CN104401064A - Packaging material with moisture absorption function - Google Patents
Packaging material with moisture absorption function Download PDFInfo
- Publication number
- CN104401064A CN104401064A CN201410603315.5A CN201410603315A CN104401064A CN 104401064 A CN104401064 A CN 104401064A CN 201410603315 A CN201410603315 A CN 201410603315A CN 104401064 A CN104401064 A CN 104401064A
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- CN
- China
- Prior art keywords
- layer
- packaging material
- pet
- modified
- drier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
Landscapes
- Wrappers (AREA)
Abstract
The invention discloses a packaging material with a moisture absorption function. The packaging material has a layered structure and comprises a PET layer, an Al layer and a modified PE layer. The Al layer is arranged between the PET layer and the modified PE layer. The modified PE layer is an innermost layer. The modified PE is drying agent-modified PE. The packaging material prepared from the modified PE can effectively realize dehumidification in a drug package, is free of an individual drying agent used in the package and solves problems caused by individual use of the drying agent.
Description
Technical field
The invention belongs to packaging material field, particularly, relate to a kind of packaging material with moisture absorbing.
Background technology
As everyone knows, the factor affecting drug stock control quality mainly contains: several large principal element such as light, air, humidity, temperature, time.So, the storage of usual medicine all will store under the condition of cool place, low humidity, but the medicine self in packaging also along with the growth in storage time, and can discharge moisture gradually, these moisture accumulation are in packaging, the quality of medicine can be had a strong impact on, affect effective storage time of medicine, therefore, we can add drier in packaging usually, so that in time except the moisture in unlap, but in packaging, add drier has following defect to exist:
1. part packaging due to the restriction in space cannot in-built drier time, the storage time that the medicine in it is remained valid shortens greatly,
2., when desiccant package is damaged, the drier powder in it can be caused to disperse, pollute medicine, consumer can be caused even to eat the danger of drier by mistake.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of safe packaging material with moisture absorbing, and does not need to add separately drier in addition again, improves production efficiency, has saved the time.
The present invention's adopted technical scheme that solves the problem is:
A kind of packaging material, have layer structure, comprise pet layer, Al layer and modified PE layer, described Al layer is located between described pet layer and described modified PE layer, and described modified PE layer is innermost layer, wherein, described modified PE is the PE(polyethylene with drier modification).
Wherein, described PET(PETG) layer is made up of the PET oligomer of weight average molecular weight to be the common PET of 15000-25000 and weight average molecular weight be 5000-10000.
Wherein, the mass ratio of described weight average molecular weight to be the common PET of 15000-25000 and weight average molecular weight the be PET oligomer of 5000-10000 is 65:35-87:13, further preferred 73:27-81:19.
The present inventor is found by test of many times, only at the pet layer that the common PET and PET oligomer that adopt aforementioned proportion form, the packaging material obtained just can be made to have higher hot strength and impact strength, and have good surface property, heating expansion and contraction fluctuation little.When selecting the ratio beyond this scope, then can not meet above-mentioned hot strength, impact strength, surface property and the fluctuation of heating expansion and contraction simultaneously and reach preferred values simultaneously.
Wherein, there is with the modified PE layer of drier modification the characteristic of moisture absorption, and internal layer modified PE layer is enclosed in wherein by whole for medicine, realizes the moisture absorption to whole package interior space.
Wherein, described drier is physical absorption drier, any one in further preferred following material: zeolite, silica gel, activated alumina or active carbon, further preferred zeolite.Above-mentioned physical absorption drier due to adsorption rate fast and can rapid adsorption moisture, keep the drying of package interior.
Wherein, the optimal selection zeolite as physical absorption drier is described, the oxide that described zeolite is made up of aluminium, silica, there is alkali alkaline-earth metal, the structure of pore that hydrone enters into three dimensional network structure.Zeolite has natural formation, also to have commercial synthesis.The representatively molecular sieve of synthetic zeolite is the Porous particulate matter for carrying out separate substance according to the difference of molecular size, for having the structure of even pore, adsorbing the Small molecular entered in the cavity of pore, playing the effect of molecular sieve.During drier employing molecular sieve, its absorption bore is preferably 0.35-0.8nm, further preferred 0.42-0.7nm.
Modified PE of the present invention can by by PE resin and drier through extrusion molding or injection mouldings such as plavini, T-shaped modulus methods.
The preferred 30-60 μm of thickness of pet layer of the present invention.
The preferred 50-110 μm of thickness of modified PE layer of the present invention.
The preferred 10-40 μm of thickness of Al of the present invention (aluminium) layer.
To sum up, the invention has the beneficial effects as follows:
1. solving part packaging cannot the dehumidifying problem of medicine of in-built drier due to the restriction in space;
2. due to drier need not be added again in packaging, and avoid desiccant package damaged time the drier powder that brings disperse, pollute medicine and drier by the danger eaten by mistake;
3. eliminate the step of adding drier and sampling observation, can enhance productivity;
4. the comprehensive moisture absorption of package interior, dehumidifying that can be homogeneous, better protects medicine.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiments of the invention and comparative example adopt following raw material:
Common PET-1: Xinhui of Guangdong Province Mei Da-DSM, weight average molecular weight 15000;
Common PET-2: Xinhui of Guangdong Province Mei Da-DSM, weight average molecular weight 20000;
Common PET-3: Xinhui of Guangdong Province Mei Da-DSM, weight average molecular weight 25000;
Common PET-4: Xinhui of Guangdong Province Mei Da-DSM, weight average molecular weight 19000;
Common PET-5: Xinhui of Guangdong Province Mei Da-DSM, weight average molecular weight 30000;
Common PET-6: Xinhui of Guangdong Province Mei Da-DSM, weight average molecular weight 9000;
PET oligomer-1: weight average molecular weight 5000;
PET oligomer-2: weight average molecular weight 10000;
PET oligomer-3: weight average molecular weight 9000;
Layered packaging materials given by the present invention adopts following standard method to carry out performance test:
Hot strength: measure according to tensile property determination method (YBB00112003), test speed (zero load) 100mm/min ± 10mm/min, sample is I type.
Impact strength: cut 150mm × 50mm sample, each 5 of vertical, horizontal.Sample should temperature 23 DEG C ± 2 DEG C, in the environment of relative humidity 50% ± 5%, place more than 4 hours, and test under these conditions, by fixing for sample (modified PE is towards upper) with on falling ball impact test machine fixture, span 100mm, selects steel ball and height of the fall ball by table 1, make steel ball free fall in span central part, vertical, horizontal all must not have more than two breakages.
Table 1
Heating expansion and contraction: get this product in right amount, measure according to heating expansion and contraction determination method (YBB00292004).
Surface property: get this product in right amount, at the bright place of available light, faces range estimation.The situations such as concavo-convex wrinkle of naked-eye observation sample surfaces, and grade, grade as follows:
1 grade: uniform color, surperficial no concave-convex sends out wrinkle, every 100cm
2sample in without brilliant point;
2 grades: color and luster is comparatively even, surface nothing obviously concavo-convex wrinkle, every 100cm
2sample in the crystalline substance point of 1.3mm and below 1.3mm be less than 3;
3 grades: color and luster is comparatively even, surface nothing obviously concavo-convex wrinkle, every 100cm
2sample in the crystalline substance point of 1.3mm and below 1.3mm be less than 5;
4 grades: color and luster is general, and surface energy observes concavo-convex wrinkle a little, every 100cm
2sample in there is the brilliant point of more than 1.3mm.
Water imbibition: preparation size is the sample of 100mm × 100mm, places appropriate medicine at a confined space, the modified PE aspect of sample is placed to medicine, and at 25 DEG C, place 300 hours under the environment of 50% humidity, rate of moisture absorption is tried to achieve in the change of weight per sample.
Embodiment 1-4
Adopt the common PET of mass ratio as shown in table 2 to mix mutually with PET oligomer, under the temperature range of 220-330 DEG C, melt extrude the pet layer of shown thickness;
Modified PE layer in following table 2 is all the PE of the Zeolite modifying adopted, and PE resin and zeolite are extrusion-molded into the modified PE layer of thickness shown in following table 2 through plavini, and the temperature wherein extruded is 180-220 DEG C;
The pet layer of shown thickness, Al layer and modified PE layer is stacked according to this order, laminating is utilized to paste the packaging material described in being formed, and performance test is carried out to the packaging material obtained and is recorded in table 4, and when carrying out water imbibition test, the weight weighing the medicine before and after test is unchanged, illustrate that the moisture pick-up properties of these packaging material is good, effectively can ensure the quality of medicine, do not need to add drier separately.
Comparative example 1-3
The method identical with embodiment 1 is adopted to prepare the packaging material with moisture absorbing, and performance test is carried out to the packaging material obtained and is recorded in table 4, and when carrying out water imbibition test, the weight weighing the medicine before and after test is unchanged, illustrate that the moisture pick-up properties of these packaging material is good, effectively can ensure the quality of medicine, not need to add drier separately.Wherein, the mass ratio of common PET and PET oligomer and the thickness of each layer please consult following table 3 in detail.
Table 2
Table 3
Table 4
Above-described embodiment 1-4 and comparative example 1-3 reflects and adopts the PE layer of Zeolite modifying as packaging material, and have good moisture pick-up properties, rate of moisture absorption is high, completely enough meets the demand of drug packing material.
Embodiment 1-4 reflects packaging material that this formula obtains, and to have the fluctuation range of good hot strength, impact strength, surface property and heating expansion and contraction little.
Above-described embodiment 1 and comparative example 1,2 compare, can find out, when the weight average molecular weight of common PET and/or the mass ratio of common PET and PET oligomer be not in described scope, hot strength, impact strength, surface property reduce obviously, when the weight average molecular weight of common PET is lower, hot strength, impact strength reduce comparatively obvious, and when the weight average molecular weight of common PET is higher and the quality accounting of common PET is slightly high, surface property declines obviously.
When the common PET of described weight average molecular weight and PET oligomer are in the scope of mass ratio of the present invention, the heating expansion and contraction of these obtained packaging material improves obviously, and it is little to fluctuate, substantially fluctuation range is lower than 6%, and the fluctuation of the heating expansion and contraction of the packaging material that the pet layer not in above-mentioned scope obtains is comparatively large, be about about 20%, the fluctuation range of the heating expansion and contraction of the packaging material of formula of the present invention is obviously less, more stable, there is conspicuousness.
As mentioned above, the present invention can be realized preferably.
The above; it is only preferred embodiment of the present invention; not any pro forma restriction is done to the present invention; according to technical spirit of the present invention; within the spirit and principles in the present invention; the any simple amendment that above embodiment is done, equivalently replace and improve, within the protection domain all still belonging to technical solution of the present invention.
Claims (10)
1. packaging material, have layer structure, it is characterized in that, comprise pet layer, Al layer and modified PE layer, described Al layer is located between described pet layer and described modified PE layer, and described modified PE layer is innermost layer, wherein, described modified PE is the PE with drier modification.
2. packaging material as claimed in claim 1, is characterized in that, described pet layer is made up of the PET oligomer of weight average molecular weight to be the common PET of 15000-25000 and weight average molecular weight be 5000-10000.
3. packaging material as claimed in claim 2, is characterized in that, described common PET is 65:35-87:13 with the mass ratio of heavy PET oligomer.
4. packaging material as claimed in claim 3, is characterized in that, described common PET is 73:27-81:19 with the mass ratio of heavy PET oligomer.
5. the packaging material according to any one of Claims 1-4, is characterized in that, drier is physical absorption drier.
6. packaging material as claimed in claim 5, is characterized in that, drier be selected from following material any one: zeolite, silica gel, activated alumina or active carbon.
7. packaging material as claimed in claim 5, is characterized in that, described modified PE layer is obtained by extrusion molding or injection moulding by PE resin and drier.
8. the packaging material according to any one of Claims 1-4, is characterized in that, the thickness of described pet layer is 30-60 μm.
9. the packaging material according to any one of Claims 1-4, is characterized in that, the thickness of described modified PE layer is 50-110 μm.
10. the packaging material according to any one of Claims 1-4, is characterized in that, the thickness of described Al layer is 10-40 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410603315.5A CN104401064A (en) | 2014-10-31 | 2014-10-31 | Packaging material with moisture absorption function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410603315.5A CN104401064A (en) | 2014-10-31 | 2014-10-31 | Packaging material with moisture absorption function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104401064A true CN104401064A (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410603315.5A Pending CN104401064A (en) | 2014-10-31 | 2014-10-31 | Packaging material with moisture absorption function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110667218A (en) * | 2019-09-30 | 2020-01-10 | 昆山威胜干燥剂有限公司 | Environment-friendly high-barrier composite packaging material and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10235817A (en) * | 1997-02-26 | 1998-09-08 | Toppan Printing Co Ltd | Packaging material for plate-like oxygen absorbent and packed body using the packing material |
| CN2378350Y (en) * | 1999-05-20 | 2000-05-17 | 厦门宝龙工业有限公司 | Packing film |
| CN201647358U (en) * | 2010-03-25 | 2010-11-24 | 江阴宝柏包装有限公司 | Easy-uncovered covering film for low-temperature yoghurt |
| CN201922595U (en) * | 2010-11-26 | 2011-08-10 | 哈尔滨上洋包装制品有限公司 | Modified plastic compound automatic packaging film for milk powder package |
| CN202130072U (en) * | 2011-06-30 | 2012-02-01 | 黄山永新股份有限公司 | Composite film for candy package |
| CN103240933A (en) * | 2013-05-22 | 2013-08-14 | 四川汇利实业有限公司 | Biaxially oriented polyester-aluminum-casting polypropylene composite membrane for medicine packaging |
-
2014
- 2014-10-31 CN CN201410603315.5A patent/CN104401064A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10235817A (en) * | 1997-02-26 | 1998-09-08 | Toppan Printing Co Ltd | Packaging material for plate-like oxygen absorbent and packed body using the packing material |
| CN2378350Y (en) * | 1999-05-20 | 2000-05-17 | 厦门宝龙工业有限公司 | Packing film |
| CN201647358U (en) * | 2010-03-25 | 2010-11-24 | 江阴宝柏包装有限公司 | Easy-uncovered covering film for low-temperature yoghurt |
| CN201922595U (en) * | 2010-11-26 | 2011-08-10 | 哈尔滨上洋包装制品有限公司 | Modified plastic compound automatic packaging film for milk powder package |
| CN202130072U (en) * | 2011-06-30 | 2012-02-01 | 黄山永新股份有限公司 | Composite film for candy package |
| CN103240933A (en) * | 2013-05-22 | 2013-08-14 | 四川汇利实业有限公司 | Biaxially oriented polyester-aluminum-casting polypropylene composite membrane for medicine packaging |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110667218A (en) * | 2019-09-30 | 2020-01-10 | 昆山威胜干燥剂有限公司 | Environment-friendly high-barrier composite packaging material and preparation method thereof |
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Application publication date: 20150311 |