| 摘要 |
<p>In a system of packaging of foodstuffs in containers (12), of rectangular horizontal section, each open-topped container (12) is sterilized, filled, and closed with a sterilized closure (1). The closure (1) is of a laminate including a thermoplastics layer of sufficient thickness to fill an internal discontinuity (12'') of the container mouth during heat-sealing of the closure (1) to the container (12). In making the closure (1), a portion of laminate is partially severed to form a flap (5) and the laminate is clamped around the flap (5) and drawn to form a shallow dish, to the inside of the base of which is heat-sealed a diaphragm (7) including a pull tab (8). The thermoplastics layer is on a reflective metal layer and incorporates infrared-absorbing particles and infrared - reflective particles.</p> |
