Cap for container

Abstract

The closing cap comprises a lateral wall around an axis and a transversal wall at one end of the lateral wall. A separating line on the lateral wall defines a retaining ring having a retaining portion engaged with a locking ring, and a closing element engaged with the neck to open or close the container. The cap comprises an incision line and a connecting band connecting the closing element and retaining portion. The cap comprises: a coupling structure inside the lateral wall for coupling the closing element, the lateral wall having a first portion with a first height along an axis parallel to the axis starting from the free edge, and a second portion with a second height measured along an axis parallel to the axis starting from the transversal wall. The ratio between the second and first heights is less than or equal to 2.00.

1 . A closing cap ( 1 ;  1   a ;  1   b ;  1   c ) for a container, comprising a lateral wall ( 3 ) extending around an axis (Z) and a transversal wall ( 4 ) positioned at one end of the lateral wall ( 3 ), a separating line ( 5 ) being provided on the lateral wall ( 3 ) to define a retaining ring ( 301 ), which comprises a retaining portion ( 303 ) which extends as far as a free edge ( 304 ) of the retaining ring ( 301 ) and is configured to internally engage with a locking ring of a neck of the container in such a way as to remain anchored to the neck, and a closing element ( 302 ) removably engageable with the neck, so as to open or close the container; the cap additionally comprising an incision line ( 7 ;  7 ′), which is also provided on the lateral wall ( 3 ) to define, together with the separating line ( 5 ) at least one connecting band ( 306 ;  307 ) for connecting the closing element ( 302 ) and the retaining portion ( 303 ) to each other; wherein the cap ( 1 ;  1   a ;  1   b ;  1   c ) comprises: a coupling structure ( 2 ;  2   a ;  2   c ) positioned inside the lateral wall ( 3 ) for removably coupling the closing element ( 302 ) to the neck of the container, the lateral wall ( 3 ) having a first portion ( 309 ), without the coupling structure ( 2 ;  2   a ;  2   c ) and on which the separating line ( 5 ) and the incision line ( 7 ;  7 ′) are made, which has a first height (T 1 ) measured along an axis parallel to the axis (Z) starting from the free edge ( 304 ), and a second portion ( 310 ) provided with the coupling structure ( 2 ;  2   a ;  2   c ), which has a second height (T 2 ) measured along an axis parallel to the axis (Z) starting from the transversal wall ( 4 ); wherein the ratio between the second height (T 2 ) and the first height (T 1 ) is less than or equal to 2.00 so that the connecting band ( 306 ,  307 ) can be made in the first portion ( 309 ) with suitable dimensions. 
     
     
         2 . The cap according to  claim 1 , wherein the ratio between the second height (T 2 ) and the first height (T 1 ) is less than or equal to 1.70. 
     
     
         3 . The cap according to  claim 1 , wherein the ratio between the second height (T 2 ) and the first height (T 1 ) is greater than or equal to 1.0. 
     
     
         4 . The cap according to  claim 1 , wherein a height (H 2 ) of the cap along an axis parallel to the axis (Z) is greater than or equal to 10.0 mm and is less than or equal to 16.0 mm. 
     
     
         5 . The cap according to  claim 4 , wherein the height (H 2 ) is greater than or equal to 10.0 mm and less than or equal to 12.5 mm. 
     
     
         6 . The cap according to  claim 1 , wherein the cap comprises a sealing element ( 8 ) which extends from the transversal wall ( 4 ) and, in use, is configured to be positioned inside a dispensing opening of the container in order to form a seal with an inner wall of the neck, wherein the height of the sealing element ( 8 ) is less than or equal to the first height (T 1 ). 
     
     
         7 . The cap according to  claim 1 , wherein at a distance from the free edge ( 304 ) equal to the first height (T 1 ) there is a transition from the first portion ( 309 ) to the second portion ( 310 ), the separating line ( 5 ), or the incision line ( 7 ), being positioned at a distance less than or equal to 1.00 mm from said transition. 
     
     
         8 . The cap according to  claim 1 , wherein the at least one connecting band ( 306 ;  307 ) comprises a first connecting band ( 306 ) and a second connecting band ( 307 ) which are defined between the separating line ( 5 ) and the incision line ( 7 ;  7 ′), and wherein the incision line ( 7 ;  7 ′) comprises a first lateral stretch ( 702 ) and a second lateral stretch ( 703 ), which respectively define with a first part of the separating line ( 5 ), which extends from a first end ( 501 ) of the separating line ( 5 ), the first connecting band ( 306 ) and with a second part of the separating line ( 5 ), which extends from a second end ( 502 ) of the latter, the second connecting band ( 307 ). 
     
     
         9 . The cap according to  claim 8 , wherein each connecting band ( 306 ;  307 ) has a height (H 1 ) greater than or equal to 1.00 mm. 
     
     
         10 . The cap according to  claim 8 , wherein the separating line ( 5 ) extends around the axis (Z) between a first end ( 501 ) and a second end ( 502 ) and is circumferentially interrupted so as to leave the retaining ring ( 301 ) and the closing element ( 302 ) joined by a joining portion ( 305 ) which has an angular extent less than that of the incision line ( 7 ;  7 ′) and extends circumferentially in the angular extent of the incision line ( 7 ;  7 ′), the connecting bands ( 306 ;  307 ) connecting the joining portion ( 305 ) and the retaining portion ( 303 ) to each other; the incision line ( 7 ;  7 ′) being positioned between the separating line ( 5 ) and the free edge ( 304 ) and additionally comprising a central stretch ( 701 ;  701 ′), positioned between the first lateral stretch ( 702 ) and the second lateral stretch ( 703 ), which has an end edge configured to be directed, when the cap ( 1 ;  1   a ;  1   b ;  1   c ) is in the open condition, towards the neck, or towards the dispensing opening, of the container. 
     
     
         11 . The cap according to  claim 10 , wherein the cap comprises a tab ( 308 ;  308 ′) whose end edge is formed by the central stretch ( 701 ;  701 ′) and whose lateral edges are formed by two cutting lines ( 6 ) which extend from the central stretch ( 701 ;  701 ′) towards the closing element ( 302 ), the cutting lines ( 6 ) being formed by cuts passing through an entire thickness of the lateral wall ( 3 ). 
     
     
         12 . The cap according to  claim 11 , the first lateral stretch ( 702 ) and the secondo lateral stretch ( 703 ) of the incision line ( 7 ) are aligned with each other and lie in a first plane parallel to a separating plane in which the separating line lies; and wherein the central stretch ( 701 ) lies in the same first plane to form a tab ( 308 ) aligned with the connecting bands ( 306 ;  307 ), or wherein the central stretch ( 701 ′) lies in a second plane parallel to the separating plane and parallel to the first plane to form a tab ( 308 ′) projecting relative to the connecting bands ( 306 ;  307 ). 
     
     
         13 . The cap according to  claim 10 , wherein a centre line of the separating line ( 5 ) and a centre line of the incision line ( 7 ) are positioned angularly opposite each other and also wherein the separating line ( 5 ) and the incision line ( 7 ) have equal angular extent which is greater than 180°. 
     
     
         14 . The cap according to  claim 8 , wherein the separating line ( 5 ) extends around the axis (Z) between a first end ( 501 ) and a second end ( 502 ) and is circumferentially interrupted so as to leave the retaining ring ( 301 ) and the closing element ( 302 ) joined by a joining portion ( 305 ) which has an angular extent less than that of the incision line and extends circumferentially in the angular extent of the incision line, and wherein the separating line ( 5 ) is positioned between the incision line and the free edge ( 304 ); wherein the incision line comprises a central stretch positioned between the first lateral stretch and the second lateral stretch, which has a top edge positioned facing an end edge of the closing element ( 302 ). 
     
     
         15 . The cap according to  claim 1 , wherein the ratio between the second height (T 2 ) and the first height (T 1 ) is less than or equal to 1.40. 
     
     
         16 . The cap according to  claim 4 , wherein the height (H 2 ) is greater than or equal to 10.0 mm and less than or equal to 11.0 mm. 
     
     
         17 . The cap according to  claim 1 , wherein at a distance from the free edge ( 304 ) equal to the first height (T 1 ) there is a transition from the first portion ( 309 ) to the second portion ( 310 ), the separating line ( 5 ), or the incision line ( 7 ), being positioned at a distance less than or equal to 0.50 from said transition. 
     
     
         18 . The cap according to  claim 1 , wherein at a distance from the free edge ( 304 ) equal to the first height (T 1 ) there is a transition from the first portion ( 309 ) to the second portion ( 310 ), the separating line ( 5 ), or the incision line ( 7 ), being positioned at a distance equal to 0.40 mm from said transition. 
     
     
         19 . The cap according to  claim 8 , wherein each connecting band ( 306 ;  307 ) has a height (H 1 ) greater than or equal to 1.20 mm.