To achieve the ideal heat sealing strength, a certain heat sealing pressure must be set. If the pressure is insufficient, not only will the adhesive layer of the product and the PVC film be unable to fully fit together for heat sealing, but air bubbles will even remain between the two, failing to achieve a good heat sealing effect.
Therefore, the national standard stipulates that the heat sealing pressure is 0.2×10Pa.
Now there are many manufacturers of PTP aluminum foil production equipment in China, and medicinal aluminum foil equipment can already meet the needs of some domestic packagers. There are now hundreds of domestic manufacturers with blister packaging qualifications.
