Bag making machine sealing crisp and brittle how to do?
2011-04-14 pk_hits:reasons:
(1) heat sealing temperature is too high;
(2) excessive pressure;
(3) sealing time is too long;
(4) the upper part of sealing the edge of the too sharp or damage to the Teflon-coated;
(5) sealing the bottom of the silicone rubber excellent;
(6) in the composite and the curing process the part of the film adhesive into the internal. Substrate effects due to the infiltration of adhesive toughness (impact resistance) decreased increased brittleness;
(7) cooling and placed in plastic the heat seal strength has increased but also a tendency to become brittle.
Strategy:
(1) according to the material within the seal coat sealing properties select the appropriate processing temperature pressure and heat sealing time;
(2) to improve the state of the upper surface of sealing knife smooth the surface of the seal;
(3) coated with Teflon fabric intact;
(4) select the appropriate hardness of the silicone rubber pad
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