CN103287036A - Heat-sealing stone paper - Google Patents
Heat-sealing stone paper Download PDFInfo
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- CN103287036A CN103287036A CN2013102231082A CN201310223108A CN103287036A CN 103287036 A CN103287036 A CN 103287036A CN 2013102231082 A CN2013102231082 A CN 2013102231082A CN 201310223108 A CN201310223108 A CN 201310223108A CN 103287036 A CN103287036 A CN 103287036A
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Abstract
The invention provides a piece of heat-sealing stone paper. The heat-sealing stone paper comprises an upper layer, a middle base layer and a lower layer and is once formed in a general three-layer co-extrusion casting combination manner. The heat-sealing stone paper is characterized in that the mass ratio of the upper layer and the lower layer to the middle base layer is (1-20): (99-80); at least one of the upper layer and the lower layer is a heat-sealing layer, and the other layer is a non-heat-sealing layer; and the middle base layer is a foaming layer or a non-foaming layer. According to the heat-sealing stone paper, the processing process is simplified, the production period is shortened, the number of production personnel is reduced, the manufacturing cost is lowered, and the warehouse space is saved. The heat-sealing stone paper has the characteristics of relatively good stiffness and evenness, light specific gravity, high heat-sealing strength, wide heat-sealing range, firm surface printing property and the like and is suitable for packaging products with the heat-sealing strengths required to be lower than 8-10 N/15 mm.
Description
Technical field
The present invention relates to a kind of heat-sealing stone paper, belong to stone papermaking and plastic manufacturing technology field.
Background technology
Be widely used in the material of packing seed, food and electronic device etc. in the market, mostly adopt in the BOPP film compound behind the seal, or be composited behind curtain coating one deck CPP on the paper, be subjected to the influence of material self to have following deficiency: the one, frosting can be low, and printing is bad; The 2nd, bond properties can not meet the demands (2N/15cm); The 3rd, papermaking, compound, drench in the film production process, the consumption of water, electricity, vapour is bigger, processing cost height, and cause environmental pollution in process of production; The 4th, after paper is compound, can be subjected to the influence of factors such as complex condition, storage environment, and problem such as occur being divided into, break, not only influence result of use, but also can bring corresponding economic loss to the client; The 5th, after paper is compound, can not effective recycling.In sum, existing compound package material exists the wasting of resources big, is unfavorable for problems such as environmental protection.
Summary of the invention
Big for overcoming the wasting of resources that has the packaging material existence now, be unfavorable for problems such as environmental protection, but the invention provides a kind of one-shot forming, surface printing is good, and heat sealability is good, can reclaim plastics, can realize industrial continuous production heat-sealing stone paper, and with it as new packaging material.
The present invention realizes by following technical proposal: a kind of heat-sealing stone paper, by upper strata, middle basic unit and lower floor, form by the compound one-shot forming of the three-layer co-extruded curtain coating of routine, it is characterized in that the upper and lower: the mass ratio of middle basic unit=1～20:99～80, and having one deck in the upper and lower at least is hot sealing layer, all the other are non-hot sealing layer, and middle basic unit is foaming layer or nonfoamed layer, wherein:
Hot sealing layer is one or more among EVA, EAA, mPE, HDPE, LDPE, MDPE, LLDPE, the PP, and weight ratio is 0～4% anti-adhesive agent, and summation is 100%;
Foaming layer is made up of following proportion of masses: inorganic particle 60～80%, synthetic resin 15～35%, aluminic acid ester 0.5～1%, Tissuemat E 1%, paraffin 1%, stearic acid 0.1～1%, DCP initator 0.2%, antioxidant 0.3%, AC blowing agent 0.5～1%, summation are 100%;
Nonfoamed layer and non-hot sealing layer are formed by following proportion of masses: inorganic particle 60～80%, and synthetic resin 15～35%, aluminic acid ester 0.5～1%, Tissuemat E 1%, paraffin 1%, stearic acid 0.1～1%, antioxidant 0.3%, summation are 100%;
Wherein:
Inorganic particle is one or more in Paris white, talcum powder, diatomite, kaolin, the flyash, and several mixing qualities ratio is arbitrarily;
Synthetic resin is a kind of or any two kinds combination among LDPE, LLDPE, HDPE, the PP, and two kinds combination quality ratio is arbitrarily.
Several mixing quality ratio of described hot sealing layer is arbitrarily.
The anti-adhesive agent of described hot sealing layer is one or more in oleamide, erucyl amide, the two fatty acid amide, and several mixing qualities ratio is arbitrarily; Or one or more the filler parent granule in the silica, diatomite, talcum powder.
The gross thickness of described upper strata, middle basic unit and lower floor is 0.05～1mm.
The fineness of the inorganic particle in described foaming layer, nonfoamed layer and the non-hot sealing layer is 800～1250 orders.
Described antioxidant is one or more in Hinered phenols, hindered amines, phosphorous acid esters, thio-based and the complex class, and concrete kind is looked the processability, cost of service life, wholesomeness, the matrix resin of finished product and determined.
Heat-sealing stone paper provided by the invention, prepare in following conventional method: get the raw materials ready in said components and ratio earlier, the material of middle basic unit is by a main extruder, the material on upper strata is by an auxilliary extruder, the material of lower floor is by another auxilliary extruder, after carrying out fusion, plasticizing respectively, be expressed in the mould of same flat T type mouth, mould through same flat T type mouth, with three layers of compound one-shot forming of mode curtain coating of extruding jointly, get compound film sheet, through cooling, stream calendering, side cut, thickness measuring, sided corona treatment, namely obtain sealing stone paper.When producing the product of light specific gravity, after the stream calendering, again through longitudinal stretching, cross directional stretch, side cut, thickness measuring, sided corona treatment get final product.Wherein, sided corona treatment is two-sided sided corona treatment, namely the upper and lower is carried out sided corona treatment simultaneously; Or the single face sided corona treatment, namely only sided corona treatment is carried out on upper strata or lower floor.
The effect that the present invention possesses and advantage: because hot sealing layer of the present invention and middle basic unit are all by one-shot forming, in manufacturing process, saved compound or drenched production technology such as film, thereby simplified processing technology, reduced manufacturing cost, add and do not have middle production link, shorten the production cycle greatly, reduced producers, and saved the storage area.Adopt one-shot forming, fundamentally stopped the problem of compound residual solvent, and the influence of factor such as storage environment, production process can not produce any harmful substance, can not pollute environment, three-waste free discharge, the stone paper after the use can all reclaim makes other plastic products, not only can energy savings, but also reduced user's use cost.Prescription with heat-sealing stone paper provided by the invention, can obtain that deflection is good, good evenness, light specific gravity, heat seal strength height, heat-sealing wide ranges, heat-sealing type stone paper that surface printing is firm, be applicable to the heat seal strength requirement less than the packing articles of 8～10N/15mm (GB/T12026), as: instant food, little daily chemical products, seed packaging etc.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the structural representation of the embodiment of the invention 2.
Among the figure, 1 is hot sealing layer, and 2 are foaming layer, and 3 is hot sealing layer, and 4 is hot sealing layer, and 5 is nonfoamed layer, and 6 is non-hot sealing layer.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described further, be not limited thereto but hold within the present invention.
The heat-sealing stone paper comprises upper strata, middle basic unit and lower floor, and described upper and lower layer is hot sealing layer, and middle basic unit is foaming layer, and the upper and lower layer of mass ratio with middle basic unit is 15:85, i.e. upper strata: the mass ratio of middle basic unit: lower floor=7.5:80:7.5, wherein:
Hot sealing layer is formed by following proportion of masses: 8% LLDPE, 90% PP and 2% oleamide;
Foaming layer is made up of following proportion of masses: fineness is the i.e. DSTP of 0.2% 1076+0.1% of 1250 purpose Paris whites 65%, poly-polypropylene PP 30%, aluminic acid ester 1%, Tissuemat E 1%, paraffin 1%, stearic acid 1%, DCP initator 0.2%, antioxidant 0.3%(), AC blowing agent 0.5%;
Prepare through following conventional method: the material of basic unit's (being foaming layer) in the middle of above-mentioned is sent into a main extruder, the material on upper strata (being hot sealing layer) is sent into an auxilliary extruder, the material of lower floor's (being hot sealing layer) is sent into another auxilliary extruder, carry out conventional fusion respectively, after the plasticizing, be expressed in the mould of same flat T type mouth, common from the mould of flat T type mouth again, with three layers of compound one-shot forming of mode curtain coating of extruding jointly, get compound film sheet, through cooling, the stream calendering, cut edge, thickness measuring, two-sided sided corona treatment, namely obtaining gross thickness is the heat-sealing stone paper of 0.05mm.
The wetting tension of gained heat-sealing stone paper reaches 38mN/m.
The heat-sealing stone paper comprises upper strata, middle basic unit and lower floor, described upper strata is hot sealing layer, and lower floor is non-hot sealing layer, and middle basic unit is foaming layer, and the mass ratio of the upper and lower and middle basic unit is 20:80, i.e. upper strata: the mass ratio of middle basic unit: lower floor=10:80:10; Wherein:
Hot sealing layer is made up of following proportion of masses: the EVA of 46 %, 50% LLDPE and 4% antitack agent (being the talcum powder filler parent granule);
Foaming layer is made up of following proportion of masses: fineness is that 800 purpose calcium carbonate powders and talcum powder respectively are 40%, high density polyethylene 15%, aluminic acid ester 0.5%, Tissuemat E 1%, paraffin 1%, stearic acid 1%, DCP initator 0.2%, antioxidant 0.3%(namely 0.1% 168+0.2% 1010), AC blowing agent 1%;
Non-hot sealing layer is made up of following proportion of masses: fineness be 800 purpose Paris whites 40%, fineness be 800 purpose talcum powder 35%, high density polyethylene 22%, aluminic acid ester 0.6%, Tissuemat E 1%, paraffin 1%, stearic acid 0.1%, antioxidant 0.3%(namely 0.1% 168+0.2% 1010);
Prepare through following conventional method: the material of basic unit's (being foaming layer) in the middle of above-mentioned is sent into a main extruder, the material on upper strata (being hot sealing layer) is sent into an auxilliary extruder, the material of lower floor's (being hot sealing layer) is sent into another auxilliary extruder, carry out conventional fusion respectively, after the plasticizing, be expressed in the mould of same flat T type mouth, common from the mould of flat T type mouth again, with three layers of compound one-shot forming of mode curtain coating of extruding jointly, get compound film sheet, through cooling, the stream calendering, longitudinal stretching, cross directional stretch, cut edge, thickness measuring, the single face sided corona treatment, namely obtaining gross thickness is the heat-sealing stone paper of the light specific gravity of 1mm.
The wetting tension of gained heat-sealing stone paper reaches 42mN/m.
The heat-sealing stone paper comprises upper strata, middle basic unit and lower floor, described the upper and lower are hot sealing layer, middle basic unit is nonfoamed layer, and the mass ratio of upper strata 1 and lower floor 3 and middle basic unit 2 is 1:99, i.e. upper strata: the mass ratio of middle basic unit: lower floor=0.5:90:0.5; Wherein:
Hot sealing layer is made up of following proportion of masses: 50% mPE and 50% LDPE;
Nonfoamed layer is made up of following proportion of masses: fineness is that 950 purpose diatomite and kaolin respectively are 30%, LDPE and LLDPE respectively are 18%, aluminic acid ester 0.9%, Tissuemat E 1%, paraffin 1%, stearic acid 0.8%, antioxidant (1010) 0.3%;
Prepare through following conventional method: the material of basic unit's (being foaming layer) in the middle of above-mentioned is sent into a main extruder, the material on upper strata (being hot sealing layer) is sent into an auxilliary extruder, the material of lower floor's (being hot sealing layer) is sent into another auxilliary extruder, carry out conventional fusion respectively, after the plasticizing, be expressed in the mould of same flat T type mouth, common from the mould of flat T type mouth again, with three layers of compound one-shot forming of mode curtain coating of extruding jointly, get compound film sheet, through cooling, the stream calendering, cut edge, thickness measuring, the single face sided corona treatment, namely obtaining gross thickness is the heat-sealing stone paper of 0.08mm.
The wetting tension of this heat-sealing stone paper reaches 40mN/m.
Embodiment 4
The heat-sealing stone paper comprises upper strata 1, middle basic unit 2 and lower floor 3, described upper strata 1 is hot sealing layer, and lower floor 3 is non-hot sealing layer, and middle basic unit is nonfoamed layer, the mass ratio of upper and lower layer 1,3 and middle basic unit 2 is 20:80, i.e. upper strata: the mass ratio of middle basic unit: lower floor=10:80:10; Wherein:
Hot sealing layer is made up of following proportion of masses: 35% EAA, 40% HDPE and 25% MDPE;
Nonfoamed layer and non-hot sealing layer are formed by following proportion of masses: fineness is 1000 purpose flyash 61%, high density polyethylene 35%, aluminic acid ester 0.9%, Tissuemat E 1%, paraffin 1%, stearic acid 0.8%, antioxidant (1076) 0.3%;
Through the preparation of following conventional method: be foaming layer with the 2(of basic unit in the middle of above-mentioned) material send into a main extruder, upper strata 1(is hot sealing layer) material send into an auxilliary extruder, the 3(of lower floor is hot sealing layer) material send into another auxilliary extruder, carry out conventional fusion respectively, after the plasticizing, be expressed in the mould of same flat T type mouth, common from the mould of flat T type mouth again, with three layers of compound one-shot forming of mode curtain coating of extruding jointly, get compound film sheet, through cooling, the stream calendering, longitudinal stretching, cross directional stretch, cut edge, thickness measuring, the single face sided corona treatment, namely obtaining gross thickness is the heat-sealing stone paper of the light specific gravity of 1mm.
The wetting tension of this heat-sealing stone paper reaches 46mN/m.
Claims (6)
1. one kind seals stone paper, by upper strata, middle basic unit and lower floor, form by the compound one-shot forming of the three-layer co-extruded curtain coating of routine, it is characterized in that the upper and lower: the mass ratio of middle basic unit=1～20:99～80, and having one deck in the upper and lower at least is hot sealing layer, all the other are non-hot sealing layer, and middle basic unit is foaming layer or nonfoamed layer, wherein:
Hot sealing layer is one or more among EVA, EAA, mPE, HDPE, LDPE, MDPE, LLDPE, the PP, and mass ratio is 0～4% anti-adhesive agent, and summation is 100%;
Foaming layer is made up of following proportion of masses: inorganic particle 60～80%, synthetic resin 15～35%, aluminic acid ester 0.5～1%, Tissuemat E 1%, paraffin 1%, stearic acid 0.1～1%, DCP initator 0.2%, antioxidant 0.3%, AC blowing agent 0.5～1%, summation are 100%;
Nonfoamed layer and non-hot sealing layer are formed by following proportion of masses: inorganic particle 60～80%, and synthetic resin 15～35%, aluminic acid ester 0.5～1%, Tissuemat E 1%, paraffin 1%, stearic acid 0.1～1%, antioxidant 0.3%, summation are 100%;
Wherein:
Inorganic particle is one or more in Paris white, talcum powder, diatomite, kaolin, the flyash, and several mixing qualities ratio is arbitrarily;
Synthetic resin is a kind of or any two kinds combination among LDPE, LLDPE, HDPE, the PP, and two kinds combination quality ratio is arbitrarily.
2. heat-sealing stone paper according to claim 1, it is characterized in that: several mixing quality ratio of described hot sealing layer is arbitrarily.
3. heat-sealing stone paper according to claim 1, it is characterized in that: the anti-adhesive agent of described hot sealing layer is one or more in oleamide, erucyl amide, the two fatty acid amide, and several mixing qualities ratio is arbitrarily; Perhaps be in silica, diatomite, the talcum powder one or more.
4. heat-sealing stone paper according to claim 1, it is characterized in that: the gross thickness of described upper strata, middle basic unit and lower floor is 0.05～1mm.
5. heat-sealing stone paper according to claim 1, it is characterized in that: the fineness of described inorganic particle is 800～1250 orders.
6. heat-sealing stone paper according to claim 1, it is characterized in that: described antioxidant is one or more in Hinered phenols, hindered amines, phosphorous acid esters, thio-based and the complex class.
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| CN201310223108.2A CN103287036B (en) | 2013-06-06 | 2013-06-06 | Heat-sealing stone paper |
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| CN201310223108.2A CN103287036B (en) | 2013-06-06 | 2013-06-06 | Heat-sealing stone paper |
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Cited By (6)
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| CN105017631A (en) * | 2015-07-16 | 2015-11-04 | 吴坤山 | Low-density ultra-thin inorganic thin film master batch and preparation method of inorganic thin film |
| CN109551793A (en) * | 2018-12-12 | 2019-04-02 | 福建绿帆医用新材料股份公司 | A kind of production method of low-temperature heat-sealing medical blister packaging film |
| US20190176441A1 (en) * | 2017-12-11 | 2019-06-13 | Hangzhou Keneng New Material Technology Co., Ltd. | Sealing film suitable for food packaging and preparation method thereof |
| WO2020043121A1 (en) * | 2018-08-30 | 2020-03-05 | 杨仲辉 | Artificial composite synthetic paper for improving printing performance, and preparation method therefor |
| CN112693199A (en) * | 2020-12-21 | 2021-04-23 | 张家港永和包装印务有限公司 | Easy cover film of packaging paper container and heat sealing layer thereof |
| JP7227671B1 (en) * | 2022-11-07 | 2023-02-22 | 株式会社Tbm | Laminated sheet and compact |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105017631A (en) * | 2015-07-16 | 2015-11-04 | 吴坤山 | Low-density ultra-thin inorganic thin film master batch and preparation method of inorganic thin film |
| US20190176441A1 (en) * | 2017-12-11 | 2019-06-13 | Hangzhou Keneng New Material Technology Co., Ltd. | Sealing film suitable for food packaging and preparation method thereof |
| US10800147B2 (en) * | 2017-12-11 | 2020-10-13 | Hangzhou Keneng New Material Technology Co., Ltd. | Sealing film suitable for food packaging and preparation method thereof |
| WO2020043121A1 (en) * | 2018-08-30 | 2020-03-05 | 杨仲辉 | Artificial composite synthetic paper for improving printing performance, and preparation method therefor |
| CN109551793A (en) * | 2018-12-12 | 2019-04-02 | 福建绿帆医用新材料股份公司 | A kind of production method of low-temperature heat-sealing medical blister packaging film |
| CN112693199A (en) * | 2020-12-21 | 2021-04-23 | 张家港永和包装印务有限公司 | Easy cover film of packaging paper container and heat sealing layer thereof |
| CN112693199B (en) * | 2020-12-21 | 2023-08-01 | 张家港永和包装印务有限公司 | Easy cover film of packaging paper container and heat sealing layer thereof |
| JP7227671B1 (en) * | 2022-11-07 | 2023-02-22 | 株式会社Tbm | Laminated sheet and compact |
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| CN103287036B (en) | 2015-07-01 |
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