Plastic tube and method for producing such

0001The invention relates to a plastic tube according to the preamble of claim 1. Furthermore, the invention relates to a method for producing a A plastics tube according to the preamble of claim. 9

0002Plastic tubes for example, pasty and / or gel-like packaged in known different versions. Known are in particular such Tubes with a captive hinged lid for resealing the embody discharge port. Known plastic tubes of this type are in the manufactured such that one at one end of the tube body forming length Tube hose a manufactured as a plastic molding tube shoulder piece is inserted and connected to the tube hose by welding. The Tube shoulder piece then forms the conically tapered shoulder and a the tube opening having nipples. In a further operation is the actual shutter mounted on the nipple. In a tube with hinged lid This closure consists of a closure cap which by snapping on, for example, Nipple of the tube shoulder piece is so mounted that an opening in the bottom of Cap is congruent with the tube opening of the nipple. The opening in the closure cap is then through an integrally formed on the closure cap, pivoting hinged lid closed. Structurally these known Plastic tubes with folding shutter or hinged lid consuming.

0003Object of the invention to present a plastic tube with a hinged lid, the can be manufactured in a particularly simple and inexpensive. is to achieve this object a tube according to patent claim 1 is formed. A method for Producing such a tube is the subject of claim. 9

0004In the tube of the invention forms the one part of the closure element, at the flip cover is directly hinged, at the same time the closure body and is permanet connected to the tube body forming tube hose. On additional molding or tube shoulder piece with a tube opening surrounding nipple is not required. The well-known in the manufacture of tubes necessary with hinged lid step for connecting the closure cap with hinged lid with the tube nipple deleted.

0005In development of the invention there are various possibilities. Thus, it is at the Tube package possible that the closure body and the cap part of a Closure element are that in a two-component injection molding is prepared, and or that the closure body and the cap part of a Closure element, and in that the closure cover with an integrally formed Holding portion is attached to the closure body, and or that between the closure lid and the retaining portion a foil hinge is formed, and or that the cap-like closure body in a bottom at least one recess for having flush reception of the holding portion, and or that the holding section having a ring-like part of the section tube opening with Distance surrounds, and or that at the closure member means for aligning the closure member in the Assembly or when connecting to the tube hose are formed, and or that the closure element is a closure cover facilitating the opening of the including depression, and or that the closure body and the cap made of different plastic consist.

0006The method is for example in by the use of closure elements, which with their closure body and closure lid, respectively in a two-component plastic injection molding process are prepared, and or by the use of closure elements, the fastener body and Closure lid are each manufactured separately and then together initially to the closure member are connected, and or by the use of closure elements, the fastener body and Cap each from a different plastic material, and or in that, before the joining of the closure body with the tube hose preferably with at the outer surface visually designed tube hose is carried out to align the tube hose and the closure body relative to each other, and or in that the tube hose positioned on a holder on the Closure body is pulled or pushed, and then the bonding of the occurs tube hose to the closure body.

0007Further developments of the invention are the subject of the dependent claims. The invention is explained below based on the figures one exemplary embodiment. Show it:<dl tsize="12" compact="compact"><dt>Fig. 1</dt><dd>a partial representation in section of a tube according to the invention;</dd><dt>Figs. 2 and 3</dt><dd>in single representation in cross section and in plan view a Closure element of the tube of Figure 1; </dd><dt>Fig. 4</dt><dd>in the positions a - c show various steps of the method according to the invention for producing the tube of FIG. 1</dd></dl>

0008In the figures, 1 is a tube package or tube for receiving a For example, pasty and / or cream-like and / or gel-like product to be packaged. The tube 1 consists essentially of the tube body 2 with the length of a an example laminated tubes hose 3.1 formed wall 3 as well as a Closure element 4 which is provided at one end of the tube body 2 and there limited the interior of this tube body. Until filling the tube 1 with the Packaged which is the closure element 4 opposite end of Tube body 2 open and hold the tube body 2 or its wall 3 a Circular cylindrical shape. After filling of the tube 1 which is in the closure element 4 closed opposite end of the tube body 2 in the usual manner, for example by welding.

0009Of the wall 3 forming tube hose is in the illustrated embodiment from a strip or band-like plastic laminate by forming the laminate in the hose and the overlapping by welding after molding, or adjacent longitudinal sides of the laminate prepared. At least on the inside of the tube body 2 is this laminate by a layer of a standard with the Techniques formed weldable thermoplastic polymer.

0010The closure member 4 is in the illustrated embodiment, a Two-component injection-molded part and consists of a cap-like shaped part Closure body 5 and a cap 6 which is pivotally connected to the Closure body 5 is connected.

0011The cap-like closure body 5 is by welding to the upper end of Tube body 2 tightly connected and accepts the tube 1, the function of Tube shoulder piece known tubes in that the closure body 5 to Tube interior at the respective end of the tube body 2 terminates.

0012The closure body 5 has a bottom 5.1 extending perpendicularly substantially extending the tube axis TA and coaxially with this axis or the axis the closure body 5 has a central opening 7 or the tubal Discharge opening forms. 5.1 the bottom is formed in the region of the opening 7 such that it there at the tube body 2 facing away from outside a recess 8 forms, at the bottom of which the tube opening is 7.

0013The base 5.1 is still having an open at the ground outside and the Depression 8 concentrically surrounding radially spaced annular recess 9 and formed with a recess 10, which radially to the axis of the closure body 5 runs, opens into the recess 9 and extends to the edge of the floor 5.1. The Recesses 9 and 10 are filled out completely and flush with a plastic, forming a retaining portion integrally formed with the lid 6 11, over which the cover 6 is held at the hinged closure body fifth For this is the Transition between the holding portion 11 and the cover 6, ie in the region of the Edge of the bottom 5.1 of a material portion of reduced thickness of a joint or living hinge 12 formed between the lid 6 and the holding section 11, namely with a hinge or pivot axis to the circumference of the tangent Floor 5.1 and lies in the plane of this soil.

0014Specifically, as is shown in FIG 2, the recess 10 at the edge of the cover 5 so formed, that the holding section of the recess 10 formed plastic filling 11 at the edge of the bottom 5.1 a bend or a the direction Tube axis TA extending extension 11.1 forms, of the at a parallel Tube axis TA extending surface of the recess 10 and at its free end also at a in a plane perpendicular to the tube axis TA arranged at the level Closure body 5 supported. This is an additional force receiving mechanical connection between the holding portion 11 and the closure body 5 is reached.

0015The shutter member 5 further has a circumferential wall 5.2, which is substantially is rotationally symmetrical to the tube axis TA and made up of several, axially adjoining, substantially annular portions composed, namely from passing into the bottom portion 13 with 5.1 the smaller diameter, from which following on from the section 13 Section 14 with the slightly larger diameter and of which the portion 14 adjoining section 15 with the largest diameter. Between Sections forming the peripheral wall 5.2 one level or a covenant, so For example, the substantially conical annular collar 16 between the Sections 14 and 15. FIG.

0016The cover 6 is formed in a dish-like manner, with a concave at the outside curved bottom 6.1 and 6.2 with an edge on which the lid 6 via the Film hinge 12 is connected to the holding portion eleventh In the center is on the ground 6.1 a closure pin 17 is integrally formed, as in the illustrated embodiment of Hollow pin is carried out and in the closed position of the cover 6, that is, on the Outer surface of the soil 6.1 geklapptem cover 6 engages the recess 8 and by the tube opening 7 closes tightly.

0017In final manufactured state of the tube 1, the wall extends over 3 of the tube body 2 the section 15 and the collar 16 and is up there with the closure body 5 welded. The closure body 5 consists of a purpose for this Welding suitable plastic, for example of a thermoplastic Plastic, which in addition, the rigidity required for the shutter body 5 ensures, in particular also the opening and closing of the cover 6 in conveniently allow. The lid 6 with the molded holding section 11 consists of a plastic material, which is also in particular in a frequent opening and closing of the lid for a long life for the Hinge 12 guarantees.

0018In order to facilitate opening of the closed lid 6 is on the outer surface of the Floor 5.1 and within the fringe of this soil and the film hinge 12 opposite a recess 18 is formed. Further, at the inner surface of Peripheral wall 5.2 in the area of ​​the portion 15 a radially inner surface of this wegstehender directional web 19 formed.

0019The closure member 4 with the shutter body 5 and the cover 6 is in a prepared two-component injection molding process, wherein the polymeric material or the plastic of the molded part 5 and the polymeric material or the plastic for the cover 6 to the relevant special requirements vary accordingly are chosen, however, such that the necessary connection between these two parts of the closure element is reached. 4

00204 shows in the positions a - c the production of the tube 1. In this case, at a mounting position at first a closure member 4 with the ground 5.1 geklapptem cover 6 provided. The closure member 4 is in this case with the Opening of the cap-like closure body 5 on the on the end side of a Mounting mandrel 20 formed recording placed in such a manner that the straightening web 19 abuts against a formed on this recording stop so that the Closure member 4 is added to a predetermined position and orientation Mounting mandrel 20 (position A of Figure 4).

0021Subsequently, the the tube body 2 and the wall 3 forming Tube hose 3.1 supplied and a predetermined length of hose over the drawn on the mounting mandrel 20 held shutter member 4, so that the case trailing end of the closure body 5 in the region of the section 15 and the Federal 16 encloses (position b of Figure 4).

0022In a further process step is then the tube hose 3.1 with suitable Means pressed against the outer surface of the portion 15 and the collar 16 and in this case welded to the closure body 5, as in position c of FIG 4 is indicated by the arrows K.

0023Is the wall 3 forming tube hose 3.1 already been printed, so it is at the Methods described problem, this tube hose 3.1 so aligned merge with the closure member 4 and connect to that certain elements of the printing on a line, for example, with which the Front of the finished tube 1 defining handle recess lie 18th By Directional web 19 and the corresponding stop on the mounting mandrel 20, each Closure member 4 a predetermined position on the mandrel 20th alignment the tube hose for example, by an image recognition with appropriate control.

0024The invention has been described above based on an embodiment. It understood that numerous changes and modifications are possible without that which the invention concept underlying the invention is exited. Thus, it is also possible for example the shutter body 5 and the lid 6 with the holding portion 11 produce separately and then together to join, but before the existing of these two parts is closure element processed into a tube. 1

0025Furthermore, of course, instead of the target web 19, other means for an aligned positioning of the respective closure body 5 at a Mounting position or be provided on a local holder.

LIST OF REFERENCE NUMBERS

0026<dl tsize="10" compact="compact"><dt>1</dt><dd>tube</dd><dt>2</dt><dd>tube body</dd><dt>3</dt><dd>Wall of the tube body</dd><dt>3.1</dt><dd>tube hose</dd><dt>4</dt><dd>closure member</dd><dt>5</dt><dd>closure body</dd><dt>5.1</dt><dd>ground</dd><dt>5.2</dt><dd>peripheral wall</dd><dt>6</dt><dd>cover</dd><dt>6.1</dt><dd>cover ground</dd><dt>6.2</dt><dd>lid edge</dd><dt>7</dt><dd>Tubal or discharge port</dd><dt>8th</dt><dd>deepening</dd><dt>9, 10</dt><dd>deepening</dd><dt>11</dt><dd>holding section</dd><dt>11.1</dt><dd>angular extension of the holding portion</dd><dt>12</dt><dd>film hinge</dd><dt>13, 14, 15</dt><dd>Section 5.2 of the peripheral wall</dd><dt>16</dt><dd>Shoulder or collar</dd><dt>17</dt><dd>lock pin</dd><dt>18</dt><dd>handle recess</dd><dt>19</dt><dd>directional web</dd><dt>20</dt><dd>installation tool</dd><dt>K</dt><dd>Nip loading Schweißkraft</dd><dt>TA</dt><dd>tube axis</dd></dl>