Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Production method for medical pressure-sensitive adhesive tape or sheet

A technology of pressure-sensitive adhesive tape and pressure-sensitive adhesive, which is applied in the medical and health field, can solve problems such as seepage, achieve the effect of eliminating print-through problems and enhancing viscosity recovery

Inactive Publication Date: 2013-01-23
NITTO DENKO CORP
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general, it is preferable to use the direct method in order to reduce the production cost, but in the case of using a porous substrate as the supporting substrate, if the direct method is used, there may be a problem that the solution for forming the pressure-sensitive adhesive layer penetrates into the porous substrate And cause print-through and the solution for forming the pressure-sensitive adhesive layer to bleed to the back of the porous substrate

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
  • Production method for medical pressure-sensitive adhesive tape or sheet

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] The alkyl (meth)acrylate (alkyl (meth)acrylate) used as the main component monomer in the step of preparing the monomer mixture for emulsion polymerization in the production method of the present invention is used for the pressure of the finally obtained The sensitive adhesive is an adhesive-imparting component, and an alkyl ester having an alkyl group having a carbon number of 1 or more and preferably 15 or less is used. Specific examples thereof include alkyl (meth)acrylates having a straight-chain or straight-chain alkyl group, such as methyl ester, ethyl ester, butyl ester, pentyl ester, hexyl ester, heptyl ester, octyl ester, nonyl ester, decyl ester, Undecyl and tridecyl esters. These can be used alone or in combination of two or more. Among them, n-octyl ester, isooctyl ester, 2-ethylhexyl ester, n-nonyl ester, and isononyl ester are preferably used from the viewpoint of exhibiting good pressure-sensitive adhesive properties as a medical pressure-sensitive adhes...

Embodiment 1

[0048]Add 0.03 parts by weight of 1 - dodecyl mercaptan, 2 parts by weight of polyoxyethylene lauryl ether ammonium sulfate and 36 parts by weight of water, and then the whole solution was emulsified by a high-speed mixer to obtain a monomer emulsion.

[0049] Next, 4 parts by weight of monomer emulsion, 1 part by weight of polyoxyethylene lauryl ether ammonium sulfate and 46 parts by weight of water were charged into a reaction vessel equipped with a cooling pipe, nitrogen inlet pipe, thermometer and stirrer, and nitrogen was introduced While stirring the mixture for 1 hour. Subsequently, 0.1 part by weight of 2,2'-azobis[N-(2-carboxyethyl)-2-methylpropionamidine]hydrate was charged, and the reaction was allowed to proceed at 60°C for 1 hour. Then, 104 parts by weight of the monomer emulsion obtained above was continuously added dropwise over 4 hours to thereby perform emulsion polymerization, and the resulting solution was aged for 3 hours to obtain a water-dispersed copoly...

Embodiment 2

[0053] Except that the monomer mixture for emulsion polymerization in Example 1 was changed to include 100 parts by weight of 2-ethylhexyl acrylate, 4 parts by weight of acrylic acid and 0.02 parts by weight of 3-methacryloxypropyltrimethoxysilane The monomer mixture, and polyoxyethylene lauryl ether ammonium sulfate as an emulsifier is added to the monomer emulsion in an amount of 1 part by weight and added to the outside of the reaction vessel in 2 parts by weight, to be the same as in Example 1 The medical pressure-sensitive adhesive tape of the present invention is manufactured in a manner.

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a production method for a medical pressure-sensitive adhesive tape or sheet. In the method for producing the medical pressure-sensitive adhesive tape or sheet of the invention, a water dispersion-type copolymer solution having a specific composition is used. Therefore, the problem caused by high thixotropy can be eliminated and a pressure-sensitive adhesive layer can be relatively easily formed on a porous substrate by a direct method. In addition, when the medical pressure-sensitive adhesive tape or sheet obtained by the method of the invention is attached to the skin surface, skin adhesion and tube fixing are excellent and at the same time, irritation to skin is low.

Description

technical field [0001] The invention relates to a method for manufacturing a medical pressure-sensitive adhesive tape or sheet. More particularly, the present invention relates to medical pressure-sensitive adhesive tapes or sheets for use in the medical and health field, such as pressure-sensitive adhesive bandages, medical tapes, first-aid plasters, jumbo plasters, dressing materials and a method of making poultices. Background technique [0002] In general, with regard to medical pressure-sensitive adhesive tapes or sheets (hereinafter, sometimes collectively referred to as medical pressure-sensitive adhesive tapes), various products have been developed, including first-aid adhesive plasters and roll-up adhesive tapes (medical tapes), and Pressure-sensitive adhesive bandages for immobilizing affected areas, wound covering materials for covering and protecting injured areas, poultices or percutaneous absorption tape preparations for the purpose of treating local or system...

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): A61F13/02C09J133/08C09J133/10C08F220/18C08F230/08
CPCA61L15/58A61L24/001A61L24/046C09J133/064C08F220/1808C08L33/10C08L33/08C08L33/12C08F220/06C08F230/085
Inventor 村田达哉菊田典之滨田昌志内藤友也丸罔伸明
Owner NITTO DENKO CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com