摘要:
A roll of flattened tubular synthetic plastic stock is unwound by the pulling force of clamping devices mounted on a vertically movable frame and engaging the opposite faces of still flattened portions of the tubular stock. The unwound flattened tubular stock is preferably advanced downwardly between bag slitting, wall separating and bag sealing devices also carried by the framework. A lower pair of clamping members forms a temporary seal along the entire width of the tubular stock at a point adjacent to but above the bottom margin of a bag-forming portion thereof until a permanent seal is formed beneath the same and above another pair of lower clamping members which engage the upper margin of a previously filled bag-forming portion of the same. A lower slitting device slits the bag between the latter pairs of clamping members while the clamping members are in operative position. The framework is moved bodily between an uppermost position where a spout-receiving slit is formed by an upper slitting device in portions of the tubular stock to constitute or to be located adjacent to the upper margin of a bag to be formed therein, and the confronting walls of the portion of the tubular stock at and below the slit are separated preferably by engagement therewith by a pair of spaced pointed projections which bite into the bag and are then moved apart to separate the walls. One or more spouts carried by the framework are then passed downwardly through the slit as the framework, with all the other devices carried thereby, is moved bodily downwardly to a bottommost position while the sealed interior of the bag-forming portion of the tubular stock is filled. A permanent bottom seal is formed and the lower clamping members are released to free the previously filled bag-forming portion of the stock which drops by force of gravity onto a receiving platform or the like. Bags of different length are formed by merely varying the distance between the uppermost and bottommost positions of the framework.
摘要:
PARALLEL OPPOSED SHEETS ARE BONDED TOGETHER IN A USHAPED SEAL TO FORM A POCKET. THE POCKET IS INFLATED BY A CONTROLLED AMOUNT, THEN SEALED OFF BY FORMING A NEW POCKET WHEREIN THE BOTTOM OF THE SECOND U-SHAPED SEAL OVERLAPS THE ENDS OF THE FIRST U-SHAPED SEAL. THE SEALED INFLATED POCKET MAY BE FURTHER SUB-DIVIDED INTO SMALLER INFLATED POCKETS BY FURTHER SEALING.
摘要:
An exemplary air cushion inflation machine includes: a first terminal connected to a direct current input; a second terminal; a reference resistor powered by the direct current input; an op-amp; and a transistor. The first terminal of the op-amp is connected to a variable voltage source and the second terminal of the op-amp is connected to the reference resistor. The transistor has a base connected to an output of the op-amp, an emitter connected to the reference resistor, and a collector connected to a first terminal of a sealing band apparatus having first and second terminals. A meltable material placed between the first and second terminals is melted by resistance of current flowing between the first and second terminals. The variable voltage source changes voltage based on a voltage drop measured across the first and second terminals by a voltage measurement device and the constant current.
摘要:
Blow unit for an apparatus (1) for making air-filled bags from a film material (F) having chambers (12), wherein the blow unit (8) comprises a body (26) having an outlet opening (28) for introducing air into the chambers, wherein the blow unit comprises a guiding element (30) for guiding the film material towards the outlet opening, wherein the blow unit (8) comprises an air guiding space (32) that extends from the outlet opening (28) over a distance (D) at least partly along the guiding element, wherein a length (L) of the air guiding space (32) is such that in use, during introducing air into the film material (F), the air guiding space enables introduction of air into two adjacent chambers (12a, 12b) at the same time. The invention further relates to an apparatus comprising such a blow unit, a system comprising such an apparatus and a method for making air-filled bags.
摘要:
The invention relates to a method for producing at least two-layer components and correspondingly produced components per se as absorptive lining in the interior and/or boot or for floor coverings of motor vehicles, comprising a top material and an absorber.
摘要:
Disclosed is a protective cover for an electronic device that is made from an elastomeric material that simultaneously provides cushioning that would otherwise be provided by a softer, thicker material, while utilizing a single, denser material that provides a slim profile and has sufficient density to conform well to the electronic device and prevent the transmission of impacts with hard surfaces directly to the electronic device. Although a denser material is used for the protective cover, recesses are formed in thicker portions at impact points that create compressible ribs. The ribs provide softer, cushioned portions of the cover in the impact areas, which are capable of absorbing the shock and energy of impacts.
摘要:
A molding apparatus for making a continuous molded article or continuous series of molded articles generally includes a pair of spaced-apart molding assemblies, which cooperatively generate a movable mold having a dynamic mold-cavity therein, each of the molding assemblies including a series of movable mold segments, which are adapted to fit together to form a portion of the dynamic mold-cavity, a drive mechanism for conveying the mold segments along a path, and a dispenser for dispensing a moldable, expandable material into the dynamic mold-cavity.
摘要:
Disclosed herein is a foam-in-bag dispensing system, including a dispensing apparatus operative to dispense foam precursor, the foam precursor being configured for expanding and solidifying into a polymeric foam, to a dispensing location between first and second web plies extending respectively on first and second sides of the dispensing apparatus; and a bag-status indicator associated for providing an indication to the operator indicative of the readiness of the bag for removal from the device for avoiding premature bag removal.