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
  • 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

Definitions

• the invention relates to a plastic bottle according to the preamble of patent claim 1.
• the containers made of tinplate or colored sheet, glass or ceramic, which are common in the past, are increasingly being replaced by containers made of plastic.
• plastic containers in particular plastic bottles, are used.
• the low weight and the lower costs play a not inconsiderable role in this substitution.
• the use of recyclable plastic materials and the overall lower overall energy balance in their manufacture also help to promote the acceptance of plastic containers, in particular plastic bottles, by the consumer.
• Plastic bottles have a bottle body that is equipped with a bottle neck with a pouring opening.
• a bottom part adjoins the bottle body, which usually has a regular, preferably circular or oval cross-sectional area.
• the bottom part comprises a bottle bottom, which closes the bottle body and preferably a number of feet, which are separated from one another by indentations in the bottle wall.
• plastic bottles with feet generally have greater tipping stability.
• the mostly flat bottle bottom can bulge due to the weight of the bottle holder. This reduces the radius of the support area and the bottle can fall over more easily.
• the formation of feet in the base part strengthens the base part to a certain extent and ensures a constant radius of the support area.
• the bottles known from the prior art usually have a flat bottle bottom, in which there is a risk that it bulges outwards, in particular if the internal pressure is increased.
• the feet are separated from each other by relatively long axial indentations of the bottle wall, which extend to the bottom of the bottle. From the support area of the feet, approximately trapezoidal wall parts run obliquely to the bottle bottom, which is axially set back with respect to the support area.
• the size of the indentations is necessary in order to give the bottle base the necessary rigidity so that it cannot bulge out due to the weight and the internal pressure of the bottle contents.
• the indentations take up a relatively large amount of space axially and reduce the area available for labeling. This can lead to difficulties, particularly in the case of plastic bottles, the height of which is defined by standards.
• the high pillars often give consumers little confidence in the stability of the bottle.
• a plastic bottle is to be created which has a sufficiently high stability, in particular tilting stability.
• the space available for labeling should be optimized; In particular, even with less high bottles, for example 0.33 liter bottles with a standardized height, a sufficiently large area should be provided for the application of a label.
• the plastic bottle should have an appealing exterior and inspire confidence in its stability.
• the solution to these problems consists in a plastic bottle, which has the features listed in the characterizing section of claim 1. Further developments and / or advantageous embodiment variants of the invention are the subject of the dependent claims.
• the invention proposes a plastic bottle with a bottle body and an adjoining base part, which comprises a bottle base that closes the bottle and feet that are separated from one another by indentations in the bottle wall, in which the bottle base has a curvature directed into the interior of the bottle and the axial extension of the The indentations separating the base are substantially equal to or smaller than the axial apex height of the curvature of the bottle base.
• the inward curvature of the bottle base gives it sufficient rigidity to withstand the weight of the bottle content and the internal pressure, for example of drinks containing C0 2 , sufficiently.
• the greater rigidity of the bottle base with a comparable wall thickness also makes it possible to make the indentations between the feet less pronounced. It proves to be an appropriate compromise between additional stiffening and the space requirement if the axial extent of the indentations in the bottle wall is equal to or less than the axial apex height of the curvature of the bottle bottom.
• the indentations take up significantly less space than in the case of the plastic bottles of the prior art. This means that a larger, continuous surface is available for labeling the bottle.
• the smaller indentations lead to a more favorable distribution of the pressure load due to the weight of the bottle contents, in particular in the support area of the feet, which has an advantageous effect on the stability of the plastic bottle.
• the curvature of the bottle base is essentially dome-shaped. It has a radius of curvature which is approximately half the radius to approximately twice the contact area of the feet.
• the plastic bottle can have any desired cross section.
• plastic bottles, the base part of which has a regular, preferably circular or also oval cross section, are preferred. As a rule, these have better stability and are usually also cheaper to manufacture.
• the base part has at least five feet, which are each separated from one another by indentations.
• the indentations increase the strength of the base part and increase the area on which the weight of the bottle contents acts.
• the bottle base is provided with reinforcing ribs.
• the reinforcing ribs further increase the rigidity of the bottle base, which is curved inwards.
• the bottle base can be designed with a smaller wall thickness. This has advantages with regard to the weight of the plastic bottle and, because of the reduced material requirement, also has an advantageous effect on the production costs.
• the reinforcing ribs are preferably provided in the area of the feet. Each stand has at least one reinforcing rib which extends from the support area of the stand essentially radially in the direction of the apex of the curvature of the bottle base. Since the reinforcing ribs preferably protrude from the outer wall of the bottle base, no filling volume is lost through the ribs.
• the plastic bottle according to the invention is suitable for production with all common manufacturing methods.
• a mass-technical manufacturing process that is particularly advantageous for reasons of cost and because the bottle parameters are easy to control is the injection stretch blow molding process. Further advantages and features of the invention result from the following description of exemplary embodiments of the drafting system.
• FIG. 1 shows a side view of a plastic bottle according to the invention
• Fig. 3 is a view of the bottom part of an embodiment of the invention.
• FIG. 4 shows a sectional view according to section line IV-IN in FIG. 3.
• FIGS. 1 and 2 show a bottle which has been soaked according to the invention in a general view (FIG. 1) and in a detailed view (FIG. 2).
• the bottle is provided overall with the reference number 1 in FIG. 1.
• It consists of a thermoplastic and can preferably be produced in a stretch blow molding process, in particular in the injection stretch blow molding process ISBM.
• Suitable plastics are all thermoplastic materials customary for the known production processes, for example polyethylene terephthalate (PET).
• the plastic bottle 1 has a bottle body 2, which is equipped with a bottle neck 3 with a pouring opening 4.
• An external thread 5 is provided on the bottle neck 3, for example, which allows the bottle 1 to be closed with a screw cap.
• the floor box 6 comprises a bottle bottom 7 which closes the bottle body 2 and a number of feet 8 which are formed by indentations 9 in the bottle. are separated from each other.
• the plastic bottle 1 corresponds to the bottles of this type known from the prior art.
• the bottle base 7 is arched into the interior of the bottle in the plastic bottle designed according to the invention. This can be seen in particular from the sectional illustration in FIG. 4.
• the curvature of the bottle base 7 is essentially dome-shaped.
• the curvature has a radius of curvature r, which can have approximately half to approximately twice the radius s of the contact area of the feet 8.
• the radius of curvature r of the curvature is approximately 1.2 times larger than the radius s of the contact area.
• the radius of the support area relates to the line of contact of the feet 8 with the subsurface that is furthest from the bottle axis.
• the indentations 9 in the bottle wall have an axial length 1 that is equal to or less than the apex height h of the curvature of the bottle bottom 7.
• the bottom door 6 of the plastic bottle has six feet 8, which are separated from one another by as many indentations 9. As is known, three feet 8 would already be sufficient to enable the bottle to be opened. For reasons of stability, it has been proven by von NorteÜ if at least five feet 8 are provided.
• Each stand 8 has a reinforcement rib 10 which extends from the support area of the stand 8 essentially radially in the direction of the apex of the curvature of the bottle base 7.
• the reinforcement ribs 10 additionally increase the rigidity of the inwardly curved bottle base 7.
• the reinforcing ribs 10 protrude beyond the outside of the flat bottom 7.
• the indentations 9 have an opening width in the contact area of the feet 8, which is, for example, the same or smaller than the width of the feet 8 in this area.
• the indentations 9 of the illustrated embodiment have an extension t measured from the contact area of the feet 8, which is approximately one third of the extent of the bottle base 7 in the radial direction.

Landscapes

• Engineering & Computer Science (AREA)
• Ceramic Engineering (AREA)
• Mechanical Engineering (AREA)
• Containers Having Bodies Formed In One Piece (AREA)
• Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
• Laminated Bodies (AREA)
• Crystals, And After-Treatments Of Crystals (AREA)
• Steroid Compounds (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=29256410

Family Applications (1)

Country Status (7)

Families Citing this family (5)

Family Cites Families (3)

• 2003
  • 2003-02-10 PL PL371793A patent/PL202047B1/pl unknown
  • 2003-02-10 AU AU2003263452A patent/AU2003263452A1/en not_active Abandoned
  • 2003-02-10 AT AT03747090T patent/ATE326392T1/de not_active IP Right Cessation
  • 2003-02-10 WO PCT/EP2003/001278 patent/WO2003091117A1/fr not_active Application Discontinuation
  • 2003-02-10 RU RU2004134351/12A patent/RU2299162C2/ru not_active IP Right Cessation
  • 2003-02-10 DE DE50303371T patent/DE50303371D1/de not_active Expired - Fee Related
  • 2003-02-10 EP EP03747090A patent/EP1497189B1/fr not_active Expired - Lifetime

Non-Patent Citations (1)

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