Envelope makers tend a machine that takes in paper and executes the steps to creat envelopes: cut and fold the paper and glue it, then apply a weaker food-grade glue to the flap of the envelope for the consumer to seal it.
Envelope makers tend a machine that takes in paper and executes the steps to creat envelopes: cut and fold the paper and glue it, then apply a weaker food-grade glue to the flap of the envelope for the consumer to seal it.
Data Source: Unified Global Standards (ISCED, ISCO, O*NET, ESCO)