Unlock instant, AI-driven research and patent intelligence for your innovation.

Low-temperature-resistant medical PVC film and preparation method thereof

A PVC film, low temperature-resistant technology, used in pharmaceutical formulations, pharmaceutical science, rayon manufacturing, etc., can solve problems such as inability to exclude human sweat, affecting film transparency, and unfavorable doctor's observation, to promote wound hemostasis and healing, and achieve antibacterial. Performance, good effect of color and yellowing resistance

Pending Publication Date: 2021-03-12
华叙财
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The medical film made of this kind of material has low liquid absorption ability and weak liquid transmission ability. The medical film made cannot eliminate the sweat produced by the human body, and it is easy to cause part of the liquid in contact with the human body to accumulate and affect the transparency of the film. , which is not conducive to the doctor's observation, and will also induce or aggravate the infection of the wounded, and it is not suitable for wounds with a lot of exudate, and the scope of application is narrow

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-temperature-resistant medical PVC film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Preparation of base film:

[0040] Take sodium acetylene to react with 6-chloro-1-hexanol, take the product and add sodium amide for reaction, then react with m-hydroxybenzyl chloride again to obtain product A;

[0041] Take polyvinyl alcohol, add pure water to heat up and dissolve, add vinyl acetate and acetic acid and mix thoroughly to prepare mixed solution C;

[0042] Take polyvinyl chloride, add N,N-dimethylacetamide, α-methylstyrene, product A, and mixed solution C to mix thoroughly, add benzoyl peroxide, and place it at 70°C for 2 hours at a constant temperature , to obtain modified polyvinyl chloride;

[0043] Take modified polyvinyl chloride, add fatty acid sucrose polyester and calcium chloride and put it in the mixing chamber for melting and mixing, set the mixing temperature to 140°C, the rotation speed to 40r / min, the mixing time to 8min, take the product and add N, N-dimethylacetamide, polyethylene glycol, and methanol are fully mixed, then spun, soake...

Embodiment 2

[0052] (1) Preparation of base film:

[0053] Take sodium acetylene to react with 6-chloro-1-hexanol, take the product and add sodium amide for reaction, then react with m-hydroxybenzyl chloride again to obtain product A;

[0054] Take polyvinyl alcohol, add pure water to heat up and dissolve, add vinyl acetate and acetic acid and mix thoroughly to prepare mixed solution C;

[0055] Take polyvinyl chloride, add N,N-dimethylacetamide, α-methylstyrene, product A, and mixed solution C to mix thoroughly, add benzoyl peroxide, and place it at 80°C for 4 hours at a constant temperature , to obtain modified polyvinyl chloride;

[0056] Take modified polyvinyl chloride, add fatty acid sucrose polyester and calcium chloride and put it in the mixing room for melting and mixing. Set the mixing temperature to 145°C, the speed to 42r / min, and the mixing time to 10 minutes. Take the product and add N, N-dimethylacetamide, polyethylene glycol and methanol are fully mixed and then spun, soa...

Embodiment 3

[0065] (1) Preparation of base film:

[0066] Take sodium acetylene to react with 6-chloro-1-hexanol, take the product and add sodium amide for reaction, then react with m-hydroxybenzyl chloride again to obtain product A;

[0067] Take polyvinyl alcohol, add pure water to heat up and dissolve, add vinyl acetate and acetic acid and mix thoroughly to prepare mixed solution C;

[0068] Take polyvinyl chloride, add N,N-dimethylacetamide, α-methylstyrene, product A, and mixed solution C to mix thoroughly, add benzoyl peroxide, and place it at 90°C for constant temperature reaction for 6 hours , to obtain modified polyvinyl chloride;

[0069] Take modified polyvinyl chloride, add fatty acid sucrose polyester and calcium chloride, put it in the mixing room to melt and mix, set the mixing temperature to 150°C, the speed to 45r / min, and the mixing time to 13min, take the product and add N, N-dimethylacetamide, polyethylene glycol, and methanol are fully mixed and then spun, soaked in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a low-temperature-resistant medical PVC film and a preparation method thereof. The film is prepared from a base film and film preparation liquid, wherein the film preparation liquid is arranged above the base film to form an upper sponge layer, and the film preparation liquid is arranged below the base film to form a lower skin layer. According to the invention, a low-temperature-resistant base film framework and the hydrophilic and skin-friendly upper sponge layer and lower skin layer are formed by setting a film structure, components and a preparation process, so thatthe prepared medical film can promote the circulation and transfer of water vapor and prevent liquid under the film from being accumulated while being hydrophilic and water-absorbent; and through thematching of the components and the preparation process, the prepared medical film is endowed with the capabilities of inhibiting bacteria and promoting wound healing, and the flexibility and crease-resistant resilience of the film at low temperature are improved, so that the use comfort of the film is improved.

Description

technical field [0001] The invention relates to the technical field of medical films, in particular to a low-temperature-resistant medical PVC film and a preparation method thereof. Background technique [0002] Traditional medical films are generally made of polyethylene and polyvinyl chloride, which make medical films waterproof and liquid-proof. They are often used in medical protection such as wound dressings and surgical operations, but their defects are also particularly obvious. The medical film made of this kind of material has low liquid absorption ability and weak liquid transmission ability. The medical film made cannot eliminate the sweat produced by the human body, and it is easy to cause part of the liquid in contact with the human body to accumulate and affect the transparency of the film. , It is not conducive to the doctor's observation, and it will also induce or aggravate the infection of the wounded, and it is not suitable for wounds with a lot of exudate...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00D06N3/14A61L15/18A61L15/24A61L15/26A61L15/28A61L15/42A61L15/46D01F1/10D01F6/48D01F11/06
CPCD06N3/0011D06N3/0015D06N3/144D01F6/48D01F1/10D01F1/103D01F11/06A61L15/18A61L15/24A61L15/26A61L15/28A61L15/425A61L15/46D06N2201/0236D06N2209/141D06N2209/1671D06N2209/16D06N2211/18C08L29/04C08L83/04C08L67/04C08L77/04C08L5/04
Inventor 华叙财
Owner 华叙财