CN102785836A - Ultraviolet resistant transparent food packaging film and preparation method thereof - Google Patents
Ultraviolet resistant transparent food packaging film and preparation method thereof Download PDFInfo
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- CN102785836A CN102785836A CN2012102982763A CN201210298276A CN102785836A CN 102785836 A CN102785836 A CN 102785836A CN 2012102982763 A CN2012102982763 A CN 2012102982763A CN 201210298276 A CN201210298276 A CN 201210298276A CN 102785836 A CN102785836 A CN 102785836A
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Abstract
The invention discloses an ultraviolet resistant transparent food packaging film and a preparation method of the ultraviolet resistant transparent food packaging film. The ultraviolet resistant transparent food packaging film comprises an outer layer and an inner layer, wherein the outer layer and the inner layer are bound through a dual-component polyurethane adhesive added with an ultraviolet absorber. The preparation method comprises the following steps of: fully mixing 0.1-0.5% of 2-hydroxyl-4-methoxy benzophenone and 99.5-99.9% of dual-component polyurethane adhesive by weight; enabling a viscosity cup to be used with a seconds counter, and controlling the viscosity of the adhesive to be 17-25 seconds; applying the prepared adhesive to the contact surface between the outer layer and the inner layer, and controlling the adhesive applying amount to be 2.8-3.8g/m<2>; drying by a compound machine at the temperature of 57-72 DEG C in a way that the temperature is from low to high; and placing the film into a curing chamber, and curing for 24-48h at the temperature of 50-55 DEG C.
Description
Technical field
The present invention relates to the packaging film field, relate in particular to a kind of uvioresistant transparent food packaging film and preparation method thereof.
Background technology
Bread is the staff of life, and food is with An Weixian.Present packaged food on the market is zero all, and food is adding man-hour, and producer is good-looking to attract customer's eyeball for form and aspect, generally all can add natural colouring matter.Common transparent packaging film goods can not produce iris action to ultraviolet ray, and it is long slightly standing time to pack the back with common transparent bag, and the food that has added pigment will variable color, influence outward appearance, and the customer thinks under situation about being ignorant of that food has gone bad and dare not eat.
For antiultraviolet with extend the shelf life, some producers uses Aluminium Foil Package pack, but because aluminium foil is opaque, and the customer can't see bag interior the food of adorning, can't directly with the naked eye discern bag quality of interior product.
In the prior art there be the uvioresistant film passes through on the film top layer coating uvioresistant coating or adopts the purpose made UV-absorbing layer, and production technology is comparatively complicated, and cost is high, does not meet market demand.
Summary of the invention
The objective of the invention is to deficiency, a kind of uvioresistant transparent food packaging film is provided, have anti-ultraviolet function, avoid the food of packaging film and packing aberration to occur, keep original color to prior art.
Another object of the present invention is to provide the preparation method of said uvioresistant transparent food packaging film, manufacture craft is simple, and cost is low.
Above-mentioned purpose of the present invention is achieved through following technical scheme:
A kind of uvioresistant transparent food packaging film comprises skin and internal layer, and outer and internal layer is fitted through the dual-component polyurethane adhesive that is added with ultraviolet absorbent.Said ultraviolet absorbent is 2-hydroxyl-4-methoxy benzophenone.
Because dual-component polyurethane adhesive has good initial adhesion power, good toughness has wash durability simultaneously, the skin and the internal layer of the food package film that is used to fit, make bonding tightr, and waterproof.
Described ultraviolet absorbent adopts 2-hydroxyl-4-methoxy benzophenone, because Heat stability is good, and absorb visible light hardly, and so be highly suitable for the transparent wrapper film, can effectively absorb ultraviolet ray, prevent that the food of packaging film and packing from fading.
The preparation method of said uvioresistant transparent food packaging film comprises the steps:
(1), 2-hydroxyl-4-methoxy benzophenone is added in the dual-component polyurethane adhesive, according to 2-hydroxyl-4-methoxy benzophenone 0.1%-0.5%, the percentage by weight component of dual-component polyurethane adhesive 99.5%-99.9% stirs;
(2), flow cup cooperates stopwatch to use, with the adhesion agent viscosity controller at 17-25 between second;
(3), gluing, the adhesion agent that modulates is coated in the contact surface of outer and internal layer, spread is controlled between the 2.8-3.8 gram/sq m;
(4), compounding machine oven dry, temperature is set to ladder type from low to high, range of temperatures is at 57-72 ℃;
(5), film placed under curing chamber 50-55 ℃ the temperature and is cured, cure time was controlled at 24-48 hour, obtained described uvioresistant transparent food packaging film.
Said step (2) flow cup and stopwatch are used, measure simple, save time, and accurately, at a high speed, be prone to clean.
When gluing, can cause some local multiple less than glue because adhesion agent is too dense, and too rare meeting causes compound fastness to cause delamination inadequately, at 17-25 between second, viscosity is fit to gluing with the adhesion agent viscosity controller.
Compared with prior art; The present invention has following beneficial effect: through in adhesion agent, adding ultraviolet absorbent, coat described adhesion agent in the skin and the internal layer contact position of packaging film, to reach anti-ultraviolet function; Avoid the food of packaging film and packing aberration to occur; Keep original color, manufacture craft is simple, saves production cost.
Description of drawings
Fig. 1 is a cross section structure scheme drawing of the present invention.
The specific embodiment
Below in conjunction with Fig. 1 and specific embodiment the present invention is done further explanation, but embodiment does not do any qualification to the present invention.
A kind of uvioresistant transparent food packaging film comprises skin (1) and internal layer (2), and outer (1) and internal layer (2) are fitted through the dual-component polyurethane adhesive that is added with ultraviolet absorbent.Said ultraviolet absorbent is 2-hydroxyl-4-methoxy benzophenone.
Embodiment 1
The preparation method of said uvioresistant transparent food packaging film comprises the steps:
(1), 2-hydroxyl-4-methoxy benzophenone is added in the dual-component polyurethane adhesive, according to 2-hydroxyl-4-methoxy benzophenone 0.1%, the percentage by weight component of dual-component polyurethane adhesive 99.9% stirs;
(2), flow cup cooperates stopwatch to use, and is 23 seconds with the adhesion agent viscosity controller;
(3), gluing, the adhesion agent that modulates is coated in the contact surface of skin (1) and internal layer (2), spread is 3 sq ms;
(4), compounding machine oven dry, temperature is set to ladder type from low to high, range of temperatures is at 57-72 ℃;
(5), film placed under curing chamber 50--55 ℃ the temperature and is cured, cure time was controlled at 24-48 hour, obtained described uvioresistant transparent food packaging film.
The preparation method of said uvioresistant transparent food packaging film comprises the steps:
(1), 2-hydroxyl-4-methoxy benzophenone is added in the dual-component polyurethane adhesive, according to 2-hydroxyl-4-methoxy benzophenone 0.3%, the percentage by weight component of dual-component polyurethane adhesive 99.7% stirs;
(2), flow cup cooperates stopwatch to use, and is 20 seconds with the adhesion agent viscosity controller;
(3), gluing, the adhesion agent that modulates is coated in the contact surface of skin (1) and internal layer (2), spread is 3.5 sq ms;
(4), compounding machine oven dry, temperature is set to ladder type from low to high, range of temperatures is at 57-72 ℃;
(5), film placed under curing chamber 50--55 ℃ the temperature and is cured, cure time was controlled at 24-48 hour, obtained described uvioresistant transparent food packaging film.
Embodiment 3
The preparation method of said uvioresistant transparent food packaging film comprises the steps:
(1), 2-hydroxyl-4-methoxy benzophenone is added in the dual-component polyurethane adhesive, according to 2-hydroxyl-4-methoxy benzophenone 0.5%, the percentage by weight component of dual-component polyurethane adhesive 99.5% stirs;
(2), flow cup cooperates stopwatch to use, and is 18 seconds with the adhesion agent viscosity controller;
(3), gluing, the adhesion agent that modulates is coated in the contact surface of skin (1) and internal layer (2), spread is 2.8 sq ms;
(4), compounding machine oven dry, temperature is set to ladder type from low to high, range of temperatures is at 57-72 ℃;
(5), film placed under curing chamber 50--55 ℃ the temperature and is cured, cure time was controlled at 24-48 hour, obtained described uvioresistant transparent food packaging film.
Claims (3)
1. a uvioresistant transparent food packaging film comprises skin (1) and internal layer (2), it is characterized in that, outer (1) and internal layer (2) are fitted through the dual-component polyurethane adhesive that is added with ultraviolet absorbent.
2. uvioresistant transparent food packaging film according to claim 1 is characterized in that, said ultraviolet absorbent is 2-hydroxyl-4-methoxy benzophenone.
3. a method for preparing the described uvioresistant transparent food of claim 1-2 packaging film is characterized in that, may further comprise the steps:
(1), 2-hydroxyl-4-methoxy benzophenone is added in the dual-component polyurethane adhesive, according to 2-hydroxyl-4-methoxy benzophenone 0.1%-0.5%, the percentage by weight component of dual-component polyurethane adhesive 99.5%-99.9% stirs;
(2), flow cup cooperates stopwatch to use, with the adhesion agent viscosity controller at 17-25 between second;
(3), gluing, the adhesion agent that modulates is coated in the contact surface of skin (1) and internal layer (2), spread is controlled between the 2.8-3.8 gram/sq m;
(4), compounding machine oven dry, temperature is set to ladder type from low to high, range of temperatures is at 57-72 ℃;
(5), film placed under curing chamber 50-55 ℃ the temperature and is cured, cure time was controlled at 24-48 hour, obtained described uvioresistant transparent food packaging film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012102982763A CN102785836A (en) | 2012-08-21 | 2012-08-21 | Ultraviolet resistant transparent food packaging film and preparation method thereof |
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| CN2012102982763A CN102785836A (en) | 2012-08-21 | 2012-08-21 | Ultraviolet resistant transparent food packaging film and preparation method thereof |
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| CN102785836A true CN102785836A (en) | 2012-11-21 |
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| CN2012102982763A Pending CN102785836A (en) | 2012-08-21 | 2012-08-21 | Ultraviolet resistant transparent food packaging film and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010577A (en) * | 2012-12-12 | 2013-04-03 | 张家港百盛包装材料有限公司 | Anti-static moistureproof shielding bag |
| CN109514974A (en) * | 2018-11-29 | 2019-03-26 | 瑞安复合材料(深圳)有限公司 | Resistance to ultraviolet flexible insulating material of one kind and preparation method thereof |
| CN115651392A (en) * | 2022-11-08 | 2023-01-31 | 江苏东邦科技有限公司 | Ultraviolet-resistant adhesive and preparation method and application thereof |
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| EP1189961B1 (en) * | 1999-07-02 | 2004-02-04 | Henkel Kommanditgesellschaft auf Aktien | Use of polyurethane compositions of low monomer content as pressure sensitive adhesive |
| CN201031024Y (en) * | 2007-02-14 | 2008-03-05 | 台湾励远实业有限公司 | Anti-ultraviolet lamination packaging film |
| CN101306743A (en) * | 2007-10-19 | 2008-11-19 | 河南双汇投资发展股份有限公司 | Packaging film for milk and method for manufacturing same |
| JP2011132354A (en) * | 2009-12-24 | 2011-07-07 | Hitachi Maxell Ltd | Ultraviolet-curing adhesive film |
| CN102277122A (en) * | 2011-03-30 | 2011-12-14 | 烟台联成高分子材料有限公司 | Waterborne polyurethane adhesive and manufacturing method thereof |
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2012
- 2012-08-21 CN CN2012102982763A patent/CN102785836A/en active Pending
Patent Citations (5)
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| EP1189961B1 (en) * | 1999-07-02 | 2004-02-04 | Henkel Kommanditgesellschaft auf Aktien | Use of polyurethane compositions of low monomer content as pressure sensitive adhesive |
| CN201031024Y (en) * | 2007-02-14 | 2008-03-05 | 台湾励远实业有限公司 | Anti-ultraviolet lamination packaging film |
| CN101306743A (en) * | 2007-10-19 | 2008-11-19 | 河南双汇投资发展股份有限公司 | Packaging film for milk and method for manufacturing same |
| JP2011132354A (en) * | 2009-12-24 | 2011-07-07 | Hitachi Maxell Ltd | Ultraviolet-curing adhesive film |
| CN102277122A (en) * | 2011-03-30 | 2011-12-14 | 烟台联成高分子材料有限公司 | Waterborne polyurethane adhesive and manufacturing method thereof |
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| 王苏平 等: "水性聚氨酯粘合剂及其在干法复合中的应用", 《塑料包装》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010577A (en) * | 2012-12-12 | 2013-04-03 | 张家港百盛包装材料有限公司 | Anti-static moistureproof shielding bag |
| CN109514974A (en) * | 2018-11-29 | 2019-03-26 | 瑞安复合材料(深圳)有限公司 | Resistance to ultraviolet flexible insulating material of one kind and preparation method thereof |
| CN115651392A (en) * | 2022-11-08 | 2023-01-31 | 江苏东邦科技有限公司 | Ultraviolet-resistant adhesive and preparation method and application thereof |
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Address after: 515726 Guangdong County of Raoping city of Chaozhou Province spring floating tablets Dong village money Applicant after: GUANGDONG ZHIXIN COLOR PRINTING CO., LTD. Address before: 515726 Guangdong County of Raoping city of Chaozhou Province spring floating tablets Dong village money Applicant before: Raoping Zhixin Color Printing Co., Ltd. |
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Application publication date: 20121121 |