back seal

基本解释

Pack with film, top seal, bottom seal and back seal by automatic bag making machine.
包装材料用卷膜，机器自动制袋为上封、下封加背面封口。
Pack with film, upper seal, lower seal and back seal by automatic bag making machine.
包装材料用卷膜，机器自动制袋为上封、下封加背面封口。
Use back seal design, can replace top seal parts under pressure. Entirety of non-rising bonnet design, have compact structure.
采用倒关双密封设计，可带压更换上密封组件，整体阀盖暗杆设计，结构紧凑。

After his first time seeing her play with the other kids, George confidently reported back to Seal that Caroline had no problem holding her own.
FORBES: Caroline Pla, 11-Year Old Football Player, Discriminated Against By The Catholic Church