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
  • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
  • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
• • 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
  • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
  • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
  • B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
  • B65D1/0261—Bottom construction
  • B65D1/0284—Bottom construction having a discontinuous contact surface, e.g. discrete feet
• • 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
  • B65D23/00—Details of bottles or jars not otherwise provided for
  • B65D23/001—Supporting means fixed to the container
• • 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
  • B65D2501/00—Containers having bodies formed in one piece
  • B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
  • B65D2501/0018—Ribs

Definitions

• the present invention relates to improvements made to containers, in particular bottles, made of thermoplastic material obtained by blowing or stretch-blowing a preform, these containers comprising a side wall and a bottom connected to the latter, said bottom comprising, in its region central, a multi-branch cross-shaped imprint imprinted in the external face of the bottom wall, this cross imprint comprising a substantially circular central hollow around which radiate the branches of radial extent distributed regularly.
• Containers, in particular bottles, thus formed can be filled with a hot liquid (that is to say having a temperature at most equal to about 94 ° C).
• a hot liquid that is to say having a temperature at most equal to about 94 ° C.
• the bottom of a container thus designed, the material of the central part of which has remained in an amorphous state and therefore has less mechanical resistance in contact with the hot liquid, is mechanically reinforced by the imprint in the shape of a multibranch cross and does not does not deform under the effect of heat.
• the invention therefore aims to remedy this drawback and to provide an improved architecture of the bottom of the container which allows said container to withstand a pasteurization process without deformation of its bottom.
• a container in particular a bottle, made of thermoplastic material as set out above is characterized, being arranged in accordance with the invention, in that the bottom is, moreover, of petaloid type, with the bottom wall of generally convex outwardly with at least three feet located towards the periphery of the bottom and formed by growths regularly distributed angularly and separated from each other by a portion of the convex wall of the bottom, in that the feet and the branches of the cross imprint are equal in number, in that the branches of the cross impression are arranged in correspondence with the feet and aligned radially respectively with these, in that each leg has a stress absorption notch in its support part, and in that, in each foot, the stress absorption notch remains radially separated from the end of the corresponding branch of the cross impression.
• the containers according to the invention are capable, a fortiori, of undergoing without damage a hot filling (filling with a hot liquid at a temperature at most equal at around 94 ° C).
• the substantially circular central bowl has a depth substantially greater than that branches of the cross print.
• the portions of the convex wall of the bottom which separate two adjacent feet extend between the corresponding adjacent arms of the cross impression, up to substantially the edge of the central bowl. But to avoid a central weakening, it is preferable that the aforesaid portions of the convex wall of the bottom which separate two adjacent feet do not open into the central bowl and that their end situated radially towards the center remains separated from the central bowl by a rim , which edges contribute to stiffen the periphery of the central hollow.
• the petaloid bottom can, in principle, include any number, even high, of feet.
• the hollow imprint in a multibranch cross can in principle include any number, even high, of branches.
• the branches of the cross impression have a radial extent which makes them arrive, in part, in the initiation of the petals constituting the feet and while, moreover, the branches of the cross impression have a substantial width, it follows that, in the container of the invention, it is not possible to provide a substantial number of feet and branches of the cross imprint. In practice, this number must be greater than three (minimum number to ensure a stable base of the container), but does not seem to be able to exceed five. In practice the number of four seems to correspond to the best compromise.
• the thickness of the bottom of the container arranged in accordance with the invention is significantly less than that of the bottom with a single multibranch cross impression provided in a container intended for hot filling only: the use of provisions of the invention can significantly reduce the amount of material, of the order of 20 to 30% for the bottom alone and of the order of 3 to 10% for the entire container, depending on the type of container. This therefore results in a substantial saving of money, which makes the provisions of the invention advantageous if only for the sole application of containers suitable for hot filling.
• the invention relates to a container made of thermoplastic material, for example PET, obtained by blow molding or stretch blow molding of a preform previously obtained by molding.
• the bottle generally designated by the reference 1 in FIGS. 2B and 3B (in which only the lower part of the bottle is visible), has a side wall 2 and a bottom 3 connected to the latter.
• the bottom 3 has, in its central region, an imprint 4 in the form of a multibranch cross imprinted in the hollow on the external face of the bottom wall 5.
• the cross imprint 4 has a substantially circular central bowl 6 (which results in a substantially round plate 7 projecting inside the bottle) in the center of which is the button or pad 9 of material corresponding, in known manner, to the housing of the preform injection point.
• Around the central bowl 6 radiate the branches 8 of radial extent distributed regularly.
• the branches 8 of the cross impression 4 are four in number, spaced apart by 90 °, for a reason which will be explained below.
• the branches 8 of the cross impression 4 have substantially large dimensions, with a pronounced relief.
• the branches 8 have parallel edges giving them an individual rectangular shape or, as illustrated, edges which are substantially divergent in the direction of the periphery giving them a substantially trapezoidal shape.
• Their length is approximately twice their average width, and their average depth is approximately half their average width.
• the cross impression 4 is formed in the central region of the bottom wall 5 in which the thermoplastic material has remained amorphous.
• the bottom 3 is shaped according to the so-called "petaloid" type with the bottom wall 5 having a generally convex shape towards the outside.
• protuberances 10 projecting outwardly and located towards the periphery of the bottom; more precisely, the most projecting part 11 of the protuberances 10 is located in the vicinity of the periphery of the bottom while the protuberances descend in a gentle slope towards the center of the bottom.
• the protrusions 10 are regularly distributed angularly and are separated from each other by a portion of a convex bottom wall. which constitutes a valley 12 of radial extent separating two adjacent outgrowths.
• the protrusions 10 constitute feet, the most projecting part 11 of which is the support zone by which the container rests on a support.
• the protrusions or feet 10 and the branches 8 of the cross formed by the central imprint 4 are in equal number because, as can be seen particularly well in FIG. 1, the branches 8 of the cross imprint are engaged , at least towards their respective ends, in the feet 10, at least in the least projecting part of these.
• the feet 10 and the branches 8 are not only equal in number, but are also mutually aligned radially.
• Such a conformation is, in practice, imposed by the need to have at least three feet so that the container can rest stably on a support and by the need to have branches 8 of the cross impression 4 which have a relief and substantial dimensions, especially in terms of their width.
• the number of feet, and therefore the number of branches 8 of the cross impression 4 cannot be less than three, but conversely cannot, in practice, be too high in view of the requirements obtaining correct shapes by blowing during manufacture.
• the bottom 3 has good rigidity during use, while having a relative aptitude for deformation in the presence of hot liquid, it is desirable to provide suitable reinforcing elements.
• the portions of the convex wall or valleys 12 which separate two adjacent feet extend between two arms 8 consecutive of the central impression in the form of a cross until substantially at the edge of the central bowl 6, without however opening into that -this and leaving a slight rim 15 remaining, forming an armature, between their radially inner end and the central bowl 6.
• the most protruding part 11 of the feet 10 is not smooth, but has a depression or notch 13 with a concavity facing outwards.
• the possible deformation which may result therefrom is then located at this notch 13, called the stress absorption notch.
• the presence of the stress absorption notch 13 reveals two support zones 11 a and 11 b located on either side thereof. This results in a doubling of the support zones which are not four (in the example considered) corresponding to the number of feet, but eight. This results in better stability of the container resting on a support.
• each foot 10 shows a transverse bar 14 between the radially outer end of each branch 8 of the central cross-shaped imprint 4 and the stress absorption notch 13 of the foot 10 which is located in the extension of the previous one.
• the transverse bar 14 serves, on the one hand, to stiffen the gently sloping part of the foot 10 by bracing the two lateral edges of radial extent of the foot 10 and, on the other hand, serves as an articulation to the central part of the bottom stiffened by the cross impression 4 when this central part is sucked inwards during the cooling of the liquid.
• the bottle thus formed can withstand, without appreciable deformation of its bottom, a process of pasteurization of its liquid content, whether it is a flat liquid (for example fruit juice) or a liquid containing dissolved gas. or carbonated liquid (for example beer).
• a flat liquid for example fruit juice
• a liquid containing dissolved gas for example beer
• carbonated liquid for example beer
• the material constituting the bottom has a relatively reduced thickness, compared to the previous containers (for example reduction of the order of 20 to 30%).
• the bottle of the invention is, from this point of view, much more advantageous than the current bottles suitable for hot filling, which have a substantially thicker bottom, in the case of bottles of the same type.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Ceramic Engineering (AREA)
• Containers Having Bodies Formed In One Piece (AREA)
• Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
• Pens And Brushes (AREA)
• Dental Preparations (AREA)
• Adhesives Or Adhesive Processes (AREA)
• Shaping Of Tube Ends By Bending Or Straightening (AREA)
• Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
• Road Signs Or Road Markings (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=8861886

Family Applications (1)

Country Status (14)

Families Citing this family (85)

Family Cites Families (17)

• 2001
  • 2001-04-03 FR FR0104516A patent/FR2822804B1/fr not_active Expired - Fee Related
• 2002
  • 2002-04-02 JP JP2002579314A patent/JP3741689B2/ja not_active Expired - Fee Related
  • 2002-04-02 PT PT02722390T patent/PT1373076E/pt unknown
  • 2002-04-02 CA CA002441593A patent/CA2441593A1/fr not_active Abandoned
  • 2002-04-02 KR KR1020037013054A patent/KR100547665B1/ko not_active IP Right Cessation
  • 2002-04-02 ES ES02722390T patent/ES2235031T3/es not_active Expired - Lifetime
  • 2002-04-02 CN CNB02807615XA patent/CN1236963C/zh not_active Expired - Fee Related
  • 2002-04-02 AT AT02722390T patent/ATE285945T1/de not_active IP Right Cessation
  • 2002-04-02 MX MXPA03009067A patent/MXPA03009067A/es active IP Right Grant
  • 2002-04-02 EP EP02722390A patent/EP1373076B1/fr not_active Expired - Lifetime
  • 2002-04-02 US US10/472,388 patent/US7051889B2/en not_active Expired - Fee Related
  • 2002-04-02 WO PCT/FR2002/001134 patent/WO2002081312A1/fr active IP Right Grant
  • 2002-04-02 BR BRPI0208556-9A patent/BR0208556B1/pt not_active IP Right Cessation
  • 2002-04-02 DE DE60202450T patent/DE60202450T2/de not_active Expired - Lifetime

Also Published As

Similar Documents

Legal Events