US2964176A - Packaging container and process of packaging materials - Google Patents

Packaging container and process of packaging materials Download PDF

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Publication number
US2964176A
US2964176A US836319A US83631959A US2964176A US 2964176 A US2964176 A US 2964176A US 836319 A US836319 A US 836319A US 83631959 A US83631959 A US 83631959A US 2964176 A US2964176 A US 2964176A
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United States
Prior art keywords
packaging
container
hot
polypropylene
materials
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Expired - Lifetime
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US836319A
Inventor
Herrmann Frank
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Kunststoffwerk Lahr GmbH
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Kunststoffwerk Lahr GmbH
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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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for

Definitions

  • the present invention relates to a packaging container for filling up and packaging solid, meltable products which are sticky when molten, and more particularly, to such a packaging container made from polypropylene and to a process of filling up and packaging such materials into said containers.
  • Another object of the present invention is to provide a process of filling up and packaging solid, meltable products which are sticky when molten and which are to be packaged when hot.
  • polypropylene is very well suited for packaging containers for materials which are to be packaged while hot. Unexpectedly, polypropylene does not consolidate with hot bitumen or paraifins and can be stripped from the cooled bitumen or parafiin without difficulty which fact is all the more surprising as polyethylene cannot be used for these purposes.
  • packaging containers for the pur- 1 poses of the present invention, packaging containers, for
  • bags of a suitable material such as paper bags, may be used, the inner surface of which is lined with polypropylene foils.
  • the solid, meltable products which are sticky when hot and molten are filled up and packaged in containers of polypropylene, preferably polypropylene bags in the hot and molten state.
  • the packaging of the hot materials according to the present invention is preferably carried out in such manner that during the filling process the preformed container of polypropylene is supported in a correspondingly shaped rigid container, for example of metal sheet.
  • a frame of a suitable material for instance metal sheet or plastic, may be placed into the opening of the bag-like container in order to suspend it, reinforce its upper edge and keep it open while pouring the hot and liquid material to be packaged.
  • the frame-like reinforcement is removed and the filled polypropylene container is removed from the supporting container of metal sheet.
  • propylene films or foils of wall thickness of from 0.03 to 0.05 mm. it is possible to package bitumen in this way in amounts of 30 kg. in weight for instance without difliculty.
  • the polypropylene packaging containers are of various colours so as to distinguish different qualities of the packed material.
  • Packaging containers for packaging solid, meltable products which are sticky when hot and molten, in the hot and molten state consisting of polypropylene.
  • Packaging containers for packaging solid, meltable products which are sticky when hot and molten, in the hot and molten state consisting of a polypropylene bag.
  • a package of a solid meltable product which is sticky when hot and molten comprising said product and a container for said product, said container consisting of polypropylene foils.
  • a package of bitumen comprising bitumen and a container for the bitumen, said container consisting of polypropylene foils.
  • a package of high melting point parafiine comprising high melting point paraffine and a container for said high melting point parafiine, said container consisting of polypropylene foils.

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

Description

PACKAGING CONTAINER AND PROCESS OF PACKAGING MATERIALS Frank Herrmann, Lahr, Schwarzwald, Germany, assignor to Kunststolfwerk Lahr G.m.b.H., Lahr, Dinglingen, Schwarzwald, Germany No Drawing. Filed Aug. 27, 1959, Ser. No. 836,319
Claims priority, application Germany Sept. 4, 1958 7 Claims. (Cl. 206-84) The present invention relates to a packaging container for filling up and packaging solid, meltable products which are sticky when molten, and more particularly, to such a packaging container made from polypropylene and to a process of filling up and packaging such materials into said containers.
In several technical fields it is necessary to pour hot liquid materials, for instance bitumen or high melting point paratfins, for storage or shipping purposes into containers. Up to the present, such materials have generally been put into sheet metal containers. These sheet metal containers are stable. However, it is difficult to get the materials out of such containers again, as they adhere to the sheet metal even in the heated and molten state. For this reason, jute sacks impregnated with alginates and calcium chloride have also been used for packaging such materials. Packaging containers of this latter kind are, however, relatively expensive. Attempts have also been made to use plastics and paper for packaging such materials. However, many of these packaging materials are practically useless for this purpose because they are too sensitive to heat. On the other hand, the hot liquid materials which are to be packed are inclined to adhere to those plastics which are sufiiciently heat-resistant.
Therefore, it is one object of the present invention to provide a packaging container for filling up and packaging solid, meltable products which are sticky when molten and which are to be packaged when hot, which container may readily be removed from the packaged material.
Another object of the present invention is to provide a process of filling up and packaging solid, meltable products which are sticky when molten and which are to be packaged when hot. Other objects of the present invention and advantageous features thereof will become apparent as the description proceeds.
It has been found that polypropylene is very well suited for packaging containers for materials which are to be packaged while hot. Unexpectedly, polypropylene does not consolidate with hot bitumen or paraifins and can be stripped from the cooled bitumen or parafiin without difficulty which fact is all the more surprising as polyethylene cannot be used for these purposes. For the pur- 1 poses of the present invention, packaging containers, for
instance bags of a suitable material such as paper bags, may be used, the inner surface of which is lined with polypropylene foils.
In the process according to the present invention the solid, meltable products which are sticky when hot and molten are filled up and packaged in containers of polypropylene, preferably polypropylene bags in the hot and molten state.
?atented Dec. 33, 1960 The packaging of the hot materials according to the present invention is preferably carried out in such manner that during the filling process the preformed container of polypropylene is supported in a correspondingly shaped rigid container, for example of metal sheet. If desired, a frame of a suitable material, for instance metal sheet or plastic, may be placed into the opening of the bag-like container in order to suspend it, reinforce its upper edge and keep it open while pouring the hot and liquid material to be packaged. After the hot material has been poured into the polypropylene container and has cooled, the frame-like reinforcement is removed and the filled polypropylene container is removed from the supporting container of metal sheet. When using propylene films or foils of wall thickness of from 0.03 to 0.05 mm. it is possible to package bitumen in this way in amounts of 30 kg. in weight for instance without difliculty.
According to another embodiment of this invention the polypropylene packaging containers are of various colours so as to distinguish different qualities of the packed material.
What I claim is:
1. Packaging containers for packaging solid, meltable products which are sticky when hot and molten, in the hot and molten state, said containers consisting of polypropylene.
2. Packaging containers for packaging solid, meltable products which are sticky when hot and molten, in the hot and molten state, said containers consisting of a polypropylene bag.
3. Process of filling up and packaging solid, meltable products which are sticky when hot and molten, the steps which comprise melting said products, pouring them into bags of polypropylene foils placed into a removable rigid correspondingly shaped container, cooling down the products, and removing the rigid container.
4. Process of filling up and packaging solid, meltable products which are sticky when hot and molten, the steps which comprise melting said products, pouring them into bags of polypropylene foils placed into a removable rigid correspondingly shaped container and suspended and reinforced at the opening by a rigid frame placed removably in the opening of the bag, cooling down said products, and removing the rigid frame and container.
5. A package of a solid meltable product which is sticky when hot and molten comprising said product and a container for said product, said container consisting of polypropylene foils.
6. A package of bitumen comprising bitumen and a container for the bitumen, said container consisting of polypropylene foils.
7. A package of high melting point parafiine comprising high melting point paraffine and a container for said high melting point parafiine, said container consisting of polypropylene foils.
References Cited in the file of this patent UNITED STATES PATENTS 2,348,622 Heilm-an May 9, 1944 2,804,205 Barton et a1 Aug. 27, 1957 2,834,768 Friedlander May 13, 1958 2,840,551 Field et al. June 24, 1958

Claims (1)

  1. 5. A PACKAGE OF A SOLID METABLE PRODUCT WHICH STICKY WHEN HOT AND MOLTEN COMPRISING SAID PRODUCT AND A CONTAINER FOR SAID PRODUCT, SAID CONTAINER CONSISTING OF POLYPROPYLENE FOILS.
US836319A 1958-09-04 1959-08-27 Packaging container and process of packaging materials Expired - Lifetime US2964176A (en)

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DE2964176X 1958-09-04

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3421679A (en) * 1967-06-28 1969-01-14 Logisties Ind Corp Compartmentalized container
US4306657A (en) * 1974-02-12 1981-12-22 Giorgio Levy System for metering and film packaging of bitumen and like materials
US5452800A (en) * 1991-04-08 1995-09-26 Petro Source Refining Partners Roofing asphalt packaging and method
US5682758A (en) * 1994-05-10 1997-11-04 Petro Source Refining Partners Method and apparatus for cooling asphalt
US5733616A (en) * 1995-06-07 1998-03-31 Owens-Corning Fiberglas Technology, Inc. Consumable asphalt containers and method of reducing fumes from a kettle of molten asphalt

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348622A (en) * 1941-10-29 1944-05-09 Standard Oil Dev Co Removable liner for viscous material containers
US2804205A (en) * 1955-11-21 1957-08-27 Crown Zellerbach Corp Container for packaging tacky materials
US2834768A (en) * 1955-08-18 1958-05-13 Standard Oil Co Catalytic polymerization of alkenes to normally solid polymers
US2840551A (en) * 1955-08-18 1958-06-24 Standard Oil Co Olefin polymerization with catalysts prepared from boron compounds and transition metal compounds

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348622A (en) * 1941-10-29 1944-05-09 Standard Oil Dev Co Removable liner for viscous material containers
US2834768A (en) * 1955-08-18 1958-05-13 Standard Oil Co Catalytic polymerization of alkenes to normally solid polymers
US2840551A (en) * 1955-08-18 1958-06-24 Standard Oil Co Olefin polymerization with catalysts prepared from boron compounds and transition metal compounds
US2804205A (en) * 1955-11-21 1957-08-27 Crown Zellerbach Corp Container for packaging tacky materials

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3421679A (en) * 1967-06-28 1969-01-14 Logisties Ind Corp Compartmentalized container
US4306657A (en) * 1974-02-12 1981-12-22 Giorgio Levy System for metering and film packaging of bitumen and like materials
US5452800A (en) * 1991-04-08 1995-09-26 Petro Source Refining Partners Roofing asphalt packaging and method
US5682758A (en) * 1994-05-10 1997-11-04 Petro Source Refining Partners Method and apparatus for cooling asphalt
US5733616A (en) * 1995-06-07 1998-03-31 Owens-Corning Fiberglas Technology, Inc. Consumable asphalt containers and method of reducing fumes from a kettle of molten asphalt

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