CN1140438C - Technology for making buffer with straw or stalk as main raw material - Google Patents
Technology for making buffer with straw or stalk as main raw material Download PDFInfo
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- CN1140438C CN1140438C CNB02114611XA CN02114611A CN1140438C CN 1140438 C CN1140438 C CN 1140438C CN B02114611X A CNB02114611X A CN B02114611XA CN 02114611 A CN02114611 A CN 02114611A CN 1140438 C CN1140438 C CN 1140438C
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Abstract
The present invention discloses a technology for making buffer pads with straw or stalks as main raw materials. A packing container casing of the pad material is made of paper or plastics and has a hollow cavity structure with thin walls; cores or stalks of the straw of crops are put in the hollow cavity and used as main filling materials; adhesives are used as cementing materials; the packing materials of damping buffer pads with reliable properties are manufactured. The present invention has the advantages of abundant raw material resources, simple and practical manufacturing technology, low equipment investment, high productive efficiency, low energy consumption and low composite cost. The casing can be circularly used or repeatedly recycled; the cementing materials and the core materials can be easily processed and degraded, so the present invention is favorable and harmless for the environment.
Description
Described technical field
The present invention relates to a kind of method for manufacturing of buffer pad packing, particularly a kind ofly make filler with agricultural crop straw, with adhesion agent as affixed material, with the method for other multiple material production buffer pad packing that are shell.
Technical background
At present, a large amount of buffer pad packing that use mostly are foamed plastic such as EPS, EPE on the domestic and international market.These packing are because its non-degradable; It is big to take up room after discarded, recycles difficulty, and uses ozone-depleting material (ODS) such as chloro-fluoro-carbon kind (CFC) foaming agent to destroy atmospheric envelope, thereby is referred to as " white pollution " by people.Eliminate " white pollution ", seek new pollution-freely, nuisanceless and help the packing of environmental protection, become the problem of the common development in countries in the world and the target of pursuit.
Occur now and mainly contain three classes at the substitute products that grind: the one, degradative plastics, promptly with light degradation or biodegradation, or light and bio-degradable.This class material cost height, and degradation effect is undesirable and use very few; The 2nd, paper products divide two kinds of paper pulp molding and honeycomb cardboards, and they still belong to a kind of traditional buffer pad packaged form that damages type by pressure.Its amount of compression is about 10% to reach maxim, is creep state thereafter.Amount of compression surpasses at 70% o'clock, and load sharply rises, and is in the end state that touches.Paper gasket pad nerve is poor, be used for small articles still can, be difficult to use in the buffering package of bigger and heavier product.The paper gasket pad is not water-fast simultaneously, is afraid of to make moist.The 3rd, utilize stalk to add the research that lining cement is made packing.Chinese invention patent application number 99113950X " preparation technology of degradable buffering package material " (following abbreviation preceding paragraph technology); Application for a patent for invention number 99115870.9 " foamed damping, buffering and packing straw fiber material and production methods thereof " (the consequent technology of following abbreviation).The preceding paragraph technology with corncob cellulose or corn and Chinese sorghum stalk core through washing, bleaching, dry, oven dry, add after the liquid starch adhesives mixes the die casting of packing into, oven dry again.It is raw material that consequent technology adopts agricultural crop straw crushed material and polyvinyl alcohol lining cement, adds crosslinking agent, catalyst and foaming agent, through mixing, cross-linking reaction, foaming, cast, baking typing, natural seasoning.These two technology all use stalk as primary raw material, but it is too loaded down with trivial details that the weak point of preceding paragraph technology is technology, use the liquid starch adhesives in the practice, because water ratio height, cause bind strength poor, the difficult energy consumption height that dewaters, the product shrinkage percentage is big, concave-convex surface is coarse, and molding thickness is restricted etc.; Consequent technology uses formaldehyde to make crosslinking agent, HCL or NHO
3Make catalyst, will inevitably bring the discharging of organic volatile (VOC), bring to a certain degree pollution can for work-site and environment.
Summary of the invention
The objective of the invention is in order to overcome the deficiency in the prior art, propose a kind of new agricultural crop straw that utilizes and make the method for bumper and absorbing shock pad package material.
Technical solution of the present invention is achieved in that its making step is as follows:
A. filler (1) is processed in agricultural crop straw oven dry, fragmentation, stalk length generally is controlled at below the 5cm;
B. make the cavity housing (2) of gasket material of paper or thermoplastic plastic;
C. pack into after the filler (1) that makes and adhesion agent (3) being mixed in the housing (2) of gasket material, under 25 ℃～80 ℃ conditions, solidify;
D. with housing seal, promptly making with the agricultural crop straw is filler, and it is affixed to stick with glue agent (3), and shell (2) is the buffer pad material of made of paper or thermoplastic plastic.
The used agricultural crop straw of the present invention mainly comprises: maize straw, reed stalk, sorghum stalk, wheat straw, straw, rice hulls, buckwheat skin, rush, Chinese alpine rush, palm fiber, shredded coconut meat, fiber crops.Wherein, maize straw, reed stalk, sorghum stalk can use by gross weight, also can be with mechanical or manual method except that defoliation and sclerderm, and only stay in the stalk soft core as filler.Sterilization is pretreated if the crops filler need be done deinsectization, and its pretreatment can carry out according to the following steps: water cleans, drug immersion, dehydration, oven dry, or directly with medicament fumigating disinfection, oven dry again.
When making cavity housing (2), can adopt paper pulp molding or cardboard shape by die-cutting with paper; When making cavity housing (2) with thermoplastic plastic, thermoplastic plastic can be selected for use: the vinyl group of plastics of hydrocarbon plastic, polar functionalities, thermoplastic engineering plastic, thermoplastic cellulose class plastics, or above plastics is material modified.Cavity housing (2) surface can be the plane, also can be groove or trellis.The housing wall thickness is generally 0.1～5mm.Housing (2) can be to be made into a whole container, only reserves the inlet point of the crops filler of packing into, and housing (2) also can be two parts or is a plurality of parts.Case material can be selected a kind of material for use, also can use multiple material simultaneously.As: when paper material is used on housing top, just thermoplastic material can be used in its underpart.
Adhesion agent (3) mainly refers to foam glue, emulsion adhesive, hot melt adhesive; Wherein foam glue comprises UF foamed glue, PF foamed glue, MF foamed glue; Emulsion adhesive comprises VA, VAE, PVA, SGA; Hot melt adhesive comprises EVA, PA, PET, PP, PU, and adhesion agent also comprises the modified adhesive of above name kind composition, or above 2～6 kinds mixed and modified adhesion agent.
Wherein, the UF foamed glue by Lauxite, glycerine, bean powder, polyvinyl alcohol, draw back preparation such as powder, ammonium chloride, its proportioning is: Lauxite 40～60%, glycerine 5～8%, bean powder 5～10%, polyvinyl alcohol (10% aqueous system) 10～15% draws back powder 1～5%, ammonium chloride 1～5%, water 10～25%.
Glycerine is used for plasticising, and bean powder and polyvinyl alcohol are used to increase tack and reduce free aldehyde, and bean powder plays the effect of stable foam simultaneously, and ammonium chloride can promote to solidify.
In the buffer pad material cumulative volume of the present invention, stalk accounts for 90%～55%, and foamed glue accounts for 5%～25%, and paper or plastics account for 5%～20%.
Advantage of the present invention is:
1. the product surface that makes is bright and clean, attractive in appearance, core material becomes integral structure, and in-use performance is reliable and stable.
Since a large amount of agricultural crop straws etc. of using as packing material, raw material resources are abundant, and are cheap and easy to get, can effectively replace foamed plastic, cost of product can significantly reduce, after product uses, the recyclable utilization of housing, weighting material and cementing material can be handled on the spot.Stalk is easy to natural degradation, and selected adhesion agent because use amount is little, is easy to degraded, can not work the mischief to environment.
3. use thermoplastic plastic to make the housing of packing container, plastic raw materials about 70% capable of reducing using, simultaneously, thermoplastic plastic and paper products can be recycled repeatedly, meet the policy of China's " minimizing, recycling ".Do not use foaming agent in addition, eliminated because of using the damage the ozone layer discharging of material of chloro-fluoro-carbon kind.Again because the housing volume-diminished also can be saved the spending of transport space and freight charges in a large number.
4. operational path of the present invention is simple, and equipment investment is little, the production efficiency height, and energy consumption and integrated cost are low, and manufacturing process is pollution-free.Product density and foamed plastic are suitable, also can satisfy the requirement of the damping, buffering liner packing of big small item fully.
Description of drawings
Below in conjunction with drawings and Examples the present invention is described in further detail.
Fig. 1 is an axle side scheme drawing of the present invention.
Fig. 2 is the front elevation of Fig. 1.
Fig. 3 is Fig. 2 cutaway view.
Fig. 4 is the axle side scheme drawing of embodiment 2.
Embodiment 1:
Referring to Fig. 1, Fig. 2 and Fig. 3.The method for making of buffer pad material is as follows:
(1) agricultural crop straw is done deinsectization sterilization pretreatment, filler 1 is processed in fragmentation again, and stalk length generally is controlled at below the 5cm;
(2) top and the bottom of the housing 2 of usefulness paperboard gasket material, cavity body that two parts connect, that have groove or trellis that the shape of housing can be processed into as required, the housing wall thickness is about 3mm;
(3) pack into after the filler that makes 1 and VAE emulsion adhesive 3 are mixed in the latter half of housing 2, under 45 ℃～70 ℃ conditions, solidify;
(4) again housing 2 the first half are covered, will two-part up and down joint sealing, promptly making with the agricultural crop straw is filler, and it is affixed to stick with glue agent 3, and shell is a buffer pad material made of paper.
Embodiment 2:
Referring to Fig. 4.The method for making of buffer pad material is as follows:
(1) agricultural crop straw is done deinsectization sterilization pretreatment, filler 1 is processed in fragmentation again, and stalk length generally is controlled at below the 5cmm;
(2) top and the bottom of the housing 2 of usefulness paperboard gasket material, the housing wall thickness is about 3mm;
(3), in the latter half of the housing 2 of packing into after the filler that makes 1 and hot melt agent 3 mixed, solidify at normal temperatures with the melting under 80 ℃～90 ℃ conditions of PET hot melt adhesive;
(4) again the casing upper half branch is covered, will two-part up and down joint sealing, promptly making with the agricultural crop straw is filler, and it is affixed to stick with glue agent 3, and shell is a buffer pad material made of paper.
Embodiment 3:
Referring to Fig. 1, Fig. 2 and Fig. 3.The method for making of buffer pad material is as follows:
(1) cornstalk is handled earlier, removed defoliation, root, the tip, it is some heavy to take out straw core in crusher, and wherein length＜1cm 30%, 1～10cm 55%, and＞10cm 15%.
(2) with polyethylene (melt index (MI) 2.0g/10min, density 0.915g/cm
3) make the housing 2 of thin-walled package container, its volume is 12 * 35 * 5cm, wall thickness is about 0.01cm.Housing 2 can be made into a whole container, only reserves the inlet point of the crops filler of packing into.
(3) get the urea-formaldehyde glue 13.9Kg of content 65%, add in the frothing machine, rotating speed 300r/min, and add glycerine 2Kg, bean powder 3Kg, 10% poly-vinyl alcohol solution 4Kg, draw back powder 0.4Kg (opening with water-soluble in advance), the 5min that gets blisters adds ammonium chloride 0.15Kg (in advance with a little water-soluble opening), 5min again gets blisters, make about 3 times of the increase in volumees of glue, foam stabilization can use.Above-mentioned batching approximately needs water 4Kg.
(4) in weighing 37g cornstalk core is packed the packaging shell that makes into, pour into the foamed glue 3 about 20g that make, oven dry is 2 hours about 70 ℃, make water evaporates, core material is fixed, seals inlet point with lining cement, promptly making with the agricultural crop straw is filler, and shell is the buffer pad material of thermoplastic plastic.
Record the overall 2100cm of being of liner packing that makes
3, polyethylene shell 13.1cm wherein
3, the shared volume of cornstalk core and foamed glue is 2086.9cm
3Respectively account for 0.62% and 99.38% of cumulative volume.Gross weight is 63.99g, and bulk density is 0.030g/cm
3, quite (the eps foam plastic density is at 0.04g/cm with the eps foam goods
3More than be low foaming, foam density is at 0.04g/cm
3Below be high foaming, general EPS gasket material density is 0.03～0.06g/cm
3); The heavily about 12g of its middle shell, stalk 37g, foamed glue 14.99g respectively accounts for 18.74%, 57.82% and 23.44% of total weight.
Claims (9)
1. one kind is the method that primary raw material is made buffer pad with the stalk, and it is characterized in that: making step is as follows:
A. filler (1) is processed in agricultural crop straw oven dry, fragmentation, stalk length is controlled at below the 5cm;
B. make the cavity housing (2) of gasket material of paper or thermoplastic plastic;
C. pack into after the filler that makes and adhesion agent (3) being mixed in the housing (2) of gasket material, under 25 ℃～80 ℃ conditions, solidify;
D. with housing seal, promptly making with the agricultural crop straw is filler (1), and it is affixed to stick with glue agent (3), and shell (2) is the buffer pad material of made of paper or thermoplastic plastic.
2. the method for making buffer pad according to claim 1 is characterized in that: the pretreatment of crop stalk can comprise that also deinsectization disinfects, and water cleans, drug immersion, dehydration, oven dry, or directly with medicament fumigating disinfection, oven dry again.
3. the method for making buffer pad according to claim 1 is characterized in that: when making cavity housing (2) with paper, can adopt paper pulp molding or cardboard shape by die-cutting.
4. the method for making buffer pad according to claim 1, it is characterized in that: the used thermoplastic plastic of housing (2) mainly comprises: the vinyl group of plastics of hydrocarbon plastic, polar functionalities, thermoplastic engineering plastic, thermoplastic cellulose class plastics, or above plastics is material modified.
5. the method for making buffer pad according to claim 1 is characterized in that: agricultural crop straw mainly comprises: maize straw, reed stalk, sorghum stalk, wheat straw, straw, rice hulls, buckwheat skin, rush, Chinese alpine rush, palm fiber, shredded coconut meat, fiber crops.
6. the method for making buffer pad according to claim 1 is characterized in that: adhesion agent mainly refers to foam glue, emulsion adhesive, hot melt adhesive; Wherein foam glue comprises UF foamed glue, PF foamed glue, MF foamed glue; Emulsion adhesive comprises VA, VAE, PVA, SGA; Hot melt adhesive comprises EVA, PA, PET, PP, PU, and adhesion agent also comprises the modified adhesive of above name kind composition, or above 2～6 kinds mixed and modified adhesion agent.
7. the method for making buffer pad according to claim 6, it is characterized in that: the UF foamed glue mainly is by Lauxite, glycerine, bean powder, polyvinyl alcohol, draws back powder, ammonium chloride preparation, its proportioning is: Lauxite 40～60%, glycerine 5～8%, bean powder 5～10%, polyvinyl alcohol (10% aqueous system) 10～15% draws back powder 1～5%, ammonium chloride 1～5%, water 10～25%.
8. the method for making buffer pad according to claim 1 is characterized in that: cavity housing (2) surface can be the plane, also can be groove or trellis; The housing wall thickness is generally 0.1～5mm, and housing (2) can be that an integral body also can be formed by two parts or more than two parts.
9. the method for making buffer pad according to claim 1 is characterized in that: stalk accounts for 90%～55% in the described buffer pad material cumulative volume, and adhesion agent accounts for 5%～25%, and paper or plastics account for 5%～20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02114611XA CN1140438C (en) | 2002-06-05 | 2002-06-05 | Technology for making buffer with straw or stalk as main raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02114611XA CN1140438C (en) | 2002-06-05 | 2002-06-05 | Technology for making buffer with straw or stalk as main raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1397473A CN1397473A (en) | 2003-02-19 |
| CN1140438C true CN1140438C (en) | 2004-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB02114611XA Expired - Fee Related CN1140438C (en) | 2002-06-05 | 2002-06-05 | Technology for making buffer with straw or stalk as main raw material |
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| CN (1) | CN1140438C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443449C (en) * | 2006-03-31 | 2008-12-17 | 南京理工大学 | High-energy powder emulsified explosive and preparation method thereof |
| CN100443450C (en) * | 2006-03-31 | 2008-12-17 | 南京理工大学 | High-energy coal mine permitted powder emulsified explosive and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109438966B (en) * | 2018-10-29 | 2021-08-27 | 叶友岳 | High-strength composite packaging material and preparation method thereof |
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2002
- 2002-06-05 CN CNB02114611XA patent/CN1140438C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443449C (en) * | 2006-03-31 | 2008-12-17 | 南京理工大学 | High-energy powder emulsified explosive and preparation method thereof |
| CN100443450C (en) * | 2006-03-31 | 2008-12-17 | 南京理工大学 | High-energy coal mine permitted powder emulsified explosive and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1397473A (en) | 2003-02-19 |
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