EP0700833A1 - Package for hot-melt adhesives and method of production thereof - Google Patents

Package for hot-melt adhesives and method of production thereof Download PDF

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Publication number
EP0700833A1
EP0700833A1 EP95830010A EP95830010A EP0700833A1 EP 0700833 A1 EP0700833 A1 EP 0700833A1 EP 95830010 A EP95830010 A EP 95830010A EP 95830010 A EP95830010 A EP 95830010A EP 0700833 A1 EP0700833 A1 EP 0700833A1
Authority
EP
European Patent Office
Prior art keywords
package
hot
sheet
production
silicon
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Withdrawn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
EP95830010A
Other languages
German (de)
French (fr)
Inventor
Paolo Taveggia
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.)
ALUCART Srl
Original Assignee
ALUCART Srl
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 ALUCART Srl filed Critical ALUCART Srl
Publication of EP0700833A1 publication Critical patent/EP0700833A1/en
Withdrawn legal-status Critical Current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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/56—Linings or internal coatings, e.g. pre-formed trays provided with a blow- or thermoformed layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/59—Shaping sheet material under pressure
    • B31B50/592—Shaping sheet material under pressure using punches or dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/0077—Shaping by methods analogous to moulding, e.g. deep drawing techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2100/00—Rigid or semi-rigid containers made by folding single-piece sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2110/00—Shape of rigid or semi-rigid containers
    • B31B2110/30—Shape of rigid or semi-rigid containers having a polygonal cross section
    • B31B2110/35—Shape of rigid or semi-rigid containers having a polygonal cross section rectangular, e.g. square
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/70—Construction of rigid or semi-rigid containers having corrugated or pleated walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/44—Folding sheets, blanks or webs by plungers moving through folding dies

Definitions

  • the present invention relates to the packaging of hot-melt adhesives, of the pressure-sensitive type, and in particular to a substantially prismatic container obtained by drawing a sheet of silicon-coated paper.
  • hot-melt pressure-sensitive adhesives reach the packaging step in the melt state and they are poured into packages of silicon-coated paper at a temperature of about 200°C, which common package glues can not withstand.
  • the presently used packages consist of parallelepipeds obtained by dinking and embossing sheets of silicon-coated paper, which are then manually folded to form the packages.
  • the use of this type of paper is made necessary by the stickiness of this type of adhesives.
  • Each of these packages is then inserted into a cell of a containment grid positioned into a box. Since standard boxes include 12 adhesive packages of 1 kg each or 24 packages of 1 ⁇ 2 kg each, the intensive labour required by the manual folding of these packages is apparent. Moreover, a possible mechanical folding would be achievable only by means of a quite expensive apparatus, due to the fairly complicated folding sequence.
  • the object of the present invention is to provide a type of package suitable for hot-melt pressure-sensitive adhesives which does not require labour for its production, as well as a method for the production of this type of package.
  • the first apparent advantage of the package and method of the present invention is the significant saving of time and/or costs resulting from the elimination of the manual or mechanical package folding process, since the package according to the present invention is ready for use as it comes out of the production plant.
  • a second advantage stems from the fact that the embossing step of the sheets of silicon-coated paper is eliminated from the method of the invention, since dinking is immediately followed by drawing.
  • a further advantage of the present package is that it is much easier to be handled when empty since it does not risk to come undone like folded packages, its shape being the result of a permanent bending.
  • a sheet 1 of silicon-coated paper which is drawn by a mould made up of an upper male part 2 reciprocating vertically according to arrow A, carried by stem 3, and pressing said sheet 1 inside a lower female part 4.
  • the male part 2 includes an outer member 5 abutting on the plane of the female part 4, whereas a central punch 6 continues the downward run and enters a die 7.
  • the latter also includes a peripheral groove 8 into which sheet 1 is pressed by the edge of punch 6 in order to obtain an upper peripheral lip, which gives greater structural stiffness to the package.
  • mould temperature included between 140°C and 170°C, so that sheet 1 retains the shape given thereto by said mould, which is heated by proper means, e.g. by built-in electric resistors (not shown).
  • the mould is preferably provided with a control system (not shown) controlling the operating temperature and/or pressure according to the thickness of the sheet 1 to be drawn.
  • a square package 9 according to the present invention has an upper peripheral lip 10, as mentioned above, and "bellow" pleats 11 at the corners. These pleats 11 result from the drawing process of a square sheet with rounded angles, and they allow to open and flatten the package for taking out the adhesive which, when solidifying upon cooling, tends to stick to the package sides.
  • the plan views of the female part 4 and male part 2 of the mould show the engravings 12, on the female part 4, and the engravings 12' complementary thereto, on the male part 2, which cooperate in forming the corner pleats 11.
  • the square shape of the above-illustrated package is merely an example, since the shape and size of the package according to the present invention can be freely adapted to the specific needs of the user.
  • the method of the present invention provides for a smaller waste, since it is only required to round off the angles of a regular shape (square, rectangular, etc.).
  • prior art packages require shapes with projecting portions which imply a higher waste.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Package Closures (AREA)
  • Laminated Bodies (AREA)
  • Making Paper Articles (AREA)

Abstract

A package for hot-melt adhesives consisting in a pre-shaped prismatic container (1), obtained by hot-drawing (140-170°C) of a sheet of silicon-coated paper by means of a heated mould (6).

Description

  • The present invention relates to the packaging of hot-melt adhesives, of the pressure-sensitive type, and in particular to a substantially prismatic container obtained by drawing a sheet of silicon-coated paper.
  • It is known that hot-melt pressure-sensitive adhesives reach the packaging step in the melt state and they are poured into packages of silicon-coated paper at a temperature of about 200°C, which common package glues can not withstand.
  • Owing to this reason, the presently used packages consist of parallelepipeds obtained by dinking and embossing sheets of silicon-coated paper, which are then manually folded to form the packages. The use of this type of paper is made necessary by the stickiness of this type of adhesives. Each of these packages is then inserted into a cell of a containment grid positioned into a box. Since standard boxes include 12 adhesive packages of 1 kg each or 24 packages of ½ kg each, the intensive labour required by the manual folding of these packages is apparent. Moreover, a possible mechanical folding would be achievable only by means of a quite expensive apparatus, due to the fairly complicated folding sequence.
  • In the light of the above, the waste of time required by the manual folding, as well as the difficulty in mechanizing the folding process are clear.
  • Therefore, the object of the present invention is to provide a type of package suitable for hot-melt pressure-sensitive adhesives which does not require labour for its production, as well as a method for the production of this type of package.
  • This object is achieved by means of a package for hot-melt pressure-sensitive adhesives having the characteristics cited in claim 1. The relevant method of production is characterized by the steps cited in claim 2.
  • The first apparent advantage of the package and method of the present invention is the significant saving of time and/or costs resulting from the elimination of the manual or mechanical package folding process, since the package according to the present invention is ready for use as it comes out of the production plant.
  • A second advantage stems from the fact that the embossing step of the sheets of silicon-coated paper is eliminated from the method of the invention, since dinking is immediately followed by drawing.
  • A further advantage of the present package is that it is much easier to be handled when empty since it does not risk to come undone like folded packages, its shape being the result of a permanent bending.
  • These and other advantages and characteristics of the package according to the present invention and of the relevant method of production will be apparent from the following detailed description of a preferred embodiment thereof, reported as a non-limiting example, referring to the annexed drawings wherein:
    • Fig.1 is a side sectional view of the mould, at the end of the drawing process of the sheet of silicon-coated paper;
    • Fig.2 is a perspective view of a package according to the present invention;
    • Fig.3 is a top plan view of the lower part of the mould; and
    • Fig.4 is a bottom plan view of the upper part of the mould.
  • Referring to fig.1, there is seen a sheet 1 of silicon-coated paper which is drawn by a mould made up of an upper male part 2 reciprocating vertically according to arrow A, carried by stem 3, and pressing said sheet 1 inside a lower female part 4. The male part 2 includes an outer member 5 abutting on the plane of the female part 4, whereas a central punch 6 continues the downward run and enters a die 7. The latter also includes a peripheral groove 8 into which sheet 1 is pressed by the edge of punch 6 in order to obtain an upper peripheral lip, which gives greater structural stiffness to the package.
  • This process takes place at a mould temperature included between 140°C and 170°C, so that sheet 1 retains the shape given thereto by said mould, which is heated by proper means, e.g. by built-in electric resistors (not shown). In this regard, it should be noted that the mould is preferably provided with a control system (not shown) controlling the operating temperature and/or pressure according to the thickness of the sheet 1 to be drawn.
  • Referring to fig.2, there is seen that a square package 9 according to the present invention has an upper peripheral lip 10, as mentioned above, and "bellow" pleats 11 at the corners. These pleats 11 result from the drawing process of a square sheet with rounded angles, and they allow to open and flatten the package for taking out the adhesive which, when solidifying upon cooling, tends to stick to the package sides.
  • Referring finally to figs.3 and 4, the plan views of the female part 4 and male part 2 of the mould show the engravings 12, on the female part 4, and the engravings 12' complementary thereto, on the male part 2, which cooperate in forming the corner pleats 11.
  • Clearly, the square shape of the above-illustrated package is merely an example, since the shape and size of the package according to the present invention can be freely adapted to the specific needs of the user.
  • It should also be noted that during the dinking step of the sheets of silicon-coated paper, the method of the present invention provides for a smaller waste, since it is only required to round off the angles of a regular shape (square, rectangular, etc.). On the contrary, prior art packages require shapes with projecting portions which imply a higher waste.
  • Therefore, possible additions and/or modifications may be made to the package of the present invention and to the relevant method of production, particularly with regard to the shape of the package and of the corresponding mould, yet without departing from the scope of protection of the invention.

Claims (3)

  1. A package for hot-melt adhesives characterized in that it consists of a pre-shaped prism (7) of silicon-coated paper.
  2. A method of production of the package according to claim 1, including dinking of a sheet (1) of silicon-coated paper, characterized in that it further includes hot-drawing of said dinked sheet (1) by means of a heated mould made up of a female part (4) and a male part (2).
  3. A method according to claim 2, characterized in that it includes adjusting, by means of a control system, the mould temperature and/or pressure according to the thickness of the sheet (1) to be drawn.
EP95830010A 1994-01-19 1995-01-17 Package for hot-melt adhesives and method of production thereof Withdrawn EP0700833A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT94MI000064A ITMI940064A1 (en) 1994-01-19 1994-01-19 PACKAGING FOR THERMAL FUSE ADHESIVES AND ITS PRODUCTION METHOD.
ITMI940064 1994-01-19

Publications (1)

Publication Number Publication Date
EP0700833A1 true EP0700833A1 (en) 1996-03-13

Family

ID=11367548

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95830010A Withdrawn EP0700833A1 (en) 1994-01-19 1995-01-17 Package for hot-melt adhesives and method of production thereof

Country Status (2)

Country Link
EP (1) EP0700833A1 (en)
IT (1) ITMI940064A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2364952A (en) * 2000-05-11 2002-02-13 Hirano Shiki Co Ltd A paper mould
ES2187217A1 (en) * 1999-01-13 2003-05-16 Innovaciones Mecanicas Campoll Machine is for adjustment by insertion of capsules of biscuits, butter-cakes and similar and comprises female piece fixed to support and adjacent male piece displaceable vertically, both parts having quadrangular section
WO2004078448A1 (en) * 2003-03-05 2004-09-16 Henkel Kommanditgesellschaft Auf Aktien Method for producing a portion package made of a thermoplastic material in a casting mold made of a silicone elastomer obtained by a platinum cross-linking process
EP2829482A1 (en) * 2013-07-24 2015-01-28 Pester Pac Automation GmbH Process for three-dimensional forming of flat material
EP2829392A1 (en) * 2013-07-24 2015-01-28 Pester Pac Automation GmbH Apparatus for shaping a flat material
JP2020163732A (en) * 2019-03-29 2020-10-08 東洋アルミエコープロダクツ株式会社 Method for producing container and blank

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1420808A (en) * 1918-11-07 1922-06-27 Charles S Batdorf Machine for making paper cups
US1553504A (en) * 1923-01-30 1925-09-15 Peter F Buchanan Cup-making machine
US1904268A (en) * 1932-03-08 1933-04-18 Fred L Bronson Method for the manufacture of formed articles
US2997927A (en) * 1959-02-09 1961-08-29 Peerless Machine & Tool Co Inc Formed paper dish and method for making same
US3318748A (en) * 1963-04-24 1967-05-09 Morton Salt Co Method of forming a laminate paper plate
FR2250679A1 (en) * 1973-11-10 1975-06-06 Waldhof Aschaffenburg Papier Open top container for pastes - corners of blank fold in half and are locked to side walls
EP0091754A1 (en) * 1982-04-01 1983-10-19 International Paper Company Apparatus and method for manufacturing ovenable paperboard articles
FR2544654A1 (en) * 1983-04-21 1984-10-26 Keller Dorian Papiers Method and means for packaging a solid or pasty product possessing an adhesive power and novel product obtained
EP0245005A2 (en) * 1986-05-07 1987-11-11 International Paper Company Ovenable paperboard food tray
FR2645840A3 (en) * 1989-04-14 1990-10-19 Wellpappenfabrik Gmbh Trough/board for collecting corrosive liquids
FR2651720A1 (en) * 1989-09-13 1991-03-15 Sireix Method for manufacturing cardboard packaging and product obtained by this method
JPH06239380A (en) * 1993-02-10 1994-08-30 Kanebo Nsc Ltd Sealed bag containing hot-melt adhesive of urethane resin and method for manufacture

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1420808A (en) * 1918-11-07 1922-06-27 Charles S Batdorf Machine for making paper cups
US1553504A (en) * 1923-01-30 1925-09-15 Peter F Buchanan Cup-making machine
US1904268A (en) * 1932-03-08 1933-04-18 Fred L Bronson Method for the manufacture of formed articles
US2997927A (en) * 1959-02-09 1961-08-29 Peerless Machine & Tool Co Inc Formed paper dish and method for making same
US3318748A (en) * 1963-04-24 1967-05-09 Morton Salt Co Method of forming a laminate paper plate
FR2250679A1 (en) * 1973-11-10 1975-06-06 Waldhof Aschaffenburg Papier Open top container for pastes - corners of blank fold in half and are locked to side walls
EP0091754A1 (en) * 1982-04-01 1983-10-19 International Paper Company Apparatus and method for manufacturing ovenable paperboard articles
FR2544654A1 (en) * 1983-04-21 1984-10-26 Keller Dorian Papiers Method and means for packaging a solid or pasty product possessing an adhesive power and novel product obtained
EP0245005A2 (en) * 1986-05-07 1987-11-11 International Paper Company Ovenable paperboard food tray
FR2645840A3 (en) * 1989-04-14 1990-10-19 Wellpappenfabrik Gmbh Trough/board for collecting corrosive liquids
FR2651720A1 (en) * 1989-09-13 1991-03-15 Sireix Method for manufacturing cardboard packaging and product obtained by this method
JPH06239380A (en) * 1993-02-10 1994-08-30 Kanebo Nsc Ltd Sealed bag containing hot-melt adhesive of urethane resin and method for manufacture

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 620 (M - 1711) 25 November 1994 (1994-11-25) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2187217A1 (en) * 1999-01-13 2003-05-16 Innovaciones Mecanicas Campoll Machine is for adjustment by insertion of capsules of biscuits, butter-cakes and similar and comprises female piece fixed to support and adjacent male piece displaceable vertically, both parts having quadrangular section
GB2364952A (en) * 2000-05-11 2002-02-13 Hirano Shiki Co Ltd A paper mould
GB2364952B (en) * 2000-05-11 2003-02-19 Hirano Shiki Co Ltd Food molds
WO2004078448A1 (en) * 2003-03-05 2004-09-16 Henkel Kommanditgesellschaft Auf Aktien Method for producing a portion package made of a thermoplastic material in a casting mold made of a silicone elastomer obtained by a platinum cross-linking process
EP2829482A1 (en) * 2013-07-24 2015-01-28 Pester Pac Automation GmbH Process for three-dimensional forming of flat material
EP2829392A1 (en) * 2013-07-24 2015-01-28 Pester Pac Automation GmbH Apparatus for shaping a flat material
JP2020163732A (en) * 2019-03-29 2020-10-08 東洋アルミエコープロダクツ株式会社 Method for producing container and blank

Also Published As

Publication number Publication date
ITMI940064A1 (en) 1995-07-19
ITMI940064A0 (en) 1994-01-19

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