Antifreezing speed-sealing film and preparation method thereof

A technology of film and polypropylene film, which is applied in the field of antifreeze quick-sealing film and its preparation, can solve the problems of inability to play a packaging role, poor mechanical properties of packaging bags, and reduced protection performance of packaging bags, and achieve excellent antifreeze Cold resistance, good shelf effect, and the effect of improving product quality

A technology of film and polypropylene film, which is applied in the field of antifreeze quick-sealing film and its preparation, can solve the problems of inability to play a packaging role, poor mechanical properties of packaging bags, and reduced protection performance of packaging bags, and achieve excellent antifreeze Cold resistance, good shelf effect, and the effect of improving product quality

CN101367280AActive Publication Date: 2009-02-18HUANGSHAN NOVEL
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  • Antifreezing speed-sealing film and preparation method thereof
  • Antifreezing speed-sealing film and preparation method thereof
  • Antifreezing speed-sealing film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Extrusion process, chilled roll solidification process, cooling process, thickness measurement process, corona process, deflection process, edge trimming process, compound process of BOPP and CPP, slitting into roll film process, the thickness of CPP film is 40μm.

[0069] In the extrusion process, the temperature of the resin is 220-280°C

[0070] In the cooling and setting process, the temperature of the chilled roll is 20-40°C.

[0071] Traction speed 20-40m / min

[0072] In the lamination process, lamination is carried out by a dry lamination machine, the operating concentration of the adhesive used is controlled at No. 3 Zahn cup for 17 seconds, the drying temperature is 70°C, and the speed of the lamination machine is 130m / min.

[0073] The resin of the corona layer is a mixed resin of F703 and A-4085S, and the weight ratio of F703 and A-4085S is 9:1;

[0074] The resin of the middle layer is a mixed resin of BC3HF and A-4085S, and the weight ratio of BC3HF and A...

Embodiment 2

[0079] Except that the weight ratio of FX4T, A-4085S, ABPP10S, and SL07PP in the resin of the heat-sealing layer is 50:20:2:1.5, the rest is the same as that of Example 1.

Embodiment 3

[0081] Except that the weight ratio of FX4T, A-4085S, ABPP10S, and SL07PP in the resin of the heat-sealing layer is 55:20:2:1.5, the rest is the same as that of Example 1.

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Abstract

The invention discloses an anti-freezing film capable of being quickly sealed and a preparation method thereof. The film is formed by composition of biaxial tension polypropylene and a polypropylene film, wherein the polypropylene film consists of a corona layer, an intermediate layer and a heat-sealing layer; the heat-sealing layer comprises metallocene three-element blocking polypropylene, an ethylene elastomer, an antitackiness agent and a slip agent the weight ratio of which is 50-86.5: 18-20: 1-2: 1-1.5. The preparation method comprises the following steps in turn: a step of extrusion, a step of solidifying a sharp cooling roller, a step of cooling, a step of thickness measurement, a step of corona, a step of swing, a step of edge cutting, a step of composition of BOPP and CPP and a step of forming a spiral-wound film through cutting. Compared with the prior art, the anti-freezing film capable of being quickly sealed has the characteristics of good anti-freezing property, cold resistance and mechanical performance, obvious shock resistance effect and penetration resistance effect, low initial sealing temperature, short heat-sealing time and high sealing intensity, and is suitable for a modern quick automatic packaging unit.

Description

technical field [0001] The invention belongs to the technical field of film and its preparation method, in particular, it belongs to the antifreeze quick-sealable film and its preparation method for various foods such as rice, fruits and vegetables, seafood, meat products, cooked food, glutinous rice balls, buns, cold drinks, etc. . Background technique [0002] The frozen and refrigerated food industry is one of the fastest growing food industries in the world in recent years, and it is also developing very rapidly in China. At present, the common frozen packaging in our market is mostly used: OPP / LLDPE, NY / LLDPE, PET / LLDPE, PET / VMPET / LLDPE, PET / NY / LLDPE and other structures. This kind of packaging is prone to the following problems: (1) The impact resistance of the packaging bag is poor, and it is easily damaged by external forces during transportation, loading and unloading, and shelf placement, and it is very easy to break the bag and open the bag, which not only affect...

Claims

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Application Information

Patent Timeline
18 Feb 2009
Publication
CN101367280A
IPC
B32B27/32; B32B27/18; B65D65/40; B29C47/06; B29D7/01; B32B37/12
Inventors
汪学文; 陈付兵