CN104786513A - Production technology of food packaging film - Google Patents
Production technology of food packaging film Download PDFInfo
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- CN104786513A CN104786513A CN201510142993.0A CN201510142993A CN104786513A CN 104786513 A CN104786513 A CN 104786513A CN 201510142993 A CN201510142993 A CN 201510142993A CN 104786513 A CN104786513 A CN 104786513A
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Abstract
The invention discloses a production technology of a food packaging film. A deoxidant is used as an additive in the production process, wherein the deoxidant is capable of preventing the materials from ageing in the producing and using processes; the raw materials are simultaneously mixed and preheated; the preheating temperature is 40 DEG C; the preheating process is used for avoiding the damage to the structures of the materials caused by sudden temperature increase in the extrusion stage; the flow rate of melt is 0.28 g/10min; the materials at the flow rate are discharged and are subsequently inflated and molded; the inflated film is uniform in thickness; the breakage caused by inflating is reduced; the corona treatment is carried out on the film before coiling; the voltage is 50 kv; the corona treatment can be used for greatly relieving the electrostatic phenomenon of the film; an adhesive used for bonding the film is a polyethylene adhesive; by virtue of application of the special adhesive, an excellent bonding effect of the film is achieved; meanwhile, the adhesive is free of toxicity and pollution.
Description
Technical field
The present invention relates to packaging material production field, particularly relate to a kind of food product packing film production technology.
Background technology
Food bag main material is generally PE polyethylene PP polypropylene, and food bag is extensively in packaging for foodstuff, and polyethylene, polypropylene monofilm good waterproof performance, but oxygen barrier is poor, the shelf-life of packaged food is shorter.For the food that the shelf-life is longer, particularly prepared food meat product, mainly adopts the multilayer complex films such as polyethylene, polypropylene, polyester.Simultaneously food bag can also fill easily earlier, veterinary antibiotics and small packs of ready food for children, cartoon picture and food are mixed puts together.And preservative film can also make veterinary antibiotics fresh-keeping, effectively raw and cooked foods isolation can be stored, refrigerator space utilization rate is strengthened, at use cooking in microwave oven or can also heat in food steamer, electric cooker, therefore the market prospects of food bag are fine.
Summary of the invention
A kind of food product packing film production technology, it is characterized in that, its step comprises:
(1) prepare burden
By HDPE raw material and additive according to the ratio of 25-30:1, prepare burden;
(2) be uniformly mixed
Sent in mixer by the material mixed, mix, mixing velocity is set to 400-500r/min, mixing 30-40min;
(3) extrude, blowing
The material mixed, extrudes through die orifice, and the technological parameter extruded is: die temperature is 182-220 DEG C, and the sheet extruded carries out blowing, and hollow molding pressure is 4-5kgf/cm
2, the flow rate of melt is 0.25-0.35g/10min, and temperature is 150-210 DEG C, and blowing pressure is 0.5-0.65Mpa, and blow-up ratio is 1.5-3;
(4) rolling
Carry out rolling to the film of blow molding, engine speed is per minute to be controlled: 1000-1450 turns, and subsidiary engine rotating speed is per minute to be controlled: 250-400 turns, and rolling rotating speed is per minute to be controlled: 200-350 turns;
(5) bag
Packaging bag is made according to the shape cutting of food, adhesive film;
(6) test package
Test package bag, packs according to often tying 500 packaging bags;
(7) finished product warehouse-in
Packaging bag packing is bundled, is finished product;
Preferably, the additive in step (1) batching is deoxidier.
Preferably, carry out preheating to raw material when mixing in step (2), preheat temperature is 40 DEG C.
Preferably, in step (3), melt flow is 0.28 g/10min.
Preferably, step carried out sided corona treatment to film in (4) before rolling, and voltage is 50kv.
Preferably, the adhesive that the bonding of step (5) film uses is polyethylene adhesive.
Beneficial effect: the invention provides a kind of food product packing film production technology, in production process, batch additives is deoxidier, and deoxidier can prevent aging in production and application process of material; Carry out preheating to raw material when mixing, preheat temperature is 40 DEG C, and preheating is to prevent son from extruding the unexpected intensification in stage to the destruction of material structure; Melt flow is 0.28 g/10min, and to its inflation plasticity after the material under this flow velocity flows out, the film thickness that inflation goes out is even, decreases the phenomenon of blowing brokenly; Before rolling, carry out sided corona treatment to film, voltage is 50kv, and sided corona treatment can alleviate the electrostatic phenomenon of film greatly; The adhesive that film bonding uses is polyethylene adhesive, uses special adhesive can play good bonding effect to the bonding of this kind of film, simultaneously nontoxic pollution-free.
Detailed description of the invention
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with detailed description of the invention, setting forth the present invention further.
embodiment 1:
A kind of food product packing film production technology, it is characterized in that, its step comprises:
(1) prepare burden
By HDPE raw material and additive according to the ratio of 30:1, prepare burden, additive is deoxidier;
(2) be uniformly mixed
Sent in mixer by the material mixed, mix, carry out preheating to raw material when mixing, preheat temperature is 40 DEG C, and mixing velocity is set to 500r/min, mixing 40min;
(3) extrude, blowing
The material mixed, extrudes through die orifice, and the technological parameter extruded is: die temperature is 220 DEG C, and the sheet extruded carries out blowing, and hollow molding pressure is 5kgf/cm
2, the flow rate of melt is 0.28g/10min, and temperature is 210 DEG C, and blowing pressure is 0.65Mpa, and blow-up ratio is 3;
(4) rolling
Before rolling, carry out sided corona treatment to film, voltage is 50kv, then carries out rolling to the film of blow molding, and engine speed is per minute to be controlled: 1450 turns, and subsidiary engine rotating speed is per minute to be controlled: 400 turns, and rolling rotating speed is per minute to be controlled: 350 turns;
(5) bag
Make packaging bag according to the shape cutting of food, adhesive film, adhesive is polyethylene adhesive;
(6) test package
Test package bag, packs according to often tying 500 packaging bags;
(7) finished product warehouse-in
Packaging bag packing is bundled, is finished product;
embodiment 2:
A kind of food product packing film production technology, it is characterized in that, its step comprises:
(1) prepare burden
By HDPE raw material and additive according to the ratio of 25:1, prepare burden, additive is deoxidier;
(2) be uniformly mixed
Sent in mixer by the material mixed, mix, carry out preheating to raw material when mixing, preheat temperature is 40 DEG C, and mixing velocity is set to 400r/min, mixing 40min;
(3) extrude, blowing
The material mixed, extrudes through die orifice, and the technological parameter extruded is: die temperature is 182 DEG C, and the sheet extruded carries out blowing, and hollow molding pressure is 4kgf/cm
2, the flow rate of melt is 0.28g/10min, and temperature is 150 DEG C, and blowing pressure is 0.5Mpa, and blow-up ratio is 1.5;
(4) rolling
Before rolling, carry out sided corona treatment to film, voltage is 50kv, then carries out rolling to the film of blow molding, and engine speed is per minute to be controlled: 1000 turns, and subsidiary engine rotating speed is per minute to be controlled: 250 turns, and rolling rotating speed is per minute to be controlled: 200 turns;
(5) bag
Make packaging bag according to the shape cutting of food, adhesive film, adhesive is polyethylene adhesive;
(6) test package
Test package bag, packs according to often tying 500 packaging bags;
(7) finished product warehouse-in
Packaging bag packing is bundled, is finished product;
embodiment 3:
A kind of food product packing film production technology, it is characterized in that, its step comprises:
(1) prepare burden
By HDPE raw material and additive according to the ratio of 28:1, prepare burden, additive is deoxidier;
(2) be uniformly mixed
Sent in mixer by the material mixed, mix, carry out preheating to raw material when mixing, preheat temperature is 40 DEG C, and mixing velocity is set to 480r/min, mixing 35min;
(3) extrude, blowing
The material mixed, extrudes through die orifice, and the technological parameter extruded is: die temperature is 220 DEG C, and the sheet extruded carries out blowing, and hollow molding pressure is 4.5kgf/cm
2, the flow rate of melt is 0.28g/10min, and temperature is 180 DEG C, and blowing pressure is 0.5Mpa, and blow-up ratio is 2.0;
(4) rolling
Before rolling, carry out sided corona treatment to film, voltage is 50kv, then carries out rolling to the film of blow molding, and engine speed is per minute to be controlled: 1200 turns, and subsidiary engine rotating speed is per minute to be controlled: 280 turns, and rolling rotating speed is per minute to be controlled: 350 turns;
(5) bag
Make packaging bag according to the shape cutting of food, adhesive film, adhesive is polyethylene adhesive;
(6) test package
Test package bag, packs according to often tying 500 packaging bags;
(7) finished product warehouse-in
Packaging bag packing is bundled, is finished product;
| Calcination ash amount/g/100g | Punching rate/% | Bacterial population// 100cm 2 | The term of validity/month | |
| Embodiment 1 | 0.08 | 2.5% | ≤800 | 36 |
| Embodiment 2 | 0.07 | 2.6% | ≤850 | 38 |
| Embodiment 3 | 0.06 | 1.7% | ≤780 | 48 |
| Prior art index | 0.1 | 2.8% | ≤1000 | 32 |
Can draw according to above table data, when implementing embodiment 3 parameter, the film calcination ash amount obtained is 0.06g/100g, and punching rate is 1.7%, and bacterial population is for being less than 780/100cm
2, the term of validity is 48 months, and prior art index is calcination ash amount is 0.1g/100g, and punching rate is 2.8%, and bacterial population is for being less than 1000/100cm
2, the term of validity is 32 months, and in contrast the present invention has superiority significantly.
The invention provides a kind of food product packing film production technology, in production process, batch additives is deoxidier, and deoxidier can prevent aging in production and application process of material; Carry out preheating to raw material when mixing, preheat temperature is 40 DEG C, and preheating is to prevent son from extruding the unexpected intensification in stage to the destruction of material structure; Melt flow is 0.28 g/10min, and to its inflation plasticity after the material under this flow velocity flows out, the film thickness that inflation goes out is even, decreases the phenomenon of blowing brokenly; Before rolling, carry out sided corona treatment to film, voltage is 50kv, and sided corona treatment can alleviate the electrostatic phenomenon of film greatly; The adhesive that film bonding uses is polyethylene adhesive, uses special adhesive can play good bonding effect to the bonding of this kind of film, simultaneously nontoxic pollution-free.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. a food product packing film production technology, is characterized in that, its step comprises:
(1) prepare burden
By HDPE raw material and additive according to the ratio of 25-30:1, prepare burden;
(2) be uniformly mixed
Sent in mixer by the material mixed, mix, mixing velocity is set to 400-500r/min, mixing 30-40min;
(3) extrude, blowing
The material mixed, extrudes through die orifice, and the technological parameter extruded is: die temperature is 182-220 DEG C, and the sheet extruded carries out blowing, and hollow molding pressure is 4-5kgf/cm
2, the flow rate of melt is 0.25-0.35g/10min, and temperature is 150-210 DEG C, and blowing pressure is 0.5-0.65Mpa, and blow-up ratio is 1.5-3;
(4) rolling
Carry out rolling to the film of blow molding, engine speed is per minute to be controlled: 1000-1450 turns, and subsidiary engine rotating speed is per minute to be controlled: 250-400 turns, and rolling rotating speed is per minute to be controlled: 200-350 turns;
(5) bag
Packaging bag is made according to the shape cutting of food, adhesive film;
(6) test package
Test package bag, packs according to often tying 500 packaging bags;
(7) finished product warehouse-in
Packaging bag packing is bundled, is finished product.
2. a food product packing film production technology according to claim 1, is characterized in that, the additive in step (1) batching is deoxidier.
3. a food product packing film production technology according to claim 1, is characterized in that, carry out preheating to raw material when mixing in step (2), preheat temperature is 40 DEG C.
4. a food product packing film production technology according to claim 1, is characterized in that, in step (3), melt flow is 0.28 g/10min.
5. a food product packing film production technology according to claim 1, is characterized in that, step carried out sided corona treatment to film in (4) before rolling, and voltage is 50kv.
6. a food product packing film production technology according to claim 1, is characterized in that, the adhesive that the bonding of step (5) film uses is polyethylene adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510142993.0A CN104786513A (en) | 2015-03-30 | 2015-03-30 | Production technology of food packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510142993.0A CN104786513A (en) | 2015-03-30 | 2015-03-30 | Production technology of food packaging film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104786513A true CN104786513A (en) | 2015-07-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510142993.0A Pending CN104786513A (en) | 2015-03-30 | 2015-03-30 | Production technology of food packaging film |
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| Country | Link |
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| CN (1) | CN104786513A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107501675A (en) * | 2017-08-10 | 2017-12-22 | 上海福助工业有限公司 | High biomass content packing film and its production technology |
| CN109454908A (en) * | 2018-09-30 | 2019-03-12 | 句容市南山包装制品有限公司 | A kind of packaging bag production method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760084A (en) * | 2004-10-15 | 2006-04-19 | 甘国工 | Packaging bag combined bi-directional drawn cylindrical shaped membrane with not drawn cylindrical shaped membrane, and production method |
| EP2447177A1 (en) * | 2010-10-29 | 2012-05-02 | Mitsubishi Plastics, Inc. | Anti-static packaging bag for liquid crystal module and liquid crystal module packaging method |
-
2015
- 2015-03-30 CN CN201510142993.0A patent/CN104786513A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1760084A (en) * | 2004-10-15 | 2006-04-19 | 甘国工 | Packaging bag combined bi-directional drawn cylindrical shaped membrane with not drawn cylindrical shaped membrane, and production method |
| EP2447177A1 (en) * | 2010-10-29 | 2012-05-02 | Mitsubishi Plastics, Inc. | Anti-static packaging bag for liquid crystal module and liquid crystal module packaging method |
Non-Patent Citations (1)
| Title |
|---|
| 刘瑞霞: "《塑料挤出成型》", 31 May 2006 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107501675A (en) * | 2017-08-10 | 2017-12-22 | 上海福助工业有限公司 | High biomass content packing film and its production technology |
| CN109454908A (en) * | 2018-09-30 | 2019-03-12 | 句容市南山包装制品有限公司 | A kind of packaging bag production method |
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Application publication date: 20150722 |