and heat causing an at least partial melting of the mutually opposite surfaces of the plastic foils in the specific areas and causing the web to be pressed down into and adhere to the plastic foils in these areas. The sandwich is then conveyed from the stamping and welding station, keeping the web of high temperature resistant material adhered to the plastic foils for supporting the softened and at least partially melted plastic foils in order to prevent the plastic foils from being stretched during the conveyance, and the adhered web of high temperature resistant material is then stripped off the plastic foils after cooling the plastic foils to a sufficiently low temperature to prevent them from being deformed during conveyance.
摘要:
A freezing mould bag (10) comprises two sheets (12, 14) which are joined together in substantially overlapping relationship along the periphery of the sheets, defining a plurality of mould compartments (24) within the interior of the freezing mould bag. An inlet channel defined by joints (28, 30, 32) extends from the mould compartments (24) to an inlet opening (26). Two closure valve flaps (16, 18) are connected to the sheets (12, 14) at the inlet opening (26) and extend from the inlet opening within the inlet channel. The inlet channel comprises a first and a second segment, which first segment is of a configuration tapering from the inlet opening (26) towards the mould compartments, and which second segment has dimensions so as to to no substantial extent hinder liquid or water from flowing through the second segment. At the transition between the first and the second segment of the inlet channel, a constriction is defined, serving the purpose of generating a venturi effect for generating a relative pressure drop within the constriction for closing the inlet channel at the constriction as liquid or water is flowing from the second segment of the inlet channel through the constriction towards the first segment.
摘要:
A freezing mould bag (10) comprises two sheets (12, 14) which are joined together in substantially overlapping relationship along the periphery of the sheets, defining a plurality of mould compartments (24) within the interior of the freezing mould bag. An inlet channel defined by joints (28, 30, 32) extends from the mould compartments (24) to an inlet opening (26). Two closure valve flaps (16, 18) are connected to the sheets (12, 14) at the inlet opening (26) and extend from the inlet opening within the inlet channel. The inlet channel comprises a first and a second segment, which first segment is of a configuration tapering from the inlet opening (26) towards the mould compartments, and which second segment has dimensions so as to to no substantial extent hinder liquid or water from flowing through the second segment. At the transition between the first and the second segment of the inlet channel, a constriction is defined, serving the purpose of generating a venturi effect for generating a relative pressure drop within the constriction for closing the inlet channel at the constriction as liquid or water is flowing from the second segment of the inlet channel through the constriction towards the first segment.
摘要:
In a method for producing ice cube bags or similar bags two or more layers of plastic foil superimposed on each other are supplied from a plastic foil stock and are joined with at least one web of high temperature resistant material such as teflon to form a sandwich of the web of high temperature resistant material and the plastic foils. The sandwich is conveyed to a stamping or welding station in which it is subjected to a stamping or welding operation by applying pressure and heat to the exterior surface of the web of high temperature resistant material in specific areas corresponding to the intended stamped or welded areas of the finished ice cube bag, the web of high temperature resistant material serving as a pressure and temperature transmitting web, and the application of pressure and heat causing an at least partial melting of the mutually opposite surfaces of the plastic foils in the specific areas and causing the web to be pressed down into and adhere to the plastic foils in these areas. The sandwich is then conveyed from the stamping and welding station, keeping the web of high temperature resistant material adhered to the plastic foils for supporting the softened and at least partially melted plastic foils in order to prevent the plastic foils from being stretched during the conveyance, and the adhered web of high temperature resistant material is then stripped off the plastic foils after cooling the plastic foils to a sufficiently low temperature to prevent them from being deformed during conveyance.
摘要:
A freezing mould bag (10) comprises two sheets (12, 14) which are joined together in substantially overlapping relationship along the periphery of the sheets, defining a plurality of mould compartments (24) within the interior of the freezing mould bag. An inlet channel defined by joints (28, 30, 32) extends from the mould compartments (24) to an inlet opening (26). Two closure valve flaps (16, 18) are connected to the sheets (12, 14) at the inlet opening (26) and extend from the inlet opening within the inlet channel. The inlet channel comprises a first and a second segment, which first segment is of a configuration tapering from the inlet opening (26) towards the mould compartments, and which second segment has dimensions so as to to no substantial extent hinder liquid or water from flowing through the second segment. At the transition between the first and the second segment of the inlet channel, a constriction is defined, serving the purpose of generating a venturi effect for generating a relative pressure drop within the constriction for closing the inlet channel at the constriction as liquid or water is flowing from the second segment of the inlet channel through the constriction towards the first segment.