U.S. patent application number 11/792058 was filed with the patent office on 2007-12-27 for packaging sleeve.
This patent application is currently assigned to Klebchemie M.G. Becker GmbH + Co. KG. Invention is credited to Klaus Becker-Weimann, Bernd Keller, Roland Schultheis.
Application Number | 20070295787 11/792058 |
Document ID | / |
Family ID | 34258927 |
Filed Date | 2007-12-27 |
United States Patent
Application |
20070295787 |
Kind Code |
A1 |
Schultheis; Roland ; et
al. |
December 27, 2007 |
Packaging Sleeve
Abstract
A sleeve pack is proposed for transporting and/or storing solid
products liable to deformation on temperature exposure, comprising
a base and a body joined to the base, characterized in that the
base is formed from a honeycomb sheet and the body is formed from
wound cardboard.
Inventors: |
Schultheis; Roland;
(Weingarten, DE) ; Keller; Bernd; (Karlsruhe,
DE) ; Becker-Weimann; Klaus; (Karlsruhe, DE) |
Correspondence
Address: |
BIRCH STEWART KOLASCH & BIRCH
PO BOX 747
FALLS CHURCH
VA
22040-0747
US
|
Assignee: |
Klebchemie M.G. Becker GmbH + Co.
KG
Max-Becker-Strasse 4
Weingarten
DE
76356
|
Family ID: |
34258927 |
Appl. No.: |
11/792058 |
Filed: |
December 5, 2005 |
PCT Filed: |
December 5, 2005 |
PCT NO: |
PCT/EP05/13009 |
371 Date: |
June 1, 2007 |
Current U.S.
Class: |
229/5.5 |
Current CPC
Class: |
B65D 3/10 20130101 |
Class at
Publication: |
229/005.5 |
International
Class: |
B65D 3/00 20060101
B65D003/00 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 3, 2004 |
DE |
20 2004 018 720.5 |
Claims
1-7. (canceled)
8. Sleeve pack for transporting and/or storing solid products
liable to deformation on temperature exposure, comprising a base
and a body joined to the base and made of wound cardboard,
characterized in that the base is formed from a honeycomb sheet
with polygonal honeycombs.
9. Sleeve pack according to claim 8, characterized in that the
geometry of the honeycombs is hexagonal.
10. Sleeve pack according to claim 8, characterized in that the
honeycomb sheet is formed from a paper material.
11. Sleeve pack according to claim 8, characterized in that the
thickness of the honeycomb sheet is between 10 and 25 mm.
12. Sleeve pack according to claim 11, characterized in that the
thickness of the honeycomb sheet is 15 mm.
13. Sleeve pack according to claim 8, characterized in that the
base and the body are joined by stapling, gluing or clipping
together or by means of tongue and groove.
14. Sleeve pack according to claim 8, characterized by a
cylindrical geometry.
15. Sleeve pack according to claim 14, characterized by a
circular-cylindrical geometry.
16. A method of using of a sleeve pack according to claim 8 for
transporting and/or storing polyurethane compositions.
17. A method of using of a sleeve pack according to claim 16,
wherein the polyurethane compositions are hotmelt adhesives.
Description
[0001] The invention relates to a sleeve pack for transporting
and/or storing solid products liable to deformation on temperature
exposure.
[0002] Products which, though solid at standard temperature, in the
range from about 20 to 25.degree. C., may nevertheless deform on
temperature exposure must frequently be stored and/or transported
in such a way that their dimensional stability is ensured. For this
purpose it is common to use sleeve packs which, particularly in the
case of relatively large containers, are required to absorb high
forces without themselves deforming.
[0003] In practice, for this purpose, sleeve packs with bases made
of injection-moulded plastics, more particularly of polyethylene or
polypropylene, have become established. The side wall connected to
the base, the body of the sleeve pack, which is subject to little
or no loading, can be formed for cost reasons from a paper
material, in particular from cardboard.
[0004] Also known are sleeve packs which are formed singularly of a
paper material.
[0005] A disadvantage of the known sleeve packs is that they
frequently lack sufficient dimensional stability to absorb the
forces that may occur on the thermal deformation of solid products
which are transported in the sleeve pack. However, if the original
form of the product changes, problems may occur in downstream
processing operations. Polyurethane hotmelt adhesives, for example,
are frequently packaged and transported in the form of cylindrical
blocks, known as cartridges, often with a weight in the range from
2 to 20 kg. For their further use, the cartridges must fit into
existing melting apparatus, in which they are subject in particular
to the pressure of a platen, which is generally planar. For the
trouble-free processing of the polyurethane hotmelt adhesive
cartridges in the melting apparatus, and for the pressure
application of the platen, it is necessary in particular for the
cartridges to have a planar base.
[0006] It was an object of the invention, therefore, to provide a
sleeve pack for the transport and/or storage of solid products
liable to deformation on temperature exposure that has sufficient
dimensional stability to adsorb the accompanying forces and to
prevent deformation of the solid product.
[0007] This object is achieved by means of a sleeve pack for
transporting and/or storing solid products liable to deformation on
temperature exposure, comprising a base and a body joined to the
base, characterized in that the base is formed from a honeycomb
sheet.
[0008] Honeycomb sheets are lightweight structural components which
on account of their multi-wall construction, with or without sheets
of solid material closing them off in a sandwich format at either
end, have a high fraction of cavities and combine excellent
mechanical properties, in particular high stability, strength and
damping, all with a low inherent weight.
[0009] The geometry of the honeycombs is not critical in this
utility; it may, for example, be hexagonal in formation, like bees'
honeycombs, or else may be generally polygonal in its
formation.
[0010] For the base of the sleeve pack of the invention the
material selected for the honeycomb sheet may for example be a
plastic, more particularly polypropylene.
[0011] It is preferred, however, to produce the base from a paper
honeycomb sheet. This is especially advantageous when the body of
the sleeve pack as well is formed from a similar material, more
specifically from a paper material, since in that case the sleeve
pack can be recycled as a single material.
[0012] The paper stock for the body of the sleeve pack is
advantageously a cardboard, in particular a wound cardboard.
[0013] The thickness of the honeycomb sheet for the base of the
sleeve pack is selected in accordance with the size and weight of
the container, preferably in the range from 10 to 25 mm.
[0014] The base and body of the sleeve pack may be joined in any
known way, more particularly by stapling, gluing or clipping
together or by means of tongue and groove.
[0015] Paper honeycomb sheets are produced, for example, by SWAP
GmbH, Frankenberg, as Fixboard.RTM. products from Melecky a.s., or
as BeeBoard.RTM. products from Besin International n.v.
[0016] The geometry of the sleeve pack is preferably cylindrical,
more particularly circular-cylindrical. Exemplary dimensions of the
body are an internal diameter of 282 mm, an external diameter of
288 mm and an overall height of 350 mm. The base is formed, by way
of example, as a circular disc having a diameter of 282 mm and a
height of 15 mm.
[0017] With particular advantage the honeycomb sheet selected for
the base has a compressive strength of 40 t/m.sup.2 and a buckling
resistance of 40 t/m.sup.2.
[0018] The sleeve pack of the invention is suitable in particular
for transporting polyurethane compositions which are solid at room
temperature, from about 20 to 25.degree. C., but are liable to
deformation on temperature exposure. In particular these
compositions may be one-component hotmelt adhesives, known as PU
hotmelts, of the type, for example, of Kleiberit.RTM. PUR-SK,
Jowatherm-Reaktant.RTM. PU hotmelt adhesive, Henkel Purmelt.RTM. or
Fuller Ipatherm.RTM..
[0019] In the operation of producing these hotmelt adhesives the
product is obtained in a liquid form, frequently at a temperature
between about 120 and 150.degree. C., and is initially introduced
into a composite aluminium pouch. The composite aluminium pouch
filled with the hotmelt adhesive cools down in the sleeve pack over
the course of approximately 12 to 24 h, and in doing so it
solidifies to form a cylindrical block, the cartridge. The high
dimensional stability of the sleeve pack ensures that there is no
change in the shape of the cartridge even when transported under
extreme climatic conditions.
* * * * *