GIMA D 500
cap_4 GIMA D500 GB
4.1
4. CORRECT FUNCTIONING
4.1 Sealing temperature
The sealing temperature value has to be set according to the thickness, the kind and the condition of the material to be
sealed.
Check that the set temperature corresponds to the one , suggested by the bags manufacturer.
Should this value be unknown, following the table here below containing indicative adjustment values of the heat sealer,
according with the used material.
STANDARD STERILIZATION BAGS (*)
MATERIALS
PAPER/POLYPROPYLENE-POLYESTER
HEAT SEALABLE PAPER
TYVEK
FLAT POUCH
150°C - 160°C
150°C - 170°C
120°-130° C
GUSSETED POUCH
160°C - 170°C
155°C - 175°C
- - - - - - -
(*)Gima S.p.a. takes no responsability for the given data reliability.
For other materials or in case of troubles in finding the correct temperature, please send Gima S.p.a. a sampling of bags
to allow comparative tests and calculate the relevant adjustment values.
To set a new sealing temperature value see par. 3.2.1.
Make some tests to check the correctness of the new temperature value.
4.2 Sealing pressure
The sealing pressure is already set by the manufacturer according with all materials in normal use.
In case you should need a pressure increase/decrease for special purposes see par.5.5.
4.3 Sealing quality
Aiming to obtain steady high quality seals, please follow these guidelines:
- during the sealing cycle the bag should not be submitted to any traction or moves;
- make sure that the part of the bag to be sealed is clean and dry;
- place carefully the mouth of the bag to be sealed inside the in-feed guide; during this operation, remove the air in
excess;
- keep the mouth of the bag spread out until it is fully introduced in the sealing area of the machine; this
will prevent
from any damage to the sealing (see par. 2.5);
- never feed the pouches into the in-feed guide using a feeding speed higher than the machine transport speed;
- pouches feeding too much fast, can interfere with the in-feed photocell characteristic that might cause a transport stop;
- do not stop the sealer during the sealing, with the exception of emergency situations;
- should the bags be of small/medium size or with a light and not bulky contents, they can be conveyed by the machine
over the support surface; should the bags be heavier and larger, the entrainment will be easier by using the slip rolls
during the sealing (see par.9.1). The operator should in any case drive the bag during the sealing process.
Never introduce into the machine bags on which labels or adhesive tapes are applicated; this origins
rests of material into the sealing tunnel, which causes the bags jam into the machine.
To obtain perfect seals and to make the work easier, the DIN 58953 rules state that the pouches must
not to be filled more than the 3/4 of their length, letting always not less than 30 mm between the content
and the internal edge of the seal.
