Summary of the invention
For solving the technical problem existed in background technology, the present invention proposes a kind of laser die plastic packaging film, the packaging film tensile strength of gained and hardness high, wearability is good, the mould that laser die etc. has corner angle can be packed, prevent mould from being polluted and wear and tear.
A kind of laser die plastic packaging film that the present invention proposes, comprise inner membrance, cushion and adventitia, the raw material of described inner membrance comprises by weight: polyvinyl resin 80-120 part, low density polyethylene (LDPE) 60-90 part, high density polyethylene (HDPE) 30-60 part, polyvinyl chloride 20-40 part, nylon 10-30 part, aluminum-based layered nanometer material 10-30 part, cellulose 15-35 part, phosphorous acid lipid stabilizing agent 2-8 part, tributyl 2-acetylcitrate 3-8 part, benzoyl peroxide 1-6 part;
Described cushion is polystyrene foam plastics;
The raw material of described adventitia comprises by weight: polyolefin copolymer 60-90 part, polypropylene 15-35 part, polyolefin elastomer 20-40 part, calcium silicates 5-15 part.
Preferably, in the raw material of described inner membrance, the composition of low density polyethylene (LDPE) to be low density polyethylene (LDPE) 5310 and low density polyethylene (LDPE) 221A with mass ratio be 30-40:30-50.
Preferably, in the raw material of described inner membrance, high density polyethylene (HDPE) is for adopting HD5502AA.
Preferably, in the raw material of described adventitia, polyolefin copolymer is the composition of ethylene propylene copolymer and ethylene-butylene copolymer.
Preferably, in the raw material of described adventitia, polyolefin copolymer is ethylene propylene copolymer and ethylene-butylene copolymer is the composition of 40-50:20-40 in mass ratio.
Preferably, in the raw material of described adventitia, polypropylene is the composition of COPP and/or HOPP.
Preferably, in the raw material of described adventitia, the composition of polypropylene to be COPP and HOPP with mass ratio be 5-15:10-20.
Preferably, described polyolefin elastomer is polyethylene octene elastomer.
In the production process of reality, laser die needs, according to the service condition of reality, to select the inner membrance of respective thickness, cushion and adventitia with plastic packaging film, therefore without the need to limiting inner membrance, ratio between cushion and adventitia.
Preparation method of the present invention, comprises the steps:
S1, the preparation of inner membrance: by polyvinyl resin, low density polyethylene (LDPE) and high density polyethylene (HDPE) mix, be warming up to 50-60 DEG C, insulation 30-40min, do not stop stirring in the process heated up and obtain material a, then in material a, high density polyethylene (HDPE) is added, polyvinyl chloride, nylon, aluminum-based layered nanometer material, cellulose, phosphorous acid lipid stabilizing agent, tributyl 2-acetylcitrate and benzoyl peroxide, be warming up to 60-80 DEG C, insulation 1-2h, do not stop in the process heated up to stir, obtain material b, material b is extruded in double screw extruder, extrusion temperature is 180-200 DEG C, head membrana oralis temperature is 200-220 DEG C, carry out blowing after extruding and obtain inner membrance,
The preparation of S2, adventitia: polyolefin copolymer, polypropylene, polyolefin elastomer and calcium silicates are mixed, then 50-60 DEG C is warming up to, insulation 1-3h, obtain material c, material c is extruded in double screw extruder, extrusion temperature is 180-200 DEG C, and head membrana oralis temperature is 200-220 DEG C, carries out blowing and obtain adventitia after extruding;
S3, by the periphery of cushion coating bonding agent, then by inner membrance and adventitia, the periphery being bonded in cushion obtains laser die plastic packaging film.
In the present invention, packaging film is divided into inner membrance, cushion and adventitia carry out substep and produce, wherein inner membrance take polyvinyl resin as major ingredient, by low density polyethylene (LDPE), high density polyethylene (HDPE) and polyvinyl resin blended, low density polyethylene (LDPE) and high density polyethylene (HDPE) effectively can improve the rigidity of polyvinyl resin, wilfulness and anti-wear performance, and then improve the wearability of inner membrance, the polyvinyl chloride added effectively can improve the tension of inner membrance, bending resistance, resistance to compression and impact resistance, the nylon added, aluminum-based layered nanometer material and cellulose, inner toughness can not only be improved, effectively can also improve the wearability of inner membrance, the phosphorous acid lipid stabilizing agent added, tributyl 2-acetylcitrate and benzoyl peroxide, effectively improve decay resistance and the light fastness of inner membrance, padded coaming adopts polystyrene foam plastics, and it has hole-closing structure, and water imbibition is little, have excellent part water-resistance, and shock-absorbing capacity is excellent, adventitia take polyolefin copolymer as major ingredient, carries out reinforcement by acrylic acid, polyolefin elastomer and calcium silicates to it, effectively improves the wear-resisting of adventitia and tensile strength, the packaging film of gained of the present invention from the inside to the outside, all has good hot strength and anti-wear performance, and middle level adopts the material that shock-absorbing capacity is good, makes the to be packaged thing of whole packaging film to inside have good protective effect.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail; should understand; embodiment is only for illustration of the present invention, instead of for limiting the present invention, any amendment, equivalent replacement etc. made on basis of the present invention is all in protection scope of the present invention.
In detailed description of the invention, in the raw material of inner membrance, the weight portion of polyvinyl resin can be 80 parts, 82 parts, 84 parts, 86 parts, 88 parts, 90 parts, 92 parts, 94 parts, 96 parts, 98 parts, 100 parts, 102 parts, 104 parts, 106 parts, 108 parts, 110 parts, 112 parts, 114 parts, 116 parts, 118 parts, 120 parts; The weight portion of low density polyethylene (LDPE) can be 60 parts, 62 parts, 64 parts, 68 parts, 70 parts, 72 parts, 74 parts, 76 parts, 78 parts, 80 parts, 82 parts, 84 parts, 86 parts, 88 parts, 90 parts; The weight portion of high density polyethylene (HDPE) can be 30 parts, 32 parts, 34 parts, 35 parts, 36 parts, 38 parts, 40 parts, 42 parts, 44 parts, 45 parts, 46 parts, 48 parts, 50 parts, 52 parts, 54 parts, 56 parts, 58 parts, 60 parts; The weight portion of polyvinyl chloride can be 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts, 32 parts, 34 parts, 36 parts, 38 parts, 40 parts; The weight portion of nylon can be 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts; The weight portion of aluminum-based layered nanometer material can be 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts; Cellulosic weight portion can be 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts; The weight portion of phosphorous acid lipid stabilizing agent can be 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts; The weight portion of tributyl 2-acetylcitrate can be 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts; The weight portion of benzoyl peroxide can be 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts.
In the raw material of adventitia, the weight portion of polyolefin copolymer can be 60 parts, 62 parts, 64 parts, 66 parts, 68 parts, 70 parts, 72 parts, 74 parts, 76 parts, 78 parts, 80 parts, 82 parts, 84 parts, 86 parts, 88 parts, 90 parts; Polyacrylic weight portion can be 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts; The weight portion of polyolefin elastomer can be 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts, 32 parts, 34 parts, 36 parts, 38 parts, 40 parts; The weight portion of calcium silicates can be 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts.
Embodiment 1
A kind of laser die plastic packaging film, comprises inner membrance, cushion and adventitia; The raw material of inner membrance comprises by weight: polyvinyl resin 100 parts, low density polyethylene (LDPE) 531035 parts, low density polyethylene (LDPE) 221A 40 parts, HD5502AA 45 parts, polyvinyl chloride 30 parts, nylon 20 parts, aluminum-based layered nanometer material 20 parts, cellulose 25 parts, phosphorous acid lipid stabilizing agent 5 parts, tributyl 2-acetylcitrate 5.5 parts, benzoyl peroxide 3.5 parts; Cushion is polystyrene foam plastics; The raw material of adventitia comprises by weight: ethylene propylene copolymer 75 parts, ethylene-butylene copolymer 20 parts, COPP 10 parts, HOPP 15 parts, polyethylene octene elastomer 30 parts, calcium silicates 10 parts.
Embodiment 2
A kind of laser die plastic packaging film, comprises inner membrance, cushion and adventitia; The raw material of inner membrance comprises by weight: polyvinyl resin 80 parts, low density polyethylene (LDPE) 531040 parts, low density polyethylene (LDPE) 221A 30 parts, HD5502AA 60 parts, polyvinyl chloride 20 parts, nylon 30 parts, aluminum-based layered nanometer material 10 parts, cellulose 35 parts, phosphorous acid lipid stabilizing agent 2 parts, tributyl 2-acetylcitrate 8 parts, benzoyl peroxide 1 part; Cushion is polystyrene foam plastics; The raw material of adventitia comprises by weight: ethylene propylene copolymer 40 parts, ethylene-butylene copolymer 40 parts, COPP 5 parts, HOPP 20 parts, polyethylene octene elastomer 20 parts, calcium silicates 15 parts.
Embodiment 3
A kind of laser die plastic packaging film, comprises inner membrance, cushion and adventitia; The raw material of inner membrance comprises by weight: polyvinyl resin 120 parts, low density polyethylene (LDPE) 531030 parts, low density polyethylene (LDPE) 221A 50 parts, HD5502AA 30 parts, polyvinyl chloride 40 parts, nylon 10 parts, aluminum-based layered nanometer material 30 parts, cellulose 15 parts, phosphorous acid lipid stabilizing agent 8 parts, tributyl 2-acetylcitrate 3 parts, benzoyl peroxide 6 parts; Cushion is polystyrene foam plastics; The raw material of adventitia comprises by weight: ethylene propylene copolymer 50 parts, ethylene-butylene copolymer 20 parts, COPP 15 parts, HOPP 10 parts, polyethylene octene elastomer 40 parts, calcium silicates 5 parts.
Embodiment 4
A kind of laser die plastic packaging film, comprises inner membrance, cushion and adventitia; The raw material of inner membrance comprises by weight: polyvinyl resin 85 parts, low density polyethylene (LDPE) 531038 parts, low density polyethylene (LDPE) 221A 35 parts, HD5502AA 55 parts, polyvinyl chloride 25 parts, nylon 25 parts, aluminum-based layered nanometer material 15 parts, cellulose 30 parts, phosphorous acid lipid stabilizing agent 3 parts, tributyl 2-acetylcitrate 7 parts, benzoyl peroxide 2 parts; Cushion is polystyrene foam plastics; The raw material of adventitia comprises by weight: ethylene propylene copolymer 42 parts, ethylene-butylene copolymer 35 parts, COPP 8 parts, HOPP 18 parts, polyethylene octene elastomer 25 parts, calcium silicates 12 parts.
Embodiment 5
A kind of laser die plastic packaging film, comprises inner membrance, cushion and adventitia; The raw material of inner membrance comprises by weight: polyvinyl resin 115 parts, low density polyethylene (LDPE) 531032 parts, low density polyethylene (LDPE) 221A45 part, HD5502AA 35 parts, polyvinyl chloride 35 parts, nylon 15 parts, aluminum-based layered nanometer material 25 parts, cellulose 20 parts, phosphorous acid lipid stabilizing agent 7 parts, tributyl 2-acetylcitrate 4 parts, benzoyl peroxide 5 parts; Cushion is polystyrene foam plastics; The raw material of adventitia comprises by weight: ethylene propylene copolymer 48 parts, ethylene-butylene copolymer 25 parts, COPP 12 parts, HOPP 12 parts, polyethylene octene elastomer 35 parts, calcium silicates 8 parts.
The above; be only the present invention's preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.