CN104960765A - Thin transparent external packaging shrink film of ring-pull can and production method - Google Patents
Thin transparent external packaging shrink film of ring-pull can and production method Download PDFInfo
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- CN104960765A CN104960765A CN201510301604.4A CN201510301604A CN104960765A CN 104960765 A CN104960765 A CN 104960765A CN 201510301604 A CN201510301604 A CN 201510301604A CN 104960765 A CN104960765 A CN 104960765A
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Abstract
The invention relates to the technical field of packaging, in particular to a thin transparent external packaging shrink film of a ring-pull can and a production method. The thin transparent external packaging shrink film is good in transparency, and the product logo of a packaged product is clear; meanwhile, strength is ensured, cost is reduced, the production method is simple and efficiency is improved. Either of an upper surface layer or a lower surface layer comprises, by weight, 20-40 parts of high-pressure polyethylene, 25-40 parts of low-pressure polyethylene and 35-45 parts of metallocene polyethylene. A middle layer comprises, by weight, 20-25 parts of high-pressure polyethylene, 25-35 parts of low-pressure polyethylene, 5-15 parts of linear low-density polyethylene and 10-25 parts of metallocene polyethylene. According to the production process, the raw materials of the upper surface layer, the raw materials of the middle layer and the raw materials of the lower surface layer enter three center feeding rotating die heads respectively and then are extruded through three screw type extruders to be discharged in a rotating mode, the hot materials of the upper surface layer, the middle layer and the lower surface layer are compounded integrally automatically in a transition body and enter an adjusting ring, and vesicles of the hot materials which are compounded integrally automatically are automatically cooled through a double-air blowing ring in an overtemperature mode.
Description
Technical field
The present invention relates to packing technique field, be specially the slim transparent overwrap shrink film of a kind of pop can and production method.
Background technology
Heat shrink films is as packing common in daily life, its appearance print color is bright-coloured, attractive in appearance, the distinctive fire resistance characteristic of product especially common carton institute is incomparable, it has damp proof, moistureproof, volume is little is beneficial to the conditions such as transport and storage, because existing common heat shrink films material transparent degree is not high, heat shrink films especially for packaging pop can cannot highlight product, owing to all needing at present to adopt appearance printing treatment, improve the publicity of internal packaging product, product is publicized intuitively for playing, need the product that diaphaneity is higher, existing heat shrink films cannot meet the demands in this respect.
Summary of the invention
In order to solve the problem, the invention provides the slim transparent overwrap shrink film of a kind of pop can and production method, its diaphaneity is good, and after packaging product, product logo is clear, and proof strength, reduces costs simultaneously, and production method is simple, raises the efficiency.
Its technical scheme is such: the slim transparent overwrap shrink film of a kind of pop can, it is characterized in that, it comprises upper epidermis, interlayer and layer, described upper epidermis, layer raw material weight proportioning are identical, the raw material weight proportioning of described upper epidermis, layer is made up of following: high pressure polyethylene 20-40 part, low pressure polyethylene 25-40 part, metallocene polyethylene 35-45 part; The raw material weight proportioning of described interlayer is made up of following: high pressure polyethylene 20-25 part, low pressure polyethylene 25-35 part, the rare 5-15 part of linear low density polyethylene, metallocene polyethylene 10-25 part.
It is further characterized in that, in the raw material of described upper epidermis, layer: high pressure polyethylene is BASF-YPC 2426D, and low pressure polyethylene is the 5621D of shell, metallocene polyethylene Exxon Mobil ENABLE2703;
In the raw material of described interlayer: high pressure polyethylene is BASF-YPC 1810D, low pressure polyethylene is the SP3505 of Mitsui Chemicals, and linear low density polyethylene is rare for raising sub-petrochemical industry 7042, and metallocene polyethylene is Exxon Mobil ENABLE2703.
A production method for the slim transparent overwrap shrink film of pop can, it is characterized in that, it comprises the following steps:
(1) raw material is taken by weight;
(2) by three screw-type extruders extrude rotating discharge after the raw material of upper epidermis, interlayer and layer enters three central feeding rotating die heads respectively:
The raw material of layer enters the central feeding rotating die head that temperature is 120 DEG C, through 10-15min heat plasticizing raw material obtain heat material, plasticizing after heat material by screw rod rotary extrusion to highly be 30cm 5mm gap in enter transition body;
The raw material of interlayer enters the central feeding rotating die head that temperature is 140 DEG C, through 10-15min heat plasticizing raw material obtain heat material, plasticizing after heat material by screw rod rotary extrusion to highly be 40cm 5mm gap in enter transition body;
The raw material of layer enters the central feeding rotating die head that temperature is 160 DEG C, through 10-15min heat plasticizing raw material obtain heat material, plasticizing after heat material by screw rod rotary extrusion to highly be 50cm 5mm gap in enter transition body;
(3) the heat material of upper epidermis, interlayer and layer is complex as a whole voluntarily and enters regulating ring in transition body, evenly die gap is adjusted by screw, the film bubble of the heat material be complex as a whole voluntarily is cooled automatically by two wind air-supply ring overtemperature, film bubble is by the thickness of longitudinal traction adjustment film, adjust the wide cut of horizontal inflation adjustment film, mould bubble, through collapser sizing, obtains external packing shrink film.
After adopting the solution of the present invention, by production method production department's external packing shrink film easily, raise the efficiency, the external packing shrink film thickness produced is 0.04mm, thickness step-down, reduces costs, and adds diaphaneity by the change of formulation ratio simultaneously, after packaging product, product logo is clear, simultaneously proof strength.
Detailed description of the invention
Embodiment one: the slim transparent overwrap shrink film of a kind of pop can, it comprises upper epidermis, interlayer and layer, upper epidermis, layer raw material weight proportioning are identical, the raw material weight proportioning of upper epidermis, layer is made up of following: BASF-YPC 2426D high pressure polyethylene 20-40 part, 5621D low pressure polyethylene 25-40 part of shell, Exxon Mobil ENABLE2703 metallocene polyethylene 35-45 part, be specially BASF-YPC 2426D high pressure polyethylene 30 parts, the 5621D low pressure polyethylene 30 parts of shell, Exxon Mobil ENABLE2703 metallocene polyethylene 40 parts; The raw material weight proportioning of interlayer is made up of following: BASF-YPC 1810D high pressure polyethylene 25 parts, and the SP3505 low pressure polyethylene 35 parts of Mitsui Chemicals raises rare 15 parts of sub-petrochemical industry 7042 linear low density polyethylene, Exxon Mobil ENABLE2703 metallocene polyethylene 25 parts.
Production method comprises the following steps:
(1) raw material is taken by weight;
(2) by three screw-type extruders extrude rotating discharge after the raw material of upper epidermis, interlayer and layer enters three central feeding rotating die heads respectively:
The raw material of layer enters the central feeding rotating die head that temperature is 120 DEG C, through 12min heat plasticizing raw material obtain heat material, plasticizing after heat material by screw rod rotary extrusion to highly be 30cm 5mm gap in enter transition body;
The raw material of interlayer enters the central feeding rotating die head that temperature is 140 DEG C, through 12min heat plasticizing raw material obtain heat material, plasticizing after heat material by screw rod rotary extrusion to highly be 40cm 5mm gap in enter transition body;
The raw material of layer enters the central feeding rotating die head that temperature is 160 DEG C, through 12min heat plasticizing raw material obtain heat material, plasticizing after heat material by screw rod rotary extrusion to highly be 50cm 5mm gap in enter transition body;
(3) the heat material of upper epidermis, interlayer and layer is complex as a whole voluntarily and enters regulating ring in transition body, evenly die gap is adjusted by screw, the film bubble of the heat material be complex as a whole voluntarily is cooled automatically by two wind air-supply ring overtemperature, film bubble is by the thickness of longitudinal traction adjustment film, adjust the wide cut of horizontal inflation adjustment film, mould bubble, through collapser sizing, obtains external packing shrink film.
Embodiment two: the slim transparent overwrap shrink film of a kind of pop can, it comprises upper epidermis, interlayer and layer, upper epidermis, layer raw material weight proportioning are identical, the raw material weight proportioning of upper epidermis, layer is made up of following: BASF-YPC 2426D high pressure polyethylene 20-40 part, 5621D low pressure polyethylene 25-40 part of shell, Exxon Mobil ENABLE2703 metallocene polyethylene 35-45 part, be specially BASF-YPC 2426D high pressure polyethylene 35 parts, the 5621D low pressure polyethylene 35 parts of shell, Exxon Mobil ENABLE2703 metallocene polyethylene 30 parts; The raw material weight proportioning of interlayer is made up of following: BASF-YPC 1810D high pressure polyethylene 25 parts, and the SP3505 low pressure polyethylene 35 parts of Mitsui Chemicals raises rare 15 parts of sub-petrochemical industry 7042 linear low density polyethylene, Exxon Mobil ENABLE2703 metallocene polyethylene 25 parts.
Production method comprises the following steps:
(1) raw material is taken by weight;
(2) by three screw-type extruders extrude rotating discharge after the raw material of upper epidermis, interlayer and layer enters three central feeding rotating die heads respectively:
The raw material of layer enters the central feeding rotating die head that temperature is 120 DEG C, through 15min heat plasticizing raw material obtain heat material, plasticizing after heat material by screw rod rotary extrusion to highly be 30cm 5mm gap in enter transition body;
The raw material of interlayer enters the central feeding rotating die head that temperature is 140 DEG C, through 15min heat plasticizing raw material obtain heat material, plasticizing after heat material by screw rod rotary extrusion to highly be 40cm 5mm gap in enter transition body;
The raw material of layer enters the central feeding rotating die head that temperature is 160 DEG C, through 15min heat plasticizing raw material obtain heat material, plasticizing after heat material by screw rod rotary extrusion to highly be 50cm 5mm gap in enter transition body;
(3) the heat material of upper epidermis, interlayer and layer is complex as a whole voluntarily and enters regulating ring in transition body, evenly die gap is adjusted by screw, the film bubble of the heat material be complex as a whole voluntarily is cooled automatically by two wind air-supply ring overtemperature, film bubble is by the thickness of longitudinal traction adjustment film, adjust the wide cut of horizontal inflation adjustment film, mould bubble, through collapser sizing, obtains external packing shrink film.
The external packing shrink film intensity that the present invention obtains is good, longitudinal strength >=15Mpa, transverse strength >=70Mpa, diaphaneity is good, directly uses packaging, can be easy to see inner packing product thing logo clearly through external packing shrink film, clear, understand, due to the change of formula, lower thickness, can reduce productive costs 35%.
Claims (4)
1. the slim transparent overwrap shrink film of pop can, it is characterized in that, it comprises upper epidermis, interlayer and layer, described upper epidermis, layer raw material weight proportioning are identical, the raw material weight proportioning of described upper epidermis, layer is made up of following: high pressure polyethylene 20-40 part, low pressure polyethylene 25-40 part, metallocene polyethylene 35-45 part; The raw material weight proportioning of described interlayer is made up of following: high pressure polyethylene 20-25 part, low pressure polyethylene 25-35 part, according to the rare 5-15 part of linear low density polyethylene, and metallocene polyethylene 10-25 part.
2. the slim transparent overwrap shrink film of a kind of pop can according to claim 1, it is characterized in that, in the raw material of described upper epidermis, layer: high pressure polyethylene is BASF-YPC 2426D, low pressure polyethylene is the 5621D of shell, metallocene polyethylene Exxon Mobil ENABLE2703.
3. the slim transparent overwrap shrink film of a kind of pop can according to claim 1, it is characterized in that, in the raw material of described interlayer: high pressure polyethylene is BASF-YPC 1810D, low pressure polyethylene is the SP3505 of Mitsui Chemicals, linear low density polyethylene is rare for raising sub-petrochemical industry 7042, and metallocene polyethylene is Exxon Mobil ENABLE2703.
4. a production method for the slim transparent overwrap shrink film of pop can, it is characterized in that, it comprises the following steps:
(1) raw material is taken by weight;
(2) by three screw-type extruders extrude rotating discharge after the raw material of upper epidermis, interlayer and layer enters three central feeding rotating die heads respectively:
The raw material of layer enters the central feeding rotating die head that temperature is 120 DEG C, through 10-15min heat plasticizing raw material obtain heat material, plasticizing after heat material by screw rod rotary extrusion to highly be 30cm 5mm gap in enter transition body;
The raw material of interlayer enters the central feeding rotating die head that temperature is 140 DEG C, through 10-15min heat plasticizing raw material obtain heat material, plasticizing after heat material by screw rod rotary extrusion to highly be 40cm 5mm gap in enter transition body;
The raw material of layer enters the central feeding rotating die head that temperature is 160 DEG C, through 10-15min heat plasticizing raw material obtain heat material, plasticizing after heat material by screw rod rotary extrusion to highly be 50cm 5mm gap in enter transition body;
(3) the heat material of upper epidermis, interlayer and layer is complex as a whole voluntarily and enters regulating ring in transition body, evenly die gap is adjusted by screw, the film bubble of the heat material be complex as a whole voluntarily is cooled automatically by two wind air-supply ring overtemperature, film bubble is by the thickness of longitudinal traction adjustment film, adjust the wide cut of horizontal inflation adjustment film, mould bubble, through collapser sizing, obtains external packing shrink film.
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| CN201510301604.4A CN104960765A (en) | 2015-06-05 | 2015-06-05 | Thin transparent external packaging shrink film of ring-pull can and production method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018369B2 (en) * | 1977-06-06 | 1985-05-10 | 日産化学工業株式会社 | Photodegradable mulching film |
| CN101049749A (en) * | 2007-04-20 | 2007-10-10 | 上海紫泉标签有限公司 | Heat shrinkage film of high transparent multilaminar polyethylene |
| CN201573373U (en) * | 2009-11-10 | 2010-09-08 | 江阴升辉包装材料有限公司 | Full-plastic multi-layer co-extrusion sheet |
| CN102173160A (en) * | 2010-12-29 | 2011-09-07 | 东莞市正新包装制品有限公司 | Heavy-duty thermal shrinkage polyethylene film and preparation method thereof |
| CN102190824A (en) * | 2010-03-15 | 2011-09-21 | 江苏彩华包装集团公司 | Hot-seal functional stretch film |
| CN103264553A (en) * | 2013-04-28 | 2013-08-28 | 无锡市方成彩印包装有限公司 | Shrink package color film and production method thereof |
-
2015
- 2015-06-05 CN CN201510301604.4A patent/CN104960765A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018369B2 (en) * | 1977-06-06 | 1985-05-10 | 日産化学工業株式会社 | Photodegradable mulching film |
| CN101049749A (en) * | 2007-04-20 | 2007-10-10 | 上海紫泉标签有限公司 | Heat shrinkage film of high transparent multilaminar polyethylene |
| CN201573373U (en) * | 2009-11-10 | 2010-09-08 | 江阴升辉包装材料有限公司 | Full-plastic multi-layer co-extrusion sheet |
| CN102190824A (en) * | 2010-03-15 | 2011-09-21 | 江苏彩华包装集团公司 | Hot-seal functional stretch film |
| CN102173160A (en) * | 2010-12-29 | 2011-09-07 | 东莞市正新包装制品有限公司 | Heavy-duty thermal shrinkage polyethylene film and preparation method thereof |
| CN103264553A (en) * | 2013-04-28 | 2013-08-28 | 无锡市方成彩印包装有限公司 | Shrink package color film and production method thereof |
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Application publication date: 20151007 |