EP0659652A1 - Récipient avec couvercle pour le confinement répété de matériaux de revêtement liquides - Google Patents

Récipient avec couvercle pour le confinement répété de matériaux de revêtement liquides Download PDF

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Publication number
EP0659652A1
EP0659652A1 EP93120767A EP93120767A EP0659652A1 EP 0659652 A1 EP0659652 A1 EP 0659652A1 EP 93120767 A EP93120767 A EP 93120767A EP 93120767 A EP93120767 A EP 93120767A EP 0659652 A1 EP0659652 A1 EP 0659652A1
Authority
EP
European Patent Office
Prior art keywords
container
coating
container according
outlet valve
lid
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP93120767A
Other languages
German (de)
English (en)
Inventor
Engin Dr. Bagda
Hermann Ackermann
Bernd Günter
Karl-Heinz Bittner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DAW SE
Original Assignee
DAW SE
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 DAW SE filed Critical DAW SE
Priority to EP93120767A priority Critical patent/EP0659652A1/fr
Publication of EP0659652A1 publication Critical patent/EP0659652A1/fr
Withdrawn legal-status Critical Current

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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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings
    • B65D25/16—Loose, or loosely-attached, linings

Definitions

  • the invention relates to a container with a lid for the repeatable reception, transport and removal of liquid coating materials such as emulsion paints or the like, consisting of a supporting container structure made of plastic and / or metal and a detachably adhering to the inner surface of the container wall, Protective layer that is inert to the intended container content and can be renewed as required.
  • liquid coating materials such as emulsion paints or the like
  • Such containers are already known (DE 42 09 042 C1).
  • An important aspect in this context is the easy and complete emptiness of such reusable containers as well as the problem of their environmentally friendly cleaning.
  • the known container mentioned at the beginning is a plastic reusable container, which is protected against damage by friction and contamination by an outer coating which can be removed after use.
  • Such a container advantageously serves as a packaging container for liquids and powders. Containers can easily become soiled externally both during transport and especially when the filling material is removed, or their surface can become unsightly over time due to mechanical influences.
  • the external surface contamination or damage is to be avoided by a special surface coating which is placed on the plastic and consists of an aqueous or aqueous-alcoholic dispersion of polyvinyl acetate and has a thickness of 50 to 500 ⁇ m.
  • a protective layer protects the known plastic containers against external scratching during storage and transportation and against external contamination of the coating film applied to the outer surface of the reusable containers not only offers the advantage of safe surface protection, but also the easy removal of this layer, which can be removed in the event of damage or soiling, without requiring special detergents or similar solutions that create additional disposal problems.
  • plastic surface protection layers are also known which can only be removed with special washing solutions (DE-OS 40 23 909), or also protective layers which - formed as inliners - essentially consist of a bag-like plastic film which is placed in the container and is placed against the inside wall of the container.
  • protective layers which - formed as inliners - essentially consist of a bag-like plastic film which is placed in the container and is placed against the inside wall of the container.
  • the introduction of such protective layers from film bags is relatively cumbersome and time-consuming.
  • the volume of the foil bags cannot always optimally use the volume of the container when it is being filled. Mechanical damage to the film bag has repeatedly given rise to time-consuming additional cleaning of the container in the past.
  • the container receives a different coating along its outer surface than on its inner surface means that its properties can be optimally matched to the different conditions in the inner and outer region, for example optimal heat radiation reflection of the outer coating in order to overheat the container walls by sunlight or the like. to avoid.
  • a surface that is as smooth as possible is desirable for the outer coating because of its good cleanability, while the inner coating must be inert to the intended filling material in every respect.
  • the outer layer is advantageously made transparent in order to make prints on the outer walls of the container visible, while it is advantageous for the inner coating if color is used here, so that when the inner layer is detached, it is easy to see optically whether residues of the protective layer to be removed are still left on the container wall - for example in corners or other inaccessible places.
  • the container When designing the container, its particularly good handling and volume utilization for transport purposes are important and must be taken into account. For the containers of interest here, dimensions with a capacity of 500 l, for example, with base dimensions of 70 x 120 cm, for example, are particularly advantageous. Length, width and height dimensions of the container are based on the European standard for palletizing the containers.
  • the container which is essentially rectangular in cross-section, tapers slightly along its walls from the lid to the bottom, so that the two longitudinal cuts perpendicular to one another each give a trapezoidal shape.
  • the container has a multi-inclined base plate with a slope to the outlet valve, so that residue-free emptying is possible.
  • the non-water-soluble outer coating of the container is essential, the insolubility in rainwater and the like. relates, i.e. not to water under pressure or elevated temperature. With the latter, the outer layer can rather be removed in an environmentally friendly manner, it being particularly advantageous to design the outer layer in such a way that it can to a certain extent be peeled off with pressurized water even at normal room temperatures.
  • the completely different composition of the inner coating of the container is also applied by means of a spray process, so that a liquid film is first created, the thickness of which is advantageously between 0.3 and 0.5 mm, based on the wet film, under normal environmental conditions.
  • both wet films can optionally be subjected to drying together. It is essential to the invention in this connection that the coatings are designed in such a way that the inner coating can be easily removed and removed after each single use of the container and should be removed, while the outer layer can be subjected to cleaning 10 to 20 times.
  • outlet valve of the container is inserted or embedded in its contour dimensioning so that it does not protrude from its dimensions and thus damage - especially during transport - can be avoided while at the same time requiring minimal space for palletizing the container in addition - and stacking.
  • a so-called object or construction site-related container for holding 500 l of emulsion paint is schematically drawn.
  • the characteristics of the fundamentally different surface coatings of the container in the outer, exposed area on the one hand and in the inner coating associated with the container filling - here emulsion paint - on the other hand are explained below.
  • the outer surface coating must be able to be cleaned repeatedly as often as possible, but in addition to its non-washable properties under normal conditions, it should also be transparent so that graffiti coatings applied to the outer container surface, which provide information about the manufacturer, content and the like, provide technical data are visible.
  • the outer surface coating must be as insensitive as possible to abrasion and normal mechanical stress, and common contaminants must not stick to it, even if it is simply sprayed with tap water. In the event that such a container, particularly made of steel, is exposed to solar radiation for a long time, the surface coating must additionally have the property of good reflection of the thermal radiation.
  • the outer coating is in Formed as an aqueous coating solution, the main components of which are paraffin wax and polyethylene waxes.
  • the application is carried out by spraying, a wet film thickness of between 30 and 100 ⁇ being produced.
  • a filler-free coating can be cleaned under normal environmental conditions up to 20 times by water purification, without the outer coating having to be renewed.
  • pressurized water up to about 120 bar in order to separate it from the container surface to a certain extent without it going into solution.
  • the inner coating of the container which is exposed to completely different conditions, consists of a 50 to 90% copolymer dispersion, the basic components of which are acetate and polyethylene.
  • Another component of the special composition is a wax emulsion with a percentage between approx. 3 and 10%.
  • an emulsifier is added to the dispersion in a percentage of 0.2 to 1%.
  • a component of this copolymer dispersion is a high molecular weight cellulose derivative in a proportion of 0.2 to 0.5% and 0.1 to 0.6% of a stabilizer, preferably a polyphosphate.
  • This copolymer dispersion is sprayed onto the inner wall of the container in a thickness between 0.3 and 0.5 mm, whereupon the wet film is then dried. After the container has been emptied once, the inner layer, which has been applied solvent-free, is washed together with the mostly dried-on residues by means of a special washing solution As intended, emulsion paint previously absorbed by the container is removed.
  • the container which is a construction site-related container for emulsion paints, can be seen in detail from FIGS. 1 to 3. Accordingly, the container has an outer rectangular shape with a footprint of 70 x 120 cm.
  • the cuboid shape is particularly advantageous because of its good handling, stackability and minimal use of storage and transport space.
  • the walls 1 of the container consist of 2 mm thick stainless steel sheet, with their vertically running edges 15 being rounded.
  • the cover 8 of the container which is only indicated, is shaped like its base from 1.5 mm thick steel sheet.
  • the design of the floor according to the invention can be seen particularly clearly from FIGS. 1 and 2. Accordingly, it is composed of several differently inclined sections, a central recess for the outlet valve 10 being provided in the region of an end face 1, which - as shown - lies outside the fillable container volume, but within the container dimension.
  • the bottom of the container is composed of the following surfaces: a triangular surface 6, which is symmetrical to the longitudinal axis, is in the form of an acute-angled, isosceles triangle and - from the end face opposite the outlet valve 10 - is inclined by 4 ° to the outlet valve 10, the tip 11 lies directly at the opening of the outlet valve 10.
  • This triangular surface 6 adjoins right and left up to the longitudinal walls of the container at right-angled triangular surfaces 7, which are welded to the longitudinal walls 1 - running horizontally there - in order to drop off from there to the leg edges 16 of the isosceles triangular surface 6.
  • these right-angled triangular surfaces 7 end in alignment with the tip 11 and here form the edge 18, from which a vertical wall section 2 extends beyond the valve body of the outlet valve 10, the recess in the tank bottom begins, which is intended for the valve seat.
  • the vertical wall section 2 (see Fig. 1) then merges above the outlet valve 10 into a 25 ° inclined section 23 which is welded to the side wall 1 of the container.
  • the individual subsections 6, 7, 2 and 3 of the container bottom are connected to one another by welding along their seam edges and the container walls. This construction of the container bottom 6, 7, 2, 3 is designed so that its lowest point is in the area of the tip 11, that is to say where the outlet opening 9 of the outlet valve 10 lies.
  • the walls 2 and 3 can run with the cross section shown in FIG. 1 over the entire front width of the container, but it is also conceivable that the recess consisting of these walls, the outlet valve 10 receiving in the center in the longitudinal axis of the container with a correspondingly inclined Floor areas only above or around the valve.
  • the lid 8 of the container not shown, has a closable ventilation opening.
  • the lid covering the container opening is provided with a foam rubber seal and is not foldable, but can be removed completely to put on the upper edge of the container.
  • the lid also contains an external U-profile stiffener, which is supported in the transverse direction on the narrow side.
  • FIGS. 4a to 4c show a top view and side views of the container base, which is designed in the form of a Euro pallet, but like the container itself is also made of steel.
  • the long sides 20 of the container base are provided with a ram protection 21 and thus or the like against impact damage. reinforced.
  • the ram protection 21 on both sides is dimensioned such that the length / width dimensions of the upper cover with the outer dimensions of the lower steel frame 21, 22 together with the ram protection 21 are the same or correspond to one another.
  • the pallet forms the container base frame and consists essentially of the steel frame 20, 22 of rectangular profile, into which the lower peripheral edge of the container can be inserted and there via screws 26 or the like. can be screwed detachably. Characterized in that the longitudinal walls as well as the end walls of the container are inclined slightly inwards in the downward direction, that is to say in cross section in each case specify a trapezoidal shape, the area specified by the steel frame is smaller than the upper cover area. Together with the ram protection 21 on the longitudinal side, however, it corresponds again to the cover surface.
  • the rectangular pallet frame is provided at the four corners with steel feet 23, which are welded on and again rectangular in cross section.
  • the container on the pallet or its base frame can be handled easily and safely by means of a forklift.
  • the steel pallet is an integral part of the container, but can be easily replaced in the event of damage by the screw connections mentioned, which also applies to the screw-off outlet valve on the container.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
EP93120767A 1993-12-23 1993-12-23 Récipient avec couvercle pour le confinement répété de matériaux de revêtement liquides Withdrawn EP0659652A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93120767A EP0659652A1 (fr) 1993-12-23 1993-12-23 Récipient avec couvercle pour le confinement répété de matériaux de revêtement liquides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93120767A EP0659652A1 (fr) 1993-12-23 1993-12-23 Récipient avec couvercle pour le confinement répété de matériaux de revêtement liquides

Publications (1)

Publication Number Publication Date
EP0659652A1 true EP0659652A1 (fr) 1995-06-28

Family

ID=8213522

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93120767A Withdrawn EP0659652A1 (fr) 1993-12-23 1993-12-23 Récipient avec couvercle pour le confinement répété de matériaux de revêtement liquides

Country Status (1)

Country Link
EP (1) EP0659652A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006021783A3 (fr) * 2004-08-25 2006-06-15 Conserve Corp Plc Reservoir
EP2098458A1 (fr) * 2008-03-03 2009-09-09 Superfos a/s Conteneur comprenant une doublure interne, procédé d'application d'une telle doublure sur un conteneur et utilisation d'un revêtement pelable en tant que doublure interne dans un conteneur
WO2013087385A1 (fr) * 2011-12-13 2013-06-20 Unilever N.V. Produit emballé dans un récipient comportant un revêtement antiadhésif sur la paroi intérieure
US8646641B2 (en) 2008-07-21 2014-02-11 Swire Oilfield Services Limited Storage tank for fluids
US9604252B2 (en) 2013-05-20 2017-03-28 Conopco, Inc. Process for coating containers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3468451A (en) * 1968-04-01 1969-09-23 Clarence B Coleman Container with disposable liner
US4782973A (en) * 1987-06-16 1988-11-08 Custom Metalcraft, Inc. Cushion bottom tank
DE4023909A1 (de) * 1990-07-27 1992-01-30 Wild Rudolf Gmbh & Co Wiederverwendbarer behaelter aus kunststoff sowie seine herstellung und verwendung
DE4302613A1 (en) * 1992-02-07 1993-08-12 Klaus Leukel Reusable plastic or metal container - has blow moulded cover of desired shape with sprayed on lining of resistant polymer which can be stripped off so that cover may be reused
DE4209042C1 (en) * 1992-03-20 1993-09-16 Chemische Werke Kluthe Gmbh & Co, 6900 Heidelberg, De Reusable coated plastic container for protection against abrasion and soiling - has easily stripped coating prepd. from dispersion of aq. polyvinyl acetate, emulsifier, stabiliser, plasticiser, release agent, wetting agent and water or aq. alcohol

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3468451A (en) * 1968-04-01 1969-09-23 Clarence B Coleman Container with disposable liner
US4782973A (en) * 1987-06-16 1988-11-08 Custom Metalcraft, Inc. Cushion bottom tank
DE4023909A1 (de) * 1990-07-27 1992-01-30 Wild Rudolf Gmbh & Co Wiederverwendbarer behaelter aus kunststoff sowie seine herstellung und verwendung
DE4302613A1 (en) * 1992-02-07 1993-08-12 Klaus Leukel Reusable plastic or metal container - has blow moulded cover of desired shape with sprayed on lining of resistant polymer which can be stripped off so that cover may be reused
DE4209042C1 (en) * 1992-03-20 1993-09-16 Chemische Werke Kluthe Gmbh & Co, 6900 Heidelberg, De Reusable coated plastic container for protection against abrasion and soiling - has easily stripped coating prepd. from dispersion of aq. polyvinyl acetate, emulsifier, stabiliser, plasticiser, release agent, wetting agent and water or aq. alcohol

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006021783A3 (fr) * 2004-08-25 2006-06-15 Conserve Corp Plc Reservoir
EP2098458A1 (fr) * 2008-03-03 2009-09-09 Superfos a/s Conteneur comprenant une doublure interne, procédé d'application d'une telle doublure sur un conteneur et utilisation d'un revêtement pelable en tant que doublure interne dans un conteneur
WO2009109234A1 (fr) * 2008-03-03 2009-09-11 Superfos A/S Récipient comprenant une doublure interne, procédé d'application d'une telle doublure à un récipient, et utilisation d'un revêtement pelable comme doublure interne dans un récipient
AU2008352314B2 (en) * 2008-03-03 2013-11-21 Superfos A/S Container comprising an inner lining, a method of applying such a lining to a container and use of a peel-able coating as an inner lining in a container
AU2008352314C1 (en) * 2008-03-03 2014-04-17 Superfos A/S Container comprising an inner lining, a method of applying such a lining to a container and use of a peel-able coating as an inner lining in a container
US8708180B2 (en) 2008-03-03 2014-04-29 Superfos A/S Container comprising an inner lining, a method of applying such a lining to a container and use of a peelable coating as an inner lining in a container
US8646641B2 (en) 2008-07-21 2014-02-11 Swire Oilfield Services Limited Storage tank for fluids
WO2013087385A1 (fr) * 2011-12-13 2013-06-20 Unilever N.V. Produit emballé dans un récipient comportant un revêtement antiadhésif sur la paroi intérieure
US9604252B2 (en) 2013-05-20 2017-03-28 Conopco, Inc. Process for coating containers

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