From peeling off the protection pad pasting
Technical field
The utility model relates to a kind of protection pad pasting, relates in particular to a kind of from peeling off the protection pad pasting.
Background technology
In the processing cutting process of the materials such as sheet metal, plastic plate, its surface easily is subject to contact stain(ing) or polishing scratch scratches, and makes it to avoid damage and pollutes so usually adopt protective membrane to cover its surface.After the processing cutting process finished, protective membrane can be removed.Therefore how to peel off easily and efficiently the protection pad pasting, improving production efficiency is to be badly in need of the technical problem of solution in the processing cutting process.
Summary of the invention
The utility model provides that a kind of this has viscosity preferably when peeling off protection pad pasting low temperature from peeling off the protection pad pasting, protecting materials surface effectively, thus adhesiveproperties disappears and can peel off easily during high temperature.
For achieving the above object; the technical solution adopted in the utility model is: a kind of from peeling off the protection pad pasting; comprise polyethylene film and PET film; bonding by PU structural adhesive between described polyethylene film and PET film; the lower surface of described PET film is coated with pressure-sensitive adhesive layer; another surface label of this pressure-sensitive adhesive layer is covered with the separated type material layer; be evenly distributed with several microspheres in described pressure-sensitive adhesive layer; the mean diameter of this microspheres is 10~40 μ m, and the contact surface of described pressure-sensitive adhesive layer and separated type material layer has several salient points.
In technique scheme, further improved technical scheme is as follows:
1, in such scheme, described separated type material layer is off-style paper layer or release film layer.
2, in such scheme, described pressure-sensitive adhesive layer is the esters of acrylic acid adhesive layer.
Because technique scheme is used, the utility model compared with prior art has following advantages:
1, the utility model is from peeling off the protection pad pasting; be evenly distributed with some microspheres in described pressure-sensitive adhesive layer; the mean diameter of this microspheres is 10~40 μ m; make prepared pressure sensitive adhesive lower than 60 ℃ the time; has good viscosity; after temperature was toasted 3 minutes higher than 90 ℃, this pressure sensitive adhesive lost adhesiveproperties.Substrate layer adopts the PE/PET matrix material, and during intensification, PE contraction drive PET is curling, coordinates microballoon to expand, and is therefore rapider from peeling rate.This pressure sensitive adhesive changes the viscosity size of protection pad pasting by temperature variation, possess splendid binding property and from stripping performance.
2, the utility model is from peeling off the protection pad pasting, and the contact surface of pressure-sensitive adhesive layer and separated type material layer has several salient points, the discharge of gas when being conducive to fit, thereby the generation of having avoided bubble and circle to print.
Description of drawings
Accompanying drawing 1 is protected the pad pasting schematic diagram for the utility model from peeling off.
In above accompanying drawing: 1, polyethylene film; 2, contact surface; 3, PET film; 4, PU structural adhesive; 5, pressure-sensitive adhesive layer; 6, separated type material layer; 7, microspheres.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment 1: a kind of from peeling off the protection pad pasting; comprise polyethylene film 1 and PET film 3; bonding by PU structural adhesive 4 between described polyethylene film 1 and PET film 3; the lower surface of described PET film 3 is coated with pressure-sensitive adhesive layer 5; these pressure-sensitive adhesive layer 5 another surface labels are covered with separated type material layer 6; be evenly distributed with several microspheres 7 in described pressure-sensitive adhesive layer 5; the mean diameter of this microspheres 7 is 10 ~ 30 μ m, and described pressure-sensitive adhesive layer 5 has several salient points with the contact surface 2 of separated type material layer 6.
Above-mentioned separated type material layer 6 is off-style paper layer, and pressure-sensitive adhesive layer 5 is the esters of acrylic acid adhesive layer.
Above-mentioned microspheres can be the microspheres of loose our company, and it has elastic shell and contains the lower boiling alkane such as Trimethylmethane, propane, pentane.
Embodiment 2: a kind of from peeling off the protection pad pasting; comprise polyethylene film 1 and PET film 3; bonding by PU structural adhesive 4 between described polyethylene film 1 and PET film 3; the lower surface of described PET film 3 is coated with pressure-sensitive adhesive layer 5; these pressure-sensitive adhesive layer 5 another surface labels are covered with separated type material layer 6; be evenly distributed with several microspheres 7 in described pressure-sensitive adhesive layer 5; the mean diameter of this microspheres 7 is 20 ~ 40 μ m, and described pressure-sensitive adhesive layer 5 has several salient points with the contact surface 2 of separated type material layer 6.
Above-mentioned separated type material layer 6 is release film layer, and pressure-sensitive adhesive layer 5 is the esters of acrylic acid adhesive layer.
Above-mentioned microspheres can be the microspheres of loose our company, and it has elastic shell and contains the lower boiling alkane such as Trimethylmethane, propane, pentane.
Adopt above-mentioned from peeling off the protection pad pasting, be evenly distributed with some microspheres in described pressure-sensitive adhesive layer, the mean diameter of this microspheres is 10~40 μ m, make prepared pressure sensitive adhesive lower than 60 ℃ the time, has good viscosity, after temperature was toasted 3 minutes higher than 90 ℃, this pressure sensitive adhesive lost adhesiveproperties; Substrate layer adopts the PE/PET matrix material, and during intensification, PE contraction drive PET is curling, coordinates microballoon to expand, and is therefore rapider from peeling rate.This pressure sensitive adhesive changes the viscosity size of protection pad pasting by temperature variation, possess splendid binding property and from stripping performance.Secondly, the contact surface of pressure-sensitive adhesive layer and separated type material layer has several salient points, the discharge of gas when being conducive to fit, thereby the generation of having avoided bubble and circle to print.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow person skilled in the art scholar can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model spirit change or modify, within all should being encompassed in protection domain of the present utility model.