| 摘要 |
Sleeve type valve bag of plastics was manufd. by forming sleeve type injection inlet composed of pannel and main wall parts. The inside of inlet formed by ciossly contacting fly sift (13) to the inside of main wall parts contained more than two flies, but less than total flies of the secound pannel. A former side (12) and main wall parts (11) composed of multiflies more than two, incuding both side and sleeve side of connecting parts, were filmed identically.
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