摘要:
The shear bonding method is configured to facilitate bonding of structures in an out-of-autoclave environment. The shear bonding method includes bonding a plurality of frame members to the interior of a tapered tailboom. The frames are located on a bayonet type tool. An adhesive pack is applied to each frame. The bayonet type tool is inserted into the tailboom until the adhesive packs come into contact with the interior walls of the tailboom. Conductive heating tiles are applied to the tailboom. The conductive heating tiles are controlled to achieve and maintain viscosity of the adhesive packs. During this period the bayonet tool is actuated so that the frames are translated in relation to the tailboom. The heating tiles are then controlled to achieve and maintain the adhesive at a requisite curing temperature.
摘要:
A shrink film applying apparatus includes an article feed for feeding articles for shrink-wrapping at line pressure; a wrapping conveyor driven at a wrapping speed through a wrapping zone, the wrapping conveyor receiving articles from the article feed. First and second films are supplied to the wrapping zone. A plurality of flight bars are individually driven in a path at a variable speed. A sealing mechanism within the wrapping zone seals the first film to the second film at contact points to form a circumferential film unit substantially surrounding grouped articles within loops of second film and a corresponding portion of the first film, the film unit being shrinkable about the grouped articles to form a package. Related methods and subassemblies of the apparatus are disclosed.
摘要:
The invention is a device for welding two overlapping film sections situated on one side of a goods stack. The device includes a welding bar with a welding surface oriented in the direction of the film sections to be welded. The spacing between the welding bar and the film sections is reducible. The welding surface is elastically deformable into a concave course and/or to a convex course between its two ends. At least one displacing device adjusts the course of the welding surface to a concave and/or to a convex course. The displacing device displaces welding bar. A control unit of the welding bar individually controllable, such that the curvature of the welding bar is adjustable to the contour of the side of the goods stack in the region of the film sections to be welded with one another for the subsequent welding of the overlapping film sections.
摘要:
A process of manufacturing a roll of plastic bags. The process includes forming a tubular blown film, and collapsing the tubular blown film so that the tubular blown film includes a first side, a second side, a first edge, and a second edge. Openings are cut in the collapsed tubular blown film, and sealing closure mechanisms are inserted through the openings into the collapsed tubular blown film. The sealing closure mechanisms are then fixed to the collapsed tubular blown film.
摘要:
A method of making a pool liner, said pool liner having a floor section, a wall section and substantially invisible seams, said method comprising the steps of: providing a plurality of floor sheets wherein each sheet of said plurality of floor sheets has an edge; arranging said floor sheets in a pre-determined direction such that at least one edge of one sheet of said first plurality of floor sheets overlaps an adjacent edge of one sheet of said first plurality of floor sheets thereby creating a floor sheet to floor sheet intersection; heat welding said overlapping floor sheets at said floor sheet to floor sheet intersection; providing at least one wall sheet where said at least one wall sheet has an edge; placing said at least one wall sheet generally perpendicularly relative to said plurality of floor sheets; overlapping said at least one wall sheet with said floor sheets thereby creating a floor sheet to wall sheet intersection; and heat welding said at least one wall sheet with overlapping floor sheets at said floor to wall intersection.
摘要:
Plastic bags, rolls of plastic bags, and tubular blown film processes for making rolls of plastic bags. The rolls of plastic bags include a tubular blown film with a plurality of perforation lines along which plastic bags are separated from the roll. The perforation lines are formed so that portions of the lips of the plastic bags are offset from each other. The offset portions of the lips facilitate opening of the bags.
摘要:
A method of producing a composite molded body including joining a pre-molded preform (a) and a preform (b) with a fiber-reinforced thermoplastic resin by (1) providing reinforcing fibers having a weight average fiber length of 1 mm or more in at least one of the preforms (a) and (b), (2) using a thermoplastic resin (A) for the preform (a) and using the thermoplastic resin (A) or a thermoplastic resin (B) for the preform (b), (3) forming a thin film of a thermoplastic resin (C) on a surface of either the preform (a) or (b), or on surfaces of preforms (a) and (b), and (4) melting the thermoplastic resin (C) and a part of the preforms (a) and (b) by heating such that the thin film is placed at a boundary surface of a joint, and molding the composite molded body by the joint due to the melting.
摘要:
A process and apparatus for severing and simultaneously sealing a plurality of plies of thermoplastic material to form bags for storing foods therein is provided. A severing and sealing element fabricated from a long range ordered alloy is used. The use of that alloy provides increased element life at higher operating temperatures while significantly reducing odor and off-flavor problems in the bags.
摘要:
A device for splicing and continuously providing an outgoing film web includes a splicing unit for splicing a first or a second incoming film web to the outgoing film web, and a clamping unit and an intermediate film storage for the outgoing film web. The splicing unit includes a first sealing jaw with a first holding device for the outgoing film web, and a first cutting device for severing the outgoing film web in the region of the first sealing jaw. The splicing unit includes a second sealing jaw with a second holding device alternately for the first or the second incoming film web, and a second cutting device for severing this incoming film web. The sealing jaws with their respective holding devices can be displaced relative to one another out of the region of action of their first and second cutting devices into their mutual region of action.