Foam Tape Coating Machine
bopp self adhesive packaging tape printing coating slitting machine producing clear & color & printed packing tapes.
Calculation method of BOPP tape cost
Commonly used specifications for sealing tape are 5.5cm, 45cm, etc. The general unit is expressed by "m" or "code" (1 yard = 0.9144m); the calculation method of the unit price of each coil is usually calculated by "yuan/square meter". The price of tape, the average merchant is reported to the customer according to the price of a roll, so simple and more clear. Sealing tape specifications:
It is expressed by "width × length × thickness", where "width" is the width of the tape, generally expressed in mm or cm, generally ≥ 12mm, common specifications are: 5.5cm, 4.5cm, etc.; "long" is opened for the tape The total length in the future is generally expressed by "m" or "code" (1 code = 0.9144m), common lengths are 50m, 100m, 150m, 200m, etc.; thickness refers to the total thickness of BOPP original film + adhesive layer (unit: Micron, μm), commonly used 45 ~ 50μm. Such as "5cm × 100m × 50μm".
The calculation method of the unit price of each roll of tape:
The tape industry usually uses “yuan/square meter” to calculate the price of the tape, then “price per roll = width (m) * length (m) * square price”.
The specific price has a large fluctuation according to the cost, because BOPP film and glue are all petroleum products.
The price of BOPP precoat film is based on BOPP film thickness, EVA coating thickness, and order quantity.
Generally BOPP pre-coated film, BOPP film thickness is 12-20 microns, the thickness of the glue layer is 5-15 microns, and the glue layer is EVA.
In this way, the specific price can be calculated based on the thickness of both.
Characteristics of several coating methods -
1. Characteristics of air knife coating process:
The advantage of air knife coating is that a thick coating amount can be obtained, the coating layer is relatively uniform, and paper breakage is less likely to occur during coating. The disadvantage is that since the coater of the coater is an invisible air knife, it is necessary to require the paint to be soft and easy to control in order to scrape off excess paint and smooth the coating. In addition, the air knife formed by the air jet is more likely to cause the splash phenomenon of the paint, and the splash of the paint easily causes partial clogging of the air knife gap, resulting in unevenness of the coating layer.
1. Can make the paper get higher smoothness and gloss
2. The operability is higher than the air knife and the measuring rod, and the adjustment precision is higher than the latter two.
1. High requirements for base paper (to have good flatness, smoothness, sizing degree, etc.)
2. If it is used for topcoating, it also has higher requirements for lining (lower macroscopic roughness, but with appropriate micro-roughness)
3. This performance is good without air knives and measuring rods.
4. Easy to scratch the knife.