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A method for manufacturing a low-warpage low-temperature thermoplastic resin fixed film

A technology of plastic resin and production method, which is applied in the field of production of low-temperature thermoplastic resin fixing film with low warpage degree, can solve the problems of difficult process and large warpage deformation, and achieves reduction of post-processing difficulty, low warpage degree, and improvement of The effect of the degree of deformation

Active Publication Date: 2021-01-26
广州天泓医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thermoplastic fixed films with complex textures are difficult to carry out subsequent processes due to large warpage and deformation during punching.

Method used

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  • A method for manufacturing a low-warpage low-temperature thermoplastic resin fixed film
  • A method for manufacturing a low-warpage low-temperature thermoplastic resin fixed film
  • A method for manufacturing a low-warpage low-temperature thermoplastic resin fixed film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Mix 80 parts of polycaprolactone, 19.8 parts of PE, and 0.2 parts of DCP crosslinking agent, stir for 15 minutes, and add them into a single-screw extruder for blending and extrusion. The zone is 100°C, the third zone is 125°C, the fourth zone is 135°C, the fifth zone is 140°C, the flange zone is 135°C, and the head is 120°C. The extruded resin film material has a size of about 600mm*600mm.

[0068] The punching method adopts a combination of punching from the inside to the outside, first punching small holes and then punching large holes, first punching single holes and then punching multi-holes. The ratio of multi-holes to single holes is 3:1, and the fixed film is the highest after punching. The point warpage was 1.5 cm.

Embodiment 2

[0070] Mix 75 parts of polycaprolactone, 24.8 parts of PE, and 0.2 parts of DCP crosslinking agent, stir for 15 minutes, and add them into a single-screw extruder for blending and extrusion. The zone is 110°C, the third zone is 135°C, the fourth zone is 135°C, the fifth zone is 140°C, the flange zone is 135°C, the head is 120°C, and the extruded resin film material has a size of about 600mm*600mm.

[0071] The punching method adopts the combination of punching small holes first and then punching large holes, punching single holes first and then punching multiple holes, interspersed punching single holes in the process of punching multiple holes, the ratio of multiple holes to single holes is 8:1, and fixed after punching is completed The highest point warpage of the film was 1.6 cm.

Embodiment 3

[0073] Mix 80 parts of polycaprolactone, 19.7 parts of PE, and 0.3 parts of DCP crosslinking agent, stir for 15 minutes, and add them into a single-screw extruder for blending and extrusion. The zone is 110°C, the third zone is 135°C, the fourth zone is 135°C, the fifth zone is 140°C, the flange zone is 135°C, the head is 120°C, and the extruded resin film material has a size of about 600mm*600mm.

[0074] The punching method adopts the combination of punching small holes first and then punching large holes, punching single holes first and then punching multiple holes, and interspersing punching single holes in the process of punching multiple holes. The ratio of multiple holes to single holes is 6:1. The warpage of the highest point of the fixed film was 1.8 cm.

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Abstract

The invention discloses a manufacturing method of a low-warpage low-temperature thermoplastic resin fixing film. The manufacturing method comprises the following steps: extruding and molding a low-temperature thermoplastic resin raw material into a resin film material; punching holes on the resin film material by using a punch according to a set mesh structure; processing and molding the resin film material with meshes into a resin fixing film with a set shape, wherein the punching is performed according to a combination of one or more of the following methods: 1, punching the holes sequentially from inside to outside; 2, punching small holes and then punching large holes; 3, punching single holes first and then punching multiholes; and 4, punching small holes alternately in the punching process of pushing the multiholes, wherein the ratio of the number of the multiholes to the number of the single holes is set to be 2-8: 1. According to the manufacturing method, multiple punching methods are combined, the obtained fixing film is low in warping degree and does not exceed 2 cm, the deformation degree of the fixing film is improved, and the later processing difficulty is reduced.

Description

technical field [0001] The application belongs to the technical field of medical equipment consumables, and in particular relates to a method for manufacturing a low-warpage low-temperature thermoplastic resin fixing film. Background technique [0002] Low-temperature thermoplastic material is a kind of polymer material, which has the advantages of low softening point, repeatable shape, certain fixed strength, light and breathable, good X-ray permeability, and easy biodegradation. It is widely used in the medical field. At present, it has been widely used in orthopedic surgery fixation, radiotherapy positioning, orthopedic braces and rehabilitation braces, etc. It is easy for doctors to operate and use. [0003] As the application fields become more and more extensive, the needs of doctors and patients are becoming more and more precise. For example, low-temperature thermoplastic fixation films often need to be made into fixation films with different opening patterns, differ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D7/01
CPCB29D7/01
Inventor 梁秋严何海杨振肖吉玉
Owner 广州天泓医疗科技有限公司