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

Making method of surface protection film

A surface protective film and a manufacturing method technology, which can be applied to flat products, household appliances, other household appliances, etc., can solve the problems such as the inability to supply the material for forming the adhesive layer, the inability to obtain the surface protective film, etc., and achieve the effect of excellent adhesion characteristics.

Inactive Publication Date: 2013-08-21
NITTO DENKO CORP
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in order to form an adhesive layer, when the adhesive layer forming material is prepared by dry-blending SEBS and a tackifying resin, and then supplied to an extruder for melt extrusion, the tackifying resin is powdery. , the adhesive layer forming material cannot be stably supplied to the extruder because the tackifying resin scatters or adheres to the wall surface of the supply port or the screw of the extruder, etc. Adhesive layer, so a surface protection film with stable quality cannot be obtained
In addition, even if the tackifying resin is in the form of pellets, when it is in the vicinity of the supply port of the extruder, it will be pulverized by the screw to become powder, and the same problem will occur.

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
  • Making method of surface protection film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Low-density polyethylene (NOVATEC LD LF547 manufactured by Nippon Polyethylene Co., Ltd.) was used as the thermoplastic resin in the substrate layer forming material, and styrene-butadiene-benzene was used as the block copolymer in the adhesive layer forming material. A hydrogenated product of an ethylene block copolymer (SEBS, manufactured by Shell Chemical Co., Ltd., trade name "KRATON G1657"), and an alicyclic petroleum-based resin (manufactured by Arakawa Chemical Industry Co., Ltd., trade name "ARCON P-100").

[0048] First, SEBS and an alicyclic petroleum resin were melt-blended in accordance with the compounding ratio shown in Table 1 to prepare pre-kneaded pellets. Then, pre-kneaded pellets and SEBS pellets were dry-blended according to the compounding ratio shown in Table 1 so that the content ratio of the alicyclic petroleum resin in the adhesive layer was 28.5% by weight, and an adhesive layer was prepared. The forming material was supplied to the extruder s...

Embodiment 2

[0050] According to the mixing ratio shown in Table 1, SEBS and cycloaliphatic petroleum resin are melt-blended to make pre-kneaded granules, and the pre-kneaded granules and SEBS granules are dry-blended according to the mixing ratio shown in Table 1. Except for this, it carried out similarly to Example 1, and manufactured the surface protection film (2) which has a base material layer (thickness 60 micrometers) and an adhesive layer (thickness 15 micrometers).

Embodiment 3

[0052] According to the mixing ratio shown in Table 1, SEBS and cycloaliphatic petroleum resin are melt-blended to make pre-kneaded granules, and the pre-kneaded granules and SEBS granules are dry-blended according to the mixing ratio shown in Table 1. Except for this, it carried out similarly to Example 1, and manufactured the surface protection film (3) which has a base material layer (thickness 60 micrometers) and an adhesive layer (thickness 15 micrometers).

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
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for making a surface protection film having a segmented copolymer containing SEBS and the like and a tackifying resin through co-extrusion molding. The surface protection film made through the method has the advantages of excellent adhesion characteristic, good molding operationality, and stable quality. The making method of the surface protection film is characterized in that the surface protection film having a substrate layer and the adhesive layer is made through the co-extrusion of a substrate layer forming material containing a thermoplastic resin and the adhesive containing the segmented copolymer and the tackifying resin, all the tackifying resin and at least parts of the segmented copolymer undergo melt blending according to a case that the content of the tackifying resin is 60-83wt% in order to obtain particles, and the particles and the residual adhesive layer are supplied to an extruder to form the adhesive layer, and the content of the tackifying resin in the adhesive layer is below 40wt%.

Description

technical field [0001] The present invention relates to a method for producing a surface protection film. Specifically, the present invention relates to a method for producing a surface protection film having excellent adhesive properties, good molding workability, and stable quality. The surface protective film obtained by the production method of the present invention can be used for transportation, processing, It is used for the purpose of sticking to the surface of these members for protection during aging, etc. Background technique [0002] When transporting, processing, aging, etc. metal plates, painted metal plates, aluminum alloy frames, resin plates, decorative steel plates, vinyl chloride laminated steel plates, glass plates, etc., in order to prevent surface contamination or contamination of these components damage, use a surface protection film. [0003] The surface protection film usually has a structure in which an adhesive layer is provided on one side of a...

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
IPC IPC(8): B29C47/06B29L7/00
Inventor 武田公平生岛伸祐山户二郎
Owner NITTO DENKO CORP
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com