Pressure-sensitive adhesive film for laser beam cutting applications

A pressure-sensitive adhesive, pressure-sensitive adhesive layer technology, applied in film/sheet adhesives, applications, laser welding equipment, etc., can solve problems such as laser cutting without processing

Inactive Publication Date: 2016-05-04
NITTO BELGIUM NV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These prior art documents disclosing multilayer constructions of pressure sensitive adhesive films do not deal with the problem of laser cutting and relate to different technical fields (decorative adhesive sheets and semiconductor manufacturing)

Method used

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  • Pressure-sensitive adhesive film for laser beam cutting applications
  • Pressure-sensitive adhesive film for laser beam cutting applications
  • Pressure-sensitive adhesive film for laser beam cutting applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Make the following with figure 1 A PSA film 1 of the same configuration is shown. Specifically, the materials shown in Table 1 were coextruded at a die temperature of 165° C. using a 3-layer coextrusion film blower (inflation method) to produce a three-layer resin film 10 having a total thickness of 75 μm. Table 1 shows the respective compositions and thicknesses of the first layer 12 , the second layer 13 , and the third layer 11 constituting the resin film 10 .

[0063] The abbreviations found in Tables 1 and 2 are explained as follows:

[0064] PO: polyolefin

[0065] PE: Polyethylene

[0066] WHA: made of 60% by weight of titanium dioxide (TiO 2 ) and polyolefin (PO) carrier material white masterbatch

[0067] ABSA: Absorbent masterbatch comprising the commercially available absorbent material BASFLumogen IR1050 and a polyolefin (PO) carrier material.

[0068] ABSB: Absorbent masterbatch comprising commercially available absorbent material LMPE6550 (Polyone) a...

Embodiment 2

[0077] A resin film according to Example 2 was fabricated in the same manner as in Example 1, except that the composition was changed as shown in Table 1 to increase the content of polyolefin while reducing the amount of absorbent material ABSA. Using the produced resin film, an entirely white PSA film according to Example 2 was obtained in the same manner as in Example 1.

Embodiment 3 and 4

[0079] Resin films according to Examples 3 and 4 were produced in the same manner as in Example 1 except that the thickness of the film layer was changed as shown in Table 1. Using these produced resin films, PSA films which were all white according to Examples 3 and 4 were obtained in the same manner as in Example 1.

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Abstract

The present invention provides pressure-sensitive adhesive films with a favourable visual appearance and surface printability without discoloration and burrs on the cutting edge after short-wavelength laser machining. At the same time, the PSA films of the present invention exhibit a favourable cuttability, allowing for high fiber laser as well as carbon dioxide laser cutting speeds. Since the use of the PSA films of the present invention as surface protecting films does not require extensive cleaning and polishing operations after the cutting process and the cutting process itself may be accelerated, the efficiency of laser machining methods may be improved.

Description

technical field [0001] The present invention relates to a pressure sensitive adhesive (PSA) film, in particular, between fibers and CO 2 PSA films suitable for surface protection applications during laser cutting processes. Background technique [0002] Technologies including laser beam processing have been widely used for cutting of various materials, forming holes, and the like. A carbon dioxide laser having a center wavelength of about 9.3 μm to 10.6 μm is a typical example of a laser used for such a process. For example, in such an embodiment of laser processing, a PSA surface protection film as an auxiliary material is bonded to the surface of a workpiece and a laser beam is projected onto the PSA film, so that the workpiece is laser processed together with the PSA film (e.g. , as disclosed in JP2004-235194A). [0003] Due to the growing need for laser beam processing techniques capable of fine cutting, fiber lasers (solid-state The use of lasers) has grown rapidly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02B23K35/36C09J7/29
CPCC08K5/0041C08K2003/2241C09J2423/006B32B2250/24B32B2264/102B32B2264/108B23K26/38C08K3/013C09J7/383C09J7/241C09J7/29B23K2103/172B32B27/08B32B27/32B32B27/18B32B2307/40B32B2307/58B32B2405/00C09J2301/162C09J2301/302C09J2301/312C09J2301/41C09J2301/416C09J2407/00
Inventor B·福瑞尔D·品克斯坦恩花冈稔
Owner NITTO BELGIUM NV
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