According to Brown, a monolayer material is used for the thermoformed base, while the lidding is a multilayer foil laminate, with no adhesive layer.

 
  • 據布朗,單層材料是用于熱基地,同時(shí)封蓋是一個(gè)多層金屬箔層壓板,無(wú)粘接層。
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