TW202003273A - Cold pressure-sensitive transfer sticker and method for using the same including a substrate, a release layer, a pattern printing layer and a pressure-sensitive adhesive layer - Google Patents

Abstract

A cold pressure-sensitive transfer sticker which includes a substrate, a release layer formed on the substrate, a pattern printing layer formed on the release layer, and a pressure-sensitive adhesive layer laminated on the pattern printing layer. The pressure-sensitive adhesive layer is formed from an adhesive composition, and the adhesive composition includes at least one copolyester and a low-temperature closed type bridging agent. This invention further provides a method for using a cold pressure-sensitive transfer sticker, including: (1) attaching a pressure-sensitive adhesive layer of the cold pressure-sensitive transfer sticker to an object; and (2) applying a pressure to the cold pressure-sensitive transfer sticker, so that the pressure-sensitive adhesive layer and a pattern printing layer of the cold pressure-sensitive transfer sticker are transferred to the object, so that a pattern layer is formed on the object. The method for using the cold pressure-sensitive transfer sticker of this invention allows the pattern printing layer to be transferred to the object without applying an adhesive to the object and additionally providing a heat source.

Description

Cold pressure transfer sticker and method of use

The invention relates to a transfer sticker and its use method, in particular to a cold pressure transfer sticker and its use method.

Common transfer technology can be divided into thermal transfer, cold transfer, water transfer, etc. Among them, thermal transfer must be heated to transfer the pattern layer, water transfer needs to be soaked in water before transferring the pattern, therefore, low The cold transfer technology of energy consumption has become a popular research and development direction. No matter it is thermal transfer, water transfer or cold transfer, these transfer technologies must first make a transfer sticker, and the main method of transfer sticker is to print the pattern or text to be transferred on the substrate.

The cold transfer production technology disclosed in TW 20084072A includes: Step 1: Select a plastic film with good softness, and then release the surface to form a release film; Step 2: Print the shape or text image to be set Prepared on the surface of the release film and allowed to stand and dry to obtain a transfer sticker; Step 3: Perform surface cleaning treatment according to the properties of the material to be bonded; Step 4: Spray and coat the surface of the bonded object after cleaning Adhesives with the same or similar properties of the patch and ink. After the surface is dry, apply the transfer sticker to the surface of the patch, supplemented with hand tools to make the sticker and the patch more compliant , And finally tear off the release film and spray with protective topcoat. The above patent publication is to spray the adhesive on the surface of the object to be adhered, but this method must try to control the spray area of the adhesive and the steps are more complicated.

It can be seen from the above description that the cold transfer technology or cold transfer sticker still needs to be further improved and studied.

Therefore, the object of the present invention is to provide a cold pressure transfer sticker.

Therefore, the cold pressure transfer sticker of the present invention includes a base material, a release layer formed on the base material, a pattern printing layer formed on the release layer, and a laminate placed on the pattern printing layer And the pressure-sensitive adhesive layer formed by an adhesive composition. The adhesive composition includes at least one copolyester and a low-temperature closed bridging agent.

Another object of the present invention is to provide a method for using the cold pressure transfer sticker.

The use method of the cold pressure-sensitive transfer sticker of the present invention is suitable for forming a pattern layer on an object. The use method includes the following steps: (1) The pressure-sensitive adhesive layer of the cold pressure-sensitive transfer sticker is applied On the object to be attached; and (2) applying pressure to the cold pressure-sensitive transfer sticker, so that the pressure-sensitive adhesive layer and the pattern printing layer of the cold pressure-sensitive transfer sticker are transferred to the object to be attached The pattern layer is formed on the object.

The effect of the present invention is that the cold pressure-sensitive transfer sticker of the present invention has a special pressure-sensitive adhesive layer, so that when the cold pressure-sensitive transfer sticker is used, there is no need to apply glue to the object to be attached first, and no external heating source is required. That is, the pattern printing of the cold pressure transfer sticker can be transferred to the object. The use method of the cold pressure transfer sticker of the invention has the advantages of low cost and environmental protection.

The present invention will further describe the following embodiments, but it should be understood that this embodiment is for illustrative purposes only, and should not be construed as a limitation of the implementation of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numbers.

Referring to FIG. 1, the cold pressure-sensitive transfer sticker of Embodiment 1 of the present invention includes a base material 1, a release layer 2, a pattern printing layer 3, and a pressure-sensitive adhesive layer 4.

The material of the substrate 1 is not particularly limited, and any known substrate used for transfer stickers can be used, such as but not limited to polyethylene terephthalate (PET), polyester (PE), polypropylene (PP) ) Or polyvinyl chloride (PVC), etc.

The area of the release layer 2 may be the same as the area of the substrate 1 or smaller than the area of the substrate 1.

The pattern printing layer 3 can be formed on the release layer 2 by a known method (such as screen printing).

The pressure-sensitive adhesive layer 4 is formed of an adhesive composition, and the adhesive composition includes at least one copolyester and a low-temperature closed bridging agent.

Preferably, the adhesive composition has a viscosity range of 10,000 to 15,000 cps at 25°C.

Preferably, the pressure-sensitive adhesive layer 4 and the pattern printing layer 3 are aligned up and down, that is, the pressure-sensitive adhesive layer 4 is formed according to the pattern of the pattern printing layer 3, the adhesive composition is coated or printed on On this pattern printed layer 3.

Preferably, the copolyester is a solvent-based copolyester. Commercial products such as, but not limited to, the model VYLON ^® manufactured by Toyobo Corporation of Japan, etc.

The low-temperature closed-type bridging agent can be any bridging agent capable of cross-linking the copolyester, and is preferably a bridging agent capable of reacting at room temperature (15-40°C). The low-temperature closed-type bridging agent is, for example but not limited to, melamine, isocyanate, epoxy resin and the like. Commercial products include, for example and without limitation, blocked isocyanate bridging agent manufactured by LANXESS (Chemtura) of the United States.

Preferably, the pressure-sensitive adhesive layer 4 is viscous in a temperature range above 20°C. More preferably, the pressure-sensitive adhesive layer 4 has viscosity in the temperature range of 20°C to 50°C; and more preferably, the pressure-sensitive adhesive layer 4 has viscosity in the temperature range of 30°C to 40°C .

In the method of using the cold pressure transfer sticker of the present invention, in addition to the optional surface cleaning of the object to be attached in step (1), it is not necessary to spray the adhesive on the object to be attached in advance. The step 1 is to directly paste the cold pressure transfer sticker on the object.

There are no special restrictions on the material of the object, such as metal, fabric, plastic, wood, etc.

Preferably, in the step (2), the cold pressure transfer sticker is applied with a pressure in a temperature range of 20-40°C. The method of applying pressure may be freehand pushing or pushing using a machine (such as a roller or other pressing device).

Preferably, the method for using the cold pressure transfer sticker of the present invention further includes step (3), and the step (3) is to remove the base material of the cold pressure transfer sticker.

In summary, the cold pressure-sensitive transfer sticker of the present invention allows the cold pressure-sensitive transfer sticker to directly transfer the pattern printed layer to the object to be attached at room temperature through the special pressure-sensitive adhesive layer. To achieve the purpose of cost invention.

However, the above are only examples of the present invention, and should not be used to limit the scope of the present invention. Any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still classified as This invention covers the patent.

1‧‧‧Substrate 2‧‧‧Release layer 3‧‧‧Pattern printing layer 4‧‧‧Pressure-sensitive adhesive layer

Other features and functions of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a schematic diagram illustrating the structure of the cold pressure transfer sticker of Example 1 of the present invention.

1‧‧‧ Base material

2‧‧‧ Release layer

3‧‧‧pattern printing layer

4‧‧‧Pressure-sensitive adhesive layer

Claims (7)

A cold pressure-sensitive transfer sticker, comprising: a layer of substrate; a release layer formed on the substrate; a pattern printing layer formed on the release layer; and a pressure-sensitive adhesive layer stacked on the The pattern printing layer is formed by an adhesive composition; wherein the adhesive composition includes at least one copolyester and a low-temperature closed-type bridging agent. The cold pressure-sensitive transfer sticker according to claim 1, wherein the pressure-sensitive adhesive layer and the pattern printing layer are aligned up and down. The cold pressure transfer sticker as described in claim 1, wherein the adhesive composition has a viscosity range of 10,000 to 15,000 cps at 25°C. The cold pressure-sensitive transfer sticker according to claim 1, wherein the pressure-sensitive adhesive layer has tackiness above 20°C. A method for using a cold pressure transfer sticker, which is suitable for forming a pattern layer on an object, the use method includes the following steps: (1) a cold as described in any one of claims 1 to 4 The pressure-sensitive adhesive layer of the pressure-sensitive transfer sticker is attached to the object to be attached; and (2) applying pressure to the cold pressure-sensitive transfer sticker to make the pressure-sensitive adhesive layer and pattern of the cold pressure-sensitive transfer sticker The printed layer is transferred to the object, and the pattern layer is formed on the object. The method for using the cold pressure transfer sticker as described in claim 5, wherein in the step (2), the cold pressure transfer sticker is applied with pressure at 20-40°C. The method for using the cold pressure transfer sticker as described in claim 5 further includes step (3). The step (3) is to remove the base material of the cold pressure transfer sticker.

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