CN1385294A - Non-memory cold variable plastic article prepared by extension - Google Patents
Non-memory cold variable plastic article prepared by extension Download PDFInfo
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- CN1385294A CN1385294A CN 01118001 CN01118001A CN1385294A CN 1385294 A CN1385294 A CN 1385294A CN 01118001 CN01118001 CN 01118001 CN 01118001 A CN01118001 A CN 01118001A CN 1385294 A CN1385294 A CN 1385294A
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Abstract
The present invention relates to a non-memory cold-deformable plastic product. It can be prepared by using single plastic material, and is characterized by that it can use a semicrystalline of crystalline thermoplastic plastic semifinished product and makes it undergo the process of extension treatment under the condition of that the temp. is less than melting point of said semifinished product to make the original elasticity of said semifinished product fade away to obtain the invented product. Said invented product can be a binding wire or tape which can be bent and can be twisted, can be a hollow tube which can be folded and can be used as packaging material or can be an artificial stem which can be bent for supporting any thing.
Description
The invention relates to a kind of non-memory property plastics of the restorability that follows the string, be meant a kind of plastic material that can twist arbitrarily, can subside and fold that has especially.
The plastics Polymer is under the mixing of different proportion, can change the character of itself, for example No. 4797313, Monsanto company US Patent, the Bedford company U.S. No. 5607748, No. 5827461, No. 5989683, promptly prepare the lashing wire that is applied to pack (Twist Tie) of nonmetal character, substitute the coating soft iron silk that is used to pack the binding purposes on the market with PC and ABS alloy or PC and PBT alloy.
J.M.Schultz has described the poly-mer of relevant hemicrystalline (Semi-crystalline) under external force is elongated in the 71-72 page or leaf of Polymer Materials Science book in 1974, the relation of stress and strain.Is the elastic material that meets Hooke's law at initialization phase owing to plastic substance, so this plastic substance has the ability of recovery of elasticity.If continue to increase pulling force, will cause this plastic substance elastic fatigue, can't recover its previous shape.When applying pulling force surpassed the yield point (Yield point) of this plastic substance, this plastic substance began the part and attenuates.If be continuously applied pulling force, the scope of this plastic substance local refinement is more and more, until the limit of refinement.At this moment, this plastic substance then ruptures as if stressed again.If change with phase (morphology), the molecule of this plastic substance its amorphous region (amorphous area) under pulling force continues to increase is elongated gradually, and is tending towards more preceding more Methodistic arrangement.If poly-mer is not subjected to external force during crystallization, with the no desirable crystal orientation or the orientation (orientation) of molecule.Poly-mer is carried out and is extended (drawing) under the external force load, and then crystal or molecule begin to align.Poly-mer is if the highly crystalline body then extends the crystallinity (degree of crystallinity) that can not influence it.But poly-mer is if low-crystalline, then extends the percentum that can increase crystallization with respect to extension person not.
Arrangement is not had in addition directed extension of Polymer of rule, can make molecule become well-regulated arrangement, and increase its mechanical strength.When for example syntheticfibres or glued membrane are done the constant temperature extension below melt temperature, be more regularly arranged, promptly increase the percentum of crystallization, and make its mechanical strength increase at bearing of trend.If only do unidirectional extension, in the intensity of its bearing of trend significant increase is arranged, but then be torn easily along this direction.As make twocouese and extend, then all can increase mechanical strength in direction in length and breadth.Polypropylene screen is the exemplary of two-way extension (bi-orientation), and it has the pulling strengrth of lifting and keeps flexibility.The finished product of using elongation technology is still possessed elasticity at present.
The present invention changes material energy rank with external force, utilizes the energy rank to change its rerum natura and reaches new application purpose.The heat energy that plastic substance has after heat hot is melted, quilt is cooling curing rapidly, so transfer this heat energy partly to crystal energy, promote the energy rank of material, utilize cold extension processing of the present invention again, improve the crystallinity of plastic substance with mechanical force, make the plastic substance restorability that follows the string, become and to twist arbitrarily, can subside and folding non-memory property plastic material.
The present invention relates to a kind of non-memory property cold variable plastic article for preparing by extension, it can use the unitary plastic material and prepare.
Preferable, this non-memory property cold variable plastic article is be used to bundle bent and line (Wire) that can twist or band (Tape), one hollow tubular that collapses that is used to pack, or a bent fine strip shape thing that is used to support (for example bennet of artificial flower).
The present invention also relates to a kind of manufacture method of non-memory property cold variable plastic article, comprise a hemicrystalline or crystalline thermoplastic plastics half-blank added to give extending in the temperature that is lower than this half-blank fusing point the former elasticity that has of this half-blank is disappeared in fact, so become non-memory property cold variable plastic article.
The present invention also relates to a kind of method that bundlees article, comprise with the of the present invention non-memory property cold variable line (Wire) or band (Tape) volume of a tool suitable length and scratch the tied article of desire; And make this suitable length line or belt two terminal near and twist with the fingers into one.
Preferable, this half-blank at room temperature is extended to 1.5 to 50 times of original length, and is better, 5 to 30 times.
Preferable, this half-blank divides the branch to 5000mm/ with one between 10mm/, and better divides the branch to 1000mm/ between 50mm/, and best divides the speed of dividing to 500mm/ to be extended between 100mm/.
Preferable, this hemicrystalline or crystalline thermoplastic plastics half-blank comprise the homopolymer (homopolymer of an ehtylenically unsaturatemonomer) of an ethylene unsaturated monomers, polyethylene for example, polypropylene, or polyvinylchloride.
Preferable, this hemicrystalline or crystalline thermoplastic plastics half-blank comprise by two or multiple ethene insatiable hunger close formed co-polymer of monomer copolymerizable or terpolymer (terpolymer).
Preferable, this hemicrystalline or crystalline thermoplastic plastics half-blank comprise one and are selected from polyamide, polycarbonate (polycarbonate), poly terephthalic acid time ethyl ester (polyethyleneterephthalate, be called for short PET) and poly terephthalic acid time butyl ester (polybutyleneterephthalate is called for short PBT) form the poly-mer of group.
Preferable, this hemicrystalline or crystalline thermoplastic plastics half-blank are that biology can decompose.
The present invention is by (Extruded) the thermoplastic plastic long strip shape object or the hollow tubular of extrusion molding with common, extend processing, after its yield point of process, still continue to extend, make this long strip shape object or hollow tubular local refinement continue to even refinement, so change its crystallographic property, make the complete obiteration in fact of original elasticity, become and can twist arbitrarily, can subside and folding non-memory property bar or hollow tubular.
Non-memory property plastic article of the present invention except that applicable to the packing binding purposes, also can be applicable to stem or other decorative use of similar artificial flower, has advantage attractive in appearance, environmental protection equally.
Except the above-mentioned product that can twist character is arbitrarily used,, then general to use as the hollow tubular finished product of filling thing for subsiding and folding character.The representative type example is the tubulose finished product of filling toothpaste, and light pressure pipe body during use can be extruded toothpaste, and the dentifrice tube external form is still kept flats.This flats partly can be folded or roll, and convenient extruding is next time used.Extrudable pipe shape finished product on the market mainly contains metal level such as aluminium material at present, the puzzlement that still has environmental protection to reclaim, and the present invention then can replace the metal material of this class purposes.
Linear polyethylene (LLDPE), for example the platform in Taiwan gathers the LLDPE of the LL120 of company number, meet ordered No. 1771520 standard of Food and Drug Administration (FDA), additive wherein also obtains checking and approving of associated additives standard simultaneously, therefore but be used in to the LL120 safety and sanitation all packagings for foodstuff, the food when boiling takes up thing etc.And with this LL120 raw material according to the made non-memory property plastic article of the inventive method, will can be used for packaging for foodstuff.
The present invention can use a biological decomposable plastic material to make the fixedly lashing wire of usefulness (Twist tie) of a plant seedlings, so can avoid follow-up lashing wire releasing work.
The present invention can have more non-memory property lashing wire, band or hollow tube material attractive in appearance via extending to process directly to make with the plastic material that has dyeed, and the soft iron Si Gengyi manufacturing of plastics or one deck paper is wrapped in not only outer at present processing, and is easy to the environmental protection recycling.
The applied primary raw material of the present invention is the plastics half-blank that is shaped with the thermal plastic high polymer extrusion, and this half-blank still can be recycled after making non-memory property plastic article via the inventive method and using.For example the non-memory property plastic article of Hui Shouing shreds the back in process, extrusion is shaped and makes plastic product or half-blank again, and this plastic product or half-blank still can be possessed the elasticity of thermal plastic high polymer.At this moment,, its elastic property is disappeared again, can change into and can twist arbitrarily, can subside and folding non-memory property plastic article if according to the inventive method this plastic product or half-blank extension are elongated to 1.5 to 50 times of raw footage again.
Feature of the present invention and technology contents can further be understood by following examples, and these embodiment are the usefulness of casehistory only at this, are not to be used for limiting the scope of the invention.
The Memorability plastic strip is made
Prepare example one:
After getting plastic pellet and forming heat and melt material, again this melt substance is extruded from typing die head (Die), behind over cooling, formed the strip half-blank with the temperature of the fusing point (TM) of high what material.
Prepare example two:
After getting plastic pellet and forming heat and melt material with the temperature of the TM of high what material, this melt substance is extruded from typing die head (Die), stretched and cooling back forms hollow tubular shape half-blank again.
The manufacturing of non-memory property plastic article
Embodiment one:
To prepare the rubber-like plastics bar shaped half-blank that example one produces, and after the sign 2cm length, utilize lacerating machine to extend with 200mm/min speed again, semi-finished length will be elongated several times in room temperature.Its outward appearance of article after the elongation is opaquer than half-blank.Article elastic property after elongating, distortion, folding situation are tested, enumerate partial results in table one.
Table one
A)Code name 8003 is HDPE, Taiwan, and platform is moulded company and is produced; Code name 8010 is HDPE, Taiwan, and platform is moulded company and is produced; Code name LH-901 is HDPE, Taiwan, and the poly-company of platform produces; Code name NAT is PBT, Germany, and BASF AG produces; Code name 2100 is PBT, Taiwan, and artificial resin company in Changchun produces; Code name Sunylon 6N is NYLON, Taiwan, and platform company produces; Code name ST-611 is polypropylene (PP), Taiwan, and the poly-company of good fortune produces; Code name PET, for the pet waste that reclaims mixes the regenerative PET that the epoxy resin as chain extension agent (chain extender) prepares again, Taiwan, the worker grinds the b that chemical industry is produced of institute) M.I. is melting flow index (Melt flow index) c) person's character viscosity (Intrinsic viscosity)
| Plastics a) | Density (g/cm 3) | ????M.I. b)???(g/10min) | Elongate multiple | Elasticity | Distortion | Folding |
| 8003 | ????0.958 | ????0.25 | ????7.5 | Disappear | Can | Can |
| 8010 | ????0.956 | ????1.0 | ????8 | Disappear | Can | Can |
| LH-901 | ????0.956 | ????0.95 | ????8 | Disappear | Can | Can |
| NAT | ????--- | ????33.7 | ????3.5 | Disappear | Can | Can |
| NAT | ????--- | ????33.7 | ????4 | Disappear | Can | Can |
| 2100 | ????1.43 | ????--- | ????4 | Disappear | Can | Can |
| Sunylon 6N | ????1.13 | ????10 | ????3 | Disappear | Can | Can |
| ST-611 | ????0.898 | ????1.8 | ????7.5 | Disappear | Can | Can |
| PET | ????1.05 c) | ????6 | Disappear | Can | Can |
Embodiment two:
To use HDPE (table one, code name 8003) according to preparing the elastomeric hollow tubular half-blank of tool that example two methods produce, after indicating 2cm length, utilize lacerating machine at room temperature to extend again, and half-blank length is elongated 8 times to 16cm with the speed that 200mm/ divides.The more former finished product of its outward appearance of hollow tube article after the elongation is opaquer, and elastic property disappears, and can twist arbitrarily, can subside and folding hollow tube and become.
Embodiment three:
To after the sign 2cm length, in a heating furnace, do pre-processing according to preparing the elastomeric plastics bar shaped of the tool half-blank that example one method produces, and take out the back and extend with lacerating machine, half-blank length will be elongated 4-15 times to 8-30cm at once with various temperature.Its outward appearance of strip article after the elongation is opaquer than half-blank, and the elastic property disappearance, becomes the plastics strip article that can twist arbitrarily, fold.With its reverse staggered after, place different probe temperatures to observe and reverse staggered whether the disappearance.The results are shown in table two.
Table two
A)With table; C) do not carry out pre-processing b) placed 100 ℃ of boiling water 10 minutes or placed under-10 ℃ and preserved 24 hours
| Plastics a) | The pre-processing temperature | Probe temperature b) | Reverse situation |
| 8010 | ????-- c) | ????100℃ | Constant |
| 8010 | ????-- c) | ????-10℃ | Constant |
| 8010 | ????100℃ | ????100℃ | Disappear |
| 8010 | ????0℃ | ????100℃ | Constant |
| PET | ????-- c) | ????100℃ | Constant |
| NAT | ????-- c) | ????100℃ | Constant |
| ST-611 | ????-- c) | ????100℃ | Constant |
Embodiment four:
The strip article that can twist arbitrarily with the HDPE of code name 8010 preparation in embodiment one of 10cm length are placed in 100 ℃ of boiling water heating 10 minutes, its length becomes 9.2cm (shortening 8%), heated again 10 minutes, its length becomes 9.15cm (length cocondensation short 8.5%), and the character that can twist arbitrarily, fold is constant.
This case contriver once with the non-memory property plastic article of the part of above embodiment gained, cut into pieces, heat is melted, and formed a recirculation product through over cooling again, and it still possesses the elasticity of plastics.This recycled product is extended elongation to its elastic property disappear, can change the non-memory property plastic article that can twist arbitrarily, fold again into.
Claims (25)
1. one kind is passed through to extend the non-memory property cold variable plastic article for preparing.
2. as claimed in claim 1 a kind of by extending the non-memory property cold variable plastic article for preparing, it is characterized in that: be used to bundle bent and the line (Wire) that can twist or band (Tape), one hollow tubular that collapses that is used to pack, or a bent fine strip shape thing that is used to support.
3. as claimed in claim 1 a kind of by extending the non-memory property cold variable plastic article prepare, it is characterized in that: the former elasticity that has of this half-blank is disappeared in fact be produced by a hemicrystalline or crystallinity thermoplastic material half-blank are added to give extending in the temperature that is lower than this half-blank fusing point.
4. as claimed in claim 3 a kind of by extending the non-memory property cold variable plastic article for preparing, it is characterized in that: this half-blank is 1.5 to 50 times that are extended under room temperature or rising temperature to original length.
5. as claimed in claim 4 a kind of by extending the non-memory property cold variable plastic article for preparing, it is characterized in that: this half-blank is extended under room temperature or rising temperature to 5 to 30 times of original length.
6. as claimed in claim 3 a kind of by extending the non-memory property cold variable plastic article for preparing, it is characterized in that: this half-blank divides the speed of dividing to 5000mm/ to be extended with one between 10mm/.
7. as claimed in claim 6 a kind of by extending the non-memory property cold variable plastic article for preparing, it is characterized in that: this half-blank divides the speed of dividing to 1000mm/ to be extended with one between 50mm/.
8. as claimed in claim 6 a kind of by extending the non-memory property cold variable plastic article for preparing, it is characterized in that: this half-blank divides the speed of dividing to 500mm/ to be extended with one between 100mm/.
9. as claimed in claim 3 a kind of by extending the non-memory property cold variable plastic article for preparing, it is characterized in that: this half-blank comprises the homopolymer of an ethylene unsaturated monomers.
10. as claimed in claim 9 a kind of by extending the non-memory property cold variable plastic article for preparing, it is characterized in that: this homopolymer is a polyethylene, polypropylene, or polyvinylchloride.
11. as claimed in claim 3 a kind of by extending the non-memory property cold variable plastic article prepare, it is characterized in that: this half-blank comprise by two or multiple ethene insatiable hunger close formed co-polymer of monomer copolymerizable or terpolymer.
12. it is as claimed in claim 3 a kind of by extending the non-memory property cold variable plastic article for preparing, it is characterized in that: this half-blank comprises one and is selected from polyamide, ethyl ester (polyethyleneterephthalate) stretched by polycarbonate (polycarbonate), poly terephthalic acid two and poly terephthalic acid two is stretched the poly-mer that butyl ester (polybutyleneterephthalate) is formed group.
13. as claimed in claim 3 a kind of by extending the non-memory property cold variable plastic article for preparing, it is characterized in that: this half-blank is that biology can decompose.
14. the manufacture method of a non-memory property cold variable plastic article, it is characterized in that: comprise a hemicrystalline or crystallinity thermoplastic material half-blank added to give extending in the temperature that is lower than this half-blank fusing point the former elasticity that has of this half-blank is disappeared in fact, so become non-memory property cold variable plastic article.
15. method that bundlees article, it is characterized in that: comprise a hemicrystalline or crystallinity thermoplastic material half-blank added to give extending in the temperature that is lower than this half-blank fusing point the former elasticity that has of this half-blank is disappeared in fact, so become the line or belt of non-memory property cold variable; This line or belt volume with a suitable length is scratched the tied article of desire; And make this suitable length line or belt two terminal near and twist with the fingers into one.
16. as claim 14 or 5 described methods, it is characterized in that: this half-blank is extended under room temperature or rising temperature to 1.5 to 50 times of original length.
17. method as claimed in claim 16 is characterized in that: this half-blank is extended under room temperature or rising temperature to 5 to 30 times of original length.
18. as claim 14 or 15 described methods, it is characterized in that: this half-blank divides the speed of dividing to 5000mm/ to be extended with one between 10mm/.
19. method as claimed in claim 18 is characterized in that: this half-blank divides the speed of dividing to 1000mm/ to be extended with one between 50mm/.
20. method as claimed in claim 19 is characterized in that: this half-blank divides the speed of dividing to 500mm/ to be extended with one between 100mm/.
21. as claim 14 or 15 described methods, it is characterized in that: this half-blank comprises the homopolymer of an ethylene unsaturated monomers.
22. method as claimed in claim 21 is characterized in that: this homopolymer is a polyethylene, polypropylene, or polyvinylchloride.
23., it is characterized in that as claim 14 or 15 described methods: this half-blank comprise by two or multiple ethene insatiable hunger close the formed co-polymer of monomer copolymerizable.
24. as claim 14 or 15 described methods, it is characterized in that: this half-blank comprises one and is selected from polyamide, ethyl ester (polyethylene terephthalate) stretched by polycarbonate (polycarbonate), poly terephthalic acid two and poly-terephthaldehyde two stretches the poly-mer that butyl ester (polybutylene terephthalate) is formed group.
25. as claim 14 or 15 described methods, it is characterized in that: this half-blank is that biology can decompose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01118001 CN1385294A (en) | 2001-05-14 | 2001-05-14 | Non-memory cold variable plastic article prepared by extension |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01118001 CN1385294A (en) | 2001-05-14 | 2001-05-14 | Non-memory cold variable plastic article prepared by extension |
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| CN1385294A true CN1385294A (en) | 2002-12-18 |
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| CN 01118001 Pending CN1385294A (en) | 2001-05-14 | 2001-05-14 | Non-memory cold variable plastic article prepared by extension |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429265C (en) * | 2004-04-07 | 2008-10-29 | 程前珍 | Fixed plastic strip and production thereof |
| CN113165778A (en) * | 2018-12-12 | 2021-07-23 | 有限会社纤维浜松 | Binding tool |
-
2001
- 2001-05-14 CN CN 01118001 patent/CN1385294A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429265C (en) * | 2004-04-07 | 2008-10-29 | 程前珍 | Fixed plastic strip and production thereof |
| CN113165778A (en) * | 2018-12-12 | 2021-07-23 | 有限会社纤维浜松 | Binding tool |
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