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Matting coating base film and preparation method thereof

A cloth base film and matting technology, which is applied in the field of matting coating base film and its preparation, can solve the problems of increased energy consumption, solvent safety hazards, high cost, etc., achieve good matting performance and mechanical properties, improve bonding fastness, Avoid the effect of poor film formation

Active Publication Date: 2022-03-11
GETTEL GRP TONGCHENG PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production process of this pre-coated primer has the following disadvantages: (1) solvents such as toluene and ethyl acetate used in solvent-based primers volatilize in the production process to pollute the surrounding environment and also endanger the health of operators; (2) The solvent residue on the coating film will pollute the packaged food and medicine and endanger the health of consumers; (3) These solvents are all flammable and explosive items, and the storage of solvents has great safety hazards (4) The pre-coated primer needs matching drying equipment, which increases the energy consumption and the production cost is also higher
Although in recent years with the development of water-based adhesives, environmental protection issues have been improved, but the cost is still high

Method used

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  • Matting coating base film and preparation method thereof
  • Matting coating base film and preparation method thereof
  • Matting coating base film and preparation method thereof

Examples

Experimental program
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Effect test

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...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/06B32B27/18C08L23/14C08L93/04C08K9/06C08K3/36B29D7/01
CPCB32B27/32B32B27/08B32B27/18C08L23/14B29D7/01B32B2307/408C08L93/04C08K9/06C08K3/36
Inventor 陈斐方保国尤圣隆齐先锋都昌照王兆中
Owner GETTEL GRP TONGCHENG PLASTIC IND
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