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CPP film with high interfacial bonding strength

A technology of interfacial bonding strength and polymer, applied in the direction of surface pretreatment, synthetic resin layered products, and devices for coating liquid on the surface, etc., can solve the problems of obvious degradation effect and low surface tension of CPP corona treatment film

Inactive Publication Date: 2010-01-06
成都富林达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention provides a high interfacial bonding strength CPP film to solve the above technical problems, which can solve the problems of low surface tension and obvious degradation effect of the CPP corona treatment film that hinder the development of the industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] High interfacial bonding strength CPP film is made by surface coating method, including CPP substrate layer and coating layer. The coating layer is a polymer microemulsion. The preparation process is as follows:

[0024] A. Equipped with a temperature controller, N 2 Add 1-3% emulsifier and 97-99% water into the reaction kettle of the introduction pipe, agitator and condenser pipe, and disperse at 65°C;

[0025] B. After the dispersed solution is kept at a constant temperature for 0.5 hours, add a mixed solution containing 0.5-1% emulsifier and 0.2-3% cross-linking functional group monomer and drop it into the reaction kettle. The pH value is maintained at 3-9. After maintaining the temperature for another 1 hour, add an aqueous initiator and raise the temperature to 75° C., and react for 6 hours to prepare a polymer microemulsion.

[0026] The emulsifier contains methyl methacrylate, ethyl acrylate, acrylic acid, hydroxyethyl acrylate, hydroxyethyl methacrylate (in pa...

Embodiment 2

[0031] High interfacial bonding strength CPP film is made by surface coating method, including CPP substrate layer and coating layer. The coating layer is a polymer microemulsion. The preparation process is as follows:

[0032] A. Equipped with a temperature controller, N 2 Add 1-3% emulsifier and 97-99% water into the reaction kettle of the introduction pipe, agitator and condenser pipe, and disperse at 60°C;

[0033] B. After the dispersed solution is kept at a constant temperature for 1 hour, then add a mixed solution containing 0.5-1% emulsifier and 0.2-3% cross-linking functional group monomer and drop it into the reaction kettle. The pH value is maintained at 3-9. After maintaining the temperature for another 1 hour, add an aqueous initiator and raise the temperature to 85° C., and react for 5 hours to prepare a polymer microemulsion.

[0034] The emulsifier contains methyl methacrylate, ethyl acrylate, acrylic acid, hydroxyethyl acrylate, hydroxyethyl methacrylate (in ...

Embodiment 3

[0037] High interfacial bonding strength CPP film is made by surface coating method, including CPP substrate layer and coating layer. The coating layer is a polymer microemulsion. The preparation process is as follows:

[0038] A. Equipped with a temperature controller, N 2 Add 1-3% emulsifier and 97-99% water into the reaction kettle of the introduction pipe, agitator and condenser pipe, and disperse at 45°C;

[0039]B. After the dispersed solution is kept at a constant temperature for 1.5 hours, then add a mixed solution containing 0.5-1% emulsifier and 0.2-3% cross-linking functional group monomer and drop it into the reaction kettle. The pH value is maintained at 3-9. After maintaining the temperature for another 2 hours, add an aqueous initiator and raise the temperature to 90° C., and react for 4.5 hours to prepare a polymer microemulsion.

[0040] The emulsifier contains methyl methacrylate, ethyl acrylate, acrylic acid, hydroxyethyl acrylate, hydroxyethyl methacrylate...

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Abstract

The invention discloses a CPP film with high interfacial bonding strength, which is prepared by a surface coating method. The CPP film comprises a CPP base material layer and a coating layer, and the coating layer is polymer microemulsion. A preparation process of the polymer microemulsion comprises the following steps: adding 1-3 percent of emulsifying agent and 97-99 percent of water into a reaction kettle provided with a temperature controller, an N2 ingress pipe, a stirrer and a condensation pipe and carrying out dispersion at 45-65 DEG C; keeping constant temperature for 0.5-1.5 hours after the dispersion; dropping a mixed solution containing 0.5-1 percent of the emulsifying agent and 0.2-3 percent of crosslinking functional monomers into the reaction kettle and the pH being maintained between 3 and 9; after keeping the constant temperature for 1-2 hours, adding an aqueous initiating agent into the reaction kettle and raising the temperature to 75-95 DEG C; and after reacting for 4-6 hours, obtaining the polymer microemulsion. The CPP film can adopt the self-synthesized polymer microemulsion as coating liquid which ensures that the surface tension of the coated CPP film can be adjusted, and after the CPP film is plated with aluminum, the interlaminar strength of the CPP film reaches more than 1.5N / 15mm. The CPP film completely meets the requirement on the compound interlaminar strength of gas packaging, and the bag breaking rate of the coated CPP film reaches a standard being lower than 0.1 percent of an industry requirement.

Description

technical field [0001] The invention relates to a CPP film of packaging materials, in particular to a CPP film with high interfacial bonding strength. Background technique [0002] CPP film is a polypropylene (PP) film produced by a cast extrusion process in the plastics industry. This type of film is different from BOPP (bidirectional polypropylene) film, which is a non-oriented film. CPP film has the characteristics of good transparency, high gloss, good stiffness, good moisture resistance, excellent heat resistance, and easy heat sealing. CPP film is printed and bagged, and is widely used in clothing, knitwear and flower packaging bags, document bags and photo albums. It is also a metallized film for food packaging and barrier packaging and decoration. In addition, there is an increasing demand for food packaging, candy packaging (twist film), pharmaceutical packaging (infusion bags), self-adhesive tapes, business card holders, and ring folders. [0003] my country's C...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B33/00B32B15/08B32B15/20C08J7/04C09D133/12B05D7/04B05D7/26B05D3/02B65D65/42
Inventor 田有为
Owner 成都富林达新材料有限公司
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