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What are the causes of vacuum loss of vacuum bags?
15-06-2020
Vacuum bags often show vacuum loss during the packaging process. This is a problem we are very worried about. Today, Novostar vacuum bag manufacturers talk about the main reasons for this phenomenon. There are four main ...
What are the materials of the vacuum bag heat seal layer? (1)
22-06-2020
1. Polyethylene film The polyethylene used in the heat sealing layer of the composite vacuum bag is mainly low density polyethylene and linear low density polyethylene (some products use medium density and high density p...
What are the materials of the vacuum bag heat seal layer? (2)
29-06-2020
1. Cover film Most of the jelly, cold drinks, yogurt, fruit milk and other foods available on the market are packed in plastic cups and bottles, and the cups and bottles are sealed with a film. Some requirements can be u...
What are the common types of flexible packaging bags? (1)
06-07-2020
1. Three-side sealing bag The three-side sealing bag has two side seams and a top seam bag, and the bottom edge is formed by horizontally folding the film. These bags can be folded or not, and when folded, they can stand...
What are the common types of flexible packaging bags? (2)
14-07-2020
1. Four sides sealing bag The four-side sealing bag is usually made by the top, two sides and bottom sealing of two (roll) materials. Compared with the bag mentioned before, it is possible to use two different plastic re...
What are the precautions for nylon vacuum bag making operations? (1)
20-07-2020
1. Nylon vacuum bag making must first obtain the production process sheet and samples and conduct mutual inspection of the semi-finished composite film to be produced. 2. Check whether the transmission parts, safety devi...

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