CN101229690B - Method of processing low-temperature thermoplastic material - Google Patents
Method of processing low-temperature thermoplastic material Download PDFInfo
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- CN101229690B CN101229690B CN2007100264546A CN200710026454A CN101229690B CN 101229690 B CN101229690 B CN 101229690B CN 2007100264546 A CN2007100264546 A CN 2007100264546A CN 200710026454 A CN200710026454 A CN 200710026454A CN 101229690 B CN101229690 B CN 101229690B
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Abstract
The invention relates to a method for processing low temperature thermoplastic material. The method for processing the low temperature thermoplastic material provided by the invention includes the following steps: A) extruding and forming is included: granular material of the low temperature thermoplastic material is manufactured as low temperature thermoplastic plate by a regular extruding method; the formed low temperature thermoplastic plate is heated to a softening point or above the softening point; when preshrink temperature is 60-100 DEG C, preshrink time is 4-1 minutes; when the preshrink temperature is 100-150 DEG C, the preshrink time is 2-1 minutes; when the preshrink temperature is above 150 DEG C, the preshrink time is 1.5-1 minutes; C) cooling is also included: the obtained material is cooled to 30-35 DEG C; D) softening and molding are included: under about 65 DEG C, the material is softened and molded into any shapes according to the regular method. By adopting the method for processing the low temperature thermoplastic material, the processed low temperature thermoplastic plate can not shrink and deform at all when being used by the operators.
Description
Technical field
The present invention relates to a kind of processing method of thermoplastic material, especially relate to a kind of processing method of low-temp thermoplastic material.
Background technology
Low-temp thermoplastic material is a kind of macromolecular material, and its characteristics are can soften and be moulded arbitrary shape under the temperature about 65 ℃, thereby can be applied to medical domain.Because low-temp thermoplastic material has softening at low temperatures, plasticity is strong, light weight, have certain intensity, be easy to bondingly, X-ray permeability is good, the doctor is easy to operate, can biodegradation after discarded etc. advantage, be widely used in Orthopeadic Surgery at present and fixed, made orthopedic brace and rehabilitation brace etc.
Normally the particulate material of low-temp thermoplastic material is manufactured sheet material with the way of extruding.In use, the sheet material of cutting out put into hot water heating about 65 ℃ after, promptly can fashion into Any shape.But owing to adding man-hour, curling strand can be forced to stretch along certain direction.So when cooled sheet material was heated to softening temperature again, strand just can curl again, sheet material just can shrink along the direction that is forced to stretch.Like this, sheet material will be out of shape, and is unfavorable for that the operator operates.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of processing method of low-temp thermoplastic material is provided, to solve the problem of low temperature thermo-plastic planking easy contraction distortion when heating.
The processing method of a kind of low-temp thermoplastic material of the present invention may further comprise the steps:
A) extrusion molding: the particulate material of low-temp thermoplastic material is manufactured the low temperature thermo-plastic planking with conventional extrusion molding;
B) the pre-contraction: the low temperature thermo-plastic planking of forming is heated to its softening point or more than the softening point; When pre-contraction temperature was 100-150 ℃, the contraction time was 2-1 minute in advance, and temperature is high more, and the time is corresponding short more; When pre-contraction temperature is more than 150 ℃ the time, the contraction time is 1.5-1 minute in advance;
C) cooling: be cooled to 30-35 ℃;
D) softening moulding: softening according to a conventional method and be moulded arbitrary shape under the temperature about 65 ℃.
The processing method of low-temp thermoplastic material of the present invention, preferably, among the step B, described pre-contraction heating means are for to toast heating to the low temperature thermo-plastic planking.More preferably, the temperature of described pre-contraction baking heating is 100-210 ℃.When toasting heating, the heating-up temperature on low temperature thermo-plastic planking surface can not be above 210 ℃.
The processing method of low-temp thermoplastic material of the present invention, preferably, among the step C, the method for cooling is 20-25 ℃ of cooling 8-10 minute naturally, or is placed in the water cooling 2-3 minute.
Compared with prior art, adopt the processing method of low-temp thermoplastic material of the present invention, the low temperature thermo-plastic planking of forming is heated to it more than softening point in advance, sheet material is shunk in advance.Through pre-shrunk low temperature thermo-plastic planking, strand has been in rolled state, and when heating, sheet material does not significantly shrink performance again, also just makes the low temperature thermo-plastic planking no longer contraction distortion when the operator uses after the processing.
The specific embodiment
Embodiment one:
77 parts of polycaprolactones, 23 parts of haloflexes are mixed, 130-160 ℃ of granulation, under 90-150 ℃ of condition the granulation material is extruded into sheet material then, this sheet material is a kind of of low temperature thermo-plastic planking, and its softening point is 60-65 ℃.The sheet material that is extruded into, be placed in the metal tray, place 60 ℃ hot water storgae to heat 3 minutes, then, pallet is taken out.Sheet material was at room temperature cooled off 8-10 minute naturally, treat sheet material cooling after, be cut into needed specification, can pack warehouse-in.
Definite through testing, when pre-contraction temperature was 60 ℃, the contraction time was 2.5-4 minute in advance; When pre-contraction temperature was 70 ℃, the contraction time was 2-3 minute in advance; When pre-contraction temperature was 100 ℃, the contraction time was 1-2 minute in advance.
Embodiment two:
70 parts of polycaprolactones, 30 parts of polyethylene are mixed, 130-160 ℃ of granulation, under 90-150 ℃ of condition the granulation material is extruded into sheet material then, this sheet material is a kind of of low temperature thermo-plastic planking, and its softening point is 60-65 ℃.The sheet material of extrusion molding, place on the metal tray, send in the oven and in 150 ℃ environment temperature, heated 2 minutes, then, pallet is taken out.Sheet material was soaked in running water 2 minutes, treat sheet material cooling after, be cut into needed specification, can pack warehouse-in.
Definite through testing, when pre-contraction temperature was 100-150 ℃, the contraction time was 2-1 minute in advance, and temperature is high more, and the time is corresponding short more.
Embodiment three:
70 parts of polycaprolactones, 15 parts of polyethylene and 15 parts of calcium carbonate are mixed, 130-160 ℃ of granulation, under 90-150 ℃ of condition the granulation material is extruded into sheet material then, this sheet material is a kind of of low temperature thermo-plastic planking, and its softening point is 60-65 ℃.The sheet material of extrusion molding, place on the metal tray, send in the oven and in 210 ℃ environment temperature, heated 1 minute, then, pallet is taken out.Sheet material was soaked in running water 3 minutes, treat sheet material cooling after, be cut into needed specification, can pack warehouse-in.
Definite through testing, when pre-contraction temperature is more than 150 ℃ the time, the contraction time is 1.5-1 minute in advance.
Claims (6)
1. the processing method of a low-temp thermoplastic material is characterized in that, may further comprise the steps:
A) extrusion molding: the particulate material of low-temp thermoplastic material is manufactured the low temperature thermo-plastic planking with conventional extrusion molding;
B) the pre-contraction: the low temperature thermo-plastic planking of forming is heated to its softening point or more than the softening point; When pre-contraction temperature was 100-150 ℃, the contraction time was 2-1 minute in advance, and temperature is high more, and the time is corresponding short more; When pre-contraction temperature is more than 150 ℃ the time, the contraction time is 1.5-1 minute in advance;
C) cooling: be cooled to 30-35 ℃;
D) softening moulding: softening according to a conventional method and be moulded arbitrary shape under the temperature about 65 ℃.
2. the processing method of low-temp thermoplastic material according to claim 1, it is characterized in that: among the step B, described pre-contraction heating means are for to toast heating to the low temperature thermo-plastic planking.
3. the processing method of low-temp thermoplastic material according to claim 2 is characterized in that: the temperature of described pre-contraction baking heating is 100-210 ℃.
4. according to the processing method of claim 2 or 3 described low-temp thermoplastic materials, it is characterized in that: when shrinking the baking heating in advance, the heating-up temperature on low temperature thermo-plastic planking surface can not be above 210 ℃.
5. the processing method of low-temp thermoplastic material according to claim 1 is characterized in that: among the step C, the method for cooling is 20-25 ℃ of cooling 8-10 minute naturally
6. the processing method of low-temp thermoplastic material according to claim 1 is characterized in that: among the step C, the method for cooling is to be placed in the water cooling 2-3 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100264546A CN101229690B (en) | 2007-01-22 | 2007-01-22 | Method of processing low-temperature thermoplastic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100264546A CN101229690B (en) | 2007-01-22 | 2007-01-22 | Method of processing low-temperature thermoplastic material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101229690A CN101229690A (en) | 2008-07-30 |
| CN101229690B true CN101229690B (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100264546A Active CN101229690B (en) | 2007-01-22 | 2007-01-22 | Method of processing low-temperature thermoplastic material |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698743B (en) * | 2009-09-11 | 2012-03-28 | 广州科莱瑞迪医疗器材有限公司 | Low-temperature thermoplastic material and preparation method thereof |
| CN110584861A (en) * | 2019-10-10 | 2019-12-20 | 广州天泓医疗科技有限公司 | Orthopedics fixing brace that facilitates use |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0473047B1 (en) * | 1990-08-28 | 1994-12-21 | Stanley Electric Co., Ltd. | Method of manufacturing optical compensator |
| CN1197424A (en) * | 1996-05-03 | 1998-10-28 | 巴克斯特国际有限公司 | Heat setting of medical tubings |
-
2007
- 2007-01-22 CN CN2007100264546A patent/CN101229690B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0473047B1 (en) * | 1990-08-28 | 1994-12-21 | Stanley Electric Co., Ltd. | Method of manufacturing optical compensator |
| CN1197424A (en) * | 1996-05-03 | 1998-10-28 | 巴克斯特国际有限公司 | Heat setting of medical tubings |
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| Publication number | Publication date |
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| CN101229690A (en) | 2008-07-30 |
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Address after: 510730 14 to six Sha Wan, San Jie, Guangdong economic and Technological Development Zone, Guangzhou economic and Technological Development Zone Patentee after: Guangzhou kelairuidi medical equipment Limited by Share Ltd Address before: LAN Guangzhou economic and Technological Development Zone, Guangdong province Guangzhou city four street 510730 No. 9 Guangzhou science and Technology Park 1 building 4 floor Patentee before: Kelairuidi Medical Appliances Co., Ltd., Guangzhou City |
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