CN104448572A - Plastic packaging material for low-temperature dairy product - Google Patents

Abstract

The invention discloses a plastic packaging material for a low-temperature dairy product. The material is characterized by being prepared from the following raw materials in parts by weight: 108-120 parts of a polypropylene random copolymer, 14-20 parts of a non-woven crushing material, 1-2 parts of table salt, 0.4-1 part of tetradecanedioic acid, 1-2 parts of tetrahydrofurfuryl alcohol, 1-2 parts of zinc n-butylxanthate, 0.7-1 part of dimethylamino propylamine, 3-5 parts of clays, 2-3 parts of trumpet shell powder, 12-17 parts of fumed silica, 3-4 parts of tri(nonylphenyl) phosphate, 0.1-0.2 part of vanadyl-acetylacetonate, 1-2 parts of sodium fluosilicate, 0.6-1 parts of 2-thiol benzimidazole, 2-3 parts of calcium chloride and 1-2 parts of a corrosion prevention auxiliary. The sheet material disclosed by the invention is suitable for packaging dairy product and is free of toxicity and odor, meets the food packaging sanitary standard, has a certain impact performance at low temperature, and is hardly embrittled and suitable for packaging low-temperature and constant-temperature dairy products, and phenomena such as appearance damage under the condition of short-time quick freezing are avoided.

Description

A kind of low temperature milk-product Plastic Packaging Materials

Technical field

The present invention relates generally to plastic applications, particularly relates to a kind of low temperature milk-product Plastic Packaging Materials.

Background technology

Along with development and the progress of society, a large amount of bonded fabric products has protection against the tide because of it, ventilative, pliable and tough, light weight, not combustion-supporting, easy decomposition, nontoxic nonirritant, rich color, cheap, the feature such as to use again capable of circulation, and be widely applied to life, work, each production is local, simultaneously again because its low price, a lot of quality product is not high, therefore a large amount of waste products is formed, because of its light weight, recovery for non-woven fabrics is fairly simple again, and yield is large, so based on consideration that is energy-conservation and reduction production cost, our company adopts the non-woven fabrics broken material reclaimed, make new plastics sheet.

Summary of the invention

The object of the invention is just to provide a kind of low temperature milk-product Plastic Packaging Materials.

The present invention is achieved by the following technical solutions:

A kind of low temperature milk-product Plastic Packaging Materials, is characterized in that what it was made up of the raw material of following weight parts:

Atactic copolymerized polypropene 108-120, non-woven fabrics broken material 14-20, salt 1-2, tetradecane diprotic acid 0.4-1, tetrahydrofurfuryl alcohol 1-2, zinc n butylxanthate 1-2, dimethylaminopropylamine 0.7-1, clay 3-5, Concha rapanae thomasianae powder 2-3, gas-phase silica 12-17, trisnonyl phenyl phosphite 3-4, vanadium acetylacetonate 0.1-0.2, Sodium Silicofluoride 1-2,2-thiol group benzimidazolyl 0.6-1, calcium chloride 2-3, anti-corrosive aids 1-2;

Described anti-corrosive aids is made up of the raw material of following weight parts:

Polymethylmethacrylate 30-40, diacetone-acryloamide(DAA) 0.3-1, tetraethyl silicate 1-2, calcium propionate 3-5, dehydroacetic acid (DHA) 2-3, ammonium meta-vanadate 0.8-1, dehydrated alcohol 4-6, lauryl dimethyl amine oxide 0.3-1;

Tetraethyl silicate is joined in dehydrated alcohol, stir, obtain alcohol ester solution;

Mixed with calcium propionate by dehydroacetic acid (DHA), ball milling is even, joins in 6-10 times of deionized water, adds lauryl dimethyl amine oxide, stir, obtain dispersion liquid after stirring;

Polymethylmethacrylate is heated to 100-105 DEG C, add alcohol ester solution, stir, add diacetone-acryloamide(DAA), insulated and stirred 1-2 hour, add dispersion liquid, 200-300 rev/min is uniformly mixed 10-20 minute, adds each raw material of residue, dehydration after fully stirring, dry 3-5 minute at 70-80 DEG C, obtains described anti-corrosive aids.

2, a preparation method for low temperature milk-product Plastic Packaging Materials as claimed in claim 1, is characterized in that comprising the following steps:

(1) Sodium Silicofluoride is mixed with calcium chloride, join in 3-4 times of water, after stirring, add tetrahydrofurfuryl alcohol, be uniformly mixed 6-10 minute at 50-60 DEG C, add clay, be stirred to water and do, obtain siccative;

(2) by non-woven fabrics broken material preheating 10-20 minute at 100-105 DEG C, add siccative, stir, melt extrude, cooling, abrasive dust, obtain powder;

(3) by atactic copolymerized polypropene, gas-phase silica, trisnonyl phenyl phosphite, the mixing of Concha rapanae thomasianae powder, send into twin screw extruder and be extruded into particle, with above-mentioned powder with remain each raw material and mix, drying baker is sent into after stirring, 40-50 minute is dried at 100-120 DEG C, discharging melting, by sheet extruder extrusion moulding.

Advantage of the present invention is:

In anti-corrosive aids of the present invention, calcium propionate, dehydroacetic acid (DHA) are mixed with alcohol ester solution, finally by dispersion liquid and polymethylmethacrylate drying and moulding, make finished product have high strength, high durable, lightweight, the good characteristic such as anticorrosion.

Sheet material of the present invention is applicable to milk-product packaging, and nontoxic, odorless, meets food product pack hygienic standard, that there is certain shock resistance at low temperatures, not easily brittle, be applicable to the packaging of low temperature, normal temperature milk-product, under suddenly freezing condition in short-term, also there will not be the phenomenons such as cosmetic damage.

Embodiment

Embodiment 1

A kind of low temperature milk-product Plastic Packaging Materials, is characterized in that what it was made up of the raw material of following weight parts:

Atactic copolymerized polypropene 120, non-woven fabrics broken material 20, salt 2, tetradecane diprotic acid 0.4, tetrahydrofurfuryl alcohol 1, zinc n butylxanthate 1, dimethylaminopropylamine 0.7, clay 5, Concha rapanae thomasianae powder 3, gas-phase silica 17, trisnonyl phenyl phosphite 4, vanadium acetylacetonate 0.2, Sodium Silicofluoride 1,2-thiol group benzimidazolyl 0.6, calcium chloride 2, anti-corrosive aids 2;

Described anti-corrosive aids is made up of the raw material of following weight parts:

Polymethylmethacrylate 40, diacetone-acryloamide(DAA) 0.3, tetraethyl silicate 2, calcium propionate 5, dehydroacetic acid (DHA) 2, ammonium meta-vanadate 0.8, dehydrated alcohol 6, lauryl dimethyl amine oxide 0.3;

Tetraethyl silicate is joined in dehydrated alcohol, stir, obtain alcohol ester solution;

Mixed with calcium propionate by dehydroacetic acid (DHA), ball milling is even, joins in 10 times of deionized waters, adds lauryl dimethyl amine oxide, stir, obtain dispersion liquid after stirring;

Polymethylmethacrylate is heated to 105 DEG C, add alcohol ester solution, stir, add diacetone-acryloamide(DAA), insulated and stirred 2 hours, add dispersion liquid, 200 revs/min are uniformly mixed 20 minutes, add each raw material of residue, dehydration after fully stirring, at 80 DEG C, drying 5 minutes, obtains described anti-corrosive aids.

A preparation method for low temperature milk-product Plastic Packaging Materials as claimed in claim 1, is characterized in that comprising the following steps:

(1) Sodium Silicofluoride is mixed with calcium chloride, join in 4 times of water, after stirring, add tetrahydrofurfuryl alcohol, be uniformly mixed 10 minutes at 50-60 DEG C, add clay, be stirred to water and do, obtain siccative;

(2) by the preheating 20 minutes at 105 DEG C of non-woven fabrics broken material, add siccative, stir, melt extrude, cooling, abrasive dust, obtain powder;

(3) by atactic copolymerized polypropene, gas-phase silica, trisnonyl phenyl phosphite, the mixing of Concha rapanae thomasianae powder, send into twin screw extruder and be extruded into particle, with above-mentioned powder with remain each raw material and mix, drying baker is sent into after stirring, dry 50 minutes at 120 DEG C, discharging melting, by sheet extruder extrusion moulding.

Performance test:

Tensile yield strength: 295kg/cm ²

Elongation at break: 305%.

Claims (2)

1. a low temperature milk-product Plastic Packaging Materials, is characterized in that what it was made up of the raw material of following weight parts:

Atactic copolymerized polypropene 108-120, non-woven fabrics broken material 14-20, salt 1-2, tetradecane diprotic acid 0.4-1, tetrahydrofurfuryl alcohol 1-2, zinc n butylxanthate 1-2, dimethylaminopropylamine 0.7-1, clay 3-5, Concha rapanae thomasianae powder 2-3, gas-phase silica 12-17, trisnonyl phenyl phosphite 3-4, vanadium acetylacetonate 0.1-0.2, Sodium Silicofluoride 1-2,2-thiol group benzimidazolyl 0.6-1, calcium chloride 2-3, anti-corrosive aids 1-2;

Described anti-corrosive aids is made up of the raw material of following weight parts:

Polymethylmethacrylate 30-40, diacetone-acryloamide(DAA) 0.3-1, tetraethyl silicate 1-2, calcium propionate 3-5, dehydroacetic acid (DHA) 2-3, ammonium meta-vanadate 0.8-1, dehydrated alcohol 4-6, lauryl dimethyl amine oxide 0.3-1;

Tetraethyl silicate is joined in dehydrated alcohol, stir, obtain alcohol ester solution;

Mixed with calcium propionate by dehydroacetic acid (DHA), ball milling is even, joins in 6-10 times of deionized water, adds lauryl dimethyl amine oxide, stir, obtain dispersion liquid after stirring;

Polymethylmethacrylate is heated to 100-105 DEG C, add alcohol ester solution, stir, add diacetone-acryloamide(DAA), insulated and stirred 1-2 hour, add dispersion liquid, 200-300 rev/min is uniformly mixed 10-20 minute, adds each raw material of residue, dehydration after fully stirring, dry 3-5 minute at 70-80 DEG C, obtains described anti-corrosive aids.

2. a preparation method for low temperature milk-product Plastic Packaging Materials as claimed in claim 1, is characterized in that comprising the following steps:

(1) Sodium Silicofluoride is mixed with calcium chloride, join in 3-4 times of water, after stirring, add tetrahydrofurfuryl alcohol, be uniformly mixed 6-10 minute at 50-60 DEG C, add clay, be stirred to water and do, obtain siccative;

(2) by non-woven fabrics broken material preheating 10-20 minute at 100-105 DEG C, add siccative, stir, melt extrude, cooling, abrasive dust, obtain powder;

(3) by atactic copolymerized polypropene, gas-phase silica, trisnonyl phenyl phosphite, the mixing of Concha rapanae thomasianae powder, send into twin screw extruder and be extruded into particle, with above-mentioned powder with remain each raw material and mix, drying baker is sent into after stirring, 40-50 minute is dried at 100-120 DEG C, discharging melting, by sheet extruder extrusion moulding.