Matting coating base film and preparation method thereof

Abstract

The matt coating base film is sequentially composed of an upper surface layer, a core layer and a lower surface layer, the upper surface layer is prepared from the following raw materials in parts by mass: 90-95 parts of matting master batch, 4-7 parts of rosin resin and 1-3 parts of an anti-sticking agent, and the matting master batch is prepared from the following raw materials in parts by mass: 82.5-90.5 parts of polypropylene, 5-10 parts of silane modified silicon dioxide matting powder and 0.001-0.002 part of an initiator. The invention also discloses a preparation method of the matt coating base film. According to the invention, PVDC coating can be directly carried out without pre-coating primer, the cost is saved, and the packaging base material is safe and environment-friendly, has good matting performance and mechanical performance, and is a novel, green and excellent-performance packaging base material.

Description

technical field

[0001] The invention relates to the field of film technology, in particular to a matting coating base film and a preparation method thereof. Background technique

[0002] With the development of technology, the performance of packaging materials has been further improved. For the packaging fields such as food and medicine with high moisture sensitivity, in order to prolong the shelf life of products, higher requirements are put forward for the barrier performance of packaging materials. Polyvinylidene chloride (PVDC) has a strong barrier to water and oxygen. Existing packaging materials often use BOPP base film as the carrier, PVDC as the top coating, and coat the base film to form a PVDC coating film. It is widely used in the packaging of various products, especially for food and medicine with good quality preservation performance.

[0003] In the production process of the traditional PVDC coating film, in order to solve the problem that the top coating po...

Examples

Embodiment 1

[0027] A matting coating base film, consisting of an upper surface layer, a core layer and a lower surface layer in turn; the upper surface layer is composed of the following raw materials in parts by mass: 92 parts of matting masterbatch, 6 parts of rosin resin, 2 parts of anti-tacking agent, The matting masterbatch is made of the following raw materials in parts by mass: 92 parts of polypropylene, 8 parts of silane-modified silica matting powder, and 0.4 parts of antioxidant.

[0028] The preparation method of matting masterbatch is as follows: after mixing polypropylene, silane-modified silica matting powder and antioxidant, melt extrusion at 180-220°C; the preparation of silane-modified silica matting powder The method is: add trifluoropropyltrimethoxysilane, vinyltrimethoxysilane and silica matting powder into toluene, disperse evenly, then react at 90°C for 5h, filter and dry to obtain silica The mass ratio of matting powder, trifluoropropyltrimethoxysilane and vinyltrim...

Embodiment 2

[0034] A matting coating base film, consisting of an upper surface layer, a core layer and a lower surface layer in turn; the upper surface layer is composed of the following raw materials in parts by mass: 90 parts of matting masterbatch, 7 parts of rosin resin, 3 parts of anti-tacking agent, The matting masterbatch is made of the following raw materials in parts by mass: 90 parts of polypropylene, 10 parts of silane-modified silica matting powder, and 0.1 part of antioxidant.

[0035]The preparation method of matting masterbatch is as follows: after mixing polypropylene, silane-modified silica matting powder and antioxidant, melt extrusion at 180-220°C; the preparation of silane-modified silica matting powder The method is: add trifluoropropyltrimethoxysilane, vinyltrimethoxysilane and silica matting powder into toluene, disperse evenly, then react at 80°C for 6h, filter, and dry to obtain silica The mass ratio of matting powder, trifluoropropyltrimethoxysilane and vinyltrim...

Embodiment 3

[0041] A matting coating base film, consisting of an upper surface layer, a core layer and a lower surface layer in turn; the upper surface layer is composed of the following raw materials in parts by mass: 95 parts of matting masterbatch, 4 parts of rosin resin, 1 part of anti-adhesive agent, The matting masterbatch is made of the following raw materials in parts by mass: 95 parts of polypropylene, 5 parts of silane-modified silica matting powder, and 0.5 parts of antioxidant.

[0042] The preparation method of matting masterbatch is as follows: after mixing polypropylene, silane-modified silica matting powder and antioxidant, melt extrusion at 180-220°C; the preparation of silane-modified silica matting powder The method is: add trifluoropropyltrimethoxysilane, vinyltrimethoxysilane and silica matting powder into toluene, disperse evenly, then react at 100°C for 2 hours, filter, and dry to obtain silica The mass ratio of matting powder, trifluoropropyltrimethoxysilane and vi...

technical field

[0001] The invention relates to the field of film technology, in particular to a matting coating base film and a preparation method thereof. Background technique

[0002] With the development of technology, the performance of packaging materials has been further improved. For the packaging fields such as food and medicine with high moisture sensitivity, in order to prolong the shelf life of products, higher requirements are put forward for the barrier performance of packaging materials. Polyvinylidene chloride (PVDC) has a strong barrier to water and oxygen. Existing packaging materials often use BOPP base film as the carrier, PVDC as the top coating, and coat the base film to form a PVDC coating film. It is widely used in the packaging of various products, especially for food and medicine with good quality preservation performance.

[0003] In the production process of the traditional PVDC coating film, in order to solve the problem that the top coating po...

Examples

Embodiment 1

[0027] A matting coating base film, consisting of an upper surface layer, a core layer and a lower surface layer in turn; the upper surface layer is composed of the following raw materials in parts by mass: 92 parts of matting masterbatch, 6 parts of rosin resin, 2 parts of anti-tacking agent, The matting masterbatch is made of the following raw materials in parts by mass: 92 parts of polypropylene, 8 parts of silane-modified silica matting powder, and 0.4 parts of antioxidant.

[0028] The preparation method of matting masterbatch is as follows: after mixing polypropylene, silane-modified silica matting powder and antioxidant, melt extrusion at 180-220°C; the preparation of silane-modified silica matting powder The method is: add trifluoropropyltrimethoxysilane, vinyltrimethoxysilane and silica matting powder into toluene, disperse evenly, then react at 90°C for 5h, filter and dry to obtain silica The mass ratio of matting powder, trifluoropropyltrimethoxysilane and vinyltrim...

Embodiment 2

[0034] A matting coating base film, consisting of an upper surface layer, a core layer and a lower surface layer in turn; the upper surface layer is composed of the following raw materials in parts by mass: 90 parts of matting masterbatch, 7 parts of rosin resin, 3 parts of anti-tacking agent, The matting masterbatch is made of the following raw materials in parts by mass: 90 parts of polypropylene, 10 parts of silane-modified silica matting powder, and 0.1 part of antioxidant.

[0035]The preparation method of matting masterbatch is as follows: after mixing polypropylene, silane-modified silica matting powder and antioxidant, melt extrusion at 180-220°C; the preparation of silane-modified silica matting powder The method is: add trifluoropropyltrimethoxysilane, vinyltrimethoxysilane and silica matting powder into toluene, disperse evenly, then react at 80°C for 6h, filter, and dry to obtain silica The mass ratio of matting powder, trifluoropropyltrimethoxysilane and vinyltrim...

Embodiment 3

[0041] A matting coating base film, consisting of an upper surface layer, a core layer and a lower surface layer in turn; the upper surface layer is composed of the following raw materials in parts by mass: 95 parts of matting masterbatch, 4 parts of rosin resin, 1 part of anti-adhesive agent, The matting masterbatch is made of the following raw materials in parts by mass: 95 parts of polypropylene, 5 parts of silane-modified silica matting powder, and 0.5 parts of antioxidant.

[0042] The preparation method of matting masterbatch is as follows: after mixing polypropylene, silane-modified silica matting powder and antioxidant, melt extrusion at 180-220°C; the preparation of silane-modified silica matting powder The method is: add trifluoropropyltrimethoxysilane, vinyltrimethoxysilane and silica matting powder into toluene, disperse evenly, then react at 100°C for 2 hours, filter, and dry to obtain silica The mass ratio of matting powder, trifluoropropyltrimethoxysilane and vi...

Images