摘要:
A bag ( 1 0) in plastic shopper type with straps (1 1 0) having gusset structure re-folded at the centerline to form eight uniform layers, with bottom star welding, including externally of a multilayer tail (1 20) printable that also facilitates the production in coils (20) compact of large diameter and properly wrapped, ensuring uniformity of traction. A shaped die-cutting (1 41 ) longitudinally separates the straps from the said tail which remains joined to the bottom of the bag on the not die-cut portion (1 42), after the conventional separation from the roll, in the manner of protruding peninsula. The manufacturing process (31 ) of said bag ( 1 0), with production plant (30) by five stations (30A - 30E) provides the following production phases: Phase A) unwinding film from a reel, Phase B) cut with longitudinal welding and re-folding, Phase C) first welding-cutting, contextual (1 31, 1 41 ); Phase D) second welding-die-cutting, contextual (1 30, 1 40); Phase E) rolls winding.
摘要:
A bag includes a body and a floor coupled to a bottom end of the body to define an interior region therebetween. A mouth is formed in a top end of the body and is arranged to open into the interior region. The body and floor of the bag are made from plastics materials.
摘要:
Une machine de fabrication de sac à fond plat comporte un tambour (50) pour entraîner au moins une ébauche (6a) de forme tubulaire aplatie selon une direction d'avance, des premiers moyens de refoulage (51) en amont du tambour (50) pour marquer sur l'ébauche (6a) une première ligne de pliage (64) transversale par rapport à la direction d'avance, des moyens de pincement avant (52) sur le tambour (50) pour pincer un bord avant (68) de l'ébauche sur le tambour (50), dans une étape d'ouverture, et entraîner l'ébauche (6a), des premiers moyens de pincement latéraux (53) sur le tambour (50) pour pincer des bords latéraux de l'ébauche (6a)au niveau du première ligne de pliage (64). La machine comporte en outre des premiers moyens de réglage (7) pour régler en marche à la fois la distance entre le bord avant (68) et la première ligne de pliage (64) et la position angulaire relative des moyens de pincement avant (52) et des premiers moyens de pincement latéraux (53).
摘要:
Bei einem Verfahren zum Verschließen eines schlauchförmigen Sackkörpers aus einem Gewebe aus monoaxial verstreckten Polymer-, insbesondere Polyolefin- oder Polypropylenbändchen, umfassend das Herstellen einer Bodenfaltung derart, dass der Sack einen im Wesentlichen rechteckigen Boden aufweist, werden wenigstens zwei einander wenigstens teilweise überlappende Lagen des Bodens zum Verschließen des Bodens im Bereich ihrer Überlappung mit zumindest einer Schweißnaht miteinander verschweißt, wobei sich die wenigstens eine Schweißnaht zumindest über die Länge der Breit- und/oder der Schmalseite des rechteckigen Bodens erstreckt.
摘要:
A compacted tube structure for forming bags. The structure includes a plurality of alternating inner and outer longitudinally extending folds that define a plurality of outwardly extending projections. The outwardly extending projections are stacked one upon another on a first side and a second side of the structure on opposite sides of the longitudinal axis. The structure may further include at least one S-fold extending across a width for shortening the length of the structure. Top and bottom projections on each side may include an edge tab. The top and bottom edge tabs may be sealed together to form an edge margin on each side for retaining the compacted configuration of the structure. The structure may also include a plurality of separation lines and sealed ends for defining one or more bags.
摘要:
The invention relates to a method for producing a bag (25,40) made of a polymer and/or metal film material. Said bag (25,40) is closed at the bottom end thereof and is provided with four outer walls (A-D) that are connected by means of four seams (27). The novelty of the invention lies in the fact that the material (A-E) needed to make the bag is fed to an unwinding device of a bottom-forming apparatus in the form of a film tube (25, 40) that is coiled on a reel while the bottom-forming apparatus separates the unwound tube into tube parts and seals at least one end of the bag.
摘要:
A wrap-bag (1000, 1100, 100, 101, 601, 708, 742, 877, 1200, 1300) includes a bag body (1006, 1310, 119, 119"', 618, 724,756, 876) defining therein a compartment (384) accessible through an opening (379, 616, 722) at one end of the bag body, and, secured to the bag body along one edge thereof and extending therefrom to a free distal end (1003), a flexible strap (1009, 1005, 109, 125, 609, 709, 706, 889, 1312) of width sufficient to span at least a majority of the compartment (384). The strap carries an array of fastener elements (102) on an opposite side, each fastener element (102) having a stem extending integrally from a band of resin film extending across the strap and encapsulating surface features of the strap to form an inseparable laminate. The strap is of sufficient length to wrap about an object, with the strap overlapping the bag body to engage the exposed fibers of the bag with the fastener elements (102), to secure the wrap-bag to the object. The product is useful for holding components (1222) to a chassis (1220) prior to assembly, or for holding charges for detonation.
摘要:
The device makes it possible to produce at least one scored line in at least one plastic outer layer of a film (10). It comprises a bearing surface for the film (10) and at least one projection (52a, 52b) for forming the scored line by penetration of the projection into the said plastic layer (12) when the film (10) is in position against the said bearing surface. The projections maybe arranged in the form of ribs on one or more coaxial rollers (51a, 51b). The projections may form the scored line by ultrasonic plastic flow, the film being compressed between a sonotrode and the rollers. The invention provides methods using these devices. It also provides films having scored lines, and packagings having scored lines.
摘要:
Disclosed is a bag (11), and a method of making the bag, having a welded end (12) and an open end (13) having a series of flaps or tie parts (14) formed thereon. The bag is formed from a tubular body folded upon itself along its longitudinal central region whereby no more than two gussets are formed along each longitudinal edge of the bag. A roll (10) of bags (11) is also disclosed in which the welded end (12) of one bag is joined by a line of weakness (15) to the flap or tie parts (14) of the next bag in the roll.
摘要:
A multi-ply plastic bag from a continuous strip of bags on a roll is supplied to a user with the top of the bag partially opened. A tear line between the bottom of a leading bag and a top of a subsequent bag separates the individual bags. A broad slit centrally located in the tear line passes through all but one ply of the strip of bags. The bag dispenser has an upwardly projecting tongue which engages the slit in the tear line when a user draws a bag from the dispenser. The tongue impedes the subsequent bag from moving forward. The adjacent bags separate along the tear line. The ply which does not have a slit rides over the tongue and pulls apart the plies at the opening of the subsequent bag before the leading bag completely separates from the subsequent bag.