This paper will introduce how to select suitable BOPET film slip masterbatch to meet the quality requirements of different fields. BOPET film is widely used in food packaging, medical use, electronic components, and other fields, as a high-performance film, its quality directly affects the quality and safety of packaging products.
1. Characteristics of the BOPET film production process compared with others
BOPET film is produced by a two-way drawing process, which has the characteristics of high transparency, high mechanical strength, excellent flatness, and smoothness. The production process of BOPET film is divided into two steps: stretching and curing, in which the addition of slip masterbatch is carried out in the curing step.
The slip masterbatch of BOPET film is mainly divided into two types: internal slip agent and surface slip masterbatch. The former is the master particle slip masterbatch mixed with PET substrate, and the latter is the liquid slip agent sprayed on the surface.
2. Differences between BOPET masterbatch and other masterbatches
Compared with another masterbatch, BOPET masterbatch has a higher melting index, better transparency, and heat resistance. The selection of suitable masterbatch plays an important role in the quality of BOPET films.
The slip masterbatch added in BOPET masterbatch is usually silicone oil or amide. Silicone oil slip masterbatch has excellent high-temperature resistance and low friction coefficient, but it is easy causes surface pollution and shedding, so it should be carefully selected.
Amide slip masterbatch has better wear resistance and transparency, but the heat resistance is poor, and can not meet the requirements of a high-temperature environment.
3. How to choose the appropriate BOPET film slip masterbatch
The following factors need to be considered in the selection of suitable BOPET film slip masterbatch:
3.1 Functional Requirements
In the selection of the BOPET film slip masterbatch, it is necessary to determine the desired function according to the specific requirements of the product. For example, if the product needs to have high transparency and high gloss, then you need to choose a smooth agent that has less impact on transparency and gloss; If the product needs to have good wear resistance, then you need to choose a smooth agent with excellent wear resistance.
3.2 Cost of slip masterbatch
The price of slip masterbatch varies with variety, quality, and origin. When choosing a slip masterbatch, in addition to considering its functional requirements, also need to consider the cost. Generally speaking, the amount of slip masterbatch accounts for a relatively small proportion of the entire production cost, but the high price will also increase the entire production cost, so it is necessary to try to choose a reasonable price slip masterbatch under the premise of meeting the product requirements.
3.3 Compatibility of slip masterbatch
Different brands, different models of the slip masterbatch, their composition, properties, and processing methods are different, so it is necessary to pay attention to the compatibility of the slip masterbatch and the selected BOPET masterbatch, to avoid processing difficulties, quality instability, and other problems.
3.4 Operability of slip masterbatch
In the production process, it is necessary to consider the operation of the slip masterbatch, including adding method, adding time, adding quantity, etc. For different slip masterbatch, their operation mode will be slightly different, so it is necessary to pay attention to the operation details.
In short, the selection of a suitable BOPET film slip masterbatch needs to consider various factors, including the need to comprehensively consider product requirements, cost, compatibility, operability, and other factors, to select the best scheme.