CN103290741B - A kind of preparation comprising the packaging material of string and foamed plastic waste - Google Patents
A kind of preparation comprising the packaging material of string and foamed plastic waste Download PDFInfo
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- CN103290741B CN103290741B CN201310239667.2A CN201310239667A CN103290741B CN 103290741 B CN103290741 B CN 103290741B CN 201310239667 A CN201310239667 A CN 201310239667A CN 103290741 B CN103290741 B CN 103290741B
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Abstract
Comprise packaging material and the preparation of string and foamed plastic waste, belong to field of packaging material.Comprise 50 ~ 100 mass fraction strings, 50 ~ 100 mass fraction waste foamed poly styrene plastic particles, 10 ~ 25 mass fraction adhesives and 10 ~ 25 mass fraction water repellent agents; The particle diameter of foamed poly styrene plastic particle is between 0.3 ~ 1.0 millimeter; Adhesive is at least one in carboxymethyl cellulose and polyvinyl alcohol, and the mass ratio of carboxymethyl cellulose and polyvinyl alcohol is (0 ~ 50): (100 ~ 50), and water repellent agent is Lauxite or melamine resin.By wet moulding principle and the method for paper mould, string and the waste foamed poly styrene particle and additive being crushed to a certain size are dispersed in water, then carry out double dewatering, drying, thermocompression forming, cross cutting.Amortizing packaging material of the present invention has higher WATER RESISTANCE.
Description
Technical field
The present invention relates to a kind of amortizing packaging material, particularly relate to and comprise string and the foamed plastic waste moulded paper pulp product with shock-absorbing capacity and preparation method thereof, belong to field of packaging material.
Background technology
Paper mould is main raw material with string, adds some auxiliary material, adopt special forming method to carry out shaping, through operations such as super-dry, hot pressing integer and cross cuttings, obtain designed special shape goods.In recent years, China's moulded paper pulp product is developed rapidly.Originally China's moulded paper pulp product is mainly used in Egg tray, progressively expands to the aspects such as industrial instruments, electronic devices and components, household electrical appliance and kitchen tools subsequently.Paper mould has good shock resistance, certain resiliency, larger proportion, advantage that is nontoxic, 100% recyclable regeneration of burning.
Styrofoam (EPS) is based on polystyrene resin, adds the additives such as blowing agent and makes, and it uses maximum a kind of padded coamings at present.Polystyrene foam plastics is widely used in the buffering package of various precision instrument, instrument, household electrical appliance etc., also can directly make the packing containers such as cup, dish, box with it and carry out connection with wrapping of piece.Polystyrene foam plastics product volume is huge, and use amount is large, is difficult to decompose, carries out recycling attention to it.
Compared with moulded paper pulp product, expanded polystyrene (EPS) have shock resistance good, have the advantage that good shock-absorbing capacity, proportion are little.But compared with moulded paper pulp product, resource reclaim and the regeneration of expanded polystyrene (EPS) are poor, burning tool virose shortcoming, can't natural decomposition, is the source of white pollution.
The present invention gives full play to the advantage of string; utilize expanded polystyrene (EPS) discarded object; adopt paper pulp molding forming principle and method, make a kind of amortizing packaging material that has a water resisting property comprising string and foamed plastic waste, reach the double action of the utilization of resources and environmental protection.This amortizing packaging material can obtain extensive use in protective packaging field, the unlikely damage in transportation of protection product.
Summary of the invention
The object of the invention is, adopt wet moulding principle and the method for paper mould, string and the waste foamed poly styrene particle and additive being crushed to a certain size are dispersed in water, then carry out double dewatering, sizing, drying and thermocompression forming, preparation comprises the amortizing packaging material of string and foamed plastic waste.
Another object of the present invention is, the amortizing packaging material comprising string and foamed plastic waste of preparation, can substitute expanded polystyrene (EPS), as padded coaming among the protective packaging of goods.
Amortizing packaging material of the present invention has higher WATER RESISTANCE, also may be used for making waterproof amortizing packaging material and goods, overcomes the shortcoming that traditional pulp moulding article does not have a water resisting property.
Present invention employs paper pulp molding forming technology; use it for the compound package material comprising string and foamed plastic discarded object; make this compound package material; both there is buffering package performance; also having a water resisting property can; also help the recovery and reusing and recycling of plastic refuse simultaneously, be conducive to environmental protection and economize on resources.
The present invention adopts the wet process forming method of paper mould, preparation comprise string and waste foamed poly styrene plastic, and preparation amortizing packaging material or goods have a water resisting property, there is novelty and novelty.
The amortizing packaging material that has a water resisting property comprising string and foamed plastic waste of the present invention, it is characterized in that, comprise 50 ~ 100 mass fraction strings, 50 ~ 100 mass fraction waste foamed poly styrene plastic particles, 10 ~ 25 mass fraction adhesives and 10 ~ 25 mass fraction water repellent agents; The particle diameter of foamed poly styrene plastic particle is between 0.3 ~ 1.0 millimeter; Adhesive is at least one in carboxymethyl cellulose and polyvinyl alcohol, the mass percentage of preferably carboxymethyl cellulose in adhesive not higher than 50%, more preferably 30% ~ 50%.Water repellent agent is Lauxite or melamine resin.
The above-mentioned preparation method comprising the amortizing packaging material that has a water resisting property of string and foamed plastic waste is the paper pulp molding forming method adopting double dewatering, comprises following steps:
(1) mixture of string and waste foamed poly styrene plastic particle, is comprised
Under stirring, by solid plant fiber dispersion in water, the mass percent concentration of string, 10% ~ 20%, then adds waste foamed poly styrene particle, adds adhesive and water repellent agent successively, is uniformly mixed;
(2), dehydration and shaping
Said mixture is poured in the mould with screen pack, close die, and crushed filter screen, be clipped in the mixture double dewatering under pressure between two screen packs, water in mixture removes out through filter screen, obtain the composite material containing string and discarded object foam grain and adhesive and water repellent agent, this composite material is hygrometric state solid shape.Generally, containing 45wt% ~ 70wt% moisture (refer to paper pulp fiber moisture, do not comprise foamed plastics).
(3), dry and thermocompression forming
By the composite material that step (2) obtains, place in a mold, carry out drying in an oven, baking temperature is 100 DEG C, in hot press, carry out thermocompression forming, and thermocompression forming temperature is 125 DEG C ~ 150 DEG C, obtains the amortizing packaging material of mold shape.
Owing to comprising expanded polystyrene particle in obtained material, therefore this material has reasonable shock-absorbing capacity, is better than the shock-absorbing capacity of traditional pulp moulding article.
Simultaneously, in the process that this material is dry in a mold, because of between melamine resin and melamine resin and between string and polyvinyl alcohol, chemical crosslink reaction occurs, cause as the hydrophilic radicals such as the cellulose hydroxyl group in string reduce because reacting with the cross-linking chemistry of water repellent agent Lauxite or melamine resin, even do not exist, thus the padded coaming of gained is had a water resisting property energy.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but the scope of protection of present invention is not limited to the scope that embodiment represents.
Embodiment 1
Raw material: bleaching needle-point leaf pulp, beating degree 28 ° of SR.Waste foamed poly styrene foam grain, density is 0.03g/cm
3, after pulverizing, particle is 0.3 millimeter ~ 0.5 millimeter.Adhesive is carboxymethyl cellulose and polyvinyl alcohol.Water repellent agent is melamine resin.
Preparation process and properties of product:
First be dispersed under stirring in 1000 parts of water by 100 parts of bleaching needle-point leaf pulps, being equivalent to pulp density is 10%.Add 100 parts of foamed poly styrene plastic particles, 5 parts of carboxymethyl celluloses, 10 parts of polyvinyl alcohol, 10 parts of melamine resins successively subsequently, be uniformly dispersed, obtain the suspended state mixture comprising bleaching needle-point leaf pulp, foamed poly styrene plastic particle, carboxymethyl cellulose, polyvinyl alcohol, melamine resin and water.
Said mixture is poured in the mould with screen pack, close die, and crushed filter screen, be clipped in the mixture double dewatering under pressure between two screen packs, obtain the hygrometric state solid mixture comprising bleaching needle-point leaf pulp, foamed poly styrene plastic particle, carboxymethyl cellulose, polyvinyl alcohol, melamine resin.
Above-mentioned hygrometric state solid mixture is placed in another mould, carry out drying in an oven, baking temperature is 100 DEG C, thermocompression forming is carried out in hot press, thermocompression forming temperature is 125 DEG C ~ 150 DEG C, obtains the amortizing packaging material of bleaching needle-point leaf pulp and expanded polystyrene foam plastic refuse.This product density is 0.53g/cm
3, shock-absorbing capacity is good; The water absorbent surface quality of product is 5g/m
2, water repelling property is good.
Embodiment 2
Raw material: bleached bamboo pulp, beating degree 32 ° of SR.Waste foamed poly styrene foam grain, density is 0.03g/cm
3, after pulverizing, particle is 0.3 millimeter ~ 0.5 millimeter.Adhesive is carboxymethyl cellulose and polyvinyl alcohol.Water repellent agent is melamine resin.
Preparation process and properties of product:
First be dispersed under stirring in 1000 parts of water by 100 parts of bleached bamboo pulps, being equivalent to pulp density is 10%.Add 100 parts of foamed poly styrene plastic particles, 5 parts of carboxymethyl celluloses, 10 parts of polyvinyl alcohol, 15 parts of melamine resins successively subsequently, be uniformly dispersed, obtain the suspended state mixture comprising bleached bamboo pulp, foamed poly styrene plastic particle, carboxymethyl cellulose, polyvinyl alcohol, melamine resin and water.
Said mixture is poured in the mould with screen pack, close die, and crushed filter screen, be clipped in the mixture double dewatering under pressure of two screen packs, obtain the hygrometric state solid mixture comprising bleached bamboo pulp, foamed poly styrene plastic particle, carboxymethyl cellulose, polyvinyl alcohol, melamine resin.
Above-mentioned hygrometric state solid mixture is placed in another mould, carry out drying in an oven, baking temperature is 100 DEG C, in hot press, carry out thermocompression forming, thermocompression forming temperature is 125 DEG C ~ 150 DEG C, obtains the amortizing packaging material of bleached bamboo pulp and expanded polystyrene foam plastic refuse.This product density is 0.61g/cm
3, shock-absorbing capacity is good; The water absorbent surface quality of product is 5g/m
2, water repelling property is good.
Embodiment 3
Raw material: bleached softwood wood, beating degree 28 ° of SR.Bleached hardwood pulp, beating degree 30 ° of SR.Waste foamed poly styrene foam grain, density is 0.03g/cm
3, after pulverizing, particle is 0.3 millimeter ~ 0.5 millimeter.Adhesive is carboxymethyl cellulose and polyvinyl alcohol.Water repellent agent is melamine resin.
Preparation process and properties of product:
First 30 parts of bleaching needle-point leaf pulps and 70 parts of hardwood pulps are dispersed under stirring in 1000 parts of water, being equivalent to pulp density is 10%.Add 100 parts of foamed poly styrene plastic particles, 5 parts of carboxymethyl celluloses, 10 parts of polyvinyl alcohol, 15 parts of melamine resins successively subsequently, be uniformly dispersed, obtain the suspended state mixture comprising bleached hardwood pulp, bleaching needle-point leaf pulp, foamed poly styrene plastic particle, carboxymethyl cellulose, polyvinyl alcohol, melamine resin and water.
Said mixture is poured in the mould with screen pack, close die, and crushed filter screen, be clipped in the mixture double dewatering under pressure of two screen packs, obtain the hygrometric state solid mixture comprising bleached hardwood pulp, bleaching needle-point leaf pulp, foamed poly styrene plastic particle, carboxymethyl cellulose, polyvinyl alcohol, melamine resin.
Above-mentioned hygrometric state solid mixture is placed in another mould, carry out drying in an oven, baking temperature is 100 DEG C, thermocompression forming is carried out in hot press, thermocompression forming temperature is 125 DEG C ~ 150 DEG C, obtains the amortizing packaging material of bleached hardwood pulp, bleaching needle-point leaf pulp and expanded polystyrene foam plastic refuse.This product density is 0.57g/cm
3, shock-absorbing capacity is good; The water absorbent surface quality of product is 5g/m
2, water repelling property is good.
Embodiment 4
Raw material: bleached wheat straw pulp, beating degree 34 ° of SR.Waste foamed poly styrene foam grain, density is 0.03g/cm
3, after pulverizing, particle is 0.3 millimeter ~ 0.5 millimeter.Adhesive is carboxymethyl cellulose and polyvinyl alcohol.Water repellent agent is melamine resin.
Preparation process and properties of product:
First be dispersed under stirring in 1000 parts of water by 100 parts of bleached wheat straw pulps, being equivalent to pulp density is 10%.Add 100 parts of foamed poly styrene plastic particles, 5 parts of carboxymethyl celluloses, 10 parts of polyvinyl alcohol, 20 parts of melamine resins successively subsequently, be uniformly dispersed, obtain the suspended state mixture comprising bleached wheat straw pulp, foamed poly styrene plastic particle, carboxymethyl cellulose, polyvinyl alcohol, melamine resin and water.
Said mixture is poured in the mould with screen pack, close die, and crushed filter screen, be clipped in the mixture double dewatering under pressure of two screen packs, obtain the hygrometric state solid mixture comprising bleached wheat straw pulp, foamed poly styrene plastic particle, carboxymethyl cellulose, polyvinyl alcohol, melamine resin that paper pulp moisture is 50%.
Above-mentioned hygrometric state solid mixture is placed in another mould, carry out drying in an oven, baking temperature is 100 DEG C, thermocompression forming is carried out in hot press, thermocompression forming temperature is 125 DEG C ~ 150 DEG C, obtains the amortizing packaging material of bleached wheat straw pulp and expanded polystyrene foam plastic refuse.This product density is 0.65g/cm
3, shock-absorbing capacity is good; The water absorbent surface quality of product is 5g/m
2, water repelling property is good.
Embodiment 5
Raw material: deinked pulp, beating degree 37 ° of SR.Waste foamed poly styrene foam grain, density is 0.03g/cm
3, after pulverizing, particle is 0.3 millimeter ~ 0.5 millimeter.Adhesive is carboxymethyl cellulose and polyvinyl alcohol.Water repellent agent is melamine resin.
Preparation process and properties of product:
First be dispersed under stirring in 1000 parts of water by 100 parts of bleached wheat straw pulps, being equivalent to pulp density is 10%.Add 100 parts of foamed poly styrene plastic particles, 5 parts of carboxymethyl celluloses, 10 parts of polyvinyl alcohol, 20 parts of melamine resins successively subsequently, be uniformly dispersed, obtain the suspended state mixture comprising deinked pulp, foamed poly styrene plastic particle, carboxymethyl cellulose, polyvinyl alcohol, melamine resin and water.
Said mixture is poured in the mould with screen pack, close die, and crushed filter screen, be clipped in the mixture double dewatering under pressure of two screen packs, obtain the hygrometric state solid mixture comprising deinked pulp, foamed poly styrene plastic particle, carboxymethyl cellulose, polyvinyl alcohol, melamine resin.
Above-mentioned hygrometric state solid mixture is placed in another mould, carry out drying in an oven, baking temperature is 100 DEG C, thermocompression forming is carried out in hot press, thermocompression forming temperature is 125 DEG C ~ 150 DEG C, obtains the amortizing packaging material of deinked pulp and expanded polystyrene foam plastic refuse.This product density is 0.59g/cm
3, shock-absorbing capacity is good; The water absorbent surface quality of product is 5g/m
2, water repelling property is good.
Above embodiment shows, according to the material comprising string and waste foamed poly styrene foam grain of method of the present invention, there is density ratio lower, shock-absorbing capacity is good, the feature that water repelling property is good, its performance, between moulded paper pulp product and foam plastic product, can be applied to packaging field as amortizing packaging material.
Meanwhile, the present invention takes full advantage of Plastics Packaging Wastes, is conducive to eliminating foamed plastics to the pollution of environment, is also the approach of the effective recovery and reusing and recycling reached packaging waste.
Those skilled in the art should understand, above preferred embodiment just illustrates of the present invention, is not construed as limiting the invention.Can carry out multiple improvement, combination, sub-combination and conversion to it as required, all improvement, combination, sub-combination, conversion and equivalence are replaced and are all fallen within the scope of appended claim.
Claims (3)
1. comprise the preparation method of the amortizing packaging material that has a water resisting property of string and foamed plastic waste, it is characterized in that, its composition comprises 50 ~ 100 mass fraction strings, 50 ~ 100 mass fraction waste foamed poly styrene plastic particles, 10 ~ 25 mass fraction adhesives and 10 ~ 25 mass fraction water repellent agents; The particle diameter of foamed poly styrene plastic particle is between 0.3 ~ 1.0 millimeter; Adhesive is at least one in carboxymethyl cellulose or polyvinyl alcohol, and water repellent agent is Lauxite or melamine resin; Comprise the following steps:
(1) mixture of string and waste foamed poly styrene plastic particle, is comprised
Under stirring, by solid plant fiber dispersion in water, the mass percent concentration of string, 10% ~ 20%, then adds waste foamed poly styrene particle, adds adhesive and water repellent agent successively, is uniformly mixed;
(2), dehydration and shaping
Said mixture is poured in the mould with screen pack, close die, and crushed filter screen, be clipped in the mixture double dewatering under pressure between two screen packs, water in mixture removes out through filter screen, obtain the composite material containing string and discarded object foam grain and adhesive and water repellent agent, this composite material is hygrometric state solid shape;
(3), dry and sizing
By the composite material that step (2) obtains, place in a mold, carry out drying in an oven, baking temperature is 100 DEG C, in hot press, carry out thermocompression forming, and thermocompression forming temperature, at 125 DEG C ~ 150 DEG C, obtains the amortizing packaging material of mold shape.
2. according to the method for claim 1, it is characterized in that, the mass percentage of carboxymethyl cellulose in adhesive be not higher than 50%.
3. according to the method for claim 1, it is characterized in that, the mass percentage of carboxymethyl cellulose in adhesive is 30% ~ 50%.
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| CN201310239667.2A CN103290741B (en) | 2013-06-17 | 2013-06-17 | A kind of preparation comprising the packaging material of string and foamed plastic waste |
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| CN201310239667.2A CN103290741B (en) | 2013-06-17 | 2013-06-17 | A kind of preparation comprising the packaging material of string and foamed plastic waste |
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| CN103290741B true CN103290741B (en) | 2015-08-12 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI125896B (en) * | 2014-09-05 | 2016-03-31 | Upm Kymmene Corp | composite materials |
| FI125895B (en) | 2014-09-05 | 2016-03-31 | Upm Kymmene Corp | composite materials |
| CN105968547A (en) * | 2016-05-19 | 2016-09-28 | 苏州倍力特物流设备有限公司 | Cushion packaging material and preparation method thereof |
| CN106751990A (en) * | 2016-12-11 | 2017-05-31 | 钦州学院 | A kind of plant fiber packing material and preparation method thereof |
| CN108797213A (en) * | 2018-07-25 | 2018-11-13 | 江苏金恒新型包装材料有限公司 | A kind of wrapping paper and preparation method thereof |
| CN113211707A (en) * | 2021-05-21 | 2021-08-06 | 河北强华橡胶制品有限公司 | Method for preparing high-density foam thermal insulation material by using waste foamed thermal insulation material |
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