| 摘要 |
<p>Package (1) comprises sleeve made from two composite layers (4, 5) each covered with a thermo-sealable plastic (14) forming the inner surface of the package. The plastic covering has a roughness on Bendtsen DIN 53108 scale of 800-1200 ml/min, and preferably of 910 ml/min. The surfaces of the covering have a friction coefficient between them of≤0.5 to allow for easy opening of the sleeve.</p> |
