Strong and good quality solid or double-faced corrugated fibreboard (single or multiwall) shall be
used, appropriate to the capacity of the box and to its intended use. The water resistance of the outer
surface shall be such that the increase in mass, as determined in a test carried out over a period of 30
minutes by the Cobb method of determining water absorption, is not greater than 155 g/m2 - see ISO
535:l991. It shall have proper bending qualities. Fibreboard shall be cut, creased without scoring, and
slotted so as to permit assembly without cracking, surface breaks or undue bending. The fluting of
corrugated fibreboard shall be firmly glued to the facings.
The ends of boxes may have a wooden frame or be entirely of wood or other suitable material.
Reinforcements of wooden battens or other suitable material may be used.
Manufacturing joins in the body of boxes shall be taped, lapped and glued, or lapped and stitched with
metal staples. Lapped joins shall have an appropriate overlap.
Where closing is effected by gluing or taping, a water resistant adhesive shall be used.
Boxes shall be designed so as to provide a good fit to the contents.
Maximum net mass: 400 kg.
4H1 expanded plastics boxes
4H2 solid plastics boxes
The box shall be manufactured from suitable plastics material and be of adequate strength in relation
to its capacity and intended use. The box shall be adequately resistant to ageing and to degradation
caused either by the substance contained or by ultra-violet radiation.
An expanded plastics box shall comprise two parts made of a moulded expanded plastics material, a
bottom section containing cavities for the inner packagings and a top section covering and
interlocking with the bottom section. The top and bottom sections shall be designed so that the inner
packagings fit snugly. The closure cap for any inner packaging shall not be in contact with the inside
of the top section of this box.
For dispatch, an expanded plastics box shall be closed with a self-adhesive tape having sufficient
tensile strength to prevent the box from opening. The adhesive tape shall be weather resistant and its
adhesive compatible with the expanded plastics material of the box. Other closing devices at least
equally effective may be used.
For solid plastics boxes, protection against ultra-violet radiation, if required, shall be provided by the
addition of carbon black or other suitable pigments or inhibitors. These additives shall be compatible
with the contents and remain effective throughout the life of the box. Where use is made of carbon
black, pigments or inhibitors other than those used in the manufacture of the tested design type,
retesting may be waived if the carbon black content does not exceed 2% by mass or if the pigment
content does not exceed 3% by mass; the content of inhibitors of ultra-violet radiation is not limited.
Additives serving purposes other than protection against ultra-violet radiation may be included in the
composition of the plastics material provided that they do not adversely affect the chemical or
physical properties of the material of the box. In such circumstances, retesting may be waived.
Solid plastics boxes shall have closure devices made of a suitable material of adequate strength and so
designed as to prevent the box from unintentional opening.
Where recycled plastics material is used for production of new packaging, the specific properties of
the recycled material shall be assured and documented regularly as part of a quality assurance
programme recognised by the competent authority. The quality assurance programme shall include a
record of proper pre-sorting and verification that each batch of recycled plastics material has the
proper melt flow rate, density, and tensile yield strength, consistent with that of the design type
manufactured from such recycled material. This necessarily includes knowledge about the packaging
material from which the recycled plastics have been derived, as well as the awareness of the prior
contents of those packagings if those prior contents might reduce the capability of new packaging
produced using that material. In addition, the packaging manufacturer's quality assurance programme
under 18.104.22.168 shall include performance of the mechanical design type test in 6.1.5 on packagings
manufactured from each batch of recycled plastics material. In this testing, stacking performance may
be verified by appropriate dynamic compression testing rather than static load testing.