WO2012151643A1 - Non-circular tube - Google Patents

Non-circular tube Download PDF

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Publication number
WO2012151643A1
WO2012151643A1 PCT/BG2012/000012 BG2012000012W WO2012151643A1 WO 2012151643 A1 WO2012151643 A1 WO 2012151643A1 BG 2012000012 W BG2012000012 W BG 2012000012W WO 2012151643 A1 WO2012151643 A1 WO 2012151643A1
Authority
WO
WIPO (PCT)
Prior art keywords
head
tubular body
tube
rounding
welding
Prior art date
Application number
PCT/BG2012/000012
Other languages
French (fr)
Inventor
Miroslav Ivanov Hinkov
Original Assignee
Mechatronica Sc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mechatronica Sc filed Critical Mechatronica Sc
Priority to EP12721702.4A priority Critical patent/EP2707299B1/en
Publication of WO2012151643A1 publication Critical patent/WO2012151643A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/02—Body construction
    • B65D35/10—Body construction made by uniting or interconnecting two or more components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/02—Body construction
    • B65D35/04—Body construction made in one piece
    • B65D35/08—Body construction made in one piece from plastics material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/02—Body construction
    • B65D35/12—Connections between body and closure-receiving bush

Definitions

  • the non-circular tube is applicable to the packing industry.
  • Non-circular tube is known [US3307738], consisting of tubular body (1) with a head (3) attached to one end (2) incorporating a central round opening (4) to allow the product to be dispensed.
  • the head (3) can have a non-circular cross section.
  • the head (3) profile ensures transition of the head (3) surface along the tangent to the rounding (5) of the welding seam (6).
  • the closing of the tube after filling is with a transverse end seam (7) formed in a plane (9) passing through the axis of the tube as close as possible to the longitudinal seam (10).
  • the tubular body (1 ) is made from laminated foil and after welding follows the rounding (5) of the head (3).
  • the plane of the front end (2) of the tubular body (1) prior to the welding to the head (3) is perpendicular to the axis of the tubular body (1).
  • the known non-circular tube has some disadvantages, illustrated in
  • the head (3) has an elliptical cross-section in the plane of the welding seam (6) to the tubular body (1), the opening (4) in the head (3) has a circular cross section and its projection in the plane of the base of the head (3) is located in the center of the ellipse.
  • Seam (6) between the tubular body (1) and head (3) has a rounding (5) with a constant radius along the entire periphery of head (3).
  • FIG. l shows two overlapped cross- sections of the known tube - one is A-A through the long ellipse axis and the other B-B - through the short ellipse axis, representing the cross-section of head (3) in the rounding zone (5).
  • the radius R of the rounding (5) is constant along the entire periphery of head (3), and the tubular body (1) is cut in a plane perpendicular to its axis and is positioned against the head (3) in a way so that in the widest part of the head (3) (section A- A) the front end (2) of the foil is at point A on the tangent of the inclined part of head (3) and rounding (5).
  • the height H of the tubular body (1) relative to the base of the head (3) changes along the periphery of head (3) (point B of section B-B), which results in poor appearance of the welding as the welding line is not in a plane along the entire periphery of the head (3).
  • the objective of the invention is to develop a non-circular tube with improved appearance of the welding between the tubular body (1) and the head
  • a non-circular tube which comprises of a tubular body (1) made from laminated foil and a head (3).
  • the front end (2) of the body (1) is rounded (5) on the head (3) and is sealed.
  • the head (3) has an opening (4) for expelling the product.
  • the cross-section can be non-circular.
  • the end seam (7) of the tube is in a plane (9) passing through the tube axis and this axis may pass into the zone of end seam (7) as near as possible to the longitudinal seam (10) of the tubular body (1).
  • the front end (2) of the tubular body (1) before welding to the head (3) is shaped into a 3-D curve, which, considering the shape and size of the head (3), ensures in each head (3) cross section a constant height H between the front end (2) of the tubular body (1) and the base of the head (3) according to the following relation:
  • L is the variable length of the forming curve of the tubular body (1) in each of its sections;
  • a is constant length
  • R is constant radius of the rounding (5)
  • a is variable angle between the surface line and head (3) axis
  • a max is the biggest value of the variable angle a.
  • the rounding (5) can be located inside a step (1 1) on the head (3) within the welding seam zone in a way that ensures, after welding the tubular body (1) to the head (3), a smooth transition from the tube body ( 1 ) to the head (3 ) surface.
  • An advantage of the non-circular tube is that the welding between the tubular body (1) and the head (3) has an improved appearance.
  • - Fig.1 shows two overlapped sections of the known tube - one along the major axis of the ellipse - A- A, and the other B-B - along the minor axis, representing sections of the head (3) in the rounding zone (5).
  • - Fig.2 shows that, in the known tube, the height of the front end (2) of the tubular body (1) relative to the head (3) base changes along the periphery of the head- (3).
  • - Fig.3 represents the appearance of the tube with a constant radius of rounding (5) in the welding zone and modified body (1);
  • - Fig.4 shows two overlapped sections of the invented tube - A-A along the major axis of the ellipse, and B-B - along the minor axis, representing sections of the head (3) in the rounding zone (5) with modified body (1) ;
  • - Fig.5 is a section of the tube with a head (3), having a step (1 1) in the rounding zone (5);
  • FIG. 6 shows the profile of the front end (2) of the tubular body (1) with the modified 3D cut curve on its front end (2).
  • the non-circular tube in FIG.3 consists of tubular body (1) made from laminated foil, having in its front end (2) a rounding (5) around the head (3) where welding seam (6) is made. In the head (3) there is an opening (4) for expelling the product. In the welding seam (6) zone between the tubular body (1) and the head (3), the cross section is non-circular.
  • the seam (7) at the bottom end (8) of the tube is in a plane (9) passing through the tube axis, plane (9) may be as close as possible to the longitudinal seam (10) of the tubular body (1).
  • the front end (2) of the tubular body (1) before welding to the head (3) is shaped into a 3D curve, which, taking into account the shape and size of the head (3), provides a constant height H between the front end (2) of the tubular body (1) and the head (3), based upon the following relation:
  • L is variable length of the forming curve of the tubular body (1) in each of its sections;
  • a is constant length
  • R is constant radius of the rounding (5)
  • a is variable angle between the surface line and head (3) axis
  • a max is the biggest value of the variable angle a.
  • the length b of the part of the body (1) in the rounding zone (5) depends on the value of the angle a and is:
  • the height h of the point where the surface line of the head (3) touches the rounding (5) is equal to
  • the linear part of the body (1) between the start of rounding (5) and the front end (2) of the foil (1) is equal to:
  • the total length of the body (1) in any given section is equal to:
  • the rounding (5) can be located inside a step (11) on the head (3) within the welding seam zone (6) in a way that ensures, after welding the tubular body (1) to the head (3), a smooth transition from the tube body (1) to the surface of the head (3).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tubes (AREA)

Abstract

The non-circular tube is applicable to the packing industry and it has an enhanced appearance to the welding between the tubular body (1) and the head (3). The front end (2) of the tubular body (1) before welding to the head (3) is shaped into a 3-D curve which, accounting for the shape and size of the head (3), in each section of the head (3) ensures a constant height H of the front end (2) of the tubular body (1) relative to the base of the head (3) according to the following relation: (I) Where: L is variable length of the forming curve of the tubular body (1) in each of its sections; a is constant length; R is constant radius of the rounding (5); α is variable angle between the surface line and the axis of the head (3); αmax is the greatest value of the variable angle α.

Description

NON-CIRCULAR TUBE
Field of the Invention The non-circular tube is applicable to the packing industry.
Prior Art
Non-circular tube is known [US3307738], consisting of tubular body (1) with a head (3) attached to one end (2) incorporating a central round opening (4) to allow the product to be dispensed. In the area where the body (1) is fixed to the head (3) the head (3) can have a non-circular cross section. The head (3) profile ensures transition of the head (3) surface along the tangent to the rounding (5) of the welding seam (6). The closing of the tube after filling is with a transverse end seam (7) formed in a plane (9) passing through the axis of the tube as close as possible to the longitudinal seam (10). The tubular body (1 ) is made from laminated foil and after welding follows the rounding (5) of the head (3). The plane of the front end (2) of the tubular body (1) prior to the welding to the head (3) is perpendicular to the axis of the tubular body (1).
The known non-circular tube has some disadvantages, illustrated in
FIG.2. The head (3) has an elliptical cross-section in the plane of the welding seam (6) to the tubular body (1), the opening (4) in the head (3) has a circular cross section and its projection in the plane of the base of the head (3) is located in the center of the ellipse. Seam (6) between the tubular body (1) and head (3) has a rounding (5) with a constant radius along the entire periphery of head (3).
To explain the disadvantages, FIG. l shows two overlapped cross- sections of the known tube - one is A-A through the long ellipse axis and the other B-B - through the short ellipse axis, representing the cross-section of head (3) in the rounding zone (5). The radius R of the rounding (5) is constant along the entire periphery of head (3), and the tubular body (1) is cut in a plane perpendicular to its axis and is positioned against the head (3) in a way so that in the widest part of the head (3) (section A- A) the front end (2) of the foil is at point A on the tangent of the inclined part of head (3) and rounding (5). Due to the different geometry of the surface of the head (3) in different sections, the height H of the tubular body (1) relative to the base of the head (3) changes along the periphery of head (3) (point B of section B-B), which results in poor appearance of the welding as the welding line is not in a plane along the entire periphery of the head (3).
Objective and summary of the invention
The objective of the invention is to develop a non-circular tube with improved appearance of the welding between the tubular body (1) and the head
(3)·
The objective is achieved by developing a non-circular tube which comprises of a tubular body (1) made from laminated foil and a head (3). The front end (2) of the body (1) is rounded (5) on the head (3) and is sealed. The head (3) has an opening (4) for expelling the product. At the region where the body (1 ) is sealed to the head (3) the cross-section can be non-circular. The end seam (7) of the tube is in a plane (9) passing through the tube axis and this axis may pass into the zone of end seam (7) as near as possible to the longitudinal seam (10) of the tubular body (1). The front end (2) of the tubular body (1) before welding to the head (3) is shaped into a 3-D curve, which, considering the shape and size of the head (3), ensures in each head (3) cross section a constant height H between the front end (2) of the tubular body (1) and the base of the head (3) according to the following relation:
Figure imgf000004_0001
Where: L is the variable length of the forming curve of the tubular body (1) in each of its sections;
a is constant length;
R is constant radius of the rounding (5);
a is variable angle between the surface line and head (3) axis;
amax is the biggest value of the variable angle a.
It is possible (FIG. 5) that the rounding (5) can be located inside a step (1 1) on the head (3) within the welding seam zone in a way that ensures, after welding the tubular body (1) to the head (3), a smooth transition from the tube body ( 1 ) to the head (3 ) surface.
An advantage of the non-circular tube is that the welding between the tubular body (1) and the head (3) has an improved appearance.
Description of the figures enclosed
- Fig.1 shows two overlapped sections of the known tube - one along the major axis of the ellipse - A- A, and the other B-B - along the minor axis, representing sections of the head (3) in the rounding zone (5).
- Fig.2 shows that, in the known tube, the height of the front end (2) of the tubular body (1) relative to the head (3) base changes along the periphery of the head- (3).
- Fig.3 represents the appearance of the tube with a constant radius of rounding (5) in the welding zone and modified body (1);
- Fig.4 shows two overlapped sections of the invented tube - A-A along the major axis of the ellipse, and B-B - along the minor axis, representing sections of the head (3) in the rounding zone (5) with modified body (1) ;
- Fig.5 is a section of the tube with a head (3), having a step (1 1) in the rounding zone (5);
- Fig.6 shows the profile of the front end (2) of the tubular body (1) with the modified 3D cut curve on its front end (2). An exemplary realization and performance of the invention
The invention is described in more detail with an exemplary realization of the tube shown in the figures, where:
The non-circular tube in FIG.3 consists of tubular body (1) made from laminated foil, having in its front end (2) a rounding (5) around the head (3) where welding seam (6) is made. In the head (3) there is an opening (4) for expelling the product. In the welding seam (6) zone between the tubular body (1) and the head (3), the cross section is non-circular. The seam (7) at the bottom end (8) of the tube is in a plane (9) passing through the tube axis, plane (9) may be as close as possible to the longitudinal seam (10) of the tubular body (1). The front end (2) of the tubular body (1) before welding to the head (3) is shaped into a 3D curve, which, taking into account the shape and size of the head (3), provides a constant height H between the front end (2) of the tubular body (1) and the head (3), based upon the following relation:
Figure imgf000006_0001
Where:
L is variable length of the forming curve of the tubular body (1) in each of its sections;
a is constant length;
R is constant radius of the rounding (5);
a is variable angle between the surface line and head (3) axis;
amax is the biggest value of the variable angle a.
The definition of this relation is extracted from the geometrical correlations of the tube construction (FIG.4), namely:
The length b of the part of the body (1) in the rounding zone (5) depends on the value of the angle a and is:
Ra
b =
180
The height h of the point where the surface line of the head (3) touches the rounding (5) is equal to
h - R sin a
Accordingly, the height H for angle amax is equal to
H = Rsm amax
The linear part of the body (1) between the start of rounding (5) and the front end (2) of the foil (1) is equal to:
H - h = R sin gmax - sin a
cos a cos
The total length of the body (1) in any given section is equal to:
L = a + b + c
And, respectively:
Figure imgf000007_0001
It is possible that the rounding (5) can be located inside a step (11) on the head (3) within the welding seam zone (6) in a way that ensures, after welding the tubular body (1) to the head (3), a smooth transition from the tube body (1) to the surface of the head (3).

Claims

Claims
1. A non-circular tube, comprising of a tubular body (1) formed from laminated foil, having its front end (2) wrapped over a rounding (5) in the head (3) where a welding seam (6) is made, the head (3) have opening (4) for expelling the product, in the welding seam zone (6) the head (3) has a non- circular section, and the seam (7) at the bottom end (8) of the tube is in a plane (9) passing through the tube axis, and this plane (9) can be as close as possible to longitudinal seam (10) of the tubular body (1), characterized in that the front end (2) of the tubular body (1) before welding to the head (3) is shaped into a 3-D curve, which, taking into account the shape and size of the head (3), provides in each section of the head (3) with a plane (9) passing through the axis of the tube, constant height H to the front end (2) of the tubular body (1) relative to the base of the head (3) according to the following relation:
L =
Figure imgf000008_0001
Where:
L is variable length of the forming curve of the tubular body (I) in each of its sections;
a is constant length;
R is constant radius of the rounding (5);
a is variable angle between the surface line of the head (3) and the axis of the head (3);
<xmax is the biggest value of the variable angle a.
2. Non-circular tube as claimed in claim 1, characterized in that the rounding zone (5) is located inside the step (1 1) in the head (3) in such a way as to ensure after welding of the body (1) to the head (3) a smooth transition between the front end (2) of the body (1) and the surface of the head (3).
PCT/BG2012/000012 2011-05-09 2012-04-20 Non-circular tube WO2012151643A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12721702.4A EP2707299B1 (en) 2011-05-09 2012-04-20 Non-circular tube

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG110938 2011-05-09
BG10110938A BG110938A (en) 2011-05-09 2011-05-09 A non-oval tube

Publications (1)

Publication Number Publication Date
WO2012151643A1 true WO2012151643A1 (en) 2012-11-15

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ID=46124223

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PCT/BG2012/000012 WO2012151643A1 (en) 2011-05-09 2012-04-20 Non-circular tube

Country Status (3)

Country Link
EP (1) EP2707299B1 (en)
BG (1) BG110938A (en)
WO (1) WO2012151643A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109514133A (en) * 2018-11-08 2019-03-26 东南大学 A kind of autonomous teaching method of welding robot 3D curved welding seam based on line-structured light perception

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307738A (en) 1964-05-22 1967-03-07 American Can Co Laminated collapsible tube
US4126249A (en) * 1976-02-17 1978-11-21 Lever Brothers Company Collapsible tubes
WO2002018221A1 (en) * 2000-08-29 2002-03-07 Aisapack Holding Sa Soft package with protective layer
EP1679265A1 (en) * 2005-01-06 2006-07-12 Aisapack Holding SA Tube with non-circular cross-section, its manufacturing method and apparatus therefor
DE102005005166A1 (en) * 2005-02-04 2006-08-10 Georg Menshen Gmbh & Co. Kg Closing device for foil bag which fasten the bag to lower surface of connecting piece so as to form convex top side raising the outer edge and winding up locks perpendicularly or diagonally with a rib

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307738A (en) 1964-05-22 1967-03-07 American Can Co Laminated collapsible tube
US4126249A (en) * 1976-02-17 1978-11-21 Lever Brothers Company Collapsible tubes
WO2002018221A1 (en) * 2000-08-29 2002-03-07 Aisapack Holding Sa Soft package with protective layer
EP1679265A1 (en) * 2005-01-06 2006-07-12 Aisapack Holding SA Tube with non-circular cross-section, its manufacturing method and apparatus therefor
DE102005005166A1 (en) * 2005-02-04 2006-08-10 Georg Menshen Gmbh & Co. Kg Closing device for foil bag which fasten the bag to lower surface of connecting piece so as to form convex top side raising the outer edge and winding up locks perpendicularly or diagonally with a rib

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109514133A (en) * 2018-11-08 2019-03-26 东南大学 A kind of autonomous teaching method of welding robot 3D curved welding seam based on line-structured light perception

Also Published As

Publication number Publication date
EP2707299B1 (en) 2015-06-24
EP2707299A1 (en) 2014-03-19
BG110938A (en) 2012-11-30

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